Assessment of Particle Size Analysis in the
Lake Tahoe Basin
Alan C. Heyvaert1
Daniel M. Nover2
Todd G. Caldwell1
Wendy B. Trowbridge1
S. Geoffrey Schladow2
John E. Reuter2
February 2011
Prepared by
1
Desert Research Institute, Division of Hydrologic Sciences and
2
University of California, Davis, Tahoe Environmental Research
Center
Prepared for
USDA Forest Service, Pacific Southwest Research Station
This research was supported through a grant from the USDA Forest Service Pacific
Southwest Research Station and using funds provided by the Bureau of Land Management
through the sale of public lands as authorized by the Southern Nevada Public Land
Management Act.
http://www.fs.fed.us/psw/partnerships/tahoescience/
The views in this report are those of the authors and do not necessary reflect those of the
USDA Forest Service Pacific Southwest Research Station or the USDI Bureau of Land
Management.
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
EXECUTIVE SUMMARY
Water clarity in Lake Tahoe has been declining for several decades. Much of this
clarity loss has been caused by increased input and accumulation of fine particulates (<16 µm
in diameter) in the lake. Therefore, accurate methods for analysis of fine particle
concentrations and particle size distributions in water samples from the lake, from streams,
and from urban runoff are of major importance. A variety of methods are currently in use at
Tahoe for conducting laboratory analyses of suspended fine sediment particles (FSP), but
there is not an existing set of protocols to assure consistency of results and data reporting.
Equally important, the particle size distribution (PSD) data that have been collected are not
assembled into a comprehensive data set. Furthermore, the data from various methods are not
necessarily equivalent, and usually derive from a different set of assumptions on
composition, density, shape, aggregation, size range, etc. As a result, there is a critical need
for comparative analyses and for recommendations on methods and data reporting formats.
The main goal of this project was to assemble and analyze available data on particle
size characterization reported for samples taken from Lake Tahoe, from Tahoe Basin
streams, and from Tahoe area urban runoff. Additional objectives included 1) conducting a
set of comparative tests on the methods currently in use for PSD analysis; 2) preliminary
investigation on the use of surrogate measurements to complement or replace the explicit
measurement of PSD; and 3) developing guidance for standardized analysis and reporting of
new data by various groups.
Available particle size data from lake, stream, and urban runoff samples that had been
collected from 1999 to 2010 were assembled and analyzed. Both temporal and spatial
patterns in lake sample FSP concentrations were presented and discussed, including evidence
for a strong correlation between annual precipitation and lake particle concentrations. Lake
concentrations tended to be highest in the upper water column above the Secchi depth and
declined below the deep chlorophyll maximum. Spring and early summer particle
concentrations increased, coinciding with snowmelt, and then decreased in late autumn and
early winter, especially during periods of lake turnover. Annual average stream
concentrations showed variable relative differences between sites and years, although relative
ranks based on annual average flux were more consistent. Both concentrations and flux were
lowest during dry years and highest during peak wet years.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
FSP concentrations in stormwater samples were generally several orders of
magnitude greater than the fine particle concentrations in lake and steam samples. An urban
stormwater characteristic PSD profile was developed, based on over seven hundred samples
collected at fifteen sites during seven years of monitoring in the Tahoe Basin. It shows a
unimodal peak for percent particle volume centered at about 20 µm. A strong relationship
was observed between stormwater sample turbidity and FSP concentration (total 0.5-16 µm
particles/mL), and an equation was developed for estimating FSP concentrations from sample
turbidity measurements. The difference between FSP number concentration and FSP mass
concentration was discussed, and recommendations were provided for developing a program
to implement turbidity as a proxy or surrogate metric to represent corresponding FSP number
concentrations in the Tahoe Basin.
Changes in PSD associated with holding times for stormwater samples were evident
within a single day, tending toward increasing particle size, a process that continued with
increased holding times. Treatment with sonication and dispersant additions were tested as a
technique to restore original PSD profiles. Dispersants showed no effect, but sonication was
generally effective at restoring characteristics of the PSD.
FSP results produced by three different laser particle size analysis instruments were
compared by analysis of split stormwater samples. Each instrument is currently used in the
Tahoe Basin and all were shown to produce different results, although there was a strong
correlation between output from the Micromeritics Saturn DigiSizer and the Beckman
Coulter LS-13320 (R2 = 0.98). Data from the Particle Measuring Systems LiQuilaz
instrument did not correspond as closely to the DigiSizer or the LS-13320 (≤R2 = 0.78). This
was likely due to extreme sensitivity of the LiQuilaz, which is optimized for analysis of
samples at very low particle concentrations typical of clean rooms and Lake Tahoe water
(<104 particles per milliliter), with additional error likely introduced by the excessive
dilutions necessary for most stormwater samples (>107 particles / mL).
A standard operating procedure for laser particle size analysis of Tahoe stormwater
samples was developed, as well as specific operating parameters for both the LS-13320 and
the DigiSizer instruments, and recommended reporting criteria.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
CONTENTS
EXECUTIVE SUMMARY ...................................................................................................... iii
LIST OF FIGURES ...................................................................................................................vi
LIST OF TABLES .................................................................................................................. viii
1.
INTRODUCTION .......................................................................................................... 1
1.1 Background .................................................................................................................. 1
1.2 Objectives of the Study ................................................................................................ 2
2.
METHODOLOGY ......................................................................................................... 2
2.1 Particle Size Measurements at Tahoe........................................................................... 2
2.1.1 Particle Count Size Distributions ..................................................................... 3
2.1.2 Volumetric Particle Size Distributions ............................................................. 5
2.1.3 Particle Size Distributions by Sieving and Filtration ....................................... 7
2.2 Sample Collection and Sample Preparation ................................................................. 8
2.2.1 Sample Collection Procedures .......................................................................... 8
2.2.2 Sample Processing .......................................................................................... 12
2.3 Holding Time and Sonication Experiments ............................................................... 12
2.3.1 Experiment 1 .................................................................................................. 13
2.3.2 Experiment 2 .................................................................................................. 14
2.3.3 Experiment 3 .................................................................................................. 15
2.3.4 Data Analysis.................................................................................................. 15
2.4 Comparative Analysis Experiments ........................................................................... 16
3.
RESULTS AND DISCUSSION ................................................................................... 16
3.1 Lake Sample Analysis ................................................................................................ 16
3.1.2 LTP Samples .................................................................................................. 16
3.1.3 MLTP ............................................................................................................. 26
3.2 Stream Sample Analysis............................................................................................. 33
3.3 Stormwater Runoff Sample Analysis ......................................................................... 40
3.4 Results from Holding Time and Sonication Experiments .......................................... 46
3.5 Comparative Results from Particle Size Analysis Instruments .................................. 57
3.6 Recommendations for Tahoe Particle Size Analysis ................................................. 67
3.6.1 Lake Tahoe Samples and Stream Samples ..................................................... 67
3.6.2 Tahoe Stormwater Runoff Samples................................................................ 68
3.6.3 Analysis of Tahoe Soil Samples for Water Quality Projects ......................... 73
3.6.4 Internal Standards for Laboratory Quality Control ........................................ 74
4.
ACKNOWLEDGEMENTS .......................................................................................... 76
5.
LITERATURE CITED ................................................................................................. 77
APPENDIX A. Particle Size Classification System for Sedimentology, expressed in
phi units (Krumbein, 1936) as recommended by the American Geophysical
Union (Lane 1947). ....................................................................................................... 80
APPENDIX B. Laser Particle Size Analysis for Determining Particle Size
Distribution and Fine Particle Concentrations in Tahoe Stormwater Samples............. 81
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe
Basin stream samples (LTIMP). ................................................................................. 101
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake
Tahoe midlake water samples (MLTP site). ............................................................... 123
Appendix E. Tahoe stormwater particle size distribution data. .............................................. 131
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
LIST OF FIGURES
2.1.
2.2.
2.3.
3.1.
3.2.
3.3.
3.4.
3.5.
3.6.
3.7.
3.8.
3.9.
3.10.
3.11.
3.12.
3.13.
3.14.
3.15.
3.16.
3.17.
3.18.
3.19.
3.20.
3.21.
3.22.
3.23.
3.24.
3.25.
3.26.
Particle size distribution of typical Lake Tahoe water sample and relationship
to equivalent suspended sediment (SS) calculated for that size fraction. ....................... 4
Location of Lake Tahoe in California-Nevada with identification of the LTP
(index) and MLTP (mid-lake) stations, and the location of LTIMP streams. ................ 9
Distribution of selected stormwater monitoring (SWM) sites around the Lake
Tahoe Basin. ................................................................................................................. 11
Particle concentration contours in Lake Tahoe from sample collection
beginning in March of 1999 at the LTP site. ................................................................ 17
Particle concentrations at LTP site for Water Year 2000. ............................................ 18
Particle concentrations at LTP site during Water Year 2001. ...................................... 18
Particle concentrations at LTP site during Water Year 2002. ...................................... 19
Particle concentrations at LTP site during Water Year 2003. ...................................... 19
Particle concentrations at LTP site during Water Year 2006. ...................................... 20
Particle concentrations at LTP site during Water Year 2007. ...................................... 20
Particle concentrations at LTP site during Water Year 2008. ...................................... 21
Particle concentrations at LTP site during Water Year 2009. ...................................... 21
Ten year average profile of fine particle concentrations plotted against depth
at the LTP site. .............................................................................................................. 23
Annual average profiles of fine particle concentrations plotted against depth
at the LTP site. .............................................................................................................. 24
Regression chart of annual average lake particle concentration (<20 µm) in
the LTP water column and cumulative annual precipitation. ....................................... 24
Seasonally averaged particle concentration profiles from the LTP site
(WY1999–2010). .......................................................................................................... 25
Particle concentrations depth averaged from the surface to the Secchi depth
from 1999 to 2009. ........................................................................................................ 26
Particle concentration contours in Lake Tahoe from sample collection
beginning in January of 1999 at MLTP site.................................................................. 27
Particle concentrations at MLTP site for Water Year 2000. ......................................... 27
Particle concentrations at MLTP site for Water Year 2001. ......................................... 28
Particle concentrations at MLTP site for Water Year 2002. ......................................... 28
Particle concentrations at MLTP site for Water Year 2003. ......................................... 29
Particle concentrations at MLTP site during Water Year 2006. Samples were
not collected during WY2004, WY2005, and early WY2006. ..................................... 29
Particle concentrations at MLTP site during Water Year 2007. Data not
available from late WY2007 due to instrument malfunction........................................ 30
Particle concentrations at MLTP site during Water Year 2008. ................................... 30
Particle concentrations at MLTP site during Water Year 2009. ................................... 31
Ten year average profile of fine particle concentrations plotted against depth
at the MLTP site............................................................................................................ 31
Annual average profiles of fine particle concentrations plotted against depth
at the MLTP site............................................................................................................ 32
Seasonally averaged particle concentration profiles from the LTP site
(WY1999–2010). .......................................................................................................... 33
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
3.27.
3.28.
3.29.
3.30.
3.31.
3.32.
3.33.
3.34.
3.35.
3.36.
3.37.
3.38.
3.39.
3.40.
3.41.
3.42.
3.43.
3.44
3.45
3.46
3.47.
3.48.
3.49.
Annual average fine particle concentrations in LTIMP streams for all years of
record. ......................................................................................................................... 34
Annual average fine particle concentration (#/mL) for LTIMP streams by
site.
......................................................................................................................... 35
Annual average fine particle concentration (#/mL) for LTIMP streams by
year.
......................................................................................................................... 36
Annual average fine particle (<20 µm) flux (#/second) for each LTIMP
stream by site.. .............................................................................................................. 38
Annual average fine particle (<20 µm) flux (#/second) for each LTIMP
stream by year. .............................................................................................................. 39
Particle size distributions of individual urban stormwater samples collected at
Osgood Avenue site from March 2003 through March 2004. ...................................... 40
Median particle size profiles for individual stormwater monitoring sites. ................... 41
Median PSD profiles for selected urban stormwater monitoring sites
compared to Mountain Drive. ....................................................................................... 42
Median PSD profiles for Round Hill sites and Mountain Drive. .................................. 43
Median PSD profiles for two intensively monitored, long-term sites at
opposite ends of the Tahoe Basin. ................................................................................ 44
Similarity of median PSD profiles at two nearby stormwater monitoring sites
in South Lake Tahoe. .................................................................................................... 45
Total particles between 0.5 to 16 µm in Tahoe stormwater samples versus
turbidity (n=773). .......................................................................................................... 46
Comparison of control (no treatment) samples to their lognormal distributions
(average of replicates). .................................................................................................. 48
Plot of G-test results from Table 3.2. ............................................................................ 50
Holding time effects on particle size distribution. ........................................................ 52
Effect of sonication and dispersant on particle size distribution parameters in
three experiments (with three different stormwater samples)....................................... 55
Volume frequency distribution with and without 90 seconds of sonication for
three varying levels of dispersant addition (0%, 0.01%, 1.0% w/v). ............................ 56
Examples of comparative LS-13320 and DigiSizer analyses on split
stormwater samples.. ..................................................................................................... 58
Examples of particle concentrations in size bins from 0.5–16 µm derived
from LS-13320, DigiSizer, and LiQuilaz analysis on split samples. ............................ 59
Examples of comparative fine sediment particle concentrations (0.5–16 µm)
derived from LS-13320, DigiSizer, and LiQuilaz analyses on split samples. .............. 61
Histograms of percentage differences among split sample FSP concentrations
from the (A) DigiSizer versus LS-13320, and from the (B) LiQuilaz versus
LS-13320....................................................................................................................... 62
Scatterplots of (A) LS-13320 results versus DigiSizer and (B) LS-13320
versus LiQuilaz for total fine particle concentrations (0.5–16 µm) in sample
splits, with fitted linear regression lines. ...................................................................... 63
Scatterplots of fractional turbidity (<20 µm) versus (A) LS-13320 analysis
and (B) LiQuilaz analysis for total fine particle concentrations (0.5–16 µm) in
sample splits, showing fitted linear regression lines (n=36). ........................................ 64
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
3.50.
Scatterplot of fractional TSS (<20 µm) versus LiQuilaz analysis for total fine
particle concentrations (0.5–16 µm) in sample splits, showing fitted linear
regression line (n=36). .................................................................................................. 65
3.51. Scatterplot of fractional TSS (<20 µm) versus fractional turbidity (<20 µm)
in stormwater sample splits, with fitted linear regression lines (n=36). ....................... 66
3.52. The 95% prediction interval for FSP concentration based on sample turbidity. .......... 69
3.53 Median PSD profile and interquartile range for the long-term set of Tahoe
stormwater samples from multiple sites shown in Appendix E (n=773). ..................... 71
3.54. Mean cumulative distributions of the Yolo IRS from DRI (DigiSizer) and UC
Davis (LS-13320) analyses. .......................................................................................... 76
LIST OF TABLES
2.1.
3.1.
3.2.
3.3.
3.4.
Experimental design for sonication and dispersant tests on stormwater PSD. ............. 13
Land use and landscape characteristics of urban stormwater monitoring sites. ........... 43
G test results for all treatments and times. .................................................................... 49
ANOVA results for experimental treatments of holding time and dispersant
on PSD. ......................................................................................................................... 54
PSD results and 95% confidence interval (CI) tolerances for the Yolo Silt
loam on the Saturn DigiSizer. ....................................................................................... 75
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
1.
INTRODUCTION
Water clarity in Lake Tahoe has been decreasing at the rate of about 1 foot per year
for several decades. The annual average lake transparency is now nearly one third less than
when Secchi disk measurements were started in the late 1960s (Jassby et al. 1999). Initially,
most of the clarity loss was thought to have been caused by increased loading of nutrients
fueling algal growth in the water column. More recently, however, it has been recognized
that a larger fraction of clarity loss was due to the accumulation of very small particulates
(<16 µm in diameter) in the lake (Jassby et al. 1999; Swift et al. 2006). Model simulations
for the Lake Tahoe Total Maximum Daily Load (TMDL) suggest that a 65% reduction in
fine particle inputs will be required to reach the TMDL target for average annual Secchi
depth of 30 m, whereas only 35% and 10% reductions will be required for phosphorus and
nitrogen loadings, respectively (Lahontan and NDEP 2010; Sahoo et al. 2010).
Clearly, the measurement of particle size distribution (PSD) and particle counts are
exceptionally important in the evaluation of water quality samples collected from the lake,
from stream discharge and urban runoff. These data are also important for making decisions
about designs for best management practices (BMPs) and for treatment efficiency
evaluations. Although a variety of methods exist for conducting these laboratory analyses,
and several are currently in use at Lake Tahoe, there is not an existing set of protocols that
assure consistency of data and cost-effective analyses. Equally important, the PSD data that
have been collected are not assembled into a comprehensive data set. This project was
developed to address these critical needs.
1.1
Background
Traditional particle size analysis methods include many techniques used in soil
science, such as sieving, the pipette method, the hydrometer method, and laser light
scattering measurements. Although suitable for soils, these do not adapt well for water
quality samples typical of Tahoe, where particle concentrations can be very low and their
composition heterogeneous, with a combination of mineral and organic material.
Furthermore, the data may be presented in different formats, such as particle counts,
distribution of particle volumes, or as percentage mass distributions. Conventional
methodologies for quantifying suspended sediment (SSC, TSS and turbidity) are also
available, and they may be important linkages to particle counts and size distribution.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
It is recognized that no single method will answer all questions relevant to particle
size analysis and water quality conditions of source water and receiving waters in the Lake
Tahoe Basin. Rather, it is a combination of approaches that is likely to provide the most costeffective assessment for different types of samples. However, the data from these methods
are not necessarily equivalent, and usually derive from a different set of assumptions on
composition, density, shape, aggregation, size range, etc. Thus, there has been a critical need
for comparative analyses and for recommendations on appropriate methods and data
reporting formats.
1.2
Objectives of the Study
The main goal of this project was to assemble and analyze available data on particle
size characterization reported for samples taken from Lake Tahoe, from Tahoe Basin
streams, and from Tahoe area urban runoff. Additional objectives included 1) conducting a
set of comparative tests on the methods currently in use for PSD analysis; 2) preliminary
investigation on the use of surrogate measurements to complement or replace the explicit
measurement of PSD; and 3) developing guidance for standardized analysis and reporting of
new data by various groups.
2.
METHODOLOGY
The methods and data presented below are based on the use of instrumentation
currently available at Tahoe and applied in development of the TMDL. These include the
Particle Measuring Systems LiQuilaz optical particle counter, the Beckman Coulter LS13320 laser diffraction particle size analyzer, and the Micromeritics Saturn DigiSizer laser
diffraction particle size analyzer. Each instrument has characteristics that make it suitable for
the analysis of specific sample types, which are discussed below. Although many other types
of instrumentation currently exist for particle size analysis, they were not available during the
development of this project and have not been widely applied to date in sample analysis at
the Tahoe Basin. Alternative options will continue to be evaluated as the opportunities
develop in future studies related to this project.
2.1
Particle Size Measurements at Tahoe
The analytic results for particle size distribution of environmental samples can be
reported as particle counts for each size fraction, or in terms of the volume of particles per
size fraction, or by mass within a specified size range. Of these options, the absolute size
2
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
distribution derived from particle counts is the preferred result, as used in developing the
Lake Tahoe Clarity Model, since it is the number and composition of fine particles in
suspension that determine clarity conditions in Lake Tahoe (Swift et. al. 2006). However,
this may not always be practical or necessary. The Pollutant Load Reduction Model (PLRM),
for example, applies the mass of particles <16 µm to estimate fine sediment particle (FSP)
loading and load reductions associated with stormwater runoff and management practices in
urban project areas (nhc et al., 2009). Although particle size results can be converted from
one form to another, there are important assumptions and limitations in this conversion that
affect the results and interpretation (see Section 3.5).
2.1.1
Particle Count Size Distributions
Laser optical particle counters have been used for decades to monitor clean room air,
ultrapure water and manufacturing processes, but their application to the analysis of
environmental water quality samples is more recent. As such, the extension of this equipment
and associated techniques to the analysis of natural waters remains in development, and the
results from laser particle counters of different designs can be quite different, although
internally consistent for each instrument when properly calibrated and maintained.
The first use of this technology at Lake Tahoe was for analysis of lake and stream
samples using a liquid sampler (LS-200) and a particle counting spectrometer (LiQuilaz-S05HF) manufactured by Particle Measuring Systems, Inc. (Boulder, Colorado). This instrument
determines the size of a particle based on the magnitude and duration of light scattering (over
120° in the forward direction) as the particle passes through the measurement chamber at a
known flow rate, and it provides a measure of absolute particle concentration (particles/mL)
in fifteen size classes ranging from 0.5 to 20 μm in spherical-equivalent diameter. Boundaries
between size classes are adjustable by the user, but since May 2002 the bin size range
delineations used to count particles for Tahoe samples have been set at 0.5, 0.63, 0.794, 1.0,
1.414, 2.0, 2.828, 4.0, 4.757, 5.657, 6.727, 8.0, 11.314, 16.0 and 20.0 μm.
Three assumptions are applied when analyzing Tahoe samples with the LiQuilaz
system: (i) the particles are spherical, (ii) they have a refractive index of 1.59 (approximately
that of latex polystyrene beads used for calibration), and (iii) the medium has an index of
refraction of water (typically 1.33). These necessary assumptions are believed to generate
3
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
reasonably accurate estimates of particle concentrations and size distributions for Tahoe
water samples (Coker, 2001).
The output of the LiQuilaz analysis generally follows a Junge or power law
distribution, which is thought to reasonably represent the distribution of particles in natural
waters (Jonasz and Fournier, 2007). Typical output from a sample of Lake Tahoe water run
through the LiQuilaz is shown in Figure 2.1. The particle size distribution (in blue) is plotted
next to the estimated concentration of suspended sediment (in red) calculated from measured
number of particles in each size class (assuming spherical shape and an average particle
density similar to quartz, 2.65 g/cm3). This chart illustrates both a characteristic particle size
distribution for a lake water sample and the importance of these measurements. Although
very fine particles account for a miniscule fraction of the suspended sediments by weight,
they dominate the particle size distribution.
Figure 2.1.
Particle size distribution of typical Lake Tahoe water sample and relationship to
equivalent suspended sediment (SS) calculated for that size fraction.
Fine sediment particles (FSP) are extremely important in terms of their impact on
lake water clarity (Swift et. al. 2006), and accurate particle counts become increasingly
important with smaller size fractions to a lower limit of about 0.5 µm. It is evident from
Figure 2.1 that slight differences in the mass of sediment particles between 16–20 µm would
4
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
have minimal effect on the total particle concentration, whereas slight differences in the mass
of sediment particles between 1-5 µm would have a large effect on total particle
concentration.
Data from LiQuilaz particle counting were used for calibrating the lake clarity model
in its response to FSP concentrations. This method of analysis was appropriate for the
extremely clean water of mid-Lake Tahoe, similar to clean water used in high-tech
manufacturing facilities, for which the instrument was designed. However, the extreme
sensitivity of the LiQuilaz to low particle numbers also limits its upper concentration range to
less than 10,000 particles/mL.
2.1.2
Volumetric Particle Size Distributions
While LiQuilaz particle counting was appropriate for the low concentrations typical
in lake and stream samples, it was not directly applicable to analysis of typical urban
stormwater runoff samples with suspended sediment concentrations in excess of 20,000,000
particles/mL (2E7 particles/mL). Therefore, alternative instrumentation was used for analysis
of Tahoe urban runoff samples, building on recent advances in methods developed for soils
analysis.
In soil science there has been increasing use of laser diffraction instruments for
describing the particle size distribution of soil samples, in place of more traditional
sedimentation methods based on Stokes law. The laser method for soils analysis has several
advantages over mechanical sieving and hydrometer or pipette methods. It is fast (Arriaga et
al., 2006; Zobeck, 2004), produces a continuous PSD (Sperazza et al., 2004), is highly
reproducible (Beuselinck et al., 1998; Goossens, 2008), and requires minimal material for
analysis. These same advantages are relevant to PSD analysis of stormwater samples, where
sample volumes are limited and more detail is required in describing the distribution of
particle size fractions less than 16 µm, as well as the distribution of particle size fractions in
both silt and sand classes. Disadvantages include the initial equipment costs, and assumptions
required for conversion from particle volume to mass and particle counts (Clifton et al.,
1999).
Laser diffraction analysis of Tahoe urban runoff samples was first implemented
during the technical TMDL stormwater monitoring study (Heyvaert et al. 2007) using a
LS-13320 multiwavelength particle size analyzer from Beckman Coulter, Inc. (Brea, CA).
5
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
This instrument determines particle size based on low-angle, forward light scattering by
particles passing through the measurement chamber in a recirculating sample stream. The
angle of diffraction is inversely proportional to particle size, and intensity of the diffracted
beam is a measure of the number of particles with specific cross-sectional area in the beam
path. A user selected optical model calculates the PSD as percentage of total particle volume
represented in user defined size bins ranging from 0.04 to 2000 µm. The phi series of size
classes was selected as appropriate for reporting purposes, as it is based on a logarithmic
scale that provides increasingly smaller size bins with decreasing particle size (Appendix A).
Output signals from a charge-coupled device (CCD) in the laser diffraction
instrument are interpreted by one of two optical models, either the Fraunhofer model or the
Mie theory model. The Fraunhofer approximation is the easiest model to set up because it
does not require the user to provide any additional information about optical properties of the
solution or particles. In contrast, the Mie theory model results from an analytical solution to
Maxwell’s equations for the scattering of electromagnetic radiation (light waves) by
spherical particles and provides an exact solution to the scattering of light by homogenous
spheres, but it requires the specification of an unknown refractive index (RI) with both real
(nr) and imaginary (ni) components representing the refractive and absorption characteristics
of the particle suspension. While the Fraunhofer model provides a reasonable approximation
without additional assumptions about optical properties of the solution and suspended
particles, it can become increasingly inaccurate as particle sizes decrease below about 10 µm.
Therefore, the Mie theory optical model is generally preferred for samples with a relevant
portion of their PSD below 10 µm, as is the case with Tahoe samples. While Tahoe TMDL
data were initially reported from a Fraunhofer deconvolution, these data have been
recalculated using the Mie theory model and a set of consistent sediment particle optical
parameters (nr = 1.550 and ni = 0.100), with the resulting data presented in Appendix E.
Beyond the parameters defined above for the refractive indices, it is assumed when
sizing particle distribution with laser diffraction analysis that (i) particles are isotropic
spheres, and (ii) they are homogenously dispersed in solution. One additional assumption of
homogenous particle density across the distribution is applied when the results are converted
from percent particle volumes to number of particles per unit of suspension volume.
Another laser diffraction instrument that has been used for analysis of Tahoe samples
is the Micromeritics Saturn DigiSizer at DRI. This is similar to the Beckman Coulter LS6
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
13320 instrument used at UCD-TERC, and it provides analogous sample analysis and
reporting features. The relative correspondence of results from these two instruments was
evaluated by comparative analysis of split samples, as discussed in Section 3.5. In the past,
Tahoe data from the DigiSizer were reported in size categories typical of textural analysis for
soils classification (0.5, 2, 15, 62.5, 120, 250, 500, 1000 µm), but the data developed from
analysis of split stormwater samples for this study were analyzed in the phi series size classes
shown in Appendix A.
2.1.3 Particle Size Distributions by Sieving and Filtration
The most widely used and traditional methods for describing particle size
distributions involve sieving and sedimentation. Wet sieving of particle suspensions is a
standard technique in soil science and geomorphology to describe the mass distribution of
sand size classes and coarse silts, while water filtration is standard practice for a variety of
manufacturing processes, water quality treatment, and analytic procedures. Filters are
commonly available across a wide range of nominal or absolute pore sizes in different types
of materials.
Total suspended solids (TSS) are measured by a filtration method in water quality
analysis to describe the mass concentration of suspended material in a water sample,
including particulate solids in stormwater runoff. Methods for TSS analysis are described by
both USEPA (160.2) and Standard Methods for the Examination of Water and Wastewater
(SM 2540-D). It is one of the easier analyses to perform for water quality assessment,
although filter specification and any pre-screening procedures should always be described
when presenting the data. All TSS results reported in this document were measured after
prescreening at 1000 µm and employed ProWeigh® glass-fiber filters with a nominal pore
size of 1.5 µm. In some cases, the residual particulates (0.45–1.5 µm) were measured by
passing this filtrate through tared 0.45µm Magna® nylon membrane filters, but this generally
amounted to less than one percent of the TSS.
In some cases, especially when the concentrations of coarse particulates are high, a
measurement of suspended sediment concentration (SSC) can provide a more consistent and
reliable estimate of particulate concentrations than TSS. This is because slight differences in
subsampling and TSS techniques (aliquot bias) create errors in TSS compared to the whole
sample analysis approach required for SSC (Gray et al. 2000). In these cases the TSS
7
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
analytical method may produce data that are negatively biased by 25 to 34 percent when
compared to SSC analysis on samples collected at the same time. A technical memorandum
issued by the Federal Interagency Sedimentation Project recommends the ASTM Standard
D-3977 method for SSC analysis (FISP, 2006). It is worth noting, however, that this
negative bias decreases rapidly as the concentration of larger particles decreases (Gray et al.
2000), primarily because the bias is an artifact of subsampling (aliquot) techniques that do
not representatively capture the coarser grain (>125 µm) particulates for analysis. By
definition the SSC analysis is conducted on an entire (non-split) sample. For stormwater
analysis this is not practical, since sample splits are generally needed to conduct several
different analyses or when creating event composites for analytic efficiency. In any case, the
pollutant of concern at Tahoe is fine sediment particles less than 16 µm, so this issue of
aliquot bias is not relevant unless the PSD range of interest for a particular sample extends
into the medium or coarse sand size classes.
Sieving and screening separates particles into various size fractions based on their
ability to pass through a series of mesh sieves with square apertures of various standard sizes
(ASTM Method D-1498). This method also assumes particle sphericity, so a slight bias may
occur when screening particles of heterogeneous shape that can assume long axis orientation
to pass the sieve aperture. The finest mesh sieve readily available is U.S. Standard #635, with
an aperture size of 20 µm. Both the 63 µm (#230) and 20 µm (#635) sieves were used in this
study to prescreen samples for subsequent laser particle size analysis, turbidity
measurements, and gravimetric mass determinations (fractional TSS).
2.2
Sample Collection and Sample Preparation
The interpretations of particle size analytic results are entirely dependent and
constrained by the sample collection procedures and subsequent processing methods. For
example, lake samples can be taken at different locations and depths, stream samples can be
collected by different methods, and multiple stormwater samples are typically composited to
create event mean composites prior to analysis. All of these factors affect which
characteristics of the system are ultimately reflected in the sample.
2.2.1
Sample Collection Procedures
Sampling for particle concentrations in Lake Tahoe and in selected Tahoe Basin
streams has been conducted at the same sites for the past ~10 years (see Figure 2.2 for
8
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
sampling locations). The two major lake sampling locations are called the Lake Tahoe Index
Station (LTP) and the Mid-Lake Tahoe Profile Station (MLTP). The LTP site is located
midway along the west shore of Lake Tahoe on a shelf; approximately 105 m deep (see
Figure 2.2). This site was chosen to represent processes in the lake including near-shore
effects. In particular, the site is located near the outflow of Ward Creek and should therefore
reflect the seasonal impacts of streamflow, spring snowmelt, etc. The MLTP site is located in
the middle of the lake above the lake’s deepest point (~504 m) and was chosen to reflect
in-lake processes (Figure 2.2).
Figure 2.2.
Location of Lake Tahoe in California-Nevada with identification of the LTP (index)
and MLTP (mid-lake) stations, and the location of LTIMP streams.
9
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Prior to June 1999, approximately monthly sampling was performed at the LTP site
for particle size analysis. Starting in June 1999, samples from the Index Station were
collected every 10 to 12 days, at depths of 0 m, 2 m, 5 m, 10 m, 15 m, 20 m, 30 m, 40 m,
50 m, 60 m, 75 m, 90 m and 105 m, respectively. Between 3/2/2000 and 5/1/2002 samples
were collected at monthly intervals. After 5/1/2002 samples from the Index Station were
collected every 10 to 12 days again. Starting in January 1999, samples from the MLTP site
were collected at monthly intervals at depths of 0 m, 10 m, 50 m, 100 m, 150 m, 200 m,
250 m, 300 m, 350 m, 400 m and 450 m, respectively. Starting in June 2002, additional
samples were collected at 20 m, 30 m and 40 m to increase spatial resolution.
Stream-water was collected at the ten streams identified by the Lake Tahoe
Interagency Monitoring Program (LTIMP) to be the most important in terms volume of
streamflow and particle flux (Figure 2.2). These streams, in alphabetical order, are
Blackwood, Edgewood, General, Glenbrook, Incline, Logan House, Third, Trout, and Ward
Creeks, and the Upper Truckee River. Eagle Rock Creek, not shown on the map, is a small
tributary to Edgewood Creek. While the remaining 52 Tahoe streams and creeks that
discharge into Lake Tahoe are no doubt important for particle flows into the lake, their
combined hydraulic discharge contribution is estimated to be less than that from the LTIMP
streams. Stream water sample collection consisted of periodic monthly sampling and storm
event sampling. The frequency of samples ranged from once a month during low flow
conditions to several times a week during the spring snowmelt events.
Lake water samples were collected at discrete depths using a Van Dorn bottle. Stream
samples were collected as grab samples from six inches below the water surface. Water
samples were then transferred to wide-mouth translucent Nalgene bottles. All sample bottles
were previously washed with Alconox solution and rinsed five times with the facility purified
water, and then three times with Nanopure water. Prior to the transfer from the Van Dorn
bottle to the Nalgene sample bottles, each bottle was rinsed three times with sample water.
Sample bottles were immediately placed in ice chests and transferred to the Department of Civil
and Environmental Engineering at UC Davis. Samples were stored in a dark, cold storage room
at 4°C before analysis. Analyses were performed typically within 10 days after sample collection
(Sunman 2004; Rabidoux 2005).
All TMDL stormwater samples were collected from mixed-use urban stormwater
runoff sites (Figure 2.3) as discrete samples using Sigma and Isco autosamplers that
10
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
sequentially dispensed each individual aliquot into a one-liter polyethylene bottle within a
base of twenty-four bottles. Samples were stored at 4°C in the dark until processing and
analysis. Intake strainers were placed near the center and slightly elevated above the bottom
of flow channels, usually within a flume or culvert pipe. Event flow measurements were
collected with stage or area-velocity flow sensors and recorded by data loggers at 5–15
minute intervals. Large volume storm runoff samples for sample splitting and comparative
analysis experiments were collected at culvert discharge sites directly into clean HDPE 5gallon buckets.
Figure 2.3.
Distribution of selected stormwater monitoring (SWM) sites around the Lake Tahoe
Basin. See Table 2.1 and Appendix E for location names corresponding to site IDs
shown.
11
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
2.2.2 Sample Processing
Both lake and stream samples were processed and analyzed in the same way, usually
within ten days of collection, an appropriate holding time supported by laboratory
experiments conducted by Sunman (2004) and Rabidoux (2005). In general, mechanical
stirring was not done as it can generate air bubbles that interfere with the measurement.
Instead samples were gently mixed and then dispensed for analysis. The particles of interest
are sufficiently small that settling was not an issue during analysis by the LiQuilaz (Particle
Measuring Systems) instrument.
Stormwater samples were generally processed with 48 hours of event collection
following procedures outlined for the Tahoe TMDL stormwater monitoring program
(Heyvaert et al. 2009). Event sample composites were created by flow-weighted calculation
of aliquot amounts using the half-volume interval method, and event mean concentrations
were determined from analytic result on these samples. Subsamples for nutrient and particle
analyses were taken by churn splitting each stormwater composite. Several water quality
characteristics were measured on each stormwater composite immediately after sample
processing. These include turbidity (EPA 180.1 or SM 2130B), electrical conductivity (EPA
120.1 or SM 2510B), pH (EPA 150.1 or SM 4500-HB), total suspended solids (EPA 160.2 or
SM 2540D), and organic content by loss-on-ignition (SM 2540E at 500°C).
2.3
Holding Time and Sonication Experiments
Effects from holding time and sonication on both lake and stream water samples has
been previously evaluated (Sunman, 2004; Rabidoux, 2005). Prior to March 2003, an
additional aliquot of each sample was sonicated to break up potential flocs of particle
aggregates before analysis. After comparing results from sonicated and non-sonicated lake
and stream samples, it was evident that the particle concentration changes were negligible, so
sonication was discontinued as unnecessary. Similarly, results from holding time experiments
on lake and stream water samples indicated only minimal change in terms of particle
concentration and size distribution within the first ten days of holding. Therefore, all lake and
stream samples are analyzed within ten days of collection.
The characteristics of urban stormwater runoff samples are substantially different
from lake and stream water samples. Therefore, three additional experiments were conducted
as part of this project to assess the effects of holding time on particle size distribution in
12
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
stormwater samples collected from the Lake Tahoe Basin, and to examine how sonication
and chemical dispersant may affect the measurement of PSD (Table 2.1).
Table 2.1.
Experimental design for sonication and dispersant tests on stormwater PSD.
Experime nt 1
T re atment
Replicate s
Time
Control
S onic ated
Control
3
3
3
Control
Sonicate d
0 days
D ispersa nt
5
5
5
S onic ated
Control
2 days
S onic ated
Control
7 days
S onic ated
3
3
3
3
Both
Control
Sonicate d
1 days
D ispersa nt
5
5
5
5
3
Both
Control
Sonicate d
2 days
D ispersa nt
Both
Control
5
5
5
5
5
5
Sonicate d
D ispersa nt
Both
Control
5
5
5
5
Sonicate d
D ispersa nt
5
5
Both
Control
Sonicate d
16 da ys
D ispersa nt
5
5
5
5
Both
Control
Sonicate d
32 da ys
D ispersa nt
Both
5
5
5
5
5
Time
0 days
1 day
4 days
8 days
2.3.1
E xperiment 2
Treatment
Replicates
Time
Experiment 3
D ispersant Sonication
0.000%
0.001%
99-108
days
0.005%
0.010%
0.100%
1.000%
Re plic ates
Sonicate d
Control
Sonicate d
Control
Sonicate d
Control
Sonicate d
3
3
3
Control
Sonicate d
Control
3
3
3
3
3
Sonicate d
Control
3
3
3
3
Experiment 1
One 5-gallon bucket of stormwater was collected on 10/13/09 at 12:00 PM from the
intersection of Country Club Drive and Lakeshore Blvd in Incline Village, NV during runoff
from a fall thunderstorm. In the lab at 12:30 PM the sample was prescreened at 1000 µm and
eight 250 mL bottles were filled using a churn splitter. These eight subsamples were
analyzed immediately, three using the Beckman Coulter LS-13320 laser diffraction particle
size analyzer with sonication (at a power setting of six for sixty seconds), three without
sonication, and two for TSS and turbidity. The remaining sample was then prescreened at 63
µm, and 32 additional bottles were filled. Of these, six were treated and analyzed immediately
for particle size distribution, three with sonication and three without sonication. Two additional
13
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
samples were analyzed immediately for TSS and turbidity, and 24 were stored in a cooler in
the cold room at 4°C.
The treatment (holding) times were 0 days, 1 day, 2 days, and 7 days, occurring over
the period from October 13, 2009 to October 20, 2009 (Table 2.1). Three additional samples
were sent to the Environmental Dynamics Laboratory at the University of California, Davis
for particle size analysis on the LiQuilaz, which were conducted on October 23, 2009 (day
10).
2.3.2
Experiment 2
Two 5-gallon buckets of stormwater were collected on April 12, 2010 at 10:15 AM
from an urban outfall site in Tahoe City, California at the west entrance to the Safeway
parking lot. This site receives runoff from both State Route 28 and the Lighthouse Center
parking lot. Outflow at the time of sample collection was approximately 0.07 cubic feet per
second (cfs) from event snowmelt. Both buckets were prescreened at 1000 µm in the
laboratory at 11:45 AM, and six bottles were filled using a churn splitter with 62.5 ml from
each bucket for a total of 125 ml per bottle. Two of the bottles were run for TSS and
turbidity, and four were analyzed on the LS-13320, with one receiving each of the four
treatments described below. The remaining sample from each bucket was then prescreened at
63 µm and 174 bottles were filled in the same manner. Of these, 22 were treated and
analyzed immediately and 152 were stored in a cooler in the cold room at 4°C.
At each treatment (holding) time two samples were run for TSS and turbidity. Then
five were sonicated, five were treated with the chemical dispersant sodium
hexametaphosphate (0.01% w/v final concentration), five were both sonicated and treated
with dispersant, and five controls were run without sonication or dispersant. All 20 of these
samples were then analyzed with the LS-13320. The treatment times were 0 days, 1 day, 2
days, 4 days, 8 days, 16 days and 32 days and occurred from April 12, 2010 to May 14, 2010
(Table 1). Twenty additional samples (of the day 8 holding time set) were sent to the
Environmental Dynamics Laboratory at the University of California, Davis for LiQuilaz
analysis on day 8 (conducted on 4/20/2010).
14
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
2.3.3
Experiment 3
One 5-gallon bucket of stormwater was collected on January 26, 2010 at 1:30 PM
from the outfall site in Tahoe City near the Safeway parking lot, as in experiment 2 and with
a similar outfall rate of about 0.07 cfs. This sample was stored in the laboratory cold room at
4°C in the dark until analysis using the Micromeritics Saturn DigiSizer laser diffraction
particle size analyzer, which took place from May 5 to May 14.
Before analysis, the sample was prescreened at 63 µm and then split into seventy-six
125 mL samples using a large capacity churn splitter. These sample volumes were chosen to
provide obscurations in the target range of ~30–35% without auto-dilution by the DigiSizer
before analysis. Dispersant solution was added to individual samples to yield six different
concentrations consisting of 0%, 0.001%, 0.005%, 0.01%, 0.1%, and 1% (w/v) sodium
hexametaphosphate. Three replicates were analyzed at each of these dispersant
concentrations. For each of these three replicates an analysis was first performed with no
sonication; then it was retained in the machine and sonicated for 90 seconds before being
analyzed again. In addition to these two analyses, the last replicate analyzed at each
dispersant concentration underwent three further analyses after auto-dilution to obscurations
of 25%, 15%, and 1%, respectively.
For all analyses the flow rate within the liquid sample handling unit was set to
12 L/min, the sample was circulated for 90 seconds before analysis began, the acceptable
range in obscuration was set to 0.5–45%, and the auto rinse function was turned off, so that
after initial analysis, each sample could be retained for the second analysis with 90 seconds
of sonication. Between each analysis, the liquid sample-handling unit was drained and
several rinse cycles were run manually.
2.3.4 Data Analysis
The simple two parameter lognormal distribution is often used to describe particle
size distribution in soils (Buchan 1989), and was applied here as an efficient representation
of stormwater PSD for comparative analysis of results in each experiment. The lognormal
distribution is fully characterized by its natural log mean and natural log standard deviation.
A G-test was use to compare the observed PSDs to the expected log normal distributions
with the same mean and standard deviation. The G-test is a log likelihood ratio test for
goodness-of-fit, similar to the Pearson’s chi square test where observed values are compared
15
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
to the expected values of a distribution, but is more accurate than the chi square test when
expected values are small. In these experiments the G-test was used to compare the observed
particle size distribution to the expected lognormal distribution. A p-value in the G-test is the
probability of getting a test statistic (the G value) that is at least that large if the two
distributions are in fact the same. In essence the larger the p-value the more similar the
distributions, and conversely the smaller the p-value the more these distributions differ. We
then looked at how the different attributes of the PSD (mean, standard deviation, proportion
less than 20 µm) changed through time and with different treatments (sonication and
dispersant), using multi-way ANOVA to assess the effect of time (or concentration of
dispersant in experiment 3), treatments, and interaction.
2.4
Comparative Analysis Experiments
A series of single (non-composited) highway runoff samples were collected from
multiple sites during 2009 and 2010, pre-screened at 63 µm, and then split into subsamples
that were analyzed by the Beckman Coulter LS-13320, the Micromeritics DigiSizer, and the
Particle Measuring Systems LiQuilaz instruments. In addition, turbidity and particle mass
was determined for each sample. Aliquots of selected samples were also screened at 20 µm
for equivalent comparative analyses on the <20 µm fraction filtrates.
3.
RESULTS AND DISCUSSION
3.1
Lake Sample Analysis
All data shown for Lake Tahoe waters are derived from the LTP and MLTP sites, as
described above. At both sites there is a parallel data set over time, which is presented below.
The LTP site has been used as an indicator of processes within the water column, including
the effects of near-shore processes, stream-inflow, etc. The MLTP site is in the center of the
lake and reflects in-lake processes without direct influence from the near-shore. Particle
concentration data were not collected in the lake prior to 1999, and were not collected during
parts of 2004 and 2005. Instrument malfunction caused data losses from part of 2007 and
2008.
3.1.2
LTP Samples
Figures 3.1 through 3.9 show data collected from the LTP site from 1999 through
2009. For the purposes of these figures, all particles in the size distribution from 0.5–20 m
16
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
are summed to give a total concentration of particles <20 m/mL. These total concentrations
per mL are plotted over depth and time to show the spatial and temporal distributions of fine
particles in the lake. Particle concentrations are shown by the color-bar at the right of each
contour plot, and the lake Secchi depth clarity is shown with white discs. Secchi depths are
included because Secchi depth clarity is one of the major indicators of environmental change
in the Tahoe Basin, and ultimately changes in these Secchi measurements will indicate the
relative success of efforts to reduce fine particle loading and particle accumulation within the
lake.
Figure 3.1.
Particle concentration contours in Lake Tahoe from sample collection beginning in
March of 1999 at the LTP site.
17
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.2.
Particle concentrations at LTP site for Water Year 2000. Note the decrease in particle
counts and corresponding increase in Secchi depth during lake turnover from January
to March.
Figure 3.3.
Particle concentrations at LTP site during Water Year 2001.
18
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.4.
Particle concentrations at LTP site during Water Year 2002.
Figure 3.5.
Particle concentrations at LTP site during Water Year 2003.
19
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.6.
Particle concentrations at LTP site during Water Year 2006. Samples were not
collected during WY2004, WY2005, and early WY2006.
Figure 3.7.
Particle concentrations at LTP site during Water Year 2007. Data not available from
late WY2007 due to instrument malfunction.
20
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.8.
Particle concentrations at LTP site during Water Year 2008. Data not available from
early WY2008 due to instrument malfunction.
Figure 3.9.
Particle concentrations at LTP site during Water Year 2009.
21
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Several features of fine particle distribution in the water column are immediately
evident from Figures 3.1 through 3.9. First, the concentrations of fine particles in suspension
show both spatial (depth) and temporal heterogeneity. Particle concentrations can vary
dramatically with depth on a given sampling date. Higher concentrations tend to appear near
the surface (suggesting atmospheric deposition), as well as between 10 to 30 meters
(suggesting stream-flow intrusions from Ward and Blackwood creeks near the LTP site), and
between 40 to 60 meters (depth of the deep chlorophyll maximum). There is also a marked
seasonality in the particle data, with higher concentrations appearing in summer and
especially in spring around the time of the snowmelt in the Tahoe Basin. Low concentrations
are seen in the fall and in winter when stream-flow is at a minimum. The lake tends to mix
(sometimes to the bottom and sometimes less) in the period from January to early March.
This corresponds to some of the lowest particle concentrations and some of the deepest
Secchi depth measurements.
It is intuitive that precipitation is extremely important for in-lake particle
concentrations, since rainfall tends to wash particles from the watershed (urban zones,
streams and intervening zones) into the lake. This is evident in the data from 2006 (Figure
3.6), during which time the Tahoe Basin experienced unusually high rainfall and enormous
particle concentrations at all depths in the lake. The relationship between precipitation
regime and particle concentrations in-lake is extremely important (see Figure 3.12). Dry
years tend to accumulate fewer particles than wet years and, on average, Secchi depths tend
to improve. Since managers have no control over annual precipitation regimes, they must
focus their strategies on methods that will prevent the generation and mobilization of
particles within the watershed to ultimately address clarity decline at Tahoe.
Although the shape of the fine particle profile varies dramatically by sampling date
and season, there are some features in the distribution of particles that are more or less
constant. Figure 3.10 illustrates the one-dimensional structure of particle concentrations in
the water column, presented as a ten-year average profile of particle concentration at the LTP
site. Concentrations tend to be highest in the upper water column above the Secchi depth
(blue line) and generally decline with depth, particularly below the deep chlorophyll
maximum which usually occurs not deeper than 60 meters.
Figure 3.11 shows annual average particle profiles for each year on record, from 1999
to 2009 (there is no data for 2004 and 2005). It is clear from this figure that in-lake
22
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
concentrations vary dramatically year to year. As it turns out, there is a very good correlation
between cumulative annual precipitation and in-lake particle concentrations in a given year
(Figure 3.12). This is best seen in 2006, which was an extraordinarily wet year and
consequently had extremely high lake particle concentrations. Conversely, 2001 was
extremely dry and measured particle concentrations were extremely low. The role of
precipitation regime in driving in-lake particle concentration speaks to the connectivity of
lake to watershed and the need to control particle flux from streams and especially urban
zones, particularly during wet years.
Figure 3.10.
Ten year average profile of fine particle concentrations plotted against depth at the
LTP site. Ten year averaged Secchi depth is shown as a straight line just below the 20
meter depth.
23
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.11.
Annual average profiles of fine particle concentrations plotted against depth at the LTP
site. Samples were not collected during WY2004 and WY2005.
Figure 3.12.
Regression chart of annual average lake particle concentration (<20 µm) in the LTP
water column and cumulative annual precipitation.
Figure 3.13 shows seasonally averaged particle profiles from the LTP site over the ten
years of record. This figure illustrates several important features of in-lake particle
24
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
concentrations. In all seasons, particle concentrations are at a maximum in the upper 20 m of
the water column and above the Secchi depth, likely representing urban inputs and
atmospheric deposition. This particle peak is most pronounced in summer and especially
spring, coinciding with seasonal snowmelt flows and increasing urban activities in the
watershed during summer. Particle concentrations are generally lower in the fall and the
winter, with the most prominent particle peaks at the surface of the lake.
Figure 3.13.
Seasonally averaged particle concentration profiles from the LTP site (WY1999–
2010).
Since clarity is the primary management focus at Tahoe, it is useful to look at the
depth averaged particle concentrations above the Secchi depth. In order to examine this, the
following figure shows particle concentrations averaged between the surface and the Secchi
depth. Each sample set was analyzed for particle concentration (0–20 m) and then depth
averaged in order to report a single concentration reflecting the concentration of particles
between the surface and the Secchi depth. Figure 3.14 shows the annual depth averaged
particle concentrations at the LTP site for the ten years of record.
25
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.14.
Particle concentrations depth averaged from the surface to the Secchi depth from 1999
to 2009.
3.1.3 MLTP
Figures 3.15 through 3.23 show data collected from the MLTP site from 1999
through 2009. This site represents mid-lake conditions, with less influence from near shore
processes than at the LTP site, and the figures show particle concentrations by depth and time
over an approximately ten year period of record. The MLTP site is quite deep (450 m of
sampling depth), so it essentially represents fine particle concentrations throughout the entire
water column. Like the LTP site, it is clear that particle concentrations tend to be quite high
at shallower depths and the concentrations generally decline with depth. This likely reflects a
slow settling of very small particles as well as important particle dynamics such as
aggregation, flocculation, and consumption by zooplankton.
26
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.15.
Particle concentration contours in Lake Tahoe from sample collection beginning in
January of 1999 at MLTP site.
Figure 3.16.
Particle concentrations at MLTP site for Water Year 2000.
27
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.17.
Particle concentrations at MLTP site for Water Year 2001.
Figure 3.18.
Particle concentrations at MLTP site for Water Year 2002.
28
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.19.
Particle concentrations at MLTP site for Water Year 2003.
Figure 3.20.
Particle concentrations at MLTP site during Water Year 2006. Samples were not
collected during WY2004, WY2005, and early WY2006.
29
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.21.
Particle concentrations at MLTP site during Water Year 2007. Data not available from
late WY2007 due to instrument malfunction.
Figure 3.22.
Particle concentrations at MLTP site during Water Year 2008. Data not available from
early WY2008 due to instrument malfunction.
30
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.23.
Particle concentrations at MLTP site during Water Year 2009.
The total ten year average profile of fine particle concentrations from the MLTP site
is shown in Figure 3.24. It is clear that particle concentrations peak within the top 20 meters
or so of the water column and decline with depth.
Figure 3.24.
Ten year average profile of fine particle concentrations plotted against depth at the
MLTP site.
31
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figures 3.25 and 3.26 show annual and seasonal average particle concentrations from
the MLTP site. Interestingly, particle concentrations vary dramatically year to year. At the
LTP site this type of variation is likely tied to flow from streams and urban stormwater runoff
into the lake, but the MLTP site should be largely unaffected by near shore particle inputs.
Despite this, concentrations are essentially in line with cumulative annual precipitation as
shown for the LTP site (Figure 3.12).
Figure 3.25.
Annual average profiles of fine particle concentrations plotted against depth at the
MLTP site. Samples were not collected during WY2005.
32
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.26.
3.2
Seasonally averaged particle concentration profiles from the LTP site (WY1999–
2010).
Stream Sample Analysis
Analysis from LTIMP (Lake Tahoe Interagency Monitoring Program) streams gives
an indication of the relative importance of different streams contributing particles to Lake
Tahoe. The following figures are organized into two display sets from data produced by PSD
analysis with the LiQuilaz instrument. All particles less than 20 microns in diameter for each
sample have been summed to yield the total (<20 µm) particle concentrations. In the first set,
annual average <20 µm particle concentrations (#/mL) are reported for each stream and for
each year of record from 2002 until 2010. The second set shows annual average <20 µm
particle flux (#/second), which was determined from measured particle concentrations and
instantaneous stream-flows at corresponding USGS gaging stations. Thus, the first set of
plots shows the relative concentration of particles coming from each LTIMP stream while the
second set of plots shows the relative particle flux from each of these streams.
Figure 3.27 gives a condensed overview of the annual average particle concentration
in each LTIMP stream monitored during the years of record (data is missing for 2005 and
Trout Creek is not shown). More detail is provided in subsequent charts, but the most
interesting feature in this figure is that relative differences in stream particle concentrations
33
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
are not consistent over time. Each stream varies in its relative ranking over the years,
although Blackwood Creek is generally high and Logan House Creek is always low. The
other important feature of this plot is that average stream particle concentrations are shown to
vary by over two orders of magnitude.
Figure 3.27.
Annual average fine particle concentrations in LTIMP streams for all years of record.
Figures 3.28 and 3.29 show the same data as above, but broken out into individual
sites and years. As discussed previously, Water Year 2006 received much more precipitation
than usual and this is evident in the elevated concentrations of fine particle for most streams
compared to other years. Each year certain streams tend to produce higher concentrations of
particles compared to other streams, but this is not consistent through time. The variation
between sites each year is probably driven by differences spatial precipitation patterns as
well as localized processes linked to particle accumulation and flushing, fire, land
development and so forth.
34
35
Figure 3.28.
Annual average fine particle concentration (#/mL) for LTIMP streams by site. (2005 data not available.)
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.29.
Annual average fine particle concentration (#/mL) for LTIMP streams by year.
(2005 data not available.) BC=Blackwood Creek, ERC=Eagle Rock Creek,
EC=Edgewood Creek, GC=General Creek, GBC=Glenbrook Creek, IC=Incline
Creek, LHC=Logan House Creek, TC=Trout Creek, TRC=Third Creek,
UT=Upper Truckee River, and WC=Ward Creek.
36
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.30 shows the annual average particle flux at each LTIMP stream. As in
the case of particle concentration, there are two major distinguishing characteristics. First,
there is much annual variation, with factors such as precipitation, land use and restoration
projects likely influencing the particle flux on an annual basis. Second, and more
importantly, specific streams always dominate particle flux (and by inference loading),
which is different from the case with particle concentrations shown in Fig. 3.28. The
Upper Truckee River releases about an order of magnitude more fine particles than Trout
Creek, with the next highest fine particle flux. Similarly, both Trout Creek and
Blackwood Creek deliver an order of magnitude more fine particles than those streams
with the next highest flux. Clearly, when considering the impacts of suspended particles
on Lake Tahoe, one must recognize that certain streams are dominant contributors of
clarity-reducing fine particles each year.
Figure 3.31 shows annual average particle flux for LTIMP streams organized by
year. Streamflow data for the Upper Truckee River and Trout Creek were not yet
available for 2010, so no data appears for those streams in that year. As in the case of
concentration, particle flux varies over about two orders of magnitude between different
streams in a given year. Clearly, the relative contribution from different streams needs to
be carefully considered when developing strategies to reduce particle loading into Lake
Tahoe.
37
38
Figure 3.30.
Annual average fine particle (<20 µm) flux (#/second) for each LTIMP stream by site. (2005 data not available.)
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.31.
Annual average fine particle (<20 µm) flux (#/second) for each LTIMP stream by
year. (2005 data not available.) BC=Blackwood Creek, ERC=Eagle Rock Creek,
EC=Edgewood Creek, GC=General Creek, GBC=Glenbrook Creek, IC=Incline
Creek, LHC=Logan House Creek, TC=Trout Creek, TRC=Third Creek,
UT=Upper Truckee River, and WC=Ward Creek.
39
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
3.3
Stormwater Runoff Sample Analysis
Particle size samples from urban runoff have been collected from a variety of
stormwater monitoring sites around the Tahoe Basin since 2003, as part of the Tahoe
TMDL Stormwater Monitoring Program and affiliated projects (Figure 2.3). These have
been analyzed using the Beckman Coulter LS-13320, and available data from all urban
stormwater monitoring through Water Year 2009 have been assembled into a consistent
format for evaluation of site characteristics and patterns (Appendix E).
An example set of PSD profiles representing different samples collected at the
same site over the course of a year is shown Figure 3.32, representing diverse event types
at the Osgood Avenue site in South Lake Tahoe from March 2003 through March 2004.
Clearly, there is considerable variation in these particle size distributions, and visualizing
a larger set of samples from multiple sites in this way would be difficult. However, most
of these profiles have a relatively characteristic shape overall that can be succinctly
described by taking the average or median values in each size class, yielding a
characteristic (median or mean) PSD from all the event samples collected at a site.
Figure 3.32.
Particle size distributions of individual urban stormwater samples collected at
Osgood Avenue site from March 2003 through March 2004.
40
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
A comparison of characteristic (median) PSD profiles between stormwater sites is
shown in Figure 3.33, representing 773 separate samples collected at fifteen sites during
Water Years 2003 through 2009. As with individual sample profiles, there is a fair
amount of variation between sites, and it is difficult to discern the relevant differences.
However, a closer look at the characteristic PSD profiles for Mountain Drive and the two
Round Hill sites shows their distributions are shifted right, indicating a higher percentage
of larger particles in the samples from these sites compared to the other sites.
Figure 3.33.
Median particle size profiles for individual stormwater monitoring sites. Over eight
hundred samples were collected and analyzed at these sites from WY2003 thru
WY2009.
A clearer example of this difference in characteristic particle size distribution is
evident in Figure 3.34, where Mountain Drive is compared to several other urban sites.
Each characteristic PSD profile represents median values from site samples reported in
the same series of size classes shown for Mountain Drive (at every half phi point from
0.24 to 1000 µm). Profile shapes from each of the urban sites shown in this figure are
quite similar, differing primarily in peakedness (kurtosis) of the distribution and depth of
their shoulders. However, the characteristic PSD for Mountain Drive is shifted toward
41
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
coarser particles compared to the other sites. This distinction is likely due to differences
in land use and size of the source drainage, as well as underlying geology, topography
and other factors.
Figure 3.34.
Median PSD profiles for selected urban stormwater monitoring sites compared to
Mountain Drive. Size class midpoints are shown on the MD profile, and are the
same for each site.
The land use and landscape characteristics at each monitoring site are shown in
Table 3.1. Mountain Drive is a relatively steep drainage (high erosion hazard) with low
density residential land use over diorite and granodiorite or glacial outwash and till from
those parent materials. Round Hill is similar in terms of underlying geology and land use,
which may explain their similarity in terms of PSD profiles (Figure 3.35). The urban sites
in Figure 3.34 are all in areas of South Lake Tahoe and North Tahoe that receive runoff
from relatively high traffic use (vehicle miles).
42
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Table 3.1.
Land use and landscape characteristics of urban stormwater monitoring sites.
SF=single family; MF=multi-family; CICI=commercial, industrial,
communications and utilities; P=pervious; I=impervious. Erosion hazard primarily
reflects steepness of topography within the drainage.
Figure 3.35.
Median PSD profiles for Round Hill sites and Mountain Drive. Geology, land use
and landscape characteristics may explain the similarity of these profiles. Size
class midpoints are shown on the MD profile, and are the same for each site.
43
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Two final examples of site characteristic PSDs are shown below. In Figure 3.36
the Mountain Drive site is compared to Speedboat (SB) and South Y (SY), which are
both long term, intensively monitored sites at opposite ends of the lake in drainages
consisting of fairly intensive mixed land uses including commercial and highway runoff.
As can be seen in the chart, SB and SY are relatively similar to each other but are quite
dissimilar from the characteristic PSD of Mountain Drive, which consists primarily of
lower intensity residential land use (similar to the Round Hill sites).
Figure 3.36.
Median PSD profiles for two intensively monitored, long-term sites at opposite
ends of the Tahoe Basin. The MD profile is shown for comparison. Size class
midpoints are the same for each site.
The similarity in median PSD profiles between nearby urban sites can be striking
in some cases. For example, the Bonanza (BB) and the Osgood (O3) sites in South Lake
Tahoe are nearly equivalent in terms of their characteristic particle size distributions
(Figure 3.37), although they are separated by more than four miles.
44
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.37.
Similarity of median PSD profiles at two nearby stormwater monitoring sites in
South Lake Tahoe. Each is in a different drainage, separated by about four and a
half miles.
A useful comparative metric for particle size distributions, and one which the
Tahoe TMDL is expected to address, is the total number of fine sediment particles
between 0.5 to 16 µm in size (FSP). These have been calculated from LS-13320 analytic
results for all samples shown in Appendix E, assuming spherical particle shape and
consistent density. Although there is no clear relationship between TSS and FSP, likely
because of significant particle mass in the >16 µm fraction, there is a good relationship
between turbidity and FSP (Figure 3.38). This is logical since fine particles in suspension
usually contribute the most to light scattering and absorption, which is also the reason
they are an important factor in the Tahoe TMDL for lake clarity. A polynomial equation
was fitted to the data shown in Figure 3.38, because it was reasonable to assume that
increasing density of particles in solution results in less change of turbidity per increment
of increasing particle concentration. Note, however, that the linear equation serves almost
as well (R2 = 0.8247 vs. R2 = 0.8334) and the added complexity of a polynomial may not
be necessary for samples typical of Tahoe urban runoff. These results were disseminated
early in the project as they suggested that stormwater turbidity could serve as a useful
surrogate for FSP concentration. While the potential application of turbidity as a proxy
45
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
indicator for FSP remains under investigation, it is expected that continued refinement of
this relationship will ultimately provide a useful alternative to PSD analysis on each and
every stormwater sample at Tahoe (see Sections 3.5 and 3.6.2).
Figure 3.38.
3.4
Total particles between 0.5 to 16 µm in Tahoe stormwater samples versus turbidity
(n=773). Number of particles calculated from LS-13320 data (Appendix E)
assuming spherical shape and constant density of 2.65 g/cm2.
Results from Holding Time and Sonication Experiments
The experimental design and methods for these tests were described previously in
Section 2.3. Three separate stormwater samples were collected and processed for these
experiments. In each case a large volume runoff sample was split by churn splitter into
representative subsamples and held for varying lengths of time prior to PSD analysis and
test treatment with sonication and dispersant. The sample for experiment 3 was an
archived sample collected several months earlier, and did not receive initial PSD analysis.
However, since this sample was used only to test the effect of different dispersant
concentrations with and without sonication, rather than holding time effects, an initial
PSD analysis was not a prerequisite. We used this archived sample because no significant
runoff events had occurred within the time frame allocated to run this experiment.
The October thunderstorm runoff sample collected in Incline Village for
experiment 1 contained particles ranging from less than 0.244 microns to 250 microns,
46
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
with a mean of 17.3 microns (22.5 standard deviation) and a median of 9.3 microns. In
contrast, the April snow event runoff sample collected in Tahoe City for experiment 2
had particles ranging from less than 0.244 microns to only 31.25 microns, with a mean of
5.5 microns (5.1 standard deviation) and a median of 3.7 microns. Despite these
differences in runoff type, event season, and sampling location, the distribution of
particle sizes in both of these samples had similar shape and showed similar effects with
time lapse and sonication.
Figure 3.39 shows the percentage of particles in each size bin (blue bars)
compared to the corresponding lognormal distribution (black line). As clays in each
sample began to flocculate over time the distribution became more skewed toward larger
particles sizes. On day 0 in experiment 1, about 17% of the particles were between 22–63
µm (above the mean of 17.3 µm), but by day 7 that percentage had increased to 24%.
Similarly, on day 0 in experiment 2, about 36% of the particles were between 5.5-22 µm,
but by day 8 that percentage had increased to 46%. Although the distribution of particle
sizes for samples analyzed in both experiments can be described as lognormal for all
times and treatments (Table 3.2, Figure 3.40), it is clear that by day 8 in experiment 2
(Figure 3.39) the distribution had become somewhat skewed (G-test p-value = 0.466). In
experiment 1 this shift is less dramatic because of an excursion in the original distribution
between 22–63 µm (see control day 0), but a change toward larger particles is still
apparent. In experiment 2 the particle size distribution of the control treatment began to
skew within one day after collection. In sonicated samples, however, the particle size
distribution remained more lognormal (green circles in Figure 3.40), with a p-value that
stayed between 0.73–0.80 from day 8 through day 32, while the control (no sonication or
dispersant) p-value ranged from 0.47–0.61 over the same time period. Treatment with
dispersant alone gave results equivalent to the control (p-value of 0.44–0.62), while
treatment with both dispersant and sonication (p-value of 0.75-0.81) was similar to the
sonication treatment alone, suggesting there was no impact of chemical dispersant on the
particle size distribution.
47
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
EXPERIMENT 1
Control Day 7
G test, p value = 0.982
12
% of particles in each bin
12
10
8
6
4
2
0
10
8
6
4
2
1000.00
500.00
250.00
bins
125.00
62.50
31.25
15.63
7.81
3.91
1.95
0.98
0.24
1000.00
500.00
250.00
bins
125.00
62.50
31.25
15.63
7.81
3.91
1.95
0.98
0.49
0.24
0
0.49
% of particles in each bin
14
Control Day 0
G test, p value = 0.924
14
EXPERIMENT 2
14
Control Day 0
G test, p value = 0.874
14
% of particles in each bin
10
8
6
4
2
0
Control Day 8
G test,p value = 0.466
12
10
8
6
4
2
1000.00
500.00
250.00
bins
125.00
62.50
31.25
15.63
7.81
3.91
1.95
0.98
0.24
1000.00
500.00
250.00
62.50
125.00
bins
31.25
15.63
7.81
3.91
1.95
0.98
0.49
0.24
0
0.49
% of particles in each bin
12
EXPERIMENT 3
Control Day 99-108
G test, p value = 0.194
16
% of particles in each bin
14
12
10
8
6
4
2
Figure 3.39.
1000.00
500.00
250.00
62.50
125.00
bins
31.25
15.63
7.81
3.91
1.95
0.98
0.49
0.24
0
Comparison of control (no treatment) samples to their lognormal distributions
(average of replicates). Blue bars are percent volume of total particles that fall
within each size category. The black line represents a lognormal curve with the
same mean and standard deviation. See section 2.3.4 for an explanation of p-values
in this context.
48
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Table 3.2.
Data from G-tests for comparing PSDs to their corresponding lognormal
distributions. The larger the p-value the more similar each measured PSD is to the
lognormal. Note the decreasing p-values for control (no treatment) samples with
increasing time in experiment 2. In experiment 3 the control represents sample
without dispersant or sonication (holding time is not a factor).
EXPERIMENT 1
time
treatment
Control
0 days
Sonicated
Control
1 day
Sonicated
Control
2 days
Sonicated
Control
7 days
Sonicated
G
1.998
1.364
1.620
1.060
1.732
1.166
1.113
1.409
EXPERIMENT 2
p
william's corrected
correction
G
df value
1.022
1.955 6 0.924
1.022
1.334 6 0.970
1.022
1.585 6 0.954
1.022
1.037 6 0.984
1.022
1.694 6 0.946
1.022
1.141 6 0.980
1.022
1.089 6 0.982
1.022
1.378 6 0.967
time
0 days
1 day
2 days
4 days
8 days
16 days
32 days
EXPERIMENT 3
Dispersant
0.000%
0.001%
0.005%
0.010%
0.100%
1.000%
treatment
Control
Sonicated
Control
Sonicated
Control
Sonicated
Control
Sonicated
Control
Sonicated
Control
Sonicated
william's corrected
p
G correction
G
df value
8.839
1.022
8.647 6 0.194
4.591
1.022
4.491 6 0.611
7.874
1.022
7.703 6 0.261
4.807
1.022
4.703 6 0.582
7.946
1.022
7.773 6 0.255
4.057
1.022
3.969 6 0.681
7.761
1.022
7.592 6 0.270
4.298
1.022
4.204 6 0.649
7.618
1.022
7.453 6 0.281
4.013
1.022
3.926 6 0.687
7.378
1.022
7.217 6 0.301
3.598
1.022
3.520 6 0.741
49
treatment
Control
Dispersant
Sonicated
Both
Control
Dispersant
Sonicated
Both
Control
Dispersant
Sonicated
Both
Control
Dispersant
Sonicated
Both
Control
Dispersant
Sonicated
Both
Control
Dispersant
Sonicated
Both
Control
Dispersant
Sonicated
Both
p
william's corrected
G correction
G
df value
2.503
1.022
2.449 6 0.874
2.296
1.022
2.246 6 0.896
2.499
1.022
2.445 6 0.875
2.441
1.022
2.388 6 0.881
3.208
1.022
3.138 6 0.791
3.338
1.022
3.266 6 0.775
2.645
1.022
2.588 6 0.859
2.387
1.022
2.335 6 0.886
3.705
1.022
3.625 6 0.727
3.925
1.022
3.840 6 0.698
2.964
1.022
2.900 6 0.821
2.934
1.022
2.870 6 0.825
4.667
1.022
4.566 6 0.601
4.964
1.022
4.856 6 0.562
3.393
1.022
3.319 6 0.768
3.062
1.022
2.995 6 0.809
5.753
1.022
5.628 6 0.466
5.982
1.022
5.852 6 0.440
3.694
1.022
3.614 6 0.729
3.506
1.022
3.430 6 0.753
4.647
1.022
4.546 6 0.603
5.031
1.022
4.921 6 0.554
3.455
1.022
3.380 6 0.760
3.278
1.022
3.206 6 0.783
4.244
1.022
4.152 6 0.656
4.482
1.022
4.385 6 0.625
3.144
1.022
3.075 6 0.799
3.080
1.022
3.013 6 0.807
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Experiment 1
Experiment 2
Experiment 3
Figure 3.40.
Plot of G-test results from Table 3.2. The larger the p-value the more similar the
distribution is to the corresponding lognormal. Experiment 1 does not show much
change with time from original distribution, but experiment 2 shows sonication
(with and without dispersant) maintains a lognormal distribution over time.
Experiment 3 shows minimal effect with increasing dispersant concentration, and a
highly skewed PSD for the control because of long initial holding time.
50
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.41 shows the effects of sonication, dispersant, and time on three
stormwater samples. While mean particle size increased through time in both experiments
1 and 2, the sonication treatment reduced this change for all time periods except day 0. A
post-hoc Tukey test was used in conjunction with ANOVA to identify treatment effects.
The results of this analysis demonstrated a significant impact of time, treatment, and timeby-treatment interaction on mean particle size for both experiments 1 and 2 (Table 3.3).
The charts for PSD characteristics in Figure 3.42 show that by day 2 in
experiment 1, and by day 1 in experiment 2, the control (no treatment) means were
significantly different from the original sample means (control, day 0). The means for
sonicated samples, however, were never significantly different from the original (control)
sample mean in experiment 1. And in experiment 2 the means for sonicated samples only
became significantly different after day 8, but always remained much closer to the
original (control, day 0) mean than did the control (no treatment) samples over time.
Note, however, that on day 0 in both experiments the sonicated samples showed a
significantly lower mean than the control (day 0). This suggests that application of
sonication treatment immediately after stormwater sample collection causes undesirable
changes in the PSD, but that sonication may help restore the characteristics of the original
distribution after a holding time of one day or longer.
There was no significant effect from dispersant in experiments 1 and 2. The mean
particle size for samples with dispersant treatment tracked changes in control samples
over time, while the samples treated with both sonication and dispersant were similar to
the sonicated only treatments. The sample used for experiment 3 had been stored for
three months as an archive sample, so particle size distribution at the beginning of this
experiment represents some degree of flocculation before the experiment, as evident in a
skewed distribution compared to the lognormal (Figure 3.39). The control sample (no
dispersant or sonication) in experiment 3 had particles ranging from less than 0.244
microns to 177 microns with a mean of 10.1 microns (10.5 standard deviation) and a
median of 7.1 microns. This distribution falls between the distribution of particles sizes
from experiments 1 and 2, and although still lognormal it only had a p-value of 0.194 in
the G-test.
51
52
Figure 3.41.
Holding time effects on particle size distribution. Control samples received no treatment. Test samples received sonication or
dispersant treatment on the days indicated. Note that the sample for experiment 3 was used to test effect of different dispersant
concentrations with and without sonication, so was not analyzed for PSD at time of collection.
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
The ANOVA results from experiment 3 show a significant effect from both
sonication and dispersant concentration (Table 3.3) on mean particle diameter and the
percentage less than 20 micron fraction, but no significant interaction between sonication
and dispersant. The significant effect from dispersant results in an increased mean
particle size and a decreased percentage of particles less than 20 microns, but only at the
highest dispersant concentration (1%), most likely because of instability in dispersant or
possibly bubble formation. In contrast, the effect of sonication is similar to results from
experiments 1 and 2, with reduced mean particle size (experiment 1 = 7%; experiment 2
= 11%; experiment 3 = 22%), probably reflecting the amount of shift back to original
PSD characteristics after increasingly longer holding times (Figure 3.43).
These experiments clearly demonstrate that holding time can affect the results of
particle size analysis in stormwater samples, as noted in previous studies (Kayhanian et
al. 2005; Li et al. 2006). Over the 7-day holding time in experiment 1 the mean particle
size of control samples increased by an average of 11%, with significant change by day 2.
Similarly, over the course of the first 8 days in experiment 2 there was a 14% increase in
mean particle size, with significant change by day 1, and an additional 9% increase by the
end of the experiment on day 32. The percentage of particles less than 20 microns
decreased by 9% on average over 7 days in experiment 1, but only decreased by 0.6%
over the first 8 days in experiment 2 (with an additional 1.6% by day 32). This difference
between experiments for particle fractions less than 20 microns was likely the result of
their initial distributions, as over 99% of the particles on day 0 in experiment 2 were less
than 20 microns (versus 74% in experiment 1). Thus, only small particles were initially
present in experiment 2 and they created flocs that were still, for the most part, smaller
than 20 microns – as evident from the 7% increase in percentage of particles less than 5
µm (the average particle size for this sample).
53
Table 3.3.
ANOVA results for experimental treatments of holding time and dispersant on PSD parameters (Ln mean, Ln standard deviation
and %volume <20 µm). Ln is the natural logarithm, DF is degrees of freedom, SS is the sum of the squares, Pr > F is probability of
getting a result greater than the F-value shown. Treatment represents sonication in each experiment (1, 2 and 3). Highly significant
effects are seen with time and sonication in most cases (F-value <0.0001), with significant effects in several others (F-value <0.05).
EXPERIMENT 1
Source
time
treatment
time*treatment
DF
3
1
3
Ln mean
Mean
F
SS
Square
Value Pr > F
0.18239
0.0608 16.61 <.0001
0.16287 0.16287 44.5 <.0001
0.0291
0.0097 2.65 0.0842
DF
6
3
18
Ln mean
Mean
SS
Square
1.03995 0.17332
0.88516 0.29505
0.04907 0.00273
DF
5
1
5
Ln mean
F
Mean
Value Pr > F
SS
Square
0.09904 0.01981 8.38 0.0001
1.39134 1.39134 588.3 <.0001
0.0155
0.0031 1.31 0.2929
Source
time
treatment
time*treatment
Ln standard deviation
Mean
F
DF SS
Square
Value Pr > F
3
0.0026 0.00087 2.23 0.1244
1 0.00054 0.00054 1.38 0.2571
3 0.00041 0.00014 0.35 0.7879
Source
time
treatment
time*treatment
Ln standard deviation
Mean
F
Value Pr > F
DF SS
Square
6 0.00288 0.00048 6.47 <.0001
3 0.01063 0.00354 47.82 <.0001
18
0.0019 0.00011 1.42 0.1342
Source
time
treatment
time*treatment
Less than 20 microns
Mean
DF SS
Square
3 194.881 64.9605
1 269.468 269.468
3 50.7374 16.9125
F
Value Pr > F
18.95 <.0001
78.61 <.0001
4.93 0.013
Source
time
treatment
time*treatment
Less than 20 microns
Mean
DF SS
Square
6
53.885 8.98083
3 53.6112 17.8704
18 9.41785 0.52321
F
Value
83.05
165.3
4.84
Less than 20 microns
Mean
DF SS
Square
5 20.4282 4.08564
1 185.972 185.972
5 1.55788 0.31158
F
Value Pr > F
15.13 <.0001
688.6 <.0001
1.15 0.360
EXPERIMENT 2
54
Source
time
treatment
time*treatment
F
Value
373.8
636.3
5.88
Pr > F
<.0001
<.0001
<.0001
Pr > F
<.0001
<.0001
<.0001
EXPERIMENT 3
Source
dispersant
treatment
disp.*treatment
Source
dispersant
treatment
disp.*treatment
Ln standard deviation
Mean
F
DF SS
Square
Value Pr > F
5 0.00524 0.00105 2.27 0.0798
1 0.03333 0.03333 72.19 <.0001
5 0.00017 3.4E-05 0.07 0.9958
Source
dispersant
treatment
disp.*treatment
55
Figure 3.42.
Effect of sonication and dispersant on particle size distribution parameters in three experiments (with three different stormwater
samples). Beyond the dotted lines indicates region of significant difference from initial control samples.
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.43.
Volume frequency distribution with and without 90 seconds of sonication for three
varying levels of dispersant addition (0%, 0.01%, 1.0% w/v).
The increase in mean particle size and the decrease in percentage of particles less
than 20 microns for control samples were not linear with respect to time. There was a
rapid change over the first week and then a leveling out over the next three weeks. The
Tukey test showed that after day 8 the mean particles size and the percentage less than 20
microns both remained the same, although there seemed to be a slight decreasing trend in
the percentage less than 20 micron fraction, and experiment 3 suggests a continued
skewing of distribution over time (3 months) as it was the most different from lognormal
in these experiments.
Notably, sonication significantly reduced the impact of flocculation over time. In
both experiments 1 and 2 the percentage of particles less than 20 microns in sonicated
treatment was not significantly different from the day 0 control for any day beyond day 0.
And while sonication increased the percentage of particles less than 20 microns in both
experiments on day 0, this increase was only significant in experiment 2. Sonication also
reduced the change in mean particle size over time compared to control samples. In
experiment 1 the mean particles size for sonicated treatment was never significantly
56
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
different from the day 0 control. In experiment 2 although mean particle size for
sonicated treatment on days 8 through 32 were significantly higher than the day 0 control,
they were much closer to original mean particle size (control, day 0) than the nonsonicated control samples from those same days. Furthermore, addition of dispersant
(sodium hexametaphosphate) does not appear to significantly improve results
(experiments 2 and 3).
3.5
Comparative Results from Particle Size Analysis Instruments
The results from highway runoff sample splits analyzed by both the Beckman
Coulter LS-13320 and the Micromeritics DigiSizer using equivalent methods and
parameters on both instruments (as described in Appendix B) were relatively consistent
overall, although slight shifts in percent volume distribution were sometimes evident
(Figure 3.44). Frequently, data from the LS-13320 produced a minor non-monotonic
excursion near the sand-silt boundary (63 µm) that generally was not evident in the
DigiSizer data. This could be an artifact of analysis; for example, bubbles forming in
solution at higher pump speeds during instrument sample circulation or with sonication.
On rare occasion the sample PSD curves differed substantially between these two
instruments, as demonstrated in the last panel of Figure 3.44. This type of difference was
most common when the concentrations of suspended sediment were very low or when
instrument obscuration values were below optimal levels, usually accompanied by
evidence of increased variability in replicate runs during the laser particle size analysis.
Total fine particle concentrations (0.5–16 µm) were determined from the LS13320 and DigiSizer data for each of the highway event runoff test samples by assuming
spherical particle shape and a consistent particle density of 2.65 g/cm3 in the
corresponding TSS fractions (screened at 63 µm). These results were then compared to
analytic results from split samples run on the LiQuilaz, after prescreening at 20 µm. In
total there were 34 test samples for which results were available from all three
instruments. Comparative examples of analytic results from all three LPSA instruments
are shown in Figure 3.45, with particle concentrations reported in size bins corresponding
to half-phi breaks over the 0.5–16 µm range (see Appendix A).
57
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.44
Examples of comparative LS-13320 and DigiSizer analyses on split stormwater
samples. Most distributions match closely, although on occasion they can differ
substantially (e.g. sample PSD-335-2).
58
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.45
Examples of particle concentrations in size bins from 0.5–16 µm derived from LS13320, DigiSizer, and LiQuilaz analysis on split samples.
59
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
As expected the particle concentrations within successive size bins generally
decreased with increasing particle size. While the LS-13320 and DigiSizer results are
quite similar, they are distinctly different from LiQuilaz results. In every case the
LiQuilaz produced higher particle concentrations in the larger size bins compared to the
LS-13320 and DigiSizer, and generally lower concentrations in the smaller particle size
bins. One reason for higher particle concentrations in the larger size bins from LiQuilaz
analysis may be due to more particle overlap and subsequent beam shading within this
instrument at the higher concentrations typical of stormwater, compared to lake or stream
water. On average, stormwater fine particle concentrations range from 106 to greater than
108 (#/mL), compared to a range of 104 to 105 for stream samples and generally less than
104 in Lake Tahoe water samples. According to manufacturer specification the upper
limit for particle concentration by LiQuilaz analysis is 104 (1E4) particles per mL, and in
practice it has been found best to keep concentrations below 7x104 particles/mL.
Stormwater samples were diluted prior to analysis, but increasing dilutions amplify the
errors in LiQuilaz particle counts.
Since the Lake Tahoe TMDL has identified fine sediment particles less than 16
µm in diameter as a pollutant of concern (Lahontan, 2010), results from the comparative
PSD analysis on split stormwater samples are shown in Figure 3.46 in terms of their total
fine particle concentrations (from 0.5–16 µm). Due to the consistently lower
concentrations measured by LiQuilaz within smaller size classes, the total fine sediment
particle (FSP) concentrations from LiQuilaz are almost always less than corresponding
sample concentrations from the LS-13320 and the DigiSizer instruments. Exceptions
occur when excessive sample dilutions are needed for LiQuilaz analysis, as evident for
two of the samples shown in Figure 3.46 (PSD-141-2 and PSD-181-1 were both diluted
at 40,000:1). Experience shows that analytic dilutions above about 10,000:1 can seriously
impair the quality of results from LiQuilaz analysis. Indeed, two samples with even
higher dilutions (≥80,000:1) are not shown in Figure 3.46 because their resulting
(erroneous) concentrations (>109) far exceed the display scale.
60
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.46
Examples of comparative fine sediment particle concentrations (0.5–16 µm)
derived from LS-13320, DigiSizer, and LiQuilaz analyses on split samples.
Although total FSP concentrations derived from these three instruments differ, the
results generally follow similar patterns in terms of their relative differences. The
DigiSizer FSP concentrations are on average 31% greater than results from the LS-13320
(Fig 3.47-A), while LiQuilaz FSP concentrations are on average 42% less than the LS13320 results (Fig 3.47-B).
The FSP concentrations determined from LS-13320 data show a much stronger
correlation to DigiSizer data (R2 = 0.98) than they do to LiQuilaz results (R2 = 0.77), as
evident from the data on split samples shown in Figure 3.48. This is probably because the
LiQuilaz instrument is optimized for measuring at very low particle concentrations, as in
clean room environments and high-tech manufacturing facilities. While appropriate for
the extremely clear waters of Lake Tahoe and its tributary streams, it goes well beyond
instrument specification to attempt stormwater analyses with this instrument. One
potential advantage of the LiQuilaz, however, is that it provides particle counts directly,
whereas output from the DigiSizer and the LS-13320 both require subsequent calculation
of estimated particle numbers. Our objective in conducting this comparative study was to
assess whether particle counts from the LiQuilaz could be used to confirm or calibrate
calculated stormwater FSP concentrations from the other two instruments. Unfortunately,
61
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
results of stormwater analysis with the LiQuilaz were not consistent with this objective,
given its design optimization for clean water analysis, so alternative strategies are in
development.
DigiSizer vs. LS-13320
(A)
LiQuilaz vs. LS-13320
Figure 3.47.
(B)
Histograms of percentage differences among split sample FSP concentrations from
the (A) DigiSizer versus LS-13320, and from the (B) LiQuilaz versus LS-13320.
The results are from data shown in Fig. 3.46, but eliminating LiQuilaz PSD-141-2
and PSD-181-1 as extreme outliers (see text).
Further evidence that the LiQuilaz is not well suited to stormwater analyses is
seen in the scatterplots of sample turbidity versus FSP concentration (Figure 3.49). In this
test each sample was prescreened at 20 µm, then split for subsequent analyses of
fractional turbidity and fine sediment particle concentration (by each instrument). Clearly
the LS-13320 results provide a much better correlation to sample turbidity (R2 = 0.92)
62
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
than do the LiQuilaz results (R2 = 0.64), even having excluded the data for samples with
dilutions above 10,000:1.
(A)
(B)
Figure 3.48.
Scatterplots of (A) LS-13320 results versus DigiSizer and (B) LS-13320 versus
LiQuilaz for total fine particle concentrations (0.5–16 µm) in sample splits, with
fitted linear regression lines.
In considering a causal relationship between FSP concentration and turbidity, it is
technically the particle concentration that should be considered the independent
(predictor) variable. However, we are interested in using turbidity as a proxy indicator or
63
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
surrogate metric for particle counts, so FSP concentration is treated as the dependent
variable. Overall, these results suggest that up to 90% or more of the variability in fine
particle concentrations (0.5–16 µm) can be linked to sample turbidity, which is promising
for the potential field and laboratory applications of this approach.
(A)
(B)
Figure 3.49.
Scatterplots of fractional turbidity (<20 µm) versus (A) LS-13320 analysis and (B)
LiQuilaz analysis for total fine particle concentrations (0.5–16 µm) in sample
splits, showing fitted linear regression lines (n=36).
64
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
On first consideration, it may seem that a direct measurement of bulk (0.5–16 µm)
FSP mass would present a useful alternative to laser particle size analysis for the
determination of fine particle concentration. Although there are no readily available 16
µm screen filters or sieves, the 20 µm sieve (U.S. Standard #635) is close enough for the
purposes of testing this relationship between FSP mass and FSP numbers. Therefore,
samples were prescreened through a 20 µm mesh and then split for analysis of fine
particle concentrations by LiQuilaz and for analysis of fractional TSS on the prescreened
fractions, which are reported here as TSS<20 (mg/L). The results shown in Figure 3.50
demonstrate that measurement of bulk FSP mass concentration (mg/L) yields a poor
correlation with LiQuilaz data, even worse than the correlation between LiQuilaz data
and turbidity (Fig. 3.49-B) or between LiQuilaz and the LS-13320 (Fig. 3.48-B). While a
similar comparison could be conducted with the LS-13320 or DigiSizer, the results would
be subject to spurious correlation with mass in the calculation of particle numbers, so
those results are not shown, although the inferred correlation from those tests is similarly
quite low.
Figure 3.50.
Scatterplot of fractional TSS (<20 µm) versus LiQuilaz analysis for total fine
particle concentrations (0.5–16 µm) in sample splits, showing fitted linear
regression line (n=36).
The Pollutant Load Reduction Model (PLRM) uses FSP mass concentration
(PLRM, 2009) in its routines, a convention that allows it to scale existing processes built
65
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
into the underlying U.S. EPA Stormwater Management Model (SWMM). While this
approach may not be ideal, it is important to note that initial calibrations for the PLRM
were based on LPSA data derived from the TMDL Stormwater Monitoring Study, where
TSS results from each sample were proportioned according to corresponding particle size
distribution data and reported as the estimated mass within each half-phi size class. This
approach is fundamentally different from a single bulk mass measurement with physical
sample separation at the 20 µm (nominal 16 µm) threshold. The measurement of bulk
FSP mass (<20 µm) may have general application when particle size distributions are
fairly consistent between samples, which would explain the relatively good correlation
between TSS<20 and turbidity<20 shown in Figure 3.51. Nonetheless, in terms of optical
conditions it is the number of particles within the FSP range (0.5-16 µm) that directly
affects lake clarity and is used as input data to the Lake Tahoe Clarity Model (Lahontan
and NDEP, 2010). As an example of this distinction, consider that a specific mass of
particles between 8–16 µm will have much less effect on lake clarity than an equivalent
mass of particles between 0.5–8 µm. In summary, while bulk FSP mass concentration is
not as reliable a proxy indicator as turbidity is for FSP number concentration (Fig. 3.38
and 3.49-A), it may ultimately play a role in continued refinement of these surrogate
metrics.
Figure 3.51.
Scatterplot of fractional TSS (<20 µm) versus fractional turbidity (<20 µm) in
stormwater sample splits, with fitted linear regression lines (n=36).
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
As discussed above, there is not a one-to-one correspondence between the three
different LPSA instruments tested. Nor is there currently available a suitable absolute
standard with known particle numbers against which to validate the output. Although
each instrument is calibrated to traceable certified standards, it is well known that sample
results can vary between instruments, as observed in Figure 3.47. On the other hand,
results from the LS-13320 and the DigiSizer correlate remarkably well, so we continue to
refine these relationships and explore suitable standards for estimating and reporting
accurate FSP concentrations.
3.6
Recommendations for Tahoe Particle Size Analysis
3.6.1
Lake Tahoe Samples and Stream Samples
The main problem in assessing fine particle distributions in Lake Tahoe is that the
measurements are conducted on samples with extremely low particle concentrations.
Although various instruments are commercially available to assess particle
concentrations in aqueous suspension, very few work within the size range of interest
(0.5–16 m) and at the low concentrations characteristic of Lake Tahoe and its tributary
streams. In order to accurately assess FSP concentrations in Lake Tahoe water samples,
we recommend continued use of the LiQuilaz laser diffractometer (Particle Measuring
Systems), as described in Section 2.1.1, or use of an equivalent system capable of
measuring particle numbers and PSD at very low concentrations. Unfortunately, as
shown in this study, the LiQuilaz is not well suited for measuring fine sediment particles
at higher concentrations typical of stormwater.
To conduct the analysis, lake and stream samples are dispensed into a graduated
cylinder and then covered with Parafilm to minimize contamination. Mixing is
accomplished by gently inverting the graduated cylinder several times, and then samples
are analyzed immediately before settling can occur. The LiQuilaz instrument draws four
10 mL sub-samples into the collection tube. The first sub-sample is discarded and is
primarily intended to flush the system. The next three 10 mL aliquots are each measured
for particle size distribution. Nanopure blank water samples are analyzed prior to, during,
and at the end of each experiment to ensure quality control. If dilution is necessary, a
quantity of Nanopure water is measured into a graduated cylinder and then the sample is
added. Data from the three replicate aliquots are averaged, corrected for dilutions, and
67
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
reported in the size range delineations corresponding to the bin classifications shown in
Appendices C and D (i.e., 0.5, 0.63, 0.794, 1.0, 1.414, 2.0, 2.828, 4.0, 4.757, 5.657,
6.727, 8.0, 11.314, 16.0 and 20.0 μm), or alternatively can be reported at half-phi
intervals or finer.
3.6.2 Tahoe Stormwater Runoff Samples
For stormwater analyses to be comparable, either across time at the same location
or across locations at the same time, it is essential that consistent standards be established
in terms of sampling, processing and analysis. The guidance provided in Appendix B
gives both generic and instrument-specific protocols for laser particle size analysis
(LPSA) of stormwater samples collected in the Lake Tahoe Basin. These methods are
targeted toward describing the distribution of fine particles throughout the clay and silt
size ranges shown in Appendix A (i.e., 0.24 µm through 63 µm).
A strong relationship between turbidity and fine sediment particle (FSP)
concentration in Tahoe stormwater samples was first discerned from the data assembled
by this project, an observation that was communicated to Tahoe Basin agencies as it
suggested that stormwater turbidity could serve as a useful surrogate for FSP
concentration. Those data were summarized in Figure 3.38, but are better analyzed on a
log-log scale, as shown in Figure 3.52. This relationship is based on a large set of Tahoe
stormwater samples that were collected from diverse locations and from different event
types over many years (Appendix E). The following equation has been derived from
these data, with an R2 = 0.82 and a highly significant p-value (<< 0.0001).
log10 (FSPconc) = -0.149 • log10 (TNTU)2 + 1.788 • log10 (TNTU) + 3.969
where FSPconc = the number of total particles per milliliter, with spherical equivalent
diameter from 0.5 µm to 16 µm (particles/mL);
TNTU = the measured sample turbidity in nephelometric turbidity units
(NTU).
Although a confidence band for the fitted regression line on these data is quite
narrow, the corresponding 95% prediction interval is much wider (Figure 3.52), as a
consequence of scatter (variance) represented in the data set. Thus, any new stormwater
sample collected from one of these sites would have a single predicted FSP concentration
68
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
based on the measured turbidity, but a fairly wide confidence interval for that prediction.
For example, a sample with turbidity measured at 100 NTU would be predicted to yield
(at 95% confidence) a measured FSP concentration somewhere between about 2.4E+06
and 3.3E+07 particles per mL (centered at 8.9E+06 [8.93x106] particles per mL). While
this may seem a relatively broad prediction range, it is not unexpected given the normal
variability inherent to stormwater sampling, event runoff attributes, particle
characteristics, and sample measurements themselves. The corresponding management
question is whether this range in predictive values is sufficient to support the use of
sample turbidity as a proxy metric for FSP number concentration, or whether further
refinement will be necessary.
FSP conc. (log10(#/mL))
8
7
6
5
1
2
3
Turbidity (log10(NTU))
Figure 3.52.
The 95% prediction interval for FSP concentration based on sample turbidity. Data
are the same as shown in Figure 3.38, but plotted within a log-log data frame.
69
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
There are several advantages to using turbidity measurements as a surrogate
metric for estimating FSP concentrations. First, it is a cost-effective alternative to the
complete particle size analysis of each and every Tahoe stormwater sample. In addition,
turbidity measurements generally can be conducted shortly after sample collection, with
equipment that is readily available and easy to use. Third, with proper application and
calibration, it may be possible to monitor turbidity on site, in real-time, for continuous
estimation of FSP concentrations during runoff events. And finally, if necessary,
stormwater sample turbidity data could provide a consistent metric for mapping between
alternative particle size analysis methods and for making corresponding adjustments to
the data.
Another potential surrogate for FSP number concentration is the mass of particles
less than 20 µm. Stormwater samples are easily screened through a U.S. Standard #635
sieve after collection, and the mass of particles in the filtrate can be determined
gravimetrically and reported as the fractional mass of suspended particulates (e.g.,
TSS<20). The assumption, however, is that a characteristic particle size distribution can
be assigned to that sample for conversion of mass to total particle numbers. A
characteristic PSD for all Tahoe stormwater samples listed in Appendix E is shown
below in Figure 3.53. As discussed previously, however, the relationship between
particulate mass <20 µm and the FSP number concentration is not as strong as the
relationship between turbidity and FSP number concentrations. A superior alternative
would be to measure both turbidity and mass on the <20 µm filtrate, which essentially
defaults to the turbidity proxy for FSP, as described below.
Our recommendation for implementation of turbidity as a proxy indicator is to
develop site-specific calibration curves by analyzing particle size distribution on a
percentage of the total samples collected. Ultimately, these results will either verify that
site data lie within the prediction interval shown in Figure 3.52, or they will contribute
toward establishing a reliable, independent function that estimates FSP concentration
from the turbidity measurements on samples collected at that particular site. Assembling
these data over time as a subset of total stormwater samples collected in the Tahoe Basin
will improve confidence in a broader application of this approach, and will help refine the
relationship between turbidity and FSP concentration as a function of sample, event, and
site characteristics.
70
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.53
Median PSD profile and interquartile range for the long-term set of Tahoe
stormwater samples from multiple sites shown in Appendix E (n=773).
While sampling methods for the collection of stormwater samples can vary, it is
important that all sample results from LPSA are also reported with the sample equivalent
(fractional) analyses of turbidity (USEPA 180.1 or SM 2130) and total suspended solids
(USEPA 160.2 or SM 2540D). Not all samples will be submitted for particle size
analysis, but turbidity should be accurately measured on each sample that is submitted for
typical water quality analyses (e.g., nutrients and TSS). The objective is to submit a wide
range of sample types from each site for measurement of FSP concentration. Toward this
goal turbidity can serve as a simple screening tool in the selection of which individual
samples to submit.
Initially, twenty to thirty percent, or more, of samples from a new monitoring site
are likely to be submitted for the analysis of particle size distribution. Once a preliminary
regression has been established for that site it, can be compared to the overall fit for
Tahoe Basin stormwater data, presumably maintained by the Tahoe Regional Stormwater
Monitoring Program (RSWMP). If the site regression lies within an existing prediction
interval maintained by RSWMP, then only a smaller percentage of samples (5–10%)
71
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
thereafter would need to be submitted on a regular basis for continued assessment of fit
and detection of drift or change in the relationship.
Stormwater particle size distribution data should always be reported in a logbased series of cumulative percent finer (less than) size fraction classes, preferably on the
half-phi scale (Appendix A), as described below. See Appendix E for an example of
stormwater particle size data reporting. Derivative calculations can be included, but they
are secondary to the primary output data. A determination of stormwater FSP
concentration is based on the following formula when LPSA output is reported in terms
of particle concentration on a phi scale.
FSPconc = ∑ Φconc (summing from φ=6 through φ=11)
where Φconc = phi interval concentration, reported as the concentration of particles
per unit volume (#/mL) between successive phi (φ) grain-size units (the
series can also be in half-phi units or finer);
phi (φ) is the logarithmic unit of grain size, such that
φ = −log2 [d(mm) / 1.0 (mm)]; and
d(mm) = spherical equivalent particle diameter, in millimeters.
Use the following equation to calculate phi interval concentrations when LPSA
output is reported in volume percent fractions for each size category.
Φconc = Pvol • SPconc • 6/π * d-3 • ρ-1 • CF
where Pvol = particle volume percentage (of total) within designated phi interval;
SPconc = suspended particulate concentration (mg/L) measured in the sample
(usually reported as TSS, or a fraction thereof);
ρ = mean particle density within designated phi interval (g/cm3);
d = representative phi interval particle diameter (µm);
CF = conversion factor (104 when using the units indicated above).
Alternatively, the above equation simplifies to the following when LPSA output is
reported in volume concentration fractions for each size category.
Φconc = Pvol • 6/π • d-3 • CF
where Pvol = particle volume concentration (µL/L) within designated phi interval;
CF = conversion factor (109 when using the units shown above).
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Note that the technology and techniques available for particle size analysis will
continue to evolve and improve. Therefore, it is anticipated that further guidance on
stormwater particle size analysis and reporting will be developed and disseminated
periodically through the Tahoe Regional Stormwater Monitoring Program (RSWMP). In
the meantime, both turbidity and TSS should be accurately measured on all stormwater
samples, which are normally done in any case. In addition, as described above, a subset
of selected samples should be prescreened at 63 µm and then measured for PSD by laser
particle size analysis along with measurements of TSS and turbidity on the corresponding
prescreened fractions (reported as <63 µm TSS and turbidity fractions, see Appendix B).
If desired, although not necessary, additional prescreened aliquots can be filtered through
a U.S. Standard #635 sieve for measurement of the <20 µm TSS and turbidity fractions.
3.6.3
Analysis of Tahoe Soil Samples for Water Quality Projects
Particle size distribution is routinely determined and reported in studies of soil
characteristics. Indeed, many of the techniques for PSD analysis derived directly from
applications developed in soil science. This is relevant to water quality studies at Tahoe
because we expect to see linkages between soil conditions and resulting runoff water
quality characteristics. Classical particle size methods in soil science use sieving to
remove the coarse material (>0.05 mm) and sedimentation to determine the finer
material. Pipette or hydrometer methods are used to differentiate the silt (0.05 to 0.002
mm) and clay (<0.002mm) size fractions. Both methods assume Stokes’ settling law and
spherical particles with no interaction during settling.
Soil texture and particle size distribution (PSD) can be determined by using a
combination of mechanical sieving and laser diffraction techniques (Gee and Or, 2002).
All samples are oven dried for 24 hr at 105 °C and then mechanically sieved to remove
gravel (>2 mm, No. 10 sieve), very coarse sand (2-1 mm, No. 18 sieve), and coarse sand
(1-0.5 mm, No. 35 sieve). The finer fraction (<0.5 mm) is then subsampled using a
spinning riffler and analyzed by laser diffraction. One advantage with this approach is
that LPSA results on soil samples can be linked to equivalent LPSA data from
stormwater runoff samples.
Laser particle size analysis is used to determine the percentage of size-class
fractions in a soil or sediment sample based on ASTM C 1070–01 for the determination
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
of PSD of alumina and quartz powders by laser light scattering (ASTM, 2000). Analysis
is based on the Mie theory of light scattering by spherical particles. Typically, the sample
is internally dispersed for 90 seconds using ultra-sonication in an aqueous medium of
0.005% dispersant (Na-hexametaphosphate) and circulated through the path of the laser
light beam.
Textural analysis corresponding to traditional categories in the soil sciences
consists of summing associated particle-size bins for percent clay (0-2 µm), percent silt
(2-50 µm), percent sand (50-2000 µm) and percent gravel (>2,000 µm). The geometric
mean particle diameter (MPD) and standard deviation (σ) are determined from the entire
PSD (Shirazi and Boersma, 1984):
(1)
(2)
where mi is the mass (or volume) fraction of bin size i, and di is the associated geometric
mean diameter of bin i. Both values are reported in micrometers (µm).
3.6.4
Internal Standards for Laboratory Quality Control
A reference material (RM) allows inferences on instrument performance to be
assessed. In the case of PSD, a reference material can aid in the determination of particle
contamination (material from past analysis retained within instrument tubing), cell
contamination (contaminated glass causing secondary refractions), and the presence air
bubbles. Most PSD reference materials are milled products, generally garnet, glass beads
or polymer microspheres, designed for very narrow particle size distributions. These tight
distributions are most useful to laser diffraction users in manufacturing and
pharmaceutical production. Although these RMs allow instrument performance to be
assessed and calibrated, it is often desired to have a more representative internal reference
sample (IRS) available. The Yolo silt-loam is an example of a well-studied material in
soil science. The Yolo series is a member of the fine silty, mixed, nonacid, thermic
family of Mollic Xerofluvents and found in a field adjacent to the University of
California, Davis. Yolo soils have thick grayish brown, neutral silt loam A horizons, and
brown to pale brown mildly alkaline silt loam C horizons (Soil Survey, 2004). The
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
material has been used in several historical papers on hydraulic measurements (Ahuja,
1974, Eching et al., 1994), thermal properties (Weirenga et al., 1969), mechanical
properties (Vomocil and Flocker, 1965), particle size (Tyler and Wheatcraft, 1992) and
even laser particle size analysis (Eshel et al., 2004).
The Yolo soil has been used as an IRS at DRI to assess instrument and operator
reliability on the DigiSizer (Table 3.4). The mean PSD (n=19) from those analyses is
overlain with more recent LS-13320 analyses from 2007-2009 (n =56) in Figure 3.54.
While there is slight discrepancy in the data beyond 30 μm, they are otherwise fairly
comparable. Further studies are in progress with new laboratory standards and additional
analytic instruments to help evaluate accurate particle concentrations and to refine the
correspondence of results between the LS-13320 and DigiSizer analyses, especially at
low particle concentrations.
Table 3.4.
N = 22
Average
St. Deviation
CI (95%)
PSD results and for the Yolo Silt loam on the Saturn DigiSizer.
Mean
37.2
6.8
2.8
Median
12.8
2.6
1.1
Cum. Particle Diameter
(µm) %finer
90%
50%
10%
112.6
12.8
1.2
21.1
2.7
0.1
9.0
1.1
0.0
SAND
Average
St. Deviation
CI (95%)
>1000 µm
0.0
0.0
NA
500 µm
0.0
0.0
NA
Particle Size Table
%Sand
%Silt
%Clay
19.2
57.0
23.8
4.1
2.2
2.5
1.7
0.9
1.0
SILT
250 µm
1.2
0.9
0.4
75
125 µm
7.1
2.2
0.9
62.5
µm
11.1
1.7
0.7
15 µm
27.1
1.4
0.6
CLAY
3 µm
29.8
2.2
0.9
<3 µm
23.8
2.5
1.0
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Figure 3.54.
4.
Mean cumulative distributions of the Yolo IRS from DigiSizer (DRI) and LS13320 (UCD) analyses.
ACKNOWLEDGEMENTS
This project was made possible by funding from the Southern Nevada Public Land
Management Act (SNPLMA) through a grant administered by the USDA Forest Service
Pacific Southwest Research Station. We would like to Hannah Schembri from the
Lahontan Water Quality Control Board in South Lake Tahoe and Jason Kuchnicki from
the Nevada Division of Environmental Protection in Carson City for their useful
comments on early drafts of this document. We also recognize and appreciate the efforts
of our field and laboratory technicians that have dedicated many long hours, often under
adverse weather conditions, to collect, process and analyze the samples that informed this
study. In particular we would like to acknowledge Collin Strasenburgh, Raph Townsend,
and Andrea Buxton at the UCD Tahoe Environmental Research Center, as well as Sophie
Baker and Sam Pincock at the Desert Research Center for their diligent contributions to
this project.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
5.
LITERATURE CITED
American Society for Testing and Materials (ASTM). 2000. Standard test method for
determining the particle size distribution of alumina quartz by laser light scattering. C
1070-86 (reapproved 1992). 2000 Annual Book of ASTM Standards. 15.02:375-376.
ASTM, Philadelphia, PA.
Arriaga, F.J., B. Lowery, and M.D. Mays. 2006. A fast method for determining soil
particle size distribution using a laser instrument. Soil Sci. 171:663-674.
Beuselinck, L., G. Govers, J. Poesen, and G. Degraer. 1998. Grain-size analysis by laser
diffractometry: Comparison with the sieve-pipette method. Catena 32:193-208.
Blott, S.J., and K. Pye. 2006. Particle size distribution analysis of sand-sized particles by
laser diffraction: An experimental investigation of instrument sensitivity and the
effects of particle shape. Sedimentology 53:671-685.
Buchan, G.D. 1989. Applicability of the simple lognormal model to particle-size
distribution in soils Soil Sci. 147:155-161.
Clifton, J., P. McDonald, A. Plater, and F. Oldfield. 1999. An investigation into the
efficiency of particle size separation using stokes' law. Earth Surf. Processes
Landforms 24:725-730.
Eshel, G., G.J. Levy, U. Mingelgrin, and M.J. Singer. 2004. Critical evaluation of the use
of laser diffraction for particle-size distribution analysis. Soil Sci. Soc. Am. J. 68:736743.
Federal Interagency Sedimentation Project (FISP). 2006. Collection and Use of Total
Suspended Solids (TSS) Data. Technical Committee Memorandum 2007.01. October
25, 2006.
Gee, G.W., and D. Or. 2002. Particle-size analysis, p. 255-293, In J. H. Dane and G. C.
Topp, eds. Methods of soil analysis, part 4. Physical methods, Vol. 5. Soil Science
Society of America Book Series, Madison.
Goossens, D. 2008. Techniques to measure grain-size distributions of loamy sediments:
A comparative study of ten instruments for wet analysis. Sedimentology 55:65-96.
Gray, J. R., G. D. Glysson, L. M. Turcios, and G. E. Schwarz. 2000. Comparability of
Suspended-Sediment Concentration and Total Suspended Solids Data, U.S.
Geological Survey Water-Resources Investigations Report 00-4191, 14 p.
Heyvaert, A., J. Thomas, T. Mihevc, A. Parra, R. Townsend, and C. Strasenburgh. 2009.
Recommended Operating Procedures for Stormwater Monitoring in the Lake Tahoe
Basin. Desert Research Institute and University of California, Davis. February 17,
2009.
Heyvaert, A., J. Reuter, and J. Thomas, and Schladow S.G. 2007. Particle size
distribution in stormwater runoff samples at Tahoe. Technical memo prepared for the
Lahontan Regional Water Quality Control Board. Desert Research Institute and
University of California, Davis. March 2, 2007.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Jassby, A. D., C. R. Goldman, J. E. Reuter, and R. C. Richards. 1999. Origins and scale
dependence of temporal variability in the transparency of Lake Tahoe, CaliforniaNevada. Limnol. Oceanogr. 44(2): 282–294.
Jonasz, M., and G. R. Fournier. 2007. Light Scattering by Particles in Water, Elsevier,
New York.
Kayhanian M., T.M. Young, and M. K. Stenstrom. 2005. Small Particles and the
Associated Constituents in Highway Runoff: Methodology and Preliminary Results.
Final draft report prepared for the California Department of Transportation, Report
No. CTSW-RT-06-73-23.1. Sacramento, California.
Krumbein, W. C. 1936. Application of Logarithmic Moments to Size Frequency
Distribution of Sediments. Journal of Sedimentary Petrology, Vol 6, No. 1, pp 35-47.
Lahontan Regional Water Quality Control Board (Lahontan). 2010. Proposed Water
Quality Control Plan Amendments, Total Maximum Daily Load for Sediment and
Nutrients in Lake Tahoe. November 16, 2010.
Lahontan Regional Water Quality Control Board (Lahontan) and Nevada Division of
Environmental Protection (NDEP). 2010. Lake Tahoe Total Maximum Daily Load
Technical Report. Lahontan Water Board, South Lake Tahoe, California, and Nevada
Division of Environmental Protection, Carson City, NV. 340 p.
Lane, E.W. 1947. Report of the subcommittee on sediment terminology. Transaction,
American Geophysical Union. 28(6): 936-938.
Li, Y., S.L. Lau, M. Kayhanian, and M.K. Stenstrom. 2006. First flush and natural
aggregation of particles in highway runoff. Water Science & Technology. 54(11): 2127.
Northwest Hydraulic Consultants (nhc), Geosyntec Consultants, and 2NDNATURE.
2009. PLRM Model Development Document. Prepared for the Lake Tahoe Basin
Storm Water Quality Improvement Committee. South Lake Tahoe, CA.
Pollutant Load Reduction Model (PLRM). 2009. User’s Manual. December 2009.
Rabidoux, A.A. 2005. Spatial and temporal distribution of fine particles and elemental
concentrations in suspended sediments in Lake Tahoe streams. Department of Civil
and Environmental Engineering, University of California, Davis. M.S.
Sahoo, G.B., S.G. Schladow, and J.E. Reuter. 2010. Effect of sediment and nutrient
loading on Lake Tahoe optical conditions and restoration opportunities using a newly
developed lake clarity model. Water Resources Research: 46 (W10505).
Sperazza, M., J.N. Moore, and M.S. Hendrix. 2004. High-resolution particle size analysis
of naturally occurring very fine-grained sediment through laser diffractometry.
Journal of Sedimentary Research 74:736-743.
Standard Methods For The Examination Of Water and Wastewater, 20th Edition. 2005.
Editors Arnold E. Greenberg, Lenore S. Clesceri, Andrew D. Eaton, Mary Ann H.
Franson. American Public Health Association, 1015 Fifteenth Street NW,
Washington, DC 20005.
78
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
Sunman, B. 2004. Spatial and temporal distribution of particle concentration and
composition in Lake Tahoe, California-Nevada. Department of Civil and
Environmental Engineering, University of California, Davis. M.S. Thesis.
Swift, T.J., J. Perez-Losada, S.G. Schladow, J.E. Reuter, A.D. Jassby, and C.R. Goldman.
2006. Water clarity modeling in Lake Tahoe: Linking suspended matter
characteristics to Secchi depth. Aquatic Sciences 68(1): 1-15.
Zobeck, T.M. 2004. Rapid soil particle size analyses using laser diffraction. Applied
Engineering in Agriculture 20:633-639.
79
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX A. Particle Size Classification System for Sedimentology, expressed in phi
units (Krumbein, 1936) as recommended by the American Geophysical Union (Lane
1947).
Phi
12
11.5
11
10.5
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
-4
-4.5
-5
-5.5
-6
Diameter
(µm)
0.24
-0.5
-1
-2
-4
-8
-16
-31
-63
-125
-250
-500
-1000
-2000
-4000
-8000
-16,000
-32,000
-64,000
U.S.
Standard
Sieve
----------------No. 230
-No. 120
-No. 60
-No. 35
-No. 18
-No. 10
-No. 5
-5/16"
-5/8"
-1-1/4"
-2-1/2"
AGU Classification
Colloids
-Very Fine Clay
-Fine Clay
-Medium Clay
-Coarse Clay
-Very Fine Silt
-Fine Silt
-Medium Silt
-Coarse Silt
-Very Fine Sand
-Fine Sand
-Medium Sand
-Coarse Sand
-Very Coarse Sand
-Very Fine Gravel
-Fine Gravel
-Medium Gravel
-Coarse Gravel
-Very Coarse Gravel
80
Size Range (µm)
<0.24
-0.24–0.50
-0.5–1.0
-1–2
-2–4
-4–8
-8–16
-16–31
-31–63
-63–125
-125–250
-250–500
-500–1000
-1000–2000
-2000–4000
-4000–8000
-8000–16,000
-16,000–32,000
-32,000–64,000
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX B. Laser Particle Size Analysis for Determining Particle Size Distribution
and Fine Particle Concentrations in Tahoe Stormwater Samples.
Version 2.b, December 2010
Particle size distribution (PSD) and the number of particles <16 µm in diameter
exert an important influence on the transparency of Lake Tahoe. Therefore, consistent
measurement of these fine particles in runoff will be important at Tahoe for making
design decisions on water quality projects, for treatment efficiency evaluations, and for
tracking TMDL progress. Advances in the technology of laser particle size analysis
(LPSA) have led to its increasing use over traditional methods of PSD assessment in both
soil science and water quality management. The LPSA approach has direct relevance for
Tahoe samples, given the importance of fine particles to Lake Tahoe’s clarity and the
observation that specific sizes of particles within the <16 µm fraction have varying
effects on light transmission in water. LPSA provides PSD data at fine resolution, in
more size classes than typically achieved by other methods. Thus LPSA has been used at
Tahoe to analyze lake samples since 1999, to analyze stream samples since 2002, and to
analyze urban runoff samples since 2003.
The following is intended as guidance in the use of LPSA for assessing PSD in
Tahoe stormwater samples and for reporting fine sediment particle (FSP) concentrations.
Procedures are described based on the assumption they will be performed by technicians
or analysts who are familiar with the basic principles of stormwater monitoring and
analysis and trained in the use of their respective LPSA instrumentation. The methods
presented for LPSA analysis of Tahoe stormwater have drawn upon several available
references, including documents from ASTM International, the International Standards
Organization (ISO), and Standard Methods for the Examination of Water and Waste
Water (SM). See Section 10 for these and any additional references cited in this work.
The mention of trade names or commercial products in this guidance is for
illustrative purposes only. It does not constitute an endorsement or exclusive
recommendation for use. The products and instrument settings cited herein represent
specifications used during method development and evaluation for Assessment of Particle
Size Analysis project in the Lake Tahoe Basin.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
1.
Summary of Method
An aliquot of well-mixed stormwater is introduced to the LPSA instrument
through a receiving module. As necessary the sample is diluted with particle-free water to
an optimal concentration and cycled through an optical cell for laser illumination and
photovoltaic detection of the light scattering by particles in solution. Analysis of
scattering intensity as a function of observation angle yields a particle size distribution
for the aqueous suspension as large particles scatter strongly at smaller angles away from
the incident light beam and small particles scatter weakly at larger angles. Detector data
is processed based on the principles of Fraunhofer diffraction and Mie scattering that
mathematically deconvolute a resulting signal by inversion matrix algorithms built into
the software. Particle sizes determined by these instruments are reported in terms of
equivalent spherical diameters.
2.
Application Notes
2.1
This method provides procedures for the determination of particle size
distribution in urban stormwater runoff samples from the Lake Tahoe Basin. It is also
used for estimation of particle numbers in the corresponding size fractions determined by
laser particle size analysis. These methods are subject to revision as improved techniques
are identified and published under subsequent versions of this document.
2.2
The results obtained by this method or any other method for particle size
distribution are strongly influenced by the physical principles applied and different
assumptions relevant to application of the underlying theory. The use of this method
cannot guarantee directly comparable results between different types of instruments.
2.2
The analysis of PSD by this method requires sufficient obscuration by
particles within the laser beam path for stable readings of diffraction patterns by the
LPSA instrumentation.
2.3
Estimation of particle number by this method requires a corresponding
measurement of particle mass associated with the sample, unless the LPSA
instrumentation provides output on a particle volume per solution volume basis (e.g.,
µL/mL) or in terms of absolute counts.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
2.4
Particulates in stormwater samples are naturally subject to varying degrees
of aggregation and flocculation (see Section 10.1). As necessary, these samples may be
disaggregated prior to PSD analysis with a low-power sonication interval adjusted to the
instrument for characteristic sample types.
2.5
Dispersants can induce air bubbles during analysis with potential effects
on apparent particle size distribution. They have not been shown to improve analytic
results for Tahoe stormwater samples, but can generally be used at low concentrations if
desired.
2.6
Particle suspension bias in the larger size classes may affect results, unless
prescreening is conducted to remove these particles prior to analysis.
3.
Interferences and Limitations
3.1
Contamination of the sample or carrier fluid with particles, air bubbles,
and electronic noise can interfere with analysis and affect results.
3.2
Physical interferences are associated with processes that transport sample
into the detection cell, which may occur when heavier or denser particles are segregated
due to insufficient flow velocity or if larger particles interfere with transport.
3.3
Prescreening may be necessary to ensure that particles are suited to the
inherent size limitations of a particular instrument.
3.4
High levels of dissolved solids, or biogenic and synthetic surfactants in the
sample may create bubbles that affect readings.
3.5
LPSA instrumentation can be sensitive to external conditions if the optical
cell or detectors are not completely isolated from ambient light.
4.
Equipment, Supplies, and Reagents
4.1
Instrument capable of laser scanning throughout the spherical equivalent
particle size range of interest. For samples of urban stormwater runoff this is typically
through the clay and silt size fractions shown in Appendix A (from 0.25 through 63 µm).
Analysis of the sand size classes (from 63 through 2000 µm) may also be useful in some
cases.
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
4.2
Liquid handling system that consists of separate aqueous sample
module(s) and associated pumps directly connected to the LPSA instrument, or built in as
integral components of the instrumentation.
4.3
Sonicator bath or probe, if not available as part of the LPSA
instrumentation package.
4.4
Nanopure particle-free dilution water; typically produced from deionized
(DI) or reverse osmosis (RO) laboratory water by a continuous closed-loop membrane
filtration system that removes particles greater than 0.2 microns.
4.5
Stainless steel ASTM test sieves with U.S. Standard No. 10 (2000 µm)
and U.S. Standard No. 230 (63 µm) designations. Alternative mesh sizes can be used if
specified in the documentation of results.
4.6
Funnel of sufficient top diameter to accommodate the test sieves.
4.7
A glass beaker for sample transfer and mixing.
4.8
(Optional) Stir plate and magnetic stir bar for mixing stormwater samples.
4.9
(Optional) Calibrated pipette for subsampling mixed stormwater samples.
4.10
(Optional) Dispersant solution of sodium hexametaphosphate [(NaPO3)6
with mol. wt. 611.77] in Nanopure particle-free deionized water. The amount used for
analysis will vary depending upon sample characteristics, sample volume, and analysis
dilution. Generally, the concentration of sodium hexametaphosphate in stock solution
added to the liquid handling system will range from 0.05 to 1.5 g/L (0.005–0.15% w/v).
Use a concentration that does not create bubbles within the aqueous solution during
analysis. If used, the optimum final dispersant concentration will produce the finest
particle size distribution results. Estimated final concentration of the dispersant should be
reported with results.
4.11
Laboratory turbidimeter with capability to measure nephelometric
turbidity units (NTU) by USEPA Method 180.1 or SM 2540D over the range of interest.
The typical range for stormwater samples collected at Tahoe is from 14 to 792 NTU,
representing the 5th and 95th percentiles, respectively, from data shown in Appendix E.
5.
Calibration and Standardization
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Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
5.1
Laser diffraction systems are based on first principles that assume
idealized particle properties. Thus, calibration by the user is not required. However, it is
important to periodically confirm correct operation of the instrument with respect to both
precision and accuracy by measuring a reference material of known size distribution.
5.2
Assessing instrument accuracy requires the use of certified reference
materials (CRMs) declared suitable for laser diffraction technique and consisting of
spherical particles with a known distribution, uniform density, and consistent optical
properties. They should be certified to percentage mass fraction or percentage volume
fraction by an absolute and traceable technique. The real and imaginary parts of the
complex refractive index should be specified for the material if the Mie theory is to be
applied in data analysis. These materials are generally available from the instrument
manufacturer.
5.3
Instrument qualification should follow the protocols given for a particular
reference material as regarding any sub-sampling, sample dispersion, and laser diffraction
measurement parameters and conditions. Record the date and results from each
qualification test.
5.4
Perform at least three consecutive measurements with the same dispersed
test portion or dispersed single shot samples at an adequate sample concentration and
signal integration period to allow a sufficient number of particles to be analyzed. Output
the distribution mean, median, standard deviation, d10 and d90 from the CRM test.
Report all details of the operation and its results properly. Print chart and data files for
laboratory logbook (see example in Figure 1).
5.5
An instrument is considered to qualify if the coefficient of variation (CV)
at the median (d50) does not exceed 3% of specification and the CV at the sides of the
distribution (d10 and d90) does not exceed 5%. Below 10 µm, these maximum values
should be doubled. For well-functioning instruments, well-trained operators, wellbehaved samples and good procedures, a better precision can be met.
5.6
Once the instrument performance has been compared to traceable CRMs
and accuracy has been demonstrated to lie within acceptable limits, a more frequent
instrument evaluation can be conducted with secondary reference materials. No absolute
standards are available for aqueous environmental particle size analysis; therefore a
85
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
secondary reference material can be developed to assist in evaluating and optimizing
operation of the instrument. Ideally, the PSD of a secondary reference material shall
consist of documented values coming from laser diffraction analyses in one or more
instrument types according to an agreed, detailed operational procedure that has been
shown to yield adequate and stable results over time. A significant bias may result if the
reference values come from methods other than laser diffraction.
6.
Sample Collection, Processing, Preservation, and Storage
6.1
Tahoe stormwater samples for PSD analysis can be collected by various
means, including grab samples, passive samplers, and automated sampling devices. In the
case of passive and automated samplers, the device should hold collected samples in the
dark at ambient water temperature or lower, without freezing, until recovery.
6.2
It is important that samples for fine sediment analysis are representative of
the runoff flow sampled, with minimal bias due to sampling location in the flow path or
technique. Preferably, grab samples will comprise a complete instantaneous cross-section
of the flow, and sample splitting can be accomplished with a churn splitter. Autosampler
pumps must perform to specification within the hydraulic head and distance limits
established for that equipment (usually less than 20 feet).
6.3
Samples should be recovered from the field as soon as possible, but within
a maximum of 24 hours. Samples are transported in their original containers, capped, and
placed within insulated coolers at 4°C in the dark.
6.4
Samples for PSD are not preserved, so should be stored in the dark at 4°C
until analysis, which should occur as soon as possible but not longer than 7 days after
sample collection (assuming a calibrated low sonication power is applied in the PSD
analysis).
6.5
Sample splitting and compositing can introduce bias when coarse particles
are not adequately represented in the aliquot. For this reason it is recommended that
Tahoe stormwater samples collected for the analysis of fine particle size distribution are
prescreened through clean ASTM certified sieves at 2000 µm and then at 63 µm. The
sieve fraction retained on the 63 µm sieve should be quantitatively recovered, dried at
105°C, and reported as dry mass of sand size particles. If desired, the organic content of
86
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
this faction can be determined by loss-on-ignition. The >2000 µm fraction can be
discarded.
6.6
An aliquot of the <63 µm stormwater fraction is split for analysis of total
suspended solids (SM 2540D or USEPA Method 160.2) and fixed suspended solids (SM
2540E or USEPA Method 160.4), which are reported for Tahoe stormwater samples as
fractional TSS (TSS<63) and fractional loss-on-ignition (LOI<63), respectively. Splitting
of the <63 µm aliquots is accomplished by shake and pour, as described for USEPA
Method 160.2, or by pipetting of a mixed sample, as described for SM 2540D.
6.7
(Optional) The TSS<63 filtrate can be filtered through a tared membrane
filter (0.2 or 0.45 µm pore size) for gravimetric analysis after drying to constant weight at
55°C, and reported as SS<1.5. Note that low particle concentrations may lead to poor
precision in this step. Since the mass is usually less than a few percent of total TSS, its
measurement and reporting is optional.
6.8
An additional aliquot of the <63 µm stormwater fraction is split for
turbidity measurement on a calibrated laboratory turbidimeter using certified methods
(USEPA Method 180.1 or SM 2130). The results for fractional turbidity (Turbidity<63)
are reported in nephelometric turbidity units (NTU).
6.9
(Optional) Turbidity can also be measured on the filtrate fraction(s) and
reported accordingly (e.g., Turbidity<1.5).
7.
LPSA Procedure
7.1
Follow the instrument instruction manual in preparation for analysis. The
appropriate lens system and cell assembly shall be installed and correctly focused. The
instrument should be clean and purged of any flow-path contamination, using particlefree carrier water during setup and between sample analyses.
7.2
Light sources like the He-Ne laser used in most LPSA instruments require
warm-up prior to use, so allow sufficient time for the instrument to stabilize as
recommended by the instrument manufacturer (usually about 30 min).
7.3
A well-trained operator shall prepare the instrument and periodically
verify the unit passes instrument qualification tests specified by the manufacturer, or
equivalent, with the date and result of the test recorded along with testing specifications.
87
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
7.4
Specify an optical model and corresponding parameters according to the
instrument instruction manual. The index of refraction for an aqueous stormwater
medium (water) should be 1.33. When using Mie theory the real and imaginary
components of refractive index must be specified for the material in suspension. Each of
these should be recorded with results from the sample run.
7.5
The analysis mode should be tuned to sample and instrument
characteristics. Select an appropriate run time, pumping speed (flow rate) for the sample
type. The measurement time (or the number of detector readings that are averaged for a
measurement) should be sufficient to ensure that adequate representation of all particle
sizes is reached and that precision across the particle size distribution is acceptable. This
procedure is instrument and application specific. Therefore, run time parameters should
be established by a trained operator in relation to desired precision for the characteristic
sample type.
7.6
Perform a blank measurement immediately prior to sample measurement.
Use particle-free dispersion water under the same instrument conditions as applied for
sample measurement. The resulting background signals are used to check proper
functioning of the instrument, and are subsequently subtracted from the detector signals
produced by sample measurement. Background values should not exceed the
manufacturer recommendations.
7.7
Begin with particle free water in the sampling chamber and flow
pathways. If desired, it may contain or consist of hexametaphosphate solution as
dispersant. Add a representative aliquot of the test sample. The amount of aliquot to use
depends upon instrument characteristics, particle concentration, the median particle size,
and its distribution. Add additional sample as necessary to obtain optimum light
scattering conditions. Particle concentration in the measurement zone should be high
enough to produce an adequate signal with acceptable signal-to-noise ratio, yet low
enough to ensure that multiple scattering is insignificant to the particle size result. The
effect of multiple scattering at high concentrations generally increases the angle of
scattering and shifts the size distribution downward. An exact concentration range cannot
be given, as it is a function of particle size, PSD width, laser beam width, and the path
length of dispersed particles in the measurement zone. Follow manufacturer
recommendations for optimal beam obscuration, or assess appropriate obscuration limits
88
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
for a specific sample type by performing particle measurements at different concentration
levels and identifying disparate shifts in distribution (see Section 10.2). Record the final
obscuration or transmission value achieved, if available.
7.8
Particle dispersion conditions should lead to complete deagglomeration
without particle disintegration. The purpose is to provide consistency in results and to
reproduce original particle size distributions despite different holding times and sample
conditions. Some instruments have built-in sonicators or modules, which may or may not
automatically adjust the sonication power based on sample concentration. Alternatively,
dispersion can be conducted externally using ultrasonic baths or probes. In either case, it
will be necessary to assess the amount of sonication needed for a particular instrument
and characteristic sample type (see Section 10.3). It should be sufficient to dissociate
agglomerates formed after sampling but without excess particle disintegration, thereby
yielding reproducible PSD results within the range of acceptable holding times.
7.9
After completing analysis on the sample, drain and rinse the system a
sufficient number of times with particle-free water to restore background values in
preparation for the next sample.
7.10
The result presentation software shall preferably be set to produce output
in the form of a cumulative finer (less than) distribution in accordance to the phi series
(Krumbein, 1936; Lane, 1947).
8.
Data Analysis and Calculations
8.1
No additional data analyses are typically required for reporting the PSD
results from LPSA on stormwater samples.
8.2
Data presentation should include cumulative finer distributions on half phi
intervals reported at the upper limit of each size class (see Appendix A).
8.3
If reporting data as percent particle volume or concentration within each
size class, it is imperative that a logarithmic sequence is represented (e.g. phi-series
intervals).
8.4
When estimates of particle counts are desired from percent particle
volume data, they can be determined by using the formula below. This requires a measure
89
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
of the corresponding suspended sediment concentration in the sample, assuming spherical
particles with a common density of 2.65 g/cm3.
Φconc = Pvol • SPconc • 6/π * d-3 • ρ-1 • CF
where:
Φconc = phi interval concentration, reported as the concentration of
particles per unit volume (#/mL) between successive phi (φ)
grain-size units (the series can also be in half-phi units or
finer);
Pvol = particle volume percentage (of total) within designated phi
interval;
SPconc = suspended particulate concentration (mg/L) measured in the
sample (usually reported as TSS, or a fraction thereof);
ρ = mean particle density within designated phi interval (g/cm3);
d = representative phi interval particle diameter (µm);
CF = conversion factor (104 when using the units indicated above).
8.5
Alternatively, estimates of particle counts can be determined by the
following formula if LPSA instrumentation provides output on a particle volume per
solution volume basis (e.g., µL/mL). This assumes spherical particles throughout the
distribution.
Φconc = Pvol • 6/π • d-3 • CF
where:
Φconc = phi interval concentration, reported as the concentration of
particles per unit volume (#/mL) between successive phi (φ)
grain-size units (the series can also be in half-phi units or
finer);
Pvol = particle volume concentration (µL/L) within designated phi
interval;
CF = conversion factor (109 when using the units shown above).
8.6
In some cases it may be practical to estimate total fine sediment particle
concentration based on a previously calibrated relationship between turbidity and particle
concentration. See the preceding report (Heyvaert et al., 2010) for further discussion of
this approach and its application to Tahoe stormwater.
90
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
9.
Reporting Results
Results should always be reported in terms of output produced by the particular
instrument. Secondary calculations and data transformations may be reported as well, in
which case any assumptions or parameters used for calculation and estimation must also
be reported (see Section 8). Ideally, laboratory reporting of results should contain the
following information.
9.1
Sample:
a) complete sample identification, including sample ID, site, location,
date and time of sampling, etc;
b) sample composite type (e.g. single, EMC, average);
c) sample pre-treatment (optional, e.g. pre-sieving at 2000 µm);
d) amount of sample used for analysis (optional);
e) date of analysis.
9.2
Dispersion:
a) dispersant (if used, type, volume added, estimate of final
concentration);
b) sonication (type of unit, power setting (frequency or energy), duration
and pause before starting measurement);
c) pump speed (if available);
d) optical path length.
9.3
Laser diffraction measurement:
a) instrument type and number;
b) software version;
c) volume of liquid handling unit;
d) optical arrangement applied (e.g. focal length of lens);
e) date and time of last alignment;
f) date of last qualification test;
g) date and time of measurement;
h) optical concentration/obscuration;
i) type of light-scattering model applied;
j) real and imaginary part of complex refractive index, if Mie theory is
applied;
91
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
k) real part of the refractive index for aqueous medium of the sample;
l) weighted residual.
9.4
Analyst identification:
a) name and address of laboratory;
b) operator's name or initials.
10.
Supplementary Materials
10.1
Generally, the effect of holding time on particle size distribution in
stormwater samples is a shift toward larger particles, with increasing relative proportion
of coarse particle fractions and commensurate decreasing frequency of finer particles
over time. The figure below shows a typical pattern with increasing holding time, in
which no sonication or dispersants were used.
Figure 10.1. Effect of holding time on a typical Tahoe stormwater sample. Each curve is
the mean of five replicate sample splits held for the time indicated at 4°C in
the dark and analyzed without dispersant or sonication. All fifteen replicates
were split from one parent sample at the same time.
10.2
Dilution of stormwater samples with high particle concentrations may be
necessary to achieve optimal laser beam obscuration in the measurement zone. On the
other hand, particle concentrations in some samples may be so low as to not produce an
92
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
adequate signal signal-to-noise ratio. The obscuration limits can usually be assessed by
performing particle size distribution measurements at different sample concentration levels
and identifying disparate shifts in their distribution, as demonstrated in Figure 10.2.
Figure 10.2. Effect of sample concentration on the frequency distribution of laser particle
size analysis for stormwater samples. Each curve represents the mean of six
replicate sample splits analyzed with increasing dilution to assess lower
obscuration limits. An obscuration of 15% is suitable for this instrument
with this type of sample, whereas an obscuration of only 1% would yield
disparate results.
10.3
Assessment of instrument-specific sonication conditions should
commence at the lowest sonication power setting (when available) and proceed through
the power setting series for a short fixed interval (usually between 30 to 90 seconds). A
dispersion curve is constructed from the results on split replicates taken from a larger
representative sample immediately after collection. The holding time should represent
typical conditions, and results are then compared to replicates from the original sample
that was analyzed immediately without holding (e.g., Figure 11.3). The power setting
which best restores original PSD conditions should be used. Ideally, a short period of
low-power sonication will not significantly change the original particle size distribution
when a sample is well dispersed and the constituent particles are neither fragile nor
93
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
soluble. When both time and power can be set by the operator, this determination may
need to be conducted iteratively, and should be repeated periodically to confirm
specification.
Figure 10.3. Example of sample dispersion curve to test sonication power. Dashed grey
line indicates median (d50) particle size in sample at time of collection,
before typical holding time (48 hr). In this case, the dispersion curve
indicates that a sonication setting of 3 to 4 appears to reproduce the original
median particle diameter. All points represent the average results from three
replicate split samples. Examining similar graphs of the d10 particle size and
other distribution characteristics also can be useful in making this
determination.
94
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
10.
References
American Society for Testing and Materials International (ASTM). 2007. Standard Test
Method for Determining Particle Size Distribution of Alumina or Quartz by Laser
Light Scattering. ASTM designation C1070-01 (reapproved 2007). Annual Book of
ASTM Standards, Philadelphia, PA.
International Organization for Standardization (ISO). 2009. Particle Size Analysis –Laser
Diffraction Methods. ISO reference number ISO 13320:2009(E). International
Standards, Geneva, Switzerland.
Krumbein, W. C. 1936. Application of Logarithmic Moments to Size Frequency
Distribution of Sediments. Journal of Sedimentary Petrology, Vol 6, No. 1, pp 35-47.
Lane, E.W. 1947. Report of the subcommittee on sediment terminology. Transaction,
American Geophysical Union (AGU). 28(6): 936-938.
Heyvaert, A.C., D.M. Nover, T.G. Caldwell, W.B. Trowbridge, S.G. Schladow, and J.E.
Reuter. 2011. Assessment of Particle Size Analysis in the Lake Tahoe Basin.
Prepared for the USDA Forest Service, Pacific Southwest Research Station, by the
Desert Research Institute and UCD Davis Tahoe Environmental Research Center.
March 2011.
Standard Methods For The Examination Of Water and Wastewater, 20th Edition (SM).
2005. Editors: Arnold E. Greenberg, Lenore S. Clesceri, Andrew D. Eaton, and Mary
Ann H. Franson. SM designation 2560D. American Public Health Association,
Washington, DC.
95
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
PSD Method with Beckman-Coulter LSTM 13 320 for Tahoe Stormwater
Samples
December 15, 2010 (subject to revision)
Standard procedures used for the analysis of stormwater samples with the
Beckman Coulter LSTM 13 320 are provided below. Instrumentation package consists of
the LS 13 320 unit with a 750-nm laser, a Universal Liquid Module (ULM), and an
integrated sonication module supplied by the manufacturer. Alternatively, the Aqueous
Liquid Module (ALM) can be used as the sample-handling unit, although stormwater
samples with low particle concentration may not provide adequate obscuration for precise
PSD readings.
1) Turn the instrument power on and allow to warm-up for at least 30 minutes.
2) Check the date of most recent instrument qualification test. If more than one
month has elapsed, conduct a new test with at least two CRMs equivalent to
the logged entries (currently using the Coulter LS Controls GB500 and G15).
Record results and verify that qualification passes CRM specifications. If not,
notify lab supervisor.
3) Use the instrument LS 13 320 Control Software to select or develop a Standard
Operating Method (SOM) for the desired stormwater sample analysis. The
following settings should be confirmed or entered as part of this SOM.

