Hydrology of a waste rock repository capping system at the Zortman Mine
by Elizabeth Anne Warnemuende
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Land
Rehabilitation
Montana State University
© Copyright by Elizabeth Anne Warnemuende (1997)
Abstract:
Waste rock produced by the mining industry may contain sulfide minerals, which often oxidize to
produce acid in the presence of water. This acid production may lead to acid rock drainage. Therefore,
it is important to dispose of sulfide - rich waste rock in a way that will minimize exposure to water and
the consequent release of acid rock drainage into the environment.
The 300 - foot thick Mill Gulch waste rock repository at the Zortman Mine was capped with a series of
oxidized and clayey materials in 1992. The cap was designed to minimize infiltration of water into the
repository and thus minimize the probability of acid rock drainage. The purpose of this investigation
was to evaluate the hydrology of the Mill Gulch waste rock repository in order to determine whether
the capping system adequately precludes infiltration of precipitation into the repository so as to prevent
gravitational drainage of water from the repository.
Repository water content was measured monthly over a 12 month monitoring period using a neutron
probe. Neutron probe data were collected from eight neutron probe access tubes located on three
different terraces on the Mill Gulch waste rock repbsitoiy. Neutron tubes varied in depth from 70 to
310 feet.
A laboratory method for neutron probe calibration in unconsolidated waste rock was developed. A fifty
gallon sample of waste rock was oven dried and loaded into a monitoring barrel, which was equipped
with time domain reflectometry probes and a neutron probe access tube for the entire profile. The
response of time domain reflectometry and neutron probe measurements to calculated volumetric water
additions was monitored following additions of 0.5 % volumetric water increments.
A neutron probe calibration for the waste rock material was successfully generated. The relationship
between the neutron count ratio and volumetric water content was found to be linear with r = 0.96. The
results of the hydrologic study indicated that much of the Mill Gulch waste rock was at or above field
capacity; thus water will drain downward in response to gravity. Average drainage from the repository
was estimated to be less than the 14.3 inches of precipitation received during the monitoring period.
The capping system is thought to be effective at storing infiltration and promoting runoff from the
repository. In addition to precipitation, the repository received run - on from a large unreclaimed
topsoil stockpile located up gradient from the top bench of the repository. Run - on contributed to
infiltration at the repository top. H Y D R O L O G Y O F A W A ST E R O C K R E PO S IT O R Y C A PPIN G SY STEM A T
T H E Z O R T M A N M IN E
by
Elizabeth Anne Wamemuende
A thesis submitted in partial fulfillment
o f the requirements for the degree
of
M asterofScience
in
Land Rehabilitation
MONTANA STATE UNTVERSITY-BOZEMAN
Bozeman, Montana
December 1997
ii
APPROVAL
o f a thesis submitted by
Elizabeth Anne W amemuende
This thesis has been read by each member o f the thesis com m ittee and has been
found to be satisfactory regarding content, English usage, format, citations, bibliographic
style, and consistency, and is ready for submission to the College o f G raduate Studies.
1997
Chairperson, G raduate Committee
Date
A pproved for the M ajor Department
/J - 3
Date
'<7
Head, M ajor De
A pproved for the College o f Graduate Studies
iduate De;
Ill
STATEMENT OF PERMISSION TO USE
In presenting this thesis in partial fulfillment o f the requirements for a master’s
degree at M ontana State University, I agree that the Library shall make it available to
borrowers under the rules o f the Library.
I f I have indicated my intention to copyright this thesis by including a copyright
notice page, copying is allowable only for scholarly purposes, consistent with “fair use”
prescribed in the U S. Copyright law. Requests for permission for extended quotation
from or reproduction o f this thesis in whole or in parts may be granted only by the
copyright holder.
Signature
Date
/I •
/Z ' f - ? 7
ft e
M
iv
ACKNOW LEDGM ENTS
I w ould like to thank m y m other for answ ering hundreds o f im possible childhood
questions w ith “go to school and find out,” and m y father for the countless kitchen table
tutoring sessions w hich m ade that a reasonable request.
A dditionally, I am thankful to Dr. Douglas D ollhopf for providing m e w ith the
Opportunities and skills I needed to take on this project, m y com m ittee m em bers and the
Reclam ation R esearch U nit at M ontana State U niversity for their expertise and patience,
and Clark A rm strong and John Goering for their assistance in consistently w retched field
weather.
V
TABLE OF CONTENTS
Page
APPROVAL ..................................................................................................................
STATEMENT OF PERMISSION TO U S E ..................................................
ACKNOWLEDGEMENTS
.
...........................................
TABLE OF CONTENTS
LIST OF TABLES
....................................................................................................
LIST OF FIGURES
.....................
ABSTRACT
..................................................................................................................
INTRODUCTION
Objectives
ii
ffi
iv
v
vii
x
xi
......................................................................................
....................................................................................................
I
2
BACKGROUND
....................................................................................................
Climatic Conditions
..................................................................................
Site Description
.......................................................................................
3
3
3
LITERATURE REVIEW
.........................................
Cap Hydrology
......................................................................................
Neutron Probe
......................................................................................
Time Domain Reflectometry ..............................
6
6
8
10
MATERIALS AND METHODS
.................................................
Neutron Probe Calibration
.........................................................................
Calibration material .........................................................................
Instrumentation
....................................
Barrel preparation
.........................................................................
Drainage system installation ........................
Installation o f equipment and calibration material
............
Calibration protocol ....................................................................
13
13
14
15
18
19
20
21
vi
Field D ata C o lle c tio n ....................................................................................
Calculations
RESU LTS
D rainage A nalysis
D rainage from
D rainage from
D rainage from
Cap H ydrology
CO NCLUSIO NS
..................................................................
REFEREN CES CITED
A PPEN D ICES
A ppendix
A ppendix
A ppendix
A ppendix
the low er bench
...................................................
the m iddle bench
...................................................
the repository top
............................................; . .
.....................................................................
................................................................................... .. .
...........................................................
A
B
C
D
- N eutron Probe Calibration D ata
.....................................
- N eutron Probe Counts for M ill G u lc h .....................................
- N eutron Probe Count R atios for M ill Gulch .......................
- W ater Storage D ata for M ill G ulch
.....................................
27
29
32
32
40
51
55
58
60
64
66
67
70
91
112
VU
LIST OF TABLES
Table
Page
1.
Monthly drainage and precipitation totals for the Mill Gulch waste
rock repository and cap
........... ................................................................. 33
2.
Volumetric water content data for the Lower bench - east tube
........... 37
3.
Volumetric water content data for the Lower bench - west tube
........... 38
4.
Volumetric water content data for the Lower bench - center tube
........... 39
5.
Volumetric w ater content data for the Middle bench - west tube
........... 41
6.
Volumetric water content data for the Middle bench - center tube
....
42
7.
Volumetric water content data for the Middle bench - east tube
....
43
8.
Volumetric water content data for the Top bench - east tube
....
44
9.
Volumetric water content data for the Top bench - west tube
....
46
10.
Neutron probe calibration d a ta ...........................................................................
11.
N eutron probe counts collected from Mill Gulch waste
rock repository on May 22, 1996
.............................................................
12.
13.
14.
68
71
N eutron probe counts collected from Mill Gulch waste
rock repository on June 25, 1996
73
Neutron probe counts collected from Mill Gulch waste
rock repository on July 23, 1996
............................................. ...............
75
N eutron probe counts collected from Mill Gulch waste
rock repository on August 16, .1996 .............................................................
77
viii
15.
16.
17.
18.
19.
20.
2 1.
22.
23.
24.
25.
Neutron probe counts collected from Mill Gulch waste
rock repository on September 24, 1996
.................................. .............
79
Neutron probe counts collected from Mill Gulch waste
rock repository on October 28, 1996 .............................................................
81
Neutron probe counts collected from Mill Gulch waste
rock repository on December 10, 1996
................................................
83
Neutron probe counts collected from Mill Gulch waste
rock repository on January 21, 1997 .............................................................
85
N eutron probe counts collected from Mill Gulch waste
rock repository on March 8, 1997
..............................................................
87
N eutron probe counts collected from Mill Gulch waste
rock repository on April 9, 1997
..................................................
89
Neutron probe count ratios collected from Mill Gulch waste
rock repository on May 22, 1996
.................. ...........................................
92
Neutron probe count ratios collected from Mill Gulch waste
rock repository on June 25, 1996
..............................................................
94
Neutron probe count ratios collected from Mill Gulch waste
rock repository on July 23, 1996
..............................................................
96
Neutron probe count ratios collected from Mill Gulch waste
rock repository on August 16, 1996 .............................................................
98
N eutron probe count ratios collected from Mill Gulch waste
rock repository on September 24, 1996
................................................
100
26.
N eutron probe count ratios collected from Mill Gulch waste
rock repository on October 28, 1996 .............................................................. 102
27.
N eutron probe count ratios collected from Mill Gulch waste
rock repository on December 10, 1996
................................................
104
N eutron probe count ratios collected from Mill Gulch waste
rock repository on January 21, 1997 ..............................................................
106
28.
ix
29.
Neutron probe count ratios collected from Mill Gulch waste
rock repository on March 8, 1997
.......................................................
108
Neutron probe count ratios collected from Mill Gulch waste
rock repository on April 9, 1997
.............................................................
110
31.
Inches o f water storage in the Lower bench - west tube
113
32.
Inches o f w ater storage in the Lower bench - center tube
30.
.....................
114
33.
Inches o f water storage in the Lower bench - east tube
......................
115
34.
Inches o f w ater storage in the Middle bench - west tube
.....................
116
35.
Inches o f water storage in the Middle bench - center tube
.....................
117
36.
Inches o f w ater storage in the Middle bench - east tube
.....................
118
37.
Inches o f water storage in the Top bench - west tube
119
3 8.
Inches o f water storage in the Top bench - east tu b e ...................................
120
39.
Monthly changes in water storage in the capping materials
on the lower bench o f the Mill Gulch waste rock re p o sito ry .....................
122
Monthly changes in water storage in the capping materials
on the middle bench o f the Mill Gulch waste rock repository...........
123
Monthly changes in water storage in the capping materials
on the top bench o f the Mill Gulch waste rock repository
124
40.
41.
....................
X
LIST OF FIGURES
Figure
1.
Page
The capping system used at the Mill Gulch waste rock repository
.........
4
.......................
5
2.
, A cross section o f the Mill Gulch waste rock repository
3.
Front view cross section o f the calibration apparatus
..................... 15
4.
Side view cross section o f the calibration apparatus
....................... 16
5.
The response o f TDR measurements and neutron count ratios
to additions o f water
..............................................................................25
6.
Neutron probe calibration
7.
A comparison o f monthly precipitation to cap and repository
............................................................................. 27
drainage totals for the lower bench
8.
...........................................
..............47
A comparison o f monthly precipitation to cap and repository
drainage totals for the middle bench ................................................................52
9.
A comparison o f monthly precipitation to cap and repositoiy
drainage totals for the repository t o p ................................................................56
10.
Neutron probe calibration data
............... ................................................. 69
jri
ABSTRACT
Waste rock produced by the mining industry may contain sulfide minerals, which
often oxidize to produce acid in the presence o f water. This acid production may lead to
acid rock drainage. Therefore, it is important to dispose o f sulfide - rich waste rock in a
way that will minimize exposure to water and the consequent release o f acid rock drainage
into the environment.
The 300 - foot thick Mill Gulch waste rock repository at the Zortman Mine was
capped with a series o f oxidized and clayey materials in 1992. The cap was designed to
minimize infiltration o f water into the repository and thus minimize the probability o f acid
rock drainage. The purpose o f this investigation was to evaluate the hydrology o f the Mill
Gulch waste rock repository in order to determine whether the capping system adequately
precludes infiltration o f precipitation into the repository so as to prevent gravitational
drainage o f water from the repository.
Repository water content was measured monthly over a 12 month monitoring
period using a neutron probe. Neutron probe data were collected from eight neutron
probe access tubes located on three different terraces on the Mill Gulch w aste rock
repositoiy. Neutron tubes varied in depth from 70 to 310 feet.
A laboratory method for neutron probe calibration in unconsolidated waste rock
was developed. A fifty gallon sample o f waste rock was oven dried and loaded into a
monitoring barrel, which was equipped with time domain reflectometry probes and a
neutron probe access tube for the entire profile. The response o f time domain
reflectometry and neutron probe measurements to calculated volumetric water additions
was monitored following additions o f 0.5 % volumetric water increments.
A neutron probe calibration for the waste rock material was successfully
generated. The relationship between the neutron count ratio and volumetric water content
was found to be linear with r = 0.96. The results o f the hydrologic study indicated that
much o f the Mill Gulch waste rock was at or above field capacity; thus water will drain
downward in response to gravity. Average drainage from the repository was estimated to
be less than the 14,3 inches o f precipitation received during the monitoring period. The
capping system.is thought to be effective at storing infiltration and promoting runoff from
the repository. In addition to precipitation, the repository received run - on from a large
unreclaimed topsoil stockpile located up gradient from the top bench o f the repository.
Run - on contributed to infiltration at the repository top.
I
INTRODUCTION
The Zortman mine is located approximately 150 miles north o f Billings, Montana
in the Little Rockies mountain range. The Mill Gulch waste rock repository at the
Zortman mine contains sulfide - rich minerals which, if left exposed to water and oxygen,
could produce acid rock drainage. The repository consists largely o f a cyanite porphyry,
which has pyrite mineralogy. The repositoiy was capped with 18 to 36 inches o f Emerson
shale, 24 to 36 inches o f oxidized waste rock, and 12 inches o f coversoil in order to
minimize infiltration o f precipitation into the repository and subsequent downward
drainage o f w ater from the repository. The repository top and benches have an additional
polyvinyl chloride (PVC) geomembrane liner overlying the Emmerson shale layer.
Exclusion o f precipitation from the repository may slow the rate o f acid production, which
results from the oxidation and hydrolysis o f pyrite by the chemical reaction:
FeS2 + 15/4 O2 + 7/2 H2O * Fe(OH)3 + 4H+ + 2 S 0 4'2
This study was conducted to evaluate the hydrology o f the Mill Gulch waste rock
repository in order to determine whether drainage o f water through the repository is likely
to occur.
Objectives
1)
Develop a neutron probe calibration to estimate the volumetric water
content o f Mill Gulch waste rock.
o
Using time domain reflectometry, develop a laboratory neutron
probe calibration for Mill Gulch waste rock with which to interpret neutron
probe data.
o
Evaluate laboratory water retention and drainage data in order to
assess the desorption characteristics o f Mill Gulch waste rock..