Set to rinse the module three times at the start of each run.

De-bubble at start of each run.

Set for laser alignment to repeat every 40 minutes.

Measure offsets at start of each run.

Measure background of DI water.

Set sample loading phase sonication to recommended power and time
settings (currently using 60 seconds a power setting of 4).
96
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011

Mix sample at a pump speed of 40% power (flow rate approximately 10
L/min).

Collect a minimum of three replicate detector readings of 60 seconds each.
4) Use the Control Software to develop a Preferences file that defines the optical
model, desired particle size output fractions, and reporting statistics. The
following settings should be confirmed or entered as part of this Preferences
file.

Select the Mie model and specify the real and imaginary components of
complex refractive index as 1.55 and 0.10, respectively.

Specify the refractive index for aqueous medium as 1.33 (water).

Turn the polarization intensity differential scattering (PIDS) function off.

Set half-phi size breaks for reporting the results in log2 size bin classes (see
Appendix A). Additional size breaks can be added if desired.

Automatically calculate the average, standard deviation, and residual for
results of each size bin.
5) Rinse sample handling unit and instrument flow paths three times with Nanopure
DI water, and then measure background PSD with carrier solution
representative of sample analysis. Include an equivalent amount of dispersant
if it is to be used in the sample analysis.
6) Open the SOM (from Step 3 above) and make sure the background DI readings
are no greater than 2.5 x 106. If so, cancel the run and start over.
7) Manually shake the stormwater sample and dispense into a clean 500 mL glass
beaker on a stir plate. Make sure that stir plate mixing does not introduce
bubbles to the sample. If so, slow the mixing speed.
8) Dispense sufficient aliquots of mixed stormwater sample with a clean 10 mL
pipette into the ULM during loading phase of run to reach a standard laser
obscuration of 8%-12%. The sonicator will be running during this phase and
97
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
should be on for 60 seconds, or until the obscuration has stabilized. Program
will display ‘OK’ when the correct obscuration has been met. Exceeding the
obscuration will result in unreliable results and it is recommended that the
run be cancelled and restarted with a new sample.
9) Click Start. Machine will run three replicates and calculate an average of the
results. Save the report file. Verify that conditions and results meet
acceptance criteria. Optionally, export the report file in a desired format (e.g.
Microsoft Excel file) and save as sample output spreadsheet file.
10) Output results should include the run ID, sample ID, particle mean and median
diameters, standard deviation, variance, d10, d90, kurtosis, log binned size
fractions as percent volume less than, and as percent volume represented
within each size bin. Laboratory data added to the spreadsheet should include
the lab ID, final obscuration, ultrasonication time, dispersant concentration,
final weighted residual, and additional information (e.g. listed in Section 10).
11) Complete all instrument logbook entries and charts with each LPSA sample
analysis. Note any irregularities with sample runs in the logbook, along with
sample ID, the date and time of analysis, and initials of the analyst.
12) Backup all data on laboratory server and transfer lab worksheets to appropriate
file cabinet. Make sure all worksheets are complete and in order.
98
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
PSD Method with Saturn DigiSizer 5200 for Tahoe Stormwater Samples
December 15, 2010 (subject to revision)
Standard procedures used for the analysis of stormwater samples with the
Micromeritics Saturn DigiSizer are provided below. The instrumentation package
consists of the DigiSizer 5200 and a Liquid Sample Handling Unit (LSHU) with an
integrated sonication probe.
1) Turn the instrument power on and allow to warm-up until temperature comes into
band (out of band temperature will be shown on the instrument schematic).
2) Check the date of most recent instrument qualification test. If more than one
month has elapsed, conduct a new test with at least two CRMs equivalent to
the logged entries. Record results and verify that qualification passes CRM
specifications. If not, notify lab supervisor.
3) Use the DigiSizer instrument software to build a sample file set the following
specifications.

Minimum of three replicate runs.

With internal auto-dilution.

Set for a laser obscuration of 35%.

Autosonicate at 90 seconds, followed by 90 seconds of recirculation.

Set pump speed of 11 L/min.
4) Rinse sample handling unit and instrument flow paths three times with particlefree DI water, and then measure background PSD with carrier solution
representative of sample analysis. Include an equivalent amount of dispersant
if it is to be used in the sample analysis.
5) Open the sample file and verify that background obscuration is between -0.3% to
0.3%. If not, rinse and repeat until background obscuration is within
tolerance.
6) Lightly shake the stormwater sample and dispense into 250 mL glass beaker.
99
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
7) Manually set pump speed to 200 rpm and drain sample reservoir to about 200 mL.
8) Pour contents of 250 mL beaker into sample chamber and rinse beaker with
particle-free DI. Do not overfill the chamber.
9) Reset pump speed to 11 L/min and proceed with analysis.
10) Manually ultra-sonicate sample until a stable obscuration is achieved, usually
within 30–60 seconds.
11) Begin analytic run. Machine will run three replicates and calculate an average of
the results. Save the report file. Verify that weighted residual is within range
(generally <1). The residual is dependent on beam obscuration, and will be
significantly higher if sample concentration (particle volume) is insufficient.
12) Rinse the sample handling unit and instrument flow paths two times with
dispersant solution in particle-free DI carrier water, and verify low
background PSD conditions prior to next sample analysis.
13) Transfer all results and sample information to appropriate spreadsheet setup for
the LPSA calculations in the lab computer. Ensure all numbers are entered
correctly. Output data should include the run ID, sample ID, particle mean
and median diameters, standard deviation, variance, d10, d90, kurtosis,
particle size fractions as percent volume less than upper bin limit, and percent
particle volume represented within each size bin. Laboratory data added to
the spreadsheet should include the lab ID, final obscuration, ultrasonication
time, dispersant concentration, final weighted residual, and additional
information (e.g. listed in Section 10).
14) Complete all instrument logbook entries and charts with each LPSA sample
analysis. Note any irregularities with sample runs in the logbook, along with
sample ID, the date and time of analysis, and initials of the analyst.
15) Backup all data and transfer lab worksheets to appropriate file cabinet. Make
sure all worksheets are complete and in order.
100
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP).
Stream
ID
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Sampling
Date
4/5/02
4/11/02
4/11/02
4/15/02
4/24/02
5/6/02
5/6/02
5/15/02
5/16/02
5/22/02
5/29/02
6/13/02
6/20/02
7/17/02
9/19/02
8/28/02
10/22/02
1/20/03
1/23/03
1/23/03
1/28/03
2/20/03
3/15/03
3/24/03
3/24/03
3/26/03
3/26/03
4/10/03
5/17/03
5/24/03
5/29/03
5/31/03
6/1/03
6/7/03
6/15/03
6/26/03
7/8/03
8/14/03
8/21/03
8/21/03
10/22/03
11/28/03
12/6/03
12/19/03
1/27/04
3/11/04
3/18/04
3/22/04
4/6/04
4/12/04
4/21/04
4/27/04
4/28/04
5/4/04
5/5/04
5/13/04
5/20/04
5/31/04
6/10/04
8/9/05
8/15/05
9/16/05
11/8/05
11/16/05
11/29/05
11/30/05
12/1/05
12/1/05
12/1/05
12/2/05
12/19/05
12/21/05
12/21/05
12/22/05
12/22/05
12/22/05
12/23/05
12/28/05
12/28/05
12/30/05
12/30/05
12/31/05
12/31/05
1/1/06
1/27/06
2/3/06
2/27/06
2/27/06
Flow
(cfs)
94.00
92.00
92.00
175.00
100.00
94.00
145.00
130.00
188.00
75.00
178.00
67.00
49.00
7.00
1.20
2.20
1.3
11.0
38.0
38.0
49.0
16.0
40.0
47.0
89.0
175.0
155.0
52.0
114.0
192.0
266.0
200.0
240.0
230.0
94.0
41.0
17.0
2.8
6.5
9.7
1.6
1.5
9.9
3.9
5.1
21.0
41.0
88.0
98.0
102.0
50.0
115.0
134.0
180.0
180.0
78.0
83.0
89.0
45.0
4.6
5.7
1.9
4.6
3.0
6.5
4.8
36.0
57.0
152.0
47.0
46.0
53.0
183.0
497.0
497.0
797.0
176.0
291.0
312.0
552.0
1120.0
1700.0
730.0
226.0
30.0
59.0
160.0
56.0
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
22604
13942
8528
6165
2357
827
590
189
127
100
84
158
122
69
13183
6793
3656
2450
825
249
204
63
45
32
29
59
33
24
12362
6864
3814
2667
973
312
241
75
46
39
37
56
45
25
30055
20329
12515
9799
4386
1793
1407
493
327
251
221
386
295
182
9674
5066
2764
2065
919
337
254
71
45
31
34
48
34
19
16949
10548
6578
5117
1993
647
412
107
51
36
33
46
39
13
54958
37799
24974
20517
9138
3587
2569
809
468
339
334
527
442
224
16804
13669
9297
7604
3216
1158
740
215
120
82
76
113
80
36
34565
27874
18761
15038
6634
2533
1896
642
417
323
282
496
415
236
7782
5419
3637
3105
1514
667
499
159
86
71
57
81
59
25
67226
60284
43358
37016
16975
6601
4525
1376
841
651
555
895
715
394
10307
6529
4130
3316
1374
532
398
134
74
57
48
65
48
20
4744
3110
1945
1613
821
362
283
91
51
34
31
45
32
14
15831
9822
5986
5012
2438
1013
734
230
134
97
77
111
81
34
10669
6388
3605
2618
1114
366
238
66
33
23
17
29
17
9
17237
9565
5208
3633
1496
525
329
83
43
31
27
34
19
8
3255
1710
975
822
448
205
151
43
28
20
17
24
16
6
7694
4128
2179
1567
668
265
215
60
37
27
20
33
25
9
32228
20845
13147
11066
5558
2504
2174
754
563
395
392
644
543
317
18514
11372
6898
5367
2366
912
721
225
146
106
94
161
122
63
9391
6245
4216
3829
1616
591
427
127
80
65
59
96
71
40
5936
2855
1494
1019
403
153
130
39
23
16
15
26
14
10
13843
7282
4129
3151
1488
642
578
212
131
102
88
134
95
48
15565
8658
5172
4070
1719
637
502
138
92
62
51
79
51
22
7516
3890
2100
1559
695
268
211
63
38
27
21
33
18
7
169083
110296
68952
61584
36163
18525
19213
7291
5163
4173
3859
6243
4397
1931
68401
40676
24659
20141
10177
4637
4219
1352
917
767
656
1113
800
353
13278
6512
3472
2441
936
340
260
73
50
30
29
39
27
13
11803
6770
4172
3709
1964
945
832
290
196
142
124
182
128
61
41519
24969
15083
12372
6685
3240
3229
1075
703
550
481
826
600
264
44771
25261
14815
11903
5789
2692
2475
833
576
475
387
634
434
199
31430
17875
10625
9122
5059
2557
2540
881
624
463
385
568
419
185
38197
21234
12887
10765
5642
2715
2545
938
636
489
428
640
517
246
40264
24533
15401
13667
7518
3575
3502
1247
774
607
509
805
555
251
19241
11386
6878
5500
2502
1020
805
231
133
104
85
107
77
37
11707
7574
4637
3766
1714
646
474
139
79
61
47
62
42
18
3742
2671
1775
1483
737
290
211
54
35
24
22
29
20
11
11273
5912
2926
1902
729
242
162
40
21
15
15
19
8
5
476760
344947
260507
280293
200760 114293 119533
44747
31373
24973
22533
38133
30907
16147
11697
6275
3880
3529
1983
948
805
259
166
152
132
232
160
83
19028
9307
4500
2817
970
329
203
58
31
24
17
22
14
7
17333
7802
3529
2032
657
211
153
34
21
15
12
15
7
4
91788
56420
35616
32744
20020
9593
8929
2925
1939
1423
1255
1812
1249
608
5420
3164
1726
1302
531
201
150
37
21
14
13
16
11
5
10061
5686
3072
2241
981
383
280
96
60
43
36
55
39
16
18550
10510
6055
4840
2203
921
750
241
151
95
82
123
79
34
39298
25313
16618
15607
9130
4600
4587
1829
1233
1095
903
1630
1214
651
42901
28333
18206
15921
8823
4039
3934
1426
1011
768
718
1127
898
379
11811
6970
4524
3843
2046
955
828
278
187
134
117
183
129
73
17228
9359
5466
4478
2331
1059
1053
366
229
184
169
281
203
120
10706
4942
2455
1619
665
274
207
69
48
36
31
38
27
7
27637
20720
16344
18942
14117
8213
8909
3544
2495
2167
1913
3341
2694
1396
12850
6961
4649
4338
2371
1123
1092
327
216
167
142
245
169
91
28582
16396
9881
8678
4680
2299
2053
755
529
367
339
499
367
179
43745
26921
16796
14765
8511
4211
4125
1533
1069
898
739
1253
985
479
18697
9907
5338
4037
1660
664
501
156
101
67
61
99
81
33
9537
5429
3389
2947
1458
591
434
139
85
59
59
76
47
21
9189
5837
3807
3635
1652
641
532
162
92
77
57
79
49
37
14020
6818
3615
2680
1255
519
448
137
97
73
53
97
67
34
5313
2013
997
800
378
145
92
35
17
13
10
22
10
3
65753
32888
17575
12368
4300
1192
647
143
95
75
62
80
50
8
18505
8580
4177
2737
1340
578
537
150
102
92
62
92
55
22
35997
14412
6650
4555
1765
650
497
142
50
73
43
57
38
22
72717
38613
20850
13825
5288
1978
1420
447
248
172
130
155
52
25
57373
31010
17228
13820
6335
2615
2215
875
570
435
495
822
603
337
33387
16280
8820
7020
3280
1307
1033
340
193
233
193
180
73
53
168553
93093
55740
48213
26660
14187
14893
5893
4133
3420
3000
4953
3380
1493
152147
75973
42920
33073
16887
8167
8293
3280
2153
1740
1347
2453
1580
713
199933
107447
60813
48080
24607
12607
12620
5107
3673
2860
2587
3760
2327
940
337073
207947
130660
111353
59213
29320
28947
10427
8053
6213
5293
8307
5047
1880
37307
18493
9920
7227
3447
1377
1100
413
260
203
183
227
157
57
70173
39620
24990
23243
14673
8377
9093
3710
2450
2160
1850
3137
2153
867
147177
97590
68360
70220
46493
26523
27440
10843
8050
6053
5487
8343
5667
2083
459400
345920
246667
246107
155720
86473
91613
35900
25287
20867
17507
28827
18940
7580
495060
405593
296300
292400
184867
97840
103840
40113
27480
22147
18580
31320
21040
8193
438313
339793
246673
245007
156653
84800
84887
31707
20827
16327
13907
19407
11800
3993
255680
151663
88803
73807
38957
18750
17440
5907
3670
2533
2070
2697
1320
430
198153
123610
76640
66477
35567
16897
14983
4880
3323
2407
1890
2510
1373
470
146252
110838
74693
65327
35332
16600
14873
4683
2832
1933
1518
1835
757
207
625267
458308
300550
259675
137517
64517
60225
20042
13325
10017
8683
11967
7408
3325
724050
843592
678875
670808
377792 182125 170517
58550
38992
29467
23408
33992
20358
7175
479492
950450 1001800 1133400 669075 306217 264133
83900
49925
36350
27933
36300
18042
5258
472675
993667 1062100 1190625 680467 299983 250667
75525
44242
31033
23358
30317
13825
3983
160127
151877
115267
105850
57237
24553
20332
6020
3410
2337
1712
2322
1055
402
12907
5500
2663
1940
760
263
270
60
47
33
30
63
20
7
34848
17698
10093
7242
2735
900
678
195
167
118
90
145
113
53
327353
194580
117120
106107
66853
36007
37920
13840
9547
7020
6147
8520
5113
1973
511787
356353
233613
212067
128613
65520
65253
23153
15427
11393
9827
13767
7780
2960
101
0.5 ‐ 16
55792
27620
27530
82258
21341
42556
156460
53173
109878
23138
241017
27009
13161
41567
25182
38229
7715
16917
90815
47004
26812
12123
31875
36797
16438
514941
178516
27488
31256
111331
111046
82549
97633
112957
48069
30947
11092
23263
1989760
30218
37319
31820
265713
12607
23033
44601
123056
128104
32005
42407
21117
131037
34651
75424
125552
41369
24250
25809
29879
9845
135228
37005
64928
155895
134397
72340
446120
350013
486420
947853
80313
205630
528247
1779227
2036580
1710100
663297
548710
477473
1977500
3852525
5057017
5168483
652097
24557
75023
936127
1654553
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Sampling
Date
2/28/06
3/24/06
4/3/06
4/4/06
4/27/06
5/5/06
5/8/06
5/12/06
5/12/06
5/20/06
5/18/06
5/23/06
5/23/06
5/23/06
5/23/06
5/23/06
5/25/06
5/26/06
6/2/06
6/7/06
6/15/06
6/21/06
6/30/06
7/13/06
8/14/06
9/18/06
10/20/06
11/3/06
11/14/06
11/13/06
11/13/06
12/14/06
1/22/07
2/9/07
2/9/07
2/10/07
2/20/07
2/20/07
3/13/07
3/13/07
3/13/07
3/13/07
3/26/07
4/3/07
4/25/07
5/1/07
5/9/07
5/10/07
5/17/07
5/23/07
5/31/07
6/13/07
7/13/07
4/28/08
5/6/08
5/9/08
5/14/08
5/26/08
5/16/08
5/18/08
5/21/08
5/21/08
5/30/08
6/9/08
7/7/08
8/20/08
10/3/08
10/4/08
9/25/08
10/23/08
11/1/08
11/2/08
12/3/08
1/7/09
1/22/09
1/23/09
1/24/09
2/10/09
2/23/09
2/24/09
3/2/09
3/2/09
3/13/09
4/1/09
4/17/09
4/20/09
4/24/09
5/1/09
5/1/09
5/2/09
Flow
(cfs)
185.0
28.0
42.0
1.6
2.1
228.0
247.0
276.0
242.0
271.0
445.0
168.0
168.0
173.0
175.0
173.0
176.0
181.0
195.0
251.0
104.0
185.0
109.0
28.0
4.2
1.3
3.0
4.4
19.0
140.0
8.1
31.0
6.2
15.0
15.0
33.0
18.0
18.0
22.0
22.0
22.0
22.0
50.0
47.0
47.0
133.0
137.0
87.0
88.0
53.0
55.0
23.0
4.4
110.0
124.0
126.0
132.0
70.0
236.0
249.0
124.0
124.0
65.0
52.0
8.4
2.3
1.6
2.4
1.4
1.8
4.0
5.3
2.5
2.2
4.2
5.4
6.0
4.2
24.0
23.0
38.0
38.0
9.9
38.0
40.0
114.0
127.0
188.0
188.0
277.0
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
610583
349250
206300
167467
84950
39483
35900
11650
7517
4617
4300
5567
2617
1033
12983
6572
3960
3365
1967
925
842
272
150
133
63
102
58
8
74973
38913
21107
16533
8613
3920
3253
1393
807
693
600
1027
780
307
68710
31777
15920
10170
4157
1707
1303
363
193
177
160
183
143
60
100693
57917
34957
31720
19880
10957
11527
4003
2703
2213
1847
2770
1707
833
210173
119293
65140
44580
16473
5580
3867
940
633
393
360
367
400
207
76080
39887
23653
22087
14247
7940
8380
2893
2067
1433
1233
1787
1107
473
128147
69827
38160
28720
12853
5213
4093
1287
793
547
360
607
313
107
112253
59240
32673
25780
13733
6653
6660
2240
1627
1207
887
1367
1020
347
223707
139127
85987
70133
35167
14447
12713
3907
2507
1633
1287
2093
1133
360
478840
362300
245667
221267
122047
58067
53400
17393
11300
8140
6580
9293
5407
1953
8580
4173
2253
1517
497
243
147
30
20
13
17
40
30
3
21930
11200
5853
4480
2017
773
733
190
100
103
80
123
87
23
12630
5913
3140
2237
980
370
327
120
100
50
40
63
43
13
13110
6653
3197
2010
727
317
250
90
53
37
23
37
30
13
69810
37010
20683
15423
6797
2920
2713
1017
533
500
447
630
413
207
34630
19537
11137
8207
3563
1237
867
247
140
97
73
57
47
13
39687
22447
13010
10333
5320
2330
1877
553
410
213
210
300
157
63
38207
18373
9307
6393
2773
1107
1100
393
160
280
160
253
167
53
119233
66480
38567
31547
16700
8153
7460
2340
1380
1040
793
1187
633
180
71827
41653
25820
21580
11320
4167
3273
820
507
467
407
387
213
73
65493
38140
23567
19533
10193
4827
3493
1047
660
420
273
473
240
73
27307
14757
8890
6997
3693
1673
1427
413
257
150
177
210
93
57
17253
8563
4547
3140
1400
493
387
117
80
60
33
40
7
3
22648
11142
6025
4560
1947
748
512
122
65
42
37
43
12
3
45888
23745
12687
8375
3092
1043
648
157
80
43
47
47
27
20
72383
32603
16800
12473
5453
2050
1423
260
170
103
90
123
53
23
29823
13233
6777
4893
2523
813
673
143
110
53
63
63
20
20
95507
45267
22760
17120
7373
3053
2640
1053
560
520
440
493
267
147
831867
486920
284507
244280
144907
80187
85213
32693
23507
17960
16907
27267
20080
9733
105000
49280
24947
18840
8213
3867
3107
1067
787
600
560
920
787
467
163900
84767
46027
31847
12987
4720
3433
960
547
493
387
447
307
167
15253
6900
3070
1963
747
260
190
73
40
43
23
37
13
17
16103
11401
8127
7085
2784
739
377
65
35
23
14
23
17
12
18242
10983
6323
4554
1916
665
408
78
39
30
25
33
21
7
13764
6837
3717
2921
1439
555
477
141
103
61
49
90
67
23
20937
9523
5137
3867
1893
707
640
153
93
83
53
87
57
30
23317
9903
5193
3553
1563
703
477
123
80
57
37
53
33
23
32310
18173
9790
7200
3397
1607
1503
537
343
173
200
270
157
37
3913
2710
2000
1200
357
97
53
7
7
13
13
0
10
3
27910
14560
7963
5687
2513
1057
863
183
147
110
103
120
97
30
20753
9900
5027
2893
1040
313
180
53
40
33
10
23
33
3
14931
8089
4619
3731
1749
796
673
211
133
92
67
119
61
32
28920
14153
7373
4430
2133
737
637
197
107
117
70
133
73
37
12379
6347
3254
2307
1106
478
513
169
123
99
69
133
89
48
26660
15824
9434
8036
4163
1776
1647
521
356
274
229
347
247
115
23835
13592
8044
6545
3328
1359
1270
434
279
216
193
289
230
100
12849
6994
4116
3217
1397
514
398
124
78
56
51
63
44
25
17591
9873
5524
4287
1990
813
765
241
165
141
105
163
102
39
3542
2397
1461
999
458
220
157
42
27
20
17
23
16
8
4396
2982
1612
976
385
156
140
47
30
25
20
30
20
10
7903
4313
1970
1110
380
139
120
39
26
18
17
21
16
6
2551
1060
503
335
139
48
33
9
4
4
3
3
2
1
3023
1127
473
297
115
36
22
6
4
3
2
3
2
1
4232
1822
800
500
169
41
23
6
3
3
2
2
2
1
7135
2862
1181
698
262
78
57
14
8
6
3
5
2
1
2677
1013
483
347
137
36
26
8
5
4
4
6
6
4
8478
3900
1768
1203
560
247
226
78
62
51
44
69
53
22
3505
1818
964
751
387
171
165
57
42
31
25
38
24
11
2690
966
428
297
115
37
25
6
4
3
3
3
2
1
3072
1143
488
319
133
46
36
9
6
4
3
4
3
1
11238
5737
3402
3334
2459
1306
1488
469
332
262
184
232
102
30
3196
1190
512
319
138
55
43
13
9
7
6
9
5
2
4179
2168
1038
743
371
165
163
57
38
29
23
30
13
4
2021
715
323
228
108
47
43
13
9
6
5
8
7
3
2979
1643
903
638
277
105
80
23
16
13
12
18
16
8
31401
16997
10918
11466
8363
4676
4988
1620
1125
767
544
625
247
58
5762
3923
2579
2585
1563
783
802
257
163
113
80
88
32
7
12978
7891
4984
4799
3212
1716
1887
654
428
315
212
246
101
22
87154
54873
39537
42392
29439
14730
13966
4225
2633
1878
1349
1570
590
118
11723
5967
3523
3391
2169
1050
1040
294
168
116
83
79
26
6
18039
11239
6770
5640
3177
1447
1236
440
335
253
227
372
240
105
27237
16134
8766
6179
2488
734
422
134
92
68
50
65
35
15
125626
82226
51564
47460
30104
15793
14925
5604
4361
3874
3241
5153
3749
1606
147789
104162
67735
63510
41143
21020
19405
7149
5527
4743
3810
5823
3757
1500
62126
42280
27371
24590
14631
7388
6295
2250
1651
1401
1043
1535
922
380
59658
39577
25536
23369
14153
7267
6508
2334
1710
1418
1108
1676
1001
392
6119
3878
2157
1503
652
240
181
61
41
31
28
36
25
13
6930
4083
2334
1790
885
348
277
93
69
51
42
62
37
20
25156
14003
7450
4985
2059
734
503
163
116
89
67
94
71
25
15362
8382
4232
2756
1048
329
229
62
46
27
21
35
18
5
29404
14901
7429
5077
1786
523
327
96
52
46
51
60
59
27
22068
10783
4921
2990
1023
313
182
55
37
31
24
35
29
17
7259
4619
2859
2221
973
326
222
63
40
32
24
38
26
12
12237
5608
2338
1243
417
136
89
25
15
10
10
15
9
6
92902
49415
26427
20685
11397
5800
5391
2128
1664
1508
1353
2230
1764
947
34776
15899
7021
4088
1384
422
249
76
65
65
37
61
61
31
9188
4239
1964
1179
483
169
109
34
24
18
13
18
12
6
13821
6531
2829
1653
599
189
118
32
22
19
15
21
11
5
14829
7645
3746
2656
1212
532
478
180
151
130
110
188
147
72
102
0.5 ‐ 16
1530200
31392
172613
134963
282893
468200
202793
290920
265340
593840
1599700
17560
47670
26013
26533
158897
79837
96847
78673
295513
182440
168360
66043
36120
47902
95878
143987
59190
197053
2296293
217973
350820
28613
46793
43317
30221
43230
45093
75660
10380
61313
40300
35272
59080
27068
69513
59615
29900
41760
9379
10820
16073
4693
5110
7606
12312
4752
16741
7978
4578
5264
30544
5502
9018
3534
6722
93738
18731
39424
294337
29629
49414
62406
393678
495572
193482
185315
14951
17002
55490
32548
59812
42490
18700
22149
222663
64204
17450
25859
32004
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Blackwood
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Sampling
Date
5/3/09
5/3/09
5/5/09
5/5/09
5/6/09
5/7/09
5/12/09
5/18/09
5/26/09
6/8/09
7/7/09
8/10/09
9/8/09
10/8/09
10/13/09
10/13/09
10/13/09
10/14/09
11/6/09
12/3/09
1/14/10
2/5/10
3/5/10
7/18/02
8/2/02
8/14/02
9/23/02
10/9/02
11/7/02
11/8/02
1/8/03
2/7/03
3/4/03
3/26/03
4/3/03
4/9/03
4/23/03
5/2/03
5/12/03
5/14/03
5/17/03
5/20/03
5/22/03
5/30/03
6/9/03
6/11/03
6/26/03
7/11/03
7/11/03
8/5/03
9/4/03
10/7/03
10/7/03
11/5/03
12/4/03
1/7/04
2/5/04
2/17/04
3/5/04
3/8/04
3/15/04
3/19/04
3/22/04
3/29/04
4/5/04
4/9/04
4/15/04
4/23/04
4/26/04
5/5/04
5/21/04
6/4/04
6/15/04
9/13/05
10/3/05
11/4/05
12/1/05
12/7/05
12/22/05
12/31/05
1/3/06
2/9/06
2/27/06
3/7/06
4/3/06
4/20/06
4/24/06
5/1/06
5/2/06
5/8/06
Flow
(cfs)
373.0
373.0
455.0
455.0
266.0
210.0
160.0
185.0
134.0
59.0
12.0
2.2
1.3
1.5
19.0
19.0
19.0
18.0
2.7
2.8
5.5
4.6
5.7
0.71
0.49
0.51
0.61
0.50
0.80
1.50
0.80
0.60
0.50
0.70
0.68
0.67
0.70
0.70
0.80
1.00
0.90
0.80
0.70
0.70
0.60
0.60
0.60
0.59
0.57
0.60
0.50
0.40
0.40
0.52
0.52
0.66
0.78
0.88
0.81
0.81
0.87
0.78
0.94
0.78
1.00
0.91
0.87
0.87
0.78
0.72
0.65
0.63
0.63
0.72
0.87
0.79
1.40
0.83
1.20
3.50
1.70
1.10
1.70
1.40
1.60
1.90
2.00
2.30
2.20
2.10
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20 0.5 ‐ 16
43768
30777
20300
19052
12240
6397
6253
2394
1998
1703
1491
2314
1610
667
150294
17187
8800
4652
3437
1624
691
557
194
143
129
102
188
135
57
37836
13399
7976
4351
3254
1537
614
492
180
137
108
94
146
100
51
32388
23622
12958
6993
5050
2463
1029
921
354
279
248
202
341
236
114
54695
19145
9927
5028
3577
1624
654
549
189
172
127
105
197
156
50
41451
48459
32862
19421
15326
7965
3547
3214
1201
964
845
752
1248
1002
438
136806
84823
58532
35568
29361
16851
8447
8072
3239
2534
2226
2008
3370
2686
1197
257718
9261
4821
2402
1621
722
299
243
80
64
55
49
71
53
17
19739
8037
4444
2468
1751
828
352
301
117
98
68
56
95
65
29
18680
11363
6018
2925
1924
813
336
311
130
102
91
76
135
96
48
24320
183462
114651
65903
51603
29282
14616
13777
5291
4283
3530
3092
5191
3800
1886
498483
29061
17216
10043
8026
4438
2150
1728
630
470
392
314
477
332
159
75276
145061
94710
61420
60611
43723
24649
24821
9616
8200
7214
6653
11475
9358
4255
507510
181998
137353
96938
102224
74280
40496
40740
15691
12833
10677
9844
15772
12166
5922
751012
81474
46874
27463
24001
15430
7994
7558
2970
2298
1910
1729
2531
1772
745
224004
236629
226063
177832
189576
132681
73619
69781
26707
21219
17747
15005
23191
15647
6314
1225695
256148
200248
135847
128181
81108
41565
38598
14005
10786
8541
7380
11477
7150
2686
941035
248437
254843
204917
214489
143803
76216
69739
25524
20366
16019
13730
21149
13302
5750
1322533
258890
237421
179448
179618
113370
57234
49945
17880
13105
10308
8350
11736
6964
2622
1144268
148383
118103
85091
85062
54252
25730
22169
7480
5306
3833
2984
4082
2300
786
564774
113356
83830
59004
56279
34325
15972
12917
4076
2872
2147
1721
2449
1184
451
390133
20878
14529
9667
9343
6124
3172
2681
918
688
526
465
640
391
163
70022
68526
48856
32555
31230
19738
10025
8646
3054
2265
1756
1436
2177
1279
550
231543
42486667 31408000 23283333 22062000 11469333 5717333 4799333 1483333 761333
562667
430000
583333
324667 127333 145371333
36363
23919
15661
14224
7856
3598
3159
1099
739
553
529
861
696
321
109258
33487
21626
13841
12605
6683
2964
2389
775
545
398
318
586
421
212
96637
29475
18385
11859
10619
5853
2703
2296
812
530
411
323
605
419
187
84290
33560
21185
13237
11501
5913
2663
2229
766
499
375
312
506
390
179
93136
25322
17894
12836
12655
7685
3678
2989
897
545
395
305
473
309
154
85983
41300
33468
27547
32987
24955
14018
13787
4973
3145
2502
2170
3602
2792
1568
207245
14708
10423
7266
6980
4047
1920
1553
451
280
189
165
241
173
73
48397
25403
17327
11598
10571
5850
2660
2141
639
389
289
262
386
267
122
77782
13999
7181
4021
2976
1379
572
421
123
79
62
47
91
68
39
31018
47835
30047
18303
14276
6320
2257
1609
464
279
225
183
318
247
137
122362
22417
12770
7219
5367
2304
860
630
181
127
96
83
136
91
64
52281
32272
19216
11779
9917
4915
2108
1701
567
376
266
258
431
289
142
84095
21135
11823
6604
5119
2386
1025
893
289
189
159
127
215
168
84
50133
23690
13998
8238
6426
2959
1256
961
300
183
137
133
216
185
95
58680
14774
8611
5539
5176
3048
1485
1410
517
342
283
226
404
294
142
42112
29290
17574
11602
11111
6924
3661
3657
1431
1007
783
665
1159
886
431
89750
22164
12481
6975
5287
2410
1085
916
288
185
131
109
191
142
77
52366
22370
11902
6944
5958
3099
1465
1421
473
309
249
231
368
287
145
55075
20857
10893
6245
5023
2408
1037
929
338
237
195
165
256
229
105
48809
10943
5783
3329
2501
998
333
263
84
53
42
38
58
45
17
24470
13393
6611
3402
2272
900
353
265
78
53
42
32
50
39
21
27489
14559
7388
3917
2596
1007
359
289
99
58
44
34
58
39
28
30447
18288
9988
5286
3621
1273
371
236
68
44
31
19
40
33
17
39298
17511
9178
4972
3635
1549
590
452
153
91
74
65
110
85
58
38466
17511
9178
4972
3635
1549
590
452
153
91
74
65
110
85
58
38466
16848
8882
4918
3725
1674
664
528
158
102
74
62
122
97
58
37854
11249
5268
2470
1473
466
152
114
36
24
27
19
35
34
20
21365
10198
6034
3525
2942
1560
702
618
210
152
124
108
201
179
96
26551
10198
6034
3525
2942
1560
702
618
210
152
124
108
201
179
96
26551
22641
11183
5970
4309
1913
771
638
185
127
100
89
125
137
79
48187
16987
9049
5193
4017
1833
771
611
194
127
116
99
167
139
77
39301
24004
12693
7218
5858
2969
1371
1275
465
311
234
217
367
303
161
57287
17229
8773
4853
3809
1932
783
706
227
167
96
113
176
135
79
38999
27511
14664
8233
6538
2937
1219
981
352
237
196
160
294
251
131
63573
17757
8845
4847
3689
1870
816
717
262
164
146
118
193
155
77
39579
25095
13264
7420
5633
2651
1107
956
299
215
193
169
273
226
117
57502
25942
13505
7861
6641
3595
1757
1724
663
446
347
338
542
416
209
63777
23175
10992
5882
4531
2189
997
848
297
168
137
128
201
165
89
49710
47246
29702
18482
15567
8436
3895
3877
1379
965
763
653
1155
966
507
133088
26679
13301
7053
5309
2557
1086
995
342
225
167
137
235
197
105
58281
20149
10136
5769
4657
2561
1273
1188
434
288
210
201
356
282
167
47504
15511
7527
4153
3352
1665
710
631
215
129
110
93
161
137
83
34391
18501
9107
4815
3555
1581
650
546
181
133
91
92
150
119
73
39521
23464
12455
6796
5148
2305
964
757
245
167
115
92
190
167
73
52866
15183
7355
4133
3239
1669
755
641
237
132
103
105
181
187
105
33920
16055
7925
4225
3135
1451
665
553
209
121
94
85
137
127
80
34783
15233
8110
4752
3789
1858
785
614
223
153
137
117
218
155
97
36144
17620
9654
5786
4707
2498
1097
973
359
221
188
183
331
274
149
43891
12946
6242
3175
2345
1135
475
397
139
84
69
59
97
74
49
27236
24843
11817
6403
4613
2258
952
813
300
200
152
153
250
153
78
52908
17000
7273
3643
2667
1100
480
430
135
105
105
88
138
103
45
33268
21520
9598
4822
2858
863
215
142
25
17
10
13
2
5
2
40090
207627
113687
63580
47407
23560
10607
9100
3613
2380
1813
1500
2307
1673
727
488853
21432
9632
4757
3767
1895
962
898
268
178
127
147
257
158
43
44477
53140
23553
11647
8653
4300
1713
1913
633
427
340
387
540
320
180
107567
552867
293042
151917
105383
45975
19558
16742
5608
4000
2750
2550
3425
1958
800
1205775
64233
26483
12277
8237
2762
848
535
120
80
43
30
33
5
5
115687
21533
8720
4553
3060
1427
713
587
153
120
87
120
107
87
67
41267
150067
74533
43200
33167
18183
9333
9483
3250
2667
1700
1683
2750
2000
1017
352017
36427
16457
8567
6230
2837
1077
727
217
150
107
123
197
97
43
73210
50387
25000
14240
12053
6133
2373
2253
693
587
253
293
467
307
160
115040
40340
21767
12137
9397
5053
2513
2167
627
440
307
230
373
193
97
95543
70337
35660
19903
15847
9677
4877
5383
1987
1457
1077
1040
1480
1043
490
169767
131440
68073
36067
27333
13467
6087
6287
1833
1120
1187
880
1093
813
307
295680
23727
11613
5980
4673
2247
953
853
373
187
153
147
220
93
80
51220
63193
27833
13867
9133
4107
2007
1713
593
400
387
300
427
267
187
124227
103
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Eagle Rock
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Sampling
Date
5/10/06
5/15/06
5/18/06
5/25/06
6/8/06
7/5/06
10/3/06
11/7/06
12/5/06
1/5/07
2/6/07
7/2/07
8/7/07
9/9/07
10/5/07
11/6/07
12/5/07
2/5/08
3/4/08
4/2/08
4/15/08
4/19/08
4/28/08
5/2/08
5/5/08
5/9/08
5/14/08
5/22/08
5/29/08
6/5/08
7/9/08
8/5/08
9/4/08
10/8/08
11/3/08
12/4/08
1/5/09
2/9/09
3/5/09
4/8/09
4/20/09
4/22/09
5/9/09
5/11/09
5/18/09
6/1/09
7/6/09
8/3/09
9/1/09
10/8/09
11/2/09
12/3/09
1/9/10
2/3/10
3/4/10
4/13/02
4/22/02
4/23/02
4/26/02
5/7/02
5/17/02
6/3/02
7/8/02
7/18/02
8/13/02
8/14/02
8/15/02
9/13/02
10/9/02
11/7/02
1/8/03
2/7/03
3/4/03
3/27/03
4/3/03
4/8/03
4/9/03
4/23/03
5/2/03
5/12/03
5/14/03
5/20/03
6/6/03
6/10/03
7/11/03
7/11/03
8/5/03
9/4/03
10/7/03
10/7/03
Flow
(cfs)
2.00
1.90
1.80
1.70
1.60
1.60
1.90
2.00
1.70
1.80
1.60
0.91
1.00
0.95
1.10
1.00
0.74
0.87
0.87
1.00
1.10
1.10
1.00
0.94
0.91
0.89
0.86
0.87
0.92
0.87
0.81
0.52
0.52
0.85
0.92
0.69
0.50
0.71
0.78
0.93
0.96
1.00
0.90
0.79
0.79
0.69
0.64
0.62
0.64
0.60
0.69
0.61
0.69
0.69
0.67
4.80
3.40
5.30
5.60
5.60
3.00
2.60
1.90
4.60
1.74
1.70
1.74
1.80
2.60
1.60
2.60
3.40
3.00
6.40
3.40
4.30
4.30
4.40
4.60
4.40
5.10
5.10
3.10
1.60
1.70
1.70
2.10
1.60
1.70
1.70
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
44473
19840
10347
7533
3727
1793
1587
440
307
300
233
420
260
93
61367
31253
16633
13380
6600
3173
3187
1060
620
513
380
567
453
167
59413
27827
14060
9033
3840
1587
1320
527
380
227
293
427
260
127
40140
19687
10330
7703
3577
1687
1367
487
343
227
190
380
280
143
98493
60413
36000
31920
19427
10013
8747
2880
1627
1200
880
1107
560
267
33493
16453
8673
6387
2940
1467
1180
413
247
247
227
380
213
80
133740
75800
46267
38960
18427
7547
5547
1740
1107
787
527
973
533
200
71307
34573
17667
12640
6480
2173
2080
547
413
400
253
440
400
173
20290
8987
4570
3250
1370
630
487
117
143
113
90
140
87
60
37367
18473
10040
6587
2900
1133
1053
320
200
220
140
273
127
33
24387
11853
6337
4800
2167
917
903
327
213
183
180
240
217
100
27539
14373
7881
5623
2303
886
753
247
161
125
105
171
138
61
2538
1177
586
436
229
103
104
39
27
24
22
37
29
14
2810
1615
936
760
387
173
176
71
54
42
39
63
41
15
2607
1454
848
750
463
230
265
97
76
58
50
73
48
20
2990
1631
879
688
354
158
179
66
46
38
30
45
25
10
2751
1256
635
503
287
137
165
66
48
40
34
56
34
13
2729
1551
935
829
508
247
267
98
68
53
47
63
36
14
2626
1411
808
658
340
144
146
54
38
34
32
51
37
14
2925
1572
874
746
401
185
192
73
56
44
38
67
41
16
9102
4679
2882
2763
1785
835
835
248
164
110
87
105
59
17
8728
4406
2578
2376
1451
692
654
197
128
94
72
84
43
14
3351
1878
1004
802
434
200
196
71
52
44
37
70
55
24
3271
1833
1000
774
377
161
163
63
48
41
39
73
53
23
2256
1282
790
594
324
145
137
55
42
38
34
66
55
23
2635
1216
623
499
286
132
135
52
40
36
33
62
54
25
577
308
166
123
65
29
27
9
7
6
6
10
7
3
15960
8639
4609
3448
1831
832
743
284
224
203
177
289
229
106
18478
9712
4962
3406
1532
620
505
199
156
165
147
243
203
90
26418
14451
7499
5394
2653
1170
980
341
264
242
209
312
213
100
15657
8780
4572
3219
1502
628
552
208
171
142
119
205
163
81
21930
13011
7055
5239
2665
1179
1096
403
312
262
243
406
313
160
12613
7353
3814
2718
1342
576
511
183
151
140
109
197
150
81
9700
5033
2465
1633
762
348
322
121
104
91
85
138
120
59
12832
6590
3127
2013
841
324
248
80
69
57
42
78
69
33
9782
5218
2597
1692
791
321
288
108
96
79
76
121
89
45
12005
7285
4094
3000
1499
612
523
176
143
121
109
192
145
66
12947
7481
3924
2938
1511
669
593
225
181
144
119
195
135
56
15325
8483
4665
3417
1633
624
496
154
135
121
97
134
95
43
11381
5835
3099
2370
1318
620
604
226
179
159
147
256
209
89
18167
9887
5539
4501
2539
1199
1073
402
314
288
248
369
288
138
28502
15388
8476
6480
3431
1553
1407
513
465
371
336
574
420
194
11218
5974
3157
2347
1242
596
580
247
209
183
162
289
230
111
14327
8923
5081
3917
2005
957
866
342
279
228
208
332
233
103
14459
9643
5788
4722
2574
1268
1220
479
402
353
315
519
394
189
10452
6248
3561
2606
1368
667
685
280
228
208
188
328
255
131
12110
6723
3493
2286
1018
406
356
130
113
89
77
140
105
47
9142
5304
2896
2172
1135
530
500
183
163
135
136
214
167
88
10689
6395
3542
2528
1190
517
456
174
137
118
113
195
154
70
11429
6450
3282
2263
1035
424
379
138
116
103
94
151
127
59
12205
6634
3554
2616
1216
446
343
115
90
77
63
98
75
44
8871
4808
2422
1713
775
328
265
90
66
59
49
80
56
27
14399
8189
4364
3310
1639
687
569
202
170
121
106
174
122
61
11629
6793
3661
2713
1310
544
473
174
126
115
104
164
127
63
10354
5631
3058
2279
1069
481
405
154
120
101
93
139
108
54
43004
23219
12145
7989
3237
1274
1049
375
254
219
159
277
222
121
29156
15532
7674
4771
1746
759
639
204
146
89
83
113
90
43
27509
13904
6984
4698
2369
1309
1271
433
296
221
169
269
203
100
36114
18444
9543
6391
2505
1008
855
277
153
131
119
163
144
87
37111
23145
13099
9327
3763
1464
1204
423
184
116
87
105
70
34
42177
25082
14893
11161
4575
1689
1419
368
198
133
115
174
124
57
36291
20661
10925
7028
2612
925
596
141
79
65
51
65
51
24
36348
26491
16726
13749
6867
2773
1981
567
298
210
169
241
163
85
60407
38340
19583
15178
8714
4579
4133
1372
916
659
613
868
637
310
207571
181395
66904
10709
2243
760
408
160
72
43
32
75
21
19
28442
18253
10541
6660
2357
827
603
159
91
79
64
95
64
28
146739
102715
71792
62949
28408
10619
7456
2043
1011
696
584
741
421
152
26503
16042
9462
6121
2340
867
706
185
110
68
65
83
66
31
26459
15055
8231
5775
2176
872
626
172
98
71
60
86
60
31
7587
5713
4421
5291
4040
1917
1490
419
223
155
117
163
97
41
8658
4381
2675
2529
1561
744
565
146
80
52
34
53
31
13
25230
13610
7450
5541
2653
1112
805
240
142
107
77
136
91
41
32057
15463
7597
5287
2333
928
565
145
90
58
45
78
43
21
93725
57397
34803
27295
13580
5716
5115
1848
1269
1080
899
1453
991
436
67241
34187
18216
12608
4776
1633
1096
300
215
143
112
184
119
40
47298
25832
13871
10283
4199
1579
1137
346
209
173
131
211
121
54
56731
32825
18455
13783
5997
2317
1647
501
313
223
169
259
155
69
48489
24235
12191
8189
3368
1371
1125
357
212
156
113
205
131
77
49836
24833
12337
7698
2702
851
559
144
87
69
50
73
65
28
27360
16204
10065
8652
4443
2043
1880
601
415
296
273
392
275
120
35568
20396
12657
11069
5663
2698
2444
827
549
399
319
451
309
115
46378
27929
17195
14478
6439
2495
2025
567
311
223
157
249
152
65
13737
8771
4911
3308
1604
922
733
208
134
101
83
117
84
33
44831
24521
12525
7813
2707
849
676
215
153
102
85
123
118
55
28679
15246
8207
5915
2403
705
451
114
69
46
34
51
32
15
28679
15246
8207
5915
2403
705
451
114
69
46
34
51
32
15
33321
17982
9023
5897
1944
693
587
190
114
62
47
63
39
16
22546
15848
13393
8463
2279
874
699
234
132
93
70
92
46
18
37335
20827
11191
8667
3940
1404
874
189
109
62
40
54
34
14
37335
20827
11191
8667
3940
1404
874
189
109
62
40
54
34
14
104
0.5 ‐ 16
91260
139187
119193
86397
273267
72320
331953
149373
40273
78833
52723
60305
5351
7166
7019
7128
6012
7433
6377
7215
23652
21503
8195
7896
5817
5802
1341
37467
40329
60146
35917
54113
29856
20922
26370
21257
29905
31062
35378
26404
44813
67917
26433
37697
42133
27072
27046
22674
26208
25989
27531
19581
34054
27934
23990
93424
61002
59636
75847
90099
102107
79490
106581
156000
470392
68236
436173
62618
59741
31631
21509
57193
64691
245171
140829
105390
133374
100141
99305
72900
93349
118598
34710
94718
61952
61952
69963
64770
84727
84727
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Sampling
Date
11/5/03
12/4/03
1/7/04
2/5/04
3/5/04
3/8/04
3/15/04
3/22/04
4/5/04
4/15/04
4/23/04
4/26/04
5/5/04
5/21/04
6/4/04
6/15/04
8/5/05
9/13/05
10/3/05
11/4/05
12/1/05
12/7/05
12/22/05
12/31/05
1/3/06
2/9/06
2/27/06
3/7/06
4/3/06
4/20/06
4/24/06
5/1/06
5/2/06
5/8/06
5/10/06
5/15/06
5/25/06
6/8/06
7/5/06
8/1/06
10/3/06
11/7/06
12/5/06
1/4/07
2/6/07
2/10/07
2/11/07
3/6/07
3/20/07
4/5/07
4/30/07
5/4/07
5/16/07
7/2/07
8/7/07
9/9/07
10/5/07
11/6/07
12/5/07
1/9/08
1/9/08
2/5/08
3/4/08
4/2/08
4/14/08
4/19/08
4/28/08
5/5/08
5/9/08
5/14/08
5/16/08
5/22/08
5/29/08
6/5/08
7/9/08
8/5/08
9/4/08
10/4/08
10/8/08
11/3/08
12/4/08
1/5/09
2/9/09
3/5/09
3/19/09
4/8/09
4/20/09
4/22/09
5/2/09
5/7/09
Flow
(cfs)
2.00
2.50
2.70
3.00
3.30
3.50
6.20
12.00
5.80
4.20
4.40
4.40
3.10
3.10
3.10
2.80
2.40
2.50
3.80
4.00
4.60
3.10
8.90
46.00
9.10
6.60
11.00
7.30
8.90
9.60
12.00
18.00
18.00
15.00
14.00
14.00
11.00
7.50
5.30
4.90
4.90
5.30
5.50
7.20
5.60
6.40
7.20
6.20
8.20
5.10
5.30
4.60
4.00
3.00
3.10
2.80
2.60
2.50
2.50
4.00
4.20
4.00
3.10
7.30
6.80
6.60
5.60
5.00
4.80
2.80
3.10
3.50
4.20
3.50
2.20
2.20
2.00
2.50
2.30
2.60
2.50
2.60
3.00
3.90
5.80
4.60
4.80
5.00
6.30
4.20
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
28807
12001
5885
3811
1387
499
326
82
49
37
23
35
32
12
25669
11657
6130
4557
2175
919
695
219
147
93
73
146
109
44
34169
19056
9631
6319
2399
984
845
284
174
125
101
169
110
51
49449
25573
12846
8489
3407
1366
1025
291
174
117
103
132
77
40
46285
23361
11625
7857
3252
1296
1075
334
203
164
151
226
131
64
60756
34667
18548
13021
5329
1897
1411
415
301
197
135
226
141
60
46105
23890
12847
10083
5205
2404
2170
752
486
365
308
418
257
117
54777
29133
15496
11274
5454
2538
2542
943
626
475
422
701
461
239
32615
16012
8628
6834
3420
1651
1549
536
317
243
204
303
228
112
38939
21539
12113
8603
3517
1374
1101
320
195
140
118
158
89
37
51216
30358
16579
12386
5893
1954
1489
467
280
181
142
187
106
33
23036
13260
7547
5802
3075
1508
1261
506
374
236
181
232
138
66
34468
24733
15645
11647
4436
1683
1457
343
182
129
93
127
81
40
16795
11304
7802
7916
4415
1992
1935
691
469
317
244
355
185
74
41164
26676
18240
17543
10091
4168
3385
1191
723
554
391
474
257
93
38470
18777
9907
6967
2921
998
802
195
124
77
58
73
41
19
20157
7230
3122
2228
1388
515
390
122
72
48
55
85
42
17
32427
15702
8440
5993
2533
952
707
178
142
115
63
70
48
27
63203
31605
23237
27938
8482
1838
1195
325
180
93
113
103
65
18
33718
14042
6805
4313
1377
475
318
105
63
47
45
42
18
10
572513
411947
261673
211667
103373
46653
43173
14667
8887
6800
5473
7840
4133
1220
60997
26673
12387
7600
3032
1410
1212
458
298
212
150
235
158
70
301940
150920
80213
61787
28660
12727
11347
4100
2460
2060
1927
2653
1767
733
542355
407560
251875
194545
91695
39410
35675
11675
7345
5740
4555
6055
3320
1060
107847
53857
26812
18288
7518
3122
2515
708
430
293
193
282
138
30
77447
32647
15787
11620
5313
2133
1693
547
253
293
220
260
147
27
798067
568350
377717
330950
174817
79483
71483
24017
14483
10717
8067
12317
6750
2117
76873
33150
15247
10030
3907
1483
1083
330
177
170
127
163
107
43
286907
141627
78040
56307
21653
8573
5667
1507
773
600
493
707
387
93
107027
53860
29277
21737
9377
3633
2713
637
383
260
190
307
190
110
108793
53283
27687
19310
7813
2917
2303
630
423
223
253
263
237
110
608233
769220
639640
640973
363053 164407 131560
36973
21747
13433
10567
12487
5747
1700
334987
196660
114707
92000
45020
18820
16587
4780
2880
2120
1593
1847
1087
353
140120
71347
40713
30520
16040
7287
6200
1840
1113
847
600
1020
607
200
111940
59093
31320
23433
11387
5093
3827
1107
627
520
387
580
280
127
84947
42647
22867
15507
6227
2420
2160
647
493
320
220
293
287
127
78397
42273
23613
19263
10013
4723
4333
1187
807
627
420
633
483
230
105587
62013
35640
28013
12653
4453
3080
893
520
440
347
387
307
80
86140
43883
24017
17967
8140
3070
2377
710
353
293
150
253
137
50
38640
21390
11123
9080
4350
1850
1833
550
357
257
180
267
110
33
121587
66707
37877
28867
11637
4140
2917
713
443
307
173
257
147
47
258333
141520
86413
73747
38560
16773
11787
3467
2093
1013
1107
1373
907
293
39047
18097
9357
7050
3283
1370
1327
417
310
217
223
307
190
107
260447
137167
74847
54393
25933
11980
10413
2940
1853
1353
973
1693
1147
500
61183
30517
15587
11470
5387
2443
2240
723
507
353
347
453
273
167
141887
71503
35553
22183
7977
3267
2773
853
517
313
273
397
260
87
343820
256970
159137
123977
55027
22340
17563
5383
2963
2187
1660
2243
1263
407
65897
33977
19513
14450
6167
2610
1847
603
383
297
217
337
233
93
85173
43827
24113
19000
9087
3587
2673
700
507
293
233
280
167
93
46413
24451
13113
9560
4004
1723
1335
373
237
198
190
235
155
59
46690
27427
15211
10758
4332
1532
1197
344
193
144
102
155
81
40
32466
17220
9351
7037
3411
1477
1262
391
236
187
150
185
128
40
63215
38617
19669
11923
3491
914
614
167
97
60
56
76
50
27
87226
43872
24902
17558
6709
2321
1629
429
253
214
139
176
110
55
3781
2287
1295
1038
499
166
110
27
16
10
9
14
10
5
5589
2961
1616
1230
517
175
151
44
29
21
17
23
10
3
4092
2496
1363
1040
455
163
127
36
21
16
11
18
13
5
3407
1807
971
790
411
173
169
55
36
28
22
27
13
3
3269
1527
756
576
272
107
92
29
17
13
10
13
6
2
3899
2411
1369
1038
468
167
121
36
23
17
15
26
16
7
2471
1259
716
617
345
162
168
67
49
43
38
69
50
20
10936
4505
2299
1901
1013
433
405
93
73
36
23
25
8
1
9150
4441
2392
1889
1012
426
368
98
47
30
21
19
7
1
11761
5955
3711
3548
2277
1082
1007
304
182
121
84
94
37
8
21224
11714
7624
7740
4953
2257
1933
475
254
140
94
85
32
5
22036
11289
6572
5978
3433
1493
1229
325
184
111
71
71
33
9
9742
5438
3511
3609
2492
1287
1243
385
228
141
100
114
32
7
9617
4894
2786
2462
1551
747
653
195
117
77
47
55
22
4
12106
5552
2898
2374
1401
662
632
202
120
72
57
69
21
4
32816
15833
7919
5583
2760
1226
1035
342
268
187
196
260
205
63
43243
23060
11971
8380
3655
1459
1190
353
315
233
191
300
176
63
34195
18749
10085
7176
3704
1605
1458
485
370
301
243
370
255
116
32079
17171
9216
6742
3511
1535
1276
400
340
248
222
292
204
79
39659
25683
14720
10663
4877
1964
1439
460
351
290
248
312
189
70
32697
19935
19061
28870
7042
1284
953
282
219
152
118
203
129
54
22539
11566
5922
4162
1885
747
564
186
132
110
80
112
81
37
22624
11124
5727
3931
1831
691
511
141
108
68
55
86
48
21
71494
44486
28090
23003
10697
3888
2570
786
533
310
263
404
220
76
30775
18491
12221
13209
4819
1294
906
258
165
116
94
149
92
29
25256
14642
8502
6628
3413
1514
1392
478
309
271
179
239
127
49
17701
8355
3937
2620
1234
538
431
149
118
102
80
132
85
38
23348
9645
4291
2582
1035
373
306
110
85
55
51
82
66
35
28604
14570
6723
4134
1643
652
510
154
96
83
62
93
51
23
50609
28044
14918
11809
6311
2886
2467
845
653
492
402
636
410
164
68999
44144
26548
23311
13808
6835
6484
2433
1874
1596
1473
2300
1641
805
19613
9439
4873
3925
2353
1209
1127
406
320
289
229
368
258
108
38600
22214
12410
9862
5389
2456
2240
853
684
519
448
675
449
183
38109
21716
12126
10135
5905
2972
2775
1007
782
627
515
739
464
159
15153
9818
6988
7816
6151
3444
3382
1191
877
722
600
852
550
230
15762
10103
7231
8408
6400
3218
2668
841
567
432
333
488
303
117
105
0.5 ‐ 16
52973
52590
74368
103048
95961
137043
105292
124841
72541
88205
121237
57155
95024
54420
124857
79409
35453
67370
158378
61368
1698800
114822
662560
1601805
222003
148360
2477217
142847
603240
229590
224137
3418040
833087
318253
249593
179033
186773
254333
187490
89987
275770
637093
81193
585140
131483
287757
994533
146530
189640
101988
108166
73500
138948
185540
9262
12382
9853
7909
6685
9605
6052
21748
19899
30161
58527
52825
28323
23223
26166
68630
94527
78995
73236
100854
110945
48086
46946
186744
82589
62950
35483
42030
57375
120481
201448
44410
96798
97871
57543
56755
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
Edgewood
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
Sampling
Date
5/8/09
5/11/09
5/18/09
6/1/09
7/6/09
8/3/09
9/1/09
10/8/09
10/14/09
11/2/09
12/3/09
2/3/10
3/4/10
4/5/02
4/11/02
4/15/02
4/24/02
5/6/02
5/6/02
5/15/02
5/16/02
5/22/02
5/29/02
6/13/02
7/17/02
8/21/02
9/19/02
10/22/02
1/20/03
1/23/03
1/23/03
1/23/03
1/23/03
1/28/03
2/20/03
3/15/03
3/24/03
3/26/03
3/26/03
4/10/03
5/17/03
5/24/03
5/29/03
5/31/03
6/1/03
6/7/03
6/15/03
7/8/03
8/14/03
8/21/03
8/21/03
10/22/03
11/28/03
12/6/03
12/18/03
1/22/04
3/11/04
3/18/04
3/22/04
3/23/04
3/29/04
3/29/04
4/6/04
4/12/04
4/21/04
4/27/04
4/28/04
5/4/04
5/5/04
5/13/04
5/20/04
5/31/04
6/11/04
8/9/05
8/15/05
9/16/05
11/8/05
11/16/05
11/29/05
12/1/05
12/1/05
12/1/05
12/2/05
12/2/05
12/19/05
12/21/05
12/22/05
12/22/05
12/22/05
12/23/05
Flow
(cfs)
3.80
4.00
3.00
2.40
1.90
1.70
3.30
1.90
3.40
1.70
1.90
2.40
2.80
63.00
59.00
93.00
36.00
56.00
81.00
73.00
88.00
30.00
64.00
9.60
0.87
0.73
1.00
0.78
5.20
15.00
15.00
18.00
18.00
28.00
6.60
28.00
22.00
64.00
77.00
25.00
72.00
127.00
151.00
123.00
133.00
78.00
18.00
2.10
0.90
3.20
2.70
1.00
1.20
2.70
1.70
1.70
9.60
64.00
54.00
62.00
58.00
59.00
99.00
66.00
51.00
154.00
96.00
71.00
107.00
24.00
29.00
14.00
4.60
1.00
0.90
0.84
1.50
1.80
4.60
11.00
41.00
57.00
23.00
21.00
101.00
169.00
157.00
265.00
116.00
84.00
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
16621
9532
6095
6337
4728
2375
1999
648
469
351
282
389
246
101
25458
17780
11147
9897
6720
2609
1998
634
480
365
296
411
215
82
24744
18146
12219
11366
8183
4818
2818
749
521
377
295
393
239
80
16443
11947
9128
9403
6141
2769
2061
629
441
336
266
359
208
84
30176
17925
11159
9608
4783
2038
1764
649
539
428
320
431
280
120
64975
38215
24281
23244
15534
8813
9125
3710
2882
2400
2261
3572
2604
1180
18349
15205
11715
11942
7587
3879
3530
1264
998
840
727
1077
735
324
32713
19893
11528
8861
4553
2236
2125
768
623
576
491
781
602
278
86138
46948
27383
21726
11356
4719
3835
1369
1071
967
972
1700
1618
794
20602
15029
10012
7323
2715
1204
1070
342
205
160
116
145
72
38
29546
14758
6983
4027
1357
478
344
118
70
53
35
56
35
19
39987
21976
11913
8596
3734
1313
883
272
205
141
116
172
88
40
92502
56022
33049
27130
15713
7556
6594
2329
1708
1371
1147
1559
906
298
19064
10539
6061
4049
1553
488
311
65
41
32
24
35
25
14
11462
6114
3173
2209
818
265
141
37
26
16
15
22
15
6
23082
12834
7207
5174
2021
587
349
104
70
32
31
57
36
13
7510
3752
2030
1576
726
270
178
43
22
21
15
19
14
7
11378
6380
3610
2739
1146
410
262
69
39
25
21
30
21
8
21824
13171
7730
5961
2504
900
535
147
73
60
42
65
48
20
11524
6232
3395
2407
949
322
195
45
28
18
13
22
15
7
15069
8327
4740
3437
1452
508
312
75
42
40
24
37
33
18
6168
3395
1930
1464
689
273
195
57
31
24
19
25
17
8
12334
7409
4272
3262
1403
501
343
101
65
43
36
50
35
17
6313
3918
2334
1628
583
193
132
40
25
18
15
22
15
6
12552
6844
3785
3028
1529
657
504
154
97
64
60
93
66
30
14363
8663
5036
3825
1906
769
467
109
52
39
31
43
30
16
11491
6138
3225
2359
1069
409
281
66
42
27
21
30
20
11
3147
1863
1207
1167
769
362
298
93
53
36
29
40
27
13
6367
2882
1327
887
367
133
94
27
17
12
9
13
10
4
16067
10182
6438
5197
2394
957
706
226
137
100
91
142
123
61
27026
17074
10569
8996
4589
2019
1498
463
292
220
181
253
189
79
19146
12209
7826
6968
3659
1237
822
213
124
99
75
126
89
41
28180
16875
10388
8917
4280
1635
1116
321
189
127
105
152
110
51
9303
5946
4314
4182
1560
474
309
92
53
33
31
49
39
18
5510
2464
1118
692
265
92
70
24
14
9
7
13
7
3
18947
10827
6146
4709
2003
773
619
195
128
94
76
126
88
37
7516
3890
2100
1559
695
268
211
63
38
27
21
33
18
7
45179
28773
17861
15163
7556
3259
2677
985
599
485
417
657
505
216
38401
21850
12899
10088
4799
1907
1461
495
285
218
199
283
209
100
10616
5035
2515
1783
702
248
179
53
26
21
11
20
10
7
13349
6877
3821
3106
1382
495
367
107
64
49
40
61
40
15
20753
10754
6029
4667
2063
836
631
189
138
87
73
123
89
40
12084
6890
4172
3328
1521
589
442
135
84
62
43
75
37
12
12176
6290
3563
2777
1208
460
344
115
74
47
36
55
30
13
10140
5745
3419
2766
1333
503
421
130
80
56
44
56
49
19
6433
3900
2371
2083
1042
425
310
79
48
33
23
34
17
8
10189
4640
2211
1590
668
253
178
44
27
17
12
16
15
3
4632
2725
1528
1173
680
289
164
42
23
16
11
17
9
5
12782
6848
3367
2144
822
282
185
42
24
15
15
18
11
5
10435
5151
2729
2216
1201
499
469
159
89
70
68
75
63
37
35830
21891
14573
13637
7539
3351
2707
775
456
323
307
408
249
123
12716
6064
2880
1927
782
270
195
57
33
25
19
28
22
9
13442
5959
2591
1502
546
182
118
34
25
16
10
21
11
7
32191
15527
8081
5724
2242
811
607
170
106
67
65
107
90
36
8854
4246
1948
1208
399
120
79
19
13
8
5
8
6
3
9566
4249
1982
1351
527
176
113
31
15
12
11
15
8
4
9299
4491
2562
2058
911
337
245
65
53
25
23
34
21
11
13255
7344
4243
3634
1669
618
489
164
97
71
57
100
65
37
19191
10200
5971
4717
2066
727
487
139
84
53
49
87
44
19
57719
36049
19767
13785
6572
2909
2415
734
419
288
206
280
195
95
51525
27296
14144
10003
4600
1925
1699
519
345
245
195
273
213
97
35824
17647
8939
5729
2094
714
495
132
93
67
44
76
49
28
6917
3541
2081
1757
827
314
226
62
43
33
16
34
13
8
9509
4571
2368
1861
806
316
227
75
36
27
21
34
21
19
10358
5085
2674
1783
757
263
178
47
34
23
15
28
13
7
293533
166087
102133
87153
49913
22007
19327
6587
4220
2940
2420
3673
2287
1113
43223
25325
15159
13293
7108
3158
2619
846
515
385
273
402
240
96
17386
8356
4582
3547
1658
658
492
147
81
60
47
63
44
25
20670
11737
7095
6157
2881
1092
893
273
181
124
101
143
107
43
12888
5969
3036
2131
908
343
236
68
30
24
20
29
23
15
9704
5764
3258
2639
1184
423
324
80
58
49
30
50
34
16
6815
3799
2237
1845
872
338
235
59
37
31
21
36
18
9
7981
3786
1852
1292
547
218
168
53
29
23
16
28
21
8
9080
3455
1480
1023
407
138
80
32
15
5
12
7
12
0
18647
8068
3653
2313
837
230
188
52
22
17
18
18
17
8
11573
5045
2338
1687
707
217
167
38
37
12
8
15
17
8
21605
9155
4685
2853
1255
437
290
57
30
40
30
30
22
13
30493
12803
6175
4045
1678
593
393
115
82
53
20
53
28
7
63300
33622
18212
12662
4660
1547
1252
373
235
252
175
238
160
78
145387
61033
28733
19480
7900
3367
2480
887
460
347
307
500
287
153
400493
191693
95253
69593
31353
13147
10593
3940
2533
1747
1433
1913
1160
427
585107
308147
161787
120780
58033
24780
20273
6000
3833
2607
1933
2780
1447
427
50607
22993
12053
7653
2660
1073
760
267
260
207
160
267
180
53
96713
37607
16593
9233
2547
847
553
180
80
67
80
67
93
13
14343
5987
2953
2130
713
270
213
43
17
23
10
30
13
7
196647
96090
50363
38387
18537
8043
6563
2090
1367
970
757
1347
767
283
186193
95057
54773
42647
20743
9503
8207
2850
1853
1447
1117
1827
1107
383
51143
28577
17790
15097
8020
3850
4043
1567
1080
837
880
1247
900
347
72043
38367
22710
19667
11510
5577
5273
2057
1290
1113
1107
1463
1070
463
14627
7160
3783
2687
1157
450
300
97
67
37
20
57
30
13
106
0.5 ‐ 16
50073
78011
84867
60130
80100
201615
77846
85751
209801
58993
57859
89398
247585
42287
24312
51585
16177
26128
53061
25164
34096
14287
29854
15236
29432
35333
25177
9092
12145
42759
73370
52593
72396
26387
10286
44731
16438
124115
93093
21218
29757
46431
29460
27175
24741
16799
19859
11310
26554
23227
102045
25016
24455
65789
16913
18056
20125
31805
43817
141337
112982
71905
15865
19873
21259
762280
112547
37121
51455
25705
23596
16344
16012
15745
34080
21860
40488
56533
136687
271167
824853
1297507
99140
164660
26747
421927
427323
135030
183247
30470
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
Sampling
Date
12/28/05
12/28/05
12/30/05
12/30/05
12/31/05
12/31/05
1/1/06
1/27/06
2/3/06
2/27/06
2/27/06
2/28/06
3/24/06
4/3/06
4/27/06
5/4/06
5/8/06
5/12/06
5/20/06
5/18/06
5/26/06
6/2/06
6/7/06
6/15/06
6/21/06
7/13/06
8/14/06
9/18/06
10/20/06
11/3/06
11/14/06
11/13/06
11/14/06
12/14/06
1/22/07
2/9/07
2/10/07
2/20/07
2/20/07
3/13/07
3/26/07
4/3/07
4/25/07
5/1/07
5/9/07
5/10/07
5/18/07
5/16/07
5/23/07
5/31/07
6/13/07
7/13/07
8/14/07
9/12/07
9/22/07
10/12/07
10/20/07
11/11/07
11/14/07
12/5/07
1/15/08
2/14/08
3/20/08
4/7/08
4/13/08
4/14/08
4/28/08
5/6/08
5/9/08
5/14/08
5/26/08
5/16/08
5/18/08
5/21/08
5/30/08
6/9/08
7/7/08
8/20/08
10/3/08
10/4/08
9/25/08
11/1/08
11/2/08
12/4/08
1/7/09
1/22/09
1/23/09
1/24/09
2/10/09
2/23/09
Flow
(cfs)
248.00
251.00
140.00
406.00
880.00
721.00
101.00
11.00
50.00
93.00
174.00
154.00
15.00
41.00
84.00
104.00
119.00
141.00
113.00
244.00
93.00
80.00
57.00
25.00
16.00
3.20
1.70
1.40
4.50
2.10
5.50
11.00
19.00
8.30
0.62
7.00
18.00
8.70
8.70
15.00
28.00
29.00
30.00
88.00
84.00
52.00
26.00
25.00
9.20
8.70
3.20
1.00
1.00
0.90
2.10
2.70
6.60
2.50
1.20
1.30
1.80
2.50
6.60
14.00
27.00
45.00
83.00
85.00
51.00
62.00
16.00
77.00
52.00
26.00
18.00
9.80
1.30
0.67
0.81
1.60
0.78
2.50
5.10
1.20
2.60
5.00
6.20
6.80
3.50
14.00
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
59017
27440
14013
9690
3637
1300
903
317
150
120
73
133
120
57
38800
19067
10423
7610
3163
1208
942
348
208
153
105
178
107
40
137305
80017
45092
34060
15733
6295
4768
1272
783
533
408
542
213
77
117343
71837
43183
35827
18265
7970
6998
2188
1498
1087
940
1340
885
275
27078
31892
24024
20891
9973
3926
2961
851
482
291
211
240
102
28
141193
233763
204360
193022
97700
41807
34318
10027
5497
3637
2633
2855
1077
290
89347
49920
29233
23270
11315
4952
4118
1313
880
670
503
748
355
180
16733
8607
4837
3960
1747
713
477
103
103
73
73
100
37
13
23328
11317
6125
4585
1990
787
503
142
82
65
60
63
45
17
105093
52327
29360
23327
11033
4940
4307
1613
1007
733
547
913
573
227
182560
96187
53633
43220
22733
10373
9413
3440
2420
1960
1653
2433
1667
700
238250
115483
64050
48933
23717
10350
8917
3117
2317
1267
1300
1950
1083
400
11608
5467
2862
2337
1172
385
292
73
52
42
22
42
17
5
31807
14893
8127
6300
2787
1213
1187
380
253
167
193
307
167
53
75660
40833
24253
21540
12843
6393
5900
1993
1260
907
797
1100
670
297
84487
44227
24627
18853
8247
3380
2847
827
420
320
280
353
207
40
599800
482567
323700
291140
158180
70980
56660
14760
9407
6400
4567
5533
2673
793
78860
37767
20413
15853
7813
3400
2647
940
513
380
300
380
173
100
65487
33827
18340
13647
5980
2313
1820
413
313
160
107
233
120
60
238813
141307
83313
70007
37647
16460
14093
4507
2787
2000
1733
2640
1367
673
41767
23343
13007
9957
3883
1117
810
133
107
87
47
93
37
10
32707
16593
9613
7540
3233
1460
1253
433
340
213
253
313
247
93
22840
10667
5527
3833
1433
420
393
120
60
87
53
93
33
20
21527
9073
4793
3633
1433
567
380
147
87
60
33
33
60
13
21627
10340
5280
4407
1700
720
520
73
93
53
40
100
20
7
13023
5317
2350
1693
610
210
200
80
43
40
30
20
17
7
11655
5033
2402
1737
773
297
188
77
32
23
18
23
20
0
19875
8673
4070
2828
1133
420
270
72
33
30
13
22
25
10
53960
28173
16433
13683
6367
2407
1727
397
280
180
147
193
77
23
74883
33897
17423
12803
5527
2200
1563
387
230
203
123
163
147
40
88387
35920
17667
12600
5440
1933
1413
427
213
160
107
227
107
53
11160
5777
3233
2635
1315
580
470
139
98
63
47
69
38
16
1019173 1860547 1749253 1784067 974867 413680 316867
85813
49760
33107
24213
29720
14013
4173
93493
55680
32393
27853
13607
5127
4153
1173
513
447
353
387
160
33
17303
9333
5247
3670
1543
700
690
157
113
70
57
57
37
10
19103
14088
10201
8978
3278
844
381
55
25
16
11
17
9
3
14081
7495
4381
3665
1755
700
619
201
120
69
78
119
80
37
10207
4643
2457
2047
1037
390
403
113
57
27
33
40
47
3
28787
13240
6607
4823
2250
887
787
253
110
73
40
57
30
10
32420
19223
11523
7907
3140
1180
823
257
200
143
97
170
103
33
12991
6410
3722
2831
1427
614
504
142
87
48
49
75
45
17
16147
7523
4187
2933
1430
637
653
237
133
120
97
140
133
50
21301
10987
6093
4750
2115
787
528
148
81
64
47
67
29
21
20423
12005
6829
5255
2460
971
855
233
150
112
82
113
57
27
18835
10423
6038
4943
2409
965
759
238
153
117
89
124
84
33
14176
7328
4110
3051
1307
476
303
73
41
18
20
27
15
4
13928
6889
3588
2581
1062
421
333
92
54
43
26
42
26
9
27569
13608
6840
4543
1699
780
778
331
216
218
193
336
255
136
3607
2345
1338
880
373
131
92
25
16
12
9
13
10
4
4225
2558
1422
972
431
168
126
35
22
16
13
16
12
4
6131
2683
1168
712
274
92
68
21
12
8
7
9
5
2
1276
530
251
176
76
26
19
6
5
3
2
3
2
1
1451
613
299
212
94
32
26
7
5
3
3
3
2
1
1337
591
297
215
91
32
26
7
5
3
2
3
2
1
1948
827
427
300
142
57
49
16
11
8
8
12
14
6
1164
441
213
154
69
29
22
6
5
3
3
7
6
4
2738
1271
651
500
258
118
121
43
30
26
22
34
25
11
2026
844
410
308
155
68
68
24
17
13
11
17
14
7
930
354
175
124
57
22
19
5
3
2
2
3
1
1
694
294
221
209
53
17
14
4
2
1
0
1
1
0
973
371
174
122
52
20
15
4
3
2
2
2
1
0
1261
539
284
221
108
41
34
10
6
4
3
4
2
1
1084
393
186
134
63
26
19
6
4
2
2
3
2
1
2168
1080
567
412
180
66
45
11
7
5
5
8
6
3
10489
6539
4379
4294
2800
1371
1408
420
275
190
139
165
75
20
3210
1791
963
710
332
128
105
31
21
16
15
23
18
9
8795
4376
2367
1950
1056
476
456
138
85
59
43
53
27
6
14320
8228
5206
4978
3290
1702
1787
566
354
259
193
226
103
26
2306
1055
530
369
171
67
53
16
11
7
6
9
6
3
8025
4460
2568
1975
944
372
279
83
63
45
45
59
41
16
3253
2109
1226
894
399
141
96
30
18
16
12
19
12
9
34010
20972
13308
11125
5750
2262
1803
568
348
322
283
383
303
107
17847
10604
6245
5078
2439
969
673
184
135
110
85
145
119
46
8111
4503
2383
1740
804
307
229
79
51
47
33
57
41
16
3897
2320
1167
789
358
133
93
27
18
13
11
15
9
4
3605
2386
1289
921
440
152
92
24
17
13
10
14
8
3
7377
3432
1610
1041
435
159
100
31
18
15
12
14
10
5
8501
4344
2259
1467
681
224
145
45
35
27
26
34
25
11
17960
9157
4529
3060
1190
408
265
85
65
56
41
74
50
26
11583
5733
2814
1722
632
189
131
37
23
21
15
27
14
5
3327
2313
1454
963
339
111
63
16
10
9
6
9
6
3
29655
15425
7958
5261
2408
1005
833
300
241
201
180
272
193
93
49097
23572
11041
6748
2527
834
555
147
117
88
79
102
61
22
4473
2224
900
486
167
57
41
12
9
7
6
9
4
2
6577
3013
1239
730
276
95
73
23
16
13
12
14
10
4
14507
7704
3998
2879
1421
600
497
191
165
115
101
172
108
43
25393
14520
8459
6823
3573
1616
1421
483
385
341
268
404
266
125
19245
10990
6178
4806
2390
960
789
254
200
151
116
201
129
52
7396
3833
2013
1528
741
290
246
78
59
44
37
58
37
16
46565
28251
15931
11931
5511
2181
1599
444
377
295
233
361
269
115
107
0.5 ‐ 16
116913
82313
327022
309362
122922
971888
216625
37563
49092
235773
431693
520733
24368
67780
194150
189073
2026367
169440
142760
616673
94387
74200
45560
41827
44973
23633
22278
37465
124023
149550
164600
25622
8355080
235340
38977
57005
33362
21500
57943
77187
28945
34370
46999
49543
45177
30945
29084
57365
8851
10016
11190
2376
2750
2613
3816
2123
5836
3975
1696
1512
1741
2517
1922
4559
32544
7364
19879
41212
4606
18959
8225
91438
44634
18385
8849
8970
14251
17811
36940
22941
8627
63933
94969
8396
12091
32457
63951
46411
16358
113949
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
General
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Sampling
Date
2/24/09
3/2/09
3/13/09
4/1/09
4/17/09
4/20/09
4/24/09
5/1/09
5/2/09
5/2/09
5/3/09
5/5/09
5/5/09
5/7/09
5/12/09
5/18/09
5/26/09
6/8/09
7/7/09
8/10/09
9/9/09
10/8/09
10/13/09
10/13/09
10/14/09
11/6/09
12/3/09
1/14/10
2/5/10
3/5/10
4/5/02
4/10/02
4/22/02
4/23/02
4/26/02
5/7/02
5/17/02
6/3/02
7/1/02
8/14/02
8/15/02
8/15/02
9/13/02
11/7/02
11/8/02
1/8/03
2/7/03
3/4/03
4/3/03
4/7/03
4/9/03
4/22/03
5/1/03
5/12/03
5/14/03
5/17/03
5/19/03
5/27/03
6/6/03
6/10/03
7/10/03
8/5/03
9/4/03
10/7/03
11/5/03
12/4/03
1/6/04
2/10/04
3/5/04
3/9/04
3/16/04
4/9/04
4/15/04
4/23/04
4/27/04
5/5/04
5/21/04
6/3/04
6/15/04
9/13/05
10/3/05
11/4/05
12/1/05
12/5/05
12/22/05
12/29/05
1/3/06
2/6/06
2/27/06
3/7/06
Flow
(cfs)
15.00
26.00
6.60
16.00
14.00
45.00
45.00
48.00
129.00
129.00
166.00
192.00
192.00
118.00
89.00
100.00
35.00
18.00
1.40
0.92
0.74
0.99
3.50
3.50
2.70
1.30
1.00
2.70
2.30
4.90
2.60
2.60
2.10
2.10
2.20
1.80
1.80
0.92
0.27
0.03
0.05
0.05
0.12
1.00
3.20
1.10
1.20
0.90
1.80
1.50
1.80
2.60
2.10
2.40
3.20
3.40
3.40
3.80
1.40
1.00
0.10
0.20
0.20
0.22
1.30
0.51
0.99
0.90
1.10
2.70
4.30
3.40
2.80
2.00
2.60
2.50
1.40
1.10
0.72
0.52
0.47
0.70
4.10
1.90
6.20
3.00
4.90
4.10
6.50
3.80
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
18534
9268
4867
3398
1593
587
419
119
99
78
65
95
61
41
35702
20727
11941
9310
4696
1984
1644
565
461
395
299
531
352
155
3406
1795
858
538
202
70
49
15
9
6
4
8
5
2
7057
3644
1801
1218
518
209
156
52
36
26
22
27
18
8
7850
3993
2047
1380
625
255
197
63
49
38
30
51
32
13
127267
71600
42313
33853
16573
6813
5400
1840
1247
1167
880
1513
1127
607
14729
7955
4339
3271
1564
605
497
151
101
71
86
113
74
33
72980
44547
28667
24893
13553
5660
4747
1847
1213
1047
913
1533
1200
453
119833
74313
47347
41387
22407
9580
8247
2893
2420
2060
2000
3207
2333
1260
442460
300373
196360
190293
129500
71540
71307
27587
21373
18640
16467
25907
17720
7687
111073
64677
38520
30463
15587
6940
6680
2620
2067
1867
1747
2647
2023
1003
86153
47093
27283
22983
12473
5880
5387
1837
1353
1193
1033
1597
1013
503
50673
28650
16822
14288
8393
3830
3405
1130
920
685
575
800
532
213
20075
11325
6712
5647
3019
1349
1111
346
290
187
127
197
139
47
9724
5393
3123
2546
1350
571
427
137
108
87
66
97
74
36
25805
14768
8220
6670
3255
1280
932
305
205
182
123
210
118
65
8594
4693
2545
1888
884
363
269
88
62
47
39
64
41
19
3627
2222
1234
925
439
168
125
39
29
20
17
23
13
6
3793
1902
779
436
174
66
53
14
10
8
6
9
5
2
3955
2094
1022
743
371
154
80
18
12
9
7
11
6
3
8176
3843
1877
1279
531
196
127
34
26
24
16
25
13
6
3759
1764
725
416
154
49
33
8
6
5
5
6
4
2
21465
12137
6880
4443
1912
717
560
202
147
128
108
161
128
58
618747
325780
180613
156873
91053
41200
34167
11167
8353
6440
5540
8293
5100
2207
71407
34573
17080
11613
4507
1687
1093
253
113
60
73
127
100
27
6806
3524
1781
1135
437
132
94
26
16
14
11
15
6
3
3408
1475
580
331
120
40
30
10
7
5
5
8
5
2
7273
3531
1833
1310
547
212
166
51
40
32
27
33
24
10
6270
2896
1333
867
353
142
106
34
25
20
16
24
12
6
3748
2226
1128
742
301
116
87
28
21
14
12
16
10
4
76804
46802
26210
16051
4875
1404
876
278
158
124
108
174
143
76
79978
48250
24858
14626
4693
1718
1420
551
289
214
201
296
219
123
28831
15471
7486
4137
1124
350
246
82
50
30
28
62
46
30
29780
17513
9212
5844
2109
876
720
258
167
129
105
204
176
97
46461
27709
15451
10456
3905
1346
981
300
173
143
121
209
163
105
52655
32690
18963
13411
4581
1497
877
256
136
102
93
133
93
51
31407
16197
8046
4806
1314
328
195
47
30
18
23
43
32
26
19185
10024
4887
2840
815
236
145
43
29
17
21
25
21
13
28667
17341
10461
8072
3664
1474
1175
378
241
218
191
356
353
182
45598
26099
14631
11108
5477
2497
2350
876
655
507
534
909
813
433
1963
742
357
257
120
55
47
16
10
7
6
12
9
4
220683
144617
88587
70243
30753
10680
6960
1530
740
413
300
407
167
80
19936
10097
5021
3285
1233
496
387
112
74
55
53
73
64
30
24472
12678
6315
4131
1782
622
471
142
77
52
49
65
46
17
102343
69645
45730
40348
19895
8313
5665
1450
887
602
505
763
587
313
5591
3288
2155
1905
876
290
170
41
24
15
13
22
16
9
15940
9876
5800
4341
1871
675
442
134
82
61
51
83
66
37
17479
8392
4227
2807
1030
326
205
51
29
24
24
36
19
17
30409
16562
8195
4624
1250
352
254
73
48
28
27
42
26
16
37018
19969
10779
7385
2760
971
745
202
153
113
99
165
105
54
36110
18407
9767
6163
2053
667
421
111
76
59
40
70
57
31
31074
17304
8905
5801
2032
678
469
113
73
52
44
70
57
27
31228
17313
8781
5091
1482
446
320
87
47
33
20
36
23
13
24304
13628
7660
5998
2917
1276
1086
349
215
153
126
226
162
78
27072
16882
10658
9655
5243
2206
1624
434
261
199
144
218
146
64
46981
24125
11702
7149
2445
929
735
229
143
85
72
109
81
37
37753
20139
11185
8283
3898
1707
1401
382
257
159
148
237
174
77
24955
12733
6391
4098
1557
600
561
184
122
96
61
110
77
46
17144
8470
4210
2703
932
330
253
74
40
37
24
33
25
13
22980
11791
6101
3982
1399
485
337
92
50
34
28
43
26
15
30323
18402
10126
6712
2313
756
536
159
104
82
77
139
133
82
44957
24613
13203
8415
2949
1017
809
271
179
139
118
225
209
121
15400
6417
2756
1452
399
120
84
24
14
9
7
13
8
5
16269
6833
3206
2151
969
343
291
82
64
55
41
83
76
37
16919
7302
3465
2127
707
209
133
32
15
17
12
17
11
5
14425
6977
3601
2253
810
262
176
50
31
27
21
26
9
5
19559
9089
4407
2793
1006
336
242
66
39
28
22
31
25
12
25607
12993
6986
5009
1977
727
571
179
102
95
81
135
88
61
35406
22368
14554
13085
7316
3523
3396
1271
860
721
581
1005
677
309
54821
31079
16175
10515
3517
1136
760
215
116
87
75
122
85
37
59908
35606
20270
15815
7425
3153
2383
659
397
294
219
323
244
99
33239
16196
8217
5896
2483
988
675
180
104
75
51
69
57
26
28847
13505
6766
4332
1679
646
446
131
87
49
37
69
47
21
35149
17770
8879
5383
1846
616
457
140
99
70
51
69
53
28
24573
12451
7227
5547
2447
1012
879
279
211
143
127
207
178
75
35129
18565
10269
7372
3159
1229
898
291
155
120
109
200
163
70
23472
11930
6515
5072
2216
914
735
256
170
127
109
173
143
89
25667
12693
6808
4713
2084
827
667
237
171
135
115
211
196
102
23935
12229
6106
3963
1473
575
416
139
84
68
55
89
84
45
37730
17282
9100
5873
2428
918
833
253
237
130
137
245
182
112
21635
9307
4163
2275
718
237
200
48
37
42
30
43
37
17
27793
11683
5002
2583
642
145
83
18
15
7
8
10
5
0
208720
115787
66793
53353
26160
11527
10427
3647
2627
1820
1993
3100
2067
980
34128
13482
5512
3353
1112
430
320
105
90
42
50
95
58
33
225647
103540
50920
33433
15253
6933
6407
2327
1860
1260
1147
1440
960
433
146952
216745
192823
180030
77857
30808
25157
7827
4603
3145
2573
3428
1640
640
88608
46173
23943
15847
6092
2422
1970
603
360
268
168
290
177
80
47403
21260
10373
6257
2190
877
623
253
160
133
130
193
173
70
651783
388200
233050
184100
88100
40117
37667
12117
8717
6633
5583
9167
6667
2683
46315
22137
11150
7577
3063
1163
1067
318
177
163
127
180
127
52
108
0.5 ‐ 16
39182
88606
6964
14784
16609
311593
33556
202800
338027
1529527
286910
215280
130703
50523
23703
62073
19577
8881
7256
8482
16165
6932
48990
1493327
142687
13996
6024
15077
12096
8447
174007
177311
57944
67094
107416
125484
62483
38289
72590
112054
3600
576080
40885
50901
296733
14405
39423
34649
61892
80464
74001
66672
64908
58099
74742
94785
85722
51544
34275
47348
69861
97104
26703
30464
30965
28669
37644
54549
104763
118702
146695
68229
56641
70581
55279
77660
51832
54524
49216
75348
38772
47995
508020
58777
451127
893588
186922
90027
1671900
93563
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Glenbrook
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Sampling
Date
4/5/06
4/20/06
4/24/06
4/25/06
4/27/06
5/1/06
5/8/06
5/10/06
5/18/06
5/25/06
6/8/06
7/5/06
8/1/06
10/3/06
11/7/06
12/5/06
1/4/07
2/8/07
2/9/07
3/9/07
3/16/07
3/21/07
4/4/07
5/1/07
7/2/07
8/7/07
9/9/07
9/22/07
10/5/07
11/6/07
12/5/07
1/11/08
2/8/08
2/12/08
3/4/08
3/13/08
4/2/08
4/14/08
4/19/08
4/28/08
5/2/08
5/5/08
5/9/08
5/14/08
5/16/08
5/22/08
5/29/08
6/5/08
6/19/08
7/9/08
8/5/08
9/3/08
10/4/08
10/8/08
11/3/08
12/4/08
1/5/09
1/23/09
2/3/09
3/5/09
3/19/09
4/8/09
4/20/09
4/22/09
5/3/09
5/7/09
5/11/09
5/17/09
5/18/09
6/1/09
7/6/09
8/3/09
9/1/09
10/8/09
10/13/09
11/2/09
12/1/09
1/12/10
2/3/10
3/3/10
4/5/02
4/5/02
4/9/02
4/22/02
4/24/02
4/24/02
5/6/02
5/13/02
5/16/02
5/17/02
Flow
(cfs)
7.60
4.70
6.90
13.00
16.00
19.00
12.00
16.00
19.00
6.60
5.70
2.10
1.10
0.99
1.60
1.40
3.60
2.10
2.50
1.40
1.90
1.50
2.20
1.40
0.30
0.18
0.24
0.99
0.58
0.43
1.40
1.20
1.20
1.10
1.40
3.20
1.90
2.70
2.00
2.20
1.70
1.80
1.90
1.70
1.80
1.40
1.50
1.30
0.78
0.18
0.06
0.09
0.15
0.21
0.60
0.52
0.69
1.50
0.80
0.58
0.62
0.79
1.10
1.10
1.60
1.20
0.88
0.77
0.71
0.53
0.13
0.07
0.04
0.28
1.20
0.38
0.64
0.89
0.81
1.10
14.00
14.00
10.69
9.54
9.26
10.40
10.99
11.29
13.87
13.87
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
125347
60107
31960
23380
9300
3667
2513
820
500
273
313
400
273
107
110773
58287
31853
23717
10853
4710
3620
1020
640
383
387
477
307
140
155113
86183
47383
34337
15673
6180
4410
1247
750
577
420
517
340
163
296870
222810
145760
121787
60187
27310
24620
7703
5123
3550
2917
4297
2453
950
231397
135973
77303
60260
29733
14620
13897
4647
3007
2143
1893
2640
1703
587
239273
130127
73893
57053
26293
10173
7933
2180
1353
907
593
1060
567
280
130260
62100
32000
20760
8073
2940
2033
500
427
273
220
293
273
73
169873
88913
47680
35453
13773
5433
4087
1220
947
613
453
627
433
213
223327
119487
66353
49367
22793
9700
8247
2400
1600
947
880
1627
893
327
134333
70260
38027
26780
10893
3867
2947
913
453
293
253
407
247
140
61027
30107
15627
12613
6907
2667
2267
640
373
253
253
360
307
200
46470
24823
14260
11443
5527
2597
2217
697
397
443
330
580
310
150
31163
16703
8960
7010
3147
1443
1200
433
260
250
187
347
253
120
96660
48060
25780
18020
7800
2633
2240
633
387
427
267
440
240
120
102520
39293
19053
11213
4400
1293
907
267
120
93
107
187
40
13
19877
8567
3713
2057
597
190
137
50
27
20
10
50
23
20
276880
153960
84040
61787
28240
11453
9493
2747
1747
1267
1453
1880
1120
533
69497
29870
13607
7900
2657
990
737
220
153
93
93
173
127
43
124143
67613
35610
22930
7053
1747
1143
343
370
263
243
397
330
210
33057
15060
7663
5677
2693
1210
1110
267
240
153
150
260
150
83
44000
22687
11620
7947
3707
1607
1160
440
333
160
167
300
213
127
53520
27427
14940
12107
6340
2860
2673
900
533
420
353
433
247
107
16279
7582
3825
2486
1112
476
353
141
69
55
41
88
82
41
30161
16559
8882
6214
2387
923