2)
Determine whether the Mill Gulch waste rock repository capping system
minimizes infiltration o f precipitation into the repository and subsequent
downward drainage o f water.
3)
Estimate the quantity o f drainage from the Mill Gulch waste rock
repository over a 12 month monitoring period.
3
BACKGROUND
Climatic Conditions
The Zortman mine is located in a semiarid region o f north-central Montana. The
top o f the Mill Gulch repository is at an elevation o f 5025 feet. During the study period
analyzed (May 1996 - M ay1997), the Mill Gulch repository received 14.72 inches o f
precipitation. Precipitation during Januaiy, February, and March was typically snowfall.
The average annual precipitation during 1995 and 1996 was 20.34 inches. The 14.72
inches o f precipitation received during the period o f analysis was unusually low in
comparison to the 30 year average annual precipitation (1941 - 1970) for the area, which
has been reported by the United States Soil Conservation Service (1980) to be greater
than 20 but less than 22 inches.
Site Description
The Mill Gulch waste rock repository was constructed as a head - of-v alley fill
and has a maximum thickness o f approximately 300 feet at the outer edge o f the
repository top and thins towards the toe o f the fill. The entire repository was capped
using a sequence o f materials (Figure I). An 18 to 36 inch clayey barrier which consists o f
Em merson shale immediately overlies the w aste rock. A tw o to three foot thick layer o f
low sulfur oxidized w aste rock was placed on top o f the shale, followed by twelve inches
o f coversoil. The repository was constructed with four terraces, in order to minimize
erosion and the development o f rills and gullies from runoff (Figure 2). Benches are back
sloped into the repository and sloped down gradient in order to facilitate removal o f runoff
from the repository. A PVC geomembrane was added to the capping regime on the
repository top and terraces, where w ater is otherwise less likely to run off than on slopes
This geom embrane immediately overlies the Emmerson shale.
Topsoil
12 inches
Oxidized w a s t e r o c k
2 4 - 3 6 i nches
G e o n en b r a ne
18-36 i nches
E n n e r s o n shal e
W aste rock
Note; G e o n o n b r a n e is p r e s e n t a c r o s s t h e n e a r f l a t r e p o s i t o r y t o o
a n d b e n c h e s b u t is a b s e n t on slopes.
Figure I
The capping sequence used at the Mill Gulch waste rock repository.
5
Schem atic o f
topsoil stockpile (n o t
R epository to p
■Neutron p r o b e a c c e s s
W aste
to
scale)
tubes
rock
Middle b e n c h
/ • N at iv e m a t e r i a l
142 f e e t
Lower b e n c h
500 f e e t
Figure 2. A cross section o f the Mill Gulch waste rock repository.
LITERATURE REVIEW
Cap Hydrology
Research has demonstrated that clay caps may not provide a significantly more
effective infiltration barrier for tailings impoundments located in areas o f low precipitation
than capping systems comprised o f non - acid producing fill material and coversoil
(Dollhopf et al., 1995). These investigators conducted a study at the Golden Sunlight
Mine near Whitehall, Montana in order to evaluate the hydrology o f several capping
systems for a tailings impoundment and to characterize the quantity o f recharge into the
impoundment under three different capping systems and one uncapped control. The
impoundment was designed to minimize infiltration into the tailings and the subsequent
oxidation o f the tailings materials, which results in acid production.
The capping systems evaluated by Dollhopf, et al. included: I) a cover consisting
o f a 55 inch layer o f oxidized waste rock followed by a 28 inch layer o f coversoil, 2) a
cover consisting o f a 32 inch layer, o f waste rock followed by a 28 inch layer o f clay and a
30 inch layer o f coversoil, and 3) a 50 inch layer o f borrow material followed by a 20 inch
layer o f coversoil. A control plot without any cap was also evaluated. It was found that a
cap was necessary to preclude precipitation from the impoundment, but that the clay
barrier did not significantly enhance the effectiveness o f the cap (Dollhopf et al., 1995).
Capping systems in arid and semiarid regions are often less elaborate then their
higher precipitation counterparts. In drier regions, where annual potential
evapotranspiration often exceeds precipitation, elaborate capping systems are often
deemed unnecessary. However, studies have shown that infiltration through a cap or
other porous media is influenced by many factors other than mean annual potential
evapotranspiration and precipitation. These factors include: seasonality o f precipitation,
piston flow, vegetation, and preferential flow (Stephens, 1994).
In areas where mean annual potential evapotranspiration exceeds mean annual
precipitation, the season during which precipitation is received plays an important role. If
precipitation is most intense during low temperature months, when evapotranspiration is
low, potential infiltration will be higher than that o f regions with similar water budget, but
receiving primarily warm season precipitation. Nichols (1987) found deep percolation
occurring on a site receiving less annual precipitation than potential evapotranspiration.
The site received proportionally high March precipitation, which exceeded seasonal
potential evaporation. Similarly, deep percolation can occur in arid to semiarid regions o f
proportionally high snowfall because snow melt contributes to high soil moisture during
the early spring months when temperature and evapotranspiration are low (Hakonson, et
al., 1992).
Soil w ater often moves through a profile as piston flow. By this process, water
added to the soil surface moves downward through the profile by displacing antecedent
soil moisture. Soil w ater content may not change as a function o f added water. Stephens
8
(1985) showed that piston flow may allow infiltrated water to move downward through a
soil profile which is less wet than the field capacity water content.
Vegetation plays a crucial role in determining the quantity o f infiltration through a
soil profile (Stephens, 1994). Studies have shown that deep rooted plants are more
effective at preventing deep percolation than shallow rooted grasses. Gee et al. (1989)
found that deep percolation through coarse soils with sparse grassy cover accounted for
most o f the water received by the site, while deep rooted shrubs were more effective at
intercepting percolation.
Macrbpores formed on a cap by plant roots, small animals, or fissures resulting
from freeze thaw cycles can facilitate preferential flow, effectively raising the rate o f
infiltration through the cap. Studies have shown preferential flow can account for 50 to
99 percent o f deep percolation through a soil profile (Sharma, et al., 1987).
Neutron Probe
The neutron probe is one o f the most accurate tools for measuring volumetric
w ater content through a soil profile commonly used (Carrijo and Cuenca, 1992). The
neutron probe can be lowered to any depth in a soil profile through an access tube to
obtain volumetric water content data for that depth. The neutron probe consists o f a
I
radioactive source, which emits fast neutrons, and a detector tube, which counts slow
neutrons. Fast neutrons thermalize to become slow neutrons when they collide with
hydrogen nuclei. Because the vast majority o f hydrogen atoms in a soil profile are
contained in w ater molecules o f the soil water, volumetric water content can be calculated
as a function o f the ratio o f slow neutron count to a background count obtained with the
probe in its shield. However, because a soil may contain other sources o f hydrogen and
non - hydrogen substances capable o f thermalizing fast neutrons, a soil specific neutron
calibration is required for eveiy soil monitored. Neutron probe calibration is the
dominating source o f error in volumetric water content measurements obtained by the
neutron probe technique (Haverkamp et al., 1984).
A hydrologic study o f a waste rock repository was conducted by Schafer and
Associates at the Golden Sunlight mine in Whitehall, Montana. N eutron probe access
tubes were installed at seven sites on the repository located on both reclaimed and
unreclaimed portions o f the repository, and monitored for one year. Results indicated
reduced infiltration on the regraded, capped, and revegetated portions o f the repository as
compared to the unreclaimed portions o f the repositoiy (Schafer and Associates, 1995).
A field neutron probe calibration was developed for this study. The investigators were
able to obtain 13 field calibration data points, most o f which were between 3.5 and 8.5
percent volumetric water content. Although particle size in the repository was highly
heterogeneous, a single neutron probe calibration was used for the entire repository. The
10
field calibration is given in Equation I, where Gv equals volumetric w ater content and NCR
equals neutron count ratio. This calibration had a correlation coefficient o f 0.77.
# , = 19.7 x A O ? + 2.3
[l]
Time Domain Reflectometrv
Time domain refiectometry (TDR) is a technique for measuring volumetric water
content in soils. The propagation velocity o f an electromagnetic pulse along a burned
transmission line is measured and used to calculate the dielectric constant o f the soil. The
dielectric constant is then used to calculate volumetric water content using an empirical
calibration equation.
Because the soil bulk dielectric constant is dominated by the dielectric constant o f
soil water, the dielectric constant o f any soil is mainly a function o f the volumetric water
content. Topp et al. (1980)-developed an empirical relationship between the volumetric
water content and bulk dielectric constant o f the soil. This relationship is given by the
third order polynomial relationship in Equation 2, where Gv equals the volumetric water
content o f the soil, and sbequals the soil bulk dielectric constant.
f t ™ = - 5-3 XlO'2 + 2.92 x IO-2 & - 55 x 1 0 - £ • / + 4.3 x 10+ a ’
[2]
Because the dielectric constant o f a soil is primarily a function o f soil water (Topp
and Davis, 1985), which has a dielectric constant about 20 times greater than mineral
materials, dielectric constant does not vary greatly with mineral makeup. Topp and Davis
(1985) also discovered that the dielectric constant o f a soil does not vary significantly with
temperature, soil type, or density. Minor changes in soil bulk dielectric constant due to
temperature were detected by Pepin et al. (1995). The temperature effect was found to
increase with soil water content. Research has shown that dielectric constant does not
vaiy significantly among soil textures ranging from clays to sandy gravels. Drungil et al.
(1989) found that the empirical TDR calibration expressed in Equation I was applicable to
gravelly soils containing coarse fragments.
A physically based TDR calibration was developed by Roth et al., (1990) which
accounted for the porosity o f the material and the geometric orientation o f the probe in
relation to the natural layering o f the material. According to this model, the volumetric
water content o f the material is a function o f the bulk dielectric constants o f all three
physical phases within the system, the porosity o f the material, and the geometric
orientation o f the probe. This model produced a calibration curve which is very similar to .
Topp’s calibration for volumetric water contents less than 50 percent (Or and Wraith,
1996).
In time domain reflectometry, electromagnetic pulses are generated by a coaxial
cable testing unit (TDR instrument) and transmitted through a coaxial cable to a probe
which is inserted in the soil. Both two - rod and three - rod probes have been found to
yield accurate time domain reflectometry data. (Kirkschether, 1.960), (Zegelin et al.,
12
1989). Reflection waveforms from the electromagnetic pulses are by the instrument and
interpreted to estimate pulse propagation velocity. Waveforms are sometimes difficult to
interpret. Reflections from the cable to probe interface, soil to air surface and other
discontinuities, including large voids that may exist in waste rock, can complicate
waveforms to an extent which poses a risk for misinterpretation and false readings.
One method for minimizing risks o f misinterpreting TDR waveforms is to create a
short circuit at the cable to probe interface in order to determine the point on the
waveform that represents the beginning o f the probe (Hook et al., 1992). Similarly, short
circuiting the end o f the probe can be used to identify the point on the waveform
representing the end o f the probe. A differential technique, such as waveform subtraction
enhances the accuracy o f waveform interpretation (Hook et al., 1992). In this method, the
waveform o f the shorted reflection is subtracted from the waveform o f the unshorted
reflection in order to locate the point on the waveform representing the location o f the
short circuit. This allows distinguishing o f reflections offthe cable to probe interface and
probe end from extraneous reflections within the measurement zone. A study by Hook et
al. (1992) employed shorting techniques coupled with differential techniques to simplify
waveforms and identify correct reflections. They found that these techniques “allow easy
and reliable waveform interpretation by unskilled operators or by automated system
software” .
MATERIALS AND METHODS
Neutron Probe Calibration
To calibrate the neutron probe in Mill Gulch waste rock, we evaluated the
response o f neutron probe and time domain reflectometry measurements to additions o f
measured volumes o f water to oven dried Mill Gulch waste rock. Neutron probe count
ratios were collected for the calibration material at known volumetric moisture contents
ranging from the oven dried condition to saturation, yielding a complete calibration
relationship. In order to identify the volumetric moisture content at which downward
drainage through Mill Gulch waste rock occurs in response to gravity, a drainage system
in the calibration apparatus allowed drainage to be observed and measured. Drainage
recorded during the laboratory calibration indicated that field capacity for the Mill Gulch
waste rock sample studied was five percent volumetric water content. Using this value as
an estimate o f in situ waste rock field capacity made it possible to identify zones within the
repository having volumetric water contents at or above field capacity. Homogeneity of
waste rock materials throughout the entire repository was assumed in order to extrapolate
the field capacity value and neutron probe calibration to the entire repository.
The primary function o f the time domain reflectometry (TDR) measurements was
to confirm the critical volumetric water content at which downward drainage occurred in
14
response to gravity by tracking the wetting front through the waste rock. Since TDR has
a much faster response time than the drainage system and has adequate spatial resolution
to quantify depth profiles o f water content, the critical moisture content could be
determined more accurately using TDR Barrel outflow confirmed interpretations o f TDR
data.
Calibration Material
Fifty gallons o f Mill Gulch waste rock having particle sizes ranging from less than
1/16 inch to 6.5 inches in diameter, were used as calibration material. The material was
oven dried at 40 degrees Celsius for six weeks. A subsample o f the dried material, having
a representative range o f particle sizes, was oven dried for 48 hours at 105 degrees
Celsius, and found to have an initial gravimetric water content o f 0.016%. The material
was loaded into the 55 gallon barrel in 70 pound increments. Each increment was tamped
in order to simulate in situ bulk density. Each waste rock increment had a similar particle
size distribution, so as to minimize gradation within the barrel profile. Bulk density
analysis o f Mill Gulch waste rock revealed that the material had an in situ dry bulk density
o f 15.40 pounds per gallon (1.85 g/cm3) before removal from the repository and a
repacked dry bulk density o f 13.19 pounds per gallon (1.58 g/cm3) in the calibration
barrel.
15
Instrumentation
Time domain reflectometry probes, a neutron probe access pipe, and a drainage
system were installed in a fifty-five gallon PVC drum (Figures 3 and 4).
2 inch s c h e d u le 40
s te e l a c c e s s tu b e
2.8 i n c h e s
W a s t e Rock
15 i n c h e s
30 i n c h e s
1/4 inch num ber 9
s ta in le s s s te e l rod
22.8 i n c h e s
36 i n c h e s
inch ?s
Cap
Sand
C o n c re te
inches
21.6 i n c h e s
Figure 3.
I inch well s c r e e n
Front view cross section o f the calibration apparatus.