902
307
258
211
177
324
265
103
26025
13008
6724
4738
2071
924
869
337
270
222
225
353
284
125
3243
1653
850
701
417
211
279
130
107
103
104
203
196
98
2854
1190
541
386
187
82
85
34
27
23
21
36
24
9
180777
87312
42754
32773
18444
9250
10123
3619
2410
1814
1478
1982
1082
300
3445
1760
930
678
334
147
144
47
38
29
25
42
33
17
3169
1342
612
393
153
46
33
9
6
5
5
6
4
2
3828
1504
599
367
171
74
76
26
18
12
10
14
9
3
2202
786
333
228
101
38
30
9
8
6
5
10
6
3
2705
1211
588
433
213
94
89
30
21
16
14
18
9
3
3126
1556
802
600
278
105
103
34
26
21
19
27
16
5
2764
1196
576
424
203
82
75
25
18
17
14
26
19
9
17607
9878
6169
6126
4282
2415
2681
942
617
456
335
390
167
29
3310
1674
860
650
302
120
107
36
27
23
20
38
24
10
17895
9186
5363
5011
3263
1660
1652
519
295
197
125
122
35
8
10427
5191
3069
3125
2374
1374
1526
504
323
211
164
162
67
14
11424
6660
4210
4451
3287
1912
2076
730
485
325
230
277
93
17
9140
5382
3699
4051
3128
1756
1898
613
405
285
197
217
87
18
8872
5548
3952
4592
3500
1989
2113
706
428
299
193
209
76
18
30471
15338
9743
10337
7792
4232
4680
1591
952
657
489
510
184
41
40421
24288
14195
11426
6357
3102
2786
1130
906
763
698
1130
808
382
49805
29683
16018
11730
5436
2432
2123
788
608
534
483
806
567
273
37819
24723
15186
13236
8470
4795
4890
2005
1608
1507
1413
2330
1679
799
29733
16639
9226
7252
3975
1806
1671
628
495
448
420
668
473
229
13030
8029
4299
3001
1446
648
625
253
201
180
164
271
193
85
34414
19817
10419
7333
3610
1808
1821
768
670
641
582
1090
933
482
28957
14077
6497
3765
1522
615
557
234
190
164
150
294
261
124
46876
22269
10542
6480
2805
1115
928
358
256
268
235
403
325
182
33981
15426
7002
4279
1786
686
551
194
128
112
94
165
116
70
31332
16733
7460
3411
1066
324
214
64
37
33
36
44
40
12
15880
6980
2970
1781
775
314
264
92
68
66
55
85
52
20
30195
20600
10612
7065
2971
935
507
136
66
43
48
60
39
19
10594
4216
1648
833
305
123
92
32
25
23
20
30
17
12
10822
4865
2233
1363
527
181
149
42
34
24
20
42
29
17
27169
14030
7339
5137
2236
841
747
273
220
178
160
256
213
121
15522
7741
3689
2332
976
338
267
80
70
61
49
70
53
24
28642
14271
7035
4481
1922
694
584
170
144
129
107
201
157
56
23937
11289
5112
2733
923
318
241
80
66
65
56
122
102
54
17075
9553
4617
2636
1138
560
591
256
216
208
203
388
329
176
24034
13931
7106
4580
1866
791
787
327
286
279
251
488
424
182
26623
16037
8366
5675
2782
1388
1447
597
526
499
449
838
639
278
25085
15903
10771
11570
9107
5409
5787
2340
1974
1880
1697
3074
2389
1201
12293
5477
2781
2470
1628
824
885
338
303
296
256
503
408
211
22064
10924
5063
2910
1217
535
557
232
220
194
206
331
289
151
26227
12950
6278
3744
1594
721
736
310
234
234
210
379
310
149
27730
14620
7191
4595
1995
903
805
314
270
248
217
392
326
158
12752
5338
2138
1127
517
271
278
113
112
106
93
194
182
99
15736
8015
3806
2362
1069
499
481
221
182
187
172
327
284
145
57237
24247
10481
7402
3640
1557
1280
444
329
279
246
386
293
139
222686
109546
46701
23005
6897
2308
2100
678
589
483
353
575
417
208
33953
14766
6596
4218
1910
793
692
237
175
133
106
192
137
59
102435
84885
67178
77922
59914
35121
40443
18255
16580
15852
15783
30804
28138
15044
15270
5841
2341
1475
738
331
341
125
97
87
74
142
96
45
14899
6564
3044
2049
895
317
239
68
62
48
31
42
35
9
52777
28637
15789
12188
6429
2978
2647
1025
743
645
614
1020
696
325
15843
7643
3584
2254
897
352
267
87
72
64
51
67
51
23
23775
12158
6197
4103
1642
548
394
118
77
76
53
88
64
30
84200
59944
38564
27307
10373
3497
2208
598
383
304
246
426
407
243
104748
67171
42140
28612
11267
3683
2511
777
455
349
313
533
403
276
67261
43088
24885
16856
5696
1733
1053
290
190
153
148
235
212
109
41957
29354
16449
10713
3782
1322
997
343
227
169
149
254
182
98
37992
25406
14460
9558
3367
1139
853
274
155
119
99
172
122
74
48926
103943
114004
124710
67469
30067
25345
8384
5350
4078
3488
5464
3696
1593
74989
55268
35780
26767
10176
3323
1800
437
260
212
173
317
273
176
101022
73178
45954
34337
14083
5164
3633
1114
701
528
479
692
629
299
71973
50305
31122
22832
9016
3042
1981
617
362
305
256
501
448
268
77738
61370
40270
32331
14016
5411
4066
1292
827
662
669
1157
938
521
109
0.5 ‐ 16
258853
247027
353130
925387
579217
551407
260153
369507
507620
289673
133400
110093
71357
203587
179493
35317
636067
126117
262187
67690
94340
122753
32590
67570
56050
8197
5491
393820
7654
5784
6708
3761
5440
6713
5436
52066
7190
45321
28515
36158
30857
32477
86979
108010
121012
119660
73434
32339
83907
57282
92859
64518
60795
29382
73277
17959
20330
58797
31250
58536
45044
37767
55150
65866
96985
28463
44742
53927
59607
23221
33342
107822
416336
63910
593310
26958
28294
126189
31232
49293
228457
262961
161799
105899
93715
544924
209773
281514
192758
240746
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Sampling
Date
6/3/02
7/1/02
7/17/02
8/13/02
9/16/02
10/8/02
11/4/02
11/8/02
12/2/02
1/7/03
2/6/03
3/3/03
3/26/03
4/2/03
4/7/03
4/8/03
4/8/03
4/22/03
5/1/03
5/14/03
5/15/03
5/19/03
5/22/03
5/22/03
5/27/03
6/3/03
6/9/03
7/11/03
8/4/03
9/5/03
10/6/03
11/7/03
12/2/03
1/5/04
2/3/04
3/2/04
3/9/04
3/16/04
3/23/04
3/30/04
4/5/04
4/9/04
4/12/04
4/12/04
4/21/04
4/28/04
4/28/04
5/4/04
5/6/04
5/20/04
6/1/04
6/16/04
9/12/05
9/27/05
10/4/05
11/1/05
11/1/05
12/1/05
12/5/06
12/8/05
12/22/05
12/22/05
12/31/05
1/3/06
2/6/06
2/27/06
2/27/06
3/8/06
4/4/06
4/21/06
4/27/06
5/2/06
5/3/06
5/3/06
5/8/06
5/10/06
5/15/06
5/18/06
5/25/06
6/5/06
6/12/06
6/19/06
6/28/06
7/3/06
8/2/06
10/5/06
10/5/06
11/3/06
11/9/06
12/8/06
Flow
(cfs)
9.54
4.20
4.40
2.10
1.60
1.50
2.30
4.70
1.90
2.20
4.30
2.30
6.70
4.60
3.60
4.40
6.70
4.10
3.90
10.00
6.90
8.30
10.00
15.00
16.00
12.00
9.40
3.00
2.40
2.10
2.70
3.30
3.10
7.40
3.60
3.80
6.20
10.00
14.00
9.30
11.00
11.00
12.00
12.00
8.20
11.00
13.00
17.00
13.00
10.00
9.00
6.70
4.80
5.00
3.80
4.00
4.00
7.40
9.30
4.80
21.00
23.00
65.00
14.00
7.20
13.00
22.00
7.70
11.00
14.00
36.00
43.00
40.00
35.00
47.00
44.00
46.00
54.00
48.00
43.00
36.00
31.00
25.00
22.00
11.00
5.80
5.80
7.70
5.00
4.40
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
48887
31918
19095
13471
4740
1411
845
237
156
118
79
111
99
49
33951
22698
15610
15007
8777
4099
3332
1023
626
474
407
622
435
194
249200
166867
125120
137000
91960
44373
38493
13960
8560
6453
5333
9213
6507
2827
72664
45017
27779
22393
10520
4541
3929
1357
897
668
625
908
687
288
51534
32589
19386
14343
5988
2409
1833
569
357
283
266
442
325
168
49159
29438
16546
11357
4280
1571
1174
341
228
153
122
233
183
105
2905
1704
1222
1293
752
345
282
88
52
43
38
64
47
25
2009617 1562781 1231949 1365761 952143 504526 478909 163073
107153
82734
65083
99187
63886
27543
7271
4371
3222
3391
2211
1107
972
320
194
138
137
179
124
59
13080
8303
6125
6700
4565
2383
2036
594
336
237
191
283
178
80
73015
40360
23181
17917
8744
3965
3637
1249
767
551
527
952
741
383
81587
47137
27829
19451
7365
2624
1577
441
251
147
153
236
164
84
712267
435720
252813
170920
61107
21320
18040
6227
3840
3533
2853
4813
4253
2147
217977
131803
76870
56803
24130
9410
6890
1913
1110
800
607
880
613
307
59671
38563
23491
17231
6385
2104
1498
456
278
219
185
298
201
92
171165
105219
63093
46045
17125
5741
4149
1347
800
573
563
928
688
341
96708
54452
29261
18896
6740
2225
1683
465
345
220
213
292
261
135
81380
45328
25777
18313
7057
2676
1989
592
395
293
272
397
280
127
91420
51651
29172
18920
6139
2003
1344
389
247
216
160
227
167
99
220913
137700
94587
94720
63687
35760
37607
15093
10353
8267
7413
11247
8167
3400
56087
27887
14605
11003
5727
2617
2307
637
438
335
245
400
263
148
46371
28407
16767
13717
7045
3194
2969
1065
687
511
481
820
589
295
49573
30528
18050
14238
6923
3151
2889
1032
673
512
461
797
658
355
148272
90384
53944
44493
23909
12088
12611
4877
3600
2968
2875
5125
4339
2283
44534
24891
14256
11243
5541
2554
2280
823
601
463
407
739
661
385
24778
13694
7788
5979
2766
1237
1115
370
254
175
158
256
197
104
23875
12868
6965
5079
2124
800
714
225
146
117
97
155
128
62
67333
37535
19643
12919
4217
1409
980
259
167
113
111
200
145
89
68257
34592
18440
12500
4943
2117
1805
660
485
367
384
649
584
317
52507
26428
12615
7171
2210
727
610
216
143
123
118
238
173
113
43378
24248
13009
9035
3711
1554
1302
393
266
165
161
297
216
119
44995
24609
13404
8941
3290
1058
702
195
116
79
47
94
57
29
24087
13108
7195
5215
2298
941
726
214
116
79
54
69
44
22
54351
37625
24807
20451
8897
3466
2759
897
571
437
361
641
445
222
91984
56837
34072
25340
9688
3408
2564
780
484
363
331
543
396
243
62455
37812
21824
16886
8088
3429
2647
735
452
273
223
339
218
101
116819
63211
34843
24240
8997
3459
2744
931
565
464
405
605
488
213
51717
28936
16621
13258
7062
3298
3137
1101
707
545
455
779
500
240
51666
29408
16391
12806
6214
2727
2495
889
551
438
355
550
431
190
63488
38283
21561
14825
5824
2225
1842
585
397
273
223
336
237
125
39441
20095
11013
8721
4228
2033
1924
619
458
298
249
409
296
147
43828
21979
11472
8122
3743
1726
1524
553
319
248
205
307
231
111
37382
19656
11010
8316
3967
1636
1413
445
294
191
173
271
201
107
47855
25911
14039
10041
4511
1824
1517
513
311
269
242
373
301
153
59693
38593
22080
15444
5911
2081
1528
461
263
183
169
259
189
91
32682
17251
10144
8504
4243
1865
1615
510
338
237
173
324
245
127
42823
24861
14973
12481
6457
2851
2621
845
562
440
368
691
553
298
113477
62248
35064
27219
14517
6549
6507
2315
1691
1325
1264
2019
1888
955
48249
30518
18473
14554
6739
2727
2285
669
455
356
291
515
417
201
35536
20329
12179
10349
5242
2275
1927
679
445
343
314
500
391
166
37283
20449
11223
8592
4182
1851
1671
615
383
330
244
445
370
174
55807
29933
15011
9240
3385
1372
1171
369
227
175
131
203
169
101
59807
30130
16143
11293
4347
1670
1258
445
300
212
225
358
255
133
95748
55495
30280
19690
6975
2438
1728
557
328
215
192
288
198
107
48513
23387
12225
7487
2315
705
518
152
87
78
70
123
110
58
32728
14040
6378
3742
1050
383
265
85
40
17
15
42
22
15
5786
2507
1228
739
252
93
65
17
8
8
8
10
6
3
107315
206638
203342
203702
104408
45898
41270
13905
9388
7123
5940
8940
5980
2427
68257
26963
11023
6707
2223
860
640
210
180
83
100
190
117
67
64262
31353
16357
10168
3587
1165
928
332
222
178
160
245
182
85
69678
36163
19025
14340
7205
3590
3310
1248
873
733
663
1048
673
348
116580
49847
24747
17213
7940
3600
3460
1480
873
800
587
987
907
533
642473
403073
230667
166753
75780
32867
27793
9407
5787
4420
3580
5113
2580
880
206960
96295
47965
29985
10905
3875
2950
965
520
420
205
440
160
105
78495
40958
22763
14860
4962
1397
902
287
185
113
107
207
133
58
137460
100787
67453
58823
31137
14757
14523
5583
3877
2950
2490
3700
2297
867
284683
152417
105400
82867
40000
11300
9667
3400
2383
1633
1367
2467
1533
533
674767
356133
198250
137917
51867
18250
12700
3767
2267
2050
1450
2200
1500
467
101543
53383
29713
20933
8297
3227
2340
703
427
223
210
360
187
40
256933
128493
70853
56267
26187
11360
9653
3053
1960
1307
1320
1373
1080
413
87762
54488
32927
27187
14083
6843
6785
2368
1657
1255
1060
1738
1195
507
50853
27040
14673
12387
5993
3347
3020
1047
753
660
447
660
440
220
108860
59000
32267
23973
10733
5020
3887
1367
967
680
547
967
607
240
79893
42080
23687
17233
7567
3147
2413
747
473
447
333
387
333
133
301087
193860
120900
104367
56613
26980
26267
9100
5733
4140
3273
5187
3133
1120
132573
60533
30640
22240
11173
5573
5040
1867
1227
840
520
893
747
387
161100
87967
50487
38800
18400
8293
8187
2747
2027
1540
1253
1880
1393
587
347867
206447
122007
102827
58260
29680
29007
9600
6307
4793
4173
5793
3580
1480
113540
62713
36920
31793
16860
7680
7407
2407
1773
1120
987
1433
953
300
65947
35047
19547
16633
8333
4273
3787
1233
900
573
580
807
533
247
179720
102453
57667
45880
23920
10933
9813
2347
1400
853
747
1120
533
267
166093
85067
48547
37080
16533
6280
5813
2133
1187
747
973
1160
707
360
98427
46800
26853
24093
14307
7467
8280
3173
1867
1293
1240
1720
920
480
60853
31720
17307
13153
5933
2500
2187
647
480
393
227
333
227
127
39797
18277
9493
6430
2623
1297
1103
277
203
190
157
213
147
87
88740
44267
23380
16163
6057
2110
1713
500
303
257
193
257
197
133
200600
110780
59990
41950
16387
5873
4073
1150
800
570
473
900
703
243
292133
148613
82107
57000
23133
8840
6947
2147
1507
1067
893
1733
1200
427
93267
43520
20600
13480
4947
1827
1000
267
173
107
67
80
53
27
53423
24763
12263
8067
2930
1100
747
163
103
93
53
137
70
27
110
0.5 ‐ 16
121167
107062
903040
191987
130324
114785
8834
8686803
23637
45010
175607
188963
1697707
529807
150579
417437
211763
184751
202053
745513
122550
122622
129485
409485
108995
58766
53295
145031
145784
103281
97735
97588
54144
155707
226789
155380
257771
128115
124922
150099
89783
94257
84955
107707
146855
78130
110527
276083
126246
90510
87638
117193
126443
214133
95770
58807
10727
963850
117553
129138
158552
229020
1610293
401645
165368
445837
699117
1463117
221547
569840
239348
121320
248873
178740
860640
273867
384073
930340
285587
158193
437387
372320
236440
135960
80207
184137
444250
627320
179387
103913
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Incline
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Sampling
Date
2/7/07
2/7/07
2/10/07
3/7/07
3/17/07
3/22/07
4/5/07
4/26/07
5/1/07
5/9/07
5/11/07
5/17/07
5/21/07
7/5/07
7/5/07
8/6/07
8/6/07
9/6/07
9/7/07
10/3/07
11/8/07
11/11/07
12/6/07
1/14/08
2/4/08
2/12/08
3/6/08
3/13/08
4/4/08
4/14/08
4/28/08
5/1/08
5/5/08
5/8/08
5/14/08
5/17/08
5/17/08
5/20/08
5/22/08
5/28/08
6/2/08
6/19/08
7/10/08
8/6/08
9/5/08
10/4/08
10/10/08
11/6/08
12/5/08
1/22/09
2/5/09
3/6/09
3/20/09
4/9/09
4/20/09
4/23/09
5/2/09
5/3/09
5/6/09
5/8/09
5/11/09
5/16/09
5/18/09
5/21/09
5/22/09
5/26/09
6/5/09
6/18/09
7/9/09
8/4/09
9/4/09
10/7/09
10/13/09
11/5/09
12/4/09
2/4/10
3/2/10
4/4/02
4/4/02
4/10/02
4/10/02
4/22/02
5/7/02
5/17/02
6/3/02
7/1/02
8/14/02
9/13/02
10/9/02
11/7/02
Flow
(cfs)
4.20
4.20
5.80
5.20
10.00
6.70
6.90
8.20
7.20
6.50
6.70
5.60
5.20
2.10
1.70
1.70
1.50
1.50
1.70
2.00
2.40
3.80
2.70
3.00
10.00
3.50
4.00
6.00
7.00
11.00
12.00
9.60
10.00
11.00
10.00
12.00
12.00
11.00
9.30
8.80
7.20
4.50
2.60
1.90
1.50
3.00
2.10
2.70
2.40
4.40
3.10
3.40
6.10
5.50
9.80
12.00
9.80
12.00
12.00
12.00
12.00
11.00
11.00
10.00
9.70
8.30
7.10
4.90
2.90
2.00
1.60
2.30
9.60
2.30
2.80
3.00
3.80
1.60
1.60
1.80
1.80
3.00
0.49
0.28
0.16
0.03
0.05
0.10
0.10
0.30
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
118990
64913
35867
22673
7027
2140
1613
487
310
203
203
373
277
150
61647
28200
13133
7573
2160
727
583
147
113
70
110
137
113
70
200093
113140
61567
40200
13113
3887
2527
770
450
347
283
503
400
230
59193
26877
13207
8873
3993
1697
1290
350
190
157
130
233
173
70
86960
44233
24347
19527
10220
4987
4340
1153
773
553
413
673
387
273
82373
39843
21857
14980
5467
1727
1377
437
280
207
203
277
163
93
55073
26323
13207
8887
3533
1473
1120
390
217
133
100
227
103
53
103724
71880
44375
32412
12809
4369
3056
917
544
392
317
463
400
209
49737
27596
14207
8705
2647
963
743
260
163
144
114
209
163
65
57498
36027
19647
12208
3567
1032
637
183
129
105
77
150
99
61
50946
30852
16744
10665
3734
1242
995
306
204
157
155
236
170
93
77640
44535
23784
14942
4743
1517
1224
379
286
236
210
323
277
182
2084
5472
5949
5336
2280
730
503
142
84
61
48
73
48
21
18538
8575
4163
2754
1159
454
350
111
85
50
47
72
62
24
53967
27763
14600
8769
2405
694
432
119
91
63
69
92
82
39
2165
838
381
245
100
32
27
8
5
4
3
6
5
3
7421
3187
1382
902
379
139
107
35
25
21
18
32
21
8
7636
3521
1593
1095
446
167
145
53
37
33
28
45
25
8
2250
1044
564
419
195
79
80
27
20
16
16
25
19
9
6399
2833
1352
993
454
173
155
50
37
30
27
40
26
8
7311
3251
1548
1084
451
168
135
42
30
24
23
35
23
9
36980
13881
6179
4055
1912
824
820
284
169
120
89
130
63
16
7330
3678
1652
1025
407
140
121
38
27
23
17
25
19
6
8036
4657
2514
1857
752
247
195
62
44
35
31
46
24
7
23498
10270
5125
3916
1830
762
627
222
119
82
56
68
25
9
48237
21598
10925
8369
3614
1369
1126
343
246
171
134
168
75
14
16921
6375
2985
2113
1085
524
541
191
101
84
71
77
32
11
42809
17528
8437
6384
3470
1614
1729
529
386
298
200
251
133
41
27938
12196
6890
6306
4227
2287
2446
803
527
413
292
342
141
39
48657
28687
17576
16775
11131
5757
5839
1980
1197
882
679
786
341
89
29427
17679
12201
13398
9934
5558
5809
1938
1257
889
642
839
336
103
10080
4671
2510
2126
1237
646
689
232
168
127
88
120
56
16
1795
924
564
523
342
166
180
60
38
28
20
26
11
3
19086
8156
4392
3971
2393
1099
1087
374
236
154
116
148
73
22
46499
24355
11961
7571
2950
1190
877
313
224
191
175
312
247
121
80034
44770
22791
14819
6364
2588
2208
725
559
527
449
741
555
241
101272
59618
31167
20679
8656
3370
2935
1114
949
792
723
1363
1069
541
41449
25225
13982
10373
4730
1769
1336
450
374
267
233
437
340
164
47342
25985
13357
8997
4155
1731
1290
452
319
253
258
419
344
175
43316
23777
12131
8507
3824
1567
1206
448
310
285
267
407
332
172
50080
28591
14140
8627
3383
1256
907
323
282
239
219
395
294
140
57373
33929
16788
9977
3681
1259
980
353
267
241
198
315
273
133
55791
32498
16357
9926
3601
1276
933
305
239
212
159
296
225
118
56115
34411
18419
11367
3792
1181
808
239
182
185
141
230
168
106
53647
28133
13871
8547
3576
1430
1232
435
354
298
251
469
344
181
118346
72603
40586
28708
10997
3290
2218
767
565
604
527
1016
920
506
36136
18126
8206
4963
1845
677
577
196
159
134
124
193
147
80
36026
18014
8033
4590
1642
601
430
126
111
63
72
109
71
37
31078
16486
7522
4338
1680
710
631
232
191
172
161
273
206
106
149850
85805
45895
35410
19324
8645
6974
2404
1900
1496
1237
2176
1678
849
55565
30125
13588
7685
2474
805
580
222
144
117
115
188
141
83
14665
6992
3408
2305
976
374
271
92
66
48
39
68
50
23
77073
45280
23115
15429
7627
3515
2988
1205
981
858
832
1371
1061
547
34274
18872
9024
6159
2926
1299
1113
398
305
268
249
441
374
199
106033
57869
29375
22108
12952
6702
6617
2596
2363
2027
1902
3092
2482
1204
48298
26877
14054
10466
5541
2608
2368
833
767
594
575
932
741
368
21145
9579
5016
4080
2354
1198
1192
456
410
330
304
535
426
232
48604
33109
23659
25319
18091
9998
10026
4068
3278
2936
2666
4506
3305
1727
32196
16339
8185
5918
2930
1334
1187
457
340
326
240
391
319
161
26560
14114
8443
8054
5587
3212
3142
1288
986
789
724
1233
968
429
55119
31216
16230
11947
6136
2948
2799
1064
1002
786
781
1329
1075
537
53548
35011
19651
16120
10283
5800
5933
2391
1901
1682
1511
2485
1819
809
50100
29598
16507
12537
6246
2517
2188
812
622
544
522
853
653
316
39431
20820
10900
7224
2945
1071
800
263
239
172
136
293
226
107
66890
36666
18926
12636
5370
1853
1443
512
390
278
271
441
339
173
26660
15308
8943
7480
4206
1845
1596
600
488
405
332
545
416
205
25085
11640
5741
4305
2388
1145
995
335
254
216
184
345
247
129
34218
21803
11748
7908
3309
1280
984
339
290
238
218
348
305
158
45679
27199
15073
10356
3944
1340
966
294
240
211
197
279
229
119
37202
20856
11425
9433
5364
2610
2388
916
716
641
550
958
743
373
48115
28425
16099
12142
5446
2248
2021
695
556
503
403
701
540
255
36960
18551
9277
6547
3063
1275
1013
334
246
227
154
294
228
113
254018
168965
105668
99690
67589
35557
35326
14397
12341
11150
10966
20113
18063
9402
30210
15429
7421
4717
2016
729
506
142
109
76
67
105
69
30
38544
18195
7958
4717
1840
663
440
129
99
64
54
85
51
30
44956
23265
11333
7414
3154
1104
815
222
186
143
119
197
152
83
43406
22884
11941
9297
4621
1988
1426
426
318
252
209
330
245
129
24784
12997
7564
5396
2309
801
575
163
112
99
105
172
155
128
25698
13919
8396
6056
2648
929
708
256
156
118
128
276
260
179
15008
7861
4102
3086
1388
473
350
129
71
54
53
111
125
67
13421
7093
3908
2971
1298
487
366
116
83
65
52
108
112
71
7326
3560
1837
1239
557
243
207
65
44
30
36
56
54
34
10072
5646
3222
2567
1299
564
465
158
113
70
76
122
112
68
5760
2917
1597
1157
547
234
212
71
55
43
46
85
68
46
4191
2343
1311
975
442
190
146
47
30
24
21
40
36
26
4496
2178
1169
848
417
207
179
63
36
29
34
59
51
33
4387
2150
1187
925
398
171
152
52
33
26
25
51
46
27
3015
1409
729
539
271
134
130
54
35
32
32
58
52
35
2611
1388
806
676
356
186
183
76
49
43
42
74
72
41
2768
1393
746
615
319
137
108
39
23
19
17
32
29
17
111
0.5 ‐ 16
255077
114713
437280
116363
198567
169190
110787
275659
105651
131359
116407
170097
22810
36421
109146
3819
13667
14825
4754
12568
14124
65507
14503
18502
46598
96375
31100
83769
64809
140287
99906
22748
4678
41284
96866
177131
233708
100964
104902
96377
108736
125634
121819
127240
112586
281146
71483
69889
63680
362794
111749
29356
181335
75701
256118
114655
47026
189565
70161
75100
132433
158135
123696
84520
146017
68826
52879
82987
106008
93800
117895
78170
853844
61596
72840
93060
97344
55232
59549
32809
30081
15253
24486
12793
9797
9765
9604
6490
6562
6245
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Sampling
Date
1/8/03
2/7/03
3/4/03
3/4/03
4/3/03
4/8/03
4/9/03
4/22/03
5/1/03
5/12/03
5/14/03
5/17/03
5/20/03
5/27/03
6/6/03
6/10/03
7/9/03
8/5/03
9/4/03
10/7/03
11/5/03
12/4/03
1/7/04
2/5/04
3/5/04
3/9/04
3/16/04
3/23/04
3/29/04
4/8/04
4/15/04
4/21/04
4/27/04
5/5/04
5/21/04
6/3/04
6/15/04
8/5/05
9/13/05
10/3/05
11/4/05
12/1/05
12/5/05
12/31/05
1/3/06
2/6/06
2/27/06
3/6/06
4/3/06
4/20/06
4/24/06
4/25/06
4/28/06
5/1/06
5/5/06
5/8/06
5/10/06
5/12/06
5/15/06
5/18/06
5/25/06
7/5/06
8/1/06
10/3/06
11/7/06
12/5/06
1/4/07
2/6/07
3/6/07
3/16/07
3/21/07
4/6/07
4/10/07
5/1/07
5/16/07
7/2/07
8/7/07
9/9/07
10/5/07
11/6/07
12/5/07
1/9/08
2/4/08
3/3/08
4/1/08
4/19/08
4/28/08
5/2/08
5/5/08
5/9/08
Flow
(cfs)
0.10
0.20
0.20
0.20
0.50
0.40
0.50
0.30
0.40
1.20
1.90
1.30
3.00
0.80
0.20
0.40
0.10
0.10
0.10
0.09
0.20
0.28
0.16
0.18
0.37
0.60
1.20
1.80
1.10
0.86
0.66
0.72
1.40
0.45
0.31
0.15
0.10
0.06
0.16
0.19
0.19
0.60
0.79
4.20
0.79
0.45
0.93
0.40
0.86
0.79
1.20
3.10
3.30
3.30
3.80
3.60
5.20
4.80
5.00
4.00
3.10
0.36
0.36
0.40
0.54
0.54
0.61
0.54
0.54
0.82
0.42
1.20
0.98
0.82
0.48
0.11
0.04
0.06
0.17
0.24
0.28
0.32
0.32
0.24
0.28
0.65
1.40
0.53
0.57
0.56
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
1902
908
489
405
208
109
94
30
18
16
14
28
24
15
2507
1270
684
560
319
150
142
58
38
31
32
57
48
29
2112
1006
543
467
235
119
89
37
25
26
12
35
33
20
2112
1006
543
467
235
119
89
37
25
26
12
35
33
20
4830
2139
1113
799
364
163
123
36
30
17
16
37
26
14
6681
3367
1970
1519
825
374
388
131
100
74
65
111
122
59
7447
3785
2162
1771
969
424
428
157
104
77
86
133
133
67
4224
1861
987
735
367
147
163
55
42
30
29
56
47
24
5875
2748
1400
1047
504
232
187
64
35
26
33
48
44
29
15577
8763
5414
4995
3253
1913
2171
930
690
567
548
998
899
486
14945
8355
4736
3974
2190
1096
1085
399
297
240
207
418
349
188
13217
5849
2814
1914
811
333
268
73
58
42
38
64
58
37
20591
10103
5501
4338
2319
1123
1213
460
331
260
235
397
387
193
6771
3469
1844
1339
555
225
201
61
43
33
27
42
30
18
4782
2370
1118
744
326
142
113
40
26
18
16
30
22
15
4746
2189
1002
626
282
125
111
38
23
18
18
31
28
19
3056
1361
681
472
210
86
76
24
17
12
12
18
18
10
2599
1216
600
404
184
73
64
21
15
13
11
23
23
15
4603
2293
1190
701
244
93
81
27
24
16
18
26
23
12
3815
1569
697
518
212
100
62
30
21
15
13
23
26
17
3890
1587
734
463
195
73
64
20
16
10
13
20
16
10
3334
1524
826
500
200
83
78
24
15
11
10
22
18
14
3959
1899
1055
805
340
168
149
53
35
32
28
56
51
20
3581
1779
943
756
376
161
170
56
46
38
26
63
49
19
3645
1740
1017
831
452
212
215
95
64
54
52
91
82
39
6259
2915
1550
1236
637
327
306
109
88
66
66
124
103
47
9477
4148
2094
1467
737
334
331
119
72
51
67
97
85
60
10925
4906
2485
1806
835
376
263
102
65
59
34
65
63
37
7099
3192
1592
1165
555
245
218
73
51
39
39
77
57
35
8955
4156
1984
1300
600
253
179
66
47
41
30
69
50
31
8235
3788
1990
1422
612
243
221
82
52
39
38
70
67
39
18572
9759
5469
3856
1652
620
512
175
109
99
86
153
132
50
9917
4889
2703
2009
877
399
361
135
85
65
60
134
117
79
7921
3733
1822
1445
763
363
401
135
104
95
89
144
123
83
31245
15455
8495
6124
2573
955
778
321
226
154
122
194
93
56
6578
3185
1645
1169
522
215
185
68
50
37
31
59
46
32
6297
3238
1766
1219
486
204
159
47
33
29
23
36
42
22
3322
1343
575
383
197
92
93
20
20
12
12
22
25
5
7980
4275
2542
1885
938
510
383
133
90
60
62
95
67
35
6313
3030
1655
1207
537
228
195
63
33
48
42
70
63
22
2695
1070
468
298
153
47
57
22
15
15
5
23
10
7
78353
35780
19420
14953
7700
3260
3360
1393
1007
753
613
1320
1087
580
8355
3743
2065
1405
573
233
193
70
60
30
30
60
43
20
134475
58658
29008
19792
7400
2625
1708
692
317
392
400
517
358
208
12942
4758
2137
1297
560
217
197
62
47
30
28
38
28
22
18340
8753
4753
3547
1580
483
403
153
87
70
53
83
43
17
42117
20350
10650
8583
4300
2417
1867
600
667
467
633
883
717
300
50305
21992
11113
5995
2167
713
532
153
93
78
67
97
63
27
23560
10250
5257
3933
2307
1313
1143
437
277
150
203
273
260
170
9830
4870
2823
2157
987
463
470
97
73
63
30
50
37
37
7467
3247
1523
1213
570
257
187
63
70
47
27
60
40
30
46840
22600
11977
9963
5627
2843
3030
1220
833
613
557
1037
880
413
50143
25577
13780
11170
6583
3453
3597
1550
1057
893
773
1187
847
440
43713
20927
10980
7400
3627
1360
1080
353
240
160
153
280
200
73
45907
24633
13480
9267
3967
1493
1253
387
293
187
147
293
213
87
40813
20227
10720
8707
5027
2313
2253
847
487
367
360
460
393
120
52687
26567
14493
10700
5920
2767
2773
887
780
560
413
647
487
340
115820
62893
35220
27140
12473
5147
4547
1587
1113
773
640
1073
900
373
35573
17147
8513
6793
2860
1227
1013
387
260
200
127
307
207
47
53447
24733
12387
8887
3940
1513
1233
273
300
153
220
247
147
80
59900
31307
15927
10847
4327
1447
900
280
73
120
100
73
80
13
11573
5567
2980
2043
777
380
263
97
60
33
47
70
37
23
14143
7803
4140
3057
1227
553
400
113
110
60
40
67
50
0
38920
20320
11633
9200
3787
1387
1227
313
247
147
107
200
187
73
99573
57067
36280
30813
15373
6853
4227
973
600
573
307
173
120
53
5684
2623
1242
701
285
103
63
25
15
17
14
24
19
11
22047
13700
7700
4193
1087
280
167
100
40
27
27
27
33
7
12757
5977
3103
2243
940
337
267
80
60
43
27
53
60
37
11497
6087
3620
2987
1453
613
430
143
70
60
40
50
90
23
20233
10653
6080
5380
3327
1627
1687
633
453
240
227
340
213
60
18093
10333
6887
5393
2473
847
513
153
67
87
53
67
27
27
7437
3645
2063
1696
920
484
512
192
120
122
120
165
208
92
5194
2454
1239
954
555
241
226
91
48
40
36
45
43
22
5178
2471
1352
1044
567
284
308
100
60
54
45
73
82
33
4209
1961
977
716
356
170
179
72
51
46
41
73
57
35
2922
1499
767
553
256
110
103
34
25
21
19
33
30
19
592
277
160
150
80
37
40
15
12
9
8
16
12
4
1215
575
349
313
142
53
53
18
14
10
10
17
11
4
553
230
123
103
55
26
31
14
11
10
9
21
16
8
432
176
96
78
42
17
19
6
5
4
4
8
6
3
651
247
129
96
53
27
29
12
9
8
7
12
9
5
547
231
135
118
70
35
42
16
13
11
11
19
15
7
847
419
246
232
152
84
103
42
31
25
22
36
27
10
586
263
151
130
80
39
45
17
14
12
12
19
15
7
865
339
187
166
103
50
50
16
11
9
8
14
13
7
1885
935
512
404
205
96
106
46
36
33
32
56
42
17
1626
691
357
308
180
91
96
39
30
24
23
40
32
15
984
409
214
172
92
42
44
16
13
12
11
22
18
9
1367
641
365
316
179
80
82
31
26
23
21
43
36
17
2143
927
469
340
154
63
59
20
15
11
12
20
18
9
112
0.5 ‐ 16
4245
5895
4738
4738
9692
15728
17676
8744
12243
46719
38289
25539
47259
14640
9748
9236
6043
5248
9339
7101
7101
6646
8631
8044
8549
13785
19079
21984
14402
17729
16859
41194
21751
17137
66735
13789
13579
6115
19020
13485
4878
169000
16862
256342
22340
38350
94250
93368
49363
21950
14770
108020
120610
90473
101520
92973
119680
269327
74613
107480
125380
23927
31763
87673
252933
10815
49427
25947
27140
51093
44993
17681
11167
11617
8909
6371
1409
2779
1203
892
1289
1263
2266
1382
1830
4386
3536
2049
3210
4250
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Logan House
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Sampling
Date
5/14/08
5/16/08
5/22/08
5/29/08
6/5/08
6/19/08
7/9/08
8/5/08
9/4/08
10/4/08
10/8/08
11/3/08
12/4/08
1/5/09
1/23/09
2/9/09
3/3/09
3/19/09
4/6/09
4/20/09
4/22/09
5/2/09
5/3/09
5/7/09
5/11/09
5/17/09
5/18/09
6/1/09
7/6/09
8/6/09
9/1/09
10/8/09
11/2/09
12/3/09
1/12/10
2/2/10
3/4/10
4/5/02
4/8/02
4/22/02
4/24/02
4/24/02
5/6/02
5/13/02
5/16/02
5/17/02
5/24/02
5/29/02
5/30/02
6/3/02
7/1/02
7/17/02
7/17/02
8/13/02
10/8/02
11/4/02
11/8/02
12/2/02
1/7/03
2/6/03
3/3/03
3/26/03
4/2/03
4/7/03
4/22/03
5/1/03
5/14/03
5/15/03
5/19/03
5/22/03
5/22/03
5/27/03
6/3/03
6/9/03
7/10/03
8/4/03
9/5/03
10/6/03
11/7/03
12/2/03
1/5/04
2/3/04
3/2/04
3/9/04
3/16/04
3/23/04
3/30/04
4/5/04
4/12/04
4/12/04
Flow
(cfs)
0.47
0.53
0.29
0.34
0.26
0.08
0.05
0.03
0.03
0.07
0.04
0.14
0.12
0.22
0.50
0.21
0.19
0.19
0.23
0.57
0.65
0.57
0.67
0.35
0.18
0.11
0.10
0.05
0.06
0.07
0.06
0.05
0.07
0.09
0.12
0.08
0.07
9.30
9.70
7.80
8.40
9.00
11.00
17.00
24.00
30.00
15.00
28.00
24.00
24.00
3.80
3.40
3.00
0.96
1.00
1.40
5.20
2.50
3.00
4.30
3.10
6.20
4.50
3.70
5.40
5.20
10.00
10.00
13.00
18.00
25.00
32.00
41.00
34.00
3.00
2.00
1.40
1.20
1.80
2.00
2.50
2.60
2.80
7.20
6.60
9.40
7.20
9.80
11.00
11.00
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
6898
3738
2022
1510
760
354
300
109
94
83
65
122
91
44
6037
3077
1613
1260
714
347
299
117
103
86
86
140
105
56
2894
1548
738
500
244
109
87
31
24
20
17
28
24
14
2451
1290
667
478
259
114
99
35
27
24
20
35
30
17
2282
1207
622
466
235
99
79
26
18
15
13
21
19
10
2515
1240
594
405
191
79
62
20
15
13
10
18
13
7
2857
1534
758
495
218
89
68
23
17
14
12
19
16
9
2383
1512
884
665
331
136
106
36
27
21
17
28
24
13
9233
6057
3496
2501
1133
409
306
91
74
56
50
81
56
26
2227
1300
747
574
301
132
111
43
32
27
25
47
47
29
2176
1114
522
312
147
60
51
18
13
12
10
17
15
10
3288
1801
838
473
202
83
68
25
19
16
15
25
21
12
2391
1273
633
411
176
59
46
14
10
8
7
11
9
5
2230
1221
624
435
203
83
61
20
14
12
10
15
12
6
13144
6788
3542
2530
1323
550
471
178
157
146
141
241
220
118
1234
680
383
305
170
80
68
27
20
19
17
30
25
13
3722
2127
1114
787
372
155
138
50
40
36
30
56
46
28
3015
1855
983
687
312
120
93
31
23
18
16
26
23
14
2340
1261
661
422
173
70
59
23
18
15
15
21
17
9
17392
10428
6024
5009
2758
1393
1446
599
546
491
500
830
760
416
13170
7002
3800
2919
1541
757
775
328
302
251
232
462
368
212
3278
1492
727
457
200
82
71
33
28
24
24
45
44
25
4607
2265
1182
831
386
166
161
68
56
56
55
95
97
59
3709
1877
988
643
285
124
121
49
45
39
34
71
63
39
3042
1574
778
566
267
130
131
47
44
39
43
63
62
34
2048
1092
568
417
222
100
79
27
21
16
16
24
18
12
4280
2210
1150
819
413
191
172
62
50
43
38
70
69
31
1989
1078
528
326
159
73
65
23
18
14
13
20
18
9
2101
1074
505
340
162
70
57
21
16
13
12
20
16
11
2713
1631
913
684
354
153
124
39
32
26
24
34
27
14
1952
1074
544
349
164
74
61
24
18
17
13
24
17
11
1640
828
422
312
168
76
66
23
19
16
14
24
19
10
2718
1566
870
640
282
100
67
20
14
10
9
13
9
5
5808
3372
1890
1450
649
235
158
55
36
28
22
41
30
15
2449
1455
755
520
257
105
86
29
21
17
16
24
17
9
1545
949
510
347
175
69
56
19
15
11
9
16
12
5
1637
971
534
378
165
62
48
15
12
9
8
14
11
6
64069
39183
23113
15914
5963
1972
1199
338
206
153
118
220
156
89
63271
38984
21482
14338
5072
1575
1023
311
187
151
137
258
215
146
33711
22064
12577
8656
2903
886
654
218
136
111
92
144
111
55
29042
18475
10755
7629
2755
937
687
224
128
98
76
126
83
38
37492
20264
10921
7279
2418
728
494
181
99
71
63
103
80
46
52423
32201
18353
12893
4798
1631
994
284
177
122
113
202
169
98
71028
44180
26768
21308
9120
3316
2552
771
485
364
361
696
568
291
71171
50878
33004
26400
12026
4678
3343
1128
718
578
566
1054
875
567
129957
116220
83089
73091
36108
15823
13249
4576
3104
2423
2273
4088
3475
1995
16511
12018
7641
6199
2785
1125
881
311
182
132
120
207
156
84
72599
54932
36503
30400
13820
5483
3610
1082
623
513
507
723
609
297
27001
16373
9844
8400
4177
1683
1291
446
279
189
165
289
213
125
31386
18624
11067
8534
3712
1455
1133
330
203
128
107
155
93
40
1092007 644123
405387
356840
190227
84333
72673
23430
14703
10230
8653
13933
9827
5170
118937
93443
81277
98263
62167
26683
21270
6083
3603
2690
2233
3167
2250
1087
1712373 1162933 799253
822347
568587 307787 280480
99413
59520
48373
36427
61813
38187
17600
31439
17874
9858
7178
2766
978
733
212
134
99
87
144
105
62
23736
13289
7015
4798
1751
620
409
89
57
43
36
46
35
20
5713
3382
2261
1698
754
287
221
67
40
32
26
44
27
14
105227
78743
63820
71527
50150
28017
25943
9453
5720
4617
4190
6783
5337
2630
6344
3811
2490
2244
1255
548
421
115
72
52
40
66
45
19
7921
4805
3321
3433
2148
1011
741
203
111
72
51
80
56
27
52953
31076
16905
12417
5704
2355
1889
585
373
306
271
465
365
207
56443
32895
17185
10403
3284
959
567
125
73
57
48
60
48
37
671200
376400
203107
135067
51653
20573
18107
6120
4120
3573
2520
4427
3747
1533
79807
43581
22449
13983
4293
1304
823
220
145
87
104
132
120
76
51779
28169
14301
8865
2730
837
572
162
113
83
71
104
77
37
54215
28830
14526
9525
3704
1407
1074
278
177
140
113
167
133
67
83884
41656
20616
12407
4187
1509
977
303
188
155
108
187
109
71
82872
53077
34395
33233
22011
12307
13228
5376
3749
3091
2764
4829
3909
2023
64985
32575
16645
10887
4336
1688
1455
505
340
240
200
359
289
163
31860
17079
9330
7531
3930
1877
1567
515
308
253
200
323
232
119
40679
23094
13217
10332
5293
2358
2211
742
501
402
359
551
453
229
231533
156113
100280
92020
55770
29647
30337
11087
7887
6243
5447
8697
6427
2900
70279
38319
22075
17541
9305
4400
4184
1580
1095
905
860
1549
1301
763
39363
21219
11691
9246
4577
2130
2024
761
523
435
363
619
472
259
24715
14444
8527
6890
3386
1492
1407
499
344
269
224
341
234
124
23350
12197
6352
4154
1535
542
437
117
66
58
39
62
40
24
24890
12736
6382
4254
1704
662
522
156
92
66
58
108
85
40
53471
28331
14428
9522
3787
1681
1626
594
421
339
295
427
335
136
26367
14696
8080
6209
3024
1267
984
295
179
113
94
141
84
43
27476
17054
9742
6830
2467
790
613
175
113
81
58
68
49
16
16969
8441
4364
3015
1334
506
386
102
52
34
35
40
20
7
25254
13461
7067
4979
2077
763
541
164
91
61
46
81
48
24
52909
27665
13616
8312
2600
832
615
181
122
87
59
105
75
32
35575
17295
8971
6497
2724
973
623
167
89
65
55
76
48
25
63961
35471
17845
10919
3908
1408
1035
283
195
135
105
171
140
69
43385
22129
11774
9891
5563
2785
2629
881
586
439
354
573
387
167
45319
23131
12249
9397
5069
2447
2453
774
553
397
345
548
383
197
41179
21076
11128
8389
3677
1453
1078
317
184
171
127
207
143
75
26303
13133
7049
5903
3155
1577
1425
465
340
258
189
317
264
135
36519
19751
11033
8173
3673
1464
1253
432
311
225
189
312
216
114
36647
19903
11189
8823
4448
1893
1823
631
437
329
288
473
380
204
113
0.5 ‐ 16
16146
13983
6265
5530
5102
5173
6119
6172
23543
5612
4469
6875
5049
4940
29429
3057
8673
7202
5094
48177
31907
6503
10026
8047
6785
4648
9566
4324
4408
6753
4329
3627
6316
13773
5749
3733
3863
152603
147002
82264
71015
80193
124359
181517
206418
487476
48268
221403
70351
76927
2926367
522067
5997493
71608
51923
14552
459527
17501
23954
125663
122147
1500613
167048
107863
114289
166285
274841
134504
75005
100191
741487
173393
93423
62773
48948
51715
115256
61533
65515
35298
54631
107177
73157
135575
101376
103065
89130
60379
83550
87265
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Sampling
Date
4/21/04
4/28/04
4/28/04
5/4/04
5/6/04
5/20/04
6/1/04
6/16/04
9/12/05
11/1/05
11/1/05
11/1/05
12/1/05
12/8/05
12/31/05
1/3/06
2/6/06
2/27/06
2/27/06
3/8/06
4/4/06
4/21/06
4/27/06
5/2/06
5/3/06
5/3/06
5/10/06
5/10/06
5/15/06
5/18/06
5/25/06
6/2/06
6/5/06
6/5/06
6/12/06
6/19/06
6/28/06
7/3/06
8/3/06
10/5/06
11/3/06
11/9/06
12/8/06
1/8/07
2/7/07
3/7/07
3/17/07
3/22/07
4/5/07
4/27/07
5/1/07
5/9/07
5/11/07
5/17/07
5/21/07
7/5/07
8/6/07
9/6/07
10/3/07
11/8/07
11/11/07
12/6/07
1/14/08
2/4/08
2/12/08
3/6/08
4/4/08
4/14/08
4/18/08
5/1/08
5/5/08
5/8/08
5/14/08
5/16/08
5/17/08
5/17/08
5/20/08
5/22/08
5/28/08
6/2/08
6/19/08
6/19/08
7/10/08
8/6/08
8/7/08
9/5/08
10/4/08
10/10/08
11/6/08
12/5/08
Flow
(cfs)
6.50
12.00
12.00
21.00
18.00
12.00
12.00
6.90
1.70
2.90
2.90
2.90
4.90
3.50
27.00
6.40
4.90
10.00
13.00
5.10
6.10
7.00
19.00
29.00
22.00
25.00
30.00
29.00
53.00
29.00
46.00
84.00
93.00
93.00
76.00
76.00
45.00
38.00
6.80
3.60
9.80
4.60
4.00
4.60
4.40
3.30
6.20
4.00
5.70
10.00
9.00
9.80
16.00
19.00
5.50
1.10
0.88
0.73
1.10
1.30
1.70
1.60
2.20
45.00
2.40
2.20
3.60
6.10
5.90
8.00
14.00
13.00
15.00
30.00
29.00
29.00
26.00
19.00
12.00
14.00
4.20
4.20
1.60
1.10
1.10
0.76
1.30
1.10
2.00
1.70
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
48228
26936
14094
9240
3365
1208
951
282
165
147
101
171
120
55
33908
18902
10953
9043
4925
2338
2264
811
526
395
338
592
431
240
38947
23505
14483
12804
7243
3749
3610
1263
877
729
627
1072
822
397
162890
98663
63957
58560
36713
20630
22287
8757
6420
5300
4777
8150
6267
3120
41940
25225
15184
12605
6097
2657
2496
856
575
423
371
609
427
229
22668
12935
7967
6875
3783
1788
1666
583
389
284
244
385
293
143
25881
14229
8305
6876
3199
1379
1361
425
262
207
167
273
210
81
22222
12380
6320
3533
1311
554
458
143
86
53
48
74
48
26
42395
20993
10928
7535
3325
1357
1117
370
217
155
103
185
83
42
22793
8868
3932
2280
837
300
238
63
42
23
20
35
20
0
19570
7768
3423
1910
627
202
122
38
17
13
8
7
7
5
8563
3388
1583
1092
438
140
97
33
10
13
10
23
8
7
220120
116387
64373
48753
20460
8020
5867
1993
1300
1087
840
1213
800
307
25927
11052
4907
2828
898
340
243
102
77
38
42
72
53
25
450150
286135
164315
126610
61805
27550
25320
8105
5095
3820
2775
3745
1980
535
44872
18853
8245
4547
1452
527
425
132
65
45
42
45
43
15
135560
63493
30363
16473
3790
897
570
133
47
77
47
120
90
47
620300
323133
195050
145233
58800
24667
20550
6650
4283
3650
3033
4183
2517
1117
447117
215367
108167
71733
27433
9617
8067
3033
1950
1400
1217
2000
1133
450
135840
69360
35100
22367
7500
2480
1957
560
370
227
260
367
330
130
220380
105953
52673
32987
12160
4967
3993
1173
713
587
327
500
320
87
25003
11528
5352
3168
1145
400
252
50
47
38
23
45
23
12
330773
189373
105340
75207
36133
16293
14960
5207
3960
3113
2653
4760
3247
1667
22733
10807
5600
4260
1887
887
767
240
180
160
133
207
160
60
44280
21247
11667
8300
3227
1407
907
247
180
167
120
100
140
33
50733
24273
13127
10127
4907
2167
1707
653
313
280
140
333
273
147
99980
50327
28607
20660
10527
4813
4153
1360
1027
747
560
793
640
327
39107
17947
8293
5620
2353
887
927
253
167
173
113
200
167
67
98980
52667
28953
22067
10607
4947
4200
1413
1073
893
680
1013
747
253
147607
77093
41827
31780
16247
7313
6840
2293
1300
1033
833
1153
880
320
72347
38907
22307
16947
8160
3227
3013
940
587
360
347
527
440
147
127667
70147
42373
34680
19867
9787
10027
3080
2440
1560
1653
2547
1627
587
100800
54120
31067
24947
13013
6320
5387
1600
1107
1067
800
920
947
307
208067
116520
69733
59853
32733
15333
15160
5120
3707
2813
2387
3040
2360
813
101000
53267
31907
27200
15240
6133
5773
1813
1107
787
493
973
693
187
105333
58427
34107
27813
13800
5920
5093
1493
833
833
553
747
460
227
201387
119493
68427
51200
19333
7747
6933
2707
2240
1627
1320
1440
813
253
49813
26247
15007
12400
6680
2753
2593
740
487
393
353
360
233
213
34557
15813
7357
4953
1933
680
667
263
137
113
110
137
73
20
107967
45203
22210
14553
5333
1500
1207
317
213
137
130
193
110
43
212920
107267
55293
39360
15320
5533
4480
1440
907
693
920
1200
867
520
91040
46720
29320
23147
8787
2453
1400
373
240
147
120
107
67
80
25333
10457
4687
3030
1203
400
420
130
87
60
60
57
17
17
53507
25193
13060
6893
1480
593
360
127
53
67
40
40
33
47
43997
21190
10317
6513
2967
1093
900
227
193
97
123
127
57
43
68773
37350
22147
16900
5613
1337
760
173
110
100
97
143
87
53
69447
34593
17367
13120
6867
3120
2993
1000
553
407
347
500
347
80
34513
15423
7397
4450
1793
677
463
153
83
90
70
147
73
23
22742
10258
4945
3374
1451
545
408
139
100
76
61
98
75
41
66004
37472
21061
15476
7296
3325
2990
1018
673
547
527
771
592
282
29990
15448
8043
5609
2640
1141
1092
348
236
186
156
239
172
73
31373
16261
8476
6137
2846
1199
1083
332
202
158
129
181
138
60
42126
26302
15390
12160
6028
2722
2501
934
633
466
413
695
504
211
98899
66134
39405
31312
16021
7443
7767
2905
2065
1639
1372
2443
1714
790
4571
4097
2531
1696
786
395
367
117
80
61
53
80
60
31
29018
12805
5905
3561
1280
450
362
123
72
71
64
98
71
26
2708
994
428
277
120
44
37
12
8
7
5
9
6
3
2548
880
370
239
103
36
31
10
7
6
5
8
7
4
2132
671
280
178
73
27
24
9
7
6
6
11
11
5
2309
938
439
297
122
49
41
12
6
5
4
6
4
2
5276
2977
1358
886
318
95
65
18
13
8
6
11
8
4
2807
917
372
241
107
46
43
13
10
7
6
10
8
4
3896
1418
539
291
103
34
30
9
6
5
4
7
6
3
4370
1667
622
336
128
47
40
12
8
7
5
10
7
4
4971
2229
888
497
179
66
60
22
15
13
11
20
14
8
12083
4299
1649
948
346
135
116
40
27
19
16
18
12
1
14008
4681
1820
1121
461
195
176
47
32
23
20
25
11
3
16059
7126
3754
3085
1975
1052
1195
434
304
229
176
237
115
33
8013
3899
2255
2155
1457
792
839
281
189
142
95
123
51
17
8619
3779
2029
1826
1125
577
589
188
126
87
73
81
39
15
4314
2294
1107
759
352
136
102
27
18
13
10
15
12
8
9690
4840
2845
2649
1663
812
774
235
142
107
73
95
44
14
37330
20232
10780
7753
3614
1536
1131
373
308
204
182
258
176
81
161690
114285
71390
60581
35580
18403
17372
6651
5172
4482
3908
6235
4225
1847
81728
54176
31904
24223
11524
4852
3677
1224
904
820
609
947
591
241
142460
93194
54410
43493
23514
11517
10627
4084
3284
2904
2447
4021
2612
1149
42519
30546
19313
15738
7646
3164
2620
929
744
595
553
827
634
232
53310
32243
17907
13148
6123
2487
1954
657
454
372
306
426
304
148
27390
15632
8552
6354
3095
1221
1067
351
264
229
196
310
170
86
34713
21813
12746
9851
4693
1914
1545
486
405
370
354
548
341
110
25244
13152
6491
4370
1932
824
740
292
202
191
190
281
213
101
25244
13152
6491
4370
1932
824
740
292
202
191
190
281
213
101
20734
10082
4268
2229
724
224
191
58
39
30
21
34
26
12
56115
34411
18419
11367
3792
1181
808
239
182
185
141
230
168
106
22004
10680
4518
2333
709
213
153
53
46
38
35
62
69
38
20215
9426
3940
2228
830
322
232
67
53
38
29
42
28
11
63939
30849
14325
7480
2427
667
373
135
61
61
63
75
45
37
16282
7247
2878
1519
542
177
127
42
29
19
18
29
20
9
14905
7262
3257
1938
697
251
175
51
36
28
19
34
20
10
15741
6842
2484
1207
428
126
79
21
18
13
12
14
14
4
114
0.5 ‐ 16
105009
85426
109731
503370
109466
59860
62773
47230
88763
39452
33712
15400
491213
46578
1167405
79292
251660
1412050
898233
276717
436733
47075
791020
48020
91987
109033
224193
76207
228240
336200
168107
327453
242093
536827
246387
255413
484667
118060
66793
199073
446200
203920
45940
101447
87800
153590
150660
65333
44272
157751
65299
68516
110874
279119
14893
53879
4656
4250
3435
4232
11039
4587
6349
7260
8984
19707
22620
35741
20290
19136
9159
23968
83878
509973
217179
398568
125827
129690
64831
89778
54122
54122
38661
127240
40912
37449
120499
28928
28673
26998
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Third
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Sampling
Date
1/8/09
1/22/09
2/5/09
3/6/09
4/9/09
4/20/09
4/22/09
5/2/09
5/3/09
5/6/09
5/8/09
5/16/09
5/18/09
5/21/09
5/22/09
5/26/09
6/5/09
6/18/09
7/9/09
8/4/09
9/4/09
10/7/09
10/13/09
11/5/09
12/4/09
1/14/10
2/4/10
3/2/10
4/4/02
4/12/02
4/23/02
4/25/02
5/8/02
5/14/02
5/15/02
5/24/02
5/29/02
5/30/02
7/2/02
8/16/02
9/11/02
10/2/02
11/6/02
11/8/02
1/10/03
2/3/03
3/6/03
3/26/03
4/2/03
4/8/03
4/9/03
4/23/03
5/2/03
5/13/03
5/16/03
5/21/03
5/23/03
5/28/03
5/30/03
6/10/03
7/9/03
8/8/03
9/3/03
10/8/03
11/6/03
12/3/03
1/8/04
2/6/04
2/17/04
3/4/04
3/8/04
3/15/04
3/22/04
3/30/04
4/8/04
4/13/04
4/22/04
4/27/04
5/3/04
5/6/04
5/17/04
5/21/04
6/3/04
6/14/04
9/27/05
11/2/05
11/2/05
11/29/05
12/2/05
12/1/05
Flow
(cfs)
2.40
3.30
2.90
2.50
3.60
7.70
11.00
12.00
9.70
12.00
14.00
21.00
31.00
29.00
29.00
20.00
9.70
4.30
2.00
1.40
1.20
1.20
3.90
2.30
3.20
4.20
2.20
1.20
39.00
46.00
34.00
34.00
40.00
44.00
47.00
45.00
50.00
56.00
24.00
11.00
10.00
11.00
12.00
37.00
9.10
14.00
16.00
40.00
38.00
27.00
30.00
30.00
34.00
48.00
56.00
67.00
87.00
114.00
137.00
114.00
39.00
25.00
18.00
7.10
8.20
8.10
9.00
9.00
9.00
9.00
11.00
19.00
32.00
28.00
29.00
30.00
23.00
28.00
35.00
35.00
31.00
28.00
26.00
20.00
21.00
18.00
18.00
24.00
49.00
42.00
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
20651
9405
4126
2311
729
201
131
45
29
24
22
33
23
14
54011
28628
14534
9875
4351
1541
1048
282
202
159
110
144
109
46
31085
17167
7723
3998
1134
295
177
51
37
33
27
43
31
16
44425
23196
10800
6165
2154
593
375
108
67
51
42
59
41
24
49523
23184
10145
5909
2064
689
477
133
88
74
47
85
70
42
101555
59024
32778
28181
17283
8896
8958
3490
2965
2570
2429
4296
3676
1880
50915
29250
16296
12704
6789
3126
2961
1148
985
794
770
1352
1074
561
21794
11039
6106
5047
2833
1363
1230
472
367
346
284
521
413
175
25195
14685
8683
7951
5164
2672
2602
961
717
634
529
838
588
273
18537
9904
5451
4456
2592
1325
1279
510
405
329
288
524
401
212
18495
11381
7109
7154
5210
3121
3333
1368
1174
1038
949
1702
1289
638
137404
87485
50571
40190
21248
10323
9662
3761
3033
2866
2423
4413
3584
1786
133947
85324
53081
44662
23896
11183
10341
4044
3475
3119
2747
4766
3961
2117
61898
35778
20260
14336
6137
2396
1782
602
449
414
371
567
416
188
85189
52558
30857
23997
11723
4960
4413
1533
1229
1037
874
1418
996
447
15312
8756
5320
4630
2942
1580
1528
594
456
403
370
574
405
181
21361
10671
5430
3610
1451
570
500
156
122
97
78
141
90
49
21562
10664
5322
3561
1600
699
535
157
130
96
88
132
96
44
22703
10601
4788
2893
1196
490
379
118
73
82
47
79
52
25
20827
11434
5786
3835
1618
595
464
141
122
99
86
129
101
41
23217
11464
5300
3284
1381
561
413
135
85
72
59
85
56
27
20491
10109
4517
2626
968
327
194
54
45
28
23
34
14
5
97841
50570
28512
26740
16817
7056
5388
1865
1386
1227
1227
2074
1865
1147
16232
8838
4351
2712
1003
328
222
60
44
35
29
42
21
9
22894
12376
5987
3848
1654
678
512
170
126
105
83
103
68
31
59336
29359
14474
9405
4204
1535
1351
455
265
302
286
408
320
137
37144
17434
7349
4053
1292
357
236
60
48
33
30
37
21
13
31260
15931
8116
5213
2042
620
384
115
69
45
43
60
37
16
81721
43819
24407
16943
6528
2309
1656
472
333
217
188
316
236
124
48736
27868
15397
11515
5179
2110
1791
595
388
299
287
435
331
173
32694
19536
10405
7048
2634
908
689
233
161
117
87
152
119
55
43321
24515
13681
10328
4236
1601
1055
278
165
125
91
120
92
43
52548
33989
20192
15360
6265
2203
1394
347
200
133
114
175
103
58
58745
34199
19311
13754
5247
1816
1258
347
167
154
112
190
166
68
75554
46689
26633
19361
7406
2394
1489
387
243
168
132
224
174
106
15986
13549
8922
7228
3208
1263
897
277
173
136
115
192
155
80
58987
38957
22960
17178
6713
2319
1273
300
167
121
87
117
97
49
50776
33305
21163
18511
10131
4555
3683
1161
692
528
450
681
545
285
30660
19552
12754
11533
6129
2818
2355
768
475
329
302
449
313
136
38674
24095
15220
13307
6981
3007
2150
626
349
229
184
271
183
77
59097
35598
21465
16982
8192
3431
2529
764
401
304
225
355
222
96
59479
34024
20393
16548
8427
3599
2692
744
420
300
240
317
196
59
7022
3771
2290
2196
1563
774
650
219
149
118
100
163
133
70
29622
21373
16000
18367
13262
6682
5942
2013
1305
982
890
1503
1135
608
15689
9114
5514
4700
2545
1377
1267
355
209
145
116
183
140
62
43958
24036
12656
8727
3333
1228
925
282
158
103
94
162
118
66
44502
23957
12521
8899
3752
1442
1146
363
197
177
157
248
190
103
82091
42232
21508
13865
4568
1340
881
275
123
127
61
169
107
49
67820
35885
18828
12821
4956
1761
1288
335
220
205
152
213
171
76
52077
29907
16856
12289
5089
1939
1535
468
285
198
173
269
199
95
95544
56599
33120
25179
10711
3945
2912
852
512
389
356
483
305
173
46259
23209
11715
8024
3343
1266
1003
290
185
151
115
195
137
63
51493
25743
12565
7641
2685
868
593
139
79
65
50
66
56
23
33739
18991
11977
10977
6713
3355
3243
1127
752
589
468
722
478
209
67436
34424
18621
13528
6223
2468
2223
805
452
355
304
460
395
203
54383
34991
21188
17696
9281
4384
4269
1479
1065
794
684
1099
739
311
103525
64041
38396
29860
14203
6576
6172
2288
1515
1265
1063
1680
1381
668
122941
63411
34579
25707
12707
5515
5053
1768
1232
936
880
1421
1115
699
121822
65300
34068
24055
10178
4070
3335
1148
783
630
465
913
710
427
63215
32435
17385
12744
5875
2309
2045
703
421
344
237
413
300
155
41279
22329
12139
8429
3310
1177
876
259
144
141
97
171
138
69
42334
22361
12123
8723
3589
1386
1222
355
232
183
132
213
143
71
51375
28392
14809
9773
3380
1109
783
227
159
127
99
135
85
39
26367
14696
8080
6209
3024
1267
984
295
179
113
94
141
84
43
25847
14829
8080
5914
2475
885
666
204
135
104
85
121
75
32
24613
11989
6608
5460
2771
1135
841
227
112
70
53
68
48
23
35108
20282
12441
11241
6252
2758
2075
602
351
252
199
293
212
110
30532
15649
8663
6771
3293
1420
1140
349
230
189
139
227
195
79
57759
36779
21792
17062
7921
3294
2634
904
583
469
385
597
451
242
38745
18960
9614
6683
2754
1047
889
249
179
131
120
197
148
81
51187
27021
14052
9818
4082
1564
1221
372
240
204
160
275
186
99
48387
25449
14105
11314
5727
2656
2327
767
471
374
347
481
339
144
46621
25096
14447
11951
6687
3191
2924
878
531
414
310
467
325
173
48093
25527
13604
10080
4425
1805
1327
393
234
179
135
226
158
73
30511
15229
8167
6427
3108
1437
1341
467
280
215
163
253
181
79
32937
17768
10428
8347
4115
1737
1423
469
301
206
163
272
167
73
44110
24860
13827
10462
4553
1745
1376
383
233
213
151
271
189
105
32686
17345
9750
7751
3789
1633
1452
447
289
225
190
291
193
84
43547
25941
15617
13057
6622
2950
2680
912
607
531
403
604
433
217
53677
34090
20129
15955
7417
3188
2741
859
586
453
353
559
434
220
32106
19015
11619
10299
5605
2731
2417
890
589
434
368
669
515
249
28324
16563
10301
9043
4844
2196
1819
608
409
310
303
441
336
171
41276
25529
16112
14389
8155
3904
3695
1315
859
665
563
898
664
345
20871
11020
5800
4100
1714
681
598
184
119
89
65
112
100
53
52970
26595
13783
8570
2842
890
633
187
110
102
97
137
88
50
30520
13378
6363
4172
1732
647
420
122
68
60
57
77
70
22
27993
12552
6088
4022
1697
693
563
188
125
85
88
107
77
25
58702
30177
16750
12970
6878
3802
4278
1740
1202
968
885
1465
1200
560
329733
209853
121067
89953
41093
16490
13653
4133
2903
2113
1653
2403
1717
650
170873
92427
53800
40007
18327
8013
6667
2520
1727
1307
1000
1333
827
360
115
0.5 ‐ 16
37731
114994
61802
88076
92488
276101
128164
51814
71218
46002
63321
376964
384549
145405
220785
42871
44277
44641
43501
45236
46111
39429
242568
33917
48603
121699
68093
63935
179145
114929
74785
99607
133023
135466
180854
52101
149276
146184
88437
105277
149565
147379
19149
119075
41353
95781
97551
167347
144656
121285
230907
95892
102043
93133
147693
152052
271965
277264
267478
138427
90487
92994
110451
61533
59421
53996
92065
68797
150630
79717
110383
112743
113841
106186
67780
78334
102375
76041
113904
140439
87258
75495
118025
45454
107003
57685
54278
141017
836767
398827
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Sampling
Date
12/5/05
12/23/05
12/29/05
12/31/05
1/6/06
2/6/06
2/27/06
4/5/06
4/3/06
4/21/06
5/2/06
5/9/06
5/9/06
5/12/06
5/16/06
5/19/06
5/26/06
6/6/06
6/16/06
6/21/06
6/27/06
7/7/06
8/3/06
10/4/06
11/3/06
11/10/06
12/5/06
1/5/07
2/8/07
2/9/07
2/9/07
2/10/07
2/11/07
2/12/07
3/8/07
3/20/07
4/10/07
4/26/07
4/30/07
5/3/07
5/15/07
5/22/07
7/6/07
7/6/07
7/6/07
7/9/07
8/9/07
8/9/07
9/4/07
9/4/07
9/4/07
9/22/07
10/1/07
11/9/07
11/11/07
12/3/07
1/11/08
1/11/08
2/7/08
3/3/08
3/13/08
4/1/08
4/14/08
4/29/08
5/6/08
5/7/08
5/12/08
5/15/08
5.17.08 7:55
5/19/08
5/21/08
5/28/08
6/3/08
6/20/08
7/7/08
8/4/08
9/3/08
10/4/08
10/9/08
11/2/08
11/4/08
11/5/08
12/2/08
1/6/09
1/23/09
2/3/09
3/3/09
3/19/09
4/6/09
4/21/09
Flow
(cfs)
31.00
63.00
63.00
580.00
60.00
25.40
26.00
54.00
60.00
62.00
111.00
134.00
134.00
155.00
211.00
248.00
212.00
241.00
171.00
153.00
143.00
95.00
49.00
24.00
29.00
23.00
25.00
25.00
20.00
24.00
25.00
28.00
33.00
26.00
22.00
33.00
31.00
32.00
35.00
37.00
39.00
33.00
17.00
16.00
15.00
15.00
13.00
11.00
9.20
8.50
8.80
13.00
10.00
12.00
18.00
12.00
97.00
96.00
3.00
11.00
18.00
16.00
27.00
30.00
28.00
29.00
31.00
36.00
44.00
45.00
43.00
30.00
27.00
20.00
10.00
5.40
4.90
8.50
4.80
15.00
7.30
6.40
5.90
6.90
23.00
8.20
18.00
15.00
18.00
28.00
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
57290
30493
17225
13902
7698
3667
3833
1370
885
642
623
888
628
273
229787
114767
62093
44820
20833
9673
8613
3180
2227
1673
1407
2193
1347
633
102378
54800
30710
23112
10700
4640
4198
1427
907
667
573
850
577
240
378195
210145
115615
88235
39535
15875
12975
4035
2655
1980
1445
2085
1430
500
119527
58433
32060
24740
12040
4920
3567
973
600
433
320
467
273
140
61150
26447
13027
8460
3163
1057
857
290
100
103
93
150
97
70
131667
63050
30967
21750
8483
2933
2500
967
367
333
233
400
200
117
123267
57747
32987
23653
10933
4027
3427
1107
667
507
427
333
360
200
172387
82040
45320
32707
14013
5707
4600
1347
1027
787
560
1013
653
133
16545
8235
4407
3570
1945
938
772
258
130
88
80
137
45
22
39733
22253
12793
10173
5680
3307
3307
940
613
460
360
447
233
113
123260
61440
31673
22247
10020
4227
3533
1207
813
607
473
613
440
173
92960
43220
20880
15000
6107
2693
2313
720
600
500
387
480
447
173
110547
55687
29507
21167
9780
3900
3240
1020
600
507
433
533
353
133
160427
80260
40660
27747
11027
3573
2460
720
413
347
247
367
273
80
396960
229547
125613
91107
35333
12300
9653
2387
1220
927
673
813
420
153
138773
71900
37840
25440
9953
3680
2733
827
620
453
253
307
227
60
184573
92053
49613
36960
15853
7027
6107
1893
907
693
493
667
307
120
116827
59573
32240
21640
9467
3507
2613
827
493
387
373
613
307
147
127033
71353
40393
33507
16993
7527
6547
1513
1053
840
660
780
487
227
372573
210173
125933
107720
55227
22960
16747
4760
2947
1987
1427
2067
1213
360
104387
56860
33687
27647
13200
5507
4993
1313
753
493
420
680
373
113
39063
19243
10743
8313
4460
2057
1943
587
383
353
267
373
300
97
112340
56953
31233
23027
9000
2920
2507
660
440
353
227
353
253
173
86547
40200
21373
15093
6360
1920
1693
480
333
333
227
387
280
93
77347
34907
19333
13587
6560
1987
1467
427
173
160
213
240
253
93
43697
23833
13057
10683
5247
2560
2353
910
583
450
433
637
507
183
77340
40687
22513
17500
8680
3587
3187
1153
693
400
407
547
440
240
46080
21860
11333
7640
3263
1233
963
250
227
117
123
170
90
87
123913
67327
37063
25337
9097
3177
2190
647
493
340
280
370
293
123
214217
136453
82923
64743
26383
8397
5410
1403
803
607
510
747
507
233
155987
84073
45920
32010
13253
5040
4063
1263
797
670
580
847
630
250
211973
115593
61727
42083
16710
6770
6530
2003
1463
1190
910
1513
1027
467
43252
23009
12378
9147
4430
1983
1938
657
419
347
278
435
301
126
47640
24273
13800
11837
6580
3123
2630
680
490
390
283
327
243
120
84227
40507
22093
15273
6300
2287
2073
640
380
300
233
327
253
160
31756
18012
10475
8806
4549
2061
1730
514
323
253
200
301
187
94
24516
12702
7018
5799
3210
1449
1268
346
235
168
131
197
141
61
41496
24851
14423
11319
5678
2583
2245
695
464
317
277
399
286
123
21915
11319
6352
5631
3358
1573
1376
454
265
214
153
229
153
60
35003
19147
10418
7324
3219
1277
1132
373
234
191
176
247
183
75
3232
3933
3068
2855
1813
955
918
303
196
140
113
153
89
39
47093
23326
12378
8409
3280
1187
887
305
188
145
115
161
162
60
32215
14639
6890
4446
1585
482
337
92
53
40
26
32
21
11
6957
4010
2136
1506
630
246
182
51
33
23
20
31
23
11
1174
514
279
237
130
59
54
16
12
9
8
14
11
6
7998
5071
2849
2210
1088
437
400
130
92
68
59
73
37
10
4010
1879
877
602
258
85
61
15
8
6
4
5
3
1
6876
3327
1671
1190
488
162
122
35
21
18
13
20
11
4
1169
490
266
226
122
53
52
18
14
11
11
18
13
6
3438
1758
986
764
313
90
53
12
6
4
3
4
2
1
7232
3222
1450
1014
558
241
218
69
45
35
29
45
30
13
3917
2398
1384
1091
503
185
151
43
32
25
21
37
27
13
4422
2854
1577
1143
481
162
123
35
23
18
13
17
10
4
23660
11929
7132
6532
3903
1802
1503
439
268
177
149
180
81
21
1975
2156
1523
1487
873
389
395
142
103
87
71
113
73
30
3892
2016
1010
681
296
107
87
24
15
12
10
17
14
8
6380
2992
1466
1017
414
147
108
29
19
15
10
13
5
1
11868
5153
2568
2046
1039
484
456
133
78
56
42
35
11
2
18823
14404
10876
12162
8287
4016
3661
938
510
281
162
148
18
4
20955
12976
8380
8160
5410
2647
2541
751
479
299
219
227
84
17
11105
5123
2933
2528
1411
636
534
164
80
57
44
44
13
3
18539
9818
6002
5746
3780
1914
1854
586
362
267
196
235
103
23
15601
9400
6316
6609
4678
2367
2420
772
490
333
236
305
134
40
10848
7375
5295
5569
3675
1734
1603
458
273
181
127
154
65
16
15553
9599
6728
7001
4477
2088
1900
546
317
206
143
179
75
21
65104
36047
19591
14770
7372
3188
2535
861
582
496
414
733
510
216
98563
56887
31886
24310
12331
5825
4498
1716
1198
920
741
1245
820
376
145707
90698
51483
39633
20830
10523
9507
3268
2676
2119
1867
2663
1796
861
135110
85687
49591
38051
20550
9913
8727
3068
2357
1878
1563
2241
1514
671
48000
30359
17948
15490
9762
4984
4543
1665
1303
1089
873
1359
955
425
23033
12545
7534
7029
4788
2321
2067
693
490
418
347
565
385
185
37349
21597
11825
8647
4327
1850
1580
574
451
388
314
517
347
150
40751
21728
10507
6510
2423
911
713
249
176
150
137
217
193
102
41210
23764
12604
8598
3788
1567
1303
419
340
283
219
380
307
127
56437
34275
18245
12010
4881
1801
1289
393
275
204
169
239
194
83
46392
25820
14092
11000
5608
2168
1781
573
403
338
211
404
262
116
117840
64392
34261
25014
13085
6268
5831
2194
1672
1398
1231
2002
1416
727
40176
21733
11740
8897
4491
2023
1684
564
455
359
272
486
341
170
67443
42560
26046
22677
13270
6211
5648
2087
1646
1420
1202
1947
1367
682
41197
20189
10184
6705
3061
1206
1038
350
263
244
197
291
231
89
49351
32049
19108
15975
8399
3704
3138
1105
823
627
537
764
438
192
42829
20077
9499
5795
2333
882
660
180
143
99
72
107
69
24
29620
13812
6777
4446
1762
627
484
127
107
80
73
98
53
23
88336
45719
24206
17140
8394
3584
2943
1020
708
674
535
788
590
269
45607
26724
14793
11637
6108
2755
2435
863
672
564
492
733
498
230
63050
32436
17131
13340
8003
3911
3858
1498
1161
1077
921
1581
1201
638
52875
26183
12687
8581
3870
1606
1321
433
332
233
217
314
220
115
27374
12416
6858
5688
3285
1471
1254
414
298
251
216
306
204
107
104156
55328
28379
21173
11948
5600
5141
1894
1459
1233
976
1682
1094
461
116
0.5 ‐ 16
139145
502613
235538
874205
258353
114993
263850
259440
362160
37150
100300
260553
186307
237273
328520
906953
293007
397147
248867
308687
925733
250313
88087
240267
175227
156653
104950
177133
93350
270527
543103
345133
469493
98572
112297
174893
79166
57182
105030
52992
78922
17768
97636
60858
15848
2517
20511
7811
13954
2463
7433
14188
9813
10877
57756
9385
8180
12614
23968
74286
63127
24671
49401
49662
37356
48811
152203
240938
382771
360249
138329
62214
89767
84666
94784
130412
109052
276605
93222
193524
85156
136019
82745
58066
194637
113881
149169
108873
60035
240064
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Trout
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Sampling
Date
4/23/09
5/2/09
5/4/09
5/5/09
5/8/09
5/12/09
5/17/09
5/19/09
5/21/09
5/28/09
6/4/09
6/17/09
7/7/09
8/6/09
9/2/09
10/9/09
10/13/09
10/14/09
11/3/09
12/1/09
1/12/10
2/2/10
3/3/10
8/12/01
1/9/02
3/5/02
4/4/02
4/4/02
4/12/02
4/23/02
4/25/02
4/26/02
5/9/02
5/17/02
5/28/02
6/1/02
6/4/02
7/8/02
8/12/02
8/12/02
9/12/02
10/11/02
11/5/02
11/8/02
12/3/02
2/5/03
2/8/03
3/5/03
3/26/03
3/27/03
4/2/03
4/8/03
4/9/03
4/23/03
5/2/03
5/13/03
5/20/03
5/21/03
5/24/03
5/28/03
6/5/03
6/11/03
7/10/03
8/6/03
9/2/03
10/9/03
10/9/03
11/4/03
12/5/03
1/7/04
2/4/04
2/17/04
3/3/04
3/8/04
3/15/04
3/22/04
3/30/04
4/8/04
4/13/04
4/22/04
4/26/04
5/3/04
5/6/04
5/17/04
5/21/04
6/2/04
6/14/04
9/14/05
9/27/05
10/7/05
Flow
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
(cfs)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
32.00
92528
48254
25302
18944
10203
4733
4276
1576
1190
1039
878
1451
988
535
40.00
39815
18943
10063
8625
5122
2729
2375
879
730
596
533
856
645
312
38.00
29050
13656
7417
6673
4363
2409
2449
929
677
625
510
775
547
252
45.00
35603
18304
11000
10121
6557
3470
3358
1178
921
809
639
1030
672
357
38.00
20139
9095
4801
4058
2729
1526
1495
510
398
321
256
412
306
151
41.00
47761
25551
13435
9937
5209
2218
1833
623
494
424
293
407
222
70
47.00
104033
56612
29602
19467
8725
3664
2939
1127
810
774
525
943
669
312
52.00
103026
53440
27738
19369
9152
3536
3147
1258
900
806
775
1228
964
483
50.00
80385
43966
23159
16601
7925
3115
2625
839
657
573
474
739
539
247
40.00
31467
17007
9788
7568
3853
1908
1723
602
473
365
367
525
355
178
34.00
27106
14874
8923
7804
4767
2183
1960
693
504
398
312
489
322
149
24.00
26584
16981
10316
8217
3731
1485
1247
429
353
280
244
367
250
116
12.00
36189
17733
9072
6140
2858
1132
945
317
266
236
160
298
218
108
no data
55648
28117
13409
9297
4293
1753
1337
420
285
215
189
284
167
79
no data
94635
43529
20463
13969
6553
3119
2892
1119
772
628
553
917
558
314
no data
72074
35805
16862
11508
5470
2338
1815
554
396
265
233
335
195
88
no data
55473
31385
17522
13033
6166
2725
2494
1183
822
900
869
1844
2322
1486
no data 125569
70141
36827
25167
10525
4074
3016
1063
908
692
755
1133
916
484
no data
46348
24272
12666
8912
3956
1549
1178
420
286
224
225
305
209
81
no data
54177
27012
14336
10903
5729
2527
2178
745
620
433
431
696
474
206
no data
93820
47564
22955
15577
6790
2535
1892
592
404
363
253
361
245
106
no data
52978
32253
18015
13667
6650
2851
2353
814
620
506
437
653
449
180
no data
44456
22905
12079
9130
4396
1834
1535
520
413
330
283
430
309
141
4
17951
10251
5742
4156
1693
630
446
138
76
48
47
60
40
19
84
9961
6432
3857
3053
1445
651
467
114
62
49
37
52
35
16
36
12661
5664
2620
1699
614
236
147
29
23
17
8
17
13
4
188
74318
52340
35188
27405
11274
3780
2459
754
449
342
294
427
372
181
191
70421
41563
25877
19385
8317
3060
1999
685
377
321
255
364
247
124
231
52363
32239
18626
14630
6467
2305
1735
537
329
250
228
308
249
125
147
22557
13462
7847
5723
2258
867
666
214
130
108
83
115
78
39
170
29718
19418
11322
8093
2934
945
612
192
132
84
81
122
86
42
197
38292
21486
11775
8348
3522
1517
1253
376
245
181
139
199
145
88
233
36421
30503
20482
16711
7299
2804
1998
589
363
253
213
339
230
122
299
73903
52864
33114
26392
11533
4548
3405
1085
737
558
489
738
607
313
192
36713
28824
18380
14094
5561
1898
1152
308
161
115
97
147
90
42
333
41903
28451
19614
19455
12241
6395
5502
1797
1131
861
731
1251
919
466
241
34639
25999
16362
12891
5737
2373
1836
549
334
236
187
281
186
85
42
34158
21435
12905
10126
4529
1666
1180
344
181
127
105
145
84
27
4
74093
50902
32137
26050
11538
4244
2794
711
366
230
181
193
78
33
5
9677
5537
3176
2427
1126
451
339
93
54
39
30
47
27
11
7
49515
35496
23573
19837
9428
3827
2877
897
521
409
303
411
243
100
14
41019
24593
14380
11155
4835
1899
1319
393
208
149
122
146
91
39
13
6335
3779
2570
2606
1682
878
768
231
142
102
77
115
67
27
177
142387
119973
98277
115967
85140
50080
50630
19260
12507
10057
8550
14103
10187
4943
20
6326
4052
2941
3225
2311
1215
1154
369
224
171
133
186
127
56
64
166908
100706
56789
42325
17408
6726
4979
1308
783
582
503
787
538
279
57
25246
13843
8239
6911
3754
1914
1700
555
325
239
189
296
227
99
36
46451
25764
14015
9759
4005
1613
1080
336
188
139
99
139
123
53
227
382540
229687
131133
98647
43780
17627
16420
5773
4227
3353
3007
4607
3600
1660
190
99675
65501
40491
32580
15181
6220
5204
1717
1107
941
715
1121
735
329
136
42437
24159
13331
9543
3854
1381
930
302
180
130
85
141
93
36
105
40295
21697
11585
8040
3127
1090
775
227
158
93
93
118
88
34
120
49811
29976
17461
13175
5555
1955
1426
411
287
203
145
248
166
83
103
30926
16466
8269
5553
2272
869
616
170
93
66
51
79
51
25
105
33134
18393
9298
5867
2088
688
416
116
67
50
45
45
30
12
172
21535
14065
9017
8160
4771
2334
2221
720
450
346
264
384
244
110
309
35951
21897
14007
12299
7069
3413
3147
1089
675
471
413
611
415
168
318
45600
28492
17537
15349
8603
4261
4097
1361
943
645
551
861
547
241
534
144744
85904
52173
43971
24253
11899
11733
4011
2707
2117
1741
2595
1691
693
596
109477
63262
36500
29448
14687
6633
6025
2175
1445
1160
987
1703
1370
675
452
64876
34537
20416
16572
8376
4129
3717
1259
833
620
525
867
591
232
368
45919
26165
15067
12164
5889
2696
2345
806
546
409
317
497
334
138
67
30532
18305
9926
6627
2301
722
492
115
69
39
35
41
29
13
17
81357
43589
23787
17115
6972
2712
2064
571
328
224
179
309
172
64
1
27471
14466
7531
4813
1513
549
495
172
122
86
82
123
86
38
5
18197
11571
8880
8877
4969
2317
2030
622
383
268
217
301
164
58
5
18197
11571
8880
8877
4969
2317
2030
622
383
268
217
301
164
58
7
37893
21044
11566
8452
3665
1348
1003
253
142
101
69
84
53
14
9
101722
66615
41810
35825
18465
8122
6383
1995
1177
890
643
847
487
232
24
55818
40042
26159
21065
9080
3153
2261
557
325
199
159
210
93
37
39
40094
20567
10563
7461
2993
1105
757
187
104
71
52
69
39
20
93
148275
80453
47592
39685
21032
9941
9320
3483
2267
1691
1499
2376
1531
616
46
38653
19619
10526
8471
4505
2109
1825
575
337
251
193
265
160
84
57
56694
30691
15587
10595
4195
1564
1271
408
230
181
143
195
129
49
129
40969
23817
14733
13043
7501
3688
3593
1287
893
691
572
829
544
229
229
38753
22294
13879
12109
7125
3721
3631
1287
853
593
511
750
481
223
166
37913
19793
10545
7987
3800
1672
1403
449
252
166
139
177
127
63
190
24337
12687
7382
6369
3533
1727
1569
521
344
234
189
284
181
80
200
27239
15044
8758
7151
3541
1493
1347
472
295
231
169
270
186
74
124
34107
17720
9637
6824
2763
1010
806
242
161
105
89
127
82
31
172
23198
13065
8303
7409
4101
1859
1693
579
379
257
238
367
228
111
289
82716
48711
29932
25952
14420
6873
6528
2277
1485
1121
908
1469
1003
435
303
83447
48833
28763
23063
11575
5579
5383
1863
1205
1012
865
1215
911
427
207
32681
20981
14111
13489
7667
3567
3183
1103
719
577
402
620
363
146
164
20634
13873
9508
8878
4873
2171
1883
584
375
285
220
336
173
67
159
40932
23341
14357
12681
6880
3258
2951
916
576
405
325
491
298
119
88
23323
12316
6336
4523
1926
750
588
162
92
62
47
58
38
14
8
79715
43692
24067
17207
6610
2357
1597
437
242
177
108
163
67
17
20
44492
20820
10540
7317
2802
963
842
230
145
115
92
123
102
32
17
45380
22705
11818
8292
3450
1285
878
248
147
77
63
125
62
32
117
0.5 ‐ 16
211364
91913
70082
93662
46044
108407
229892
225338
181599
75999
70336
70485
75563
115413
189706
147850
136739
280785
100549
120263
193351
132246
98618
41278
26215
23747
209403
172872
130265
54107
73740
87479
118205
209973
107540
140251
101610
86984
203518
23023
147335
100309
19353
737117
22435
400343
63438
103711
944400
271188
96567
87387
120818
65481
70235
64510
101457
128847
389539
274872
157319