16
2 in c h sc h e d u le 40
s te e l a c c e s s tu b e
2.8 ir c h e
W a s t e R ock
15 i n c h e s
1 /4 in c h n u n b e r 9
s ta in le s s s te e l rod
30 i n c h e s
36 i n c h e s
in ch es
-S and
C o n c re te
3.2 ir c h e s
21.6 i n c h e s
Figure 4.
I in c h well s c r e e n
Side view cross section o f the calibration apparatus.
Twelve 25 inch lengths o f % inch number nine stainless steel rods constituted the
time domain reflectometry probes. The rods were installed parallel to one another and at
2.4 inch vertical spacings. They penetrated the barrel horizontally so that water content
could be estimated for eight depths. Both ends o f the rods penetrated the barrel so that
one end o f each rod was accessible for making the electrical connection to the TDR
instrument, and the other end was accessible for creating a short circuit between rods to
enhance the ease o f wave form interpretation (Hook et al., 1992). Alligator clips were
used to connect the rods to the cable from the TDR. A conductive metal rod was used to
short circuit the ID R rods. The twelve rods were installed horizontally such that the
distance between the middle o f each rod and the horizontal center o f the barrel was six
inches. Nine o f the rods were installed to one side o f center, and the other three were
installed parallel and to the other side. Each TDR reading requires two rods, thus
allowing readings at eight different depths on one side, representing the profile from the
6.6 inch depth to the 23.4 inch depth, and tw o readings at different depths on the other
side, providing duplicate measurements for the profile from 13.8 to 16.2 inches. Rods
were spaced such that the duplicate measurements were centered on the point o f
measurement for the neutron probe.
A drainage system for the barrel was constructed so that field capacity volumetric
water content could be confirmed by observation o f outflow from the bottom o f the barrel.
The drainage system design was intended to minimize the response time between
downward rock drainage into the bottom o f the barrel and observable outflow, and to
minimize clogging with fine particles from the calibration material. The drainage system at
the bottom o f the barrel consisted o f schedule 80, one inch PVC, 20 slot well screen,
which sloped downward from the back o f the barrel to the front, penetrated the front o f
the barrel, and terminated four inches outside the barrel. Well screen was used to avoid
clogging by fine particles. The well screen was threaded for a plug at the front end, so
that drainage could be controlled. Concrete was used to build up the bottom o f the barrel
at the outer edges, creating a slope o f 6 :1 towards the drainage pipe. A layer o f 20 - 30
mesh silica sand was placed over the drainage system, so that the contacting surface with
18
the w aste rock w as flat and uniform. The thickest portion o f the sand layer, covering the
drainage pipe at the front o f the barrel, was 2.2 inches thick.
The neutron probe access tube used for the calibration was 2 inch schedule 40
steel pipe, the same type and diam eter as the tubes used to collect field neutron probe data
at the Zortm an M ine. The tube was installed vertically dow n the center o f the barrel,
after the drainage system was in place.
B arrel Preparation
A plastic 55 gallon drum was opened b y rem oving the entire lid w ith a saw.
V ertical lines, along w hich the TD R probes w ill be installed, w ere m arked. In order to
properly position these lines, a straight edge w as placed across the top o f the barrel so
that it passed through the horizontal center o f the barrel. A second straight edge was
positioned parallel to the first, so that its center was equidistant from the center o f the first
and the side o f the barrel. V ertical lines w ere m arked down the side o f the barrel from
each o f tw o points w here the second straight edge intersected the edge o f the barrel.
These lines w ere labeled “A ” . The second straight edge was then repositioned such that it
w as to the other side o f and parallel to the first, w ith its center equidistant from the center
o f the first and the side o f the barrel. V ertical lines w ere again m arked dow n the side o f
the barrel from each o f two points w here the second straight edge intersected the edge o f
the barrel. These lines w ere labeled “B ” .
A drill hole was marked at the center o f the effective column along each o f the
four TDR lines. The center o f the effective column was determined to be the plane which
was equidistant from the top o f the sand layer and the projected top o f the column o f
calibration material. A three inch empty buffer zone was left at the top o f the barrel to
avoid w ater loss due to overflow in case water should unexpectedly pond on the surface.
Nine drill hole markings, centered on the vertical center o f the effective column
and at 214 inch vertical spacings, were marked along each o f the two “A” lines. Three
remaining drill holes were marked along the “B” lines, centered on the vertical center of
the effective column and at a vertical spacing o f 214 inches. Holes were drilled at each of
the markings using a 14 inch bit.
Drainage System Installation
A hole for the drainage pipe was created by using a I 3/8 inch hole saw, to drill a
hole in the side o f the barrel, such that the center o f the hole is two inches from the bottom
o f the drum, and equidistant from line “A” and the corresponding line “B” .
The drainage pipe was installed by running a 2.5 foot length o f one inch schedule
80 PVC well screen through the hole into the barrel so that the screen ran the entire
diameter o f the barrel, at a slope o f 4 :1 towards the outlet. The exposed end o f the screen
was threaded to accommodate a plug, and the inside end o f the screen was capped.
Silicone was applied liberally around the well screen on both sides o f the barrel, to prevent
w ater loss through leakage and evaporation.
A concrete drainage channel was created in the bottom o f the barrel Side slopes o f
the channel were 6 :1 toward the drainage pipe, so that the bottom o f the well screen was
completely covered and there was no gap between the well screen and the concrete floor.
A sand layer was created by pouring a level layer o f sand over the entire floor o f the
barrel, covering the pipe to a maximum 2.2 inch depth.
Installation o f Equipment and
Calibration Material
A tw o inch schedule 40 steel pipe neutron probe access tube was installed
vertically at the center o f the barrel. The bottom end o f the tube was plugged and sealed
to prevent the entrance o f water into the tube.
The effective column o f the barrel was filled with calibration material. Waste rock
was added to the barrel in seventy pound increments. All increments were tamped with a
sledgehammer, in order to compact the rock to most closely simulate field conditions
without causing breakage o f the rock. All increments were comprised o f material having
similar particle size distribution.
Time Domain Reflectometry probes were installed, beginning with the lower
probes. As the waste rock level rose to just below each set o f !4 inch holes, the rods were
installed through those holes. Each rod was installed horizontally through the barrel. The
rods were centered in the barrel such that an equal length o f each rod stuck through the
front and back o f the barrel. Silicone was applied liberally around the each rod to prevent
water loss through leakage and evaporation.
The point o f measurement o f the neutron probe was centered on the vertical center
o f the effective column and the neutron probe cable was marked so that the neutron probe
could be easily and accurately returned to this depth. In this case, the point of
measurement was determined to be equidistant from the center o f the detector tube and
the center o f the source. This point was located 4.6 inches from the bottom o f the probe.
Because o f this, the point o f measurement was 4.6 inches above the bottom o f the neutron
probe access tube when the probe was lowered until it hit the bottom o f the tube. The
measuring point was then located by lowering the probe to the bottom o f the neutron
probe access tube, and then raising it 10.2 inches to the vertical center o f the effective
column.
Calibration Protocol
After the calibration barrel was prepared and back filled with calibration material,
TDR measurements were collected from all ten probes. Five neutron probe shield counts
were then obtained with the neutron probe over the calibration neutron probe access tube,
and the radioactive source in its shield. The shield counts were averaged to obtain the
mean shield count. Five neutron probe counts were then obtained at the depth o f 15 in.
22
the center o f the effective profile,, and averaged to produce the mean at depth count. A
single neutron count ratio for the oven dry condition was calculated using these data.
The mean volumetric water content o f the waste rock was then raised by 0.5% by
adding 0.25 gallons o f Water to the barrel. After the addition o f water, the barrel was
sealed across the top using six mil plastic sheeting taped liberally to the barrel in order to
prevent water loss by evaporation. The added water was allowed to percolate for 24
hours before obtaining TDR readings and neutron count ratio for a mean barrel volumetric
water content o f 0.5% using the procedure described for oven diy TDR readings and
neutron count ratios.
It was found that the TDR readings changed over the first seven hours after the
addition o f water, but did not change over the period o f time from seven hours to 24
hours after the addition o f water. Twenty four hours was used as the standard delay
between time o f addition o f water and time o f measurement taking in order to ensure that
the profile w ater content was steady at the time o f measurement.
W ater additions and measurements were continued until drainage from the barrel
was observed. The drainage pipe was then capped so that the waste rock could be
saturated to obtain a final calibration point. W ater was added to the barrel until it
permanently ponded on the surface o f the waste rock. The saturated TDR readings and
neutron count ratio were then obtained.
23
Calibration Calculations
The volume o f the column o f calibration material in the barrel was calculated to be
50.17 gallons and equals the volume o f the drainage system, instrumentation, and the
empty portion o f the barrel subtracted from the total volume o f the barrel, as given by
Equation 3, where v = the effective volume o f calibration material, Vtot = the total barrel
volume, Vo = the volume o f the empty portion o f the barrel, and vd= the volume o f the
drainage system, and v, = the volume o f the neutron probe access tube and TDR probes.
v = Vtot- ( vO+ v , - + ^ )
v = 60.32 - (4.44 + 0.53 + 5.16) = 50.19 gallons
[3]
The percent volumetric water added to the barrel was calculated by dividing the
total volume o f water added by the effective volume o f the calibration material, using
Equation 4, where 0V= the calculated mean percent volumetric water content o f the
calibration material, v = the volume o f the calibration material, and Vi = the cumulative
volume o f water added to the barrel.
Ov = — xlOO
v
[4]
24
Time domain reflectometry volumetric water contents were calculated by using the
apparent length o f transmission line, which varies with propagation velocity, to solve for
the soil bulk dielectric constant according to Equation 5, where eb = the soil bulk dielectric
constant, La = apparent transmission line length, and L = actual probe length.
The soil bulk dielectric constant was then used to calculate volumetric water
content according to Equation 2.
During the interval between 5.5 percent and 11.4 percent volumetric water added
to calibration material, TDR and neutron count readings did not respond to volumetric
water additions. These data are identified in Figure 5, which illustrates the response o f
time domain reflectometry and neutron count ratios to increases in percent volumetric
water added to the calibration material. Additions o f water from 5.89 to 12 percent by
volume did not result in responses in TDR or neutron count ratio, which were constant
until visible outflow from the barrel occurred. Therefore, it is assumed that water added
during this interval was progressively displacing water held by the calibration material at
the measurement depths, until the entire profile and sand layer o f the drainage system
reached field capacity, at which time outflow from the barrel was observed. The close
correlation between TDR and neutron probe data support this interpretation.
25
Critical vd unetric water content S i
0.1
«
♦ Vdurretric \Aferter Content by TDR-— Vduretric Water Content Added
■ Neutron Count Ratio
Volume of Water Added (gal)
Figure 5.
The response o f TDR measurements and neutron count ratios to additions
o f water.
The neutron count ratio at which increases in percent volumetric water added to
calibration material did not result in an increase neutron count ratio obtained from the
calibration material was identified as the critical neutron count ratio at which water will
drain from Mill Gulch waste rock in response to gravity. This value was found to equal
0.25. Neutron probe calibration data are found in Appendix A.
The volumetric water content at which TDR readings failed to respond to
additions o f water to the calibration material was calculated by averaging the TDR
readings for the neutron probe measurement zone at mean barrel volumetric water
contents between 5.5 percent andT 1.4 percent, and equaled 5.89 percent.
The laboratory calibration equation was obtained by performing a linear regression
o f volumetric water content o f the calibration material against neutron probe count ratio,
and is presented along with the factory calibration in Figure 6. The correlation coefficients
for the calibration equations are 0.98 for count ratios less than 0.25, which represents the
neutron count at which field capacity was reached. Data which were obtained while the
calibration material was progressively reaching field capacity and actively draining into the
drainage system was not included in the linear regression.
Linear regression yielded the calibration relationship described by Equation 6. By
applying the final calibration equation (Equation 6) to the critical neutron count ratio, the
critical volumetric water content at which water will drain from Mill Gulch waste rock in
response to gravity was found to equal 5.89 percent.
f t = 27.479 x JVrC K -0 .9 7 6
[6]
In neutron probe calibration equations, Ov equals the percent volumetric water
content and NCR equals the neutron count ratio for a given depth increment.
VWC=NCRx45.455-5
VWC“ NCRx27.479-0.976
----- Factory Calibration
^"■L aboratory Calibration
Neutron Count Ratio
Figure 6.
Neutron probe calibration.
Field Data Collection
Neutron count measurements were collected from the Mill Gulch repository on a
monthly basis for one year. Neutron count data are presented in Appendix B
Eight neutron access tubes located on three different benches on the repository
were monitored monthly from May o f 1996 through April o f 1997. Three access tubes
located on a lower bench o f the repository penetrate to a depth o f 70 feet and terminate
five feet into the native undisturbed geologic material (Figure 2). Three access tubes on
an intermediate bench penetrate to a depth o f 150 - 160 feet and terminate ten feet into the
undisturbed geologic material. One access tube located on the top o f the repository
penetrates to a depth o f 2 0 1 feet and terminates approximately 105 feet above the
undisturbed geologic material, and a second access tube on the repository top penetrates
to a depth o f 318 feet and terminates 15 feet into the undisturbed geologic material.
Neutron probe readings were taken with a Troxler 100 millicurie neutron probe
with a Americium-Beryllium source. Readings were taken in increments which allowed
water content to be measured in each layer o f the capping sequence. Readings wer e taken
every six inches in the capping materials from a depth o f 6 inches to a depth o f 6 feet.
From 6 feet to 10 feet, readings were taken every one foot. For the repository profile
below 10 feet, readings were taken every 5 feet. For the deepest tube, readings were
taken every 2 feet below the 300 foot depth, in order to obtain more precise water content
data for the transition from waste rock to undisturbed geologic material directly
underlying the repository.
For each tube, a background neutron count was obtained by calculating the mean
o f five readings taken with the neutron probe positioned over the tube and in its shield.
Background count data are presented in Appendix B.
Precipitation data were collected for the one year period from a weather station
located approximately 1A mile north o f the neutron tubes at the top o f the repository. The
Belfort Instrument Company weighing precipitation gage was equipped with an Alter style
wind screen.
Calculations
A neutron count ratio was calculated for each at depth reading by dividing the at
depth neutron count by the mean background count according to Equation 7.
NCR =
NC
BC
[7]
In this equation, NCR equals the neutron count ratio for the depth increment, NC
equals the neutron count reading for the depth increment, and BC equals the mean
background count for the tube. Count ratios for each depth increment on each date are
presented in Appendix C.
Volumetric water content was calculated by applying the neutron probe calibration
presented above to neutron count ratio data. AU MUl Gulch waste rock was assumed to
be similar to the calibration material. The standard factory calibration was applied to the
capping materials, because the capping sequence is comprised o f relatively thin layers o f
different types o f materials and therefore could not be adequately characterized by a field
cahbration. The standard factory caUbration was assumed to be more apphcable to the
capping materials than the laboratory calibration. A laboratory caUbration was produced
for the repository waste rock material because wet conditions at accessible repository
30
depths and the unconsolidated condition o f the waste rock impeded field calibration
efforts.
The standard factory calibration used for the capping material neutron probe data
established the relationship between volumetric water content and neutron count ratio
according to Equation 8.
Qv = 45.455 x A O ? - 5
[8 ]
The laboratory calibration used in processing neutron probe data for Mill Gulch
waste rock is represented by Equation 9.
Ov = 27.479 x CR - 0.9755
[9]
Changes in water storage within the capping materials and the repository contents
were calculated on a month to month basis. W ater storage for each tube at each depth
increment was determined by multiplying the length o f the depth increment by the percent
volumetric water content according to Equation 10.
W =I x O v
[1 0 ]
In Equation 10, FTequals the water storage in inches within a given depth
increment, I equals the length o f the depth increment in inches, and Ov equals the percent
volumetric water content for the depth increment. Drainage from each tube was estimated
by summing the negative changes in storage for each month, and infiltration into the
repository was determined by summing the positive changes in water content for each
month. W ater storage and precipitation data are presented in Appendix D.
Evapotranspiration was assumed negligible below the PVC geomembrane, but may have
contributed to some o f the water loss from the topsoil and oxidized waste rock layers o f
the cap. Because there was minimal vegetation at the site during the period o f evaluation,
evapotranspiration was not accounted for in drainage calculations.
RESULTS
Drainage Analysis
The Mill Gulch waste rock repository received a total o f 14.26 inches of
precipitation during the 12 month period o f analysis. Drainage from the repository and
repository cap ranged from 5.31 inches from the area monitored by the Lower bench - east
tube to 23.70 inches from the area monitored by the Top bench - west tube (Table I).
Monthly cap and repository drainage did not appear to respond immediately or
consistently to precipitation.
A large unreclaimed topsoil stockpile located up gradient from the top bench o f
the repository may have contributed run - on to the repository top. Run - on has been
observed ponding on the top bench. No PVC liner is present directly under or within an
approximate 50 foot distance from the topsoil stockpile. Therefore, ponded run - on
could have infiltrated into the repository. Infiltration is assumed to be primarily vertical,
with minimal lateral movement. Therefore, run - on from the topsoil stockpile could have
greatly influenced water content o f the material directly underlying the repository top, and
may account for some o f the increased drainage reported from the top bench tubes.
Because much o f this run - on is slowed by infiltration through the topsoil stockpile, with
eventual release at the stockpile toe, it is not likely that run - on was consistently
33
concurrent with precipitation event. Lag time between precipitation and run - on probably
diminished correlation between precipitation events and drainage.
Table I.
Monthly precipitation and drainage totals from the Mill Gulch waste rock
repository and cap.
Lower Bench
Month
June
July
August
Septem ber
O ctober
December
January
M arch
April
Total
Precipitation
Cap
3.29
0.00
1.04
1.08
0.41
0.32
3.13
0.00
0.95
0.00
1.96
0.00
1.35
000
0.83
0.01
1.39
0.02
14.26
1.52
Drainage (inches)
W est Tube
C enter Tube
E ast Tube
Repository Total Cap
Repository Total Cap
Repository
0.77
0.77
0.00
0.00
0.00
0.00
0.00
0.00
1.08
0.00
0.13
0.13
0 56
0.00
0.71
1.11
0.26
000
0.26
0.00
0.00
1.57
1.57
0.11
2.06
2.17
0.35
1.40
0.00
0.00
0.11
0.05
0.16
OOO
0.00
0.00
0.00
0.00
1.06
1.06
OOO
0.03
2.91
2.91
1.34
OOO
1.34
OOO
2.97
0.00
0.01
0.13
0.76
0.89
0 00
0.00
0.00
0.02
1.17
0.00
1.17
OOO
0.00
5.96
7.48
3.12
4.06
7.17
0.91
4.40
0.00
0.56
0.00
1.75
0.00
0.03
2.97
0.00
0.00
5.31
M iddle Bench
g
Precipitation Cap
3.29
0.00
1.04
1.58
0.32
0.39
3.13
0.00
0.95
0.29
1.96
0.00
1.35
0.00
0.83
0 12
I 39
0.00
14.26
2.38
D rainage (inches)
West Tube
C enter Tube
East Tube
Repository Total Cap
Repository Total Cap
Repository Total
1.78
1.78
0.00
0.22
0.22
0.01
0.00
0.01
0.66
2.24
1.17
0.00
1.17
1.03
0.00
1.03
0.00
0.39
0.35
0.00
0.35
0.53
2.65
3.18
1.32
1.32
0.00
1.77
1.77
0.00
1.74
1.74
0.00
0.29
0.59
0.00
0.59
0.00
I 39
1.39
1.29
1.29
000
000
0.00
0 26
0.00
0.26
4.99
4.99
0.00
4.18
4.18
0.00
4.35
4.35
0.00
0.12
w a ila b le
0.85
0.85
0.00
000
o.ool 0.00
0.00
0.00
10.88 13.26
2.11
6.17
8.28|
1.83
10.13 11.96
I
Month
June
July
August
Septem ber
O ctober
December
Jan u ary
M arch
April
Total
Top Bench
Month
June
July
August
Septem ber
O ctober
December
Jan u ary
M arch
A pril
Total
Precipitation Cap
3.29
0.00
1.04
0.96
0.32
0.00
3.13
0.00
095
0.26
1.96
0.43
1.35
0.00
0.83
1.39
0.46
14.26
2.12
D rainage (inches)
W est Tube
Repository Total Cap
Repository Total
0.30
0.30
1.93
4.86
6.78
0.00
0.96
000
0.03
0.03
0.00
0.00
0.02
0.00
0.02
6.97
6.97
0.22
6.46
6.68
0.00
0.26
0.30
3.30
3.60
2.90
3.33
0.26
0.00 r 0.26
7.48
7.48
0.00
6.33
6.33
n o d a ta a v a ila b le
0.00
17.65
0.46
19.76
0.00
2.72
0.00
20.97,
0.00
23.70
It should be noted that during the months o f high drainage, water contents were
slightly lower than the previous month throughout the entire repository profile. Unless
water recharge was from a source other than precipitation, it is highly unlikely that an
entire 300 foot profile would lose a consistent amount o f water storage in one month and
then return to the previous water content the following month. For this reason, it is
possible that reported decreases are the result o f an equipment malfunction. Because the
tubes on the top bench intercept a much longer repository profile than the other tubes, the
effect o f this type o f error would be amplified. An equipment malfunction was discovered
at the end o f the monitoring period which caused neutron probe readings to be falsely low.
The malfunction caused neutron counts to be up to 600 counts low due to a display
malfunction in the hundreds place. Because field neutron counts typically ranged from
3,000 to 23,000, this error could have caused up to 20 percent error. It is not known
whether this malfunction occurred during field data collection.
In principle, water added to a profile which is more wet than field capacity will
displace water downward without causing an increase in volumetric water content. Thus,
water may have moved through the repository profile undetected by the neutron probe.
For this reason, drainage may have been greater than calculated. This piston displacement
phenomenon was observed during the laboratory calibration o f the neutron probe for Mill
Gulch waste rock. After the volumetric water content o f the calibration material had been
raised above 5 percent, further additions o f water did not result in significant changes in
neutron count ratio or TDR volumetric water content, but did result in drainage. The
35
neutron count ratio and TDR volumetric water content responded only when the drainage
was capped to prevent further drainage and the calibration material was wetted to
saturation. For this reason, drainage calculations for the Mill Gulch repository represent a
minimum value, discounting the previously mentioned equipment malfunction.
Volumetric water content data for each depth suggest zones o f relatively dry waste
rock material interspersed within zones o f waste rock which are at or above field capacity.
It is likely that the more wet zones have a more fine texture and higher water holding
capacity than the calibration material. Therefore, these zones o f higher w ater content may
not drain at the calculated field capacity volumetric water content o f approximately six
percent. It is estimated that approximately 58 percent o f the volume o f the Mill Gulch
repository has a higher water holding capacity than the calibration material.
The heterogeneity o f the material in the Mill Gulch waste rock repository creates a
condition where lenses o f material having a variety o f average particle size are likely to
exist. The materials used in the calibration exercise consisted o f a well graded mixture o f
particles ranging in size from less than 1/16 inch in diameter to 6.5 inches in diameter.
Well graded mixtures have a uniform distribution o f a range o f particle sizes. It is
probable that lenses o f poorly graded material having an average particle size o f greater
than or less than the average particle size o f the calibration material exist. Such lenses
would have respective water holding capacities o f less than and greater than the
calibration materials. For this reason, zones o f material which consistently have a lower
water content than the material directly above do not necessarily represent drainage
barriers. It is more likely that these zones represent layers o f coarse material which have a
high percentage o f void space and lower water holding capacity than the calibration
material. Such layers would drain quickly into underlying materials. Similarly, zones o f
material which consistently have water contents exceeding that o f the saturated calibration
material represent lenses o f fine material.
During repository construction, larger particles (boulders) tend to form a rubble
zone in the lower areas o f each lift, creating a lens o f very coarse material, while finer
particles tend to remain in the upper zones o f each lift, where they are compacted by
equipment and haul traffic, forming a lens o f fine textured material with higher water
holding capacity. These lenses are likely to form at depth intervals which approximate the
thickness o f each lift.
For instance, at the depth increment from 52.5 feet to 57.5 feet for the Lower
bench - east tube, the volumetric water content is consistently less than the calibrated field
capacity volumetric water content value o f 5.89 percent (Table 2). The volumetric water
content o f the material directly above this increment is estimated at well above field
capacity, indicating that this zone o f decreased moisture is probably a rubble zone
containing void space. Another zone o f slightly decreased water content can be observed
in this tube at the 27.5 - 37.5 foot depth increment. The interval between these two zones
o f decreased moisture content is 30 feet, which is a likely lift thickness for repository
construction.
37
Table 2.
Volumetric water contents for the Lower bench - east tube.
C a p p in g M a te r ia ls
____________
JLiepth
!Date
15-21-96
IIn c re m e n t (ft) IL ithology
W.Z5 - 0.75
J T h i s z o n e is u n d e r c o n s t r u c t i o n .
jO.75 - 1.25
Jl .2 5 - 1.75
i to p s o il
I ------------- i
jl.7 5 - 2.25
!o x id iz e d w a s te ro c k
I
9.771
j-2.25 - 2.75
!o x id iz e d w a s te ro c k
14.09;
42.75 - 3.25
Io x id iz e d w a s te ro ck
15.35.
|i 2 5 - 3.75
Io x i d i z e d w a s t e r o c k
L '7 .3 0
13.75 - 4.25
E m m c rs o n s h a le
i
33.16!
j4.25 - 4.75
IE m m c r s o n s h a l e
3 7 .4 1 1
14.75 - 5.25
IE m m c rs o n s h a le
i 36.71 j
6-24-96 !7-22-96
8-15-96 19-24-96
I
I
7.53
12.44
14.18
15.09
16.50
30.10
38.60
36.95
34.86 i
34.88 i
32.40,
5.40
11.68
14.01
14.69
16.73
32.00
39.34
37.38
35.57
34.99
33.51
19.921
19.56
18.97
9.29!
9.61
20.831
20.69
19.50
9.53
9.601
6.58
6.011
5.78,
8.671
7 .4 11
j
8 .2 2
8 .1 b )
8.49;
454.5 - 5 7 . 5
6 03
6.061
6.09 :
--------- ------------------------- 1____ 4,69!
4.83|
4.94
I5 7 -5 '
-------- ^ llvcmulcr""-------- '------- 6,94-____ TO Ii____ 6.96.
:-'Z ;6 ,
7.327.38.
7.07
6.461
6.08|
6.031
8.881
7.70)
8.73 j
6.34 :
4 ^
7.141
7.091
I
34.28 j
32.771
30.16'
J
I
I
j
17 45
17.61
17.10
9 .1 1
j
9 .3 7
19.0 8 1
18.42
17.73
9.26
9.281
6.34
5.84
5.81
8.39
7.42
6.371
675|
5-831
8.621
7-58 j
IE m m e rs o n s h a le
E m m e rs o n s h a le
I E m m e rs o n s h a le
IJ . 0.07
V o lu m etric W a te r C o n te n t (% )
I
12.42
14.73
16.00!
16.82
19.39
33.82
37.96
36.82
35.18
33.87
31.84
15.75 - 6.50
56.50 - 7.50
10-29-96 12-10-96 1-21-97 13-3.97
I
12.25
13.68
14.341
15.18!
17.09
30.43 i
38.44
35.92
34.74
33.65
32.42 i
9.73
12.92
13.86
14.45
16.09
31.62
38.79
36.42
35.27
34.01 :
32.36
20.74
20.37
20.05
9.34
9.50
20.83
21.421
20.329.221
9.29!
6.44
53)31
5.90:
I
17.64'
15.39!
12.88:
13.90
14.79
16.53
31.06:
38.641
36.26,
34.85'
34.82!
32.50!
15.201
22.141
22.50!
20.91!
14.86!
15.73:
29.14!
37.891
34.73!
32.62!
32.02!
30.681
16.05!
24.04:
24 10'
22.131
15.711
18 34!
3 0 .9 1i
37.92
37.12:
35.05:
34.41!
32.911
21.16
22.05
20.88
9.07
9.39
6.26!
5/77
5.87
8.52
7.53
8.46
6.15
<80!
6.981
6 98:
20.14
20.99
19.73
8.56
8.60
6 52
21.41
22.63
21.16
8.85
9.37
6.28
5.84
5.60
I
14.031
17 67?
id
23 45?
Ifi Isi
17 563
31 0537.601
3 6 *>5j
34.95
34. 68J
33.45]
W a s te R o ck
57.5 - 8.5
8 .5
- 9 .5
9.5 - 10.5
10.5 - 17.5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
jwiusie mck
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
!waste rock
6.32 :
5.891
8.32:
7.42!
8.57:
6.16 :
<75
6.65;
6.88
8 .6 8
7.58'
8.38'
6.05
<63
6.92
7.12
5.47
5.53
7.99
K 38
6 .9 7 1
7 33
7.93:
8 28
5.69!
6 04
444!