113154
69234
179379
57509
58796
58796
85674
284980
159121
84060
369144
87491
121883
112159
105987
84422
59357
66198
73673
61675
223396
213712
99463
63793
107408
50219
176437
88582
94530
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Sampling
Date
11/29/05
12/2/05
12/1/05
12/5/05
12/22/05
12/23/05
12/29/05
12/31/05
1/5/06
12/31/05
12/31/05
12/31/05
12/31/05
12/31/05
12/31/05
2/6/06
2/27/06
2/27/06
2/27/06
4/3/05
4/7/06
4/7/06
4/7/06
4/7/06
4/7/06
4/3/06
4/21/05
4/25/06
4/24/06
4/24/06
4/24/06
4/24/06
4/24/06
4/24/06
5/2/05
5/9/06
5/12/06
5/16/06
5/19/06
5/25/06
6/7/06
6/20/06
6/26/06
7/6/06
7/19/06
8/3/06
10/2/06
11/6/06
12/7/06
2/5/07
2/9/07
2/10/07
2/11/07
2/12/07
3/6/07
3/19/07
4/3/07
4/3/07
4/9/07
4/26/07
4/27/07
5/2/07
5/11/07
5/14/07
5/24/07
6/26/07
6/26/07
6/26/07
6/29/07
7/3/07
7/3/07
7/3/07
6/28/07
6/28/07
7/31/07
7/31/07
7/31/07
8/10/07
8/10/07
8/10/07
9/7/07
9/7/07
9/7/07
9/22/07
10/4/07
10/4/07
10/4/07
10/20/07
10/20/07
10/20/07
Flow
(cfs)
51
210
178
65
518
535
431
2,250
283
2,250
2,250
2,250
2,250
2,250
2,250
148
304
304
304
237
167
167
167
167
167
237
208
235
224
224
224
224
224
224
493
536
614
747
954
563
630
323
290
140
74
27
11
14
17
21
41
47
60
71
53
144
127
127
194
125
146
233
240
211
116
22
22
22
20
15
15
15
21
21
3
3
3
2
2
2
2
2
2
4
4
4
4
13
13
13
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
170645
127785
79880
61233
28277
12268
10375
3190
2165
1503
1130
1557
937
330
326440
219150
123847
91617
40297
15853
12647
3883
2597
1780
1547
2203
1247
523
443280
281800
170520
139127
69160
31700
30593
10560
7040
5353
4280
6647
4187
1460
51057
25433
12922
9900
4802
1797
1335
403
242
180
122
177
93
37
199333
98027
53673
43047
22987
11307
11260
4040
2767
2147
2007
2893
1820
713
114427
57553
32033
26327
14353
7440
7027
2587
1627
1393
1247
1613
960
387
102585
61888
36640
28133
13275
5843
4878
1515
1065
803
645
860
498
162
517850
374025
230005
177415
80180
32055
26105
8450
5230
3505
2720
3655
1710
515
116130
61820
34690
25590
11763
4823
3567
1030
610
433
313
460
187
63
201457
76930
29543
14063
3223
587
270
40
50
23
13
33
13
3
113590
42413
16580
8210
1713
260
97
17
7
0
7
3
0
0
161740
69787
37587
32627
18803
9823
9450
3370
2220
1787
1303
2043
1033
297
172097
87613
52537
48703
30110
15870
16023
5720
3497
2857
2207
3110
1350
497
116657
44997
22827
18387
9917
4877
4943
1897
1357
1013
1003
1510
977
377
288960
309990
247213
260697
161077
80200
72883
24303
15463
11637
9767
14283
8883
3260
73617
37057
19760
14820
6087
2333
1653
547
277
187
123
230
160
57
237450
111333
59233
40200
16000
5967
5667
1667
1067
1100
700
950
583
267
771800
468017
277567
214250
98883
42150
37967
13317
8217
6833
4950
7283
4383
1850
895033
498700
286950
223450
109600
47100
44433
15400
10617
7533
6733
9017
5617
2267
417173
218480
123907
97373
46333
20320
18147
5680
3547
2480
1840
2453
1280
400
122927
85765
61567
57782
34422
15633
12810
3488
2040
1280
900
967
413
97
156892
103445
64045
49308
22217
8687
6318
1712
943
600
458
512
240
92
43127
17168
8378
5345
2248
833
568
177
85
68
70
90
37
10
44310
18375
9277
5632
2362
905
662
187
113
68
57
77
42
13
86220
45858
26422
18818
8537
3387
2645
808
543
358
310
427
257
72
51120
23627
12540
9277
3733
1477
1290
447
263
230
130
223
137
77
15175
7625
4002
2937
1230
598
448
120
58
35
48
48
38
20
56747
27657
14783
10763
5103
2403
2160
800
527
383
337
403
240
93
72028
36097
19142
15033
7205
2840
2038
430
250
130
117
98
40
17
39983
20498
12212
10685
5690
2653
2098
465
250
195
122
118
65
22
15477
8123
4953
4298
2437
1153
913
237
120
122
58
70
30
10
103828
63220
39115
34895
19092
8675
7005
1752
943
632
468
503
210
70
10073
4632
2585
2053
1083
492
390
97
57
42
40
45
30
5
14707
7542
4473
4337
2645
1383
1160
347
223
142
152
173
93
37
69323
36140
20360
15370
7230
3113
2647
880
470
317
260
393
230
113
88267
41460
22187
17420
9560
4447
3973
1380
827
653
440
907
493
147
161473
86207
47573
37247
18407
8173
7413
2640
1580
1160
1093
1200
693
320
179813
93493
48693
35100
15707
6600
5347
1713
973
753
520
853
447
187
407773
253093
151273
115487
51547
20627
16393
4920
3093
2053
1813
2473
1293
520
139553
75333
41280
32647
15733
7380
6813
2053
1333
827
833
927
573
160
447653
262827
152333
127413
64333
29493
24200
7040
4960
3080
2827
3360
1933
747
122080
67153
38147
29547
13300
5800
4800
1467
927
673
573
680
347
180
218280
118000
67720
54560
25160
9613
7907
2493
1413
920
640
840
587
187
67127
37703
21803
17320
7840
3253
2633
720
467
330
287
443
210
117
40447
19693
10727
7847
3597
1633
1227
313
193
120
73
153
83
20
21450
10207
5307
4023
1830
787
707
147
77
83
43
77
43
23
79997
44637
26527
22703
12460
5230
4473
1210
727
447
340
407
213
63
132667
62947
35800
26320
10653
3627
2773
680
360
213
93
253
107
80
241960
167953
108187
99647
59097
29210
26313
8410
5440
3890
2880
3893
2170
747
50780
25690
13707
9520
3723
1290
1107
283
243
153
87
153
90
40
199173
129293
83640
71137
32417
11190
7263
1663
1010
647
583
763
477
237
307480
271557
194287
185200
108463
52587
50357
17300
11000
7963
6407
8800
4353
1577
297570
204950
124673
102327
52063
23103
22010
7423
4790
3517
2750
4117
2297
760
58965
47378
33147
32087
19925
10128
10119
3609
2337
1725
1321
1787
977
289
64313
36113
21637
17397
7647
3243
2853
887
533
357
333
437
347
110
98360
51133
28420
21747
10873
4707
4373
1313
980
573
540
780
500
193
24340
13778
8190
7745
4386
2096
1821
541
316
251
190
253
133
49
33222
17587
9933
8586
4674
2104
1912
555
367
182
165
259
112
35
39737
25638
16221
14579
8323
3996
3792
1283
809
619
486
726
450
158
29589
16194
8933
6157
2527
893
730
226
152
119
130
150
95
40
35772
21189
12553
10153
5119
2141
1752
492
288
216
147
200
94
32
54428
40742
25698
21477
10673
4597
3954
1221
752
565
440
572
339
125
94192
57185
34804
29528
16557
8441
8285
2863
1888
1384
1153
1595
1012
432
49967
32668
19384
15085
7421
3309
2990
959
674
479
367
538
313
128
2944
4190
3575
3293
1987
1016
955
319
205
152
115
154
87
34
35476
16914
8513
5744
2246
902
710
197
127
100
58
84
44
13
23159
10646
5295
3540
1449
541
380
100
60
47
34
36
23
12
20328
9712
4932
3599
1422
509
395
113
76
51
39
64
38
16
37862
18902
9607
6121
2104
712
539
147
98
74
56
70
39
12
38963
22651
13366
10319
4700
1832
1520
439
264
199
140
179
84
30
21562
9900
4895
3191
1241
465
354
79
42
34
23
24
13
8
21957
10943
5710
4215
1865
736
595
140
85
72
53
71
37
12
15073
7046
3873
3120
1415
547
475
142
89
67
43
70
40
15
11645
5751
2998
2252
1067
490
355
94
55
45
34
32
16
5
5741
2840
1717
1635
996
469
391
103
60
35
25
23
9
1
2545
1163
669
577
273
86
64
15
9
6
4
5
4
1
1568
602
290
219
104
38
29
7
5
4
3
4
2
1
29812
14223
7434
5591
2519
910
477
74
25
13
9
6
2
1
3198
1503
756
546
218
74
58
13
9
6
4
6
4
2
1638
665
324
238
106
38
27
7
4
3
2
3
2
1
19949
7187
3140
2400
1247
425
223
66
26
16
8
8
2
1
2628
1208
625
501
240
71
46
12
8
6
4
5
3
1
1728
684
324
230
99
35
26
7
4
3
2
3
2
1
114987
52938
25871
17126
8005
3217
2559
633
396
267
188
284
141
55
2687
1260
661
542
293
83
46
11
6
5
4
7
5
3
1897
766
381
273
116
39
29
8
6
5
5
9
11
6
20090
8591
4277
3121
1486
611
315
47
18
13
5
7
1
1
2611
1196
631
543
296
92
72
22
16
13
13
19
17
9
22056
9428
5053
4177
2416
1071
717
146
86
47
43
46
18
4
19264
8314
4714
4132
2526
1028
731
143
88
44
30
34
8
1
118
0.5 ‐ 16
500945
843107
1204247
108462
455307
268587
258630
1462905
261417
326247
182897
351573
441693
230360
1505357
156850
481917
1955617
2160183
959013
399993
415377
78195
82065
194590
104493
32363
122307
155448
95035
37992
280338
21618
37377
156733
192013
374860
390013
1031840
325287
1131453
285493
508133
160137
86107
44780
199370
276493
759050
106827
539257
1225753
851590
223506
156097
224300
64039
79656
116659
65893
90116
165456
258888
134155
18991
71115
45312
41278
76328
94656
41823
46480
32001
24834
14044
5419
2874
61096
6396
3055
34697
5356
3147
226614
5612
3544
38581
5541
45305
41057
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Upper Truckee
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Sampling
Date
10/22/07
11/7/07
11/7/07
11/7/07
11/11/07
12/4/07
12/4/07
1/10/08
1/10/08
1/10/08
2/6/08
2/6/08
3/5/08
3/5/08
3/12/08
3/12/08
3/13/08
4/3/08
4/14/08
4/29/08
5/6/08
5/7/08
5/12/08
5/16/08
5/19/08
5/21/08
5/21/08
5/27/08
5/27/08
6/4/08
6/20/08
6/26/08
8/6/08
9/2/08
10/4/08
10/7/08
12/3/08
1/7/09
1/22/09
2/2/09
2/23/09
3/2/09
3/16/09
3/20/09
4/7/09
4/21/09
4/23/09
5/1/09
5/2/09
5/3/09
5/5/09
5/8/09
5/15/09
5/17/09
5/19/09
5/22/09
6/3/09
6/17/09
7/8/09
8/5/09
9/8/09
10/6/09
10/13/09
10/14/09
10/16/09
11/4/09
12/2/09
1/20/10
2/1/10
3/1/10
4/5/02
4/5/02
4/11/02
4/15/02
4/24/02
5/6/02
5/6/02
5/15/02
5/16/02
5/22/02
5/29/02
5/29/02
6/13/02
6/20/02
7/17/02
8/21/02
9/19/02
10/22/02
1/20/03
1/23/03
Flow
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
(cfs)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
13
9087
4841
2346
1754
932
365
213
49
26
19
12
16
7
1
7
5868
3288
1928
1653
857
325
258
66
42
32
22
27
10
2
7
1954
880
483
399
188
57
43
11
7
5
3
4
2
1
7
1668
679
330
223
86
32
24
6
4
3
1
2
1
1
23
23577
10777
6015
5429
3394
1480
1180
289
174
118
76
77
23
2
10
3351
2138
1131
903
454
169
142
43
28
22
18
24
15
6
10
2206
691
289
190
78
29
21
7
3
3
2
3
2
1
14
6307
3978
2461
2094
1117
472
405
114
78
49
38
42
16
3
14
2920
1683
860
524
199
68
51
15
9
6
5
9
6
3
14
1920
734
343
220
87
30
25
7
4
3
3
5
3
2
18
12301
5836
3214
2618
1342
518
347
85
46
27
15
16
5
1
18
3866
2320
1191
767
306
107
77
21
12
10
7
9
6
2
37
33270
16924
9823
8280
4362
1649
1167
256
114
92
43
35
8
1
37
2710
1255
598
408
170
57
38
8
4
3
2
2
1
1
56
17849
9136
5187
4439
2403
998
762
196
106
66
42
39
15
2
56
3083
1517
792
595
280
104
76
20
12
8
6
8
5
2
93
117740
70059
45254
43686
27412
12499
10650
2600
1467
937
571
606
208
45
79
11293
4865
2494
2033
1079
424
341
88
46
27
18
17
8
2
159
18925
10715
6608
6396
4332
2277
2343
750
476
342
239
276
111
25
222
29922
18999
13371
14195
10062
5102
4862
1395
828
618
375
446
196
57
204
10795
7113
4992
5425
3818
1955
1859
531
328
206
148
157
67
19
234
21684
16048
11705
12489
8196
3773
3195
886
522
346
222
267
105
27
236
65873
37460
21748
18199
10284
4857
4368
1429
1114
925
827
1125
692
306
396
218258
143586
87472
71394
40398
19449
17683
6394
4778
3864
3394
4714
3225
1231
389
208533
137289
82458
63584
32610
14452
11491
3847
2953
2272
1728
2658
1733
631
281
66975
42528
25916
21787
12776
6228
5558
1921
1420
1190
930
1360
817
347
281
32386
19043
11022
8750
4787
2162
1968
712
550
412
386
623
444
192
147
30447
17819
10673
9279
5279
2397
1941
621
433
325
264
364
237
80
147
38647
22212
11975
8632
4302
1905
1579
540
436
328
265
392
240
95
135
43965
25235
13195
8510
3524
1304
1031
343
240
201
169
257
167
69
78
35985
19441
9922
6715
2844
1134
830
255
208
163
134
172
110
46
57
36928
20424
10546
7222
2989
1149
881
279
196
122
94
116
64
32
4
55290
38509
23099
17586
7678
2808
1952
576
443
291
198
268
143
55
1
26235
16693
10098
7908
4136
1651
1215
356
235
165
126
126
51
14
8
76305
48828
30232
24699
12442
4770
3596
1135
794
588
494
620
382
112
5
47626
27490
15705
12453
6335
2581
1889
595
392
257
197
246
105
45
11
29532
14802
7797
5936
2952
1269
978
329
251
194
174
241
158
73
19
24071
11932
5934
4200
1971
832
614
185
150
127
109
149
98
44
22
87668
53175
28327
20440
9955
4525
3689
1310
974
836
662
996
629
233
38
31381
17563
10003
8100
4111
1754
1350
462
349
245
205
276
126
59
55
242882
163841
97704
79233
41079
17983
15144
5264
3872
2950
2500
3355
2153
808
159
119398
81208
53117
51623
34879
18305
17741
7019
5689
4658
4092
6339
4714
2011
70
190465
116131
65986
50181
23196
9466
7608
2492
1844
1253
1114
1439
769
356
106
59300
31749
18174
14074
6853
2744
2167
833
542
322
331
494
289
86
112
19537
10591
6416
5353
3147
1498
1385
455
359
275
244
389
261
113
242
67135
36376
20587
18952
12589
6941
6941
2614
2212
1772
1667
2504
1927
904
301
52277
30940
17993
14756
8256
3831
3560
1376
1058
829
796
1127
762
350
265
23453
14278
9469
9303
6062
3185
3088
1163
917
770
679
1062
833
377
537
44400
30050
21458
22640
16108
8896
8659
3341
2676
2194
1836
2849
2085
947
573
63880
42718
28125
27407
18169
9309
8843
3317
2663
2172
1907
3024
2124
957
560
51131
32042
20809
20089
13678
7319
6934
2420
1823
1596
1316
1880
1236
465
446
31272
17805
11141
11271
7770
4206
3995
1511
1070
920
749
1167
723
303
379
53050
31026
17250
13679
7084
3354
2733
940
714
560
450
613
388
148
445
68960
43099
25786
21464
13155
6723
5902
1978
1462
1129
900
1221
765
267
409
55429
34419
19971
16816
9152
4442
3989
1341
1039
828
674
973
594
209
345
69802
45479
27354
21819
11962
5355
4309
1432
1035
807
644
917
544
179
235
20701
11758
7466
6970
4698
2472
2204
755
563
432
339
507
299
103
107
21164
12266
6844
5160
2634
1156
979
327
220
184
141
205
120
50
34
30273
16064
8071
5394
2444
1021
747
257
188
144
115
182
120
50
no data
35396
19911
11040
9045
5056
2357
1962
585
433
295
233
259
123
43
no data
69547
37804
19830
13970
5835
2110
1400
467
288
169
125
155
96
39
no data
27030
15754
9079
6792
3348
1472
1140
359
260
223
158
185
137
36
no data
83566
53158
33461
29083
15007
6319
5141
1755
1110
943
794
1072
872
337
no data
68527
39756
23697
21069
13274
5609
4404
1610
1202
1022
1053
1598
1365
718
no data
30684
17362
9888
7729
3872
1653
1360
403
295
220
205
272
189
68
no data
23583
12805
7050
4996
2469
987
762
268
191
133
101
153
96
37
no data
89483
51653
31113
27268
16197
7550
6461
2197
1669
1250
994
1400
736
261
no data
94430
56010
31765
24546
11025
3910
3008
896
610
471
347
520
304
98
no data
26621
14696
8358
6500
3319
1449
1252
436
316
266
177
298
174
57
no data
22513
13296
7810
6821
3630
1667
1325
426
288
226
177
276
184
74
70.00
24838
12858
6834
4596
1550
513
318
93
73
54
47
77
75
41
70.00
21594
12473
7191
4770
1691
586
415
134
90
77
64
107
81
46
76.00
13620
7514
4075
2652
905
283
199
70
41
28
31
52
35
16
125.00
27006
14195
7757
5530
2143
751
508
151
100
85
60
127
97
58
51.00
10701
5569
2959
1995
726
264
208
67
46
31
29
49
32
14
66.00
16788
10146
5864
4315
1625
553
360
102
62
49
38
62
50
22
120.00
58444
39950
25352
19550
8268
3048
2086
608
393
318
239
416
323
158
94.00
15394
10117
5935
4100
1491
520
377
128
80
56
46
72
55
28
132.00
33185
24014
15034
11750
4998
1826
1277
391
248
184
142
263
208
112
57.00
7839
5204
3289
2632
1271
537
376
112
65
44
39
53
38
14
132.00
58347
42635
27684
21787
9477
3605
2438
739
397
331
301
430
344
175
132.00
57126
42549
27771
23076
10343
4098
2917
871
508
394
324
552
427
225
47.00
11280
6599
3693
2628
1078
438
323
110
63
47
34
55
35
17
34.00
9073
5723
3569
2929
1454
631
488
141
88
63
50
64
45
21
3.90
8445
4155
2040
1442
616
244
172
44
25
15
11
16
9
3
0.71
6538
3483
1791
1285
672
187
119
38
19
8
9
15
13
3
0.29
6636
2985
1445
964
420
159
123
39
18
13
12
16
8
4
0.90
1614
898
532
467
282
100
60
18
8
6
5
7
5
2
6.70
4917
2536
1365
963
365
135
86
29
16
9
10
13
10
5
41.00
16909
11151
7091
6101
2902
1208
1029
374
231
189
166
328
270
149
119
0.5 ‐ 16
19665
14376
4037
3060
52611
8437
3523
17172
6355
3384
26370
8698
76023
5257
41237
6508
333688
22732
53791
100372
37393
79439
168902
624608
565608
189406
83245
80080
91454
98143
77913
81010
148842
68995
204886
115870
64613
50371
213187
75926
677959
408781
471945
137872
49909
182217
137562
74261
167192
213659
162274
93597
131839
192544
149668
191458
59163
51402
65021
86695
151795
65936
232280
184185
74133
53594
237971
227839
63862
58639
51925
49272
29504
58510
22675
40015
158995
38370
93519
21498
168515
170956
26383
24319
17235
14175
12838
4001
10454
47948
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Sampling
Date
1/23/03
1/28/03
2/20/03
3/15/03
3/21/03
3/24/03
3/26/03
3/26/03
4/10/03
5/17/03
5/24/03
5/29/03
5/31/03
6/1/03
6/7/03
6/15/03
6/26/03
7/8/03
8/14/03
8/21/03
8/21/03
10/22/03
11/28/03
12/6/03
12/19/03
1/22/04
3/11/04
3/18/04
3/22/04
4/6/04
4/12/04
4/21/04
4/24/04
4/25/04
4/27/04
4/28/04
5/4/04
5/5/04
5/13/04
5/20/04
5/31/04
6/10/04
8/19/05
8/15/05
9/15/05
11/8/05
11/16/05
11/29/05
11/30/05
12/1/05
12/1/05
12/1/05
12/1/05
12/2/05
12/19/05
12/21/05
12/21/05
12/22/05
12/22/05
12/22/05
12/23/05
12/28/05
12/28/05
12/30/05
12/30/05
12/31/05
1/1/06
1/27/06
2/3/06
2/27/06
2/27/06
2/27/06
2/28/06
3/24/06
4/3/06
4/3/06
4/27/06
5/4/06
5/8/06
5/12/06
5/15/06
5/20/06
5/26/06
6/1/06
6/7/06
6/15/06
6/21/06
6/30/06
7/13/06
8/14/06
Flow
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
(cfs)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
37.00
16841
11128
7309
6202
2919
1134
870
259
169
127
106
171
130
70
42.00
8029
4999
3452
3064
1134
381
268
75
50
35
31
47
38
19
9.70
8867
4829
2714
1852
653
208
136
37
19
15
12
19
12
6
42.00
23346
12944
7269
5604
2507
1041
854
294
189
142
129
188
154
76
16.00
5238
2779
1499
1087
474
182
140
42
25
20
14
23
13
6
39.00
8735
5069
2936
2211
971
366
285
90
57
42
35
44
35
15
176.00 150320
92952
57509
48877
26925
13584
13557
5331
3475
2973
2827
4501
3488
1816
140.00
77171
45720
27361
21956
11300
4905
4532
1579
1132
929
716
1125
811
389
38.00
10903
5105
2630
1834
724
286
203
54
31
28
14
29
17
8
88.00
10785
5777
3375
2770
1362
573
524
176
125
90
72
114
75
33
164.00
32495
17675
10377
8437
4385
2035
1891
624
425
345
273
431
285
124
225.00
23565
14162
8870
7529
3970
1823
1675
583
371
279
233
340
241
101
161.00
16674
9273
5499
4772
2769
1397
1376
472
327
242
196
305
206
88
205.00
23989
13553
8039
6601
3266
1509
1488
531
365
275
225
383
258
101
191.00
22335
13806
8782
7886
4370
2044
1906
680
453
344
280
435
284
121
62.00
16835
9058
5101
3582
1394
509
386
118
56
47
37
43
28
14
25.00
11054
5488
2835
2012
715
239
166
42
30
19
18
19
12
5
8.90
1568
772
435
438
391
253
170
35
20
14
11
16
9
4
1.30
7511
3400
1493
894
333
105
64
17
9
5
3
6
4
1
2.80
11381
6874
5289
6105
4275
2077
1809
624
389
323
312
475
345
178
4.50
180783
124800
85963
82903
48227
23463
21567
6637
4567
3007
2527
3907
2277
867
0.71
6316
2651
1226
744
271
90
62
11
11
8
5
8
8
3
1.80
8790
3981
1771
972
295
88
56
14
11
6
5
5
3
3
18.00
135287
69947
41560
36607
20367
9387
7647
2320
1147
1093
707
1007
720
293
2.80
7499
4050
2137
1512
586
194
128
31
17
12
8
12
7
3
2.80
7655
4254
2390
1738
679
228
163
43
27
19
18
25
12
5
12.00
20492
11225
6566
5107
2191
833
622
171
105
66
52
69
45
25
34.00
19077
10540
6577
5561
2911
1377
1255
477
314
251
241
379
315
163
56.00
23007
12596
7639
6165
3117
1443
1291
496
305
249
199
372
292
135
65.00
8546
4399
2637
2426
1448
692
625
195
131
84
83
115
75
32
72.00
14708
7397
4253
3493
1783
829
778
271
181
143
126
191
147
74
33.00
12480
6101
3209
2421
998
409
330
135
83
60
29
60
30
17
41.00
34909
20449
11102
7675
2966
1049
739
247
189
137
95
137
68
23
51.00
25461
13763
7557
5461
2429
870
733
212
141
93
78
116
76
33
89.00
37623
24979
17476
18425
12337
6901
7415
2845
2143
1693
1489
2524
1873
879
100.00
8511
4631
2829
2563
1414
697
655
212
144
105
89
127
81
40
139.00
22179
12089
7347
6275
3406
1702
1497
513
321
266
214
315
231
103
138.00
47324
30752
19523
18055
10929
5712
5798
2217
1572
1183
1001
1634
1177
570
57.00
18645
9539
4952
3598
1468
573
470
133
93
49
59
76
63
26
58.00
16284
10769
6885
5238
2319
929
759
239
133
102
87
127
61
22
63.00
7287
4643
3169
2793
1392
534
445
152
92
59
48
70
42
23
35.00
12073
6062
3335
2463
1150
519
428
131
81
61
52
68
45
17
2.10
8290
3812
2162
1540
722
260
220
58
28
37
22
28
7
3
2.60
42385
17290
8878
6220
2270
642
357
88
57
23
23
32
27
7
1.10
8415
4282
1892
1060
322
125
115
25
23
27
17
30
12
5
4.70
33923
13478
6368
3783
1547
570
365
82
55
42
32
30
25
5
1.50
10603
4958
2687
1915
868
315
233
43
35
25
25
27
23
10
25.00
93285
54763
32358
26047
12363
5120
4255
1445
897
723
633
955
582
278
6.10
16387
7220
3633
2593
1273
587
640
307
113
100
107
160
173
73
26.00
161653
82187
44587
33087
16093
7040
7140
2780
1693
1207
1047
1427
1313
500
52.00
157200
81420
45000
33147
14740
7287
7067
2367
1747
1420
1220
1800
1147
540
137.00 156567
78727
44460
33347
15487
6647
6693
2473
1707
1567
1153
1893
1360
387
281.00 251940
140513
83580
68973
35233
16293
16480
6547
4413
3520
3167
4800
3227
1153
35.00
52787
22147
10487
5800
1913
653
493
140
53
53
33
100
27
40
35.00
31167
15550
8247
6580
3027
1157
947
287
117
103
63
137
93
43
46.00
90910
49107
27503
21237
10440
4580
4333
1627
1097
873
757
1140
863
407
339.00 127067
76957
50857
47753
28273
15580
16617
6473
4507
3727
3320
5487
3937
1557
382.00 164197
104453
68820
64273
37613
20143
20483
7797
5260
3940
3340
5223
2963
1190
648.00 165453
107440
71380
67877
41273
22770
23243
9360
6630
5543
5033
7853
5443
2437
769.00 528200
481673
366333
373633
233520 123867 128293
49173
34193
26700
23060
36240
23653
9547
122.00
23707
11833
6063
4237
1783
910
850
317
200
147
130
237
160
50
254.00
94047
48710
27920
21807
11937
5813
5550
1800
1197
843
727
1023
550
270
258.00
83563
42577
23453
18520
9533
4357
4080
1443
900
683
590
683
463
133
309.00 109728
66455
39682
33155
17523
8325
7300
2253
1510
1075
905
1123
585
190
864.00 619933
414217
252842
208692
108042
50567
44808
14767
8958
7117
5433
7192
3525
1317
1,410.00 110080
415480
657795
950130
620465 294000 252120
77130
45995
32065
23990
29320
12810
3415
222.00
90842
45978
23465
15585
6520
3003
2512
800
500
322
207
228
118
32
35.00
30710
15947
8573
6103
2550
927
677
150
83
93
60
37
27
17
46.00
22777
10942
5627
3792
1427
457
365
108
70
55
47
58
35
20
173.00 300140
171040
99727
82780
46060
21867
20213
6373
3667
2507
2087
2933
1647
493
335.00
35513
18807
11513
9193
6040
3700
11360
1093
753
520
500
867
520
293
370.00 361573
212360
123487
96027
49447
22867
21927
7587
5180
3580
3053
4580
2887
900
262.00 173647
92200
52433
41240
19473
8607
7580
2327
1513
1047
800
1073
580
187
35.00
23697
12457
6667
4490
1803
672
390
122
63
42
30
52
28
8
140.00 180067
105633
66220
54800
28060
13193
11687
3707
2173
1533
1173
1700
767
287
140.00
52323
27640
15187
10477
4450
1683
1337
420
247
110
127
173
87
23
118.00
49583
24567
13920
11260
6337
3113
2987
1000
670
493
433
667
433
203
137.00
36173
19140
10640
8253
3847
1400
1367
360
253
127
120
193
127
67
159.00
80427
45373
29327
27707
18213
10207
9800
3313
2220
1553
1320
1807
1200
380
161.00
46633
21760
11373
8720
3900
2053
1733
533
327
300
233
380
140
67
262.00 107767
61613
36500
30520
16580
8173
7420
2147
1487
847
833
1093
653
200
285.00 113453
66140
37253
29393
13513
5640
4767
1387
747
700
447
673
253
127
140.00
27877
15133
9663
7997
3877
1687
1287
377
233
160
117
113
70
17
215.00
29493
15783
9137
7493
3943
1790
1763
527
357
253
160
257
210
70
258.00
68413
33933
17800
12687
5380
2260
1580
587
267
180
240
240
153
60
102.00
42407
25180
14793
12480
6800
3047
2720
773
420
393
267
327
193
40
156.00
46060
25327
14547
11413
4753
1847
1480
460
233
200
147
160
147
53
59.00
13933
7220
4340
3637
1627
630
650
183
123
97
103
190
63
50
20.00
9937
4497
2273
1623
693
237
163
47
27
27
10
23
13
3
3.20
8467
4375
2590
2080
1260
433
400
102
60
40
27
30
17
3
120
0.5 ‐ 16
47365
21603
19373
54662
11538
20875
426320
199237
21857
25819
79679
63641
43507
60482
63605
37193
22648
4131
13845
40276
590627
11412
15996
327793
16192
17252
47545
49275
57173
21458
34298
26347
79763
56991
137722
22057
56357
146877
39718
43930
20726
26466
17185
78292
16343
60300
21758
233427
33293
361253
355560
352080
638687
94687
67473
214467
390553
508507
539300
2428540
50573
221923
190847
289620
1746092
3521380
190080
65937
45758
761040
100380
914553
402520
50512
470713
114260
115463
82000
232467
98087
275633
274367
68590
71167
143720
109800
106773
32797
19570
19880
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Sampling
Date
9/15/06
10/20/06
11/3/06
11/14/06
11/8/06
11/13/06
11/13/06
12/14/06
1/22/07
2/9/07
2/10/07
2/20/07
2/20/07
2/20/07
3/13/07
3/13/07
3/13/07
3/13/07
3/26/07
4/3/07
4/25/07
5/1/07
5/9/07
5/10/07
5/17/07
5/18/07
5/23/07
5/31/07
6/11/07
7/13/07
8/13/07
9/22/07
10/12/07
10/19/07
11/11/07
11/14/07
12/5/07
1/4/08
1/15/08
2/14/08
3/20/08
4/7/08
4/14/08
4/28/08
5/6/08
5/7/08
5/9/08
5/14/08
5/16/08
5/16/08
5/8/08
5/18/08
5/18/08
6/6/08
6/9/08
7/7/08
8/20/08
10/3/08
10/4/08
10/23/08
11/1/08
11/1/08
11/2/08
12/3/08
1/7/09
1/22/09
1/23/09
1/24/09
2/9/09
2/23/09
2/24/09
3/2/09
3/2/09
3/13/09
4/1/09
4/17/09
4/20/09
4/24/09
5/1/09
5/1/09
5/2/09
5/2/09
5/3/09
5/5/09
5/5/09
5/6/09
5/7/09
5/12/09
5/18/09
5/26/09
Flow
(cfs)
1.40
1.80
3.20
14.00
7.80
5.80
39.00
28.00
19.00
73.00
127.00
12.00
12.00
12.00
17.00
18.00
18.00
17.00
35.00
33.00
36.00
85.00
79.00
56.00
58.00
51.00
37.00
37.00
13.00
1.70
0.19
0.97
1.10
3.20
4.80
2.10
1.30
3.60
2.10
1.90
7.40
17.00
43.00
75.00
80.00
91.00
77.00
84.00
136.00
136.00
80.00
150.00
150.00
40.00
37.00
4.60
0.13
3.90
3.90
0.58
8.30
8.30
19.00
5.60
2.20
8.20
9.40
9.80
5.30
22.00
20.00
46.00
46.00
10.00
25.00
27.00
68.00
74.00
118.00
118.00
186.00
186.00
264.00
314.00
314.00
168.00
138.00
107.00
152.00
82.00
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
183173
135293
83168
67628
31528
12570
7803
1620
832
465
298
335
158
42
52687
24113
13080
9920
3493
1420
1107
327
213
133
140
113
93
7
84140
41273
20183
13143
4617
1790
1103
280
160
107
103
97
23
20
110600
46680
24387
18733
8600
3907
3907
973
613
400
227
467
373
200
81467
42160
21680
14720
4667
1867
1280
600
320
320
227
267
213
67
141707
74307
43920
36600
19587
8373
6733
1813
947
813
600
773
507
120
625067
364200
232000
214533
139973
78520
81987
29080
19493
15000
12347
17880
10827
4013
62567
33093
19267
15153
8460
3893
3433
820
607
407
340
347
313
87
19197
10373
5333
3713
1420
493
393
110
83
47
53
60
20
23
23465
9511
4798
3363
1536
617
529
162
82
61
57
57
41
15
7784
3812
2208
1641
790
323
306
97
51
53
43
50
31
18
60480
25400
12413
9090
3497
1240
727
127
67
67
53
80
27
3
38697
16303
8150
6363
3170
1357
1080
303
193
120
130
123
73
23
27557
12407
6403
4497
1887
697
487
180
80
73
37
63
37
10
22063
12330
7537
5340
1610
547
280
143
97
57
53
77
30
13
20790
10230
5217
3170
1307
557
390
163
97
93
60
103
37
27
2390
1317
857
703
310
113
77
40
13
17
27
10
0
0
6093
3577
2040
1840
843
383
320
60
23
50
23
23
17
0
14868
7885
4419
3375
1568
675
600
164
85
63
61
72
44
17
13030
5957
3143
2157
1070
433
327
153
80
50
40
77
47
17
10711
4955
2433
1656
684
286
288
93
59
41
37
61
29
19
34063
20489
12407
10288
5089
2273
2053
613
389
297
243
375
249
132
26848
15429
9217
7655
4009
1784
1511
475
313
229
188
332
198
81
12408
6591
3820
2989
1372
517
436
125
91
54
47
64
42
13
15947
8466
4579
3389
1491
599
506
144
83
63
61
84
54
20
13246
6582
3405
2307
968
335
274
78
54
33
27
56
42
16
3472
2425
1479
926
336
109
83
26
18
13
13
16
13
7
3700
2812
1842
1420
678
281
221
66
43
30
24
36
24
11
4395
2801
1351
789
307
130
100
31
22
16
12
20
13
6
1327
502
252
177
76
28
21
5
3
2
1
2
1
0
585
204
96
67
26
10
8
2
1
1
1
1
1
0
1257
513
246
171
65
25
22
8
6
5
5
9
9
5
564
193
90
57
22
8
8
3
2
2
1
3
3
2
22688
9141
4469
3435
1575
579
438
126
63
45
39
56
22
10
7597
3461
1619
1212
636
275
214
55
37
26
19
24
14
6
1372
565
280
206
94
32
23
5
3
2
2
2
1
1
955
325
153
108
53
17
12
2
2
1
1
1
0
0
20486
10623
5998
5208
2819
1173
955
243
147
82
49
50
15
3
832
333
178
138
68
27
20
6
4
3
2
3
2
1
1453
647
339
280
139
64
61
16
10
8
5
7
4
1
2400
992
448
289
113
40
30
8
5
5
3
6
4
2
2020
994
543
414
206
79
63
17
10
7
5
7
4
2
7913
4092
2442
2326
1462
730
705
202
122
81
50
54
18
4
13212
7463
4341
3811
2299
1087
979
275
155
99
57
57
19
2
19311
14525
10907
12296
8929
4805
4826
1422
888
553
353
357
101
20
15573
9838
6822
7442
5306
2852
2899
922
577
403
292
299
90
18
3318
1799
953
789
431
189
158
46
27
20
15
22
14
7
13133
8704
5042
3843
1830
788
575
183
148
108
97
142
104
43
36443
22279
13288
12191
8016
4205
3915
1484
1152
892
764
1198
797
352
53951
35567
23313
23266
16329
8869
8665
3322
2658
2237
1967
3143
2323
989
51682
32300
20202
19143
12467
6581
6343
2478
1974
1606
1409
2335
1629
767
17872
10543
5910
4604
2433
1055
887
309
223
192
159
255
186
87
21738
12482
7079
5592
2917
1346
1108
392
292
241
177
294
208
91
5484
3550
2242
1747
801
301
195
67
45
33
24
39
25
12
2812
1884
1181
1014
524
244
186
51
32
22
17
22
15
5
4296
2481
1130
648
279
109
78
21
14
10
7
10
6
3
7852
4276
1997
1064
352
120
81
25
15
10
7
11
6
3
58878
43977
28663
22293
8645
2599
1477
358
236
180
114
191
116
61
70722
37423
19791
15341
8035
3413
2395
668
486
377
324
475
289
133
2092
813
310
174
73
25
17
5
3
2
2
2
2
1
392754
289755
161144
114782
54720
23749
18299
5869
4230
3072
2286
3217
1872
775
177889
109442
66114
58673
38188
20475
19554
7451
5758
4739
4264
6266
4337
2108
102407
50223
24930
17733
9802
5369
4914
2061
1572
1383
1183
1911
1467
753
1921
895
428
308
164
70
55
18
12
9
7
10
5
3
7605
4201
2153
1417
573
183
109
29
20
14
12
15
11
4
13515
7573
3989
2531
966
339
242
80
52
44
35
51
45
17
20525
12758
7237
5232
2276
846
637
210
157
119
108
166
102
46
14525
7463
3638
2356
925
360
271
87
58
57
48
69
47
25
5885
3220
1720
1286
642
254
204
64
50
42
34
51
33
17
25183
13605
7194
5077
2414
1011
802
295
219
161
159
225
149
64
6203
3461
1940
1512
871
435
445
182
151
135
128
216
166
76
29239
17847
10127
8088
4298
2029
1835
688
545
490
413
674
513
219
51259
33871
19885
15348
8367
3868
3403
1238
971
867
757
1249
958
480
9187
5217
2798
1881
795
295
216
57
41
35
26
36
21
9
3562
2313
1272
886
402
167
131
43
30
25
18
27
15
7
7323
4022
2241
1677
838
335
273
95
71
61
42
71
57
30
114218
66925
38457
31182
18408
9239
8727
3186
2425
2164
1839
2930
2297
1006
16747
9212
4956
3706
1821
855
689
255
205
149
119
231
151
71
75958
46373
29335
27879
18749
9575
9552
3661
3089
2658
2514
4341
3053
1458
129053
76730
46456
42832
26910
15136
15633
6314
5250
4733
4341
7097
5983
2975
40133
22781
13489
11313
6617
3137
2810
1033
816
694
545
876
555
286
23423
13580
8063
6212
3006
1105
863
275
218
187
140
219
181
70
139728
84374
49395
43615
26632
13749
12919
4936
3711
3358
2819
4119
2755
1175
143525
98432
66531
65156
45559
24385
22963
8486
6433
5211
4469
6616
4191
1867
119259
81427
54173
52170
33890
17144
15605
5436
4053
3280
2622
3697
2503
1056
39578
22450
13560
12117
7509
3786
3314
1188
722
598
533
706
469
186
37121
21216
13022
10736
5541
2500
1997
653
444
344
253
436
261
97
11390
7230
4569
4292
2820
1466
1270
448
340
261
229
337
222
90
48172
29998
17990
16176
10092
5046
4584
1647
1238
1001
848
1248
817
339
14688
9006
5149
4055
1993
825
602
201
146
110
90
147
78
40
121
0.5 ‐ 16
524873
106840
167020
219867
169787
336680
1840907
148700
41297
44279
17188
113267
76063
54403
50163
42213
5873
15293
33878
26563
21333
88829
68188
28557
35467
27406
8930
11176
9987
2398
1003
2340
957
42675
15188
2588
1630
47849
1614
3034
4345
4369
20194
33855
79271
53315
7781
34695
106625
185611
160149
44630
53866
14552
8004
9089
15815
167729
159740
3518
1075749
523151
224955
3903
16339
29462
50374
29905
13485
56494
15844
76785
142041
20605
8891
17104
301996
39097
236738
386468
104800
57472
392112
501958
395259
106529
94524
34873
138856
37090
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX C. Analytic results of laser particle size analysis (LiQuilaz) on Tahoe Basin
stream samples (LTIMP) (continued).
Stream
ID
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Ward
Sampling
Date
6/8/09
7/7/09
8/10/09
9/8/09
10/8/09
10/13/09
10/13/09
10/13/09
10/14/09
11/6/09
12/3/09
1/13/10
2/4/10
3/4/10
Flow
(cfs)
45.00
7.60
0.71
0.61
0.51
20.00
20.00
20.00
17.00
1.40
1.50
5.70
3.40
5.90
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
8187
4555
2343
1738
947
433
386
134
103
75
64
89
58
26
3172
1690
770
487
228
89
72
21
13
10
7
9
5
2
2893
1324
564
396
198
80
57
17
12
9
8
10
6
3
3612
1893
793
463
204
74
48
14
9
8
6
10
5
2
1748
671
270
154
60
21
13
4
3
3
2
3
2
1
53771
31898
18136
13368
5408
1876
1190
280
198
169
125
147
102
47
106366
59234
34906
31514
19348
9641
8221
2955
2233
1835
1647
2725
2076
1051
71897
162019
235404
416717
402462 235096 265706 101557
79841
65317
53990
81166
49767
19205
59917
28771
14952
11119
6189
2978
2444
789
561
550
419
589
469
156
3403
1920
886
485
173
51
33
9
6
5
4
5
4
1
1815
781
343
224
99
36
27
8
6
4
4
5
3
1
16997
9978
5509
3802
1612
564
427
140
96
80
65
91
68
27
2194
1055
460
276
108
38
28
8
6
5
3
5
3
1
7036
3847
1955
1288
527
174
131
40
27
22
16
27
16
7
122
0.5 ‐ 16
19111
6573
5574
7138
2954
126669
282701
2220939
129748
6982
3355
39428
4190
15105
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site).
MLTP
ID
323
323
323
323
323
323
323
323
323
323
323
323
323
323
324
324
324
324
324
324
324
324
324
324
324
324
324
324
325
325
325
325
325
325
325
325
325
325
325
325
325
325
326
326
326
326
326
326
326
326
326
326
326
326
326
326
327
327
327
327
327
327
327
327
327
327
327
327
327
327
328
328
328
328
328
328
328
328
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Sample Depth
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
6/4/02
0
2776
1391
833
741
314
107
67
22
11
7
5
6
3
1
6/4/02
10
2862
1713
1056
842
367
139
108
41
21
14
9
11
7
2
6/4/02
20
2894
1711
997
764
354
137
102
41
22
13
9
14
7
4
6/4/02
30
2468
1470
898
703
346
140
95
30
20
11
9
14
9
3
6/4/02
40
4599
3010
2009
1769
857
313
189
45
23
16
11
21
14
5
6/4/02
50
3554
2595
1849
1497
677
243
164
45
25
15
12
16
12
4
6/4/02
100
9406
5247
2682
1858
773
293
222
62
35
28
23
34
18
10
6/4/02
150
2484
1283
671
456
191
89
74
22
13
9
8
10
4
2
6/4/02
200
2605
1228
605
441
218
112
98
30
17
11
10
13
9
3
6/4/02
250
1869
882
439
285
111
51
45
14
10
6
5
7
4
1
6/4/02
300
3210
1598
757
517
234
105
83
25
12
10
9
13
8
3
6/4/02
350
1372
638
320
226
109
49
37
11
7
6
5
7
4
2
6/4/02
400
3920
2106
1040
676
253
104
79
23
13
10
9
13
7
3
6/4/02
450
3582
1773
837
478
181
64
44
12
8
5
6
6
4
1
7/1/02
0
2438
1336
828
765
411
114
62
17
9
7
7
8
4
2
7/1/02
10
4200
2704
1647
1426
715
231
136
38
23
16
12
21
12
4
7/1/02
20
3925
2358
1407
1225
631
195
121
45
21
15
10
14
8
2
7/1/02
30
4184
2582
1581
1263
593
253
169
56
39
24
19
28
17
8
7/1/02
40
7499
4712
2880
2255
1152
452
297
91
53
35
28
42
25
9
7/1/02
50
5476
3450
2157
1672
733
325
258
74
40
28
21
36
25
10
7/1/02
100
5031
3119
1759
1316
573
221
177
54
34
24
22
33
20
8
7/1/02
150
4691
2768
1556
1098
461
185
144
44
27
20
13
23
13
5
7/1/02
200
5163
3280
1916
1492
703
271
202
60
37
26
22
32
18
7
7/1/02
250
3266
1738
931
664
278
118
83
22
15
11
8
12
8
3
7/1/02
300
3374
1866
984
737
325
133
107
35
22
17
14
21
12
6
7/1/02
350
1919
915
475
332
144
54
44
14
8
6
5
6
5
1
7/1/02
400
2678
1262
628
458
212
87
63
18
12
7
6
10
5
2
7/1/02
450
3227
1776
946
687
290
104
70
21
13
9
8
9
5
3
8/21/02
0
2672
1528
1020
1183
570
173
96
20
11
7
6
5
3
1
8/21/02
10
3749
2282
1506
1645
821
296
177
43
22
14
13
16
7
3
8/21/02
20
3679
2065
1275
1437
801
220
127
32
15
11
9
12
6
2
8/21/02
30
3973
2126
1364
1490
963
291
166
37
21
16
12
15
8
2
8/21/02
40
4139
2051
1343
1396
933
288
165
43
19
15
10
15
9
3
8/21/02
50
4696
2764
1951
1820
1092
373
217
61
30
19
16
23
14
3
8/21/02 100
4114
2649
1240
881
398
160
127
36
17
13
11
13
8
3
8/21/02 150
1635
4906
2496
1491
1118
476
204
175
55
33
21
22
29
18
8/21/02 200
5741
3591
2108
1665
1433
505
325
90
48
37
27
47
29
15
8/21/02 250
2777
1327
740
632
326
154
118
37
20
14
12
19
11
3
8/21/02 300
3629
2489
1437
1155
536
216
132
34
19
11
10
13
8
3
8/21/02 350
1058
480
251
193
89
41
35
11
6
6
4
7
4
2
8/21/02 400
2739
1381
698
491
216
83
61
17
9
7
5
7
3
2
8/21/02 450
3392
2027
1180
924
399
159
107
27
13
11
9
11
7
3
9/11/02
0
3478
2209
1376
1436
675
197
110
26
16
12
10
14
5
2
9/11/02
10
4390
2506
1662
1928
1000
272
129
30
15
11
7
10
7
3
9/11/02
20
4134
2666
1672
1584
809
277
165
42
26
16
15
20
11
6
9/11/02
30
3818
2088
1283
1204
678
217
131
29
19
12
10
13
7
2
9/11/02
40
3027
1672
1156
1076
595
190
113
28
13
10
7
11
6
2
9/11/02
50
3937
2151
1290
1461
818
226
121
36
21
11
9
13
7
2
9/11/02 100
4321
2903
1819
1410
641
262
188
51
25
16
14
22
13
4
9/11/02 150
5924
3776
2250
1687
641
229
155
43
24
17
13
20
11
5
9/11/02 200
5385
3065
1990
1754
829
263
161
48
23
17
13
20
10
3
9/11/02 250
1627
695
338
251
108
44
38
12
7
5
3
5
3
1
9/11/02 300
2478
1310
721
514
207
79
54
14
7
6
5
7
4
2
9/11/02 350
3912
2101
1092
830
345
128
83
22
12
10
7
12
7
3
9/11/02 400
3345
1657
880
831
353
101
70
20
10
7
5
8
4
3
9/11/02 450
2319
1167
593
429
179
71
50
14
6
5
3
6
4
1
10/3/02
0
2683
1473
1057
1508
717
172
82
19
9
7
5
6
2
1
10/3/02
10
3999
2338
1755
2344
1108
313
167
40
23
14
12
16
7
2
10/3/02
20
3581
2058
1425
1746
750
192
105
24
12
9
8
7
4
1
10/3/02
30
3160
1642
1211
1477
738
197
103
24
14
8
6
9
4
1
10/3/02
40
3559
1867
1227
1328
768
210
111
28
15
9
8
11
7
3
10/3/02
50
4145
2197
1467
1546
926
227
123
32
18
11
8
10
6
2
10/3/02 100
4424
2782
1491
1145
548
218
158
45
24
15
13
18
11
3
10/3/02 150
1755
860
473
339
147
57
46
15
8
6
5
6
5
2
10/3/02 200
2219
1058
543
403
181
74
57
16
9
6
7
9
6
1
10/3/02 250
1550
783
398
283
125
51
41
11
7
4
4
5
3
2
10/3/02 300
2605
1287
670
472
208
81
55
14
8
6
5
7
4
2
10/3/02 350
3810
2085
1155
878
358
136
91
26
13
11
10
14
7
3
10/3/02 400
3755
2053
1182
1022
407
133
91
25
12
8
7
10
7
2
10/3/02 450
4736
2697
1576
1382
643
206
139
38
22
14
12
18
9
4
11/4/02
0
3244
1707
1252
1242
555
172
107
26
14
8
7
11
6
1
11/4/02
10
5319
3093
2100
1928
806
258
171
42
22
15
12
17
7
3
11/4/02
20
4629
2700
1850
1711
743
241
159
37
18
15
11
14
7
3
11/4/02
30
3915
1970
1250
1165
585
197
117
31
18
13
9
10
5
3
11/4/02
40
5150
2490
1520
1467
779
237
142
40
24
15
10
13
5
1
11/4/02
50
6033
2256
1201
1251
745
217
123
29
18
10
7
8
4
1
11/4/02 100
1776
1087
592
468
221
99
88
24
13
9
7
10
8
3
11/4/02 150
1385
757
411
281
114
44
39
12
6
4
3
5
4
1
123
0.5 ‐ 16
6284
7193
7069
6217
12880
10708
20691
5318
5397
3729
6583
2792
8256
7002
6007
11186
9980
10816
19529
14307
12390
11049
13228
7157
7654
3928
5447
7169
7295
10592
9692
10483
10431
13079
9671
12680
15662
6189
9690
2187
5716
8269
9565
11968
11443
9510
7907
10105
11689
14795
13583
3136
5407
8566
7294
4846
7740
12138
9922
8594
9150
10717
10895
3724
4592
3267
5424
8598
8714
11497
8350
13791
12136
9288
11895
11904
4405
3066
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
328
328
328
328
328
328
329
329
329
329
329
329
329
329
329
329
329
329
329
329
330
330
330
330
330
330
330
330
330
330
330
330
330
330
331
331
331
331
331
331
331
331
331
331
331
331
331
331
332
332
332
332
332
332
332
332
332
332
332
332
332
332
333
333
333
333
333
333
333
333
333
333
333
333
333
333
334
334
334
334
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
11/4/02 200
1680
900
502
353
143
56
46
15
8
5
4
5
3
1
11/4/02 250
1258
629
324
232
98
41
30
10
6
5
4
6
3
2
11/4/02 300
1258
642
470
583
270
89
53
16
11
5
5
6
5
2
11/4/02 350
1192
559
256
171
75
29
20
7
4
3
2
3
2
1
11/4/02 400
1535
817
425
298
134
52
37
11
5
3
3
4
3
1
11/4/02 450
1158
590
308
225
99
42
29
7
4
2
2
2
1
1
12/3/02
0
3424
1811
1218
1078
468
173
119
33
19
13
9
12
6
2
12/3/02
10
5551
3509
2253
1891
852
303
204
52
27
21
16
23
12
4
12/3/02
20
5795
3805
2441
2077
900
324
213
57
33
24
19
25
12
6
12/3/02
30
3674
2045
1355
1181
507
191
129
33
19
15
12
15
6
3
12/3/02
40
3424
1866
1282
1125
488
177
127
36
18
16
10
14
7
3
12/3/02
50
4629
3033
1911
1862
1042
360
214
56
34
23
18
26
15
7
12/3/02 100
2039
1356
741
624
329
143
114
31
16
9
9
13
9
4
12/3/02 150
2590
1423
854
702
310
121
87
25
12
9
7
9
7
3
12/3/02 200
2562
1556
1023
920
450
173
116
33
16
12
11
15
8
3
12/3/02 250
2647
1507
881
720
326
126
88
25
15
11
8
14
8
3
12/3/02 300
2878
1706
1102
1091
427
134
81
20
11
9
8
10
6
2
12/3/02 350
4048
2515
1414
1032
412
150
97
30
18
16
13
19
12
5
12/3/02 400
2641
1471
818
630
295
114
74
20
11
8
7
10
6
3
12/3/02 450
3346
1971
1128
894
383
143
86
21
11
9
7
10
6
3
1/7/03
0
2762
1383
797
723
310
103
68
17
8
5
5
7
4
2
1/7/03
10
3549
1769
991
840
367
133
94
23
15
10
8
12
7
3
1/7/03
20
3179
1534
826
639
276
98
68
21
10
8
6
9
6
2
1/7/03
30
3077
1541
857
701
316
111
78
20
11
7
6
8
4
2
1/7/03
40
3654
1761
960
795
350
117
84
22
14
9
8
12
7
3
1/7/03
50
3983
2103
1210
1039
428
141
97
25
16
10
8
12
7
3
1/7/03
100
2222
1260
667
473
205
75
53
15
8
6
6
9
6
2
1/7/03
150
1335
603
289
181
71
30
26
8
5
3
4
6
4
2
1/7/03
200
1987
852
398
247
105
45
38
13
8
6
6
9
5
3
1/7/03
250
3040
1640
849
552
202
69
53
15
10
6
7
12
7
3
1/7/03
300
4172
2370
1437
1285
678
304
212
56
32
19
16
24
16
5
1/7/03
350
2589
1211
582
428
184
74
56
16
11
8
7
8
5
3
1/7/03
400
1905
834
353
209
72
24
19
6
4
3
2
2
2
1
1/7/03
450
2944
1332
588
329
127
53
40
14
9
7
6
8
7
2
2/4/03
0
3597
2173
1346
1265
569
200
152
46
29
18
17
26
19
7
2/4/03
10
5612
3266
1800
1373
612
234
159
46
24
18
14
21
13
12
2/4/03
20
3653
2198
1270
1078
448
158
128
40
25
17
17
27
17
4
2/4/03
30
3538
2164
1234
1076
454
150
106
33
19
13
11
20
12
5
2/4/03
40
3693
2184
1235
1044
445
148
112
28
17
12
12
17
11
4
2/4/03
50
3738
2146
1253
1135
520
187
140
44
25
21
15
26
16
6
2/4/03
100
5897
3354
1867
1443
657
256
179
47
27
21
16
26
17
7
2/4/03
150
2054
1013
558
463
239
124
113
40
23
19
15
28
17
8
2/4/03
200
5800
3517
1996
1517
592
222
183
63
46
35
32
50
34
14
2/4/03
250
3628
2659
2223
2647
1337
576
502
167
103
82
66
111
73
26
2/4/03
300
3279
1824
1103
968
393
159
124
37
23
18
16
21
19
6
2/4/03
350
3341
1774
988
813
394
174
135
48
28
20
18
30
16
8
2/4/03
400
5384
3881
2914
2658
1092
401
321
93
52
35
28
41
24
10
2/4/03
450
2975
1591
964
839
357
145
119
37
23
16
11
21
11
3
3/12/03
0
2342
1461
942
840
366
134
95
26
14
11
7
12
6
3
3/12/03
10
3880
2416
1364
1079
528
199
147
39
22
14
12
19
12
6
3/12/03
20
2587
1636
967
856
430
150
113
30
17
10
9
13
7
3
3/12/03
30
2782
1717
1031
900
431
154
120
31
14
11
7
13
9
4
3/12/03
40
2562
1604
1000
857
411
146
120
28
17
11
10
13
10
3
3/12/03
50
3310
1986
1168
1029
452
163
119
30
19
12
10
16
9
3
3/12/03 100
2055
1161
648
520
277
125
95
27
14
9
6
11
7
3
3/12/03 150
911
451
220
165
89
38
30
10
4
3
3
4
4
2
3/12/03 200
1548
698
334
211
75
32
22
8
5
3
2
4
3
2
3/12/03 250
1847
911
439
277
112
38
29
10
5
3
4
6
3
1
3/12/03 300
1201
543
272
200
78
30
23
7
4
3
2
4
2
2
3/12/03 350
1160
531
243
179
79
31
23
7
4
3
3
4
2
1
3/12/03 400
1319
655
307
197
81
30
21
6
3
2
1
3
2
1
3/12/03 450
2313
1120
545
357
147
59
42
14
6
6
4
6
4
2
4/10/03
0
2752
1341
802
609
299
134
94
22
13
9
7
9
5
1
4/10/03
10
4297
2314
1322
1015
420
165
120
30
19
12
11
15
9
3
4/10/03
20
3207
1880
1154
894
404
173
124
29
17
12
9
10
8
2
4/10/03
30
3972
2291
1211
900
417
192
152
38
23
17
13
17
8
2
4/10/03
40
2743
1568
959
748
364
164
130
33
19
13
9
16
8
3
4/10/03
50
3725
2068
1196
889
393
168
124
33
20
12
10
15
8
3
4/10/03 100
2349
1140
584
437
227
102
79
20
11
9
8
12
8
3
4/10/03 150
2470
1199
576
357
148
67
56
13
8
5
5
8
4
2
4/10/03 200
2804
1189
518
296
93
36
25
8
7
4
4
6
3
2
4/10/03 250
2109
946
435
261
94
36
31
8
5
3
2
4
3
2
4/10/03 300
4003
1790
858
552
176
55
42
13
7
6
7
8
4
3
4/10/03 350
1150
496
213
133
47
16
11
4
1
1
1
1
1
0
4/10/03 400
2066
987
473
302
110
39
26
7
4
3
2
4
2
0
4/10/03 450
2912
1467
718
468
231
103
81
20
11
7
7
9
5
2
5/1/03
0
2499
1576
1071
857
497
262
183
46
25
16
13
17
7
2
5/1/03
10
4427
2957
1811
1413
725
349
233
56
33
22
18
23
9
3
5/1/03
20
2822
1841
1179
923
571
297
206
45
29
18
14
16
9
2
5/1/03
30
3726
2463
1612
1257
680
344
236
59
36
23
17
25
11
4
124
0.5 ‐ 16
3722
2647
3416
2321
3327
2470
8387
14719
15730
9185
8592
13231
5439
6158
6899
6379
7486
9782
6109
8020
6195
7821
6682
6741
7797
9083
5007
2566
3722
6466
10627
5183
3436
5468
9464
13203
9080
8836
8962
9270
13812
4714
14100
14201
7988
7787
16935
7111
6259
9737
6830
7223
6791
8328
4957
1934
2946
3684
2372
2269
2628
4625
6097
9753
7925
9252
6776
8665
4988
4919
4995
3941
7524
2076
4026
6040
7071
12079
7974
10494
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
334
334
334
334
334
334
334
334
334
334
335
335
335
335
335
335
335
335
335
335
335
335
335
335
336
336
336
336
336
336
336
336
336
336
336
336
336
336
337
337
337
337
337
337
337
337
337
337
337
337
337
337
338
338
338
338
338
338
338
338
338
338
338
338
338
338
368
368
368
368
368
368
368
368
368
368
368
368
369
369
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
5/1/03
40
5293
3663
2305
1878
984
463
347
92
55
37
27
37
17
8
5/1/03
50
5385
3775
2389
1899
865
395
275
68
37
27
19
24
12
4
5/1/03
100
2931
1586
847
663
375
167
123
30
18
12
11
13
8
2
5/1/03
150
2043
955
489
346
187
96
77
19
12
8
8
10
5
2
5/1/03
200
1520
722
366
277
136
64
57
15
9
7
6
9
5
2
5/1/03
250
5702
3474
1948
1399
545
200
142
36
23
15
12
16
10
3
5/1/03
300
4711
2499
1278
872
351
117
83
24
15
12
8
13
6
2
5/1/03
350
1543
699
347
250
120
50
37
10
5
5
4
6
2
1
5/1/03
400
4041
2229
1153
747
289
108
76
20
12
8
7
9
5
2
5/1/03
450
1480
729
355
247
110
44
32
10
5
4
3
4
2
1
6/4/03
0
4592
2552
1669
1603
939
359
191
39
20
11
7
8
5
2
6/4/03
10
8331
4811
3060
2536
1546
677
370
88
43
28
19
28
13
5
6/4/03
20
2929
1823
1284
1297
1074
606
367
82
44
21
14
19
6
2
6/4/03
30
3787
2245
1519
1446
1241
752
482
97
55
35
21
27
9
2
6/4/03
40
2764
1800
1398
1279
1041
658
442
97
55
31
24
28
10
3
6/4/03
50
4129
2706
1896
1710
1243
790
532
117
62
41
27
34
18
4
6/4/03
100
2215
1183
592
479
322
176
135
35
17
10
8
13
8
2
6/4/03
150
1737
922
482
357
211
110
92
24
14
11
8
11
5
2
6/4/03
200
4148
2020
1064
756
350
149
111
34
19
16
12
16
8
3
6/4/03
250
2508
1136
588
369
146
54
41
10
7
5
4
5
3
1
6/4/03
300
3791
1853
983
692
280
103
74
21
13
10
10
12
8
3
6/4/03
350
1769
861
426
293
127
49
37
9
5
4
4
6
3
1
6/4/03
400
2449
1215
600
396
158
61
42
11
7
5
4
7
3
1
6/4/03
450
3516
1854
972
691
301
118
94
26
16
11
9
11
7
2
7/8/03
0
4249
1947
1141
1106
584
188
95
23
12
7
6
7
4
1
7/8/03
10
14341
7108
3738
2817
1259
410
252
56
30
25
15
30
16
9
7/8/03
20
5240
2491
1387
1188
725
314
201
53
31
23
16
13
7
2
7/8/03
30
3909
1954
1107
944
641
312
194
51
27
21
15
19
8
3
7/8/03
40
4527
2226
1341
1193
729
339
201
57
34
20
18
21
11
4
7/8/03
50
4403
2508
1502
1285
848
413
261
65
35
23
18
23
12
3
7/8/03
100
3085
1641
691
502
337
163
122
32
19
14
9
14
8
2
7/8/03
150
3148
1534
769
499
199
84
65
19
12
9
7
9
6
2
7/8/03
200
3625
1412
676
428
163
60
43
12
8
6
5
8
5
2
7/8/03
250
3525
1596
757
474
176
75
51
14
10
6
5
8
5
3
7/8/03
300
5028
3011
1372
784
242
83
63
15
11
8
7
8
4
2
7/8/03
350
2575
1153
538
349
147
52
40
11
7
5
4
6
3
1
7/8/03
400
3110
1520
799
577
191
65
48
14
9
7
6
7
5
2
7/8/03
450
2703
1181
534
301
101
36
26
8
5
3
4
5
3
1
8/4/03
0
3631
2003
1286
1140
546
159
91
16
6
4
2
3
1
0
8/4/03
10
6692
3929
2263
1845
815
243
157
39
22
13
8
11
5
2
8/4/03
20
7050
2954
1543
1306
640
214
126
31
16
8
7
8
2
1
8/4/03
30
3210
1597
1002
970
635
262
159
32
16
11
6
6
3
1
8/4/03
40
4667
2206
1281
1153
782
364
213
49
29
18
14
21
9
2
8/4/03
50
5907
2922
1635
1379
823
387
245
58
33
21
15
20
10
3
8/4/03
100
6134
3267
1544
1056
545
247
157
35
21
13
10
14
7
1
8/4/03
150
7918
4299
2110
1406
582
221
152
40
31
20
15
21
12
4
8/4/03
200
3540
1488
686
487
212
86
59
14
9
6
5
6
4
1
8/4/03
250
3980
1875
898
616
257
100
75
22
12
9
7
12
8
2
8/4/03
300
5307
2542
1239
803
323
119
92
27
17
12
11
14
6
2
8/4/03
350
1613
713
320
218
91
40
25
6
4
4
3
3
1
0
8/4/03
400
3638
1838
908
625
251
102
65
20
11
9
5
10
4
2
8/4/03
450
2737
1189
586
391
143
59
40
13
6
5
4
4
2
1
9/4/03
0
3732
2248
1401
1288
705
209
115
27
14
9
6
6
2
1
9/4/03
10
5523
3646
2273
1928
951
296
173
40
22
15
13
13
8
3
9/4/03
20
9000
5340
3273
2800
1431
490
330
83
44
28
21
26
12
6
9/4/03
30
8002
4607
2773
2373
1289
504
336
87
46
31
28
37
18
5
9/4/03
40
5322
2818
1722
1414
793
342
225
53
31
24
17
22
9
3
9/4/03
50
5753
2961
1776
1506
784
337
225
58
32
22
18
23
12
3
9/4/03
100
6216
3353
1681
1300
741
336
259
69
41
25
21
25
13
5
9/4/03
150
2277
1195
665
510
241
121
90
26
17
13
10
15
7
1
9/4/03
200
1160
555
350
317
139
55
36
13
9
5
5
6
3
1
9/4/03
250
3415
1499
719
490
243
103
87
28
16
12
10
14
9
3
9/4/03
300
3083
1276
612
421
191
76
61
18
10
9
7
10
5
1
9/4/03
350
2064
879
411
295
140
61
51
16
10
9
6
8
5
1
9/4/03
400
3050
1328
625
428
175
69
51
14
11
6
5
7
4
2
9/4/03
450
4740
2287
1259
963
444
180
127
31
18
12
9
10
6
1
3/16/06
0
4038
1963
1155
901
371
135
107
25
17
17
15
15
10
2
3/16/06
10
8692
4157
2686
2159
1136
475
332
69
43
27
14
24
19
3
3/16/06
20
3804
1785
1017
763
325
114
81
21
19
17
12
13
7
3
3/16/06
50
7849
3305
1609
845
339
116
90
27
17
10
19
13
9
2
3/16/06 100
7527
3203
1582
1052
428
177
119
39
19
20
12
12
9
3
3/16/06 150
4367
2149
1183
808
325
92
74
20
14
12
13
13
13
1
3/16/06 200
5593
2730
1554
1169
529
181
142
38
17
20
17
17
7
2
3/16/06 250
6148
2582
1327
861
380
129
98
22
17
9
12
15
10
2
3/16/06 300
2541
1088
548
342
125
53
38
9
8
7
6
8
5
1
3/16/06 350
2283
867
424
246
82
31
16
5
5
5
2
5
1
1
3/16/06 400
2396
1181
581
435
187
85
55
21
11
7
6
15
7
3
3/16/06 450
4771
1961
879
525
183
53
31
13
5
5
5
6
5
1
4/13/06
0
5609
2445
1141
819
321
103
53
12
9
5
7
9
5
2
4/13/06
10
6765
3365
1571
1060
490
200
157
47
23
14
12
16
9
1
125
0.5 ‐ 16
15205
15175
6785
4257
3194
13526
9990
3080
8704
3027
11998
21557
9568
11716
9631
13312
5197
3985
8707
4877
7852
3595
4958
7628
9372
30105
11689
9205
10720
11399
6639
6362
6454
6705
10637
4890
6359
4910
8890
16046
13906
7911
10807
13457
13050
16831
6603
7872
10514
3041
7487
5180
9762
14904
22883
20136
12793
13510
14084
5189
2655
6649
5780
3955
5773
10088
8770
19836
7981
14252
14203
9083
12015
11611
4781
3973
4989
8445
10540
13730
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
369
369
369
369
369
369
369
369
369
370
370
370
370
370
370
370
370
370
370
370
370
371
371
371
371
371
371
371
371
371
371
372
372
372
372
372
372
372
372
372
372
372
372
373
373
373
373
373
373
373
373
373
373
373
373
374
374
374
374
374
374
374
374
374
374
374
374
375
375
375
375
375
375
375
375
375
375
375
376
376
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
4/13/06
20
6939
3267
1566
1106
490
201
139
40
17
7
10
10
6
5
4/13/06
50
7319
3491
1659
1087
368
110
89
15
13
8
4
6
3
0
4/13/06 100
5616
2641
1390
1123
502
225
188
63
30
34
19
25
14
3
4/13/06 150
5655
2679
1185
817
299
106
77
20
11
9
5
9
5
3
4/13/06 200
5946
2788
1461
1007
390
163
143
39
22
13
11
12
5
1
4/13/06 250
3484
1605
801
516
188
57
35
11
1
3
5
4
2
1
4/13/06 300
4030
1751
795
468
125
41
28
11
1
3
2
7
3
0
4/13/06 350
2113
904
401
270
93
20
20
3
6
3
6
5
3
1
4/13/06 400
3521
1831
1037
843
515
282
231
98
41
29
25
27
7
2
5/5/06
0
6341
2565
1203
877
431
177
121
25
13
12
5
6
1
0
5/5/06
10
12295
6357
3589
3086
1448
554
407
95
66
36
31
30
10
7
5/5/06
10
8441
3387
1520
987
475
170
136
33
19
12
11
7
8
1
5/5/06
20
9554
4887
2240
1640
742
253
187
52
23
14
15
15
9
3
5/5/06
50
8055
3586
1350
699
272
100
69
20
7
7
9
11
7
3
5/5/06
150
4143
1962
961
705
255
91
51
19
12
5
6
6
2
3
5/5/06
200
18028
9220
4638
3342
1308
493
367
103
73
57
50
57
33
8
5/5/06
250
9658
4323
2290
1675
805
385
362
95
45
30
33
35
22
10
5/5/06
300
3521
1762
951
714
357
153
110
28
21
13
10
7
7
2
5/5/06
350
3536
1392
586
356
117
34
27
7
3
2
3
5
5
2
5/5/06
400
1753
760
349
217
64
20
11
2
8
5
3
4
2
0
5/5/06
450
349
141
82
47
22
11
7
1
1
1
1
0
1
1
6/7/06
20
10408
5625
3182
2393
1395
588
460
108
68
53
33
42
27
8
6/7/06
50
12980
6692
3170
1913
668
218
175
47
42
22
10
25
8
3
6/7/06
100
7357
3800
1765
1057
385
115
78
17
15
5
3
7
7
0
6/7/06
150
19460
10608
6257
5028
2650
1188
1202
478
357
292
222
352
192
65
6/7/06
200
4075
2315
1357
1145
550
170
103
27
8
8
8
22
17
5
6/7/06
250
10837
6023
3530
2717
1295
523
350
90
60
40
33
37
13
7
6/7/06
300
11468
5577
2713
1853
617
177
107
23
15
7
7
17
12
2
6/7/06
350
4940
2033
985
672
265
83
33
8
2
2
3
3
5
0
6/7/06
400
3907
1575
715
450
175
42
35
7
8
0
2
3
3
2
6/7/06
450
3215
1895
1108
1147
715
425
345
90
58
20
17
28
2
3
7/17/06
0
6003
3070
1662
1340
692
268
177
38
27
15
8
13
5
0
7/17/06
10
11427
5913
3265
2400
1202
437
325
90
68
25
23
57
18
3
7/17/06
20
6428
3280
1917
1653
878
343
227
73
45
37
25
17
12
3
7/17/06
50
11752
6037
3120
2228
947
255
208
62
38
20
30
33
20
3
7/17/06 100
6133
3075
1702
1325
673
255
152
42
17
10
10
23
8
3
7/17/06 150
5058
2525
1462
1050
550
167
148
48
33
17
7
22
7
0
7/17/06 200
7070
2990
1500
1117
498
203
155
40
37
10
18
20
13
5
7/17/06 250
6002
3118
1650
1392
720
302
162
48
18
13
10
5
7
2
7/17/06 300
10393
5577
3122
2457
1132
373
318
148
122
95
62
82
33
13
7/17/06 350
5483
2745
1358
958
440
180
123
35
12
7
17
17
7
0
7/17/06 400
2695
1265
610
430
235
75
47
7
7
5
5
7
2
2
7/17/06 450
8185
3938
1992
1325
488
145
125
55
35
18
27
18
15
2
8/2/06
0
16092
7992
4117
3115
1617
665
478
115
85
57
50
40
17
5
8/2/06
10
54875
31580
15057
8725
2755
795
455
93
78
45
27
35
18
8
8/2/06
20
15050
5357
2193
1332
627
245
130
27
22
10
7
8
2
2
8/2/06
50
8577
4367
2237
1722
970
477
403
100
65
50
50
48
32
15
8/2/06
100
28897
10650
5158
3728
1753
797
667
223
102
75
57
63
25
8
8/2/06
150
10558
5438
2677
2020
920
442
347
82
58
38
18
22
12
3
8/2/06
200
5388
2432
890
540
215
125
82
20
13
15
7
12
2
0
8/2/06
250
747
335
139
91
43
14
16
3
1
2
3
3
0
1
8/2/06
300
7051
3029
1547
1203
616
275
219
61
37
27
18
25
9
1
8/2/06
350
5283
2488
1289
867
478
208
177
61
31
26
19
31
9
5
8/2/06
400
4630
2173
849
496
189
73
53
17
4
4
5
11
3
3
8/2/06
450
3019
1139
471
240
91
35
25
8
5
3
6
6
3
2
9/5/06
0
5104
2221
1107
996
523
185
100
27
11
10
4
7
3
3
9/5/06
10
10116
4570
2219
1860
919
290
200
56
24
12
11
19
5
2
9/5/06
20
8191
3835
2217
2211
1261
505
359
62
51
33
25
19
7
0
9/5/06
50
19790
6703
3178
2387
982
330
259
75
45
36
17
19
12
4
9/5/06
100
4337
2145
1025
657
241
77
75
25
10
6
3
8
3
0
9/5/06
150
3851
2019
1053
833
387
145
127
33
20
16
11
9
3
1
9/5/06
200
5039
2614
1369
985
333
105
78
17
11
14
10
11
7
3
9/5/06
250
5045
2209
1119
880
448
191
165
35
27
12
10
17
9
3
9/5/06
300
5064
2689
1533
1098
404
147
80
24
15
3
3
3
3
1
9/5/06
350
5921
3197
1610
1203
471
152
91
34
18
12
7
13
5
1
9/5/06
400
6165
3293
1789
1317
539
215
149
52
33
17
10
19
7
1
9/5/06
450
8736
4835
2326
1491
481
140
74
23
9
7
3
3
1
1
10/3/06
0
9788
4095
2159
1663
761
301
240
57
52
29
23
26
10
4
10/3/06
10
10716
4553
2089
1171
362
139
110
31
21
13
13
15
7
4
10/3/06
50
7607
3088
1497
1227
537
163
102
35
30
21
7
17
9
3
10/3/06 100
4495
1974
1022
684
231
90
61
19
6
5
5
7
6
3
10/3/06 150
3585
1551
717
421
127
62
45
17
7
5
5
9
6
2
10/3/06 200
5767
1689
615
355
115
44
32
15
9
11
8
5
3
1
10/3/06 250
9898
4659
2459
1817
780
307
201
55
35
24
18
20
6
2
10/3/06 300
2871
1105
525
307
87
38
25
8
3
5
3
6
7
1
10/3/06 350
3181
1211
530
330
97
41
26
5
3
2
7
3
2
1
10/3/06 400
4855
2322
1183
838
264
76
47
9
8
3
6
8
3
1
10/3/06 450
2995
1015
405
219
78
26
18
7
5
5
1
3
3
1
11/7/06
0
16685
8301
4571
3303
1356
460
295
71
36
31
15
16
7
1
11/7/06
10
8225
3757
2150
1680
729
297
211
59
25
22
13
15
5
4
126
0.5 ‐ 16
13804
14174
11873
10879
11999
6713
7264
3848
8489
11777
28012
15208
19632
14194
8223
37778
19768
7657
6075
3200
664
24392
25973
14610
48350
9810
25555
22593
9035
6923
9068
13318
25253
14938
24753
13428
11093
13677
13448
23927
11382
5390
16368
34443
114547
25010
19112
52203
22635
9740
1399
14119
10971
8511
5052
10299
20303
18775
33836
8612
8507
10595
10169
11067
12735
13606
18131
19208
19243
14344
8607
6557
8669
20280
4991
5439
9624
4783
35150
17193
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
376
376
376
376
376
376
376
376
376
377
377
377
377
377
377
377
377
377
377
377
378
378
378
378
378
378
378
378
378
378
378
379
379
379
379
379
379
379
379
379
379
379
380
380
380
380
380
380
380
380
380
380
380
382
382
382
382
382
382
382
382
382
382
382
384
384
384
384
384
384
384
384
384
384
384
385
385
385
385
385
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
11/7/06
50
4037
1832
873
560
218
73
57
19
9
4
4
7
3
0
11/7/06 100
3953
1285
505
274
102
45
29
8
3
5
5
6
5
3
11/7/06 150
2925
972
387
268
118
37
31
11
8
7
3
5
4
2
11/7/06 200
5922
2401
1087
619
213
54
43
13
10
11
3
9
6
1
11/7/06 250
3285
1283
490
299
71
27
26
11
3
2
3
2
3
3
11/7/06 300
10009
4163
2118
1471
490
137
81
21
11
7
7
9
1
1
11/7/06 350
5149
1954
955
703
261
106
66
14
11
11
6
6
3
2
11/7/06 400
19481
6189
2815
2112
991
425
347
109
67
47
33
45
23
7
11/7/06 450
4071
1491
693
441
182
54
42
3
4
3
5
6
3
0
12/5/06
0
5368
2022
1013
695
279
107
95
35
22
21
13
18
9
2
12/5/06
10
8663
3091
1369
858
308
133
101
30
20
13
13
18
5
3
12/5/06
50
6275
2315
1104
640
223
99
53
21
11
10
7
11
5
2
12/5/06 100
2979
1245
552
413
230
103
78
15
7
9
4
6
5
0
12/5/06 150
6162
2485
1124
666
198
65
41
20
18
11
9
12
6
4
12/5/06 200
4853
2011
817
475
173
55
35
9
5
5
5
12
3
0
12/5/06 250
6891
2763
1231
699
226
83
60
17
9
5
7
9
5
3
12/5/06 300
6368
2469
1022
572
183
66
56
30
17
13
11
11
8
2
12/5/06 350
3625
1577
877
515
199
83
59
14
9
6
4
9
3
2
12/5/06 400
4839
1907
827
515
189
60
49
21
11
8
7
3
5
1
12/5/06 450
3430
1749
901
700
399
195
195
53
45
21
19
14
11
3
1/8/07
0
5930
2655
1329
806
287
103
85
23
12
9
7
13
5
1
1/8/07
10
5125
2552
1331
876
363
131
99
24
11
13
9
14
9
2
1/8/07
50
5944
2496
1105
629
181
65
55
16
5
6
5
11
8
1
1/8/07
100
6924
3279
1693
1160
479
162
104
31
22
11
15
17
8
0
1/8/07
150
5761
2414
1122
687
247
86
73
19
11
15
5
15
6
2
1/8/07
200
4211
2006
1051
843
385
171
111
38
17
13
6
14
3
3
1/8/07
250
1697
760
420
325
133
61
58
17
15
5
5
4
5
3
1/8/07
300
3590
1539
746
503
215
89
85
15
15
11
5
8
3
0
1/8/07
350
8887
3682
1651
1109
443
205
159
41
22
20
17
29
8
4
1/8/07
400
3032
1365
597
371
119
40
31
11
7
9
5
5
6
3
1/8/07
450
4043
1619
716
431
155
51
37
10
5
4
1
6
1
1
2/5/07
0
6899
3147
1561
1022
399
142
102
24
19
17
11
17
5
3
2/5/07
10
5016
2091
841
481
163
56
47
14
7
9
8
9
5
0
2/5/07
50
5191
2235
1029
687
251
97
77
13
13
9
11
8
6
1
2/5/07
100
3002
1325
630
423
167
48
34
11
8
3
7
6
1
1
2/5/07
150
6834
2979
1418
829
303
93
81
29
19
11
7
15
4
1
2/5/07
200
3885
1591
747
564
280
138
124
45
27
10
17
26
7
8
2/5/07
250
2297
1097
537
351
125
49
46
9
9
6
5
13
4
1
2/5/07
300
1851
881
480
311
113
45
17
7
4
2
3
4
3
0
2/5/07
350
5716
2423
1132
705
248
65
48
13
10
5
5
7
11
3
2/5/07
400
3948
1923
1025
727
348
142
132
45
34
20
15
17
11
6
2/5/07
450
4067
1681
781
426
125
43
28
9
3
5
3
6
5
0
3/5/07
0
14647
8039
4615
3333
1434
550
370
104
71
47
40
49
27
7
3/5/07
10
6990
3403
1615
941
365
125
95
20
18
11
5
19
9
5
3/5/07
50
11055
5324
2573
1573
601
182
139
34
16
11
15
13
12
3
3/5/07
100
10445
4982
2465
1701
707
281
185
49
29
17
14
18
8
3
3/5/07
150
9353
4651
2633
2107
963
389
324
92
55
34
32
46
29
7
3/5/07
200
6773
3385
1506
869
281
97
75
20
11
8
7
6
1
1
3/5/07
250
11526
5884
3170
2384
994
357
253
56
39
19
15
27
15
4
3/5/07
300
36399
21453
14525
13833
8170
3817
3357
1030
619
464
389
517
312
121
3/5/07
350
27611
15483
9743
8044
3947
1688
1283
337
207
152
113
137
66
25
3/5/07
400
7390
3807
1876
1298
511
211
203
64
43
21
21
34
15
7
3/5/07
450
7698
3489
1497
823
296
80
66
28
14
10
5
11
5
6
5/10/07
0
2494
1286
563
335
250
90
42
9
4
3
3
5
2
1
5/10/07
10
2537
1495
804
545
364
136
61
16
9
5
3
4
2
0
5/10/07
50
2853
1881
1018
683
299
103
62
14
7
4
4
6
3
1
5/10/07 100
2197
1101
491
277
75
23
19
9
6
4
3
4
1
1
5/10/07 150
1743
719
293
166
50
15
13
3
2
2
1
2
1
0
5/10/07 200
1642
644
262
141
43
10
6
2
1
1
1
1
1
0
5/10/07 250
1685
580
229
123
36
10
8
2
2
1
1
1
1
0
5/10/07 300
2143
838
317
140
35
6
4
1
1
1
1
1
1
0
5/10/07 350
2070
719
264
128
32
9
7
3
2
1
1
1
1
0
5/10/07 400
2147
792
301
158
45
14
9
3
2
2
2
2
1
0
5/10/07 450
1648
528
191
106
31
10
8
3
1
1
1
1
1
0
7/9/07
0
721
480
254
141
43
11
8
2
1
0
0
1
0
0
7/9/07
10
1089
732
412
267
100
22
11
3
1
1
1
1
0
0
7/9/07
50
1200
694
453
357
170
45
37
11
4
2
1
1
0
0
7/9/07
100
276
88
45
36
18
8
8
2
1
0
0
0
0
0
7/9/07
150
216
52
17
8
4
4
4
1
1
0
0
0
0
0
7/9/07
200
194
60
25
17
9
5
6
1
1
1
1
0
0
0
7/9/07
250
140
37
14
8
5
4
4
1
0
0
0
0
0
0
7/9/07
300
134
37
16
12
8
5
5
1
1
0
0
0
0
0
7/9/07
350
151
39
11
7
3
3
4
1
0
0
0
0
0
0
7/9/07
400
142
37
13
7
4
4
3
1
0
1
0
0
0
0
7/9/07
450
254
63
22
14
7
4
4
1
1
0
0
0
0
0
8/1/07
0
1026
491
284
187
58
18
10
2
0
0
0
0
0
0
8/1/07
10
771
482
245
142
56
13
6
1
0
0
0
0
0
0
8/1/07
50
1593
1194
667
463
179
50
33
7
3
2
1
1
1
0
8/1/07
100
451
172
105
83
44
15
13
4
2
1
1
1
0
0
8/1/07
150
303
80
30
15
8
7
9
2
1
1
0
1
0
0
127
0.5 ‐ 16
7695
6229
4779
10393
5507
18527
9248
32689
7000
9699
14624
10777
5647
10821
8459
12008
10829
6983
8443
7734
11265
10560
10528
13906
10465
8874
3507
6824
16275
5601
7079
13367
8745
9630
5666
12621
7469
4548
3720
10390
8393
7183
33333
13623
21551
20905
20716
13039
24744
105006
68835
15501
14029
5088
5980
6939
4209
3011
2756
2680
3488
3237
3478
2531
1663
2640
2975
483
307
321
215
219
220
213
371
2077
1715
4193
893
456
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
385
385
385
385
385
386
386
386
386
386
386
386
386
386
386
386
388
388
388
388
388
388
388
388
388
388
388
389
389
389
389
389
389
389
389
389
389
389
390
390
390
390
390
390
390
390
390
390
390
391
391
391
391
391
391
391
391
391
391
391
392
392
392
392
392
392
392
392
392
392
392
393
393
393
393
393
393
393
393
393
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
8/1/07
200
220
60
21
10
4
3
4
1
0
0
0
0
0
0
8/1/07
250
269
89
40
28
16
9
8
2
1
1
1
1
0
0
8/1/07
300
360
104
38
23
12
6
6
2
1
1
0
0
0
0
8/1/07
350
263
95
50
41
23
10
10
3
1
0
1
1
0
0
8/1/07
400
211
62
22
13
6
4
5
2
1
1
0
0
0
0
9/7/07
0
1185
742
388
276
99
31
21
4
2
1
1
1
0
0
9/7/07
10
1934
1166
640
485
189
60
38
8
4
3
1
2
1
0
9/7/07
50
2467
1542
765
514
207
62
51
14
10
7
7
13
16
10
9/7/07
100
526
199
126
100
66
26
22
7
6
3
4
9
12
7
9/7/07
150
994
381
179
125
60
25
24
8
5
5
4
9
12
7
9/7/07
200
415
156
76
51
27
13
15
5
3
3
2
6
8
4
9/7/07
250
346
153
77
59
28
13
12
4
2
2
2
5
7
4
9/7/07
300
406
119
57
45
22
11
11
3
2
1
1
3
4
2
9/7/07
350
803
328
168
132
67
26
23
6
4
3
2
5
5
3
9/7/07
400
593
257
133
108
57
23
22
7
3
3
3
7
7
4
9/7/07
450
264
105
55
43
27
12
12
4
2
2
2
5
7
3
11/13/07
0
1040
578
294
197
72
24
16
4
2
2
1
1
0
0
11/13/07 10
1225
624
301
199
68
22
16
3
1
1
1
1
0
0
11/13/07 50
1251
717
497
370
134
37
22
4
2
1
1
1
0
0
11/13/07 100
545
216
111
77
33
12
10
2
1
1
0
0
0
0
11/13/07 150
477
131
53
37
24
12
11
3
1
1
1
1
1
0
11/13/07 200
492
139
53
35
20
11
9
2
1
1
0
1
0
0
11/13/07 250
697
202
97
70
43
21
21
5
2
1
1
1
0
0
11/13/07 300
475
142
57
41
24
11
11
2
1
1
1
1
0
0
11/13/07 350
742
215
86
54
27
16
16
4
2
1
1
1
0
0
11/13/07 400
471
138
54
36
22
13
10
2
1
0
1
0
0
0
11/13/07 450
763
225
92
63
33
19
16
3
2
1
1
1
0
0
12/13/07
0
1232
596
311
199
67
21
16
4
3
2
2
1
1
0
12/13/07 10
714
390
196
125
48
15
13
3
1
1
1
0
0
0
12/13/07 50
540
297
164
125
44
14
12
3
2
1
1
1
0
0
12/13/07 100
245
74
30
19
8
3
2
1
0
0
0
0
0
0
12/13/07 150
402
132
55
34
16
6
5
1
1
0
0
0
0
0
12/13/07 200
379
107
46
29
16
7
6
2
1
0
0
1
0
0
12/13/07 250
410
130
56
22
9
5
5
1
0
0
0
0
0
0
12/13/07 300
186
60
26
18
10
5
5
1
1
0
0
0
0
0
12/13/07 350
158
43
18
12
7
5
4
1
0
0
0
0
0
0
12/13/07 400
327
84
25
13
7
4
5
1
0
0
0
0
0
0
12/13/07 450
306
81
28
19
10
6
5
1
1
0
0
0
0
0
1/15/08
0
1306
716
396
269
99
35
28
6
3
2
1
1
1
0
1/15/08
10
1259
657
373
268
106
37
29
7
4
1
1
1
0
0
1/15/08
50
1390
708
376
255
99
38
28
6
3
1
1
1
0
0
1/15/08 100
1153
580
296
200
83
27
22
6
2
1
1
1
0
0
1/15/08 150
895
448
244
174
76
25
19
4
1
1
1
1
0
0
1/15/08 200
266
117
60
40
19
8
6
2
1
1
0
1
0
0
1/15/08 250
355
142
69
45
24
10
8
2
1
0
0
1
0
0
1/15/08 300
360
127
59
41
26
15
14
3
2
1
0
1
0
0
1/15/08 350
231
80
36
25
15
6
5
1
1
0
0
0
0
0
1/15/08 400
1173
448
201
133
53
20
16
4
2
2
1
1
0
0
1/15/08 450
286
99
45
28
16
8
6
1
1
0
0
0
0
0
2/5/08
0
614
328
173
116
50
18
14
3
2
1
1
0
0
0
2/5/08
10
746
356
193
136
61
21
16
4
2
1
0
1
0
0
2/5/08
50
1211
546
278
192
81
28
19
5
3
1
1
1
1
0
2/5/08
100
1234
544
251
163
68
28
20
5
2
1
1
1
0
0
2/5/08
150
1078
469
246
173
73
26
19
5
3
1
1
1
0
0
2/5/08
200
1175
517
257
182
79
28
20
5
2
2
1
1
0
0
2/5/08
250
918
390
206
144
71
29
21
5
2
1
1
1
0
0
2/5/08
300
978
435
218
146
68
23
18
3
1
1
1
1
0
0
2/5/08
350
840
377
196
127
64
24
18
3
2
1
1
1
1
0
2/5/08
400
1559
666
331
238
112
48
39
9
5
3
2
1
1
0
2/5/08
450
979
447
212
139
64
24
19
5
3
2
1
1
1
0
5/29/08
0
5615
3105
1574
1513
2319
852
325
61
40
27
17
22
14
5
5/29/08
10
4122
2343
1316
1494
2160
870
436
89
55
32
18
23
12
4
5/29/08
50
3270
1654
668
486
524
233
120
28
18
13
12
24
11
3
5/29/08 100
3165
1539
698
397
190
80
49
12
8
6
6
10
6
2
5/29/08 150
3810
1855
791
429
176
73
50
15
11
8
8
12
7
2
5/29/08 200
2597
1123
452
229
68
21
14
5
4
3
3
5
3
2
5/29/08 250
2520
1119
442
212
59
20
13
4
3
3
2
3
2
1
5/29/08 300
2299
1148
565
378
168
58
38
11
7
5
6
7
4
2
5/29/08 350
2319
996
366
188
63
23
16
6
3
3
2
4
4
1
5/29/08 400
2884
1394
575
254
71
22
13
4
3
3
2
3
2
1
5/29/08 450
2104
908
389
226
78
27
18
6
4
3
3
4
2
1
7/18/08
0
5043
2904
1746
2197
2131
547
257
57
30
27
16
14
9
3
7/18/08
10
1688
1117
1176
2103
2276
663
274
57
36
19
10
9
4
1
7/18/08
50
2932
1865
905
830
653
223
152
55
33
20
10
14
6
2
7/18/08 100
1581
658
338
254
177
57
31
10
7
5
5
11
5
1
7/18/08 150
1337
642
333
228
130
39
20
5
3
3
2
3
2
0
7/18/08 200
942
421
205
126
63
20
10
3
3
2
1
2
1
1
7/18/08 250
1120
542
256
166
67
19
13
3
2
2
1
2
1
1
7/18/08 300
979
450
224
146
52
13
9
3
2
2
1
2
1
0
7/18/08 350
1252
539
252
168
56
16
10
3
2
2
1
2
1
0
128
0.5 ‐ 16
325
464
554
497
327
2752
4532
5685
1112
1835
784
715
687
1573
1225
542
2230
2462
3037
1008
752
763
1163
768
1164
748
1221
2456
1507
1203
382
652
592
639
313
249
467
457
2863
2744
2907
2374
1888
521
657
648
401
2054
491
1319
1538
2365
2319
2095
2269
1788
1894
1653
3014
1896
15489
12974
7062
6168
7247
4529
4403
4695
3995
5231
3773
14981
9433
7699
3140
2748
1800
2194
1883
2305
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
393
393
395
395
395
395
395
395
395
395
395
395
395
396
396
396
396
396
396
396
396
396
396
396
397
397
397
397
397
397
397
397
397
397
397
398
398
398
398
398
398
398
398
398
398
398
399
399
399
399
399
399
399
399
399
399
399
400
400
400
400
400
400
400
400
400
400
400
401
401
401
401
401
401
401
401
401
401
401
402
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
7/18/08 400
972
415
210
147
66
21
14
4
3
2
2
2
1
0
7/18/08 450
1049
440
214
145
54
19
13
4
3
2
1
2
1
0
9/11/08
0
2914
1963
1286
1552
1241
297
171
40
23
15
11
15
9
3
9/11/08
10
5379
3268
2023
2484
1927
517
300
74
41
27
19
24
14
4
9/11/08
50
5633
3387
1726
1476
967
360
227
61
38
24
15
19
12
4
9/11/08 100
2000
1004
569
515
311
98
53
18
12
7
4
6
3
1
9/11/08 150
2196
1120
555
379
201
55
35
10
6
6
5
8
3
1
9/11/08 200
1971
1035
519
345
161
45
26
8
5
3
3
4
2
1
9/11/08 250
936
482