U T
6.401------6.561
6.861 "
21 60
22 65
21 3 0
9 10
9 22
6 31
5 90
5 61
8 35
7 36
8 48
5 78
6.98
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
The Lower bench - west tube reveals a zone o f decreased water content from the
37.5 foot depth to the 62.5 foot depth, not including the interval from 52.5 feet to 57.5
feet (Table 3). This may indicate the presence o f the rubble zones from the bottom two
lifts o f the repository. The more wet depth increment from 6.5 to 17.5 feet probably
represents a compacted layer o f fine material that formed at the top o f the final lift of
waste rock.
38
Table 3.
Volumetric water contents for the Lower bench - west tube
C a p p in g M a te r ia ls
D ate
L
!D ep th
!in c re m e n t (ft)
to.25 - 0.75
0 .7 5 - 1 .2 5
1.25 - 1.75
1.75 - 2.25
32.25 - 2.75
2.75 - 3.25
1325 - 3.75
33.75 - 4.25
4.25 - 4.75
4.75 - 5.25
55.25 - 5.75
15.75 - 6.50
!L ilhologv
topsoil
topsoil
oxidized waste rock
Ioxidized waste rock
!oxidized waste rock
ioxidized waste rock
oxidized waste rock
oxidized waste rock
IEmmcrson shale
IEmmcrson shale
IEmmcrson shale
IEmmcrson shale
5-21-96
_____
12.33
16.40
17.30
16.00
31.531
36.48'
34.31,
33.531
31.18
6-24-96
7-22-96
8-15-96 19-24-96
10-29-96 12-10-96 1-21-97 13-5-97
V o lu m e tric W a te r C o n te n t ( % )
,
14-9-97
8.771
15.71
14.82:
14.92
15.79
16.27,
15.61
29.07
36.79
34.27!
34.91!
34.01
9.94
13.63
17.69
19.45
19.59
20.14
31.37
36.68
34.14
33.95
32.54
3.37
9.34
14.12
16.12
16.15
15.81
26.75
37.26
34.35
34.04
32.85.
1.44!
8.33 1
13.40 1
15.86:
16.21
15.67:
28.47!
37.47!
34.05:
32.84 i
28.731
10.56
13.02
15.02
15.72
16.75
15.92
27.60
36.26!
33.20!
32.71,'
31.74!
7.95
11.80
14.58
15.93
16.84
15.82
27.24
37.15!
33.89
33.79
32.92
18.90
14.84
16.34
17.60
10.64
8.98
8.64
7.25
8.45
3.87
4.09
4.49
7.11
19.80i
15.90
17.22!
18.63
11.14
9.20
19.97
15.97
17.48
18.79
10.78
9.05
8.56
7.22
8J91
4.03
4 .3 3 1
4.411
7.23!
3.24!
6 90!
9.30!
19.361
15.69!
17.32
19.00
19.19
23.36
16.48
16.98
18.31
18.98
19.51 i
20.01
10.92!
10.79
8.82
9.02
8.38
8.72
8.611
7.32
7.16*
8.78
3.58 — 3 9 6
3.82
4.36
4.34:
4.64
7.24
7.08
3.16!
3.01
6.98
6.74;
9.54
9.18!
4.62!
19.04:
25.95
25.38
18.55
16.65
15.29
27.95.
36.39
33.801
34.45 i
33.68
1.06!
19.87
25.501
25.74
18.65
18.66
15.98
27.32
36.33
33.20
33.75
32.78
6.851
16.46;
20.663
25.073
19.06]
17.153
15.964
27.42
36.443
33.64]
3 3 .5 1j
33.431
19.92
16.93
1896
19.86
10.35
8.39
8.29
6.91
8.15
3.61
4.15
4.32
6.79
2.82
6.69
8.73
2 0 .1 0
20.59
16.84
18.97
20.19
10.74
8.59
W a s te R o ck
6 J O - 7.50
7.50 - 8.50
18.50 - 9.50
9.50 - 10.50
10.50 - 17.50
17.50 - 22.50
22.50 - 27.50
27.50 - 32.50
32.50 - 37.50
37.50 - 42.50
42.50 - 47.50
47.50 - 52.50
J 2 .5 0 - 57.50
57.50 - 62.50
■62.50 - 67.50
567.50 - 72.50
j waste rock
Iwaste rock
(waste rock
(waste rock
(waste rock
(waste rock
(waste rock
(waste rock
(waste rock
(waste rock
waste rock
iwaste rock
i waste rock
!waste rock
I waste rock
!native material
18.72
14.41
15.88
17.58
10.64
8.93
8.73
7.28
8.79
3.98
4.31
J____
7.29:
3.151
6.97!
9.311
2.88
6.83
9.15
8.88
7.46
8.68
3.83
4.29
4.56
7.36
3.10
7.01
9.16
10.66
8.80
8.14
6.92
8.61
3.84
3.97
4.59
7.04
2.85
6.54
8.96
16.58
18.74
19.56
10.33
8.67
8.36
6.97
8.08
3.83
4.12
4.241
6.881
2.851
6.48|
8 .8 6 !
8 .1 0
7.18
8.56
3.96
4.24
4.42.
7.10
3.00
6.63
8.70
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
The Lower bench - center tube shows a zone o f decreased w ater content over the
depth increment from 32.5 feet to 37.5 feet, and from 52.5 feet to 62.5 feet (Table 4).
These data confirm the presence o f a layer containing very coarse fragments between the
Lower bench - east tube and Lower bench - west tubes at the depth between 32.5 feet and
62.5 feet.
<
—
39
Table 4.
Volumetric water contents for the Lower bench —center tube
C a p p in g M a te r ia ls
I
I
!D ate
5-21-96 6-24-96 !7-22-96 18-15-96 19-24-96 10-29-96 12-10-96 , 1-21-97 13-5-97
>4-9-97
L
_ ------------!D e p th
I
I
!in c re m e n t (ft) L ith o lo g y
V o lu m e tric W a te r C o n te n t (% )
0.2 5 - 0.75
This zone is under construction, j
I
I
_
I
I
I
i 7.19'>97
*0.75 - 1.25
topsoil
9.41
8.53
15.29!
21.52 ! 19.7154 16.6995
I
1.25 - 1.75
Iiopsoil
I
I
4.52
9.61
8.571
15.99
15.3Ii
15.551
25.35 25.2048 22 3343
1.75 - 2.25
oxidized waste rock
13.56:
15.70!
16.06!
15.071
16.12:
15.92:
15.18
19.171
19.30
23.83
2.25 - 2.75
15.13!
17.36
15.961
15.30!
16.18
15.70!
15.18'
16.211
17.19'
20.55
12.75 - 3.25
oxidized waste rock
16.01
17.11
15.82
15.15!
15.69
15.66
14.921
14.61
14.371
17.61
325 - 3.75
oxidized waste rock
15.89
17.57
iI T ?
15.351
16.17
15.51!
24.101
15.57
16.15!
17.07
3.75 - 4.25
oxidized waste rock
26.02:
24.64
23.57
23.38
24.11!
22.14
38.06
23.05
23.46!
22.89
4.25 - 4.75
Emmcrson shale
38 14:
37.81
37.66
38.881
38.03
38.071
35.46,
37.77
36.72 j
37.12
4.75 - 5.25
Emmcrson shale
35.191
35.30
36.84
36.34|
35.68,
35.54:
34.44,
36.07
35.18
35.47
5.25 - 5.75
Emmcrson shale
34.36
35.04
35.55
35.08
34.34
34.48!
35.69
34.52
34.24|
34.47:
5.75 - 6.50
Emmcrson shale
35.47!
35.66
36.09
35.98
35.471
35.54
34.22
35.33
34.45!
3 5 .6 0 ’
|6.50 - 7.50
Emmcrson shale
34.12!
34.39
35.641
35.12
33.70!
34.42:
38.241
34.26
34.03:
34.40
W a ste R o ck
7.50 - 8.50
8.50 - 9.50
19.50 - 10.50
10.50 -1 7 .5 0
17.50 - 22.50
22.50 - 27.50
27.50 - 32.50
32.50 - 37.50
37.50 - 42.50
42.50 - 47.50
47.50 - 52.50
52.50 - 57.50
$57.50 - 62.50
62.50 - 67.50
O /.Su - 72.50
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
!native material
I
i
24.60
23.58
21.18
10.01
9.20
9.43
5.88
4.13
6.43
7.54
8.26
5.02
4.51!
7.44,
7.36:
24.72
24.04
21.91
25.18
23.84
22.01
10.16
9.09
9.29
5.98
4.30
6.53
7.38
8.52
5.05
4.53
7.46
7.64
10.43
9.11
9.03
5.96
4.03
6.54
7.40
8.38
4.99
4.53
7.51
7.38
25.60
24.19
22.85
10.61
9.29
9.57
6.19
4.08
6.53
7.48
8.86
5.15
4.76
7.67
7.64
25.141
23.77
22.78
10.02
9.05
9.18
5.88
4.08
6.46
7 .3 3 1
O T
5 00!
4.611
7.361
7.23
24.72
24.31
22.76
10.28
9.19
8.98
6.03
3.95
6.40
7.15
8.311
4.91!
4.43!
7.361
7.27!
23.93
23.06
25.23!
23.88
22.23
9.00
9.08
9.39
6.12
3.92
6.16
7.54
22.97
9.73
8.92
9.22
5.83
3.88
6.24
7.34
8.39
5.03
4.42
7.36
7.18
8.50
4.93
4.41
7.20
7.30!
24.35
24.19
22.64
9.96
8.90
8.82
5.63
3.82
6.36
7.31
8.29
4.77
4.24
7.09|
7.14.
24.92
24.25
22.72
10.29
9.02
9.10
5 76:
3.90
6.34
7.41
8.45
4.96
4.29
7.13
7.29
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
Observations from the deeper portions o f the middle tubes and Top bench - east
tube show a zone o f decreased water content immediately overlying the native material
(Tables 5 - 8). Because the water content in these zones is moderately variable, these data
probably represent a zone o f coarser material containing void spaces which may drain
quickly and fluctuate in water content from slightly below the actual field capacity o f this
coarser material to field capacity.
Apparent rubble zones identified where volumetric water contents are consistently
much less than 5.89 percent are visible at the 22.5 - 27.5, 82.5 - 87.5, 102.5 - 107.5, 122.5
- 127.5, 152.5 - 177.5 foot, and bottom depth increments o f the Top bench - east tube
(Table 9). These zones occur at increments which are likely to represent the lift thickness
o f the repository construction. Rubble zones are also visible in the volumetric water
content data collected from the Top bench - west tube.
Drainage from the Lower Bench
A comparison o f monthly precipitation to cap and repository drainage totals for
the Lower bench is given in Figure 7.
On the Lower bench, the West tube had 0.77 inches o f repository drainage and no
cap drainage in June, a month during which 3.29 inches o f precipitation fell on Mill Gulch,
while the center and east tubes had no measurable drainage. Large water storage
increases were observed in the capping materials at all three tubes. W ater loss from the
Lower bench - west tube emanated largely from that portion o f the repository 22.50 feet
and deeper. Small water changes in the Center and East tubes occurred throughout the
entire profile.
41
T ab le 5.
V o lu m e tr ic w ater co n ten ts for the M id d le ben ch - w est tube.
C a p p in g M a te r ia ls
D ale
15-21-96 16-24-96 17-22-96 18-15-96 !9-24-96 110-29-96 12-10-96 1-21-97 13-5-97 14-9-97
D epth
I
In c re m e n t (ft) Lithology
'V o lu m e tric W a te r C o n te n t (% )
_____
0.25 - 0.75
This zone is under construction, j
|
0.75 - 1.25
topsoil
1.25 - 1.75
topsoil
9.58
9.57
3.97
2.32
7.33
5.90
11.78'
18.30
18.74
14.08
1.75 - 2.25
oxidized waste rock
16.19
17.32
13.31
12.50
14.48
14.11
13.94 j
22.36
22.69
24.34
2.25 - 2.75
oxidized waste rock
16.78
17.98
15.53
14.45
15.96
15.37
14.83
17.81
19.05
25.81
2.75 - 3.25
oxidized waste rock
16.78
17.74
15.74
15.36
16.37
15.59
15.54
15.71
14.95
22.65
325 - 3.75
oxidized waste rock
16.48
17.56
15.39
14.84
16.04
15.56
15.24
15.04
16.96
20.87
oxidized waste rock
3.75 - 4.25
16.62
17.62
16.06
15.59
15.89
15.65
15.38
14.03
12.90
14.95
4.25 - 4.75
oxidized waste rock
15.59
17.24
14.84
14.78
15.81
15.19
14.82
14.04
13.25
13.55
Emmerson shale
4.75 - 5.25
22.64
26.03
19.50
18.38
19.63
18.39!
18.02
16.42
14.89
16.10
5.25 - 5.75
Emmerson shale
39.61
39.56
38.85
39.80
39.00
39.04!
40.16
37.06
37.61
37.36
5.75 - 6.5
jEmmerson shale
35.14
36.92
37.63
36.74
37.68
38.42!
37.99
.37.20
35.72
37.79
W a ste R o ck
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 - 10.5
10.5 - 17.5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
6 7 J - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5 - 112.5
1 1 2 .5 -1 1 7 .5
1 1 7 .5 -1 2 2 .5
122.5 - 127.5
127.5 - 132.5
132.5 - 137.5
137.5 - 142.5
142.5 - 147.5
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
native material
native material
13.14
11.20
10.69
10.81
10.43
10.73
9.55
8.59
9.43
10.54
10.52
9.32
8.60
9.52
9.50
10.36
11.39
6.28
7.52
3.62
10.45
3.66
3.06
3.21
3.66
4.09
4.02
2.98
2.69
10.58
12.12
13.62!
11.05
10.51
10.39
10.26
10.60
9.38
8.29
9.36
10.47
10.37
9.20
8.35
9.43
9.49
10.39
10.95
6.51
7.74
3.47
10.14
3.66
2.94
3.04
3.59
3.86
3.60
3.18
2.65
10.121
12.14
13.86:
10.96
10.77
10.62
10.19
10.74|
9.35
8.55
9.37
10.38
10.16;
9.171
8.24
9.50'
9.68!
10.19!
11.17
6.58
7.70'
3.331
10.04
3 991
2.85
3.07
3.451
3.73
2.55
3.16
2.55
9.97
12.12
13.90
11.21
10.90
10.78
10.44
10.95
9.65
8.80
9.53
10.63
10.23
9.54
8.36
9.48
9.50
9.96
11.21
6.85
7.62
3.51
10.33
3.71
3.05
.3.13
3.51
3.82
2.58
3.13
2.58
10.18
12.27
13.84
10.941
10.34
10.73
10.35
10.47|
9.34=
8.80
9.45
10.381
10.07
9.31
8.31
9.64
9.67
lO.IOl
10.95
6.64
7.62
3.44
10.33
3.79
3.07
3.19
3.59
3.64
2.53
2.99
2.49
9.96
12.17
13 98
11.38
10.65
10.63 j
10.62
10.981
9.92
8.88
9.71
10.45
10.48
9.55
8.41
9.91
9 75
10.77 =
11121
7.09
7.72!
3.55
10.5.3!
3.93!
1.86!
2.05
.3.59
.3.88
2.63
3.09
2.69
10.35
12.34
14.06
11.02,
10.45
10.65 i
10.20
10.32
9.60 I
8.52
9.81
10.40
10.30
9.28
8.29
9.80
9.64
10.24
11.16
6.89
7.80
3.45
10.25
3.80
3.20
3.16
3.58
3.78
2.47
2.96
2.40
9.52
11.96
13.35
10.77;
10.14
10.31
9.78
10.17
9.31
8.40
9.01
10.07
9.76
8.80
7.96
9.31
9.22
9.74
10.56
6.56
7.58
3.36
9.85
3.53
2.88
2.99
3.39
3.64
2.33
2.81
2.45
9.10
10.89
13 27
10.96
10.15
10.18
10.07
10.20
9.16
8.75
9.05
10.03
9.78
8.73
7.81
9.15
8.76
10.09
11.10
6.73
7.69
3.24
10.14
4.09
3.34
2.99
3.42
4.07
2.32
3.32
2.23
8.78
11.26
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
13.51
10.65
10.33
10.40
9.92
10.26
9.39
8 46'
9.16
10.09
9.89)
9.03
7.95
9.31
9.33
9.8 i t
10.62
6.55
7.45
3.50
9.62
3.81
2.96
3.05
3.36
3.62
2.45
2.84
2.37
11.56
18.86
42
T a b le 6 .
V o lu m e tr ic w a te r c o n te n ts fo r th e M id d le b e n c h - c e n te r tu b e.
C o u n t R a t i o s o f C a p p in g M a t e r ia ls
D a te
5-21-96
6-24-96
7 -2 2 -9 6
8-15-96
9-24-96
10-29-96 !12-10-96 1-21-97
4 -9 .9 7
D e p th
L
I n c r e m e n t (ft)
!L ith o lo g y
0.2 5 - 0.75
! T h i s z o n e i s u n d e r c o n s t r u c t io n .
0 .7 5 - 1 .2 5
! T h i s z o n e is u n d e r c o n s t r u c t io n .
1.25 - 1.75
1.75 - 2.25
I to p s o il
(V o lu m e tric W a t e r C o n te n t ( % )
I
2 .2 5 - 2.75
o x i d i z e d w a s te r o c k
17.56
22 .0 0
17.46
2.7 5 - 3 .2 5
o x i d i z e d w a s te r o c k
19.05
o x i d i z e d w a s te r o c k
______ ______
15.21
23.39
19.04
23.09
9.86,'
23.02!
16.121
17.76
32 5 - 3 .7 5
o x i d i z e d w a s te r o c k
21.99
23.97
19.881
3 .7 5 - 4.25
4.2 5 - 4 .7 5
o x i d i z e d w a s te r o c k
33.03
35.73
37.74
31.85
3 0 .5 5 1
36.61
4.7 5 - 5.25
5 .2 5 - 5.75
5.7 5 - 6.5
E m m e rs o n sh a le
E m m c r s o n s h a le
E m m c rs o n sh a le
E m m e rs o n sh a le
34.02:
33.65:
36.85
38.40
35.25
34.18
8.44
19.82
15.42
17.34
19.08
29.06
39.13
36.98
39.41
35.30
33.56!
36.00
34.36
13.15
24.45
17.04
23.29
15.82
15.56
16.12
16.61
18.64
17.04
16.47
19.09
22.32
29.84
18.31
29.97
38.98
36.37
34.08
19.12
27.99
36.58
38.86
36.79
34.38
17.78
19.14
36.29
11.47
12.17
22.74
20.60
25.49
27.35
35.87
38.91
36.85
39.27
36.09
34.73
35.90
33.98
22.81
26.56
20 .4 9
25.61
35.26
37.84
35 .5 4
33 .8 0
V o lu m e tr ic W a te r C o n te n t o f W a ste R o c k
$6.5 - 7.5
!waste rock
13.29
14.38
15.30
15.53
16.28
16.15
15.58
15.84
15.65
17.5 - 8.5
jwaste rock
10.42
10.75
10.87
10.83
10.68
10.90
10.82
10.57
10.30
|8 .5 - 9.5
!waste rock
9.84
9.97
9.91
9.84
9.78
9.93
9.69
9.60
9.741
waste rock
9 .5 4
9.70
9.44
9.52
9.74
9.61
9.46
9 .4 0
9.60
9.54
9.44
9.52
9.51
9.28
9.24
9 .2 9
9.16
10.09
9.99
10.46
10.05
10.16
10.03
9.65
9.73
10.50
10.17
10.41
10.07
11.73
10.26
10.23
9.92
9 .9 9
12.06
10.78
11.91
10.79
11.37
10.78
11.55
10.48
9.5 - 10.5
10.5 - 1 7 .5
waste rock
9 .3 2
17.5 - 2 2 .5
waste rock
waste rock
10.12
22 .5 - 2 7 .5
2 7 .5 - 32 .5
waste rock
11.96
3 2 .5 - 37 .5
waste rock
11.85
11.46
10.22
11.84
10.92
11.09
3 7 .5 - 42.5
42.5 - 47 .5
47.5 - 52 .5
waste rock
waste rock
11.12
11.84
11.28
11.76
11.21
11.90
waste rock
waste rock
10.49
4.37
10.64
52.5 - 57.5
10.98
4.25
5 7 .5 - 6 2 .5
waste rock
6.21
62.5 - 6 7 .5
waste rock
11.95
11.10
11.28
10.65
11.22
12.22
10.82
11.16
11.90
11.36
11.70
11.27
11.84
10.57
4.25
10.95
3.98
10.28
4.23
5.92
5.95
6.01
5.80
6.82
5.76
5.51
7 .8 0
7.78
7.98
7.89
7 .5 9
8.16
7.32
7 .4 2
9.14
11.64
9.13
9.07
11.79
9.48
11.95
11.49
9.07
11.77
9 .1 0
11.77
3.62
4.28
3.50
4.14
3.64
4.37
4.43
5 .9 4
4.27
11.66
10.36
4.18
10.93
11.45
10.50*
3.89
6 7 .5 - 72.5
waste rock
7.73
9 .0 4
72.5 - 7 7 .5
waste rock
11.71
7 7 .5 - 82.5
waste rock
waste rock
3.59
3.43
3.71
4.51
4.36
2.54
4.25
2.41
2.39
2.39
2.32
2.44
2.29
2.28
4.45
4.49
4.37
4 .3 9
4.62
4.12
4.49
8.86
9 .0 4
11.49
3.84
11.43
3.54
4.45
4.31
4.48
3.71
8 2 .5 - 87.5
87.5 - 92.5
waste rock
2.50
92.5 - 97.5
waste rock
' 4.72
97.5 - 102.5
waste rock
5.28
4.75
5.54
5.58
5.58
5.64
5.72
5.45
5.43
5.31
102.5 - 107.5
waste rock
3.50
3.74
3.69
3.88
3.76
3.90
3.67
3.62
107.5 - 112.5
jwaste rock
2.75
2.70
2.97
2.78
2.81
2.75
2.61
3.69
2.64
112.5 - 117.5
117 .5 - 122.5
Iwaste rock
Iwaste rock
3.53
3.62
4.06
3.53
3.42
2.79
3.49
3.46
3.61
3.41
3.57
3.41
3.57
3.34
3.43
3.29
3.90
3.83
3.77
5.48
3.95
5.18
3.84
5.69
3.74
5.41
3.31
3.55
4.65
4.66
4.67
4.77
122.5 - 12 7 .5
127 .5 - 1 3 2 .5
j waste rock
waste rock
3.44
3.33
3.29
3.82
4 .5 2
132.5 - 137.5
waste rock
3.10
3.04
3.08
3.18
3.02
2.99
2.94
2.84
2.82
137.5 - 142.5
waste rock
3.14
3.11
3.24
3.15
3.12
3.06
2.95
1.75
2.86
142 .5 - 147.5
147.5 - 152.5
native material
11.87
12.02
11.58
11.58
11.38
11.13
10.91
10.01
11.75
10.18
11.76
native material
9.90
9.95
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
43
T a b le 7.
V o lu m e tr ic w a te r c o n te n ts fo r th e M id d le b e n c h - e a s t tu b e.
C a p p in g M a te r ia ls
W a ste R o ck
waste rock
11.16
11.28
11.32
11.40
11.47
11.29
11.38
11.14
8.5 - 9.5
waste rock
10.46
10.51
10.80
10.68
10.51
10.59
10.55
10.33
10.13
10.34
9.41
9.5 - 1 0 .5
waste rock
9.93
10.16
10.17
10.19
10.07
10.01
1 0 .5 - 17.5
waste rock
10.06
10.16
10.39
10.35
10.21
10.13
17 .5 - 2 2 .5
waste rock
10.43
10.42
10.64
10.29
10.31
10.68
10.87
10.84
2 2 .5 - 27.5
i
I
7 .5 - 8.5
10.49
10.23
10.57
10.39
9.94
11.25
10.44
9.85
9 .7 4
10.52
10.20
10.14
10.58
10.21
10.26
2 7 .5 - 3 2 .5
waste rock
12.04
12.15
11.92
12.06
11.90
11.66
11.76
11.62
11.90
3 2 .5 - 3 7 .5
waste rock
11.08
11.45
11.63
11.16
11.25
11.25
11.15
11.66
11.09
3 7 .5 - 4 2 .5
waste rock
10.10
10.69
11.53
10.71
10.60
10.60
10.35
10.64
10.06
4 2 .5 - 47 .5
waste rock
9 .2 8
9 .1 9
9.16
9.13
8.95
8.92
8.86
8.38
9.48
4 7 .5 - 52 .5
waste rock
7 .9 6
8 .0 0
7.99
8.12
7.88
7 .7 7
7.88
7.42
8.06
5 2 .5 - 57 .5
waste rock
5.51
5 .7 2
5.55
5.37
5.52
5.45
5.47
5.09
5.61
5 7 .5 - 62 .5
waste rock
6 .6 2
6.95
6.93
6.88
6.85
6.73
6 .6 4
6.78
6 .4 2
6 2 .5 - 67 .5
waste rock
5.73
7.01
6 .9 4
5.48
7 .2 2
5.49
7 .3 6
4.8 5
7.08
5.24
7.10
waste rock
6.53
5 .2 4
7 .0 7
6 7 .5 - 72 .5
5.33
5.25
5 .3 2
5.35
7 2 .5 - 77 .5
waste rock
3 .5 0
3.51
3.70
3 .7 0
3 .5 0
3.45
3.37
waste rock
3.17
3.28
3.31
3.31
3 .5 6
3.41
3.57
7 7 .5 - 82.5
3.19
3.21
2.96
2 .9 6
4 .0 4
8 2 .5 - 87.5
waste rock
4.1 3
4.0 2
4 .2 8
4 .1 6
4.23
4 .1 5
4 .1 3
4 .0 0
8 7 .5 - 9 2 .5
waste rock
3 .5 4
3.51
3 .5 6
3 .5 0
3.49
3.51
3.39
3.40
3.59
9 2 .5 - 9 7 .5
waste rock
2.35
2.5 0
2.65
2 .7 2
2.55
2 .5 0
2 .6 6
2 .4 6
2.57
2 .6 6
9 7 .5 - 102.5
waste rock
2.4 8
2.4 0
2.45
2.55
2.51
2.48
2.42
2 .3 6
10 2 .5 - 1 0 7 .5
waste rock
10.69
10.52
10.94
10.82
10.66
10.78
10.36
10.22
10 7 .5 - 11 2 .5
waste rock
4.3 5
4.3 2
4 .5 3
4 .6 0
4.44
10.65
4 .4 4
4 .5 7
4 .3 0
4 .4 4
11 2 .5 - 1 1 7 .5
11 7 .5 - 12 2 .5
waste rock
2.8 6
3.05
3 .0 4
3.04
3.00
2.87
2.73
2 .8 0
waste rock
7 .7 6
7.51
7 .5 2
3.84
3.55
2.78
3.49
3.51
3.30
3.31
12 2 .5 - 127.5
waste rock
4.2 8
4 .0 8
4 .1 1
4 .0 2
3.85
3.66
3.53
3.54
3 .5 2
12 7 .5 - 1 3 2 .5
waste rock
4 .4 8
4 .4 9
4.23
4.03
3.62
3.46
3.68
3.38
3 .5 0
13 2 .5 - 13 7 .5
waste rock
3.63
3.64
3.83
3 .9 0
3.70
3.46
3.25
3.00
3 .0 8
13 7 .5 - 142.5
waste rock
3.2 9
3.61
3.80
3.75
3 .6 2
3 .5 0
3.18
2 .7 6
2.02
1.80
2.03
1.92
1.85
2 .2 4
2.28
2.12
2 .1 2
1 4 2 .5 - 1 4 7 .5
waste rock
1.87
1.93
3.73
2.04
14 7 .5 - 15 2 .5
waste rock
1.81
2.13
2.35
2.21
1.93
2.40
5 .5 4
5.55
5.63
5.79
5.48
5.48
5.03
8 .9 0 '
8.72
8.66
8.48
8.40
1 5 2 .5 - 1 5 7 .5
jnative material
4 .9 8
15 7 .5 - 16 2 .5
(native material
10.05
13.91
Shaded cells indicate volum etric w ater content is above the critical value at which downws
drainage will occur in response to gravity.
44
T a b le 8.
V o lu m e tr ic w a te r c o n te n ts fo r th e T o p b e n c h - ea st tub e.
C a p p in g M a t e r ia ls
D a te
5-2 1 -9 6
f6 -24-96
17-22-96
8-15-96
9-24-96
D e p th
In c r e m e n t (ft)
L ith o lo g y
0.2 5 - 0.75
T h i s z o n e is u n d e r c o n s tr u c tio n .