264
232
125
37
23
6
4
3
2
3
2
0
9/11/08 300
2046
1072
517
309
119
33
21
7
5
4
3
4
2
1
9/11/08 350
4495
2645
1245
683
231
71
42
10
8
7
5
7
4
1
9/11/08 400
3349
1725
768
401
135
41
28
10
7
6
6
8
4
1
9/11/08 450
5842
3324
1721
1124
481
148
84
21
19
14
13
18
11
4
10/24/08
0
na
na
na
na
na
na
na
na
na
na
na
na
na
na
10/24/08 10
1985
904
518
568
340
98
69
17
11
10
7
9
8
6
10/24/08 50
3278
1842
1050
1053
948
358
161
34
20
14
10
13
9
3
10/24/08 100
1049
479
258
259
154
55
32
13
10
5
5
6
4
1
10/24/08 150
828
364
180
136
74
19
13
6
7
4
3
5
2
1
10/24/08 200
2289
1257
652
406
133
34
19
5
5
4
3
6
4
1
10/24/08 250
799
365
169
113
46
13
8
3
3
2
2
3
2
1
10/24/08 300
2755
1388
679
423
159
47
35
11
9
9
8
11
6
2
10/24/08 350
1253
528
237
154
65
20
15
6
4
4
2
4
2
1
10/24/08 400
853
394
193
126
47
15
11
4
3
4
2
3
1
0
10/24/08 450
1358
627
288
174
69
21
17
6
4
4
3
5
3
1
11/19/08
0
2567
1441
909
588
227
69
52
16
13
10
9
14
10
6
11/19/08 10
2214
1194
741
589
267
85
67
19
13
10
9
15
12
4
11/19/08 50
2787
1131
485
406
209
81
65
20
13
9
6
8
6
2
11/19/08 100
751
281
147
103
38
12
9
3
3
3
2
2
1
1
11/19/08 150
839
342
155
109
55
14
10
7
5
4
3
3
2
1
11/19/08 200
810
355
145
102
53
18
9
3
3
2
2
2
1
0
11/19/08 250
1245
588
257
155
63
19
11
5
3
3
3
4
3
1
11/19/08 300
756
328
142
102
44
11
8
2
2
2
1
2
1
0
11/19/08 350
955
370
150
97
37
10
5
2
2
1
1
2
1
0
11/19/08 400
695
280
125
66
22
6
4
2
1
1
1
1
1
0
11/19/08 450
946
372
152
92
29
7
5
2
2
1
1
1
1
0
1/28/09
0
3045
2034
1159
895
434
152
103
30
20
15
13
17
10
3
1/28/09
10
2765
1262
662
549
201
61
44
14
11
8
7
10
5
2
1/28/09
50
2325
1311
743
606
298
104
74
21
14
10
8
11
6
2
1/28/09 100
1298
478
202
153
79
26
18
6
5
4
3
5
3
1
1/28/09 150
1552
681
287
182
80
27
19
6
5
3
3
4
3
1
1/28/09 200
1250
517
212
122
51
18
14
4
4
3
3
5
3
1
1/28/09 250
1291
580
232
138
58
17
15
5
3
3
4
5
3
1
1/28/09 300
842
312
118
60
21
8
6
3
2
2
2
3
2
0
1/28/09 350
832
313
119
57
19
7
6
3
2
2
2
3
1
1
1/28/09 400
1304
592
247
166
73
23
20
6
4
3
2
4
2
1
1/28/09 450
1253
529
218
140
59
19
15
6
4
3
2
3
2
1
3/11/09
0
2054
1019
614
566
234
68
40
12
9
7
5
9
4
1
3/11/09
10
3309
2068
1246
1093
472
151
97
28
19
16
12
17
9
3
3/11/09
50
2277
1047
561
526
204
59
34
10
8
7
5
9
5
2
3/11/09 100
1981
924
522
481
190
55
34
10
7
6
5
9
4
1
3/11/09 150
1507
679
369
302
122
39
24
6
5
4
4
5
2
1
3/11/09 200
4181
3269
2016
1605
694
238
160
46
31
23
20
24
13
4
3/11/09 250
1525
709
343
243
97
29
19
6
5
4
3
5
2
0
3/11/09 300
1501
711
309
184
62
18
11
4
3
3
2
3
2
1
3/11/09 350
1810
939
415
246
93
26
19
8
6
5
5
7
4
1
3/11/09 400
1355
639
281
172
64
20
15
6
5
4
4
5
3
2
3/11/09 450
1807
855
377
206
71
23
19
8
8
6
5
8
4
2
4/21/09
0
2806
1598
977
841
326
101
63
17
10
8
6
7
4
2
4/21/09
10
2423
1594
1178
993
442
149
105
31
17
11
9
16
8
2
4/21/09
50
2861
1716
990
902
415
144
106
29
18
13
11
17
10
3
4/21/09 100
2229
974
454
361
185
67
46
11
9
7
6
10
5
2
4/21/09 150
1740
791
422
342
169
64
51
15
9
8
7
10
5
2
4/21/09 200
1518
718
380
271
124
36
24
8
5
4
4
6
3
1
4/21/09 250
1770
923
479
330
143
47
31
11
8
8
7
8
5
2
4/21/09 300
1059
538
245
191
88
30
21
6
5
4
3
6
3
1
4/21/09 350
1183
632
306
191
87
28
19
5
4
3
3
4
3
1
4/21/09 400
937
486
250
171
73
23
15
4
4
3
2
3
2
1
4/21/09 450
885
466
251
189
88
28
23
8
6
5
3
4
2
1
5/27/09
0
12984
4000
1614
1307
1282
346
153
36
26
20
13
23
13
4
5/27/09
10
1590
689
407
686
1043
317
117
22
15
9
6
8
4
1
5/27/09
50
2053
1144
582
546
546
178
84
19
11
8
7
10
7
2
5/27/09 100
8049
4551
2596
2008
921
361
244
81
54
48
37
53
32
14
5/27/09 150
720
269
123
72
29
10
9
4
3
2
2
4
2
1
5/27/09 200
1074
388
155
92
37
12
12
5
4
4
4
5
3
1
5/27/09 250
1087
397
160
93
32
9
8
4
4
3
2
5
3
1
5/27/09 300
1289
530
207
123
49
17
13
5
3
3
2
4
2
1
5/27/09 350
655
227
90
44
15
6
5
2
2
2
1
2
1
1
5/27/09 400
500
166
74
40
15
6
4
2
2
1
1
2
1
0
5/27/09 450
604
231
93
65
29
12
11
4
5
4
3
4
2
1
6/15/09
0
1847
1087
719
817
483
105
39
7
3
3
2
2
1
1
129
0.5 ‐ 16
1860
1949
9539
16100
13949
4601
4579
4130
2117
4144
9454
6489
12825
na
4550
8794
2331
1641
4817
1529
5542
2295
1658
2581
5932
5240
5227
1356
1548
1506
2358
1402
1634
1205
1612
7931
5602
5534
2281
2854
2205
2355
1381
1367
2448
2254
4641
8539
4752
4229
3068
12322
2990
2814
3584
2575
3400
6764
6979
7236
4365
3634
3102
3771
2199
2468
1974
1959
21821
4915
5195
19049
1248
1795
1807
2247
1053
813
1068
5116
Assessment of Particle Size Analysis in the Lake Tahoe Basin
February 2011
APPENDIX D. Analytic results of laser particle size analysis (LiQuilaz) on Lake Tahoe
midlake water samples (MLTP site) (continued).
MLTP
ID
402
402
402
402
402
402
402
402
402
402
403
403
403
403
403
403
403
403
403
403
403
404
404
404
404
404
404
404
404
404
404
404
405
405
405
405
405
405
405
405
405
405
405
406
406
406
406
406
406
406
406
406
406
406
Sample Depth
Concentration (Num.) = Num. of Particles in Bin / mL (Bin Sizes in µm)
Date
(m) 0.5 ‐ 0.63 0.63 ‐ 0.79 0.79 ‐ 1.0 1.0 ‐ 1.41 1.41 ‐ 2.0 2.0 ‐ 2.83 2.83 ‐ 4.0 4.0 ‐ 4.76 4.76 ‐ 5.66 5.66 ‐ 6.73 6.73 ‐ 8.0 8.0 ‐ 11.31 11.31 ‐ 16.0 16 ‐ 20
6/15/09
10
1395
879
607
768
493
129
55
11
6
5
3
4
2
1
6/15/09
50
2933
1537
718
552
473
152
76
17
13
10
7
10
5
1
6/15/09 100
1257
514
243
186
123
33
18
5
3
4
3
5
3
1
6/15/09 150
1066
469
232
150
66
18
9
3
2
2
2
3
2
1
6/15/09 200
660
272
141
91
28
7
4
1
1
1
1
1
1
0
6/15/09 250
753
320
136
77
22
6
4
2
1
1
0
1
1
0
6/15/09 300
670
306
133
77
28
7
5
2
1
1
1
1
1
0
6/15/09 350
567
250
110
66
21
6
4
2
1
1
1
2
1
0
6/15/09 400
556
234
98
50
16
4
2
1
1
1
1
1
0
0
6/15/09 450
586
268
131
83
32
8
7
2
2
1
1
1
0
0
8/28/09
0
13892
7644
5913
6790
2337
345
102
32
17
9
5
2
1
0
8/28/09
10
1465
942
1046
2739
1365
270
113
21
11
8
4
5
2
0
8/28/09
50
5515
3313
2140
1889
975
339
234
64
34
18
14
22
14
4
8/28/09 100
1397
643
368
358
233
63
33
9
6
4
3
4
2
1
8/28/09 150
953
472
263
208
111
28
15
3
3
3
3
4
2
1
8/28/09 200
960
473
237
174
76
19
11
3
3
3
3
3
2
1
8/28/09 250
6870
3701
1840
1015
356
108
75
25
21
19
16
33
19
6
8/28/09 300
789
390
186
115
48
14
10
4
3
2
2
3
1
0
8/28/09 350
698
333
161
93
36
10
7
3
1
1
1
1
1
0
8/28/09 400
1086
518
242
141
54
19
16
7
6
6
6
8
4
1
8/28/09 450
1844
978
497
308
122
38
25
8
6
5
5
7
4
1
9/28/09
0
1601
1224
1288
2141
971
242
122
27
16
10
7
7
3
1
9/28/09
10
1558
1204
1226
2133
1040
259
118
24
15
9
5
6
3
1
9/28/09
50
5554
3294
2261
2023
972
375
238
61
32
21
16
20
11
4
9/28/09 100
3021
1912
1006
685
362
143
83
22
14
10
8
13
7
2
9/28/09 150
1113
600
347
272
133
39
21
7
4
4
3
5
2
1
9/28/09 200
1810
1044
560
371
142
37
19
5
4
3
3
4
3
1
9/28/09 250
920
479
234
149
56
15
10
4
3
2
1
3
1
0
9/28/09 300
877
435
210
127
46
15
10
4
2
2
2
3
1
1
9/28/09 350
691
340
162
96
34
10
6
2
2
2
2
2
1
0
9/28/09 400
956
487
240
140
50
14
8
3
2
2
1
2
1
0
9/28/09 450
937
482
233
134
43
10
6
2
1
1
1
1
0
0
10/30/09
0
2467
1211
765
689
242
68
51
11
6
6
4
5
3
1
10/30/09 10
1823
988
699
670
262
76
52
13
8
6
5
6
2
1
10/30/09 50
4521
1684
735
496
242
91
62
14
7
8
5
7
7
1
10/30/09 100
1694
667
281
176
75
25
16
5
4
4
3
4
3
1
10/30/09 150
728
308
143
99
54
13
8
3
2
1
1
1
1
1
10/30/09 200
1111
457
193
110
47
12
8
3
2
3
2
3
1
0
10/30/09 250
707
281
122
66
24
7
5
2
2
2
1
1
1
0
10/30/09 300
544
228
94
46
15
5
3
2
1
1
1
1
1
0
10/30/09 350
1048
440
182
100
36
13
8
3
3
3
2
4
2
1
10/30/09 400
667
273
116
54
15
4
2
1
1
1
1
1
0
0
10/30/09 450
1633
698
273
106
29
10
7
3
2
2
2
2
1
1
12/1/09
0
2633
1496
1022
959
372
126
87
22
16
11
9
13
7
2
12/1/09
10
2537
1528
1054
1028
456
166
115
34
21
17
13
17
10
3
12/1/09
50
2811
1586
1007
908
418
158
110
28
17
13
11
14
9
3
12/1/09 100
2707
1568
820
513
189
60
37
11
9
8
7
12
7
3
12/1/09 150
745
393
229
219
119
36
23
8
6
4
4
5
4
1
12/1/09 200
1437
744
377
262
120
36
26
8
6
5
4
7
5
2
12/1/09 250
448
212
102
60
21
6
5
2
1
1
1
1
1
0
12/1/09 300
964
509
259
166
69
24
18
6
4
4
3
4
2
1
12/1/09 350
560
269
126
76
30
10
7
2
2
2
2
2
1
0
12/1/09 400
924
466
234
148
57
18
11
3
2
2
2
2
1
1
12/1/09 450
902
480
244
169
66
22
16
5
4
3
3
3
2
1
130
0.5 ‐ 16
4357
6505
2397
2023
1208
1323
1231
1032
966
1122
37090
7990
14575
3124
2070
1967
14101
1567
1347
2113
3849
7662
7600
14880
7287
2552
4006
1878
1736
1349
1905
1852
5529
4609
7879
2959
1364
1953
1221
940
1846
1135
2768
6775
6999
7092
5950
1798
3040
862
2033
1088
1871
1918
Appendix E. Tahoe stormwater particle size distribution data. Analyzed on Beckman Coulter LS-13320 without dispersant, using Mie
theory and particle optical parameters nr = 1.550 and ni = 0.100. See Appendix B for sediment particle number calculations.
131
Site
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Sample
Type
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
BB-AS
BB-AS
BB-ASC
BB-AS
BB-ASC
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-MS
BB-ASC
BB-ASC
BB-ASC
BB-ASC
BB-ASC
BA-ASC
BA-GS
BA-MS
BA-MSR
BA-ASC
BA-ASC
BA-ASC
BA-ASC
BA-ASC
BA-AS
BA-ASC
BA-AS
BA-ASC
BA-AS
BA-ASC
BA-AS
BA-AS
BA-AS
BA-MS
BA-MSR
BA-GS
Sample
DateTime
9/22/07 8:00
10/19/07 21:16
11/9/07 16:14
11/11/07 0:33
1/4/08 9:21
1/4/08 13:36
11/1/08 7:00
11/1/08 20:19
1/22/09 4:15
1/22/09 11:34
1/22/09 21:19
2/23/09 10:39
5/1/09 21:05
5/3/09 6:18
7/2/09 13:16
7/29/09 13:44
3/15/03 3:49
3/15/03 6:02
3/15/03 6:33
3/15/03 11:35
3/26/03 9:15
4/2/03 10:49
4/6/03 12:59
4/10/03 16:27
4/10/03 19:23
4/26/03 12:28
4/28/03 10:09
4/28/03 11:50
5/6/03 11:20
5/7/03 16:50
5/8/03 0:22
5/8/03 5:44
6/23/03 17:02
7/23/03 15:07
7/31/03 13:07
2/16/04 10:31
2/16/04 12:25
2/16/04 14:42
12/26/06 21:22
12/26/06 21:30
12/26/06 21:31
12/26/06 21:32
2/8/07 19:46
2/9/07 2:10
2/9/07 9:04
2/10/07 10:03
2/10/07 18:01
2/11/07 10:55
2/11/07 13:20
3/6/07 11:49
3/6/07 13:48
3/6/07 16:40
4/22/07 10:03
8/31/07 8:46
9/22/07 7:52
9/22/07 8:26
9/22/07 8:45
9/22/07 8:46
9/22/07 8:47
Turbidity
(NTU)
123.0
121.0
246.0
38.0
102.0
59.4
47.2
55.4
43.5
39.5
8.3
41.8
42.6
23.0
204.0
178.0
122.0
136.0
186.0
178.0
67.3
17.0
25.2
17.6
17.1
300.0
60.4
220.0
37.2
29.1
29.5
27.9
105.0
729.0
1,129.0
366.0
302.0
253.0
168.0
327.0
295.0
308.0
74.2
52.7
48.9
58.0
222.0
14.3
69.4
47.6
79.9
34.0
67.8
1,349.0
329.0
54.0
65.6
74.4
46.5
TSS
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(mg/L)
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
238.5
N
1.374
2.164
3.241
4.659
6.434
8.576
11.188
14.509
18.795
24.267
31.307
39.967
139.5
N
3.398
5.250
7.747
11.032
15.106
19.820
25.108
31.121
38.028
45.899
55.160
66.013
359.5
N
2.614
3.866
5.578
7.893
10.885
14.568
19.056
24.639
31.561
39.874
49.655
60.321
26.0
N
14.914
18.185
20.583
23.217
26.988
31.600
36.427
41.559
47.330
53.664
61.068
69.307
70.0
Y
4.965
7.927
11.987
17.376
24.020
31.572
39.912
49.378
60.035
71.133
81.509
88.801
78.0
Y
2.477
3.775
5.489
7.665
10.297
13.405
17.180
22.052
28.525
37.018
47.865
60.171
44.4
Y
3.170
4.727
6.822
9.673
13.380
17.836
22.935
28.742
35.371
42.972
52.105
62.403
80.0
Y
2.596
3.759
5.254
7.207
9.680
12.645
16.149
20.425
25.722
32.229
40.368
50.016
46.0
Y
4.061
6.223
9.270
13.455
18.749
24.843
31.575
39.081
47.371
56.263
65.901
75.217
46.8
Y
3.621
5.176
7.265
10.159
13.966
18.483
23.459
28.904
35.012
42.032
50.567
60.308
4.0
Y
6.993
9.358
11.699
13.255
15.469
20.275
26.058
31.362
37.971
44.938
54.572
66.042
45.2
Y
3.970
5.259
6.706
8.476
10.653
13.135
15.837
18.919
22.676
27.470
33.929
41.886
46.4
Y
1.832
2.385
3.021
3.922
5.243
6.989
9.230
12.204
15.961
20.424
26.249
32.291
26.8
Y
4.056
4.847
5.479
6.289
7.554
9.180
11.136
13.805
17.356
21.573
27.669
35.814
338.0
Y
1.264
1.835
2.685
3.973
5.855
8.448
11.984
16.882
23.475
31.699
41.029
50.404
358.4
Y
1.582
2.314
3.289
4.567
6.184
8.208
10.918
14.815
20.318
27.517
36.104
45.165
28.4
N
0.213
0.982
2.185
3.652
5.304
7.282
9.955
13.946
20.064
29.184
42.016
57.624
110.3
N
2.308
3.359
4.695
6.450
8.891
12.381
17.342
24.204
33.251
44.427
56.932
68.895
198.7
N
2.637
3.704
5.018
6.660
8.790
11.665
15.686
21.448
29.619
40.682
54.414
68.732
188.4
N
2.775
3.885
5.238
6.905
9.040
11.904
15.917
21.713
30.022
41.407
55.740
70.903
72.8
N
0.326
1.506
3.369
5.725
8.596
12.303
17.334
24.180
33.163
44.338
57.163
69.896
14.4
N
0.145
0.658
1.439
2.420
3.724
5.697
8.800
13.526
20.332
29.624
41.705
56.080
45.2
N
0.985
1.846
2.861
3.974
5.375
7.321
9.997
13.766
19.281
27.582
40.241
57.199
17.2
N
0.104
0.475
1.027
1.651
2.304
3.101
4.340
6.592
10.757
18.057
30.142
47.877
20.8
N
0.061
0.283
0.622
1.003
1.354
1.683
2.121
3.034
5.113
9.495
18.248
34.048
320.8
N
0.429
1.945
4.228
6.942
10.127
14.311
20.248
28.701
40.170
54.600
70.570
84.544
51.2
N
0.231
1.062
2.337
3.825
5.390
7.145
9.471
13.023
18.621
27.059
38.860
53.142
299.2
N
0.363
1.661
3.653
6.053
8.830
12.359
17.301
24.471
34.578
47.900
63.554
78.376
41.2
N
0.220
1.028
2.210
3.529
4.945
6.578
8.635
11.613
16.214
23.455
35.188
52.854
30.0
N
0.169
0.771
1.572
2.372
3.257
4.336
5.566
7.247
10.055
14.984
24.198
40.199
34.8
N
0.183
0.837
1.714
2.607
3.605
4.817
6.240
8.288
11.649
17.175
26.825
42.566
33.6
N
0.227
1.027
2.063
3.075
4.218
5.669
7.467
10.142
14.453
21.280
32.406
48.937
96.5
N
0.042
0.197
0.448
0.768
1.135
1.565
2.126
2.947
4.174
5.866
7.768
9.452
954.8
N
3.336
4.441
5.750
7.358
9.412
12.093
15.673
20.633
27.624
37.236
49.439
62.333
3,661.6
N
2.652
3.451
4.339
5.353
6.580
8.158
10.308
13.366
17.734
23.814
32.008
42.703
616.0
N
2.984
4.028
5.262
6.740
8.556
10.879
14.019
18.538
25.176
34.603
46.952
60.635
421.6
N
4.492
6.142
8.216
11.003
14.939
20.382
27.481
36.168
46.153
56.981
67.790
77.310
162.4
N
2.453
3.579
5.015
6.852
9.238
12.365
16.495
22.013
29.395
39.068
51.089
64.269
180.0
N
0.347
1.224
3.046
6.068
10.197
15.012
20.100
25.222
30.156
34.651
39.466
46.882
353.0
N
0.366
1.207
2.893
5.630
9.313
13.588
18.163
22.965
27.960
33.035
38.751
46.590
361.5
N
0.363
1.168
2.764
5.336
8.787
12.784
17.047
21.500
26.120
30.826
36.122
43.405
361.0
N
0.373
1.178
2.759
5.299
8.717
12.711
17.022
21.569
26.301
31.118
36.555
44.095
81.5
N
2.262
3.657
5.561
7.989
10.813
13.836
16.998
20.567
25.070
31.113
39.493
50.604
65.5
N
1.789
3.040
4.806
7.125
9.860
12.762
15.715
18.949
22.861
27.851
34.742
44.369
42.5
N
3.098
5.389
8.676
13.268
19.083
25.135
30.356
35.583
42.287
49.982
60.020
70.613
74.5
N
1.216
2.227
3.653
5.812
9.156
13.331
17.151
20.946
25.893
31.169
38.064
47.337
428.5
N
0.746
1.416
2.440
3.859
5.589
7.473
9.524
12.100
15.653
20.494
27.102
35.588
8.0
N
3.992
7.011
11.220
16.357
23.628
33.333
42.671
52.579
63.900
70.909
75.893
79.222
54.5
N
4.899
8.007
12.620
19.191
27.504
36.485
45.069
53.069
60.890
68.882
77.515
85.354
39.2
N
4.318
6.816
10.392
15.390
21.660
28.457
35.252
42.435
50.524
59.216
68.167
76.544
78.0
N
4.993
8.378
12.979
18.953
27.375
37.244
44.699
51.709
60.881
65.201
70.127
75.543
25.6
N
8.362
13.473
20.662
29.874
39.411
46.933
52.212
57.290
62.938
68.136
72.292
76.408
90.0
N
1.551
3.010
5.392
8.963
13.703
19.252
25.279
31.780
38.865
46.477
54.855
63.975
1,722.0
N
0.894
1.824
3.380
5.775
9.088
13.275
18.474
25.023
32.714
40.575
48.326
56.891
371.5
N
1.281
2.150
3.452
5.337
7.928
11.302
15.576
20.887
27.245
34.552
42.911
52.309
49.0
N
1.334
2.047
3.015
4.410
6.502
9.538
13.547
18.102
22.472
26.362
30.749
36.592
35.0
N
1.778
2.713
3.992
5.871
8.788
13.175
19.122
25.988
32.663
38.586
44.652
52.034
32.5
N
1.780
2.727
4.020
5.924
8.906
13.451
19.676
26.876
33.804
39.831
45.947
53.489
30.0
N
1.795
2.765
4.061
5.930
8.835
13.294
19.472
26.646
33.464
39.226
45.013
52.119
Appendix E. Tahoe stormwater particle size distribution data (continued).
132
Site
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
Angora Eagle
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
B and Bonanza
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Sample
Type
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
AE-ASC
BB-AS
BB-AS
BB-ASC
BB-AS
BB-ASC
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-AS
BB-MS
BB-ASC
BB-ASC
BB-ASC
BB-ASC
BB-ASC
BA-ASC
BA-GS
BA-MS
BA-MSR
BA-ASC
BA-ASC
BA-ASC
BA-ASC
BA-ASC
BA-AS
BA-ASC
BA-AS
BA-ASC
BA-AS
BA-ASC
BA-AS
BA-AS
BA-AS
BA-MS
BA-MSR
BA-GS
Sample
DateTime
9/22/07 8:00
10/19/07 21:16
11/9/07 16:14
11/11/07 0:33
1/4/08 9:21
1/4/08 13:36
11/1/08 7:00
11/1/08 20:19
1/22/09 4:15
1/22/09 11:34
1/22/09 21:19
2/23/09 10:39
5/1/09 21:05
5/3/09 6:18
7/2/09 13:16
7/29/09 13:44
3/15/03 3:49
3/15/03 6:02
3/15/03 6:33
3/15/03 11:35
3/26/03 9:15
4/2/03 10:49
4/6/03 12:59
4/10/03 16:27
4/10/03 19:23
4/26/03 12:28
4/28/03 10:09
4/28/03 11:50
5/6/03 11:20
5/7/03 16:50
5/8/03 0:22
5/8/03 5:44
6/23/03 17:02
7/23/03 15:07
7/31/03 13:07
2/16/04 10:31
2/16/04 12:25
2/16/04 14:42
12/26/06 21:22
12/26/06 21:30
12/26/06 21:31
12/26/06 21:32
2/8/07 19:46
2/9/07 2:10
2/9/07 9:04
2/10/07 10:03
2/10/07 18:01
2/11/07 10:55
2/11/07 13:20
3/6/07 11:49
3/6/07 13:48
3/6/07 16:40
4/22/07 10:03
8/31/07 8:46
9/22/07 7:52
9/22/07 8:26
9/22/07 8:45
9/22/07 8:46
9/22/07 8:47
0.5-16 µm
<31 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
48.929
57.913
65.682
72.331
78.481
85.308
91.221
94.384
97.698
99.820
100.000
100.000
100.000
13,045,157
75.384
83.673
89.713
93.433
96.057
98.225
99.767
99.977
100.000
100.000
100.000
100.000
100.000
17,712,084
69.168
76.956
83.650
88.257
92.231
95.984
98.958
99.954
100.000
100.000
100.000
100.000
100.000
31,515,221
75.645
81.912
86.559
89.303
92.820
96.450
99.266
99.997
100.000
100.000
100.000
100.000
100.000
4,528,726
90.853
94.680
97.321
99.662
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
14,328,432
71.131
80.226
86.157
90.183
93.470
96.360
98.237
99.615
99.997
100.000
100.000
100.000
100.000
6,832,741
70.085
76.915
83.037
86.896
90.960
95.068
99.343
99.999
100.000
100.000
100.000
100.000
100.000
4,797,866
58.627
66.263
73.848
79.175
84.572
89.626
93.526
94.692
97.225
99.963
100.000
100.000
100.000
6,262,171
80.541
85.727
90.625
94.267
97.070
99.750
100.000
100.000
100.000
100.000
100.000
100.000
100.000
7,034,651
67.880
75.579
83.547
89.069
94.483
97.807
99.906
100.000
100.000
100.000
100.000
100.000
100.000
5,065,121
75.805
85.454
97.044
99.918
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
531,702
49.705
57.916
66.626
74.154
82.328
90.272
95.190
96.874
99.040
99.993
100.000
100.000
100.000
3,632,094
36.340
46.189
56.922
65.040
69.913
78.536
86.069
88.357
94.609
99.485
100.000
100.000
100.000
1,705,652
41.557
51.173
61.212
68.099
75.650
84.216
90.453
92.579
96.012
99.952
100.000
100.000
100.000
1,200,747
58.862
67.510
76.506
85.984
92.510
97.893
99.942
100.000
100.000
100.000
100.000
100.000
100.000
14,850,350
54.067
63.109
70.841
78.097
83.785
90.010
93.726
94.449
96.921
99.596
100.000
100.000
100.000
18,061,085
72.587
83.666
90.173
93.934
96.408
97.893
98.719
99.109
99.682
99.996
100.000
100.000
100.000
1,581,531
78.718
85.962
90.557
93.469
95.436
96.716
97.448
97.958
98.627
99.413
99.985
100.000
100.000
7,949,791
80.686
88.952
93.794
96.636
98.295
99.174
99.532
99.619
99.869
99.999
100.000
100.000
100.000
14,036,957
83.581
91.981
96.290
98.383
99.457
99.915
99.999
100.000
100.000
100.000
100.000
100.000
100.000
13,733,472
80.668
88.770
93.660
96.338
98.222
99.212
99.771
99.996
100.000
100.000
100.000
100.000
100.000
6,350,889
70.483
82.840
90.927
95.027
97.840
99.493
99.966
100.000
100.000
100.000
100.000
100.000
100.000
548,663
74.607
88.029
94.496
96.186
97.976
99.776
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,464,085
68.442
84.965
93.052
96.128
98.121
99.479
99.949
100.000
100.000
100.000
100.000
100.000
100.000
444,483
56.300
76.869
87.844
92.598
96.016
98.459
99.725
99.995
100.000
100.000
100.000
100.000
100.000
319,774
93.460
97.512
98.825
99.435
99.835
99.975
99.999
100.000
100.000
100.000
100.000
100.000
100.000
34,623,693
67.319
78.991
87.350
93.104
96.783
98.610
99.490
99.965
100.000
100.000
100.000
100.000
100.000
2,999,837
89.018
95.016
97.667
98.996
99.728
99.971
100.000
100.000
100.000
100.000
100.000
100.000
100.000
27,910,884
72.318
87.075
93.866
95.994
97.593
99.328
99.995
100.000
100.000
100.000
100.000
100.000
100.000
2,278,490
61.711
81.992
93.124
97.009
98.586
99.677
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,166,041
62.810
81.925
93.233
97.653
99.461
99.962
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,480,452
67.851
84.823
94.605
97.990
99.551
99.931
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,715,899
11.355
14.283
18.779
24.961
32.703
41.825
50.810
59.867
70.250
80.225
88.627
97.425
100.000
1,112,154
73.231
81.251
86.900
91.391
94.676
96.435
97.155
97.596
98.335
98.925
99.173
99.793
100.000
68,191,190
55.068
65.456
72.609
78.148
83.565
89.403
90.743
92.301
96.406
98.809
99.244
99.627
100.000
180,928,590
73.139
82.963
89.283
93.212
95.857
97.506
98.467
98.948
99.561
99.987
100.000
100.000
100.000
41,197,913
84.561
89.992
93.646
96.122
97.788
98.781
99.191
99.334
99.747
99.996
100.000
100.000
100.000
47,481,530
76.432
85.843
91.613
94.963
97.067
98.180
98.600
98.799
99.255
99.857
99.998
100.000
100.000
12,320,773
56.521
68.396
79.690
87.146
92.186
96.724
98.709
99.124
99.709
99.998
100.000
100.000
100.000
14,583,706
56.082
67.229
77.518
85.921
91.668
97.242
99.913
100.000
100.000
100.000
100.000
100.000
100.000
26,634,033
52.576
63.785
74.975
84.187
90.647
97.028
99.899
100.000
100.000
100.000
100.000
100.000
100.000
25,866,929
53.662
65.326
76.374
85.309
91.366
97.311
99.927
100.000
100.000
100.000
100.000
100.000
100.000
25,687,125
62.786
73.814
81.771
87.788
92.265
96.237
97.728
98.053
99.002
99.988
100.000
100.000
100.000
7,726,330
55.175
66.299
76.095
82.911
88.762
94.254
96.963
97.755
98.999
99.989
100.000
100.000
100.000
5,689,912
78.919
86.407
90.141
93.326
94.864
98.515
99.989
100.000
100.000
100.000
100.000
100.000
100.000
6,925,254
55.087
61.945
67.427
72.446
78.231
83.999
89.694
91.197
94.762
99.423
100.000
100.000
100.000
5,573,412
44.605
53.713
61.671
68.633
75.742
83.346
89.338
91.534
95.453
99.086
99.993
100.000
100.000
21,086,207
85.894
87.546
88.461
90.591
93.662
98.804
99.998
100.000
100.000
100.000
100.000
100.000
100.000
1,680,417
90.297
94.553
96.342
97.382
98.560
99.797
100.000
100.000
100.000
100.000
100.000
100.000
100.000
12,322,717
81.958
86.753
89.857
91.904
94.616
98.426
99.926
100.000
100.000
100.000
100.000
100.000
100.000
6,973,409
78.499
81.985
83.158
86.564
90.945
96.086
99.675
100.000
100.000
100.000
100.000
100.000
100.000
18,236,008
80.357
82.463
84.034
86.854
92.406
98.948
99.999
100.000
100.000
100.000
100.000
100.000
100.000
8,851,013
71.138
76.994
81.417
85.784
90.561
95.321
99.138
99.984
100.000
100.000
100.000
100.000
100.000
10,264,740
63.887
70.708
79.904
90.981
96.241
98.668
99.980
100.000
100.000
100.000
100.000
100.000
100.000
129,463,210
61.634
71.022
80.590
90.228
95.190
98.520
99.975
100.000
100.000
100.000
100.000
100.000
100.000
24,258,514
42.865
50.459
60.304
71.752
79.148
85.715
91.164
92.985
96.974
99.971
100.000
100.000
100.000
2,534,480
59.561
68.241
76.797
85.620
90.251
93.832
97.497
99.712
100.000
100.000
100.000
100.000
100.000
2,413,775
61.227
70.205
78.851
87.649
92.382
96.321
99.209
99.898
100.000
100.000
100.000
100.000
100.000
2,274,056
59.540
68.082
76.591
85.199
89.725
93.648
96.930
99.536
100.000
100.000
100.000
100.000
100.000
2,114,860
Appendix E. Tahoe stormwater particle size distribution data (continued).
133
Site
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Sample
Type
BA-AS
BA-AS
BA-AS
BA-ASC
BA-AS
BA-AS
BA-ASC
BA-ASC
BA-ASC
BA-ASC
BM-ASC
BM-ASC
BM-GS
BM-MS
BM-MSR
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-MS
BM-MSR
BM-GS
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-MS
BM-MSR
BM-GS
BM-ASC
BM-ASC
BM-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-AS
CI-ASC
CI-AS
Sample
DateTime
10/19/07 20:41
10/19/07 20:56
10/19/07 21:21
10/29/07 15:33
10/29/07 16:11
10/29/07 16:15
1/4/08 5:45
1/4/08 8:33
1/4/08 11:04
1/4/08 13:18
12/22/06 11:52
12/26/06 19:59
12/26/06 20:55
12/26/06 20:56
12/26/06 20:57
12/26/06 21:57
12/26/06 23:14
1/3/07 22:48
1/4/07 0:45
1/4/07 5:24
2/8/07 19:37
2/8/07 20:24
2/8/07 22:57
2/8/07 22:58
2/8/07 22:59
2/9/07 8:58
2/10/07 9:09
2/10/07 18:39
2/11/07 10:58
2/11/07 11:25
2/11/07 12:28
3/6/07 10:50
3/6/07 13:06
3/6/07 14:24
4/22/07 8:47
8/31/07 8:47
8/31/07 10:16
9/22/07 7:51
9/22/07 8:13
9/22/07 8:40
10/19/07 19:42
10/19/07 20:50
10/19/07 21:24
10/29/07 15:37
10/29/07 16:09
10/29/07 16:22
1/4/08 3:51
1/4/08 7:22
1/4/08 7:23
1/4/08 7:24
1/4/08 8:27
1/4/08 12:13
1/4/08 14:39
3/15/03 7:17
7/31/03 14:38
8/1/03 16:49
8/21/03 8:07
8/21/03 12:46
8/21/03 16:21
8/21/03 20:07
Turbidity
(NTU)
43.4
86.1
45.9
99.7
63.2
43.1
326.0
117.0
196.0
67.1
667.0
565.0
735.0
703.0
681.0
359.0
213.0
1,240.0
235.0
119.0
1,069.0
231.0
95.1
101.0
120.0
164.0
169.0
309.0
239.0
220.0
101.0
319.0
193.0
135.0
194.0
562.0
428.0
191.0
60.7
66.7
132.0
45.1
64.9
156.0
95.3
64.4
607.0
332.0
307.0
290.0
361.0
204.0
133.0
140.0
1,618.0
2,384.0
269.0
214.0
3,264.0
1,074.0
TSS
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(mg/L)
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
26.5
N
2.647
3.965
5.644
7.828
10.573
13.839
17.791
22.914
29.426
36.922
45.620
56.599
41.5
N
1.349
2.231
3.425
5.016
7.172
10.210
14.510
20.049
26.011
31.659
38.177
47.540
33.5
N
1.609
2.642
3.931
5.482
7.484
10.481
15.200
21.726
28.811
35.203
42.298
52.460
202.5
N
1.127
1.762
2.645
3.849
5.436
7.443
9.897
12.836
16.340
20.656
26.530
34.895
91.5
N
1.222
1.967
3.023
4.481
6.418
8.889
11.951
15.589
19.624
23.970
29.417
36.980
54.5
N
1.591
2.629
4.142
6.303
9.251
13.061
17.791
23.320
29.032
34.398
40.710
49.366
350.8
Y
3.189
5.529
9.144
14.363
21.042
28.503
36.149
43.982
52.249
60.964
70.597
80.966
153.2
Y
1.958
3.474
5.768
9.001
13.128
17.930
23.329
29.556
36.867
45.306
55.069
65.654
205.5
Y
2.752
4.736
7.753
12.055
17.573
23.889
30.636
37.806
45.544
53.963
63.615
74.185
88.8
Y
2.034
3.408
5.420
8.408
12.487
17.144
21.933
27.452
33.873
40.675
48.425
57.739
661.0
N
0.404
1.676
4.537
9.528
16.595
25.089
34.418
44.431
54.890
64.831
73.603
81.754
549.0
N
0.505
1.758
4.360
8.719
14.804
22.173
30.435
39.459
48.985
58.295
67.144
75.978
695.0
N
0.449
1.615
4.073
8.225
14.042
21.099
29.041
37.798
47.186
56.548
65.553
74.535
658.5
N
0.459
1.613
4.022
8.077
13.767
20.701
28.531
37.154
46.366
55.572
64.584
73.771
638.0
N
0.427
1.587
4.067
8.274
14.160
21.250
29.172
37.906
47.318
56.693
65.651
74.627
401.5
N
0.446
1.448
3.458
6.761
11.339
16.922
23.337
30.651
38.843
47.486
56.273
65.397
215.0
N
0.518
1.763
4.309
8.520
14.312
21.195
28.735
36.800
45.255
53.692
62.226
71.521
694.0
N
0.805
2.822
6.971
13.711
22.530
32.138
41.527
50.688
59.823
68.300
76.063
84.087
263.0
N
0.569
2.012
5.011
9.981
16.745
24.593
32.895
41.483
50.324
59.078
67.744
76.238
125.0
N
0.470
1.731
4.411
8.932
15.181
22.519
30.302
38.232
46.128
53.637
60.871
67.743
877.0
N
3.383
5.553
8.716
13.125
18.708
25.040
31.819
39.173
47.187
55.519
64.122
72.984
324.0
N
2.605
4.294
6.678
9.859
13.773
18.271
23.403
29.513
36.830
45.197
54.451
64.100
86.0
N
4.127
6.443
9.479
13.316
17.849
22.893
28.520
35.160
43.030
51.754
60.779
68.923
84.0
N
4.196
6.548
9.642
13.597
18.328
23.615
29.483
36.334
44.312
52.961
61.809
69.544
85.5
N
4.306
6.712
9.863
13.850
18.562
23.790
29.589
36.409
44.492
53.486
62.844
71.113
127.5
N
4.432
6.914
10.160
14.269
19.086
24.256
29.636
35.581
42.548
50.681
59.972
69.212
238.0
N
1.621
2.937
4.914
7.649
11.017
14.722
18.645
23.131
28.726
35.867
45.262
56.164
772.0
N
1.436
2.362
3.669
5.390
7.433
9.669
12.153
15.258
19.464
25.080
32.232
40.374
310.0
N
2.708
4.871
8.089
12.518
17.970
23.994
30.346
37.294
45.196
54.041
63.864
73.852
343.0
N
1.890
3.229
5.192
7.966
11.542
15.552
19.700
24.460
30.415
37.316
45.441
55.031
139.0
N
2.364
3.910
6.214
9.533
13.622
17.768
22.034
27.757
34.965
42.087
50.544
61.873
275.0
N
4.001
6.934
11.023
16.299
22.422
28.854
35.362
42.312
50.204
59.100
68.694
77.383
208.0
N
3.350
5.753
9.108
13.468
18.614
24.182
30.036
36.499
43.975
52.527
62.015
71.125
116.0
N
5.055
8.278
12.615
18.143
24.599
31.506
38.634
46.279
54.761
63.896
73.248
81.332
368.5
N
2.535
4.177
6.533
9.719
13.648
18.090
22.965
28.470
34.779
41.828
49.659
58.166
1,561.0
N
1.164
2.061
3.397
5.250
7.583
10.305
13.507
17.540
22.687
28.886
36.048
44.003
1,060.0
N
1.238
2.065
3.251
4.866
6.935
9.474
12.613
16.602
21.609
27.636
34.765
42.838
434.5
N
1.223
2.060
3.263
4.893
6.944
9.405
12.419
16.327
21.404
27.698
35.222
43.616
125.0
N
1.355
2.312
3.731
5.712
8.239
11.228
14.747
19.067
24.322
30.349
37.074
44.290
76.0
N
1.792
3.015
4.797
7.252
10.287
13.698
17.580
22.437
28.495
35.326
42.615
49.651
84.5
N
4.896
7.871
11.779
16.760
22.657
29.091
36.026
43.955
52.936
62.191
71.535
80.150
169.0
N
1.918
3.085
4.668
6.700
9.150
12.011
15.442
19.819
25.540
32.907
42.285
53.408
57.0
N
2.366
3.939
6.088
8.839
12.079
15.685
19.780
24.796
31.036
38.558
47.864
58.414
207.0
N
1.468
2.631
4.413
7.058
10.643
14.845
19.319
24.428
30.624
37.520
45.749
55.819
195.0
N
0.930
1.745
3.027
4.899
7.355
10.227
13.410
17.109
21.605
26.974
33.756
42.367
79.5
N
1.562
2.844
4.976
8.336
13.020
18.536
24.277
30.315
36.801
43.280
50.999
60.340
603.5
Y
3.518
5.956
9.597
14.710
21.155
28.400
36.084
44.343
53.246
62.371
71.579
80.418
244.5
Y
5.035
8.158
12.820
19.573
28.400
38.448
48.759
58.959
68.897
77.972
85.547
90.784
232.0
Y
4.878
7.943
12.490
18.999
27.441
37.077
47.079
57.066
66.798
75.791
83.678
89.181
222.5
Y
5.279
8.519
13.329
20.261
29.269
39.467
49.892
60.162
70.075
79.142
87.014
92.114
373.5
Y
2.555
4.428
7.278
11.347
16.612
22.767
29.571
37.063
45.294
54.093
63.465
72.872
323.5
Y
2.406
4.073
6.542
9.975
14.318
19.338
24.937
31.324
38.710
47.057
56.399
66.251
190.0
Y
2.751
4.285
6.390
9.474
13.694
18.486
23.355
28.896
35.243
41.872
49.208
57.653
602.0
N
2.483
3.342
4.364
5.592
7.088
8.961
11.425
14.919
20.094
27.689
38.314
51.450
2,254.0
N
2.914
3.940
5.224
6.905
9.168
12.193
16.194
21.487
28.348
36.757
45.907
54.016
2,302.3
N
4.869
6.445
8.338
10.716
13.782
17.697
22.703
29.330
38.137
49.190
61.187
71.333
454.5
N
2.363
3.233
4.334
5.786
7.767
10.475
14.135
19.020
25.396
33.435
43.003
53.276
262.0
N
2.189
3.058
4.147
5.521
7.270
9.530
12.544
16.762
22.805
31.300
42.554
55.462
3,413.0
N
3.835
5.158
6.768
8.804
11.454
14.902
19.420
25.560
34.055
45.343
58.541
70.388
911.5
N
5.328
7.191
9.526
12.593
16.679
21.914
28.339
36.147
45.587
56.624
68.204
78.206
Appendix E. Tahoe stormwater particle size distribution data (continued).
134
Site
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Beach Access
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Biltmore
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Sample
Type
BA-AS
BA-AS
BA-AS
BA-ASC
BA-AS
BA-AS
BA-ASC
BA-ASC
BA-ASC
BA-ASC
BM-ASC
BM-ASC
BM-GS
BM-MS
BM-MSR
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-MS
BM-MSR
BM-GS
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-ASC
BM-ASC
BM-ASC
BM-AS
BM-ASC
BM-MS
BM-MSR
BM-GS
BM-ASC
BM-ASC
BM-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-AS
CI-ASC
CI-AS
Sample
DateTime
10/19/07 20:41
10/19/07 20:56
10/19/07 21:21
10/29/07 15:33
10/29/07 16:11
10/29/07 16:15
1/4/08 5:45
1/4/08 8:33
1/4/08 11:04
1/4/08 13:18
12/22/06 11:52
12/26/06 19:59
12/26/06 20:55
12/26/06 20:56
12/26/06 20:57
12/26/06 21:57
12/26/06 23:14
1/3/07 22:48
1/4/07 0:45
1/4/07 5:24
2/8/07 19:37
2/8/07 20:24
2/8/07 22:57
2/8/07 22:58
2/8/07 22:59
2/9/07 8:58
2/10/07 9:09
2/10/07 18:39
2/11/07 10:58
2/11/07 11:25
2/11/07 12:28
3/6/07 10:50
3/6/07 13:06
3/6/07 14:24
4/22/07 8:47
8/31/07 8:47
8/31/07 10:16
9/22/07 7:51
9/22/07 8:13
9/22/07 8:40
10/19/07 19:42
10/19/07 20:50
10/19/07 21:24
10/29/07 15:37
10/29/07 16:09
10/29/07 16:22
1/4/08 3:51
1/4/08 7:22
1/4/08 7:23
1/4/08 7:24
1/4/08 8:27
1/4/08 12:13
1/4/08 14:39
3/15/03 7:17
7/31/03 14:38
8/1/03 16:49
8/21/03 8:07
8/21/03 12:46
8/21/03 16:21
8/21/03 20:07
0.5-16 µm
<31 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
66.445
78.349
88.399
94.155
96.223
97.435
99.271
99.993
100.000
100.000
100.000
100.000
100.000
2,338,294
58.128
71.282
84.753
95.792
99.425
99.992
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,577,281
62.447
74.847
86.598
94.853
99.102
99.987
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,299,866
45.365
57.626
70.254
81.231
88.990
95.576
99.410
99.650
99.803
99.985
100.000
100.000
100.000
9,117,100
45.777
56.909
69.094
80.509
87.453
93.541
97.287
98.499
99.719
100.000
100.000
100.000
100.000
4,897,767
57.965
68.164
78.706
86.812
92.175
97.230
99.220
99.871
100.000
100.000
100.000
100.000
100.000
4,165,811
87.219
91.989
95.378
97.390
98.804
99.879
100.000
100.000
100.000
100.000
100.000
100.000
100.000
61,350,655
73.875
80.310
85.006
88.887
92.394
95.333
98.858
99.991
100.000
100.000
100.000
100.000
100.000
17,143,450
80.894
87.090
91.655
94.697
97.433
99.740
100.000
100.000
100.000
100.000
100.000
100.000
100.000
30,200,487
63.151
69.577
74.690
79.766
83.923
88.252
91.996
92.546
96.638
99.985
100.000
100.000
100.000
9,011,568
87.537
91.731
94.567
96.749
98.258
99.720
100.000
100.000
100.000
100.000
100.000
100.000
100.000
83,590,842
82.019
86.697
90.280
93.028
95.517
98.677
99.978
100.000
100.000
100.000
100.000
100.000
100.000
64,199,285
81.406
86.512
90.478
93.503
96.036
99.057
99.994
100.000
100.000
100.000
100.000
100.000
100.000
76,577,432
80.579
85.778
89.875
93.000
95.306
98.306
99.955
100.000
100.000
100.000
100.000
100.000
100.000
71,345,362
81.641
86.738
90.551
93.678
96.217
98.859
99.976
100.000
100.000
100.000
100.000
100.000
100.000
70,575,349
73.413
79.960
84.965
89.192
92.843
96.299
99.350
99.997
100.000
100.000
100.000
100.000
100.000
36,568,704
78.513
84.345
88.393
91.554
94.755
97.995
99.881
100.000
100.000
100.000
100.000
100.000
100.000
24,553,466
88.121
91.918
95.101
96.922
98.214
99.832
100.000
100.000
100.000
100.000
100.000
100.000
100.000
126,386,921
81.824
87.319
91.765
94.801
97.218
99.721
100.000
100.000
100.000
100.000
100.000
100.000
100.000
35,045,092
72.211
76.848
80.516
83.812
88.024
93.468
97.733
99.907
100.000
100.000
100.000
100.000
100.000
14,873,476
78.574
83.548
87.447
90.222
93.352
96.750
98.805
99.922
100.000
100.000
100.000
100.000
100.000
137,132,829
72.056
78.959
84.606
89.249
93.426
96.901
99.579
100.000
100.000
100.000
100.000
100.000
100.000
38,432,280
74.108
79.354
83.054
85.993
89.574
93.843
97.223
99.842
100.000
100.000
100.000
100.000
100.000
13,303,992
74.432
79.517
82.903
86.132
90.006
94.180
97.713
99.905
100.000
100.000
100.000
100.000
100.000
13,261,614
76.486
81.878
85.444
88.388
91.812
95.463
98.523
99.968
100.000
100.000
100.000
100.000
100.000
13,736,992
75.767
81.818
85.572
88.912
92.580
96.761
99.191
99.969
100.000
100.000
100.000
100.000
100.000
21,065,358
65.208
74.267
80.444
85.781
90.230
94.133
98.050
99.771
100.000
100.000
100.000
100.000
100.000
22,795,484
48.312
56.211
62.790
68.874
74.618
80.811
85.659
87.854
92.552
97.955
99.974
100.000
100.000
49,847,867
80.727
87.259
92.038
95.097
97.269
99.429
99.998
100.000
100.000
100.000
100.000
100.000
100.000
48,487,972
62.365
69.693
76.543
82.447
88.458
93.045
97.511
99.838
100.000
100.000
100.000
100.000
100.000
33,333,374
71.026
79.108
86.314
90.134
94.892
99.282
99.998
100.000
100.000
100.000
100.000
100.000
100.000
15,682,394
83.173
88.778
92.825
95.677
98.496
99.972
100.000
100.000
100.000
100.000
100.000
100.000
100.000
55,377,138
77.876
84.488
89.396
92.974
96.303
99.488
99.999
100.000
100.000
100.000
100.000
100.000
100.000
34,480,261
86.276
90.902
94.140
96.322
98.142
99.774
100.000
100.000
100.000
100.000
100.000
100.000
100.000
25,220,541
65.402
73.277
80.996
87.133
92.430
96.496
99.172
99.845
100.000
100.000
100.000
100.000
100.000
42,892,044
51.605
59.614
69.903
80.569
85.628
89.637
93.115
93.898
96.678
99.517
100.000
100.000
100.000
102,169,221
50.618
58.323
66.112
74.017
79.272
84.515
89.161
91.689
96.112
99.656
100.000
100.000
100.000
62,867,816
51.501
59.464
67.369
74.446
79.451
84.750
89.036
91.489
95.890
99.535
100.000
100.000
100.000
26,001,563
50.273
56.912
64.429
71.915
77.390
82.051
86.760
89.303
94.863
99.775
100.000
100.000
100.000
8,738,235
54.732
60.388
66.065
71.620
75.121
79.484
84.345
87.603
93.942
99.925
100.000
100.000
100.000
6,675,219
85.221
90.875
95.586
98.382
99.738
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
16,817,047
64.148
74.030
82.237
88.940
93.567
97.701
99.827
100.000
100.000
100.000
100.000
100.000
100.000
13,488,167
67.458
76.868
84.144
90.610
94.330
97.712
99.577
99.941
100.000
100.000
100.000
100.000
100.000
6,119,901
63.598
71.255
77.860
83.008
87.948
92.676
96.768
99.672
100.000
100.000
100.000
100.000
100.000
18,215,738
50.928
59.368
66.799
73.576
79.160
85.504
90.034
91.783
96.330
99.759
100.000
100.000
100.000
12,103,783
68.596
77.195
83.882
89.164
92.684
97.461
99.333
99.970
100.000
100.000
100.000
100.000
100.000
8,194,524
84.749
89.904
93.331
96.188
97.943
99.743
100.000
100.000
100.000
100.000
100.000
100.000
100.000
107,354,216
92.775
96.247
97.959
98.812
99.748
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
56,274,775
91.667
95.854
97.730
98.954
99.864
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
52,074,561
94.067
98.546
99.994
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
52,872,590
78.439
84.365
89.201
93.183
95.909
98.744
99.986
100.000
100.000
100.000
100.000
100.000
100.000
51,987,483
72.764
79.135
85.267
89.685
93.325
96.643
99.232
99.902
100.000
100.000
100.000
100.000
100.000
39,214,244
62.048
68.688
73.276
78.823
83.462
87.861
91.560
93.855
97.385
99.988
100.000
100.000
100.000
20,782,232
65.028
76.785
85.537
91.488
95.139
97.257
98.323
98.861
99.601
99.993
100.000
100.000
100.000
33,179,008
60.141
65.010
69.780
74.648
78.368
81.777
84.732
87.153
90.084
92.841
95.091
97.940
100.000
155,813,042
78.271
83.024
86.710
89.840
91.946
93.417
94.519
95.363
96.410
97.223
97.782
99.083
100.000
236,495,742
63.208
72.009
79.151
84.951
89.198
92.675
94.991
96.405
97.904
98.893
99.137
99.734
100.000
26,916,779
67.641
77.439
84.385
89.234
92.694
95.139
96.538
97.189
97.993
98.763
99.283
99.974
100.000
15,149,657
78.531
83.982
87.674
90.478
92.891
94.906
96.192
96.861
97.611
98.272
98.693
99.590
100.000
297,180,698
85.488
90.548
93.577
95.475
96.595
97.287
97.693
97.953
98.459
99.002
99.454
99.945
100.000
113,974,184
Appendix E. Tahoe stormwater particle size distribution data (continued).
135
Site
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Sample
Type
CI-AS
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-AS
CI-MS
CI-AS
CI-AS
CI-MS
CI-AS
CI-AS
MD-ASC
MD-AS
MD-ASC
MD-ASC
MD-ASC
MD-ASC
MD-ASC
MD-ASC
NW-ASC
NW-ASC
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-ASC
NW-ASC
NW-ASC
NW-GS
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-ASC
O3-AS
O3-AS
O3-AS
O3-AS
O3-ASC
O3-AS
O3-AS
O3-AS
O3-ASC
O3-AS
O3-AS
Sample
DateTime
12/6/03 9:14
12/6/03 16:36
12/6/03 19:22
2/16/04 14:56
2/18/04 5:34
2/25/04 10:05
3/9/04 11:32
5/10/04 10:10
6/9/04 7:11
9/20/04 10:56
9/20/04 11:04
9/20/04 11:10
9/20/04 11:14
9/20/04 11:30
9/20/04 11:44
9/20/04 12:17
3/15/03 2:41
7/31/03 23:05
8/21/03 11:33
12/6/03 3:28
12/6/03 6:17
12/6/03 16:24
12/24/03 12:56
2/16/04 12:34
10/29/07 15:23
11/10/07 22:46
1/4/08 7:26
1/4/08 7:51
1/4/08 7:52
1/4/08 13:32
1/4/08 17:36
3/13/08 2:00
5/24/08 4:06
5/26/08 13:39
5/26/08 15:10
10/3/08 22:12
10/3/08 22:20
10/3/08 22:21
10/31/08 15:18
11/1/08 11:47
11/1/08 12:05
11/1/08 12:07
1/21/09 20:37
1/22/09 3:02
1/22/09 4:18
1/22/09 4:19
1/22/09 8:54
1/22/09 17:05
1/23/09 14:15
3/23/03 4:10
4/16/03 10:40
4/17/03 14:25
4/20/03 14:46
4/21/03 9:09
4/24/03 14:19
4/26/03 0:06
4/27/03 16:58
4/28/03 4:39
5/9/03 21:24
6/23/03 17:10
Turbidity
(NTU)
245.0
182.0
224.0
357.0
84.3
148.0
24.4
172.0
134.0
617.0
725.0
638.0
551.0
246.0
209.0
263.0
15.0
388.0
314.0
20.1
6.9
7.7
7.1
17.6
137.0
32.6
297.0
423.0
930.0
164.0
138.0
61.8
103.0
123.0
201.0
106.0
314.0
386.0
91.7
59.1
147.0
137.0
295.0
491.0
1,189.0
1,167.0
212.0
86.7
134.0
68.1
46.8
66.8
30.5
196.0
50.2
39.1
31.9
68.0
56.0
152.0
TSS
(mg/L)
262.4
198.0
266.0
382.5
76.4
155.2
22.8
232.0
280.5
552.5
891.0
793.0
738.0
295.0
242.0
193.0
159.6
756.8
792.0
35.6
8.4
5.6
8.4
16.0
202.0
24.5
188.0
243.0
266.5
115.5
107.0
57.6
90.0
128.0
252.5
78.4
100.8
99.5
83.5
81.0
191.5
160.5
139.5
443.5
1,014.5
1,074.5
205.0
49.5
114.0
92.0
28.0
96.4
96.8
214.8
112.8
77.6
24.4
54.0
72.0
192.0
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
1.952
2.970
4.314
6.049
8.236
10.962
14.414
19.024
25.485
34.559
46.626
60.326
N
1.860
2.595
3.481
4.537
5.802
7.389
9.560
12.841
18.040
26.215
38.696
55.732
N
1.781
2.514
3.414
4.499
5.798
7.393
9.497
12.550
17.242
24.479
35.439
50.620
N
3.129
4.259
5.612
7.237
9.209
11.683
14.988
19.771
26.921
37.288
51.144
66.600
N
2.352
3.451
4.789
6.394
8.388
11.066
14.965
20.884
29.657
41.779
56.761
71.854
N
2.372
3.252
4.297
5.528
6.997
8.843
11.393
15.279
21.418
30.865
44.563
61.665
N
1.303
2.105
3.019
4.066
5.461
7.427
10.246
14.566
21.289
31.369
44.913
60.060
N
0.548
1.303
2.580
4.464
6.912
9.855
13.403
17.961
24.083
32.154
42.125
52.697
N
0.156
0.755
1.817
3.321
5.201
7.409
10.037
13.397
17.938
24.083
32.259
42.488
N
0.707
2.661
6.883
14.149
24.496
37.127
51.044
65.306
78.674
89.397
96.190
98.955
N
0.504
1.450
3.240
6.100
10.041
14.911
20.646
27.329
34.923
43.005
51.074
58.948
N
0.340
0.903
2.023
4.028
7.145
11.187
15.745
20.816
26.690
33.026
39.562
46.241
N
0.284
0.953
2.328
4.638
7.899
11.925
16.613
22.115
28.455
35.248
42.429
49.858
N
0.523
1.580
3.771
7.683
13.707
21.586
30.486
39.431
47.809
55.275
61.835
68.408
N
0.634
1.681
2.764
4.041
7.163
12.984
18.706
23.110
29.194
32.397
36.242
40.697
N
0.741
1.904
3.507
6.225
11.616
19.779
28.077
35.101
42.143
46.764
51.758
56.332
N
2.361
3.281
4.440
5.928
7.865
10.407
13.789
18.393
24.683
33.028
43.404
54.816
N
1.508
2.040
2.681
3.463
4.442
5.713
7.455
9.963
13.605
18.736
25.596
33.965
N
1.151
1.536
1.980
2.494
3.091
3.805
4.716
5.997
7.928
10.908
15.525
22.356
N
0.752
1.080
1.512
2.108
2.976
4.241
6.029
8.458
11.673
15.941
21.894
30.681
N
0.473
1.111
1.803
2.483
3.458
4.908
6.932
9.871
13.660
18.136
23.713
31.829
N
0.469
1.109
1.718
2.226
3.088
4.501
6.338
8.830
12.056
16.187
21.511
29.313
N
0.661
1.358
2.223
3.346
4.491
5.204
7.085
11.050
14.263
19.785
26.421
36.490
N
1.475
2.285
3.331
4.649
6.293
8.326
10.869
14.253
19.101
26.301
36.919
51.069
N
1.234
2.232
3.840
6.294
9.654
13.682
18.192
23.487
29.921
37.361
46.195
56.364
N
3.201
4.326
5.953
8.415
11.772
15.703
20.044
25.133
31.079
37.439
44.804
53.158
Y
5.431
8.554
12.864
18.735
26.162
34.593
43.459
52.709
62.422
72.029
80.612
87.173
Y
4.841
7.894
12.056
17.590
24.447
32.235
40.722
50.112
60.342
70.567
80.157
88.591
Y
5.281
8.437
12.718
18.494
25.755
33.988
42.790
52.253
62.188
71.603
80.151
88.191
Y
5.609
8.962
13.525
19.552
26.868
34.908
43.406
52.706
62.898
73.310
83.110
89.896
Y
3.879
6.038
9.026
13.066
18.111
23.811
29.949
36.763
44.461
52.842
61.971
71.106
Y
6.057
8.441
11.700
16.294
22.295
29.201
36.551
44.281
52.174
59.716
66.825
71.908
Y
3.018
4.832
7.371
10.790
15.068
20.004
25.485
31.680
38.859
47.170
56.778
66.854
Y
3.032
4.844
7.500
11.275
16.207
22.024
28.502
35.739
43.901
52.953
62.876
72.482
Y
2.003
3.328
5.334
8.229
12.023
16.508
21.595
27.581
34.848
43.450
53.265
63.358
Y
2.286
3.585
5.456
8.093
11.510
15.479
19.800
24.580
30.100
36.597
44.663
53.941
Y
4.145
6.382
9.251
13.074
17.987
23.739
30.083
37.160
45.172
54.111
64.485
73.823
Y
5.172
7.729
10.981
15.351
20.916
27.251
34.135
41.697
49.423
56.532
64.619
73.390
Y
5.033
7.187
9.807
13.190
17.563
22.849
28.834
35.379
42.281
49.393
57.969
68.432
Y
1.803
2.731
3.994
5.740
8.108
11.175
14.957
19.340
24.120
29.423
36.370
45.837
Y
2.130
3.319
4.918
7.062
9.799
13.042
16.709
20.819
25.428
30.736
37.705
47.253
Y
2.672
4.175
6.205
8.962
12.576
17.011
22.182
28.001
34.298
41.083
49.281
59.011
Y
7.516
12.207
18.548
27.121
37.640
48.589
58.497
67.140
74.882
81.859
88.192
91.850
Y
2.447
4.333
7.207
11.299
16.557
22.650
29.401
37.048
45.832
55.524
65.699
75.533
Y
2.185
3.834
6.277
9.655
13.902
18.825
24.490
31.413
40.038
50.147
61.020
71.534
Y
2.017
3.503
5.689
8.687
12.416
16.700
21.655
27.831
35.621
44.725
54.640
65.045
Y
3.778
6.319
10.125
15.564
22.542
30.373
38.403
46.496
54.631
62.518
70.406
78.554
Y
8.188
12.361
17.819
25.209
34.459
44.384
53.933
63.143
71.976
79.888
87.075
91.148
Y
4.401
7.041
10.940
16.535
23.823
32.165
40.865
49.721
58.771
67.850
76.855
84.644
N
2.083
2.970
4.042
5.333
6.957
9.173
12.460
17.560
25.266
36.032
49.281
62.281
N
0.272
1.245
2.743
4.578
6.813
9.915
14.660
21.930
32.361
46.030
61.881
76.794
N
0.265
1.216
2.677
4.424
6.394
8.863
12.434
18.003
26.537
38.763
54.585
71.351
N
0.144
0.666
1.482
2.489
3.668
5.159
7.247
10.358
15.042
21.958
31.834
44.578
N
0.184
0.843
1.848
3.017
4.244
5.622
7.436
10.165
14.422
20.870
30.116
41.890
N
0.181
0.815
1.655
2.477
3.334
4.530
6.424
9.409
14.015
21.088
31.438
44.873
N
0.238
1.061
2.187
3.373
4.661
6.262
8.400
11.574
16.643
24.675
36.700
52.269
N
0.334
1.401
2.516
3.336
4.352
6.012
8.155
11.102
16.215
24.961
36.873
51.319
N
0.303
1.384
3.039
5.024
7.343
10.435
15.103
22.315
32.781
46.555
62.325
76.593
N
0.133
0.625
1.425
2.428
3.535
4.738
6.171
8.168
11.251
16.078
23.453
33.784
N
0.100
0.474
1.091
1.906
2.899
4.134
5.791
8.170
11.637
16.545
23.065
30.605
Appendix E. Tahoe stormwater particle size distribution data (continued).
136
Site
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Coon Street
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Mountain Drive
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Northwood Blvd
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Sample
Type
CI-AS
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-ASC
CI-AS
CI-MS
CI-AS
CI-AS
CI-MS
CI-AS
CI-AS
MD-ASC
MD-AS
MD-ASC
MD-ASC
MD-ASC
MD-ASC
MD-ASC
MD-ASC
NW-ASC
NW-ASC
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-ASC
NW-ASC
NW-ASC
NW-GS
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-MS
NW-MSR
NW-ASC
NW-ASC
NW-ASC
O3-AS
O3-AS
O3-AS
O3-AS
O3-ASC
O3-AS
O3-AS
O3-AS
O3-ASC
O3-AS
O3-AS
Sample
DateTime
12/6/03 9:14
12/6/03 16:36
12/6/03 19:22
2/16/04 14:56
2/18/04 5:34
2/25/04 10:05
3/9/04 11:32
5/10/04 10:10
6/9/04 7:11
9/20/04 10:56
9/20/04 11:04
9/20/04 11:10
9/20/04 11:14
9/20/04 11:30
9/20/04 11:44
9/20/04 12:17
3/15/03 2:41
7/31/03 23:05
8/21/03 11:33
12/6/03 3:28
12/6/03 6:17
12/6/03 16:24
12/24/03 12:56
2/16/04 12:34
10/29/07 15:23
11/10/07 22:46
1/4/08 7:26
1/4/08 7:51
1/4/08 7:52
1/4/08 13:32
1/4/08 17:36
3/13/08 2:00
5/24/08 4:06
5/26/08 13:39
5/26/08 15:10
10/3/08 22:12
10/3/08 22:20
10/3/08 22:21
10/31/08 15:18
11/1/08 11:47
11/1/08 12:05
11/1/08 12:07
1/21/09 20:37
1/22/09 3:02
1/22/09 4:18
1/22/09 4:19
1/22/09 8:54
1/22/09 17:05
1/23/09 14:15
3/23/03 4:10
4/16/03 10:40
4/17/03 14:25
4/20/03 14:46
4/21/03 9:09
4/24/03 14:19
4/26/03 0:06
4/27/03 16:58
4/28/03 4:39
5/9/03 21:24
6/23/03 17:10
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
72.855
82.118
87.725
91.433
94.061
95.827
96.913
97.641
98.621
99.375
99.595
99.981
100.000
18,213,624
73.765
86.772
93.260
96.496
98.346
99.349
99.716
99.766
99.894
99.997
100.000
100.000
100.000
9,378,263
67.579
81.016
88.365
92.210
94.624
96.238
97.171
97.822
98.679
99.584
99.991
100.000
100.000
12,668,636
80.070
89.276
94.254
97.010
98.738
99.644
99.976
100.000
100.000
100.000
100.000
100.000
100.000
27,799,122
83.654
91.380
95.626
97.750
98.972
99.578
99.815
99.965
100.000
100.000
100.000
100.000
100.000
5,476,191
78.096
89.450
95.042
97.701
99.213
99.896
99.999
100.000
100.000
100.000
100.000
100.000
100.000
8,724,931
73.572
83.817
90.200
94.499
97.662
99.298
99.965
100.000
100.000
100.000
100.000
100.000
100.000
1,159,233
62.024
70.045
75.720
79.835
83.704
86.886
88.570
91.185
96.041
99.542
100.000
100.000
100.000
13,941,893
53.691
65.101
76.053
83.894
88.352
93.122
95.675
96.530
98.567
99.984
100.000
100.000
100.000
13,499,052
99.264
99.286
99.684
99.999
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
104,313,904
65.848
71.822
78.162
84.953
88.469
92.010
93.045
96.066
99.262
99.995
100.000
100.000
100.000
73,472,462
52.141
57.595
63.761
69.807
73.602
80.060
83.375
86.231
88.393
90.718
93.224
96.192
100.000
42,398,443
55.735
61.178
68.092
74.614
79.348
84.245
89.296
92.152
95.699
99.352
100.000
100.000
100.000
46,045,192
71.324
75.820
80.808
84.600
86.655
87.409
88.533
90.437
94.663
99.253
100.000
100.000
100.000
30,255,030
44.679
49.145
54.669
59.289
64.556
73.640
78.724
83.017
89.250
96.517
100.000
100.000
100.000
16,612,179
61.514
68.126
76.181
83.484
88.498
91.235
92.730
94.077
97.228
99.864
100.000
100.000
100.000
17,775,345
65.990
75.985
83.484
88.831
92.833
95.554
97.019
97.897
98.922
99.664
99.991
100.000
100.000
9,848,300
43.336
53.329
63.010
72.667
82.745
89.518
92.991
95.524
98.033
99.465
99.612
99.883
100.000
26,165,566
31.462
42.149
52.950
63.481
73.821
81.920
86.693
89.768
92.854
95.221
96.683
98.534
100.000
19,057,571
43.250
58.519
72.337
82.293
89.205
93.496
95.518
96.797
98.487
99.820
99.998
100.000
100.000
828,545
42.288
55.510
69.358
79.937
89.765
95.059
99.313
99.996
100.000
100.000
100.000
100.000
100.000
326,099
39.696
53.064
66.728
76.843
87.990
95.503
99.513
100.000
100.000
100.000
100.000
100.000
100.000
205,857
48.837
62.950
76.743
86.527
91.493
93.819
98.538
100.000
100.000
100.000
100.000
100.000
100.000
379,638
66.662
80.434
89.052
93.694
97.168
99.329
99.977
100.000
100.000
100.000
100.000
100.000
100.000
869,442
64.947
72.813
79.953
86.021
90.750
95.033
98.155
99.836
100.000
100.000
100.000
100.000
100.000
15,822,721
59.487
65.892
72.026
76.690
80.892
85.622
90.530
94.732
97.872
99.976
100.000
100.000
100.000
2,036,963
89.653
93.285
97.077
99.610
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
40,974,785
91.160
94.884
97.622
98.650
99.568
99.991
100.000
100.000
100.000
100.000
100.000
100.000
100.000
51,158,451
91.022
95.229
98.333
99.462
99.996
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
58,087,984
92.808
96.833
98.402
99.817
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
26,562,717
76.565
83.367
88.217
92.477
95.888
99.320
99.999
100.000
100.000
100.000
100.000
100.000
100.000
16,107,311
72.851
75.628
77.187
78.913
80.991
89.042
99.057
100.000
100.000
100.000
100.000
100.000
100.000
9,647,480
73.613
78.456
83.798
88.172
94.320
98.577
99.953
100.000
100.000
100.000
100.000
100.000
100.000
11,456,278
79.222
83.800
88.556
92.589
95.887
99.431
99.999
100.000
100.000
100.000
100.000
100.000
100.000
16,924,985
71.148
77.048
83.152
87.871
92.934
97.098
99.770
100.000
100.000
100.000
100.000
100.000
100.000
24,933,526
61.366
69.919
77.974
84.946
89.938
93.132
96.408
97.137
98.659
99.989
100.000
100.000
100.000
7,341,232
79.800
85.193
90.179
95.090
96.610
99.639
100.000
100.000
100.000
100.000
100.000
100.000
100.000
15,197,084
76.766
80.683
88.150
91.769
95.931
98.264
99.956
100.000
100.000
100.000
100.000
100.000
100.000
17,069,751
75.446
82.148
89.378
94.254
96.447
98.544
99.969
100.000
100.000
100.000
100.000
100.000
100.000
11,784,114
54.583
63.544
73.055
79.761
85.799
89.609
92.948
94.467
97.629
99.976
100.000
100.000
100.000
5,309,785
56.822
66.320
75.813
81.949
87.474
91.812
94.300
96.352
98.550
99.984
100.000
100.000
100.000
15,708,493
65.985
73.481
80.692
86.908
92.223
95.526
99.043
99.863
100.000
100.000
100.000
100.000
100.000
16,794,426
94.610
97.171
99.281
99.997
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
44,797,725
83.073
87.833
91.945
95.185
97.655
99.642
100.000
100.000
100.000
100.000
100.000
100.000
100.000
62,122,491
79.864
85.811
89.563
93.097
95.958
98.711
99.969
100.000
100.000
100.000
100.000
100.000
100.000
121,583,764
73.940
81.384
86.493
90.142
93.546
96.582
98.614
99.545
99.995
100.000
100.000
100.000
100.000
115,301,332
83.159
86.912
91.400
94.233
96.832
99.689
100.000
100.000
100.000
100.000
100.000
100.000
100.000
38,246,769
93.974
96.231
98.681
99.353
99.915
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
13,983,298
88.272
91.842
94.944
96.957
98.762
99.981
100.000
100.000
100.000
100.000
100.000
100.000
100.000
22,021,122
72.332
79.726
85.319
89.398
92.300
94.173
95.332
96.390
98.050
99.633
99.999
100.000
100.000
5,324,583
87.512
93.663
96.545
98.061
99.040
99.566
99.947
100.000
100.000
100.000
100.000
100.000
100.000
1,992,024
84.570
92.283
95.754
97.525
98.805
99.447
99.788
99.990
100.000
100.000
100.000
100.000
100.000
6,575,692
58.214
70.169
79.491
86.848
92.015
94.820
96.434
97.292
98.450
99.775
99.999
100.000
100.000
3,688,088
54.638
66.584
76.350
83.942
89.664
93.575
95.841
97.212
98.620
99.592
99.764
99.988
100.000
9,942,777
59.632
73.081
83.058
89.980
94.819
97.113
98.660
99.271
99.536
99.770
99.951
100.000
100.000
4,620,540
68.335
80.953
88.613
93.475
97.214
99.188
99.803
99.961
100.000
100.000
100.000
100.000
100.000
4,218,910
64.878
76.263
83.828
89.634
94.871
98.456
99.979
100.000
100.000
100.000
100.000
100.000
100.000
1,490,540
86.506
92.613
95.989
98.102
99.310
99.801
99.995
100.000
100.000
100.000
100.000
100.000
100.000
4,210,568
46.372
59.438
70.906
80.276
87.537
92.530
95.432
97.237
99.159
99.985
100.000
100.000
100.000
2,608,489
38.136
45.370
52.777
59.856
65.959
70.495
73.309
76.023
79.874
84.356
89.475
96.040
100.000
5,476,879
Appendix E. Tahoe stormwater particle size distribution data (continued).
137
Site
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Reagan Beach
Reagan Beach
Reagan Beach
Reagan Beach
Reagan Beach
Reagan Beach
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Sample
Type
O3-ASC
O3-AS
O3-AS
O3-AS
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-AS
O3-AS
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-AS
O3-AS
O3-AS
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
RB-ASC
RB-ASC
RB-ASC
RB-ASC
RB-ASC
RB-ASC
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-ASC
42-ASC
42-ASC
42-ASC
42-ASC
42-ASC
42-AS
Sample
DateTime
7/23/03 15:25
8/21/03 11:29
8/21/03 15:34
8/21/03 18:51
12/5/03 7:47
12/5/03 8:37
12/5/03 12:10
12/7/03 0:10
12/16/03 14:12
12/17/03 13:13
12/18/03 13:42
1/7/04 21:54
1/7/04 22:55
1/8/04 10:39
1/9/04 10:17
1/10/04 13:02
1/11/04 12:35
1/12/04 12:07
1/27/04 12:43
1/27/04 16:37
1/27/04 17:12
2/8/04 13:40
2/14/04 13:05
2/16/04 9:38
2/16/04 12:17
2/16/04 15:35
2/17/04 12:19
2/18/04 0:00
2/18/04 15:06
2/19/04 12:23
2/20/04 12:38
2/21/04 16:37
2/25/04 10:49
2/25/04 13:48
2/25/04 16:13
2/26/04 0:24
3/10/04 9:22
3/11/04 10:36
2/8/07 19:49
2/9/07 2:01
2/10/07 9:38
2/11/07 12:35
5/25/08 15:48
11/1/08 7:12
4/12/03 16:16
4/14/03 14:00
4/14/03 15:02
4/15/03 12:16
4/15/03 13:10
4/17/03 14:56
5/9/03 17:50
5/9/03 20:46
5/9/03 21:48
6/23/03 12:20
8/21/03 5:40
8/21/03 10:46
8/26/03 3:40
8/26/03 6:50
8/26/03 8:20
11/9/03 14:52
Turbidity
(NTU)
849.0
506.0
560.0
811.0
220.0
217.0
47.4
154.0
66.3
35.8
33.2
186.0
127.0
92.2
40.5
31.7
42.3
25.6
265.0
278.0
352.0
201.0
41.2
111.0
264.0
59.4
45.7
67.8
222.0
117.0
42.2
87.4
59.6
98.6
74.0
42.9
59.1
29.8
302.0
158.0
279.0
270.0
215.0
112.0
41.0
24.0
21.0
14.0
33.0
94.0
53.0
19.0
20.0
272.0
30.5
16.1
9.8
16.5
17.3
31.0
TSS
(mg/L)
1,422.4
901.5
1,125.5
2,060.0
250.4
157.6
83.0
153.6
54.0
25.6
20.0
61.2
49.2
42.4
29.2
29.2
31.2
25.2
227.6
168.0
214.0
54.0
105.6
86.8
504.4
49.2
35.6
48.8
163.6
106.8
26.0
57.6
33.6
102.8
44.8
24.4
96.0
48.0
202.5
100.5
326.5
29.5
170.0
202.0
136.5
50.4
38.0
37.2
55.0
133.5
158.5
77.6
49.2
415.5
65.0
20.5
26.0
40.4
17.2
23.6
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
2.174
2.885
3.720
4.730
5.992
7.615
9.771
12.780
17.109
23.310
31.874
42.467
N
1.858
2.471
3.188
4.043
5.083
6.380
8.069
10.444
13.990
19.339
27.171
37.401
N
2.068
2.693
3.411
4.271
5.358
6.767
8.627
11.154
14.680
19.640
26.537
35.463
N
2.670
3.447
4.330
5.395
6.761
8.553
10.924
14.132
18.561
24.677
32.836
42.586
N
1.941
2.987
4.328
6.008
8.113
10.821
14.456
19.566
26.869
37.056
50.307
64.626
N
2.098
3.034
4.207
5.666
7.493
9.834
12.956
17.355
23.789
33.228
46.692
63.575
N
1.459
2.534
3.906
5.558
7.558
10.109
13.524
18.227
24.722
33.535
45.091
58.989
N
1.965
2.947
4.233
5.912
8.119
11.002
14.739
19.609
26.030
34.509
45.429
58.148
N
2.223
3.653
5.440
7.592
10.250
13.731
18.468
24.908
33.294
43.492
54.731
65.573
N
1.690
3.085
4.834
6.852
9.206
12.220
16.432
22.505
30.947
41.803
54.183
65.994
N
1.604
3.068
4.935
7.102
9.630
12.827
17.183
23.318
31.772
42.735
55.455
68.051
N
3.385
6.253
9.789
13.713
18.027
23.221
30.098
39.478
51.475
64.972
77.212
85.566
N
3.814
7.118
11.210
15.807
20.940
27.003
34.380
43.248
53.376
64.121
74.184
81.984
N
2.753
5.019
8.062
12.120
17.768
25.573
35.567
47.004
58.745
69.784
79.095
85.713
N
1.978
3.626
5.819
8.711
12.708
18.210
25.257
33.478
42.432
51.923
61.569
70.314
N
2.210
3.947
6.311
9.536
14.096
20.408
28.496
37.910
48.006
58.238
67.800
75.443
N
2.046
3.377
5.135
7.428
10.461
14.471
19.665
26.238
34.330
43.891
54.299
64.132
N
1.632
2.665
3.997
5.661
7.741
10.382
13.814
18.437
24.802
33.461
44.591
57.017
N
2.717
4.138
5.878
7.959
10.496
13.716
17.968
23.753
31.589
41.775
53.922
66.319
N
2.303
3.456
4.845
6.470
8.413
10.893
14.296
19.203
26.240
35.845
47.913
61.118
N
4.590
7.528
11.105
15.382
20.693
27.427
35.797
45.831
57.063
68.461
78.416
86.039
N
2.657
4.743
7.521
11.087
15.704
21.720
29.401
38.836
49.813
61.762
73.447
83.236
N
1.891
2.692
3.692
4.923
6.426
8.281
10.677
14.029
19.017
26.502
37.385
51.359
N
2.255
3.783
5.733
8.171
11.329
15.576
21.292
28.771
38.080
48.963
60.487
70.870
N
2.856
3.959
5.354
7.182
9.639
12.914
17.179
22.638
29.478
37.744
47.008
56.052
N
1.545
2.440
3.579
4.981
6.721
8.956
11.963
16.196
22.268
30.865
42.587
56.918
N
1.344
2.294
3.542
5.122
7.132
9.752
13.239
17.977
24.461
33.210
44.606
58.172
N
1.672
2.676
3.969
5.582
7.592
10.151
13.518
18.103
24.454
33.158
44.694
58.619
N
3.607
5.848
8.737
12.395
17.045
22.883
29.983
38.380
48.066
58.889
70.186
80.721
N
2.105
3.415
5.042
6.966
9.255
12.132
16.010
21.526
29.383
40.058
53.294
67.100
N
0.745
1.514
2.291
2.993
3.867
5.086
6.604
8.817
12.844
20.396
33.079
50.297
N
1.580
2.439
3.489
4.710
6.127
7.900
10.401
14.309
20.536
30.009
43.311
59.143
N
1.618
2.349
3.230
4.262
5.481
7.009
9.099
12.194
16.892
23.837
33.604
45.979
N
2.095
3.117
4.408
6.044
8.176
11.018
14.851
20.043
26.986
35.939
46.676
57.838
N
1.928
2.948
4.257
5.913
8.025
10.767
14.402
19.343
26.159
35.478
47.695
61.720
N
1.325
2.193
3.249
4.448
5.801
7.444
9.674
13.021
18.208
26.004
36.968
50.358
N
1.923
2.588
3.351
4.223
5.250
6.570
8.486
11.556
16.558
24.388
35.937
50.866
N
1.256
2.015
2.858
3.748
4.796
6.159
8.054
11.033
16.090
24.658
38.254
56.479
N
2.800
4.428
6.472
8.891
11.608
14.661
18.368
23.384
30.407
39.911
52.096
65.631
N
2.146
3.304
4.730
6.376
8.173
10.129
12.417
15.405
19.526
25.223
33.114
43.448
N
1.777
2.740
3.971
5.444
7.075
8.814
10.781
13.364
17.133
22.735
31.020
42.371
N
5.297
8.445
12.565
17.704
23.585
29.727
35.920
42.467
49.634
57.349
66.168
75.929
Y
2.266
3.688
5.590
7.990
10.804
13.928
17.430
21.675
27.190
34.453
43.818
54.398
Y
2.684
3.937
5.593
7.983
11.555
16.586
22.956
30.071
37.297
44.641
53.213
63.676
N
0.081
0.378
0.864
1.496
2.259
3.202
4.432
6.090
8.318
11.300
15.310
20.669
N
0.288
1.207
2.170
2.889
3.773
5.183
7.111
9.898
14.138
20.970
31.656
46.363
N
0.403
1.640
2.800
3.528
4.597
6.588
9.301
12.986
18.426
26.773
37.991
51.876
N
0.907
1.451
2.116
2.915
3.931
5.275
7.050
9.389
12.589
17.295
24.518
34.734
N
0.202
0.933
2.077
3.484
5.100
7.072
9.740
13.682
19.681
28.636
41.348
57.082
N
0.177
0.821
1.850
3.177
4.848
7.127
10.466
15.407
22.382
31.499
42.131
52.278
N
0.119
0.566
1.336
2.403
3.756
5.442
7.638
10.744
15.359
22.139
31.585
43.036
N
0.273
1.147
2.123
3.016
4.291
6.308
9.020
12.861
18.618
26.981
37.745
50.147
N
0.150
0.682
1.479
2.411
3.453
4.728
6.420
8.782
12.210
17.371
25.314
36.808
N
0.107
0.502
1.147
1.998
3.070
4.490
6.498
9.418
13.583
19.270
26.531
34.689
N
0.467
0.688
0.932
1.207
1.589
2.253
3.472
5.603
9.018
14.075
21.113
30.207
N
0.265
0.425
0.627
0.870
1.167
1.554
2.106
2.977
4.430
6.875
11.035
18.008
N
0.427
0.693
1.011
1.385
1.877
2.635
3.916
6.093
9.588
14.778
21.873
30.482
N
0.359
0.602
0.861
1.136
1.520
2.110
2.980
4.282
6.250
9.177
13.318
18.831
N
0.244
0.575
0.869
1.070
1.385
1.955
2.776
4.052
6.049
9.129
13.455
19.211
N
0.227
0.356
0.504
0.674
0.904
1.279
1.940
3.069
4.837
7.366
10.746
15.220
Appendix E. Tahoe stormwater particle size distribution data (continued).
138
Site
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Osgood Ave
Reagan Beach
Reagan Beach
Reagan Beach
Reagan Beach
Reagan Beach
Reagan Beach
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Sample
Type
O3-ASC
O3-AS
O3-AS
O3-AS
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-AS
O3-AS
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-AS
O3-AS
O3-AS
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
O3-ASC
RB-ASC
RB-ASC
RB-ASC
RB-ASC
RB-ASC
RB-ASC
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-AS
42-ASC
42-ASC
42-ASC
42-ASC
42-ASC
42-ASC
42-AS
Sample
DateTime
7/23/03 15:25
8/21/03 11:29
8/21/03 15:34
8/21/03 18:51
12/5/03 7:47
12/5/03 8:37
12/5/03 12:10
12/7/03 0:10
12/16/03 14:12
12/17/03 13:13
12/18/03 13:42
1/7/04 21:54
1/7/04 22:55
1/8/04 10:39
1/9/04 10:17
1/10/04 13:02
1/11/04 12:35
1/12/04 12:07
1/27/04 12:43
1/27/04 16:37
1/27/04 17:12
2/8/04 13:40
2/14/04 13:05
2/16/04 9:38
2/16/04 12:17
2/16/04 15:35
2/17/04 12:19
2/18/04 0:00
2/18/04 15:06
2/19/04 12:23
2/20/04 12:38
2/21/04 16:37
2/25/04 10:49
2/25/04 13:48
2/25/04 16:13
2/26/04 0:24
3/10/04 9:22
3/11/04 10:36
2/8/07 19:49
2/9/07 2:01
2/10/07 9:38
2/11/07 12:35
5/25/08 15:48
11/1/08 7:12
4/12/03 16:16
4/14/03 14:00
4/14/03 15:02
4/15/03 12:16
4/15/03 13:10
4/17/03 14:56
5/9/03 17:50
5/9/03 20:46
5/9/03 21:48
6/23/03 12:20
8/21/03 5:40
8/21/03 10:46
8/26/03 3:40
8/26/03 6:50
8/26/03 8:20
11/9/03 14:52
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
53.489
63.454
72.637
80.627
86.539
90.557
92.884
94.439
96.122
97.383
97.940
99.038
100.000
64,788,084
48.572
58.863
67.444
74.625
80.425
84.843
87.933
90.376
93.092
95.345
96.844
98.742
100.000
35,116,982
45.766
56.217
65.471
73.278
79.567
84.407
87.875
90.603
93.559
95.842
97.058
98.783
100.000
44,594,951
52.836
62.871
71.894
79.265
84.543
88.094
90.369
92.169
94.408
96.212
97.209
98.839
100.000
101,291,222
76.360
84.185
89.058
92.363
94.628
96.237
97.316
97.732
98.315
99.454
99.998
100.000
100.000
17,559,174
79.789
90.590
95.547
97.705
98.945
99.658
99.960
100.000
100.000
100.000
100.000
100.000
100.000
9,774,049
73.233
84.626
91.384
95.185
97.819
99.257
99.932
100.000
100.000
100.000
100.000
100.000
100.000
5,903,255
70.712
80.893
87.267
91.050
93.701
95.399
96.332
97.062
98.158
99.031
99.710
100.000
100.000
10,332,546
74.982
82.602
88.429
92.933
96.447
98.343
99.529
99.984
100.000
100.000
100.000
100.000
100.000
5,073,174
75.278
82.114
87.368
91.740
96.278
99.080
99.976
100.000
100.000
100.000
100.000
100.000
100.000
2,320,832
78.702
86.177
91.207
94.914
98.377
99.956
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,916,780
90.203
93.004
94.913
96.252
98.033
99.422
99.970
100.000
100.000
100.000
100.000
100.000
100.000
11,156,281
86.859
90.050
92.303
94.654
97.057
99.097
99.934
100.000
100.000
100.000
100.000
100.000
100.000
10,356,264
89.523
92.268
94.373
96.329
98.194
99.334
99.938
100.000
100.000
100.000
100.000
100.000
100.000
6,729,927
77.706
84.692
90.082
94.322
98.288
99.952
100.000
100.000
100.000
100.000
100.000
100.000
100.000
3,346,440
80.784
85.104
89.012
93.295
97.370
99.563
99.996
100.000
100.000
100.000
100.000
100.000
100.000
3,601,852
72.386
79.554
85.172
90.231
94.893
98.298
99.842
100.000
100.000
100.000
100.000
100.000
100.000
2,856,778
68.745
78.706
85.980
91.459
95.979
98.765
99.926
100.000
100.000
100.000
100.000
100.000
100.000
1,744,640
77.254
86.061
91.964
95.533
97.684
98.787
99.228
99.358
99.744
99.996
100.000
100.000
100.000
20,972,949
73.720
84.500
91.797
95.893
98.229
99.363
99.708
99.744
99.893
99.998
100.000
100.000
100.000
12,429,047
90.993
94.225
96.197
97.583
98.566
99.049
99.333
99.424
99.727
99.996
100.000
100.000
100.000
40,628,179
90.123
94.596
96.794
97.911
98.931
99.712
99.995
100.000
100.000
100.000
100.000
100.000
100.000
7,725,030
65.793
77.553
84.998
89.620
93.167
95.847
97.351
98.186
99.038
99.986
100.000
100.000
100.000
5,561,419
78.748
84.415
88.224
91.129
93.714
95.533
96.758
97.692
98.950
99.978
100.000
100.000
100.000
8,901,125
63.883
70.591
75.862
79.935
83.303
86.097
88.140
89.846
92.043
94.282
95.897
98.425
100.000
37,640,149
71.413
83.118
90.138
93.737
96.361
97.850
98.658
99.178
99.547
99.993
100.000
100.000
100.000
2,929,436
72.042
83.614
90.398
93.892
96.797
98.661
99.782
100.000
100.000
100.000
100.000
100.000
100.000
2,300,419
72.877
84.525
91.321
94.706
97.067
98.336
99.106
99.862
100.000
100.000
100.000
100.000
100.000
3,282,773
89.177
94.835
97.389
98.516
99.267
99.637
99.894
99.991
100.000
100.000
100.000
100.000
100.000
24,597,602
78.854
87.549
92.954
96.069
98.163
99.334
99.744
99.932
100.000
100.000
100.000
100.000
100.000
9,101,043
68.341
82.643
90.743
93.980
96.378
97.464
99.123
99.998
100.000
100.000
100.000
100.000
100.000
1,156,179
74.038
85.113
91.538
95.105
97.484
98.735
99.131
99.443
99.744
99.997
100.000
100.000
100.000
3,187,856
59.667
72.940
83.806
91.641
96.812
99.169
99.784
99.959
100.000
100.000
100.000
100.000
100.000
1,575,140
67.710
75.516
81.043
85.038
88.169
90.455
92.000
93.430
95.390
97.522
99.400
100.000
100.000
7,044,032
74.785
84.877
91.206
95.087
97.745
99.106
99.709
99.966
100.000
100.000
100.000
100.000
100.000
3,075,318
63.872
75.341
83.863
90.357
95.054
98.126
99.768
99.998
100.000
100.000
100.000
100.000
100.000
1,350,104
66.337