0.7 5 - 1.25
1.25 - 1 .7 5
T h i s z o n e is u n d e r c o n s tr u c tio n .
to p s o il
18.99
15.81
15.19
14.80
15.841
1.75 - 2.25
o x i d i z e d w a s te r o c k
15.89
15.94
15.93
15.91
16.04
2.25 - 2.75
2.7 5 - 3.25
15.93
15.691
o x i d i z e d w a s te r o c k
19.38
19.16
19.97
16.30
16.67
16.89
o x i d i z e d w a s te ro c k
325 - 3.75
o x i d i z e d w a s te ro c k
20.93
16.39
E m m e r s o n s h a le
37.46
4 4 .2 0
39.35
30.39
39.89
36.75
16.17
15.35
15.06
15.86
14.79
14.32
13.33
12.05
10.84
7.03
6.66
12.43
10.99
10.28
6.06
5.57
E m m e r s o n s h a le
14-9-97
V o lu m e tric W a te r C o n te n t (% )
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
E m m e r s o n s h a le
10-29-96 i12-10-96 1-21-97
29.52
40.79
37.77
15.51
16.40
16.37
29.10
42.11
38.09
15.96
14.71
15.24
15.44
16.62
16.46
14.00
7.54
17.04
15.99
16.21
14.81
18.94
24.21
22.87
16.08
16.04
16.00
16.13
16.42
39.73
37.03:
25.12
39.79
37.33
26.94
39.98
37.88
24.83
38.14
36.13
16.85
25.83
39.26
36.85
16.40
14.29
14.24
17.50
14.35
14.20
17.15
14.31
14.30
12.46
16.96
13.68
13.96
12.17
13.88
13.88
12.31
10.45
10.00
7.18
10.30
16.61
27.94
W a ste R ock
5.2 5 - 5.75
5.7 5 - 6.5
6.5 - 7.5
*7.5 - 8.5
IE s T il
9.5 - 1 0 .5
10.5 - 17.5
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
17.5 - 22.5
22.5 - 27.5
waste rock
waste rock
waste rock
27.5 - 32.5
waste rock
8.82
8.58
32.5
37.5
42.5
47.5
37.5
42.5
47.5
52.5
waste rock
waste rock
waste rock
waste rock
5.71
11.14
5.95
10.38
9.36
7 .3 9
9.25
7.58
52.5 - 57.5
waste rock
10.66
6.91
-
6 .8 6
7.11
8.65
10.58
6.25
10.68
6.04
10.49
6.08
11.82
6.22
11.92
8.99
7.56
9.91
7.66
9.25
8.95
7.67
10.15
7.32
10.35
10.90
7.62
7.86
10.21
7.49
9.13
7.39
10.30
6.99
10.32
7.32
6.67
6.69
6 .60
8.26
6 .29
9 .99
6.88
8.41
6.73
8.33
6.55
7.03
8.76
7.07
8.44
6.30
10.61
4.07
6.07
6.73
6.73
10.63
4.10
6.34
waste rock
waste rock
waste rock
10.16
4.03
87.5 - 92.5
92.5 - 97.5
waste rock
waste rock
6.28
-6.66
5.97
6.59
5.93
5.37
97.5 - 102.5
waste rock
6.35
102.5 - 1 0 7 .5
107.5 - 112.5
waste rock
waste rock
112.5 - 117.5
117.5 - 122.5
waste rock
5.63
7.33
6.8 2
waste rock
waste rock
waste rock
waste rock
5.93
8.91
8.71
167.5 -1 7 2 .5
172.5 - 177.5
8.53
6.04
10.08
7.08
7.12
8.70
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
7.26
7.26
5.88
12.31
10.72
8.54
8.43
6 .3 0
10.09
4 .1 0
152.5 - 157.5
157.5 -1 6 2 .5
162.5 - 167.5
6.73
7.22
5.48
10.79
10.05
6.80
7.28
8.97
waste rock
waste rock
waste rock
10.28
12.66
7 .0 0
5.66
waste rock
waste rock
137.5 - 142.5
142.5 -1 4 7 .5
147.5 -1 5 2 .5
14.79
12.78
10.94
5.70
62.5 - 67.5
67.5 - 72.5
127.5 -1 3 2 .5
132.5 - 137.5
10.65
10.18
17.54
15.14
5.78
57.5 - 62.5
122.5 - 127.5
17.00
14.62
14.26
12.48
8.83
9.31
7.68
6.78
3.01
1.75
1.68
1.55
2.80
7.28
4.12
8.31
6 .4 0 '
6.22
10.78
4.14
10.37
3.88
6.15
6.19
6.66
17.67
5.42
10.67
9.90
7.11
7.37
5.54
8.59
5.96
6.23
9.70
6.83
6.77
11.38
9.16
8.29
7.59
9.98
11.79
9.53
7.76
10.18
7.09
7.03
6.88
7.09
8.06
6.24
8.36
6.37
10.06
4.12
9.78
3.82
5.90
6.89
6.13
6.94
6.08
6.31
6.16
6.17
6.12
5.85
5.41
7.21
5.47
5.51
7.28
6.79
5.48
7 .4 4
5.20
7.28
7.37
6.49
6.39
6.46
8.69
5.74
8.50
5.49
8.57
5.86
7.1 6
6.61
6.59
5.66
7.69
6.84
8.62
5.81
8.43
5 .80
5.86
8.51
8.65
9.041
7.24
8.53
8.78
9.02
8.99
9.02
9.63
6.74
7.33
6.59
7.72
6.88
2.96
1.71
1.51
1.54
2.76
2.98
1.70
1.56
1.46
2.74
3.32
1.82
1.66
1.61
3.14
8.98
7.35
E iE
6.39
8.54
8.69*
5.70
8.61
8.44
5.60
9.36
2.79
9.12
7.47
9.26
7.52
6.681
6.67
3.06
1.78
1.74
1.58
2.89
8.87
8.65
9.27
3.03
7.38
6.95
3.06
1.83
1.48
1.50
2.91
1.72
1.71
1.63
2.90
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
6.39
8.63
8.45
8.93
7.26
5.96
6.71
6 .0 0
5.28
8.51
8.60
8.98
7 .2 4
6.37
2.76
1.71
1.40
1.44
6.59
3.12
2.69
2.83
1.61
1.59
1.44
45
T a b le 8 c o n tin u e d .
Date
Depth
Increm ent (ft)
177.5 - 182.5
182.5 - 187.5
187.5 - 192.5
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5 - 301.5
301.5 - 303
303 - 305
305 - 307
307 - 309
309 - 311
3 1 1 -3 1 3
313 - 315
Lithology
w a s te r o c k
!w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te r o c k
w a s te ro c k
w a s te r o c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te r o c k
w a s te ro c k
w a s te r o c k
w a s te r o c k
w a s te ro c k
w a s te r o c k
w a s te r o c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
n a t i v e m a t e r ia l
n a t i v e m a t e r ia l
n a t i v e m a t e r ia l
n a t i v e m a t e r ia l
n a t i v e m a t e r ia l
( n a t i v e m a t e r ia l
V o lu m e tr ic w a ter c o n te n ts fo r the T o p b en ch - e a st tu b e.
15-21-96 !6-24-96
I
6.56
6.86 ^
8.16
10.02 i
4.44i
4.57
4.32
2.78
3.20
3.43
2.48
2.83
2.74
2.78
3.10
3.36
3.37
3.77
4.39
3.91
3.18
3.01
3.56
3.65
.3.81
4.69
8.82
9.43
10.30
12.41
10.30
5.93
6.51
6.49
8.08
10.02
4.17
4.26
4.15
2.61
3.27
3.22
2.53
2.70
2.56
2.69
3.00
3.38
3.39
3.76
4.25
3.86
3.05
2.88
3.53
3.45
3.8.3
4.50
8.00
8.95
10.22
11.51
10.10
5.81
7-22-96 18-15-96 19-24-96 !10-29-96 12-10-96 11-21-97 I4-9-97
I - - - - - - - - - - - - - I------------Volum etric W ater C ontent (% )
6.41
6.81
6.53
6.71
6.75
6.47
6.61
6.63
7.141
6.84
6.60
6.65 I
6.61
6.66
8.09
8.27
7.78
8.18
8.14
8.13
7.91
9.85
10.41
10.12
10.12
9.95 I
9.79
9.82
4.00
4.30
4.12
4.45
4.18
4.10
4.10
4.42
4.59
4.47
4.53
4.42
4.29
4.35
4.22
4.39
4.301
4.20
4.27
4.12
4.14
2.71
2.84
2.65
2.72
2.75
2.61
2.72
3.30
3.60
3.30
2.21
3.30
3.16
3.32
3.26
3.35
6.12
3.46
3.36
3.19
3.16
2.48
2.65
2.51
2.59
2.56
3.51
2.51
2.76
2.81
2.84
2.64
2.85
2.67
2.88
2.52
2.70
2.55
2.53
2.61
2.48
2.61
2.79
2.75
2.69
2.72
2.82
2.65
2.82
2.94
3.12
2.93
3.18
3.00
2.83
2.85
3.31
3.47
3.30
3.51
3.41
3.28
3.50
3.46
3.54
3.32
3.45
3.40
3.28
3.26
3.74
3.87
3.69
3.66
3.61
3.62
3.71
4.22
4.48
4.18
4.33
4.16
4.09
4.23
3.89
4.05
3.82
3.92
3.86
3.83
3.79
3.08
3.12
3.04
3.14
3.25
3.07
3.17
2.90
2.98
2.93
3.00
2.97
2.78
2.92
3.40
3.43
3.37
3.27
3.44
3.24
3.37
3.55
3.70
3.47
3.60
3.61
3.41
3.49
3.82
4.02
3.78;
3.83
3.88
3.65
3.64
4.41
4.95
4.55 i
4.89
4.60
4.48
4.70
8.39
8.60
8.03!
8.52
8.53
8.17
8.49
9.06
9.50
9.32|
9.35
9.29
8.89
9.07
10.31
10.66
10.06
10.39
10.25
9.85
10.18
11.36
11.82
11.27
11.99
10.901
10.71
11.65
I 1.40
11.65
11.10
9.35
9.29!
8.89
9.29
5.80
10.66:
10.06
10.39
10.251
9.85
10.29
Shaded cells indicate volumetric water content is above the critical value at which downward
' drainage will occur in response to gravity.
46
T able 9.
V olu m etric water contents for the Top bench - w est tube.
C a p p in g M a teria ls_____________
lU a lt
15-21-96 ^6-24-96 [7-22-96 ‘£ 1 5 -9 6 i9-24-96 ^0-29-96112-1(1-96 l l-2 1 -9 7 ~ 4 -9 -9 7
D epth
In crem ent (ft) ILithology
j
j_ _ _ _ _ _ _ _ _ _ j_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ !V olum etric W ater C ontent (% )
I
0 .2 5 - 0 .7 5 ______ !This zimc is under conslmclmn
§0.75 - 1.25
1 .2 5 -1 .7 5
1 .7 5 -2 .2 5
12.25 - 2.75
§2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
to p s o il
(o x id iz e d w a s te r o c k
j o x id iz e d w a s te ro c k
(o x id iz e d w a s te ro c k
o x id iz e d w a s te ro c k
o x id iz e d w a s te ro c k
I E n m i c r s o n s h a le
j E m m e r s o n s h a le
i E n m ie rs o n sh a le
15.97
18.89)
20.04 !
21.73
20.54:
19.99
27.59|
39.61
28.83
16.91
F iT l
20. If
21.74
21.26
20.50
27.25
39.10
30.87
8.14
17.52
19.27
21.08
20.251
19.9 I
25.01
37.96|
31.44 I
7.1"
17.49
19.72
21.23
21.14
20.39
26.02
39.69
33.34
17.7
18.94
19.841
21.22
20.89:
20.04 I
26.43
38.55
27.54|
12.071
18.32
19.831
21.16
20.31
19.881
24.17
38.76
32.27
14.10
14.78
14.26
13.44
10.74
9.46
8.05
8.32
7.01
5.32
7.60
10.93
7.84
7.88
8.86
9.26
6.99
6.85
8.70
7.47
7.89
5.81
5.77
6.30
6.15
6.56
6.83
5.55
8.14
6.23
8.07
10.35
8.85
8.13
7.83
4.64
2.02
2.11
1.28
1.63
3.40
3.68
6.49
7.65
13.50
13.96
13.76
13.09
9.86
8.94
7.55
7.77
6.89
5.15
7.12
10.49
7.58
7.54
8.30
9.03
6.64
6.81
8.50
7.13
7.46
5.25
5.48
5.91
5.88
6.11
6.44
5.16
7.59
5.75
7.88
10.02
8.67
7.90
7.73
4.75
1.91
2.101
1.17!