78.730
86.507
91.196
94.665
96.880
97.911
98.366
99.122
99.882
100.000
100.000
100.000
4,004,171
74.560
86.852
92.918
96.270
98.331
99.520
99.974
100.000
100.000
100.000
100.000
100.000
100.000
2,225,453
76.824
84.203
87.541
90.128
93.646
97.055
99.185
99.989
100.000
100.000
100.000
100.000
100.000
21,322,980
55.465
68.892
79.696
86.404
90.452
94.481
97.079
97.858
99.355
99.996
100.000
100.000
100.000
7,407,290
55.197
67.201
75.742
80.803
85.489
91.204
94.616
95.670
97.893
99.834
100.000
100.000
100.000
20,459,692
82.245
88.050
91.227
92.552
95.277
97.255
99.589
99.958
100.000
100.000
100.000
100.000
100.000
6,146,508
63.905
71.488
78.318
83.678
88.639
93.381
94.998
96.536
98.885
99.989
100.000
100.000
100.000
16,287,772
72.130
79.022
85.761
90.296
94.730
96.873
99.357
99.969
100.000
100.000
100.000
100.000
100.000
18,079,839
28.131
39.283
53.531
67.648
79.155
87.359
91.650
93.749
95.989
98.518
99.758
100.000
100.000
3,063,696
62.537
77.332
87.337
93.698
96.740
98.456
99.940
100.000
100.000
100.000
100.000
100.000
100.000
2,658,092
66.652
80.003
89.305
94.221
98.096
99.859
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,583,041
48.387
63.600
76.127
86.057
92.450
98.299
99.988
100.000
100.000
100.000
100.000
100.000
100.000
1,319,607
72.620
84.688
91.977
95.672
97.741
99.164
99.870
100.000
100.000
100.000
100.000
100.000
100.000
2,922,889
59.986
65.280
68.821
71.421
73.468
75.252
76.754
78.556
82.093
87.591
94.971
99.870
100.000
6,485,804
54.430
64.284
71.817
77.524
81.924
84.892
86.774
88.475
91.049
94.093
98.522
100.000
100.000
5,624,540
62.783
75.490
85.320
91.752
96.430
98.753
99.730
100.000
100.000
100.000
100.000
100.000
100.000
4,139,224
51.633
67.793
80.597
88.420
93.389
96.479
99.173
99.996
100.000
100.000
100.000
100.000
100.000
1,837,173
42.886
50.925
59.450
70.408
81.379
88.017
90.270
91.563
93.367
95.131
96.646
99.074
100.000
12,550,675
41.222
53.691
65.986
76.683
85.463
92.010
95.618
97.590
99.162
99.956
100.000
100.000
100.000
919,619
28.900
43.705
59.402
72.857
83.532
91.259
95.361
97.505
99.322
99.990
100.000
100.000
100.000
217,375
40.166
51.498
63.410
74.672
84.882
92.276
95.895
97.501
99.013
99.967
100.000
100.000
100.000
453,784
26.019
35.535
46.815
59.162
71.513
82.315
89.911
95.091
98.385
99.946
100.000
100.000
100.000
602,538
26.497
36.640
48.945
62.183
75.223
86.665
94.115
98.844
99.828
100.000
100.000
100.000
100.000
312,061
21.296
28.823
36.862
45.236
54.550
65.219
75.046
82.838
88.891
92.561
94.718
98.444
100.000
196,231
Appendix E. Tahoe stormwater particle size distribution data (continued).
139
Site
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Sample
Type
42-AS
42-AS
42-AS
42-ASC
42-ASC
42-ASC
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-ASC
43-ASC
43-AS
43-AS
43-AS
43-ASC
43-ASC
43-ASC
43-ASC
43-ASC
SQ-ASC
SQ-ASC
SQ-ASC
SQ-ASC
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-ASC
SQ-ASC
SQ-ASC
SQ-ASC
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-ASC
SY-AS
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
Sample
DateTime
11/9/03 15:04
11/9/03 15:16
11/9/03 15:28
12/6/03 8:38
12/6/03 16:46
3/6/04 12:17
3/15/03 6:26
3/15/03 7:28
3/15/03 8:30
3/15/03 11:10
3/15/03 12:12
3/26/03 9:08
4/14/03 14:00
4/14/03 15:02
4/14/03 16:04
4/17/03 11:50
4/17/03 13:54
4/17/03 14:56
4/17/03 15:58
5/9/03 20:46
5/9/03 21:48
6/23/03 12:20
8/21/03 5:40
12/24/03 11:22
12/24/03 12:23
12/24/03 13:24
2/16/04 11:51
3/8/04 13:12
3/9/04 12:50
3/10/04 13:10
3/11/04 14:11
3/14/03 9:01
3/22/03 22:31
3/26/03 6:26
4/24/03 10:42
6/23/03 12:12
6/23/03 12:39
6/23/03 14:31
6/23/03 15:05
6/23/03 15:20
6/23/03 15:50
8/21/03 11:11
12/6/03 4:06
12/6/03 9:44
12/6/03 11:46
2/16/04 12:04
2/16/04 12:23
2/16/04 13:32
2/16/04 14:44
2/16/04 18:07
2/25/04 22:53
2/16/03 15:27
3/13/03 15:11
3/13/03 21:24
3/15/03 1:22
3/23/03 3:06
3/26/03 6:17
4/5/03 14:07
4/7/03 11:29
4/12/03 4:29
Turbidity
(NTU)
32.2
34.0
33.0
49.4
43.5
47.9
14.0
30.0
98.0
27.0
100.0
28.0
16.0
13.0
10.0
5.0
5.0
5.0
6.0
16.0
12.0
330.0
67.2
122.0
50.7
44.6
237.0
15.5
20.0
16.1
54.0
170.0
66.0
72.0
100.0
1,281.0
610.0
1,712.0
340.0
295.0
255.0
656.0
135.0
81.8
73.8
92.6
112.0
39.9
44.1
19.2
3.5
54.0
33.4
74.6
96.9
28.4
51.5
161.0
23.7
137.0
TSS
(mg/L)
58.4
18.0
25.6
47.0
36.8
41.2
21.6
64.4
697.5
111.2
661.2
65.2
26.4
20.4
13.6
4.8
9.6
14.8
6.8
28.8
18.4
635.5
101.0
90.4
49.6
28.0
191.6
46.4
47.2
13.2
12.0
404.0
207.2
168.0
183.5
1,215.0
530.5
1,627.5
368.5
414.0
296.0
991.0
182.0
70.0
68.8
127.2
107.2
83.2
56.0
26.8
2.4
66.4
43.6
96.4
156.0
30.0
55.2
1,288.0
17.2
155.2
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
0.259
0.362
0.478
0.617
0.814
1.142
1.717
2.696
4.252
6.560
9.829
14.359
N
0.420
0.527
0.627
0.729
0.880
1.180
1.783
2.886
4.656
7.180
10.486
14.692
N
0.319
0.480
0.647
0.817
1.042
1.459
2.296
3.836
6.308
9.832
14.504
20.535
N
0.847
1.349
2.006
2.837
3.864
5.134
6.740
8.872
11.847
16.113
22.321
31.005
N
0.870
1.322
1.907
2.646
3.570
4.737
6.246
8.275
11.104
15.115
20.878
29.032
N
1.200
1.804
2.569
3.514
4.670
6.095
7.913
10.397
13.997
19.287
26.918
37.040
N
0.555
0.942
1.446
2.081
2.893
3.961
5.384
7.301
9.944
13.720
19.358
27.636
N
0.160
0.716
1.454
2.195
2.989
4.002
5.330
7.137
9.831
14.179
21.234
31.791
N
1.179
1.618
2.160
2.841
3.708
4.821
6.278
8.268
11.091
15.128
20.775
28.007
N
0.104
0.484
1.087
1.826
2.635
3.552
4.742
6.517
9.278
13.436
19.359
27.027
N
0.195
0.895
1.966
3.233
4.618
6.259
8.484
11.812
16.903
24.454
34.999
47.788
N
0.190
0.887
2.014
3.481
5.287
7.558
10.496
14.365
19.530
26.509
35.967
47.967
N
1.488
2.500
3.813
5.438
7.427
9.895
13.047
17.284
23.214
31.550
42.869
56.577
N
1.252
2.214
3.479
5.057
7.001
9.405
12.420
16.389
21.921
29.781
40.635
54.128
N
0.266
1.086
1.870
2.373
3.028
4.085
5.384
7.194
9.857
14.205
21.379
32.255
N
0.101
0.461
0.934
1.391
1.857
2.534
3.711
5.529
8.022
11.963
17.370
24.275
N
0.193
0.797
1.386
1.766
2.288
3.208
4.233
5.491
7.530
10.590
15.950
24.578
N
0.128
0.577
1.239
1.992
2.810
3.785
5.016
6.623
8.888
12.375
17.955
26.566
N
0.021
0.097
0.207
0.334
0.454
0.516
0.575
0.904
1.689
2.908
6.029
15.658
N
0.232
1.004
1.897
2.666
3.549
4.812
6.417
8.527
11.767
17.254
26.334
39.906
N
0.217
0.906
1.616
2.113
2.701
3.651
4.867
6.467
8.954
13.358
21.183
33.842
N
0.207
0.953
2.115
3.546
5.223
7.321
10.117
13.917
18.975
25.415
32.972
40.677
N
0.659
1.034
1.532
2.175
3.008
4.122
5.696
8.032
11.487
16.323
22.531
29.683
N
1.136
1.602
2.184
2.898
3.759
4.786
6.035
7.663
9.992
13.543
19.168
27.723
N
1.342
2.005
2.866
3.954
5.292
6.915
8.916
11.547
15.284
20.815
29.066
40.513
N
1.021
1.662
2.480
3.472
4.649
6.061
7.840
10.293
13.972
19.667
28.348
40.117
N
2.148
3.097
4.320
5.887
7.871
10.337
13.397
17.315
22.564
29.731
39.248
50.447
N
0.929
1.722
2.591
3.498
4.672
6.260
8.314
11.133
15.091
20.869
28.928
39.521
N
1.195
1.952
2.911
4.105
5.635
7.636
10.277
13.866
18.930
26.137
36.121
48.427
N
1.430
2.377
3.543
4.912
6.541
8.589
11.332
15.245
20.936
29.051
40.152
53.953
N
0.912
1.680
2.511
3.390
4.585
6.227
8.284
11.014
14.917
21.050
30.582
43.759
N
0.536
2.423
5.222
8.414
11.866
15.985
21.423
28.875
38.818
51.215
64.799
76.639
N
2.357
3.249
4.332
5.640
7.222
9.164
11.664
15.136
20.186
27.469
37.424
49.313
N
3.352
4.781
6.590
8.884
11.798
15.495
20.215
26.382
34.552
45.175
58.049
71.173
N
0.365
1.673
3.688
6.107
8.813
11.999
16.046
21.466
28.816
38.543
50.539
63.156
N
0.260
1.197
2.654
4.428
6.458
8.918
12.105
16.289
21.635
28.221
35.809
43.349
N
0.329
1.499
3.289
5.473
8.095
11.491
16.031
21.940
29.225
37.777
47.185
56.253
N
0.225
1.034
2.288
3.788
5.437
7.379
9.928
13.423
18.063
23.870
30.598
37.811
N
0.259
1.186
2.623
4.379
6.433
9.017
12.505
17.296
23.678
31.763
41.264
51.046
N
0.196
0.908
2.033
3.429
5.048
7.029
9.658
13.296
18.284
24.889
33.205
42.711
N
0.243
1.117
2.484
4.173
6.162
8.677
12.130
17.044
23.903
32.961
43.837
54.822
N
3.103
4.137
5.367
6.860
8.704
11.001
13.918
17.803
23.201
30.748
40.885
52.812
N
1.948
2.839
4.004
5.520
7.457
9.857
12.766
16.338
20.910
26.965
34.977
44.722
N
1.890
2.975
4.401
6.212
8.458
11.186
14.473
18.519
23.707
30.578
39.795
51.519
N
2.213
3.357
4.842
6.720
9.042
11.873
15.329
19.667
25.327
32.874
42.905
55.354
N
1.396
2.019
2.808
3.805
5.061
6.626
8.590
11.214
14.944
20.301
27.646
36.456
N
2.604
3.712
5.131
6.947
9.268
12.235
16.081
21.229
28.249
37.654
49.435
61.897
N
0.707
0.976
1.311
1.734
2.271
2.951
3.814
4.938
6.460
8.570
11.496
15.270
N
0.456
0.622
0.825
1.081
1.414
1.849
2.405
3.121
4.063
5.341
7.103
9.394
N
1.138
1.614
2.203
2.947
3.903
5.114
6.608
8.488
10.998
14.550
19.765
27.184
N
48.934
59.915
63.943
64.162
82.606
99.680
100.000
100.000
100.000
100.000
100.000
100.000
N
1.450
2.292
3.276
4.345
5.517
6.989
9.185
12.793
18.620
27.373
39.331
53.267
N
0.125
0.568
1.219
1.920
2.574
3.260
4.283
6.297
10.365
17.897
30.488
47.714
N
1.280
2.096
3.067
4.128
5.282
6.698
8.763
12.095
17.381
25.133
35.355
46.802
N
0.194
0.897
1.995
3.332
4.826
6.566
8.789
11.901
16.449
23.040
32.200
43.604
N
0.081
0.378
0.860
1.465
2.138
2.879
3.768
4.991
6.858
9.813
14.503
21.533
N
0.170
0.778
1.713
2.824
4.052
5.517
7.462
10.203
14.091
19.554
27.074
36.607
N
0.267
1.223
2.685
4.413
6.300
8.511
11.426
15.582
21.523
29.587
39.612
50.495
N
0.492
2.156
4.360
6.756
9.783
13.987
19.596
27.107
37.053
49.726
63.926
77.229
N
1.840
3.055
4.604
6.504
8.859
11.890
15.947
21.548
29.198
39.083
50.563
61.810
Appendix E. Tahoe stormwater particle size distribution data (continued).
140
Site
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill CI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Round Hill VI
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
Sequoia Ave
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Sample
Type
42-AS
42-AS
42-AS
42-ASC
42-ASC
42-ASC
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-AS
43-ASC
43-ASC
43-AS
43-AS
43-AS
43-ASC
43-ASC
43-ASC
43-ASC
43-ASC
SQ-ASC
SQ-ASC
SQ-ASC
SQ-ASC
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-ASC
SQ-ASC
SQ-ASC
SQ-ASC
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-AS
SQ-ASC
SY-AS
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
Sample
DateTime
11/9/03 15:04
11/9/03 15:16
11/9/03 15:28
12/6/03 8:38
12/6/03 16:46
3/6/04 12:17
3/15/03 6:26
3/15/03 7:28
3/15/03 8:30
3/15/03 11:10
3/15/03 12:12
3/26/03 9:08
4/14/03 14:00
4/14/03 15:02
4/14/03 16:04
4/17/03 11:50
4/17/03 13:54
4/17/03 14:56
4/17/03 15:58
5/9/03 20:46
5/9/03 21:48
6/23/03 12:20
8/21/03 5:40
12/24/03 11:22
12/24/03 12:23
12/24/03 13:24
2/16/04 11:51
3/8/04 13:12
3/9/04 12:50
3/10/04 13:10
3/11/04 14:11
3/14/03 9:01
3/22/03 22:31
3/26/03 6:26
4/24/03 10:42
6/23/03 12:12
6/23/03 12:39
6/23/03 14:31
6/23/03 15:05
6/23/03 15:20
6/23/03 15:50
8/21/03 11:11
12/6/03 4:06
12/6/03 9:44
12/6/03 11:46
2/16/04 12:04
2/16/04 12:23
2/16/04 13:32
2/16/04 14:44
2/16/04 18:07
2/25/04 22:53
2/16/03 15:27
3/13/03 15:11
3/13/03 21:24
3/15/03 1:22
3/23/03 3:06
3/26/03 6:17
4/5/03 14:07
4/7/03 11:29
4/12/03 4:29
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
20.577
28.438
36.985
45.820
55.502
66.313
76.218
83.899
90.013
94.081
96.398
99.061
100.000
391,397
20.160
26.864
34.261
42.557
52.675
65.180
78.830
90.701
98.078
99.973
100.000
100.000
100.000
115,335
27.941
36.138
44.616
53.521
63.659
74.977
85.309
93.023
98.094
99.933
100.000
100.000
100.000
253,383
41.987
54.173
65.319
74.577
82.560
88.550
91.983
94.103
96.331
98.268
99.608
100.000
100.000
1,591,862
40.035
53.708
67.864
79.849
88.787
94.253
96.385
97.299
98.414
99.312
99.809
100.000
100.000
1,119,536
48.976
61.480
72.375
82.024
91.188
97.586
99.845
100.000
100.000
100.000
100.000
100.000
100.000
1,645,614
38.682
51.640
64.242
75.158
83.964
90.502
94.333
96.712
98.806
99.936
100.000
100.000
100.000
565,943
45.799
61.940
76.339
86.644
93.298
97.003
98.632
99.137
99.701
99.996
100.000
100.000
100.000
2,313,377
36.258
44.940
53.203
60.885
68.013
74.058
78.237
81.211
84.494
87.517
90.508
95.446
100.000
20,197,434
36.162
46.617
57.284
67.938
78.721
88.068
94.134
97.156
99.202
99.985
100.000
100.000
100.000
3,067,353
60.478
71.152
79.250
85.341
89.597
92.267
93.728
94.701
95.872
96.929
97.843
99.377
100.000
32,839,376
61.283
73.935
83.293
89.340
93.607
96.624
98.491
99.312
99.657
99.995
100.000
100.000
100.000
3,417,983
70.767
83.171
90.920
94.831
96.890
98.673
99.903
100.000
100.000
100.000
100.000
100.000
100.000
1,787,826
68.633
81.878
90.796
95.304
97.820
99.301
99.898
100.000
100.000
100.000
100.000
100.000
100.000
1,323,512
46.703
63.066
77.675
87.318
94.244
98.709
99.999
100.000
100.000
100.000
100.000
100.000
100.000
611,054
35.427
51.168
70.887
86.233
97.541
99.287
100.000
100.000
100.000
100.000
100.000
100.000
100.000
111,028
37.279
53.562
70.826
84.348
94.052
98.015
99.822
100.000
100.000
100.000
100.000
100.000
100.000
321,012
39.168
55.118
71.258
84.460
92.447
97.033
99.737
100.000
100.000
100.000
100.000
100.000
100.000
458,644
31.728
52.709
69.576
82.863
96.722
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
34,854
56.337
72.239
83.624
90.860
95.933
98.941
99.793
99.999
100.000
100.000
100.000
100.000
100.000
1,335,799
51.242
69.804
84.004
92.298
97.308
99.258
99.995
100.000
100.000
100.000
100.000
100.000
100.000
716,038
47.878
54.756
62.128
71.371
80.166
84.992
87.201
89.037
91.280
93.204
94.936
98.029
100.000
34,421,204
37.644
46.291
54.585
62.707
71.117
79.004
84.736
89.084
93.167
95.957
97.915
99.926
100.000
2,616,902
39.040
51.333
61.885
69.690
75.215
79.063
81.585
83.996
87.559
92.288
97.441
99.946
100.000
2,758,829
54.081
67.301
77.614
84.526
89.273
92.757
94.850
97.143
98.534
99.583
99.999
100.000
100.000
2,208,675
53.091
64.402
72.367
77.775
82.781
86.727
89.280
91.847
93.715
97.350
99.989
100.000
100.000
1,183,668
61.912
73.152
83.116
90.907
95.878
98.310
99.062
99.266
99.693
99.992
100.000
100.000
100.000
12,240,612
51.865
64.700
75.409
84.285
93.304
98.708
99.983
100.000
100.000
100.000
100.000
100.000
100.000
2,241,385
61.495
74.177
83.775
90.848
96.397
99.569
99.999
100.000
100.000
100.000
100.000
100.000
100.000
2,385,331
68.807
82.054
90.813
95.581
98.656
99.790
99.998
100.000
100.000
100.000
100.000
100.000
100.000
808,976
59.124
74.169
85.190
91.821
97.504
99.630
99.997
100.000
100.000
100.000
100.000
100.000
100.000
562,131
84.947
90.564
93.805
95.763
97.135
97.946
98.468
98.679
99.263
99.634
99.851
100.000
100.000
52,787,531
61.341
72.064
80.741
87.638
92.457
95.373
97.097
98.101
99.303
99.984
100.000
100.000
100.000
11,945,242
81.754
88.935
93.290
95.896
97.314
98.023
98.456
98.652
99.215
99.830
99.999
100.000
100.000
16,018,967
74.333
83.344
89.534
93.598
96.332
97.773
98.400
98.666
99.239
99.898
99.984
100.000
100.000
17,123,429
49.853
55.514
59.997
63.806
67.819
70.837
72.915
74.932
77.580
80.742
85.709
94.389
100.000
82,035,691
64.000
70.987
76.286
80.683
85.222
87.950
89.465
90.762
92.373
94.064
95.617
98.695
100.000
44,724,680
44.654
49.983
53.968
57.794
65.241
69.596
69.794
71.740
85.827
95.048
97.752
98.146
100.000
94,074,278
59.689
66.504
70.983
74.880
79.565
82.387
83.979
85.768
88.059
90.587
93.132
97.480
100.000
24,728,468
52.245
60.400
65.863
70.690
76.739
80.296
81.951
83.817
86.493
89.623
92.851
97.443
100.000
21,562,935
64.031
70.820
75.088
78.424
81.929
84.041
85.127
86.258
88.041
89.979
92.506
97.956
100.000
18,888,568
64.708
75.384
83.707
89.975
94.415
96.730
97.669
98.196
99.040
99.584
99.667
99.908
100.000
65,832,049
55.162
65.125
73.137
79.456
84.484
88.039
90.440
92.552
94.868
97.199
99.073
99.976
100.000
11,013,359
64.845
77.644
86.542
91.237
93.927
95.534
96.417
96.892
97.807
99.402
99.998
100.000
100.000
5,130,208
68.905
81.133
89.300
93.785
96.440
97.931
98.714
99.261
99.595
99.932
100.000
100.000
100.000
5,283,499
45.527
53.584
59.853
64.658
68.841
72.538
75.796
79.509
85.639
93.416
98.831
100.000
100.000
5,281,305
72.404
79.900
84.425
87.480
90.034
92.004
93.531
94.963
96.979
99.094
99.983
100.000
100.000
7,997,664
19.543
23.793
27.505
30.870
34.216
37.700
41.341
45.513
50.984
58.463
68.715
84.752
100.000
1,483,372
12.059
14.831
17.263
19.423
21.493
23.686
25.959
28.678
32.898
39.682
50.664
73.557
100.000
611,797
36.642
46.867
55.699
62.799
69.121
74.146
77.729
81.415
86.836
94.531
99.280
100.000
100.000
842,343
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,194,664
66.813
78.511
87.070
92.457
95.889
97.867
98.585
98.894
99.565
99.992
100.000
100.000
100.000
3,483,898
64.987
78.207
87.279
93.379
97.309
99.113
99.929
100.000
100.000
100.000
100.000
100.000
100.000
1,309,378
57.707
67.391
75.899
84.017
91.677
96.918
98.631
98.995
99.660
99.996
100.000
100.000
100.000
4,933,335
56.047
68.509
79.492
88.820
95.814
99.340
99.993
100.000
100.000
100.000
100.000
100.000
100.000
7,898,633
31.041
42.624
55.282
68.733
82.141
91.852
95.563
96.373
97.498
99.058
99.811
100.000
100.000
656,970
47.099
57.490
67.052
76.183
85.316
93.225
98.642
99.983
100.000
100.000
100.000
100.000
100.000
2,390,417
61.135
71.010
79.380
86.680
93.290
98.010
99.645
99.850
99.971
100.000
100.000
100.000
100.000
87,180,087
86.903
92.960
95.877
97.427
99.344
99.972
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,899,863
71.380
79.082
85.028
90.022
94.200
97.143
98.671
99.180
99.704
99.997
100.000
100.000
100.000
12,538,426
Appendix E. Tahoe stormwater particle size distribution data (continued).
141
Site
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Sample
Type
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-MS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
Sample
DateTime
4/12/03 16:25
4/14/03 8:33
4/16/03 10:36
4/18/03 13:00
4/19/03 9:56
4/19/03 12:39
4/20/03 12:31
4/21/03 7:56
4/22/03 14:15
4/24/03 11:06
4/25/03 18:11
4/26/03 8:44
4/28/03 8:14
4/28/03 10:01
5/7/03 23:08
5/8/03 8:21
5/8/03 10:03
5/8/03 11:47
5/8/03 15:21
5/8/03 19:37
5/9/03 8:52
5/9/03 11:59
5/9/03 19:46
6/23/03 16:32
6/23/03 17:03
6/23/03 17:28
6/23/03 18:18
7/22/03 16:02
7/23/03 1:24
7/23/03 14:43
7/27/03 13:29
7/31/03 13:13
8/1/03 22:02
8/2/03 0:33
8/21/03 10:38
8/21/03 15:10
9/4/03 13:35
11/1/03 11:22
11/1/03 12:50
11/9/03 13:54
11/9/03 14:36
12/5/03 7:50
12/5/03 12:06
1/9/04 11:14
1/27/04 12:25
1/27/04 17:03
1/27/04 17:57
1/28/04 11:50
1/28/04 17:25
1/28/04 18:03
1/28/04 18:53
1/28/04 22:41
2/2/04 23:02
2/3/04 5:20
2/3/04 13:01
2/3/04 18:38
2/4/04 2:26
2/6/04 15:34
2/7/04 11:22
2/7/04 17:21
Turbidity
(NTU)
122.0
501.0
400.0
60.0
16.9
26.5
50.4
160.0
41.2
173.0
206.0
262.0
490.0
116.0
70.1
210.0
188.0
151.0
131.0
89.0
138.0
79.0
230.0
396.0
439.0
259.0
297.0
480.0
40.0
495.0
133.0
323.0
66.0
51.0
120.0
186.0
18.5
818.0
662.0
444.0
655.0
281.0
184.0
278.0
419.0
1,378.0
1,187.0
465.0
333.0
302.0
314.0
256.0
109.0
36.7
650.0
820.0
224.0
198.0
735.0
942.0
TSS
(mg/L)
125.6
346.8
147.2
23.6
8.8
25.2
51.6
143.6
28.8
146.0
153.6
248.0
555.1
111.6
54.8
257.6
138.0
132.4
135.6
79.6
108.8
74.0
209.3
366.0
241.0
151.0
1,079.6
1,079.6
30.8
906.4
218.8
939.6
64.4
48.8
162.4
323.6
174.0
215.2
194.4
585.5
479.0
100.5
420.0
191.6
270.4
714.0
573.2
297.6
194.0
180.4
170.0
140.8
56.8
18.4
354.8
416.0
120.8
74.0
378.4
434.0
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
1.868
2.980
4.412
6.198
8.410
11.201
14.863
19.938
27.108
36.884
49.036
61.643
N
6.102
8.761
11.930
15.833
20.908
27.514
35.774
45.699
56.996
68.886
79.751
88.088
N
0.611
2.749
5.895
9.492
13.558
18.825
26.243
36.419
49.040
62.728
75.051
84.244
N
1.597
2.755
4.174
5.789
7.640
9.969
13.245
18.197
25.640
36.198
49.842
64.653
N
1.893
3.148
4.545
5.937
7.369
9.165
11.935
16.698
24.587
36.250
51.176
66.529
N
1.741
2.894
4.343
6.080
8.185
10.875
14.539
19.808
27.398
37.775
50.584
63.736
N
1.889
3.097
4.591
6.351
8.473
11.255
15.227
21.109
29.556
40.795
54.086
67.010
N
2.606
4.265
6.376
9.024
12.448
17.018
23.159
31.303
41.638
53.793
66.356
77.124
N
1.869
3.388
5.260
7.336
9.623
12.473
16.609
23.023
32.461
44.843
58.646
70.916
N
0.231
1.056
2.320
3.821
5.483
7.445
10.002
13.576
18.654
25.675
34.766
45.028
N
0.261
1.192
2.607
4.270
6.091
8.219
10.932
14.557
19.400
25.727
33.683
42.983
N
0.701
3.171
6.910
11.461
16.970
24.040
33.051
43.853
55.736
67.682
78.351
86.801
N
0.396
1.799
3.923
6.445
9.312
12.794
17.226
22.894
29.990
38.609
48.524
58.998
N
0.152
0.699
1.555
2.590
3.732
5.033
6.654
8.849
11.947
16.309
22.319
30.139
N
0.211
0.991
2.260
3.871
5.720
7.877
10.645
14.587
20.342
28.340
38.408
49.120
N
0.593
2.785
6.382
11.098
16.813
23.631
31.765
41.475
52.554
63.990
73.865
81.137
N
0.253
1.156
2.525
4.112
5.792
7.700
10.172
13.672
18.641
25.336
33.647
42.921
N
0.214
0.984
2.181
3.626
5.233
7.104
9.497
12.803
17.483
23.955
32.400
42.258
N
0.198
0.910
2.017
3.348
4.813
6.495
8.634
11.619
15.939
22.078
30.358
40.355
N
0.386
1.801
4.058
6.839
9.929
13.517
18.238
25.024
34.556
46.711
59.948
71.375
N
0.493
2.306
5.241
8.971
13.336
18.584
25.277
33.949
44.534
56.133
66.994
75.716
N
0.374
1.758
4.009
6.883
10.216
14.145
19.156
26.026
35.347
46.979
59.474
70.453
N
0.451
2.120
4.875
8.530
13.078
18.788
26.081
35.320
46.358
58.321
69.522
78.532
N
0.144
0.671
1.516
2.591
3.868
5.456
7.553
10.365
14.025
18.604
23.901
29.092
N
0.352
1.600
3.509
5.853
8.690
12.317
16.981
22.775
29.649
37.451
45.682
53.497
N
0.472
2.128
4.619
7.660
11.410
16.260
22.310
29.323
36.966
44.942
52.496
58.847
N
0.023
0.109
0.257
0.462
0.716
1.009
1.332
1.677
2.039
2.418
2.822
3.309
N
2.182
2.971
3.929
5.105
6.565
8.400
10.781
14.060
18.779
25.562
34.926
46.405
N
0.339
0.522
0.747
1.010
1.320
1.715
2.282
3.175
4.620
6.928
10.627
16.575
N
2.269
3.059
4.013
5.185
6.642
8.456
10.755
13.837
18.212
24.526
33.349
44.176
N
1.447
2.017
2.727
3.621
4.763
6.254
8.257
11.065
15.112
20.937
29.121
39.602
N
1.644
2.207
2.879
3.698
4.720
6.031
7.769
10.194
13.684
18.693
25.661
34.486
N
0.718
1.277
2.012
2.917
4.006
5.340
7.061
9.497
13.220
19.021
27.788
39.478
N
0.237
1.085
2.392
3.979
5.823
8.118
11.146
15.160
20.358
26.960
35.286
45.371
N
1.042
1.520
2.128
2.887
3.829
5.009
6.543
8.679
11.830
16.561
23.603
33.319
N
1.539
2.071
2.712
3.509
4.533
5.884
7.704
10.216
13.741
18.683
25.528
34.450
N
1.263
1.795
2.457
3.275
4.288
5.568
7.255
9.626
13.133
18.368
26.067
36.496
N
1.298
1.911
2.667
3.612
4.848
6.513
8.754
11.748
15.718
20.954
27.783
36.277
N
2.148
3.222
4.571
6.306
8.639
11.765
15.755
20.568
26.150
32.573
39.963
48.228
N
1.176
1.662
2.295
3.145
4.306
5.861
7.871
10.410
13.604
17.636
22.662
28.522
N
1.145
1.595
2.172
2.939
3.985
5.398
7.262
9.687
12.842
16.965
22.293
28.747
N
2.220
3.225
4.508
6.154
8.313
11.207
15.165
20.651
28.137
37.880
49.514
61.525
N
2.462
4.044
6.104
8.739
12.164
16.686
22.665
30.518
40.553
52.673
65.783
77.559
N
2.497
4.044
5.969
8.298
11.180
14.891
19.794
26.327
34.807
45.143
56.397
66.987
N
2.141
3.270
4.644
6.260
8.156
10.423
13.194
16.695
21.222
27.092
34.561
43.578
N
13.871
18.209
22.750
28.374
36.325
46.224
56.281
65.661
73.730
80.485
85.790
89.856
N
10.503
14.655
19.215
24.767
32.310
41.881
52.427
63.173
73.196
81.774
88.308
93.183
N
4.819
7.974
11.962
16.959
23.322
31.209
40.420
50.683
61.507
72.182
81.643
88.897
N
4.689
8.484
13.344
19.518
27.661
37.984
49.653
61.377
72.002
80.898
87.706
92.745
N
4.665
8.220
12.665
18.088
24.922
33.479
43.580
54.804
66.368
77.104
85.460
91.372
N
1.827
2.935
4.312
5.949
7.879
10.191
13.029
16.649
21.375
27.486
35.060
43.719
N
1.534
2.472
3.596
4.851
6.232
7.854
9.986
13.067
17.582
23.868
31.908
41.078
N
1.461
2.316
3.252
4.158
5.030
6.127
8.041
11.705
18.111
27.952
41.156
55.747
N
1.366
2.253
3.207
4.035
4.623
5.173
6.325
9.254
15.239
24.967
37.857
51.429
N
8.145
12.246
17.096
23.163
31.225
41.275
52.242
63.109
73.188
82.176
89.490
94.667
N
10.192
15.602
21.570
28.659
38.006
49.376
60.866
71.221
79.905
87.097
92.699
96.650
N
3.422
6.313
9.852
13.761
18.060
23.251
30.122
39.411
51.080
64.015
76.054
85.412
N
2.290
4.029
6.199
8.722
11.678
15.430
20.581
27.839
37.560
49.343
61.616
72.078
N
8.005
11.703
16.173
21.972
29.923
40.055
51.329
62.568
72.794
81.661
89.076
94.808
N
3.975
7.206
11.236
15.900
21.282
27.694
35.463
44.902
55.987
68.122
79.703
88.499
Appendix E. Tahoe stormwater particle size distribution data (continued).
142
Site
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Sample
Type
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-MS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
Sample
DateTime
4/12/03 16:25
4/14/03 8:33
4/16/03 10:36
4/18/03 13:00
4/19/03 9:56
4/19/03 12:39
4/20/03 12:31
4/21/03 7:56
4/22/03 14:15
4/24/03 11:06
4/25/03 18:11
4/26/03 8:44
4/28/03 8:14
4/28/03 10:01
5/7/03 23:08
5/8/03 8:21
5/8/03 10:03
5/8/03 11:47
5/8/03 15:21
5/8/03 19:37
5/9/03 8:52
5/9/03 11:59
5/9/03 19:46
6/23/03 16:32
6/23/03 17:03
6/23/03 17:28
6/23/03 18:18
7/22/03 16:02
7/23/03 1:24
7/23/03 14:43
7/27/03 13:29
7/31/03 13:13
8/1/03 22:02
8/2/03 0:33
8/21/03 10:38
8/21/03 15:10
9/4/03 13:35
11/1/03 11:22
11/1/03 12:50
11/9/03 13:54
11/9/03 14:36
12/5/03 7:50
12/5/03 12:06
1/9/04 11:14
1/27/04 12:25
1/27/04 17:03
1/27/04 17:57
1/28/04 11:50
1/28/04 17:25
1/28/04 18:03
1/28/04 18:53
1/28/04 22:41
2/2/04 23:02
2/3/04 5:20
2/3/04 13:01
2/3/04 18:38
2/4/04 2:26
2/6/04 15:34
2/7/04 11:22
2/7/04 17:21
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
72.559
81.267
87.742
92.705
96.631
98.936
99.411
99.509
99.663
99.806
99.994
100.000
100.000
9,350,640
93.189
96.193
97.849
98.791
99.413
99.703
99.806
99.830
99.927
99.998
100.000
100.000
100.000
59,657,341
90.168
93.851
96.201
97.865
99.157
99.728
99.906
99.982
100.000
100.000
100.000
100.000
100.000
21,879,225
77.532
86.856
92.539
96.165
98.807
99.913
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,752,472
78.675
87.658
92.625
95.645
99.343
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
663,674
74.918
83.702
90.005
94.838
98.371
99.732
99.985
100.000
100.000
100.000
100.000
100.000
100.000
1,908,785
77.334
85.086
90.688
94.752
97.594
99.099
99.785
99.997
100.000
100.000
100.000
100.000
100.000
4,060,878
84.984
90.672
94.482
97.009
98.383
99.047
99.465
99.559
99.715
99.995
100.000
100.000
100.000
15,969,541
79.915
86.605
91.441
94.931
97.461
99.092
99.978
100.000
100.000
100.000
100.000
100.000
100.000
2,792,294
55.115
64.678
73.630
82.513
91.054
97.280
99.460
99.748
99.953
100.000
100.000
100.000
100.000
8,555,037
53.198
64.248
75.231
85.184
92.966
97.622
99.046
99.373
99.830
99.999
100.000
100.000
100.000
10,069,955
92.053
95.112
96.800
97.877
98.870
99.516
99.823
99.965
100.000
100.000
100.000
100.000
100.000
43,820,594
69.562
80.078
88.849
94.928
98.433
99.832
99.999
100.000
100.000
100.000
100.000
100.000
100.000
55,071,980
39.820
51.402
63.870
76.187
87.220
94.965
98.216
99.113
99.858
100.000
100.000
100.000
100.000
4,387,369
59.109
68.397
76.981
84.779
91.325
96.062
98.405
99.246
99.726
99.997
100.000
100.000
100.000
3,179,346
86.057
89.791
92.588
94.704
96.325
97.610
98.602
99.084
99.572
99.995
100.000
100.000
100.000
42,572,584
52.834
63.678
74.984
85.809
94.112
98.467
99.630
99.770
99.959
100.000
100.000
100.000
100.000
8,719,572
52.751
63.669
74.508
84.669
93.000
98.063
99.563
99.768
99.951
100.000
100.000
100.000
100.000
7,312,399
51.199
62.485
73.329
83.169
91.283
96.545
98.703
99.282
99.759
99.996
100.000
100.000
100.000
6,911,902
79.804
86.116
90.782
94.370
97.276
99.358
99.968
100.000
100.000
100.000
100.000
100.000
100.000
8,218,599
82.279
87.443
91.604
95.073
97.524
99.143
99.930
100.000
100.000
100.000
100.000
100.000
100.000
14,656,085
78.902
85.374
90.124
93.815
96.781
98.639
99.648
99.995
100.000
100.000
100.000
100.000
100.000
7,627,672
84.932
89.667
92.952
95.457
97.447
98.798
99.480
99.692
99.899
99.999
100.000
100.000
100.000
26,667,054
33.630
37.998
42.750
48.680
56.300
67.193
82.093
93.835
98.635
99.952
100.000
100.000
100.000
14,318,429
60.399
66.392
72.263
78.780
85.330
89.930
91.954
93.388
94.972
96.224
96.911
99.039
100.000
21,677,632
64.146
69.428
75.598
82.416
89.195
94.730
97.608
98.836
99.660
99.996
100.000
100.000
100.000
17,868,021
4.099
5.857
10.207
17.285
23.796
28.838
34.301
44.398
66.075
90.104
99.110
99.993
100.000
7,269,759
58.406
69.247
78.542
86.960
92.981
96.203
97.644
98.505
99.510
99.991
100.000
100.000
100.000
55,379,215
25.695
38.086
52.216
66.144
78.471
87.904
93.446
96.531
98.705
99.733
99.850
99.993
100.000
365,479
55.276
65.304
73.806
81.162
87.343
91.550
93.532
94.672
96.235
97.551
98.130
99.184
100.000
46,435,444
51.280
62.886
72.972
80.964
86.907
90.898
93.189
94.713
96.510
98.073
99.045
99.966
100.000
8,287,527
44.386
54.636
64.382
72.791
79.455
84.701
88.726
91.843
94.646
96.457
97.314
98.786
100.000
34,164,572
52.477
64.666
74.075
81.297
86.904
91.133
94.877
98.384
99.623
99.997
100.000
100.000
100.000
2,418,180
56.346
66.589
74.294
80.005
84.878
89.846
95.588
98.760
99.721
99.998
100.000
100.000
100.000
2,977,128
45.076
57.599
69.271
79.078
86.660
91.890
94.784
96.222
97.547
98.486
99.034
99.962
100.000
5,169,162
44.933
56.182
67.054
76.389
83.500
88.372
91.090
92.863
94.937
96.536
97.527
99.164
100.000
11,254,829
48.766
61.158
71.776
80.258
86.941
92.000
95.323
97.170
98.687
99.601
99.775
99.991
100.000
6,099,271
46.199
56.821
66.274
74.358
81.985
89.152
94.404
97.431
99.391
99.993
100.000
100.000
100.000
8,731,394
57.324
67.491
77.016
84.586
90.267
94.279
96.597
97.987
99.405
99.991
100.000
100.000
100.000
14,012,399
34.940
42.024
49.604
57.943
67.398
77.317
85.745
92.149
97.179
99.293
99.442
99.777
100.000
19,647,641
36.027
44.130
52.760
62.195
72.909
84.230
92.713
97.346
99.648
99.999
100.000
100.000
100.000
14,763,832
72.310
81.103
87.561
92.367
95.955
98.178
99.093
99.342
99.740
99.996
100.000
100.000
100.000
6,834,940
86.311
92.047
95.269
97.203
98.608
99.390
99.730
99.962
100.000
100.000
100.000
100.000
100.000
45,184,637
76.025
82.968
88.598
94.036
97.872
99.606
99.987
100.000
100.000
100.000
100.000
100.000
100.000
19,431,463
54.235
66.766
79.223
89.301
95.983
99.277
99.985
100.000
100.000
100.000
100.000
100.000
100.000
19,551,759
92.086
93.884
95.089
96.062
96.874
97.457
97.878
98.173
98.647
99.172
99.580
99.987
100.000
190,241,122
95.800
97.636
98.656
99.262
99.713
99.913
99.995
100.000
100.000
100.000
100.000
100.000
100.000
148,394,297
93.116
95.787
97.253
98.180
98.886
99.359
99.646
99.778
99.902
99.997
100.000
100.000
100.000
62,209,538
95.691
97.831
98.794
99.188
99.653
99.804
99.921
99.999
100.000
100.000
100.000
100.000
100.000
49,327,336
95.062
97.440
98.527
99.048
99.566
99.813
99.960
99.999
100.000
100.000
100.000
100.000
100.000
42,047,686
53.249
63.890
74.868
85.179
93.388
98.193
99.549
99.737
99.943
100.000
100.000
100.000
100.000
12,200,127
50.915
61.479
72.390
82.866
91.626
97.338
99.368
99.719
99.950
100.000
100.000
100.000
100.000
8,308,027
68.606
77.981
84.216
89.185
93.977
97.683
99.225
99.468
99.796
99.997
100.000
100.000
100.000
2,887,117
63.233
73.023
81.879
89.607
94.812
97.998
99.746
99.998
100.000
100.000
100.000
100.000
100.000
936,693
96.979
98.216
98.853
99.241
99.660
99.853
99.947
99.991
100.000
100.000
100.000
100.000
100.000
93,804,189
98.177
98.968
99.276
99.447
99.637
99.730
99.791
99.923
99.999
100.000
100.000
100.000
100.000
139,245,819
91.487
95.256
97.311
98.480
99.305
99.718
99.943
99.998
100.000
100.000
100.000
100.000
100.000
22,110,228
79.553
84.646
88.346
91.779
95.577
98.601
99.827
99.981
100.000
100.000
100.000
100.000
100.000
8,351,219
97.530
98.773
99.196
99.489
99.753
99.916
99.988
100.000
100.000
100.000
100.000
100.000
100.000
92,074,786
93.386
96.286
97.911
98.600
99.401
99.842
99.960
99.999
100.000
100.000
100.000
100.000
100.000
90,314,461
Appendix E. Tahoe stormwater particle size distribution data (continued).
143
Site
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Sample
Type
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ACR
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-MS
SY-GS
SY-MSR
SY-ASC
Sample
DateTime
2/16/04 8:32
2/16/04 11:47
2/16/04 18:41
2/18/04 8:04
2/18/04 13:12
2/18/04 14:43
2/19/04 13:15
2/22/04 15:20
2/26/04 10:51
2/27/04 13:21
3/1/04 13:15
5/11/04 6:24
5/11/04 11:44
5/11/04 12:40
5/11/04 16:32
5/28/04 1:41
5/28/04 5:00
6/29/04 13:22
6/29/04 16:23
6/29/04 18:04
6/30/04 4:46
6/30/04 14:20
6/30/04 17:19
8/15/05 15:36
8/15/05 16:01
8/15/05 17:18
9/26/05 16:35
9/26/05 20:50
9/26/05 23:56
10/24/05 20:12
11/30/05 21:34
12/1/05 5:07
12/1/05 13:12
12/1/05 16:11
12/1/05 19:38
12/21/05 18:33
12/21/05 21:53
12/22/05 3:55
12/22/05 12:55
12/27/05 13:17
12/28/05 4:43
12/28/05 4:44
12/30/05 7:22
12/30/05 18:07
12/31/05 11:35
1/30/06 7:41
2/1/06 10:37
2/2/06 4:25
2/26/06 18:24
2/27/06 5:18
2/27/06 11:54
2/27/06 22:07
4/2/06 15:31
4/3/06 0:42
4/3/06 9:37
4/4/06 7:29
4/6/06 7:00
4/6/06 7:00
4/6/06 7:01
4/16/06 4:34
Turbidity
(NTU)
398.0
331.0
169.0
428.0
410.0
315.0
186.0
1,037.0
427.0
478.0
970.0
138.0
71.9
70.4
45.8
48.5
96.6
110.0
85.0
62.0
44.0
112.0
82.0
703.0
438.0
198.0
404.0
92.4
87.1
57.8
70.2
67.4
73.7
67.3
39.3
218.0
24.2
21.4
87.2
212.0
64.4
70.1
242.0
44.7
36.5
589.0
210.0
108.0
273.0
94.5
175.0
32.7
23.7
148.0
105.0
165.0
14.5
14.3
12.7
133.0
TSS
(mg/L)
403.0
412.8
144.8
381.6
310.4
270.0
88.8
280.8
354.4
406.0
630.4
166.4
33.2
44.0
46.0
59.2
170.8
804.0
57.5
91.0
1,071.0
106.5
67.0
1,202.0
824.0
265.0
615.2
88.0
90.8
42.8
58.0
81.2
126.8
105.2
49.2
310.4
28.0
10.8
103.2
201.2
90.5
91.0
266.8
68.0
56.0
355.0
130.5
95.5
239.6
77.6
238.0
39.6
19.2
182.8
85.2
162.4
6.0
6.4
6.0
115.2
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
3.085
4.454
6.150
8.268
10.971
14.460
18.983
24.901
32.508
41.739
51.769
61.195
N
2.368
3.237
4.279
5.535
7.058
8.932
11.328
14.592
19.229
25.761
34.486
44.833
N
2.007
2.949
4.122
5.558
7.326
9.548
12.444
16.411
22.005
29.769
39.933
51.620
N
5.376
7.548
10.233
13.724
18.492
24.921
33.159
43.141
54.450
66.244
77.038
85.519
N
4.572
6.630
9.150
12.341
16.639
22.558
30.527
40.763
52.948
66.032
77.994
87.078
N
4.106
6.236
8.910
12.282
16.638
22.255
29.314
37.969
48.234
59.770
71.402
81.304
N
1.763
2.888
4.261
5.830
7.618
9.836
12.937
17.650
24.790
34.946
48.031
62.283
N
9.502
12.983
16.896
21.679
28.005
35.917
44.819
54.451
64.514
74.508
83.163
89.618
N
4.886
7.475
10.716
14.825
20.221
27.263
36.055
46.489
58.145
70.188
81.040
89.215
N
6.043
8.817
12.306
16.847
22.911
30.664
39.819
49.960
60.685
71.599
81.780
89.827
N
9.388
12.272
15.646
20.060
26.230
34.300
43.773
54.094
64.600
74.679
83.406
90.148
N
0.220
0.459
0.869
1.533
2.469
3.558
4.705
6.095
7.921
10.027
12.580
15.580
N
0.312
0.913
2.048
3.824
6.164
8.858
11.809
15.207
19.425
24.854
32.152
40.390
N
0.302
0.795
1.677
3.021
4.782
6.835
9.129
11.809
15.196
19.764
26.369
34.873
N
0.269
0.629
1.226
2.082
3.153
4.368
5.729
7.381
9.591
12.759
17.615
24.235
N
0.375
1.038
2.249
4.107
6.558
9.490
12.958
17.271
22.719
29.460
37.982
47.268
N
0.503
1.214
2.425
4.216
6.534
9.273
12.463
16.404
21.601
28.620
38.080
49.444
N
0.542
1.026
1.735
2.662
3.740
4.920
6.286
8.169
11.129
15.852
23.119
33.078
N
0.234
0.514
0.971
1.640
2.514
3.523
4.616
5.934
7.764
10.394
14.572
20.756
N
0.882
1.789
3.261
5.390
8.124
11.312
14.923
19.232
24.834
32.573
43.491
55.982
N
0.549
0.988
1.614
2.405
3.290
4.197
5.162
6.431
8.353
11.277
16.069
22.921
N
0.438
0.997
1.927
3.287
5.050
7.147
9.591
12.590
16.538
21.981
29.701
39.675
N
0.356
0.775
1.459
2.441
3.683
5.113
6.727
8.701
11.447
15.705
22.796
33.205
N
0.610
1.070
1.724
2.568
3.556
4.673
6.041
8.007
11.098
15.929
23.291
33.642
N
0.449
0.820
1.359
2.070
2.924
3.907
5.101
6.749
9.244
13.080
18.943
27.313
N
0.664
1.062
1.616
2.355
3.291
4.454
5.925
7.881
10.596
14.492
20.386
29.357
N
0.714
1.537
2.852
4.725
7.122
10.011
13.547
18.170
24.450
32.814
43.458
55.634
N
0.679
1.737
3.585
6.324
9.805
13.763
18.151
23.309
29.502
36.315
43.172
50.314
N
0.220
0.287
0.360
0.437
0.516
0.601
0.696
0.808
0.932
1.057
1.167
1.265
N
6.881
18.140
25.036
44.549
84.961
99.775
100.000
100.000
100.000
100.000
100.000
100.000
N
0.810
1.852
3.549
5.958
8.980
12.512
16.705
22.044
29.028
37.823
48.246
58.675
N
0.605
1.373
2.638
4.463
6.795
9.568
12.909
17.251
23.190
31.245
41.793
53.910
N
0.755
1.416
2.392
3.704
5.319
7.239
9.623
12.854
17.438
23.845
32.479
43.147
N
0.594
1.229
2.225
3.623
5.395
7.516
10.099
13.481
18.142
24.543
33.077
43.351
N
0.411
0.920
1.756
2.965
4.530
6.424
8.745
11.761
15.786
21.143
28.530
37.989
N
0.632
1.501
2.972
5.143
7.969
11.352
15.354
20.308
26.657
34.664
44.252
54.324
N
0.267
0.986
2.483
4.904
8.021
11.407
15.017
19.516
25.412
32.143
39.752
48.334
N
0.918
2.189
4.375
7.559
11.552
15.716
19.629
24.053
29.467
35.366
40.554
47.852
N
0.407
1.131
2.462
4.566
7.409
10.708
14.269
18.463
23.831
30.268
37.688
44.717
N
0.442
1.692
4.373
8.854
14.876
21.681
28.743
36.233
44.306
52.294
59.954
66.134
N
0.196
0.803
2.144
4.390
7.379
10.752
14.404
18.694
23.925
29.798
36.215
43.198
N
0.399
1.255
2.919
5.543
8.983
12.940
17.378
22.794
29.918
39.106
49.917
59.733
N
0.666
2.021
4.633
8.807
14.452
21.173
28.732
37.299
47.143
58.054
69.191
78.739
N
0.445
1.245
2.717
4.985
7.972
11.506
15.602
20.596
26.879
34.586
43.786
53.496
N
0.454
1.389
3.196
6.072
9.915
14.401
19.351
24.968
31.572
39.260
48.267
57.095
N
0.908
2.717
6.167
11.614
18.846
27.176
36.067
45.508
55.517
65.302
73.392
78.517
N
1.042
3.039
6.779
12.573
20.090
28.516
37.212
46.056
54.916
63.238
70.406
73.214
N
0.620
1.964
4.586
8.736
14.166
20.282
26.760
33.914
42.142
51.119
59.716
65.297
N
0.768
2.370
5.466
10.381
16.914
24.460
32.566
41.242
50.583
60.164
69.120
76.062
N
0.592
2.087
5.164
10.176
16.809
24.207
31.738
39.518
47.792
56.045
63.859
70.043
N
0.413
1.176
2.596
4.803
7.715
11.127
14.980
19.527
25.112
31.807
39.351
46.516
N
0.276
0.995
2.492
4.934
8.142
11.702
15.454
19.752
24.773
30.009
35.875
42.309
N
0.568
1.879
4.632
9.206
15.219
21.538
27.485
33.954
41.541
47.956
52.854
58.809
N
0.651
1.714
3.614
6.514
10.346
14.913
20.157
26.235
33.257
41.058
49.463
57.511
N
0.632
2.021
4.754
9.115
14.864
21.376
28.285
35.929
44.765
54.298
63.322
69.558
N
0.835
2.463
5.552
10.420
16.910
24.491
32.773
41.803
51.719
62.094
71.872
79.429
N
1.786
2.480
2.839
3.595
6.492
11.319
14.625
15.318
17.873
22.274
24.764
26.665
N
1.915
2.914
4.443
6.331
8.260
9.871
10.881
11.399
12.143
14.121
17.150
18.553
N
1.162
1.781
2.908
4.505
6.185
7.478
8.427
9.592
10.873
12.255
14.718
17.563
N
0.427
1.607
4.135
8.389
14.192
20.850
27.823
35.096
42.363
48.511
53.079
55.634
Appendix E. Tahoe stormwater particle size distribution data (continued).
144
Site
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Sample
Type
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-AS
SY-ASC
SY-AS
SY-AS
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ACR
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-MS
SY-GS
SY-MSR
SY-ASC
Sample
DateTime
2/16/04 8:32
2/16/04 11:47
2/16/04 18:41
2/18/04 8:04
2/18/04 13:12
2/18/04 14:43
2/19/04 13:15
2/22/04 15:20
2/26/04 10:51
2/27/04 13:21
3/1/04 13:15
5/11/04 6:24
5/11/04 11:44
5/11/04 12:40
5/11/04 16:32
5/28/04 1:41
5/28/04 5:00
6/29/04 13:22
6/29/04 16:23
6/29/04 18:04
6/30/04 4:46
6/30/04 14:20
6/30/04 17:19
8/15/05 15:36
8/15/05 16:01
8/15/05 17:18
9/26/05 16:35
9/26/05 20:50
9/26/05 23:56
10/24/05 20:12
11/30/05 21:34
12/1/05 5:07
12/1/05 13:12
12/1/05 16:11
12/1/05 19:38
12/21/05 18:33
12/21/05 21:53
12/22/05 3:55
12/22/05 12:55
12/27/05 13:17
12/28/05 4:43
12/28/05 4:44
12/30/05 7:22
12/30/05 18:07
12/31/05 11:35
1/30/06 7:41
2/1/06 10:37
2/2/06 4:25
2/26/06 18:24
2/27/06 5:18
2/27/06 11:54
2/27/06 22:07
4/2/06 15:31
4/3/06 0:42
4/3/06 9:37
4/4/06 7:29
4/6/06 7:00
4/6/06 7:00
4/6/06 7:01
4/16/06 4:34
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
69.453
77.038
83.782
89.665
94.469
97.462
98.611
98.980
99.605
99.993
100.000
100.000
100.000
36,391,768
55.836
67.050
77.445
86.364
93.270
97.298
98.519
98.844
99.531
99.988
100.000
100.000
100.000
23,047,647
63.273
73.698
81.989
88.672
94.179
97.931
99.172
99.326
99.561
99.728
99.866
100.000
100.000
8,958,997
90.925
94.237
96.281
97.699
98.846
99.466
99.704
99.761
99.890
99.998
100.000
100.000
100.000
55,444,784
92.828
96.144
97.862
98.826
99.542
99.909
99.996
100.000
100.000
100.000
100.000
100.000
100.000
42,372,040
88.391
93.163
96.175
98.095
99.176
99.827
99.997
100.000
100.000
100.000
100.000
100.000
100.000
38,224,629
75.073
84.986
91.615
95.785
98.492
99.716
99.895
99.964
100.000
100.000
100.000
100.000
100.000
6,391,795
93.391
95.891
97.393
98.405
99.164
99.593
99.797
99.827
99.914
99.998
100.000
100.000
100.000
61,464,767
94.085
96.917
98.383
99.130
99.612
99.890
99.997
100.000
100.000
100.000
100.000
100.000
100.000
61,059,140
94.653
97.445
98.692
99.268
99.719
99.912
99.995
100.000
100.000
100.000
100.000
100.000
100.000
75,441,774
93.990
96.138
97.359
98.164
98.623
98.854
99.033
99.164
99.420
99.716
99.911
100.000
100.000
118,637,131
17.297
19.216
20.905
21.679
22.666
24.841
30.997
50.594
83.683
98.870
100.000
100.000
100.000
3,287,643
47.825
56.364
63.916
70.248
75.497
78.261
79.757
80.935
83.466
87.607
93.646
99.780
100.000
1,708,113
42.887
52.051
60.562
66.612
72.469
77.085
81.666
84.480
89.257
94.078
98.634
100.000
100.000
1,789,459
32.226
42.847
54.864
64.945
75.192
85.154
91.720
94.750
98.195
99.959
100.000
100.000
100.000
1,284,030
54.454
62.113
69.458
74.519
78.463
81.420
82.875
84.903
88.058
93.309
98.636
100.000
100.000
3,295,643
60.069
69.483
76.387
81.560
87.286
92.483
95.411
96.186
97.523
99.604
100.000
100.000
100.000
9,682,694
44.499
56.119
67.955
79.226
87.249
93.868
96.779
97.666
98.882
99.711
99.999
100.000
100.000
27,582,494
26.905
35.867
46.787
57.010
67.433
77.041
84.250
87.505
91.814
97.077
99.255
100.000
100.000
1,249,455
66.683
76.366
84.707
89.341
91.045
92.043
92.771
93.735
96.365
99.949
100.000
100.000
100.000
6,365,439
30.141
40.503
51.002
59.367
67.034
73.041
77.276
78.665
81.600
85.640
89.065
96.286
100.000
32,460,009
49.982
60.250
72.120
84.045
90.636
94.913
96.507
96.662
97.677
99.599
100.000
100.000
100.000
4,679,841
45.168
57.293
68.834
74.765
79.061
84.142
86.748
89.346
91.855
95.749
99.155
100.000
100.000
2,164,670
45.498
56.345
66.519
77.035
83.660
88.040
91.459
92.746
95.124
98.553
99.995
100.000
100.000
38,658,968
37.384
47.552
57.265
66.229
72.403
78.554
83.493
86.885
91.345
96.264
99.921
100.000
100.000
21,738,418
41.414
54.724
65.863
73.354
77.890
81.775
85.215
87.945
91.334
96.670
99.987
100.000
100.000
7,424,838
66.903
76.934
83.476
87.631
93.060
98.530
99.990
100.000
100.000
100.000
100.000
100.000
100.000
38,717,679
58.382
62.864
65.159
70.708
73.858
80.426
93.275
99.582
100.000
100.000
100.000
100.000
100.000
7,489,405
1.409
1.623
1.776
2.175
3.529
5.581
23.900
69.213
95.758
98.604
98.984
99.982
100.000
361,658
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
28,616,827
65.118
69.624
72.841
75.243
76.910
78.883
81.922
89.034
97.635
99.987
100.000
100.000
100.000
4,643,208
64.598
73.106
77.472
80.763
83.971
86.729
90.233
95.308
99.018
99.995
100.000
100.000
100.000
4,856,667
54.611
65.424
72.863
77.694
82.264
86.221
89.602
94.332
98.601
99.388
99.978
100.000
100.000
6,055,128
53.650
63.071
69.833
75.166
79.557
83.521
86.663
90.573
96.212
99.384
99.998
100.000
100.000
5,035,305
46.539
55.350
62.648
67.329
71.602
75.129
79.092
84.065
94.188
99.824
100.000
100.000
100.000
1,953,456
62.933
69.780
75.338
80.225
83.733
86.630
89.651
91.727
95.157
98.307
99.965
100.000
100.000
21,459,134
54.582
61.064
66.424
69.063
71.679
73.711
77.141
81.869
91.495
98.149
99.994
100.000
100.000
1,831,467
48.664
52.617
53.390
53.390
53.390
53.390
57.775
73.216
80.628
88.370
97.787
100.000
100.000
1,081,551
49.850
55.232
59.159
62.513
64.645
67.744
70.143
73.176
78.188
82.555
87.157
95.591
100.000
6,339,380
69.930
74.927
79.391
82.481
86.303
89.503
92.540
94.613
97.436
99.971
100.000
100.000
100.000
23,654,936
48.041
54.406
59.660
63.374
68.689
72.914
81.534
93.158
99.557
100.000
100.000
100.000
100.000
5,270,639
68.387
77.462
83.754
89.780
92.555
93.654
94.793
96.814
98.901
99.988
100.000
100.000
100.000
6,802,051
85.482
93.053
98.303
99.795
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
31,669,513
60.350
67.519
72.840
73.599
73.864
74.073
74.615
75.534
78.505
84.190
89.726
96.814
100.000
4,584,009
62.416
69.124
74.168
76.327
76.537
76.537
76.668
82.626
94.892
99.951
100.000
100.000
100.000
4,575,725
80.915
84.576
87.452
89.305
91.620
93.168
95.815
99.655
100.000
100.000
100.000
100.000
100.000
55,386,143
73.311
73.693
76.073
78.554
82.214
83.851
88.068
94.361
97.981
99.980
100.000
100.000
100.000
22,020,005
70.036
75.016
78.462
81.049
83.221
85.701
90.579
97.765
99.660
100.000
100.000
100.000
100.000
11,196,156
79.389
83.383
86.485
88.684
90.343
91.779
94.206
99.374
100.000
100.000
100.000
100.000
100.000
33,433,052
73.798
78.585
82.192
84.272
87.765
89.938
92.244
98.921
100.000
100.000
100.000
100.000
100.000
10,528,258
51.691
56.966
61.533
65.376
69.136
74.948
84.300
94.693
99.473
99.997
100.000
100.000
100.000
15,417,058
46.505
51.825
56.506
59.651
62.905
65.612
69.257
73.458
82.689
90.223
95.576
99.853
100.000
2,604,166
60.549
67.459
69.563
72.882
73.854
74.938
78.705
91.817
98.962
99.999
100.000
100.000
100.000
2,314,545
61.512
65.437
69.121
71.379
73.583
75.872
78.538
81.661
85.261
89.753
94.682
99.810
100.000
16,062,564
73.948
78.987
82.693
85.378
88.980
91.126
94.610
98.475
99.911
100.000
100.000
100.000
100.000
10,412,553
83.006
87.123
90.456
92.711
94.429
96.267
98.344
99.946
100.000
100.000
100.000
100.000
100.000
22,773,723
33.887
40.218
47.569
52.020
56.457
63.235
68.826
92.915
99.993
100.000
100.000
100.000
100.000
252,329
27.858
36.698
43.745
48.907
49.780
56.078
66.551
94.449
99.995
100.000
100.000
100.000
100.000
446,382
21.731
28.571
33.506
36.385
37.257
40.143
49.725
71.947
82.125
92.738
99.933
100.000
100.000
291,690
55.870
56.918
57.348
57.552
58.329
60.531
65.304
77.879
94.454
99.954
100.000
100.000
100.000
12,840,299
Appendix E. Tahoe stormwater particle size distribution data (continued).
145
Site
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-GS
SY-MS
SY-MSR
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-GS
SY-MS
SY-MSR
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
Sample
DateTime
4/17/06 7:14
4/25/06 17:14
10/5/06 11:38
10/10/06 3:16
10/10/06 4:23
10/10/06 9:48
11/3/06 13:53
11/13/06 7:05
11/13/06 11:58
11/13/06 15:59
11/13/06 21:12
12/26/06 23:12
1/3/07 22:15
1/4/07 5:40
2/8/07 20:42
2/9/07 0:53
2/9/07 13:29
2/9/07 13:30
2/9/07 13:31
2/10/07 9:54
2/11/07 12:20
3/6/07 13:53
3/26/07 17:40
3/27/07 10:13
4/22/07 9:05
9/20/07 0:12
9/22/07 7:36
10/19/07 21:56
11/9/07 16:18
11/11/07 0:03
11/11/07 7:56
1/4/08 6:14
1/4/08 10:36
1/4/08 12:01
1/4/08 12:02
1/4/08 12:03
1/4/08 16:20
5/25/08 16:04
10/3/08 20:21
11/1/08 6:49
11/1/08 19:42
1/22/09 5:01
1/22/09 9:33
1/22/09 15:20
1/23/09 13:12
2/22/09 8:28
3/2/09 9:02
5/1/09 16:11
5/3/09 5:04
5/4/09 20:04
7/29/09 14:11
12/26/02 19:28
1/8/03 15:12
1/12/03 14:43
3/15/03 3:36
3/23/03 1:07
3/26/03 8:20
4/21/03 10:26
4/28/03 6:11
4/28/03 8:46
Turbidity
(NTU)
218.0
194.0
198.0
41.5
42.3
167.0
102.0
43.6
93.9
93.5
31.7
1,450.0
401.0
198.0
492.0
230.0
531.0
560.0
569.0
276.0
286.0
99.6
730.0
423.0
199.0
96.9
122.0
63.2
97.4
66.6
37.7
885.0
134.0
347.0
417.0
384.0
60.7
104.0
113.0
106.0
86.1
591.0
401.0
218.0
266.0
352.0
127.0
262.0
67.4
36.2
111.0
110.0
75.0
55.0
105.0
44.0
64.0
53.0
74.0
115.0
TSS
(mg/L)
186.0
191.0
266.0
28.0
30.0
163.0
93.6
34.8
56.0
108.0
32.0
725.0
226.4
174.4
328.5
182.0
328.5
349.5
353.0
346.5
223.5
77.5
317.6
424.4
190.5
120.5
155.0
53.0
111.0
51.5
37.5
504.0
121.0
355.3
345.3
340.0
45.0
64.5
107.0
72.5
116.5
388.0
362.0
147.5
199.5
246.5
180.0
201.5
61.6
35.6
136.8
191.2
86.4
65.6
254.8
87.2
130.0
68.0
178.4
243.8
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
0.557
1.909
4.672
9.201
15.300
22.291
29.619
37.234
45.042
52.155
57.435
60.549
N
0.580
1.633
3.583
6.620
10.676
15.521
21.103
27.691
35.535
44.403
53.588
61.597
N
0.544
1.122
2.033
3.331
5.016
7.069
9.568
12.804
17.281
23.625
32.559
44.127
N
0.710
1.279
2.166
3.719
6.778
12.000
18.980
26.977
36.151
45.730
55.160
63.818
N
0.517
1.275
2.662
4.968
8.446
13.159
19.027
25.972
34.038
43.378
54.464
66.329
N
0.502
1.650
3.984
7.883
13.398
20.254
28.219
37.305
47.455
58.214
69.220
78.991
N
0.379
1.197
2.825
5.515
9.291
13.927
19.168
24.864
30.956
37.562
45.596
55.958
N
0.432
1.383
3.202
5.967
9.348
12.797
15.998
19.130
22.541
26.393
31.287
37.891
N
0.818
2.752
6.619
12.757
20.510
28.315
34.869
40.244
44.994
48.612
51.426
54.900
N
0.318
1.091
2.695
5.396
9.193
13.787
18.843
24.221
29.954
36.169
43.623
52.643
N
0.292
0.837
1.893
3.648
6.219
9.610
13.792
18.659
23.852
29.017
34.832
41.889
N
0.637
2.597
6.978
14.595
25.318
37.996
51.371
64.615
76.685
85.919
92.300
96.916
N
1.024
2.902
6.378
11.763
18.862
27.132
36.276
46.456
57.595
68.681
78.639
86.954
N
0.873
2.133
4.306
7.567
11.891
17.157
23.418
30.959
39.999
50.417
61.934
73.489
N
3.860
6.099
8.965
12.413
16.237
20.268
24.715
30.342
38.032
48.237
60.722
73.116
N
3.711
5.776
8.408
11.556
15.044
18.736
22.818
28.006
35.292
45.479
58.895
73.562
N
5.159
7.948
11.446
15.797
20.918
26.506
32.529
39.612
48.489
59.248
71.450
83.101
N
4.777
7.457
10.863
15.036
19.827
25.016
30.694
37.508
46.197
57.051
69.880
82.472
N
4.920
7.729
11.363
15.965
21.421
27.388
33.805
41.274
50.490
61.575
74.120
85.475
N
2.590
3.957
5.718
7.848
10.237
12.815
15.757
19.644
25.316
33.594
45.062
58.635
N
4.728
7.861
12.509
19.617
29.233
39.906
50.473
61.498
72.794
82.210
89.670
95.655
N
6.350
9.884
14.632
21.104
29.325
38.557
48.032
57.570
66.961
75.412
82.311
86.912
N
4.343
6.740
10.116
14.814
20.884
27.952
35.652
43.986
52.945
62.110
71.296
80.150
N
7.542
11.613
17.042
24.765
34.951
46.336
57.554
68.361
78.476
86.622
92.819
98.093
N
2.777
4.736
7.906
12.932
19.964
28.302
37.426
47.868
59.396
69.864
78.801
87.240
N
2.369
3.414
4.690
6.251
8.180
10.617
13.817
18.156
23.978
31.498
41.045
52.494
N
2.062
3.160
4.590
6.385
8.566
11.222
14.609
19.173
25.358
33.504
44.038
56.822
N
3.050
4.753
7.012
9.875
13.249
17.002
21.245
26.498
33.349
42.157
53.216
65.409
N
9.289
11.311
13.309
15.772
19.068
23.093
27.665
32.994
39.447
47.198
56.460
65.996
N
5.665
8.044
10.994
14.769
19.453
24.862
30.881
37.729
45.647
54.621
64.682
74.839
N
5.207
7.241
9.874
13.498
18.310
24.113
30.707
38.185
46.529
55.381
64.840
73.848
Y
6.656
10.389
15.556
22.710
31.809
41.943
52.273
62.802
73.513
83.386
91.723
97.313
Y
4.540
7.231
10.973
15.986
22.191
29.279
37.208
46.331
56.676
67.608
78.477
87.552
Y
3.395
5.476
8.341
12.095
16.672
21.924
27.916
35.086
43.902
54.462
66.428
77.938
Y
3.423
5.548
8.483
12.346
17.051
22.414
28.528
35.939
45.110
55.836
67.357
78.270
Y
3.541
5.794
8.949
13.164
18.348
24.250
30.909
38.863
48.479
59.311
70.390
80.477
Y
4.200
6.466
9.555
13.796
19.256
25.580
32.475
40.227
49.222
59.348
70.783
81.413
Y
4.623
7.164
10.475
14.687
19.733
25.375
31.566
38.612
46.755
56.073
66.903
77.454
Y
2.127
3.083
4.308
5.924
8.135
11.164
15.137
20.024
25.803
32.829
42.225
54.487
Y
3.649
5.561
8.045
11.313
15.504
20.558
26.339
32.781
39.890
47.861
57.431
68.134
Y
1.705
2.690
4.105
6.084
8.673
11.803
15.470
19.859
25.183
31.551
39.220
47.975
Y
6.065
9.757
14.886
21.923
30.776
40.586
50.571
60.682
70.833
80.228
88.628
95.580
Y
3.804
6.272
9.881
14.915
21.301
28.585
36.462
45.095
54.576
64.426
74.189
83.239
Y
6.994
10.752
15.794
22.629
31.290
40.991
50.803
60.440
69.947
78.957
87.034
93.008
Y
4.524
7.327
11.422
17.206
24.648
33.163
42.197
51.634
61.298
70.615
79.450
87.408
Y
6.688
10.435
15.636
22.786
31.819
41.881
52.114
62.249
71.995
80.700
88.177
93.451
Y
2.524
4.210
6.691
10.141
14.510
19.535
25.076
31.341
38.579
46.743
55.700
64.707
Y
4.178
5.920
8.262
11.542
15.963
21.430
27.880
35.494
44.330
54.223
65.212
75.772
Y
4.949
6.915
9.539
13.322
18.587
25.158
32.789
41.493
51.105
61.155
71.254
79.530
Y
4.709
6.346
8.577
12.060
17.174
23.557
30.896
39.526
49.287
59.091
69.211
78.712
Y
3.515
4.946
6.798
9.300
12.563
16.488
21.114
26.839
34.011
42.750
52.961
61.810
N
3.162
5.280
7.905
11.046
14.899
19.830
26.236
34.454
44.535
56.110
68.120
78.904
N
2.335
4.008
6.117
8.624
11.634
15.524
20.968
28.851
39.771
53.405
67.740
79.504
N
1.898
3.235
4.944
7.023
9.574
12.872
17.395
23.808
32.720
44.287
57.610
70.225
N
0.362
1.657
3.650
6.063
8.855
12.355
17.119
23.774
32.751
44.019
56.566
68.132
N
0.268
1.234
2.731
4.548
6.620
9.177
12.699
17.854
25.287
35.378
47.809
60.830
N
2.278
3.610
5.357
7.592
10.455
14.194
19.244
26.290
36.039
48.726
63.252
76.435
N
0.459
2.094
4.571
7.478
10.708
14.684
20.174
28.049
38.787
52.033
66.019
77.937
N
0.261
1.204
2.670
4.439
6.402
8.716
11.799
16.356
23.278
33.414
47.088
62.424
N
0.498
2.256
4.913
8.081
11.755
16.349
22.320
29.951
39.265
50.071
61.728
73.022
Appendix E. Tahoe stormwater particle size distribution data (continued).
146
Site
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
South Y
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SY-ASC
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-AS
SY-AS
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-GS
SY-MS
SY-MSR
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-GS
SY-MS
SY-MSR
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SY-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
Sample
DateTime
4/17/06 7:14
4/25/06 17:14
10/5/06 11:38
10/10/06 3:16
10/10/06 4:23
10/10/06 9:48
11/3/06 13:53
11/13/06 7:05
11/13/06 11:58
11/13/06 15:59
11/13/06 21:12
12/26/06 23:12
1/3/07 22:15
1/4/07 5:40
2/8/07 20:42
2/9/07 0:53
2/9/07 13:29
2/9/07 13:30
2/9/07 13:31
2/10/07 9:54
2/11/07 12:20
3/6/07 13:53
3/26/07 17:40
3/27/07 10:13
4/22/07 9:05
9/20/07 0:12
9/22/07 7:36
10/19/07 21:56
11/9/07 16:18
11/11/07 0:03
11/11/07 7:56
1/4/08 6:14
1/4/08 10:36
1/4/08 12:01
1/4/08 12:02
1/4/08 12:03
1/4/08 16:20
5/25/08 16:04
10/3/08 20:21
11/1/08 6:49
11/1/08 19:42
1/22/09 5:01
1/22/09 9:33
1/22/09 15:20
1/23/09 13:12
2/22/09 8:28
3/2/09 9:02
5/1/09 16:11
5/3/09 5:04
5/4/09 20:04
7/29/09 14:11
12/26/02 19:28
1/8/03 15:12
1/12/03 14:43
3/15/03 3:36
3/23/03 1:07
3/26/03 8:20
4/21/03 10:26
4/28/03 6:11
4/28/03 8:46
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
62.299
65.210
66.891
67.932
70.030
72.329
76.166
88.647
98.744
99.995
100.000
100.000
100.000
22,856,010
65.823
69.482
73.256
76.837
81.061
86.529
94.534
98.884
99.718
99.998
100.000
100.000
100.000
17,086,297
56.901
69.870
79.892
86.050
91.397
96.041
98.594
98.856
99.468
99.986
100.000
100.000
100.000
11,698,136
66.381
70.845
73.889
75.682
77.272
80.476
81.516
81.853
81.895
97.901
100.000
100.000
100.000
1,399,132
74.731
83.904
89.407
93.707
96.495
98.381
99.971
100.000
100.000
100.000
100.000
100.000
100.000
2,009,212
82.982
88.397
92.222
94.463
96.221
98.960
99.989
100.000
100.000
100.000
100.000
100.000
100.000
17,313,516
65.451
75.707
84.304
89.771
94.344
97.499
99.876
100.000
100.000
100.000
100.000
100.000
100.000
6,946,709
43.927
49.597
54.631
57.633
61.023
73.584
93.355
99.561
99.973
100.000
100.000
100.000
100.000
2,781,635
57.423
59.555
59.727
59.727
59.803
65.881
90.606
99.931
100.000
100.000
100.000
100.000
100.000
9,453,645
60.967
69.567
75.869
80.288
84.903
88.970
94.803
98.575
99.848
100.000
100.000
100.000
100.000
7,801,851
48.071
56.693
63.582
68.986
74.112
80.169
89.865
95.738
97.994
99.958
100.000
100.000
100.000
1,582,494
97.465
97.465
97.465
97.556
98.677
99.961
100.000
100.000
100.000
100.000
100.000
100.000
100.000
140,024,487
90.726
93.493
95.463
97.008
98.224
99.634
99.999
100.000
100.000
100.000
100.000
100.000
100.000
35,893,274
81.915
87.593
91.099
93.531
95.732
98.007
99.641
99.946
100.000
100.000
100.000
100.000
100.000
17,783,267
80.890
85.906
89.129
91.462
94.528
97.699
99.487
99.963
100.000
100.000
100.000
100.000
100.000
47,903,508
84.296
90.759
94.305
96.203
98.035
99.209
99.897
99.997
100.000
100.000
100.000
100.000
100.000
24,415,399
89.319
93.234
95.375
96.472
97.706
99.506
99.999
100.000
100.000
100.000
100.000
100.000
100.000
59,765,343
89.589
94.139
96.673
97.640
98.698
99.829
100.000
100.000
100.000
100.000
100.000
100.000
100.000
61,173,759
90.907
95.066
97.107
98.242
99.064
99.882
100.000
100.000
100.000
100.000
100.000
100.000
100.000
65,827,069
71.047
80.695
86.065
89.823
93.793
97.414
99.132
99.858
100.000
100.000
100.000
100.000
100.000
31,045,122
96.997
98.922
99.984
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
52,250,888
88.364
90.254
90.971
91.837
95.347
99.443
100.000
100.000
100.000
100.000
100.000
100.000
100.000
18,864,637
84.976
89.664
93.269
95.254
96.813
99.353
99.998
100.000
100.000
100.000
100.000
100.000
100.000
54,089,832
98.933
99.643
99.998
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
119,989,839
90.600
93.852
95.661
97.045
98.203
99.552
99.999
100.000
100.000
100.000
100.000
100.000
100.000
29,679,840
63.651
74.057
82.801
89.230
94.022
97.885
99.731
99.923
99.999
100.000
100.000
100.000
100.000
8,200,814
69.487
80.259
87.515
92.511
95.859
98.949
99.991
100.000
100.000
100.000
100.000
100.000
100.000
11,419,775
76.261
86.029
91.934
96.103
98.602
99.958
100.000
100.000
100.000
100.000
100.000
100.000
100.000
6,069,118
73.957
81.969
87.943
91.379
94.206
97.905
99.213
99.976
100.000
100.000
100.000
100.000
100.000
13,441,761
82.299
89.019
93.157
95.770
97.253
99.438
99.998
100.000
100.000
100.000
100.000
100.000
100.000
8,041,980
80.268
86.147
90.140
93.337
95.436
98.519
99.838
99.999
100.000
100.000
100.000
100.000
100.000
5,221,474
97.870
98.732
99.319
99.767
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
131,837,493
90.906
95.297
98.058
99.715
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
22,716,555
84.933
90.099
93.377
95.413
97.687
99.490
99.999
100.000
100.000
100.000
100.000
100.000
100.000
51,090,224
86.017
91.162
94.078
96.297
98.266
99.762
100.000
100.000
100.000
100.000
100.000
100.000
100.000
50,805,474
87.333
91.837
94.566
96.691
98.434
99.761
100.000
100.000
100.000
100.000
100.000
100.000
100.000
53,574,570
87.165
93.402
95.559
97.031
98.175
99.876
100.000
100.000
100.000
100.000
100.000
100.000
100.000
7,111,282
82.673
87.118
91.546
94.283
97.649
99.929
100.000
100.000
100.000
100.000
100.000
100.000
100.000
10,942,868
66.457
76.917
85.857
91.859
96.062
99.010
99.947
100.000
100.000
100.000
100.000
100.000
100.000
6,994,215
76.096
83.453
89.226
92.900
96.285
98.962
99.988
100.000
100.000
100.000
100.000
100.000
100.000
9,385,545
56.132
63.055
69.989
75.915
80.217
84.866
87.747
89.953
95.806
99.953
100.000
100.000
100.000
8,284,179
96.892
97.654
98.997
99.602
99.909
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100,238,178
89.097
92.214
95.288
97.332
99.134
99.997
100.000
100.000
100.000
100.000
100.000
100.000
100.000
64,515,583
95.061
96.714
98.535
99.877
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
38,092,839
90.170
92.601
95.929
97.069
98.899
99.993
100.000
100.000
100.000
100.000
100.000
100.000
100.000
40,515,177
94.845
96.891
98.377
99.879
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
64,654,330
72.401
78.921
84.973
90.531
94.375
97.543
99.794
100.000
100.000
100.000
100.000
100.000
100.000
21,982,588
80.859
86.836
91.579
94.109
95.752
99.001
99.995
100.000
100.000
100.000
100.000
100.000
100.000
24,645,717
83.111
88.051
91.629
94.149
95.830
98.759
99.985
100.000
100.000
100.000
100.000
100.000
100.000
8,554,098
82.105
87.320
90.769
92.009
94.745
96.653
98.163
99.593
99.999
100.000
100.000
100.000
100.000
4,266,549
67.454
74.719
83.195
92.775
96.759
99.533
100.000
100.000
100.000
100.000
100.000
100.000
100.000
13,344,420
87.275
93.391
96.985
98.796
99.675
99.959
99.999
100.000
100.000
100.000
100.000
100.000
100.000
26,391,221
87.680
93.389
96.943
98.667
99.582
99.860
99.891
99.981
100.000
100.000
100.000
100.000
100.000
9,494,519
80.368
88.433
94.106
97.364
99.172
99.855
99.952
99.996
100.000
100.000
100.000
100.000
100.000
5,829,167
77.600
85.447
90.829
94.343
96.746
98.058
98.767
99.056
99.524
99.865
99.939
100.000
100.000
23,727,042
72.703
83.077
90.599
95.194
98.018
99.310
99.787
99.979
100.000
100.000
100.000
100.000
100.000
6,074,724
86.161
92.748
96.018
97.712
98.856
99.387
99.697
99.960
100.000
100.000
100.000
100.000
100.000
11,809,596
86.748
92.801
96.228
98.237
99.429
99.888
99.992
100.000
100.000
100.000
100.000
100.000
100.000
7,853,809
75.723
85.199
90.743
93.722
95.633
96.733
97.360
97.857
98.894
99.771
99.934
100.000
100.000
12,086,089
82.785
90.499
95.213
97.701
98.866
99.286
99.447
99.503
99.586
99.680
99.903
100.000
100.000
30,403,192
Appendix E. Tahoe stormwater particle size distribution data (continued).
147
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SB-AS
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
Sample
DateTime
4/28/03 9:36
5/4/03 3:20
5/8/03 10:08
6/7/03 16:22
6/23/03 11:41
7/22/03 18:11
7/31/03 14:30
8/1/03 16:27
8/1/03 21:57
8/2/03 15:08
8/21/03 7:56
8/21/03 12:24
8/21/03 16:17
8/21/03 19:48
12/6/03 16:21
12/6/03 17:34
12/6/03 19:44
12/7/03 0:41
12/13/03 7:19
12/24/03 4:49
1/8/04 14:05
1/8/04 14:37
1/8/04 15:13
1/8/04 15:52
1/9/04 13:45
1/9/04 18:34
1/11/04 13:23
1/11/04 15:32
1/13/04 13:15
1/13/04 14:40
1/13/04 15:02
1/13/04 16:54
1/15/04 13:22
1/15/04 14:34
1/15/04 17:52
1/17/04 13:59
1/17/04 14:39
1/17/04 16:23
1/27/04 13:57
1/27/04 15:18
1/27/04 16:06
1/27/04 16:35
2/5/04 14:17
2/5/04 16:20
2/5/04 16:33
2/7/04 13:28
2/7/04 16:45
2/16/04 6:48
2/16/04 12:38
2/18/04 7:04
2/18/04 10:52
2/18/04 13:31
2/21/04 18:26
2/21/04 22:24
2/22/04 10:50
2/22/04 14:57
2/23/04 11:47
2/25/04 11:08
2/25/04 14:46
2/28/04 12:48
Turbidity
(NTU)
85.0
40.0
74.0
538.0
292.0
447.0
551.0
296.0
120.0
54.9
89.4
101.0
490.0
124.0
233.0
117.0
77.8
85.2
145.0
326.0
359.0
416.0
389.0
312.0
247.0
106.0
80.9
194.0
70.5
177.0
176.0
134.0
64.8
158.0
81.5
53.5
103.0
122.0
1,597.0
1,204.0
649.0
1,181.0
107.0
242.0
240.0
874.0
351.0
862.0
553.0
168.0
623.0
202.0
212.0
171.0
83.9
265.0
351.0
470.0
599.0
102.0
TSS
(mg/L)
158.0
57.5
135.6
763.8
413.5
630.0
1,067.5
493.6
192.8
50.8
116.8
135.6
760.5
158.4
307.2
147.9
86.8
70.4
81.2
219.5
252.0
278.0
260.5
201.0
206.5
78.8
75.6
144.0
65.2
132.0
134.4
95.2
62.0
104.4
47.5
44.5
72.4
78.5
835.5
629.3
400.4
662.7
90.8
170.0
165.6
645.6
288.2
588.0
638.5
123.2
508.0
202.0
229.0
149.5
75.0
217.5
320.5
387.5
605.0
87.0
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
0.484
2.208
4.853
8.070
11.859
16.660
23.033
31.352
41.524
52.948
64.445
74.866
N
0.119
0.549
1.213
1.990
2.796
3.678
4.831
6.598
9.437
13.895
20.685
30.367
N
0.409
1.921
4.378
7.515
11.185
15.604
21.379
29.344
40.012
53.072
66.844
78.534
N
0.353
1.601
3.468
5.643
8.078
11.083
15.137
20.756
28.218
37.281
46.795
55.165
N
0.167
0.773
1.733
2.925
4.300
5.977
8.227
11.415
15.882
21.831
29.151
37.047
N
2.122
2.925
4.006
5.610
8.112
11.838
16.922
23.233
30.464
38.306
46.382
54.126
N
2.543
3.405
4.441
5.726
7.373
9.537
12.483
16.649
22.518
30.361
39.843
49.585
N
1.941
2.659
3.536
4.615
5.946
7.606
9.749
12.693
16.922
22.992
31.352
41.576
N
1.568
2.228
3.061
4.111
5.452
7.206
9.590
12.993
17.940
24.949
34.264
45.000
N
0.909
1.474
2.206
3.114
4.235
5.684
7.702
10.719
15.344
22.303
32.363
45.417
N
1.492
2.219
3.174
4.455
6.237
8.741
12.230
17.014
23.405
31.608
41.479
52.131
N
1.514
2.180
3.038
4.173
5.728
7.881
10.835
14.832
20.133
26.978
35.486
45.371
N
2.742
3.682
4.828
6.278
8.165
10.625
13.817
18.006
23.556
30.845
40.033
50.370
N
1.401
2.027
2.826
3.846
5.158
6.862
9.115
12.188
16.470
22.417
30.438
40.286
N
2.356
3.411
4.754
6.463
8.659
11.512
15.292
20.443
27.509
36.903
48.432
60.368
N
2.090
3.177
4.631
6.559
9.096
12.358
16.456
21.573
28.017
36.172
46.330
58.064
N
1.942
2.995
4.402
6.266
8.732
11.954
16.083
21.296
27.818
35.910
45.786
57.155
N
2.158
3.573
5.454
7.882
11.002
15.007
20.119
26.595
34.681
44.525
56.019
68.360
N
2.611
4.627
7.077
9.840
13.070
17.298
23.239
31.506
42.171
54.576
67.089
77.560
N
3.105
4.899
7.052
9.581
12.698
16.805
22.396
29.966
39.767
51.574
64.235
75.623
N
6.068
10.259
15.453
21.814
29.824
39.658
50.781
62.448
73.802
83.809
91.042
95.343
N
6.464
10.727
15.955
22.338
30.401
40.297
51.412
62.943
74.038
83.773
90.926
95.352
N
2.902
5.223
8.220
11.985
16.940
23.686
32.647
43.788
56.449
69.417
80.779
89.041
N
4.957
8.349
12.494
17.618
24.491
33.823
45.482
58.322
70.616
81.001
88.847
94.471
N
4.137
6.417
9.307
13.053
18.153
25.101
34.128
45.071
57.266
69.603
80.430
88.495
N
3.505
6.587
10.545
15.262
20.931
28.047
37.076
48.186
60.884
73.859
84.773
91.855
N
1.934
3.850
5.735
7.660
10.639
15.164
21.174
29.696
41.519
56.026
70.151
82.540
N
2.943
4.984
7.579
10.780
14.857
20.308
27.723
37.565
49.725
63.234
75.999
85.894
N
2.937
4.656
6.828
9.533
13.023
17.751
24.322
33.349
45.034
58.697
72.162
82.417
N
3.662
6.511
10.201
14.836
20.831
28.751
38.962
51.336
64.854
77.595
87.071
92.836
N
4.453
8.193
13.078
19.270
27.282
37.399
49.145
61.489
73.145
82.895
89.706
94.070
N
4.111
7.837
12.681
18.599
25.914
35.092
46.221
58.791
71.516
82.620
90.343
95.021
N
2.752
4.362
6.440
9.119
12.711
17.684
24.573
33.800
45.340
58.426
71.070
80.723
N
2.507
4.144
6.170
8.588
11.587
15.649
21.537
30.142
41.950
56.428
71.269
82.951
N
3.333
5.493
8.013
10.791
14.077
18.653
25.659
36.136
50.131
66.097
80.427
89.676
N
2.669
4.624
7.178
10.375
14.414
19.697
26.776
36.212
48.181
61.976
75.241
84.737
N
2.631
4.626
7.160
10.263
14.268
19.856
27.854
38.848
52.560
67.482
80.606
89.382
N
3.379
6.260
9.907
14.230
19.510
26.407
35.601
47.356
60.906
74.306
84.680
90.986
N
7.239
9.908
13.006
16.866
22.045
28.859
37.279
47.171
57.898
68.360
77.200
84.236
N
7.424
9.887
12.727
16.199
20.651
26.200
32.792
40.591
49.727
60.081
70.839
80.651
N
4.434
6.297
8.525
11.236
14.681
19.164
25.010
32.632
42.365
54.210
67.278
79.355
N
7.602
10.723
14.470
19.250
25.675
33.937
43.666
54.355
65.231
75.460
84.127
90.840
N
2.699
4.006
5.588
7.473
9.823
13.026
17.741
24.855
35.088
48.480
63.637
77.216
N
3.294
5.459
8.215
11.672
16.155
22.118
29.983
39.999
51.888
64.641
76.358
85.478
N
1.416
2.458
3.712
5.177
7.012
9.447
12.706
17.116
23.030
30.557
39.008
47.420
N
8.375
11.003
14.103
18.066
23.370
30.148
38.236
47.582
57.949
68.735
78.655
86.619
N
4.266
6.210
8.594
11.575
15.484
20.735
27.724
36.721
47.527
59.299
70.486
79.915
N
6.821
9.066
11.778
15.293
20.032
26.203
33.794
42.814
53.076
64.034
74.479
83.171
N
5.206
7.011
9.237
12.105
15.877
20.718
26.751
34.237
43.403
54.114
65.281
74.950
N
2.081
3.415
5.058
6.994
9.323
12.331
16.482
22.404
30.658
41.406
53.893
66.094
N
5.336
7.628
10.525
14.228
18.979
24.897
32.013
40.517
50.662
62.348
74.237
83.756
N
3.070
4.961
7.362
10.328
14.014
18.634
24.425
31.704
40.758
51.588
63.342
73.947
N
2.518
3.481
4.629
6.002
7.702
9.965
13.251
18.308
25.976
36.798
50.349
64.197
N
2.814
4.231
5.943
7.987
10.552
14.039
19.042
26.235
35.980
47.964
60.797
72.438
N
2.186
3.172
4.335
5.662
7.216
9.242
12.256
17.085
24.636
35.505
49.425
64.249
N
3.238
4.754
6.629
8.935
11.845
15.671
20.905
28.231
38.191
50.693
64.339
76.475
N
3.933
5.504
7.464
9.957
13.196
17.424
22.958
30.280
39.859
51.755
64.952
77.053
N
5.280
7.473
10.233
13.828
18.615
24.793
32.373
41.377
51.716
62.907
73.567
82.112
N
4.965
6.678
8.791
11.512
15.089
19.687
25.425
32.552
41.329
51.773
63.110
73.607
N
3.139
4.659
6.545
8.859
11.775
15.642
21.017
28.625
39.021
52.155
66.759
79.958
Appendix E. Tahoe stormwater particle size distribution data (continued).
148
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SB-AS
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
Sample
DateTime
4/28/03 9:36
5/4/03 3:20
5/8/03 10:08
6/7/03 16:22
6/23/03 11:41
7/22/03 18:11
7/31/03 14:30
8/1/03 16:27
8/1/03 21:57
8/2/03 15:08
8/21/03 7:56
8/21/03 12:24
8/21/03 16:17
8/21/03 19:48
12/6/03 16:21
12/6/03 17:34
12/6/03 19:44
12/7/03 0:41
12/13/03 7:19
12/24/03 4:49
1/8/04 14:05
1/8/04 14:37
1/8/04 15:13
1/8/04 15:52
1/9/04 13:45
1/9/04 18:34
1/11/04 13:23
1/11/04 15:32
1/13/04 13:15
1/13/04 14:40
1/13/04 15:02
1/13/04 16:54
1/15/04 13:22
1/15/04 14:34
1/15/04 17:52
1/17/04 13:59
1/17/04 14:39
1/17/04 16:23
1/27/04 13:57
1/27/04 15:18
1/27/04 16:06
1/27/04 16:35
2/5/04 14:17
2/5/04 16:20
2/5/04 16:33
2/7/04 13:28
2/7/04 16:45
2/16/04 6:48
2/16/04 12:38
2/18/04 7:04
2/18/04 10:52
2/18/04 13:31
2/21/04 18:26
2/21/04 22:24
2/22/04 10:50
2/22/04 14:57
2/23/04 11:47
2/25/04 11:08
2/25/04 14:46
2/28/04 12:48
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
83.694
90.828
95.487
98.131
99.443
99.838
99.901
99.969
100.000
100.000
100.000
100.000
100.000
19,586,353
42.470
55.118
66.707
77.299
86.694
95.947
98.750
99.400
99.990
100.000
100.000
100.000
100.000
1,746,727
86.788
92.150
95.154
97.084
98.366
99.182
99.760
99.993
100.000
100.000
100.000
100.000
100.000
15,296,495
61.660
67.083
72.104
78.726
89.143
94.194
95.354
96.655
97.850
98.848
99.101
99.783
100.000
66,818,046
44.500
51.209
59.679
70.386
78.832
84.154
87.258
89.852
92.682
95.022
96.960
99.268
100.000
18,357,577
60.910
67.379
75.927
84.651
88.796
90.738
92.599
93.518
94.954
96.922
98.314
99.668
100.000
37,182,126
58.468
66.596
74.382
81.530
86.878
90.600
92.962
94.478
96.155
97.340
97.851
99.078
100.000
60,006,395
52.299
62.376
71.303
79.301
86.067
91.067
93.725
95.182
96.754
97.845
98.190
99.171
100.000
23,092,044
55.569
65.144
73.259
79.955
84.983
88.397
90.416
91.793
93.486
94.864
96.542
99.861
100.000
8,507,420
59.693
72.912
83.195
90.467
95.207
97.751
98.713
99.124
99.667
99.993
100.000
100.000
100.000
1,932,295
62.742
72.690
80.627
86.889
91.670
94.966
96.627
97.577
98.781
99.652
99.891
100.000
100.000
5,928,263
56.351
67.967
78.085
85.841
91.368
94.840
96.816
98.007
99.244
99.978
100.000
100.000
100.000
6,209,579
60.560
69.987
78.182
85.013
90.050
93.401
95.327
96.511
97.865
98.761
98.917
99.498
100.000
47,059,032
50.840
60.721
68.668
74.961
79.877
83.529
86.187
88.492
91.434
94.267
96.379
99.063
100.000
6,677,742
70.618
78.672
84.612
89.295
92.885
95.387
96.990
97.851
98.875
99.623
99.777
99.998
100.000
21,772,620
70.015
80.107
86.670
90.847
93.783
95.661
96.651
97.237
98.123
99.036
99.705
100.000
100.000
11,138,470
68.783
78.734
85.806
90.692
94.103
96.311
97.693
98.494
99.294
99.949
100.000
100.000
100.000
6,341,841
79.770
87.976
92.735
95.571
97.393
98.630
99.385
99.939
100.000
100.000
100.000
100.000
100.000
6,829,898
84.652
88.805
91.286
93.321
95.139
96.659
98.016
99.726
100.000
100.000
100.000
100.000
100.000
10,459,050
84.133
89.742
93.209
95.759
97.575
98.603
99.087
99.309
99.726
99.995
100.000
100.000
100.000
25,297,889
97.169
98.223
98.853
99.237
99.578
99.842
99.987
100.000
100.000
100.000
100.000
100.000
100.000
68,907,269
97.235
98.380
98.993
99.367
99.598
99.809
99.994
100.000
100.000
100.000
100.000
100.000
100.000
76,944,649
94.025
97.014
98.285
98.812
99.526
99.862
99.981
100.000
100.000
100.000
100.000
100.000
100.000
40,872,126
97.209
98.499
99.047
99.422
99.761
99.882
99.963
100.000
100.000
100.000
100.000
100.000
100.000
44,777,836
93.388
96.283
97.754
98.648
99.423
99.847
99.944
99.981
100.000
100.000
100.000
100.000
100.000
31,842,585
95.394
97.222
98.340
99.211
99.705
99.941
100.000
100.000
100.000
100.000
100.000
100.000
100.000
16,013,418
90.453
95.494
97.449
99.256
99.714
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
8,598,187
92.399
96.224
98.125
99.201
99.658
99.886
99.998
100.000
100.000
100.000
100.000
100.000
100.000
19,607,342
88.789
92.644
95.028
96.926
98.451
99.430
99.897
99.999
100.000
100.000
100.000
100.000
100.000
7,492,053
95.791
97.387
98.290
98.971
99.484
99.823
99.991
100.000
100.000
100.000
100.000
100.000
100.000
25,355,920
96.089
97.293
98.073
98.737
99.469
99.852
99.994
100.000
100.000
100.000
100.000
100.000
100.000
33,925,664
97.260
98.397
99.006
99.481
99.854
99.991
100.000
100.000
100.000
100.000
100.000
100.000
100.000
23,642,203
86.959
91.235
94.275
96.513
98.287
99.429
99.964
100.000
100.000
100.000
100.000
100.000
100.000
6,813,582
90.238
94.504
97.023
98.527
99.429
99.800
99.909
99.975
100.000
100.000
100.000
100.000
100.000
11,202,595
94.512
96.790
97.648
98.549
99.406
99.869
99.999
100.000
100.000
100.000
100.000
100.000
100.000
6,452,922
90.218
93.662
95.714
97.265
98.418
99.292
99.932
100.000
100.000
100.000
100.000
100.000
100.000
5,882,097
94.132
96.654
98.064
98.814
99.466
99.836
99.989
100.000
100.000
100.000
100.000
100.000
100.000
9,660,054
94.100
95.520
96.418
97.363
98.632
99.641
99.984
100.000
100.000
100.000
100.000
100.000
100.000
14,858,315
89.144
92.660
94.707
95.924
96.770
97.228
97.490
97.622
98.057
98.583
99.140
99.970
100.000
143,371,548
88.379
94.090
97.306
98.926
99.732
99.987
100.000
100.000
100.000
100.000
100.000
100.000
100.000
98,409,517
88.560
94.780
97.895
99.186
99.809
99.993
100.000
100.000
100.000
100.000
100.000
100.000
100.000
48,221,557
94.989
97.692
98.928
99.473
99.841
99.984
100.000
100.000
100.000
100.000
100.000
100.000
100.000
135,252,452
86.755
92.464
95.389
97.122
98.301
98.968
99.430
99.930
100.000
100.000
100.000
100.000
100.000
7,715,596
91.727
95.767
97.866
98.969
99.664
99.933
99.996
100.000
100.000
100.000
100.000
100.000
100.000
24,657,084
53.925
58.315
63.064
70.210
83.981
96.824
99.937
100.000
100.000
100.000
100.000
100.000
100.000
11,100,477
92.196
96.110
98.117
99.158
99.739
99.963
100.000
100.000
100.000
100.000
100.000
100.000
100.000
110,160,030
87.495
93.332
96.694
98.541
99.605
99.981
100.000
100.000
100.000
100.000
100.000
100.000
100.000
36,956,220
89.380
93.950
96.926
98.617
99.512
99.920
99.999
100.000
100.000
100.000
100.000
100.000
100.000
87,026,724
82.209
87.827
91.943
94.974
97.062
98.313
98.958
99.235
99.708
99.996
100.000
100.000
100.000
76,440,074
76.519
84.868
90.703
94.596
97.157
98.438
98.948
99.216
99.677
99.971
99.999
100.000
100.000
10,666,903
89.876
93.987
96.572
98.257
99.299
99.823
99.994
100.000
100.000
100.000
100.000
100.000
100.000
77,625,807
81.914
87.603
91.336
94.003
96.060
97.403
98.191
98.694
99.339
99.944
100.000
100.000
100.000
25,309,847
76.282
86.633
93.455
96.941
98.865
99.739
99.991
100.000
100.000
100.000
100.000
100.000
100.000
14,239,491
82.289
90.046
94.683
97.472
99.162
99.874
99.999
100.000
100.000
100.000
100.000
100.000
100.000
13,754,780
77.276
86.966
92.699
96.093
98.437
99.609
99.918
99.985
100.000
100.000
100.000
100.000
100.000
4,692,060
85.826
92.383
95.870
97.855
99.243
99.880
99.997
100.000
100.000
100.000
100.000
100.000
100.000
21,710,050
86.313
92.660
96.167
98.124
99.354
99.917
99.999
100.000
100.000
100.000
100.000
100.000
100.000
33,533,498
88.039
92.301
95.140
97.077
98.342
99.023
99.340
99.462
99.727
99.990
100.000
100.000
100.000
57,040,591
82.095
88.715
93.139
95.968
97.684
98.637
99.081
99.191
99.659
99.995
100.000
100.000
100.000
68,758,810
89.390
94.662
97.035
98.412
99.290
99.864
99.999
100.000
100.000
100.000
100.000
100.000
100.000
8,718,637
Appendix E. Tahoe stormwater particle size distribution data (continued).
149
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-AS
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASCR
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-ASC
SB-ASC
Sample
DateTime
2/28/04 15:21
2/28/04 16:32
2/29/04 13:27
3/1/04 12:50
3/1/04 14:42
3/3/04 13:04
3/3/04 16:11
3/4/04 12:51
3/4/04 16:25
3/6/04 11:27
3/10/04 12:22
4/20/04 3:43
4/20/04 3:55
5/10/04 10:27
5/10/04 10:37
5/11/04 0:54
5/11/04 2:15
6/9/04 8:40
9/20/04 11:21
10/17/04 18:39
10/17/04 20:27
9/26/05 21:12
9/27/05 0:28
11/30/05 23:15
12/1/05 3:46
12/1/05 7:25
12/1/05 7:25
12/1/05 9:23
12/1/05 12:04
12/1/05 16:57
12/18/05 12:57
12/18/05 14:50
12/18/05 18:19
12/19/05 0:40
12/19/05 5:33
12/19/05 10:38
12/30/05 8:44
12/30/05 11:26
12/30/05 15:07
12/31/05 0:01
12/31/05 10:44
1/30/06 3:15
1/30/06 11:10
2/26/06 18:24
2/27/06 5:25
2/27/06 11:56
2/27/06 22:47
3/29/06 11:29
4/1/06 10:51
4/3/06 2:04
4/3/06 12:00
4/4/06 8:19
4/4/06 10:13
4/4/06 11:27
4/4/06 12:25
4/4/06 16:52
4/4/06 16:52
4/4/06 17:29
4/25/06 17:09
4/25/06 18:29
Turbidity
(NTU)
142.0
121.0
41.5
22.4
610.0
38.3
57.5
65.1
52.4
69.5
37.8
195.0
273.0
825.0
573.0
112.0
72.0
137.0
276.0
73.8
122.0
481.0
77.6
79.7
160.0
107.0
107.0
65.1
82.1
55.7
13.8
242.0
110.0
62.2
50.5
44.4
126.0
300.0
115.0
57.5
56.1
427.0
394.0
932.0
218.0
235.2
60.8
393.0
403.0
180.0
95.5
164.0
158.0
109.0
49.2
223.0
313.0
171.0
473.0
356.0
TSS
(mg/L)
127.5
118.5
33.2
22.4
412.0
29.2
34.0
54.8
39.2
56.5
25.2
211.2
295.0
895.1
598.7
132.0
67.5
133.2
378.5
118.4
224.8
926.5
69.5
62.4
240.0
140.4
158.8
70.8
106.4
78.4
15.2
258.0
110.4
68.8
42.0
36.4
154.0
267.0
172.0
95.6
52.0
315.5
341.5
757.0
166.0
187.0
66.1
368.0
406.0
214.0
87.0
196.5
208.5
120.0
45.0
231.5
312.0
168.0
733.0
617.0
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
2.901
4.210
5.816
7.774
10.247
13.567
18.288
25.166
34.834
47.344
61.514
74.590
N
2.759
3.977
5.454
7.205
9.306
12.011
15.881
21.867
31.047
44.098
60.397
76.386
N
1.920
3.201
4.757
6.525
8.564
11.197
15.062
21.073
30.071
42.367
57.125
71.664
N
1.280
2.180
3.173
4.245
5.594
7.372
9.715
13.291
19.277
28.921
42.793
59.475
N
7.165
10.242
13.910
18.536
24.754
32.913
42.879
54.296
66.256
77.383
86.169
92.482
N
1.476
2.866
4.356
5.856
7.799
10.534
14.319
20.180
29.369
42.589
58.564
74.523
N
0.969
2.133
3.389
4.627
6.274
8.677
11.960
17.000
25.435
38.814
56.538
75.041
N
2.283
3.640
5.345
7.422
10.014
13.467
18.359
25.437
35.285
47.917
62.154
75.200
N
1.504
2.917
4.495
6.149
8.275
11.270
15.403
21.509
30.626
43.190
57.914
72.069
N
2.487
3.713
5.206
6.979
9.146
12.006
16.088
22.132
30.853
42.604
56.815
71.038
N
1.126
2.221
3.425
4.623
6.089
8.118
10.943
15.358
22.659
34.110
49.597
66.231
N
0.592
1.427
2.850
4.961
7.727
11.078
15.144
20.393
27.448
36.796
48.718
61.767
N
0.719
1.644
3.173
5.383
8.214
11.591
15.694
21.115
28.653
38.829
51.360
64.133
N
0.593
1.539
3.217
5.753
9.093
13.133
18.044
24.410
32.874
43.601
56.050
68.649
N
0.509
1.436
3.167
5.882
9.544
13.975
19.171
25.458
33.235
42.507
52.648
62.303
N
0.609
1.360
2.599
4.411
6.798
9.762
13.478
18.392
25.065
33.918
45.040
57.318
N
0.455
1.135
2.319
4.104
6.468
9.330
12.737
16.973
22.466
29.692
39.386
51.036
N
0.384
0.925
1.855
3.244
5.070
7.258
9.816
12.939
16.993
22.435
29.791
38.735
N
0.170
0.418
0.898
1.750
3.108
4.965
7.147
9.375
11.429
13.303
15.416
18.273
N
0.209
0.559
1.199
2.203
3.594
5.367
7.613
10.591
14.681
20.245
27.546
36.102
N
0.351
0.835
1.667
2.920
4.608
6.720
9.363
12.849
17.668
24.377
33.468
44.241
N
0.343
1.159
2.825
5.578
9.368
13.891
18.901
24.409
30.508
37.194
44.742
52.920
N
0.327
0.843
1.784
3.283
5.397
8.079
11.247
14.807
18.684
22.986
28.425
35.611
N
0.456
1.448
3.378
6.406
10.321
14.695
19.385
24.749
31.105
38.299
46.054
51.912
N
0.633
1.506
2.978
5.136
7.904
11.157
14.940
19.581
25.515
33.008
42.009
51.454
N
0.462
1.280
2.781
5.085
8.090
11.585
15.559
20.375
26.544
34.338
43.725
53.497
N
0.703
1.707
3.430
5.990
9.335
13.336
18.038
23.770
30.929
39.583
49.201
58.377
N
0.516
1.475
3.247
5.954
9.429
13.362
17.668
22.659
28.723
35.947
44.347
52.847
N
0.574
1.398
2.808
4.883
7.541
10.623
14.122
18.312
23.617
30.373
38.736
47.882
N
0.481
1.261
2.645
4.719
7.379
10.438
13.870
17.944
23.019
29.347
37.338
46.773
N
0.307
0.726
1.460
2.723
4.705
7.245
9.946
12.914
16.531
19.449
21.690
26.957
N
0.360
1.418
3.710
7.566
12.782
18.715
24.926
31.540
38.606
45.377
51.445
57.234
N
0.459
1.571
3.831
7.495
12.323
17.670
23.020
28.369
33.861
39.352
44.925
49.995
N
0.572
1.772
4.095
7.771
12.608
18.110
23.937
30.192
37.113
44.613
52.338
59.003
N
0.429
1.474
3.602
7.032
11.486
16.332
21.252
26.606
32.535
38.386
44.776
51.915
N
0.507
1.747
4.271
8.319
13.482
18.899
24.142
29.751
35.959
41.712
47.434
52.950
N
0.600
1.797
4.015
7.330
11.381
15.670
20.085
25.026
30.854
37.480
44.605
51.090
N
0.545
1.814
4.357
8.448
13.852
19.943
26.263
32.839
39.743
46.566
53.152
59.493
N
0.505
1.425
3.123
5.741
9.177
13.185
17.679
22.856
28.956
35.981
43.864
52.003
N
0.418
1.116
2.369
4.266
6.727
9.589
12.822
16.613
21.189
26.709
33.578
41.566
N
0.698
1.767
3.660
6.580
10.513
14.728
18.398
22.347
27.483
32.357
38.127
44.052
N
0.601
2.513
6.673
13.432
21.919
30.614
38.799
46.954
54.925
61.246
66.281
69.706
N
0.525
1.888
4.715
9.344
15.493
22.410
29.580
37.116
45.117
52.870
59.481
64.269
N
0.426
1.426
3.436
6.680
11.002
16.012
21.576
28.087
35.949
44.788
53.552
61.345
N
0.501
1.543
3.550
6.700
10.807
15.463
20.471
26.062
32.497
39.598
47.269
55.414
N
0.514
1.457
3.195
5.863
9.323
13.302
17.719
22.852
29.015
36.155
44.034
52.105
N
0.422
1.278
2.902
5.412
8.623
12.172
15.884
19.961
24.659
30.032
36.317
42.557
N
0.826
2.618
6.147
11.837
19.505
28.431
37.964
47.935
58.364
68.666
77.279
82.274
N
0.536
2.187
5.838
12.114
20.901
31.429
43.075
55.736
69.207
82.350
93.588
99.475
N
0.666
2.096
4.883
9.311
15.176
21.942
29.269
37.259
46.093
55.542
65.150
73.692
N
0.606
1.941
4.574
8.784
14.346
20.632
27.166
33.974
41.156
48.346
55.230
61.012
N
0.546
1.864
4.535
8.851
14.561
21.025
27.842
35.172
43.142
51.158
58.759
66.001
N
0.548
1.692
3.897
7.365
11.915
17.150
22.934
29.596
37.360
45.773
54.190
62.082
N
0.570
1.735
3.957
7.417
11.891
16.926
22.352
28.501
35.659
43.562
51.909
59.563
N
0.601
1.730
3.904
7.292
11.567
16.070
20.479
25.190
30.372
35.310
40.560
45.056
N
0.440
1.635
4.172
8.408
14.138
20.668
27.465
34.580
42.033
49.064
54.982
59.626
N
0.454
1.581
3.912
7.777
13.056
19.230
25.915
33.158
40.880
48.424
55.418
61.331
N
0.426
1.475
3.625
7.145
11.883
17.369
23.305
29.788
36.803
43.888
50.994
57.974
N
0.552
1.406
2.895
5.111
7.971
11.355
15.377
20.480
27.091
35.131
43.860
52.009
N
0.539
1.406
2.943
5.259
8.267
11.800
15.883
20.862
27.185
35.035
44.213
53.573
Appendix E. Tahoe stormwater particle size distribution data (continued).
150
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-AS
SB-AS
SB-ASC
SB-AS
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASCR
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-AS
SB-ASC
SB-ASC
Sample
DateTime
2/28/04 15:21
2/28/04 16:32
2/29/04 13:27
3/1/04 12:50
3/1/04 14:42
3/3/04 13:04
3/3/04 16:11
3/4/04 12:51
3/4/04 16:25
3/6/04 11:27
3/10/04 12:22
4/20/04 3:43
4/20/04 3:55
5/10/04 10:27
5/10/04 10:37
5/11/04 0:54
5/11/04 2:15
6/9/04 8:40
9/20/04 11:21
10/17/04 18:39
10/17/04 20:27
9/26/05 21:12
9/27/05 0:28
11/30/05 23:15
12/1/05 3:46
12/1/05 7:25
12/1/05 7:25
12/1/05 9:23
12/1/05 12:04
12/1/05 16:57
12/18/05 12:57
12/18/05 14:50
12/18/05 18:19
12/19/05 0:40
12/19/05 5:33
12/19/05 10:38
12/30/05 8:44
12/30/05 11:26
12/30/05 15:07
12/31/05 0:01
12/31/05 10:44
1/30/06 3:15
1/30/06 11:10
2/26/06 18:24
2/27/06 5:25
2/27/06 11:56
2/27/06 22:47
3/29/06 11:29
4/1/06 10:51
4/3/06 2:04
4/3/06 12:00
4/4/06 8:19
4/4/06 10:13
4/4/06 11:27
4/4/06 12:25
4/4/06 16:52
4/4/06 16:52
4/4/06 17:29
4/25/06 17:09
4/25/06 18:29
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
84.636
91.524
95.566
97.960
99.421
99.952
100.000
100.000
100.000
100.000
100.000
100.000
100.000
10,957,780
87.952
94.493
97.460
98.842
99.643
99.937
99.980
99.993
100.000
100.000
100.000
100.000
100.000
9,330,176
83.061
90.158
93.801
95.775
97.935
99.502
99.988
100.000
100.000
100.000
100.000
100.000
100.000
2,722,160
75.406
87.368
93.676
96.578
98.954
99.704
99.990
100.000
100.000
100.000
100.000
100.000
100.000
1,237,359
95.861
97.767
98.737
99.272
99.664
99.931
99.998
100.000
100.000
100.000
100.000
100.000
100.000
82,597,952
86.706
94.224
97.465
98.682
99.502
99.744
99.977
100.000
100.000
100.000
100.000
100.000
100.000
2,447,362
88.384
95.619
97.880
99.612
99.779
99.971
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,393,599
84.831
90.865
94.087
96.250
98.170
99.513
99.979
100.000
100.000
100.000
100.000
100.000
100.000
4,924,965
82.879
90.170
94.345
96.805
99.161
99.919
100.000
100.000
100.000
100.000
100.000
100.000
100.000
3,413,168
82.415
90.014
94.326
96.988
98.765
99.759
99.998
100.000
100.000
100.000
100.000
100.000
100.000
4,495,413
79.808
88.519
93.294
95.892
98.706
99.675
99.998
100.000
100.000
100.000
100.000
100.000
100.000
1,671,136
70.713
77.082
82.429
86.534
89.317
91.370
95.920
98.279
99.427
99.993
100.000
100.000
100.000
14,138,451
74.857
82.634
87.412
90.908
94.125
97.285
98.994
99.679
99.996
100.000
100.000
100.000
100.000
21,316,069
79.052
87.093
91.441
93.764
96.831
98.848
99.564
99.920
100.000
100.000
100.000
100.000
100.000
69,756,417
71.096
77.600
81.830
86.545
90.239
93.699
95.450
95.843
97.784
99.972
100.000
100.000
100.000
47,614,679
68.839
78.670
83.981
87.232
90.574
93.111
95.091
96.366
98.349
99.981
100.000
100.000
100.000
7,806,452
60.576
67.888
73.649
76.477
79.249
81.413
83.411
85.799
88.865
93.381
98.485
100.000
100.000
3,738,615
47.739
55.953
64.928
73.700
77.877
80.655
82.004
82.813
84.602
87.140
90.449
97.084
100.000
5,804,346
20.350
22.518
28.158
34.640
39.008
42.536
47.015
50.865
56.547
67.145
81.892
99.360
100.000
8,806,998
44.627
53.571
61.784
69.699
77.269
84.679
89.987
92.481
96.031
99.098
99.990
100.000
100.000
3,550,378
54.463
63.967
71.705
76.996
81.786
86.579
90.327
93.604
97.294
99.455
99.988
100.000
100.000
8,859,415
59.773
67.045
74.383
81.827
86.218
90.541
96.385
99.736
100.000
100.000
100.000
100.000
100.000
69,342,772
42.991
50.919
59.526
67.991
74.742
81.443
88.708
94.384
97.988
99.759
100.000
100.000
100.000
3,071,534
54.904
58.388
62.239
65.721
69.601
74.210
79.434
90.366
98.954
99.999
100.000
100.000
100.000
5,371,150
59.325
65.828
71.237
76.766
81.923
86.539
90.120
95.613
99.717
100.000
100.000
100.000
100.000
16,550,435
61.474
67.765
71.927
76.284
80.216
83.488
86.738
90.816
97.214
99.966
100.000
100.000
100.000
9,630,837
65.742
71.308
75.558
80.234
84.192
87.358
90.968
95.993
99.548
100.000
100.000
100.000
100.000
12,803,788
58.221
63.720
68.167
72.083
76.289
81.111
86.136
92.690
98.478
99.919
100.000
100.000
100.000
5,683,804
55.597
61.763
67.034
72.183
76.879
80.909
85.024
90.641
97.420
99.909
100.000
100.000
100.000
6,980,920
54.550
61.053
67.040
71.908
76.111
79.909
84.353
89.402
97.164
99.941
100.000
100.000
100.000
4,985,924
27.898
33.473
35.854
39.946
44.494
49.454
56.393
76.056
97.254
99.999
100.000
100.000
100.000
552,818
59.543
63.213
66.894
69.871
72.936
76.049
79.579
85.322
94.972
99.954
100.000
100.000
100.000
25,916,916
52.349
56.171
59.665
62.342
65.333
68.278
72.041
79.658
91.610
99.300
100.000
100.000
100.000
11,024,298
62.920
67.602
71.560
74.770
77.570
80.752
84.319
90.604
97.968
99.991
100.000
100.000
100.000
7,175,070
54.365
58.948
62.641
65.229
69.148
72.818
77.282
86.245
97.782
99.996
100.000
100.000
100.000
3,933,419
54.778
58.932
61.847
63.886
66.937
70.790
75.527
86.997
98.423
99.995
100.000
100.000
100.000
4,017,916
55.732
61.887
67.165
72.798
77.706
82.951
87.413
95.659
99.941
100.000
100.000
100.000
100.000
15,207,484
61.061
64.074
66.734
68.571
70.029
72.003
75.210
82.858
94.142
99.678
100.000
100.000
100.000
30,172,151
57.641
62.248
66.529
70.050
72.968
75.680
79.132
84.120
94.551
99.742
100.000
100.000
100.000
13,323,422
47.356
53.475
59.559
64.725
69.494
73.235
77.750
82.210
91.908
98.833
99.977
100.000
100.000
5,501,611
47.181
53.161
56.526
60.309
63.433
66.261
70.468
79.828
92.627
99.450
100.000
100.000
100.000
4,550,784
69.981
71.058
71.598
71.802
73.756
76.402
79.672
90.266
98.832
99.995
100.000
100.000
100.000
55,867,173
66.230
69.364
71.726
73.257
75.501
77.332
80.642
88.929
98.264
99.998
100.000
100.000
100.000
42,544,071
67.439
71.685
75.296
78.602
81.224
84.150
87.589
91.908
98.374
99.995
100.000
100.000
100.000
67,955,168
61.214
66.536
71.477
75.560
78.894
81.935
85.537
89.518
97.404
99.989
100.000
100.000
100.000
14,951,050
58.335
63.675
68.641
72.577
75.771
78.783
82.365
87.370
96.395
99.947
100.000
100.000
100.000
14,787,344
46.560
51.895
55.905
59.633
62.460
66.274
70.674
81.624
95.373
99.741
100.000
100.000
100.000
4,807,575
85.565
89.639
92.130
94.030
95.783
96.595
98.845
99.990
100.000
100.000
100.000
100.000
100.000
58,433,692
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
65,513,856
77.416
82.128
86.311
88.936
91.111
92.948
94.682
97.157
99.182
99.994
100.000
100.000
100.000
26,790,848
62.961
66.921
69.672
71.833
74.481
76.912
80.935
89.042
98.052
99.995
100.000
100.000
100.000
10,231,191
68.591
71.875
75.151
77.248
79.068
81.493
84.832
90.144
97.752
99.990
100.000
100.000
100.000
23,270,402
65.914
69.316
72.867
74.726
76.330
78.305
80.945
85.642
94.836
99.952
100.000
100.000
100.000
20,678,984
62.134
66.008
69.074
71.243
72.791
74.986
78.201
83.363
94.778
99.960
100.000
100.000
100.000
11,970,618
46.336
49.558
51.482
52.616
54.180
55.945
59.006
69.884
90.927
99.739
100.000
100.000
100.000
4,341,146
61.361
64.344
66.403
67.556
68.792
70.353
73.452
79.790
93.330
99.944
100.000
100.000
100.000
25,881,983
62.949
66.218
68.694
70.467
72.232
74.346
77.722
84.391
95.923
99.977
100.000
100.000
100.000
32,434,599
60.434
64.185
67.528
69.847
71.836
74.207
77.531
83.201
94.458
99.953
100.000
100.000
100.000
16,066,143
58.692
63.936
67.612
71.163
74.074
76.954
81.802
87.451
93.232
97.951
99.958
100.000
100.000
50,646,102
61.182
67.879
73.672
78.553
83.056
86.670
91.268
96.692
99.401
99.998
100.000
100.000
100.000
43,797,855
Appendix E. Tahoe stormwater particle size distribution data (continued).
151
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASCR
SB-ASC
SB-GS
SB-MS
SB-MSR
SB-ASCR
SB-ASC
SB-ASC
SB-ASCR
SB-ASCR
SB-ASC
SB-ASCR
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-GS
SB-ASC
SB-ASC
SB-GS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-GS
SB-ASC
SB-ASC
SB-ASC
Sample
DateTime
6/27/06 19:05
7/21/06 19:39
10/5/06 10:35
10/5/06 11:45
11/2/06 17:54
11/3/06 14:09
11/13/06 16:50
11/13/06 21:36
11/14/06 1:12
12/26/06 20:58
12/26/06 20:58
12/26/06 21:05
12/26/06 21:06
12/26/06 21:07
12/26/06 22:18
12/26/06 22:18
12/26/06 23:24
12/26/06 23:24
1/4/07 1:29
1/4/07 1:29
1/4/07 5:46
1/4/07 5:46
2/8/07 21:06
2/8/07 21:57
2/9/07 2:17
2/9/07 8:34
2/10/07 9:45
2/10/07 18:53
2/11/07 3:31
2/11/07 10:02
2/11/07 12:04
3/6/07 12:02
3/6/07 13:17
3/6/07 14:47
3/6/07 14:48
3/6/07 14:49
3/6/07 15:39
4/22/07 10:11
4/22/07 13:25
8/31/07 8:45
9/22/07 7:54
9/22/07 8:35
9/22/07 9:12
10/19/07 21:10
10/19/07 21:22
10/19/07 22:20
10/29/07 16:03
10/29/07 16:23
10/29/07 16:36
1/4/08 6:06
1/4/08 8:50
1/4/08 12:26
1/4/08 14:46
2/25/08 11:51
2/25/08 18:40
2/25/08 18:41
2/25/08 18:42
2/26/08 11:47
3/13/08 1:30
5/20/08 19:21
Turbidity
(NTU)
263.0
227.0
233.0
108.0
77.3
77.2
106.0
46.2
22.4
590.0
543.0
489.0
453.0
512.0
485.0
523.0
221.0
218.0
251.0
258.0
144.0
122.0
433.0
178.0
150.0
192.0
190.0
359.0
107.0
277.0
179.0
86.3
128.0
105.0
92.4
89.0
67.6
283.0
98.5
2,280.0
170.0
108.0
56.6
393.0
120.0
47.2
399.0
263.0
137.0
442.0
260.0
308.0
225.0
492.0
248.0
241.0
237.0
218.0
568.0
711.0
TSS
(mg/L)
273.2
485.2
305.0
138.5
118.0
122.8
94.8
32.0
12.4
428.0
421.5
361.0
351.5
369.5
479.5
475.0
175.5
173.5
212.0
210.0
100.5
100.5
398.5
178.7
175.1
164.9
219.2
518.5
70.7
288.2
193.2
74.5
113.0
68.0
67.5
66.0
44.0
385.0
117.0
2,770.0
281.0
186.5
77.0
542.0
186.5
42.0
549.0
324.5
170.0
290.4
224.0
373.2
264.0
319.5
141.0
135.0
142.5
168.5
592.5
947.0
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
N
0.173
0.286
0.444
0.644
0.871
1.109
1.361
1.657
2.028
2.478
3.012
3.564
N
0.284
0.646
1.244
2.112
3.231
4.569
6.170
8.190
10.818
14.167
18.273
23.067
N
0.347
0.909
1.936
3.569
5.867
8.811
12.422
16.838
22.264
28.872
36.873
46.131
N
0.336
0.822
1.715
3.203
5.467
8.588
12.545
17.213
22.460
28.304
35.144
43.337
N
0.360
1.050
2.362
4.459
7.331
10.820
14.818
19.395
24.738
31.046
38.775
48.317
N
0.402
1.099
2.402
4.502
7.460
11.182
15.546
20.510
26.170
32.792
41.061
51.540
N
0.896
2.030
4.221
8.183
14.274
21.612
28.671
35.305
42.461
49.543
56.941
63.963
N
3.322
5.755
6.648
7.133
11.225
22.886
33.984
39.159
49.771
54.876
58.047
66.711
N
0.000
0.002
2.861
38.947
87.211
99.821
100.000
100.000
100.000
100.000
100.000
100.000
N
0.491
2.031
5.482
11.445
19.721
29.331
39.403
49.745
60.120
69.437
77.309
84.703
N
0.582
2.234
5.813
11.907
20.366
30.307
40.865
51.658
62.344
72.063
80.686
89.012
N
0.611
2.429
6.408
13.159
22.352
32.781
43.333
53.648
63.507
72.071
79.269
85.977
N
0.628
2.421
6.286
12.794
21.636
31.690
41.929
52.030
61.832
70.589
78.185
85.304
N
0.588
2.367
6.284
12.952
22.043
32.355
42.807
53.093
62.981
71.530
78.650
85.480
N
0.462
1.757
4.550
9.302
15.924
23.821
32.517
41.987
52.099
62.019
71.220
80.013
N
0.463
1.730
4.445
9.045
15.439
23.059
31.450
40.601
50.431
60.214
69.454
78.339
N
0.604
2.225
5.676
11.494
19.519
28.897
38.775
48.751
58.518
67.399
75.244
82.384
N
0.619
2.289
5.846
11.842
20.102
29.738
39.874
50.113
60.173
69.357
77.438
84.805
N
0.644
2.497
6.520
13.348
22.707
33.422
44.329
54.926
64.917
73.442
80.088
85.241
N
0.692
2.547
6.488
13.106
22.161
32.584
43.271
53.643
63.360
71.754
78.503
83.548
N
0.643
2.577
6.832
14.098
24.058
35.381
46.693
57.300
66.799
74.574
81.080
86.804
N
0.652
2.559
6.714
13.766
23.405
34.366
45.361
55.726
65.014
72.513
78.676
84.160
N
3.524
5.640
8.522
12.303
16.917
22.168
28.132
35.318
44.031
53.745
63.384
71.728
N
4.022
6.414
9.570
13.503
18.066
23.146
28.999
36.337
45.771
57.186
69.428
79.698
N
3.291
5.266
7.941
11.359
15.391
19.879
24.954
31.242
39.533
50.221
62.958
75.292
N
6.010
9.260
13.379
18.412
24.116
30.098
36.311
43.358
51.973
62.394
74.133
84.328
N
2.584
4.212
6.546
9.711
13.576
17.811
22.332
27.662
34.550
43.426
54.524
66.350
N
2.197
3.626
5.635
8.272
11.396
14.793
18.547
23.327
30.058
39.340
51.256
64.044
N
8.355
12.597
17.603
23.479
29.955
36.250
41.929
47.857
54.865
62.503
71.066
79.412
N
2.988
5.148
7.971
11.958
17.941
25.491
32.738
40.163
49.618
58.928
68.275
78.314
N
2.464
4.201
6.771
10.633
15.929
21.940
27.978
35.069
44.107
53.751
64.499
76.049
N
4.560
7.545
11.783
17.492
24.428
31.943
39.676
47.992
57.187
66.744
76.299
84.901
N
5.976
9.287
13.662
19.326
26.091
33.376
40.900
49.088
58.247
67.856
77.150
84.455
N
9.332
14.162
20.156
27.718
36.649
45.996
55.155
64.496
73.983
82.507
89.729
95.152
N
9.296
14.052
19.976
27.541
36.541
45.883
54.852
63.921
73.211
81.599
88.861
94.229
N
9.010
13.659
19.436
26.732
35.330
44.269
52.965
61.857
71.000
79.316
86.451
91.816
N
11.897
17.408
24.046
32.451
42.411
52.482
61.719
70.841
80.033
87.569
93.578
98.084
N
2.584
4.296
6.867
10.537
15.279
20.797
26.967
34.092
42.351
51.323
60.716
70.266
N
3.204
5.265
8.322
12.741
18.520
25.148
32.291
40.325
49.399
58.696
68.044
77.609
N
0.951
1.647
2.685
4.166
6.155
8.699
11.942
16.101
21.108
26.538
32.357
39.036
N
1.559
2.551
4.008
6.064
8.772
12.116
16.162
21.108
27.071
34.004
42.047
51.187
N
1.878
3.049
4.721
7.002
9.902
13.362
17.417
22.275
28.126
35.031
43.218
52.640
N
2.856
4.571
6.979
10.248
14.348
19.069
24.333
30.346
37.258
44.989
53.689
62.979
N
2.509
4.051
6.169
8.923
12.266
16.151
20.775
26.652
34.220
43.485
54.178
65.314
N
2.590
4.275
6.584
9.555
13.108
17.163
21.854
27.606
34.826
43.686
54.343
66.001
N
4.941
7.770
11.590
16.644
22.753
29.365
36.302
44.078
52.863
62.260
73.505
85.049
N
2.592
4.235
6.549
9.640
13.458
17.872
22.947
29.075
36.635
45.638
55.882
66.657
N
2.714
4.466
6.910
10.138
14.098
18.687
23.986
30.330
37.981
46.917
57.154
68.076
N
2.763
4.518
7.075
10.619
15.114
20.321
26.147
32.822
40.543
49.216
58.827
68.554
Y
6.622
10.518
16.094
24.024
34.273
45.664
56.805
67.199
76.869
85.244
91.565
95.043
Y
4.095
6.815
10.877
16.637
24.056
32.651
42.011
52.060
62.579
72.885
82.453
90.195
Y
2.438
4.205
6.979
11.050
16.356
22.480
29.237
37.046
46.223
56.313
66.871
77.065
Y
3.269
5.443
8.674
13.220
19.028
25.717
32.997
40.961
49.726
59.091
69.015
78.717
Y
6.376
10.158
15.716
23.752
34.230
45.994
57.731
68.949
79.468
88.591
95.980
99.819
Y
8.827
13.796
20.342
29.096
39.908
51.483
62.569
72.858
82.055
89.640
96.539
99.882
Y
9.249
14.302
20.894
29.665
40.412
51.809
62.785
73.263
82.674
90.061
96.764
99.905
Y
9.106
14.076
20.539
29.293
40.349
52.320
63.670
73.988
83.102
90.557
97.214
99.932
Y
5.182
8.274
12.748
19.040
27.187
36.661
46.892
57.725
69.064
80.298
90.519
97.536
Y
3.179
5.301
8.383
12.615
17.922
24.035
30.930
39.078
48.879
59.944
71.189
80.927
Y
1.715
3.082
5.174
8.166
12.057
16.695
22.076
28.530
36.384
45.531
55.511
65.229
Appendix E. Tahoe stormwater particle size distribution data (continued).
152
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Sample
Type
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASCR
SB-ASC
SB-GS
SB-MS
SB-MSR
SB-ASCR
SB-ASC
SB-ASC
SB-ASCR
SB-ASCR
SB-ASC
SB-ASCR
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-GS
SB-ASC
SB-ASC
SB-GS
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-AS
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-GS
SB-ASC
SB-ASC
SB-ASC
Sample
DateTime
6/27/06 19:05
7/21/06 19:39
10/5/06 10:35
10/5/06 11:45
11/2/06 17:54
11/3/06 14:09
11/13/06 16:50
11/13/06 21:36
11/14/06 1:12
12/26/06 20:58
12/26/06 20:58
12/26/06 21:05
12/26/06 21:06
12/26/06 21:07
12/26/06 22:18
12/26/06 22:18
12/26/06 23:24
12/26/06 23:24
1/4/07 1:29
1/4/07 1:29
1/4/07 5:46
1/4/07 5:46
2/8/07 21:06
2/8/07 21:57
2/9/07 2:17
2/9/07 8:34
2/10/07 9:45
2/10/07 18:53
2/11/07 3:31
2/11/07 10:02
2/11/07 12:04
3/6/07 12:02
3/6/07 13:17
3/6/07 14:47
3/6/07 14:48
3/6/07 14:49
3/6/07 15:39
4/22/07 10:11
4/22/07 13:25
8/31/07 8:45
9/22/07 7:54
9/22/07 8:35
9/22/07 9:12
10/19/07 21:10
10/19/07 21:22
10/19/07 22:20
10/29/07 16:03
10/29/07 16:23
10/29/07 16:36
1/4/08 6:06
1/4/08 8:50
1/4/08 12:26
1/4/08 14:46
2/25/08 11:51
2/25/08 18:40
2/25/08 18:41
2/25/08 18:42
2/26/08 11:47
3/13/08 1:30
5/20/08 19:21
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
4.044
4.757
5.654
7.154
10.524
21.482
57.694
93.181
98.822
99.186
99.437
99.893
100.000
2,117,759
28.500
35.172
43.250
52.003
60.918
70.099
78.386
85.375
91.009
94.628
98.142
99.964
100.000
13,725,149
55.643
66.028
73.957
79.849
85.237
90.450
94.471
95.403
97.812
99.747
100.000
100.000
100.000
14,736,114
51.852
61.225
69.995
77.329
82.788
88.386
91.770
92.571
95.986
99.512
100.000
100.000
100.000
5,987,799
58.389
69.003
78.505
86.174
92.054
97.539
99.866
100.000
100.000
100.000
100.000
100.000
100.000
7,101,055
62.601
73.078
81.204
87.586
92.667
96.947
99.140
99.567
99.767
99.997
100.000
100.000
100.000
7,459,126
68.629
73.713
77.917
81.174
88.745
98.794
99.999
100.000
100.000
100.000
100.000
100.000
100.000
9,938,646
71.531
78.547
81.008
86.345
95.476
98.950
99.990
100.000
100.000
100.000
100.000
100.000
100.000
3,832,951
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
3,587,082
88.806
91.661
94.107
95.635
97.131
99.544
100.000
100.000
100.000
100.000
100.000
100.000
100.000
64,747,592
92.866
96.273
98.934
99.848
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
66,729,932
88.715
91.725
94.029
95.598
97.322
99.579
100.000
100.000
100.000
100.000
100.000
100.000
100.000
62,841,273
88.419
91.596
93.917
95.282
97.017
99.545
100.000
100.000
100.000
100.000
100.000
100.000
100.000
59,634,254
88.226
90.978
93.259
94.712
96.749
99.564
100.000
100.000
100.000
100.000
100.000
100.000
100.000
63,249,523
86.132
90.525
93.920
96.448
98.363
99.849
100.000
100.000
100.000
100.000
100.000
100.000
100.000
59,499,026
84.499
88.823
92.330
94.992
97.214
99.568
100.000
100.000
100.000
100.000
100.000
100.000
100.000
57,350,721
86.614
90.569
92.987
95.053
96.881
99.345
99.997
100.000
100.000
100.000
100.000
100.000
100.000
26,846,170
89.275
93.357
95.833
97.696
98.721
99.865
100.000
100.000
100.000
100.000
100.000
100.000
100.000
27,340,584
87.792
90.563
92.714
93.960
96.046
99.244
99.997
100.000
100.000
100.000
100.000
100.000
100.000
37,479,688
86.056
89.071
90.748
92.219
95.115
98.895
99.993
100.000
100.000
100.000
100.000
100.000
100.000
36,563,198
89.330
92.875
95.152
96.295
98.479
99.887
100.000
100.000
100.000
100.000
100.000
100.000
100.000
18,711,042
86.494
89.712
92.168
93.708
96.758
99.573
100.000
100.000
100.000
100.000
100.000
100.000
100.000
18,303,376
77.422
81.830
85.615
89.118
92.704
95.520
98.601
99.967
100.000
100.000
100.000
100.000
100.000
57,972,757
84.984
88.038
90.313
92.214
94.329
96.920
98.677
99.820
100.000
100.000
100.000
100.000
100.000
28,544,527
83.281
88.508
92.482
95.096
97.131
98.729
99.754
99.963
100.000
100.000
100.000
100.000
100.000
23,515,064
89.020
92.471
94.248
95.726
96.962
99.018
99.979
100.000
100.000
100.000
100.000
100.000
100.000
34,850,388
74.344
80.160
84.761
88.442
92.030
95.134
98.610
99.957
100.000
100.000
100.000
100.000
100.000
25,257,036
74.090
81.939
86.760
90.525
94.564
97.895
99.668
99.992
100.000
100.000
100.000
100.000
100.000
51,528,070
84.057
88.456
91.025
93.083
96.795
99.610
100.000
100.000
100.000
100.000
100.000
100.000
100.000
18,700,390
82.731
87.373
90.329
92.809
95.043
97.770
99.709
100.000
100.000
100.000
100.000
100.000
100.000
43,551,628
82.537
87.617
91.124
93.582
95.699
98.290
99.917
100.000
100.000
100.000
100.000
100.000
100.000
24,996,747
88.951
92.686
95.184
96.207
98.319
99.892
100.000
100.000
100.000
100.000
100.000
100.000
100.000
15,609,390
88.556
92.537
95.022
96.509
98.043
99.691
99.999
100.000
100.000
100.000
100.000
100.000
100.000
25,161,500
96.458
98.476
99.501
99.534
99.790
99.996
100.000
100.000
100.000
100.000
100.000
100.000
100.000
21,320,698
95.644
98.069
98.679
98.869
99.462
99.961
100.000
100.000
100.000
100.000
100.000
100.000
100.000
20,923,102
93.128
95.167
96.294
96.798
98.525
99.926
100.000
100.000
100.000
100.000
100.000
100.000
100.000
19,925,868
98.410
98.410
98.416
98.744
99.406
99.959
100.000
100.000
100.000
100.000
100.000
100.000
100.000
15,530,753
77.429
83.456
88.338
92.204
95.217
97.862
99.805
100.000
100.000
100.000
100.000
100.000
100.000
48,676,501
83.011
88.117
92.039
94.721
96.799
99.430
99.999
100.000
100.000
100.000
100.000
100.000
100.000
17,741,274
45.103
51.810
65.259
83.496
91.265
95.352
98.157
98.258
98.822
99.751
99.998
100.000
100.000
143,480,923
59.908
68.415
77.873
87.855
93.012
96.548
99.093
99.797
99.999
100.000
100.000
100.000
100.000
20,438,632
61.281
69.691
77.756
84.377
90.153
95.114
98.481
99.841
100.000
100.000
100.000
100.000
100.000
15,581,316
71.089
79.361
85.962
91.810
95.427
98.726
99.986
100.000
100.000
100.000
100.000
100.000
100.000
9,294,452
74.697
82.532
88.302
93.022
96.177
98.865
99.926
99.982
100.000
100.000
100.000
100.000
100.000
57,674,808
75.208
82.853
89.112
93.596
96.710
99.002
99.986
100.000
100.000
100.000
100.000
100.000
100.000
21,558,708
90.982
98.534
99.999
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
8,116,927
76.342
85.087
92.522
99.004
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
63,360,889
76.878
84.415
90.657
95.105
97.946
99.839
100.000
100.000
100.000
100.000
100.000
100.000
100.000
39,627,608
75.905
82.853
88.177
93.001
95.821
98.648
99.972
100.000
100.000
100.000
100.000
100.000
100.000
21,510,213
96.101
98.596
99.364
99.842
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
81,075,391
92.768
96.301
98.497
99.802
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
44,714,905
83.269
88.076
92.291
95.331
97.639
99.687
100.000
100.000
100.000
100.000
100.000
100.000
100.000
50,152,463
83.509
88.143
92.325
95.346
97.342
99.675
100.000
100.000
100.000
100.000
100.000
100.000
100.000
41,909,324
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
88,193,988
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
47,394,705
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
45,854,165
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
47,845,232
98.385
99.219
99.981
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
37,589,560
87.040
91.016
94.086
96.176
98.654
99.850
100.000
100.000
100.000
100.000
100.000
100.000
100.000
90,244,751
73.045
79.047
83.126
87.685
94.680
98.650
99.685
99.999
100.000
100.000
100.000
100.000
100.000
96,803,647
Appendix E. Tahoe stormwater particle size distribution data (continued).
153
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
Sample
Type
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-AS
1-ASC
1-ASC
1-ASC
1-ASC
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
Sample
DateTime
5/20/08 20:22
5/24/08 6:26
5/25/08 17:14
10/4/08 1:36
11/1/08 18:54
11/1/08 20:57
11/1/08 20:58
11/1/08 22:00
1/22/09 3:58
1/22/09 9:33
1/22/09 10:50
1/23/09 3:58
1/23/09 14:31
2/22/09 7:40
2/22/09 17:53
2/22/09 17:54
2/23/09 0:32
3/2/09 8:56
5/1/09 11:36
5/1/09 20:46
5/1/09 23:00
5/1/09 23:01
5/3/09 4:44
2/27/03 10:07
3/16/03 0:05
3/22/03 23:28
3/26/03 5:11
3/26/03 17:05
4/1/03 16:13
4/5/03 12:45
4/24/03 11:04
5/8/03 11:07
5/9/03 12:08
6/23/03 13:18
7/23/03 16:03
7/31/03 14:31
12/3/03 12:47
12/5/03 7:51
12/6/03 4:35
12/6/03 17:01
12/7/03 19:10
12/20/03 2:30
12/20/03 16:44
12/21/03 14:20
12/22/03 10:08
12/24/03 7:08
12/24/03 10:08
12/24/03 13:08
12/24/03 16:08
12/24/03 19:08
12/24/03 22:08
12/25/03 1:08
12/25/03 4:08
12/25/03 7:08
1/8/04 12:30
1/9/04 12:38
1/10/04 14:48
1/12/04 13:39
1/13/04 13:22
1/24/04 12:24
Turbidity
(NTU)
369.0
126.0
84.6
371.0
204.0
80.6
91.4
115.0
500.0
513.0
156.0
113.0
157.0
298.0
237.0
224.0
203.0
151.0
780.0
182.0
138.0
103.0
161.0
29.0
9.0
12.0
31.0
10.0
42.0
16.0
23.0
20.0
6.0
250.0
38.7
785.0
5.9
68.2
82.7
46.1
17.8
295.0
26.4
10.0
8.7
237.0
238.0
107.0
21.3
15.1
15.6
12.9
10.2
15.0
298.0
61.9
31.8
32.5
38.1
50.9
TSS
(mg/L)
584.0
109.5
83.0
469.0
263.0
107.0
91.5
157.0
423.0
430.5
114.5
55.0
152.5
3.5
139.5
142.5
182.0
249.5
321.4
206.9
99.0
90.5
246.5
36.4
2.0
22.0
64.8
6.4
65.2
24.4
38.0
30.0
3.6
128.9
46.4
1,601.5
4.8
49.6
98.8
49.2
13.2
221.2
16.0
6.0
1.6
184.0
262.4
131.6
22.0
11.2
9.2
5.2
5.6
12.0
231.0
53.6
22.8
25.6
27.6
53.6
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
Y
2.506
4.091
6.340
9.360
13.124
17.549
22.743
29.097
37.000
46.507
57.217
67.734
Y
4.774
7.474
11.353
16.814
23.867
31.968
40.553
49.523
58.941
68.522
77.733
84.806
Y
4.595
7.308
11.046
15.958
21.833
28.257
35.238
43.426
53.285
64.603
76.828
87.265
Y
2.090
3.213
4.808
7.022
9.902
13.386
17.493
22.432
28.412
35.461
43.688
53.052
Y
1.946
3.095
4.735
6.989
9.895
13.396
17.477
22.277
28.046
35.081
43.904
54.576
Y
2.114
3.244
4.830
7.030
9.950
13.588
17.889
22.784
28.227
34.336
41.771
51.285
Y
2.968
4.397
6.311
8.936
12.453
16.864
22.064
27.919
34.340
41.467
50.157
61.452
Y
1.626
2.540
3.820
5.557
7.796
10.523
13.763
17.633
22.314
28.063
35.449
44.872
Y
2.987
5.239
8.784
14.006
20.876
28.852
37.453
46.666
56.481
66.370
75.953
84.546
Y
3.067
5.182
8.505
13.476
20.085
27.686
35.707
44.290
53.483
62.571
71.572
80.184
Y
4.618
7.809
12.626
19.543
28.411
38.243
47.988
57.307
66.234
74.656
82.737
88.654
Y
7.582
11.139
15.960
22.704
31.451
41.252
50.999
60.346
69.340
77.747
85.055
89.266
Y
4.732
7.459
11.482
17.253
24.747
33.257
42.015
50.798
59.642
68.358
76.763
83.732
Y
7.838
11.762
17.135
24.621
34.246
44.939
55.443
65.442
75.135
84.085
91.107
94.301
Y
9.354
13.836
19.659
27.550
37.473
48.123
58.210
67.628
76.429
84.074
90.662
93.766
Y
9.513
14.291
20.549
28.940
39.356
50.450
60.801
70.166
78.890
86.866
93.332
95.569
Y
5.691
8.924
13.539
19.894
27.861
36.796
46.203
56.024
65.994
75.458
84.356
91.825
Y
2.767
4.584
7.244
10.925
15.583
20.973
26.968
33.767
41.593
50.352
59.817
69.092
Y
3.566
5.156
7.414
10.660
15.040
20.406
26.733
34.335
43.351
53.426
64.187
74.496
Y
2.948
4.349
6.321
9.078
12.718
17.202
22.629
29.323
37.494
47.141
58.342
70.025
Y
4.623
6.257
8.723
12.838
19.110
27.055
35.902
45.542
55.881
66.163
76.025
84.299
Y
4.418
6.261
8.938
13.272
19.828
28.117
37.365
47.656
58.838
69.726
80.024
89.038
Y
1.694
2.597
3.811
5.694
8.784
12.977
17.592
23.201
30.662
39.034
48.588
59.244
N
0.408
1.867
4.107
6.783
9.809
13.593
18.958
26.944
38.301
52.922
68.896
82.024
N
0.051
0.198
0.316
0.361
0.475
1.120
2.687
5.603
10.799
20.464
33.633
51.714
N
0.247
1.045
1.911
2.589
3.386
4.597
6.193
8.492
12.324
19.046
29.799
44.231
N
0.225
1.040
2.316
3.870
5.625
7.737
10.615
14.934
21.504
31.023
43.561
57.129
N
0.142
0.581
1.001
1.251
1.572
2.313
3.869
7.080
13.176
23.623
38.631
55.968
N
0.416
1.900
4.165
6.837
9.796
13.399
18.378
25.670
35.975
49.253
63.940
76.584
N
0.291
1.333
2.914
4.730
6.608
8.714
11.603
16.284
24.041
35.992
52.208
69.340
N
0.256
1.176
2.591
4.264
6.084
8.211
11.066
15.325
21.794
31.191
43.709
57.655
N
0.288
1.326
2.940
4.875
6.985
9.415
12.639
17.502
25.059
36.191
50.922
66.673
N
0.294
0.846
1.245
1.351
1.788
2.608
3.780
6.106
10.466
18.578
31.554
49.709
N
0.252
1.155
2.552
4.246
6.181
8.532
11.623
15.871
21.698
29.432
39.034
49.405
N
1.578
2.306
3.206
4.304
5.675
7.512
10.210
14.430
20.966
30.440
42.753
55.835
N
0.279
1.258
2.676
4.187
5.605
7.054
8.881
11.649
16.119
23.165
33.468
46.080
N
32.349
50.022
67.646
69.013
80.974
99.544
100.000
100.000
100.000
100.000
100.000
100.000
N
1.740
2.721
3.884
5.201
6.756
8.848
12.038
17.110
24.781
35.314
47.946
60.239
N
1.758
2.538
3.512
4.708
6.175
8.029
10.528
14.149
19.528
27.243
37.487
49.191
N
1.123
1.756
2.484
3.315
4.347
5.676
7.440
10.066
14.287
20.973
30.820
43.276
N
0.753
1.282
1.741
2.032
2.442
3.186
4.392
6.541
10.249
16.423
25.555
37.804
N
4.850
7.418
10.572
14.527
19.788
26.897
36.126
47.272
59.351
70.782
79.841
86.378
N
0.911
1.648
2.440
3.160
3.898
4.904
6.613
9.883
15.847
25.754
40.484
58.831
N
0.731
2.039
3.071
3.574
4.741
6.859
9.534
14.078
20.827
30.494
42.131
53.502
N
0.790
1.781
2.611
3.146
4.884
8.681
12.691
18.166
28.009
41.631
57.835
74.174
N
3.679
5.252
7.222
9.731
13.026
17.426
23.333
31.187
41.144
52.731
64.458
74.322
N
3.417
4.664
6.209
8.184
10.780
14.227
18.835
25.020
33.121
43.121
54.193
64.501
N
2.685
3.731
5.009
6.582
8.576
11.212
14.861
20.068
27.348
36.883
48.043
58.954
N
0.717
1.677
2.506
3.074
4.020
5.648
7.778
11.043
16.293
24.660
36.362
49.519
N
2.789
3.357
3.573
3.861
4.885
6.565
8.679
12.167
17.857
26.815
39.398
53.829
N
1.496
2.642
3.555
4.147
5.234
6.012
8.014
13.835
19.959
32.466
47.134
62.421
N
0.388
0.567
0.767
0.996
1.604
3.562
5.839
8.999
15.062
23.865
35.906
49.965
N
0.877
1.568
1.995
2.087
2.945
5.123
7.948
12.271
19.584
31.227
46.342
62.151
N
0.495
1.139
1.702
2.106
2.796
4.038
5.808
8.589
13.283
21.322
32.818
47.181
N
4.921
7.686
11.133
15.474
21.150
28.500
37.479
47.704
58.493
69.072
78.552
86.282
N
3.376
5.519
8.220
11.543
15.771
21.418
29.086
39.191
51.501
64.840
76.739
84.793
N
1.827
2.983
4.407
6.074
8.058
10.653
14.464
20.470
29.702
42.629
58.157
72.456
N
2.192
4.022
6.073
8.251
11.046
15.055
20.858
29.438
41.202
55.237
68.401
77.812
N
2.111
4.447
6.840
9.098
12.246
16.929
23.299
32.543
45.145
60.197
73.909
84.222
N
2.070
3.542
5.350
7.471
10.082
13.599
18.555
25.363
33.908
43.362
52.206
59.601
Appendix E. Tahoe stormwater particle size distribution data (continued).
154
Site
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
Speedboat
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
Sample
Type
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-ASC
SB-ASC
SB-ASC
SB-ASC
SB-MS
SB-MSR
SB-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-AS
1-ASC
1-ASC
1-ASC
1-ASC
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-AS
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
Sample
DateTime
5/20/08 20:22
5/24/08 6:26
5/25/08 17:14
10/4/08 1:36
11/1/08 18:54
11/1/08 20:57
11/1/08 20:58
11/1/08 22:00
1/22/09 3:58
1/22/09 9:33
1/22/09 10:50
1/23/09 3:58
1/23/09 14:31
2/22/09 7:40
2/22/09 17:53
2/22/09 17:54
2/23/09 0:32
3/2/09 8:56
5/1/09 11:36
5/1/09 20:46
5/1/09 23:00
5/1/09 23:01
5/3/09 4:44
2/27/03 10:07
3/16/03 0:05
3/22/03 23:28
3/26/03 5:11
3/26/03 17:05
4/1/03 16:13
4/5/03 12:45
4/24/03 11:04
5/8/03 11:07
5/9/03 12:08
6/23/03 13:18
7/23/03 16:03
7/31/03 14:31
12/3/03 12:47
12/5/03 7:51
12/6/03 4:35
12/6/03 17:01
12/7/03 19:10
12/20/03 2:30
12/20/03 16:44
12/21/03 14:20
12/22/03 10:08
12/24/03 7:08
12/24/03 10:08
12/24/03 13:08
12/24/03 16:08
12/24/03 19:08
12/24/03 22:08
12/25/03 1:08
12/25/03 4:08
12/25/03 7:08
1/8/04 12:30
1/9/04 12:38
1/10/04 14:48
1/12/04 13:39
1/13/04 13:22
1/24/04 12:24
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
76.233
82.119
86.667
90.931
95.950
98.973
99.919
100.000
100.000
100.000
100.000
100.000
100.000
65,463,195
87.623
90.828
93.994
95.810
98.539
99.995
100.000
100.000
100.000
100.000
100.000
100.000
100.000
21,242,018
92.009
96.342
99.728
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
15,510,211
61.791
69.567
78.333
88.859
94.972
98.184
99.950
100.000
100.000
100.000
100.000
100.000
100.000
37,721,894
65.306
74.644
82.550
89.214
93.522
97.332
98.736
99.707
100.000
100.000
100.000
100.000
100.000
21,619,315
61.317
71.470
81.685
88.122
93.185
97.026
98.902
99.938
100.000
100.000
100.000
100.000
100.000
8,633,627
73.054
85.631
98.105
99.998
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
9,118,556
55.270
66.125
75.524
83.010
88.141
93.071
96.263
96.695
98.780
99.991
100.000
100.000
100.000
10,150,749
89.091
92.205
95.470
97.968
99.299
99.951
100.000
100.000
100.000
100.000
100.000
100.000
100.000
72,622,544
84.415
88.896
92.576
95.613
98.634
99.923
100.000
100.000
100.000
100.000
100.000
100.000
100.000
69,644,564
91.214
94.477
97.385
99.437
99.976
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
26,924,194
92.625
95.288
98.034
99.448
99.832
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
13,622,188
87.441
90.999
94.527
96.905
98.909
99.991
100.000
100.000
100.000
100.000
100.000
100.000
100.000
30,381,275
96.749
98.534
99.728
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
958,874
95.847
97.688
99.246
99.961
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
42,202,661
97.724
99.277
99.628
99.995
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
45,958,309
93.986
96.383
98.745
99.923
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
41,771,441
76.111
81.772
86.743
90.953
95.112
98.026
99.870
100.000
100.000
100.000
100.000
100.000
100.000
32,735,770
79.787
84.931
89.345
92.828
95.344
98.150
99.680
99.971
100.000
100.000
100.000
100.000
100.000
37,065,776
77.403
84.285
90.283
93.740
95.650
97.821
99.749
99.978
100.000
100.000
100.000
100.000
100.000
20,769,976
87.069
91.448
94.423
96.181
98.100
99.728
100.000
100.000
100.000
100.000
100.000
100.000
100.000
12,759,745
91.733
96.275
99.035
99.957
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
12,773,938
66.920
74.054
80.328
86.147
90.667
94.388
97.742
99.468
99.993
100.000
100.000
100.000
100.000
16,467,455
90.121
94.586
96.470
97.988
99.256
99.932
100.000
100.000
100.000
100.000
100.000
100.000
100.000
3,802,991
68.840
83.772
92.763
99.652
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
17,030
59.912
73.219
82.292
88.170
94.193
97.714
99.712
100.000
100.000
100.000
100.000
100.000
100.000
1,022,509
68.758
77.777
84.633
90.170
94.650
97.711
98.847
99.416
99.736
99.995
100.000
100.000
100.000
3,825,621
72.604
86.081
93.751
97.134
99.666
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
157,230
85.449
91.665
95.265
97.425
98.823
99.591
99.960
100.000
100.000
100.000
100.000
100.000
100.000
6,866,755
82.144
89.330
92.792
95.616
98.074
99.493
99.985
100.000
100.000
100.000
100.000
100.000
100.000
1,777,684
70.139
79.977
86.735
91.749
95.745
98.444
99.907
100.000
100.000
100.000
100.000
100.000
100.000
2,483,830
79.571
88.399
93.243
96.200
98.500
99.636
99.968
100.000
100.000
100.000
100.000
100.000
100.000
2,230,431
69.049
83.864
93.895
96.030
99.990
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100,135
59.044
67.620
74.569
80.649
88.069
93.373
95.298
96.815
98.446
99.430
99.694
99.989
100.000
8,370,510
67.119
76.263
83.573
89.407
93.992
96.600
98.682
99.950
100.000
100.000
100.000
100.000
100.000
2,227,703
58.331
68.556
76.578
82.883
87.718
90.960
92.838
94.208
95.838
97.091
97.820
99.115
100.000
104,700,817
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
4,401,105
70.285
78.402
84.771
89.732
93.830
96.639
98.352
99.323
99.740
99.997
100.000
100.000
100.000
3,094,781
60.633
70.946
79.312
85.721
90.441
93.580
95.263
96.332
97.743
98.947
99.712
100.000
100.000
5,076,018
56.229
67.889
77.154
84.446
89.785
93.206
95.042
96.708
98.677
99.984
100.000
100.000
100.000
1,957,503
51.558
65.978
78.681
88.858
94.348
97.353
99.541
100.000
100.000
100.000
100.000
100.000
100.000
375,688
90.695
93.761
95.860
97.325
98.430
99.036
99.392
99.608
99.824
99.998
100.000
100.000
100.000
37,515,707
76.123
88.131
94.233
96.838
98.185
99.246
99.932
100.000
100.000
100.000
100.000
100.000
100.000
694,817
62.458
70.629
76.903
83.987
89.577
94.958
99.749
100.000
100.000
100.000
100.000
100.000
100.000
409,267
86.282
97.671
99.987
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
90,232
81.573
86.808
90.416
93.150
95.256
96.688
97.510
97.956
98.729
99.714
99.997
100.000
100.000
19,355,673
72.924
79.741
84.892
88.818
91.872
94.183
95.775
96.911
98.253
99.288
99.791
100.000
100.000
21,796,576
68.196
75.962
82.219
87.120
91.098
94.014
95.893
97.343
98.818
99.854
100.000
100.000
100.000
9,026,378
61.298
71.528
80.551
88.220
94.382
98.057
99.994
100.000
100.000
100.000
100.000
100.000
100.000
1,148,061
66.793
76.810
83.934
89.115
95.228
98.404
99.874
100.000
100.000
100.000
100.000
100.000
100.000
320,757
74.965
83.094
91.703
96.029
99.960
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
553,596
62.470
73.665
83.477
91.982
98.378
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
69,278
75.005
84.496
89.279
94.995
99.036
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
197,684
61.991
75.363
85.466
91.772
96.438
98.225
99.856
100.000
100.000
100.000
100.000
100.000
100.000
426,419
91.387
94.650
96.461
97.670
98.570
99.061
99.263
99.536
99.787
99.997
100.000
100.000
100.000
42,301,284
89.400
92.387
94.653
96.486
97.674
98.833
99.823
100.000
100.000
100.000
100.000
100.000
100.000
7,626,965
82.400
88.813
92.811
95.569
97.564
98.988
99.937
100.000
100.000
100.000
100.000
100.000
100.000
1,712,360
83.170
86.958
89.754
92.106
95.442
97.959
99.879
100.000
100.000
100.000
100.000
100.000
100.000
2,899,392
90.417
95.095
98.326
99.005
99.912
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
3,804,688
66.396
72.696
76.894
79.387
81.444
83.146
84.853
86.900
91.051
97.550
99.992
100.000
100.000
5,125,483
Appendix E. Tahoe stormwater particle size distribution data (continued).
155
Site
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
Sample
Type
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-AS
1-AS
1-ASC
1-ASC
1-ASC
1-AS
1-AS
1-AS
1-MSC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
Sample
DateTime
2/5/04 10:22
2/16/04 10:24
2/17/04 5:27
2/18/04 13:02
2/25/04 13:33
2/26/04 16:34
3/6/04 14:10
3/7/04 10:55
3/24/04 14:28
4/5/04 9:27
4/20/04 2:55
4/20/04 5:33
4/22/04 9:00
5/10/04 6:58
5/11/04 2:42
5/27/04 23:16
5/28/04 0:48
5/28/04 4:54
7/21/04 9:16
8/15/05 16:31
8/16/05 13:01
8/16/05 13:20
8/16/05 14:27
10/24/05 18:08
12/18/05 11:41
12/18/05 19:48
12/19/05 5:43
12/19/05 21:21
12/20/05 13:01
12/21/05 7:49
12/21/05 16:20
12/22/05 6:00
12/23/05 12:51
2/1/06 13:49
2/8/06 9:19
2/9/07 0:37
2/9/07 7:08
2/10/07 8:46
2/11/07 7:00
8/31/07 8:25
9/22/07 7:53
10/19/07 18:07
10/29/07 15:14
1/4/08 6:40
1/4/08 11:03
3/12/08 23:42
5/20/08 19:13
11/1/08 10:58
11/2/08 0:06
1/21/09 22:26
1/22/09 6:38
1/22/09 13:11
1/22/09 20:53
1/23/09 11:42
Turbidity
(NTU)
60.9
146.0
12.7
56.9
99.2
138.0
15.8
11.6
12.7
8.0
51.1
28.3
5.2
323.0
49.6
71.4
102.0
169.0
6.9
226.0
405.0
440.0
153.0
43.3
122.0
52.4
25.2
14.0
23.2
99.7
103.0
55.3
9.8
70.2
9.5
71.1
59.8
57.5
49.5
1,177.0
113.0
21.0
110.0
176.0
157.0
60.3
399.0
79.6
18.4
211.0
137.0
207.0
51.5
68.6
TSS
Sonicate <0.49 µm
<0.69 µm
<1.0 µm
<1.4 µm
<2.0 µm
<2.8 µm
<3.9 µm
<5.5 µm
<7.8 µm
<11 µm
<16 µm
<22 µm
(mg/L)
(Y/N)
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
47.6
N
0.732
1.250
1.905
2.714
3.769
5.216
7.218
9.897
13.210
16.846
20.172
22.654
209.6
N
2.672
3.675
4.872
6.290
7.984
10.109
13.026
17.399
24.048
33.577
45.755
58.374
8.8
N
0.455
1.095
1.607
1.862
2.337
3.299
4.548
6.514
10.258
16.978
27.512
41.962
55.6
N
2.268
3.232
4.372
5.685
7.219
9.170
11.963
16.325
23.136
33.099
46.208
60.426
104.8
N
3.223
4.629
6.365
8.515
11.261
14.920
19.964
26.982
36.352
47.864
60.211
71.146
134.8
N
3.539
5.128
7.116
9.607
12.796
16.980
22.575
30.105
39.945
51.936
64.763
75.899
14.8
N
0.857
2.137
3.508
4.749
6.284
8.458
11.862
17.390
25.056
36.596
50.249
64.093
10.0
N
0.793
1.836
2.857
3.672
4.828
6.559
8.858
12.504
18.042
26.462
37.629
50.081
16.4
N
0.073
0.204
0.315
0.406
0.676
0.971
1.300
2.368
3.109
4.759
7.285
10.454
11.6
N
0.171
0.640
1.041
1.255
1.747
2.439
3.449
5.378
7.842
12.082
17.620
25.817
45.2
N
0.582
1.356
2.645
4.522
6.946
9.862
13.402
17.986
24.149
32.315
42.659
53.876
15.2
N
0.525
1.221
2.102
3.638
6.590
10.074
12.718
17.024
24.323
29.225
39.389
50.507
4.4
N
0.285
0.656
1.212
1.931
2.971
4.326
6.074
9.137
14.178
21.276
28.730
45.596
481.0
N
0.653
1.592
3.190
5.528
8.506
11.987
16.096
21.368
28.451
37.576
48.108
58.256
42.4
N
0.592
1.498
3.097
5.543
8.850
12.969
18.001
24.269
32.040
41.338
52.242
63.699
81.2
N
0.248
0.605
1.225
2.167
3.436
5.018
6.991
9.581
13.053
17.597
23.596
31.099
167.2
N
0.308
0.709
1.372
2.332
3.568
5.076
6.986
9.614
13.309
18.209
24.115
30.308
427.6
N
0.440
0.985
1.874
3.144
4.748
6.639
8.929
11.976
16.242
22.050
29.470
38.097
2.0
N
0.079
0.276
0.605
0.999
1.521
2.515
4.157
6.062
9.213
14.937
19.667
34.361
349.2
N
1.206
1.814
2.591
3.521
4.567
5.782
7.435
10.107
14.616
21.845
32.602
46.286
742.0
N
1.066
1.575
2.218
2.975
3.792
4.648
5.637
7.054
9.392
13.333
19.984
30.703
1,042.0
N
0.880
1.378
2.036
2.834
3.704
4.603
5.606
6.990
9.243
13.043
19.497
29.959
206.0
N
0.935
1.448
2.126
2.959
3.900
4.920
6.092
7.665
10.080
13.979
20.501
31.335
60.0
N
0.499
1.068
1.954
3.196
4.774
6.655
8.983
12.228
16.964
23.272
30.427
41.395
150.8
N
0.627
1.819
4.045
7.486
11.973
17.132
22.824
29.323
36.909
45.319
53.996
62.177
88.8
N
0.252
0.719
1.579
2.882
4.539
6.407
8.472
10.908
13.842
17.235
21.194
24.998
40.0
N
0.243
0.583
1.161
2.000
3.040
4.153
5.286
6.602
8.259
10.115
11.950
14.023
7.2
N
3.641
5.239
7.561
10.467
13.605
16.361
18.344
20.436
23.945
28.026
31.137
32.414
20.4
N
2.200
3.878
7.161
12.335
18.807
25.392
31.550
38.296
46.815
55.131
60.007
70.883
192.4
N
0.486
1.351
2.933
5.355
8.516
12.207
16.417
21.458
27.654
34.929
42.883
50.939
154.0
N
0.325
0.986
2.265
4.344
7.181
10.426
13.787
17.453
21.591
25.884
30.290
34.172
100.0
N
0.250
0.731
1.638
3.051
4.901
7.019
9.325
11.923
14.951
18.413
22.361
26.391
4.4
N
2.469
3.502
4.904
6.028
7.016
8.163
9.017
9.527
12.176
12.976
13.155
14.407
67.6
N
0.324
1.402
3.837
7.982
13.451
19.233
24.682
30.257
36.302
41.792
46.824
51.277
7.2
N
0.550
1.187
2.265
3.915
6.173
8.631
10.588
12.041
13.910
16.783
19.562
21.268
78.0
N
1.896
3.069
4.593
6.441
8.487
10.592
12.845
15.868
20.546
27.514
37.418
49.732
75.0
N
1.660
2.609
3.813
5.275
6.935
8.675
10.507
12.948
16.777
22.466
30.794
42.037
83.5
N
2.231
3.441
4.949
6.674
8.469
10.283
12.321
15.137
19.453
25.893
34.896
45.713
48.0
N
3.807
5.734
8.118
11.012
14.401
18.053
21.865
26.654
33.100
40.584
49.511
58.276
1,900.0
N
1.293
2.370
3.719
5.682
9.004
13.522
17.911
22.853
29.523
35.231
40.740
47.205
239.0
N
1.746
2.847
4.351
6.289
8.630
11.363
14.652
18.834
24.132
30.537
38.127
46.802
33.0
N
3.332
4.968
7.177
10.065
13.512
17.279
21.491
26.830
33.713
41.730
51.036
62.761
128.5
N
2.156
3.945
6.591
10.199
14.624
19.515
24.621
30.115
36.506
44.269
53.806
64.373
160.5
Y
3.608
5.754
8.719
12.627
17.416
22.947
29.346
37.114
46.559
57.314
68.584
78.752
203.0
Y
3.036
4.808
7.229
10.357
14.112
18.402
23.389
29.612
37.624
47.588
59.152
70.410
122.4
Y
2.688
4.465
7.043
10.550
14.856
19.673
25.002
31.351
39.153
48.237
58.267
68.075
639.5
Y
1.570
2.941
5.085
8.170
12.132
16.716
21.880
28.023
35.473
43.910
52.659
60.914
113.2
Y
2.746
4.309
6.482
9.392
13.025
17.246
22.011
27.478
33.830
41.250
50.343
60.809
12.0
Y
12.931
16.682
20.957
26.311
33.101
40.776
48.397
56.127
64.134
71.042
78.705
85.834
203.5
Y
3.782
6.363
10.273
15.847
22.975
31.032
39.438
48.055
56.802
65.352
73.953
82.215
94.5
Y
8.046
12.323
18.407
26.913
37.411
48.318
58.488
68.055
76.860
84.105
90.276
94.181
184.5
Y
5.870
9.199
14.085
21.090
30.093
40.011
49.762
59.130
68.160
76.481
84.160
89.796
44.0
Y
6.367
9.360
13.549
19.461
27.069
35.530
44.015
52.430
60.875
69.190
77.047
81.878
64.0
Y
6.288
9.402
13.754
19.805
27.389
35.527
43.424
51.216
59.133
66.982
74.770
79.914
Appendix E. Tahoe stormwater particle size distribution data (continued).
156
Site
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
TCWTS S1
Sample
Type
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-AS
1-AS
1-ASC
1-ASC
1-ASC
1-AS
1-AS
1-AS
1-MSC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
1-ASC
Sample
DateTime
2/5/04 10:22
2/16/04 10:24
2/17/04 5:27
2/18/04 13:02
2/25/04 13:33
2/26/04 16:34
3/6/04 14:10
3/7/04 10:55
3/24/04 14:28
4/5/04 9:27
4/20/04 2:55
4/20/04 5:33
4/22/04 9:00
5/10/04 6:58
5/11/04 2:42
5/27/04 23:16
5/28/04 0:48
5/28/04 4:54
7/21/04 9:16
8/15/05 16:31
8/16/05 13:01
8/16/05 13:20
8/16/05 14:27
10/24/05 18:08
12/18/05 11:41
12/18/05 19:48
12/19/05 5:43
12/19/05 21:21
12/20/05 13:01
12/21/05 7:49
12/21/05 16:20
12/22/05 6:00
12/23/05 12:51
2/1/06 13:49
2/8/06 9:19
2/9/07 0:37
2/9/07 7:08
2/10/07 8:46
2/11/07 7:00
8/31/07 8:25
9/22/07 7:53
10/19/07 18:07
10/29/07 15:14
1/4/08 6:40
1/4/08 11:03
3/12/08 23:42
5/20/08 19:13
11/1/08 10:58
11/2/08 0:06
1/21/09 22:26
1/22/09 6:38
1/22/09 13:11
1/22/09 20:53
1/23/09 11:42
0.5-16 µm
<44 µm
<63 µm
<88 µm
<125 µm
<177 µm
<250 µm
<354 µm
<500 µm
<707 µm
<1000 µm
<1414 µm
<2000 µm Particle Conc.
<31 µm
(volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %) (volume %)
(No./mL)
24.409
25.885
27.076
28.232
29.453
30.739
32.079
34.032
37.517
43.982
55.415
76.788
100.000
1,647,615
68.941
77.243
83.561
88.307
91.783
94.139
95.446
96.273
97.511
98.863
99.741
100.000
100.000
13,460,676
57.545
72.186
83.701
89.845
95.613
98.159
99.971
100.000
100.000
100.000
100.000
100.000
100.000
293,157
72.937
83.185
90.357
94.474
97.282
99.051
99.854
99.999
100.000
100.000
100.000
100.000
100.000
3,402,882
79.739
86.494
91.279
94.543
97.085
98.498
99.223
99.633
99.830
99.998
100.000
100.000
100.000
9,721,954
84.118
90.141
94.081
96.363
97.678
98.361
98.798
99.308
99.673
99.996
100.000
100.000
100.000
14,230,421
75.204
84.096
90.452
95.746
98.325
99.970
100.000
100.000
100.000
100.000
100.000
100.000
100.000
1,123,230
61.727
72.936
82.199
87.826
95.959
98.844
99.999
100.000
100.000
100.000
100.000
100.000
100.000
593,212
14.507
20.275
27.171
35.651
41.941
47.971
52.921
57.167
61.623
65.609
79.843
99.896
100.000
122,317
35.866
46.797
58.329
67.026
77.830
86.944
94.070
100.000
100.000
100.000
100.000
100.000
100.000
291,711
63.753
70.905
76.056
80.644
84.203
89.060
90.776
95.408
99.921
100.000
100.000
100.000
100.000
2,751,247
58.700
61.482
74.222
75.471
79.174
83.628
85.313
86.472
92.946
99.982
100.000
100.000
100.000
791,864
51.026
56.791
76.607
77.070
77.499
80.321
91.048
99.343
100.000
100.000
100.000
100.000
100.000
120,948
67.468
74.783
78.702
82.946
86.292
90.146
92.978
93.879
97.001
99.965
100.000
100.000
100.000
35,835,665
70.489
75.521
83.093
86.082
88.844
91.258
92.470
93.091
96.191
99.950
100.000
100.000
100.000
3,180,241
38.474
45.243
53.751
60.051
65.821
71.290
74.776
76.648
81.539
86.568
89.904
96.728
100.000
2,377,384
36.240
41.708
45.430
48.158
50.668
54.239
56.125
56.537
67.389
94.891
99.752
100.000
100.000
5,256,901
47.393
56.975
65.180
70.514
75.440
80.413
83.780
85.437
90.184
98.267
99.998
100.000
100.000
17,993,069
40.954
55.827
70.110
76.202
81.877
86.447
91.034
97.397
97.680
99.979
100.000
100.000
100.000
30,771
59.778
70.756
79.216
85.651
90.556
94.919
97.593
98.006
98.725
99.981
100.000
100.000
100.000
13,944,101
45.453
61.282
73.964
82.763
88.590
93.722
97.013
97.502
98.275
99.552
99.999
100.000
100.000
24,356,394
44.330
59.663
71.914
80.690
86.958
91.841
94.754
95.351
96.641
98.841
99.995
100.000
100.000
34,302,020
47.356
66.316
81.585
90.269
94.917
98.915
99.994
100.000
100.000
100.000
100.000
100.000
100.000
7,030,487
53.998
71.283
79.688
85.591
87.373
89.894
94.447
99.675
100.000
100.000
100.000
100.000
100.000
2,565,848
67.647
72.264
76.872
81.032
85.194
89.816
94.677
96.899
99.403
99.999
100.000
100.000
100.000
15,221,049
27.111
30.214
32.614
35.776
40.610
51.649
65.751
74.384
81.036
86.074
91.956
97.849
100.000
3,453,657
15.423
17.317
18.781
20.809
25.294
35.861
53.824
68.421
78.263
83.776
90.501
96.807
100.000
1,065,323
41.810
47.530
55.152
59.808
65.556
66.802
67.316
69.025
73.268
79.546
88.510
99.709
100.000
791,011
73.241
85.068
90.292
97.088
99.996
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,952,727
57.816
63.378
70.601
77.804
82.554
86.229
89.620
90.724
94.046
97.900
99.953
100.000
100.000
13,917,800
37.153
41.242
44.926
49.280
53.071
57.727
61.741
65.464
72.646
79.774
83.756
91.009
100.000
8,955,471
29.905
34.657
39.303
44.712
50.038
55.139
61.175
66.713
74.143
83.077
89.888
96.927
100.000
4,105,469
24.969
28.450
37.627
38.956
40.135
40.964
41.753
82.352
96.453
99.996
100.000
100.000
100.000
281,741
53.697
57.495
60.866
62.984
66.201
69.521
74.327
84.509
96.848
99.985
100.000
100.000
100.000
7,060,652
30.793
35.069
42.354
52.717
63.526
77.640
90.975
95.042
97.750
99.978
100.000
100.000
100.000
365,451
61.503
71.549
78.084
83.328
88.804
94.884
98.656
99.949
100.000
100.000
100.000
100.000
100.000
6,004,693
53.904
65.133
72.536
78.270
84.245
91.858
96.225
96.921
98.712
99.878
100.000
100.000
100.000
4,632,679
55.798
64.363
71.014
75.828
82.012
89.576
93.897
96.014
98.653
99.920
100.000
100.000
100.000
6,423,287
65.124
72.046
76.423
80.249
85.304
92.614
97.592
99.854
100.000
100.000
100.000
100.000
100.000
5,968,434
52.215
57.180
61.092
65.127
68.420
70.840
73.444
74.767
77.209
80.464
84.337
91.799
100.000
143,957,102
54.945
62.377
68.685
74.224
79.111
84.377
88.627
91.541
96.045
99.606
100.000
100.000
100.000
18,075,418
71.458
80.826
87.510
91.781
96.723
98.937
99.933
100.000
100.000
100.000
100.000
100.000
100.000
3,683,881
73.105
80.567
85.944
89.947
93.337
96.829
99.196
99.749
99.997
100.000
100.000
100.000
100.000
16,534,888
84.323
88.976
92.551
94.842
96.878
99.407
99.999
100.000
100.000
100.000
100.000
100.000
100.000
23,888,315
77.852
83.708
88.570
92.097
95.237
98.325
99.949
100.000
100.000
100.000
100.000
100.000
100.000
24,679,035
73.980
78.977
83.148
85.952
89.974
93.634
99.063
99.999
100.000
100.000
100.000
100.000
100.000
15,520,482
67.808
73.048
77.639
82.747
92.609
97.870
99.166
99.988
100.000
100.000
100.000
100.000
100.000
66,175,403
68.515
75.031
81.316
85.394
90.181
93.560
96.619
99.082
99.992
100.000
100.000
100.000
100.000
12,361,862
87.660
91.098
96.598
97.832
99.487
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
2,835,878
85.706
89.374
93.625
96.203
98.241
99.855
100.000
100.000
100.000
100.000
100.000
100.000
100.000
38,776,444
95.740
97.362
99.531
99.999
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
28,571,385
91.950
94.890
97.342
99.084
99.757
100.000
100.000
100.000
100.000
100.000
100.000
100.000
100.000
44,617,305
86.009
89.685
92.467
95.713
97.473
99.821
100.000
100.000
100.000
100.000
100.000
100.000
100.000
9,322,084
84.467
88.607
92.142
95.881
97.991
99.901
100.000
100.000
100.000
100.000
100.000
100.000
100.000
13,998,349