1.55
3.29
3.45
6.24
7.52
13.93
14.44
14.06
13.35
10.01
9.14
7.79
7.87
6.91
5.20
7.11
10.88
7.52
7.58
8.36
8.90
6.61
6.90
8.31
7.33
7.46
5.43
5.73
6.08
5.90
6.09
6.42
5.37
7.65
5.75
8.15
10.23
8.66
7.79
7.81
4.48
1.69
2.23
1.12
1.59
3.38
3.64
6.40
7.51
11.76
19.06
19.K
20.12
1966
18.68
22.94
36.74
31.501
j
11.25
19.3C
19.32
20.37
19.50
18.94
27.83
35.61
30.72
7.42
18.59
19.52
22.53
20.58
18.21
21.01
34.96
32.43
13.04
13.74
13.42
12.53
9.89
8.73
7.30
7.54
6.37
4.85
6.97
10.00
7.23
7.20
8.16
8.46
6.44
6.46
7.91
6.96
6.99
5.09
5.21
5.86
5.57
5.80
6.11
4.88
7.01
3.23
7.66
9.51
8.17
7.31
7.24
4.32
1.77
1.96
0.99
1.50
2.97
3.20
6.20
6.97
13.33
13.51
13.34
12.60
10.17
9.06
7.42
7.85
6.71
4.82
7.07
10.02
7.33
7.26
8.04
8.68
6.23
6.56
8.10
6.99
7.28
5.26
5.52
5.88
5.63
5.84
6.02
5.12
7.22
5.79
7.96
9.52
8.38
7.73
7.52
4.41
1.92
1.97
1.06
1.47
3.14
3.37
6.27
7.29
W a ste R ock
Iw a s t e ro c k
(w a s te r o c k
jw a s te ro c k
(w a s te r o c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te r o c k
w a s te r o c k
w a s te ro c k
w a s te r o c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
I
I
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9 5
9.5 - 10.5
1 0 .5 -1 7 .5
1 7 5 - 22.5
22.5 - 27.5
2 7 5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
§47.5 - 52.5
§52.5 - 5 7 5
57.5 - 62.5
§62.5 - 6 7 5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
8 2 5 - 87.5
87.5 - 92.5
92.5 - 97.5
9 7 5 - 102.5
102.5- 107.5
1 0 7 .5 -1 1 2 .5
1 1 2 5 -1 1 7 .5
117 .5 -1 2 2 .5
122.5 - 1275
127.5 - 132.5
132.5 - 1375
137.5 - 1425
142 5 - 147.5
147.5- 1525
152.5- 157.5
157.5 - 162.5
162.5 - 167.5
167.5- 172.5
1 7 2 .5 -1 7 7 5
177 .5 -1 8 2 .5
182.5- 187.5
187.5- 192.5
192.5 - 197.5
197 5 - 202.5
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te r o c k
w a s te r o c k
w a s te ro c k
w a s te r o c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te r o c k
w a s te r o c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
w a s te ro c k
13.33
14.44
13.56
12.86
9.95
9.06
7.54
8.01
6.61
5.23
7.35
10.72
7.29
7.70
8.57
8.95
7.13
6.93
8.40
7.51
7.56
5.30
5.65
6.10
6.07
6.00
6.67
5.17
7.78
5.93
7.99
10.09
8.44"
8.05
7.61
4.58
1.94
2.14
1.34
1.69
3.49
3.64
6.63
7.53
13.79
14.56
14.26
13.34
10.45
9.01
7.57
7.90
6.77
5.08
7.20
10.65
7.40
7.78
8.72
8.90
6.90
6.80
8.66
7.38
7.51
5.21
5.67
6.19
5.77
6.27
6.54
5.27
7.57
5.75
7.94
9.95
9.81
7.79
7.77
4.54
1.88
2.14
1.29
1.55
3.14
3.48
6.31
7.37
14.56
14.98
14.29
13.49
10.81
9.30
7.87
8.28
6.95
5.04
' 7.34
10.96
7.69
7.91
8.87
8.94
6.94
6.83
8.85
7.36
7.88
5.55
5.79
6.39
5.98
6.36
6.78
5.46
7.97
5.99
8.29
10.25
9.01
8.21
7.90
4.64
1.88
2.24
1.25
1.58
3.40
3.67
6.54
7.89
13.23
13.90
13.68
12.73
10.08
9.03
7.39
7.75
6.63
4.84
7.01
10.27
7.36
7.57
8.08
8.72
6.51
6.46
8.10
7.02
7.37
5.32
5.54
5.93
5.80
6.11
6.27
5.28
7.43
5.69
7.77
9.84
8.39
10.11
7.54
4.41
1.79
2.08
1.17
1.62
3.31
3.46
6.37
7.29
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
47
*
3.00 -■
2.50 -=
2.00
--
S o 1.50 -1.00
-
0.50 --
£
r*
4)
o O
2.00
- -
1.50 -■
3.50 T
ICap Drainage
3.00 ■-
1— j Repository
Drainage
2.50 2.00
—* — Precipitation
-
1.50 -1.00
--
0.50 -June
Figure 7.
July
Aug
Sept
Oct
March
April
A comparison o f monthly precipitation to cap and repository
drainage for the lower tubes.
48
During the following month ending in July, 1.04 inches o f rain fell and the Lower
bench - west tube exhibited 1.08 inches o f cap drainage and no repository drainage. The
Center tube had 0.13 inches o f repositoiy drainage and the East tube had 0.56 inch o f cap
drainage. In general, layers o f the capping system overlying the clayey layer lost water
while the clayey layer gained water for all three tubes. Small changes in water storage
were observed in the repository portion o f the Center tube, and increases were observed
throughout the entire repository profile o f the East tube. W ater losses in the repository
portion o f the East tube were few and relatively minor.
During the month ending in August, 0.32 inch o f precipitation was recorded and
the Lower bench - west tube had a 0.41 inch o f cap drainage and 0.71 inches o f repository
drainage. The Center tube had 0.26 inches o f cap drainage and no repository drainage,
while the East tube had no drainage. W ater less occurred throughout the cap profile in
the West and Center tubes and in the upper portion o f the East tube. Changes in water
storage in the W est tube occurred throughout the entire profile. August water storage
was very similar to July water storage for every repository depth increment in the Center
tube, and small changes in water storage were reported throughout the repository profile
in the East tube.
September data indicated 3.13 inches o f precipitation, and 1.57 inches o f
repository drainage from the west tube. However, the center tube produced 2.17 inches
o f drainage, 0 .11 inches o f which emanated from the cap, and the east tube produced 0.35
inches o f cap drainage and 1.40 inches o f repository drainage. AU depths o f the clayey
layer o f the capping material lost water for aU three tubes, and overlying layers generally
49
gained water during this time period. Changes in water storage in the repository profile o f
the Lower bench - west tube were minor and difiuse. The center and east tubes
experienced moderate changes in water content throughout the entire repository profile.
The only drainage that occurred between the September and October readings was
0.16 inches from the center tube, 0 .11 inches o f which emanated from the cap. Neither
the west nor center tubes had drainage during this time period. There was 0.95 inch o f
precipitation during this time interval. Decreases in water storage in capping materials
were generally confined to the layers overlying the clayey layer, while most o f the water
storage gains occurred within the clayey layer. The repository portion o f the Lower bench
- west and center tubes experienced slight changes in water content over the entire profile.
There was 1.96 inches o f precipitation recorded between the October and
December monitoring periods. There was no drainage from the west tube for this interval,
while there was 1.06 inches o f repository drainage from the Center tube and 0.03 inches o f
repository drainage from the East tube. N o major water content changes occurred in the
capping materials during this time period, with the exception o f the one foot depth
increment immediately overlying the clayey layer in the Center tube, which gained 1.48
inches o f water storage. Small changes in water content occurred throughout the West
tube repository profile, and a moderate change in water storage was reported for the depth
increment from 32.5 - 37.5 feet, which lost 0.88 inches o f water storage.. Repository
drainage from the Center tube was the result o f many small decreases in w ater storage
throughout the profile, while changes in storage in the repository portion o f the east tube
.
were minor.
Januaiy monitoring indicated 1.35 inches o f precipitation. M uch o f this
precipitation may have remained frozen and therefore unavailable for infiltration. The
West tube yielded 2.91 inches o f repository drainage, the Center tube had 1.34 inches o f
cap drainage, and the East tube had 2.97 inches o f repositoiy drainage. Although the
upper portion o f the cap appeared to be frozen during the months o f December through
February, water content changes in the cap occurred. M ost o f the cap drainage in January
emanated from the lower portions o f the cap and no water losses occurred from the top
2.75 feet o f the cap. Changes in repository water storage were well distributed
throughout the profile.
Between January monitoring and March monitoring. Mill Gulch received 0.83 inch
o f precipitation. The W est tube drained 0.01 inch, all from the cap; and the center tube
drained 0.89 inches, 0.13 inch o f which was cap drainage. The East tube did not drain
Upper capping materials at the West and Center tubes tended to gain water, while the
clayey layer tended to lose water. Capping materials in the East tube gained water at
every depth increment. Changes in repository water content were minor and distributed
throughout the profile.
In April, 1.39 inches o f precipitation was recorded. The W est tube indicated 0.02
inch o f cap drainage and the Center tube had 1.17 inches o f cap drainage, while the East
tube had no drainage. Only minor changes in water storage occurred in the capping
materials o f the W est and East tubes, while the Center tube took on larger quantities o f
water in the upper portions o f the cap and lost water from the bottom o f the capping
material. W ater storage in the repository did not change dramatically at any depth.
Drainage from the Middle Bench
A comparison o f monthly precipitation to cap and repository drainage totals for
the Middle bench is given in Figure 8. Monthly incremental water storage data is
presented in Appendix D.
The only cap drainage which occurred on the Middle bench between the May
monitoring period and the June monitoring period was 0.01 inch which emanated from the
area monitored by the east tube. There was 1.78 inches o f drainage from the repository at
the west tube and 0.22 inch o f repository drainage at the center tube. Capping materials at
the west tube gained 0.78 inch o f water storage during this time period, while capping
materials at the Center tube gained 0.54 inches o f water storage. The upper layers of
capping material at the East tube gained water while water was lost from the clayey layer.
AU changes in repository water content were minor and well distributed.
July monitoring indicated cap drainage from aU tubes on the Middle bench.
Capping materials at the West tube drained 1.58 inches, and capping materials at the
Center and East tubes drained 1.17 and 1.03 inches, respectively. Additionally, there was
0.66 inch o f repository drainage from the west tube. The upper layers o f the capping
materials tended to lose more water than the lower portions. Small increases in water
storage occurred at some depths in the clayey layer. Changes in repository water storage
were minor and distributed throughout the profile.
52
6.00 T
5.00 -4.00 -3.00 2.00
--
1.00
--
0.00 4-1
4.50 T
4.00 -3.50 -3.00 -H 2.50 S 5
2.00 -
1.50 -1.00
--
0.50 --
5.00
4.50
4.00
3.50
I S 3.00
O ^ 2.50
T
---
ICap Drainage
I------1Repository
Drainage
■■A
Precipitation
S -S 2.00
1.50 -■
1.00
--
0.50 -June
July
Aug
Sept
Oct
Dec
Jan
March
April
Figure 8. A comparison o f monthly precipitation to cap and repository
drainage for the middle tubes.
All Middle tubes had cap drainage during the period between July and August
monitoring. The West tube had 0.39 inch o f cap drainage and the Center and East tubes
had 0.35 and 0.53 inch o f cap drainage, respectively. Additionally, the East tube had 2.65
inches o f repository drainage. W ater was lost from the upper layers o f the capping
sequence for all three tubes. Minor water gains occurred in some depths o f the clayey
layers. Changes in repository water storage were minor and distributed throughout the
profile for the W est and Center tubes. Drainage from the Center tube was dominated by a
2.21 inch loss in the 117.5 - 122.5 depth increment.
Drainage totals were similar for all Middle tubes for the time period between
August and September monitoring. While there was no cap drainage reported from any
tube, the repository drainage for the West, Center, and East tubes was 1.32, 1.77, and
1.74 inches, respectively. During this time period, water storage increased dramatically in
the top 1.75 feet o f cover material for all three tubes, which is illustrated in Appendix D.
Repository water storage changes were minor for the entire profile in all tubes.
October monitoring indicated 0.29 inch o f cap drainage from the Middle bench west tube, 0.59 inch o f cap drainage from the center tube, and 1.39 inches o f repository
drainage from the East tube. In general, the upper portions o f the capping system at all
three Middle tubes lost water, while the lower portions gained water. Changes in
repository water content were minor.
December monitoring indicated 1.29 inches o f repository drainage from the West
tube and 0.26 inches o f cap drainage from the East tube. M ost o f the cap drainage from
the East tube emanated from the clayey layer. AU changes in repository water content
were minor.
AU three tubes on the Middle bench had a large amount o f repository drainage in
Januaiy, and no cap drainage was reported. The West tube had 4.99 inches o f repository
drainage while the Center and East tubes had 4.18 and 4.35 inches respectively. Water
was lost from the lower portions o f the capping materials whUe the upper portions o f the
cap gained w ater storage. Repository drainage resulted from small w ater losses at many
different depths throughout the repository profile.
The Middle bench - west tube had 0.12 inches o f cap drainage in March. The
other tubes were not monitored in March due to equipment failure. This drainage
emanated primarily from the clayey layer and from the lower layers o f oxidized waste
rock. W ater storage changed sUghtly from Januaiy readings at many depths within the
repository.
The Middle bench - west tube had 0.85 inches o f repository drainage between
March and April monitoring, whfie the Center and East tubes had no drainage between
January and April monitoring. The West tube indicated water gains in the middle layers o f
the oxidized waste rock within the capping materials, while the Center tube indicated
'
general increase in water content in the upper capping materials and general decrease in
w ater content o f the lower capping materials. The East tube indicated smaU changes in
w ater content at every depth o f capping materials. Repository water content changes
were minor and distributed throughout the entire repository profile for all three tubes.
Drainage from the Repository Top
A comparison o f monthly precipitation to cap and repository drainage totals for
the repository Top is given in Figure 9.
Between May and June monitoring, the West tube had 0.30 inches o f repository
drainage while the East tube had 4.86 inches o f repository drainage and 1.93 inches o f cap
drainage. Cap drainage resulted from water loss throughout the entire cap profile at the
East tube. Small gains and losses in water storage were reported for the west tube profile.
The large amount o f drainage from the East tube is the result o f moderate water storage
changes throughout the entire waste rock profile.
In July, the W est tube measured 0.96 inches o f cap drainage, while the East tube
measured 0.30 inches o f repository drainage. The W est capping materials drained from all
three layers, while the East capping materials exhibited more water gains throughout the
profile.
August data indicated no drainage from the West tube and 0.02 inch o f cap
drainage from the East tube. N on topsoil capping materials at the W est tube increased in
w ater storage, while water losses occurred in every layer o f the capping materials at the
East tube. The bottom o f the East tube clay layers increased in water storage. The overall
repository water storage increased by 1.01 inches in the W est tube and 10.12 inches in the
East tube. The large water storage gain in the east tube was the result o f small water
56
8.00 T
CO
7.00
-
6.00
-
5.00
-
4.00
-
3.00
+
2.00
-
1.00
-
0)
C = Z IC ap Drainage
E ast Tube
8.00 T
7.00
-
6.00
-
i__ H Repository
Drainage
—* — Precipitation
5.00
4.00
-
3.00
--
2.00
-
1.00
--
March
Figure 9.
A comparison of monthly precipitation to cap and repository drainage for the
top tubes.
storage increases throughout the entire 297,75 foot profile. It is likely that this effect was
the result o f an equipment malfunction, since it is unlikely that precipitation could cause an
entire 297.75 foot profile to increase in water storage over the period o f less than one
month.
During the time period between August and September monitoring, the West tube
had 6.97 inches o f repositoiy drainage, and the East tube had 6.68 inches o f total
drainage, 0.22 inches o f which was cap drainage. W ater storage in the capping materials
generally increased in the upper portion o f the cap and decreased in the lower portion o f
the cap during this month. The apparent drainage during this month emanated from the
entire profile o f both tubes, suggesting that the effect may have been the result o f
equipment malfunction.
The West tube had 0.26 inches o f cap drainage during the October monitoring
period, while the East tube had 0.30 inches o f cap drainage and 3.30 inches o f repository
drainage. W ater storage was lost from all layers o f the capping sequence at both tubes
and increased w ater storage was observed in the bottom o f the clayey layer at the West
tube.
The Top bench - west tube had 0.43 inches o f cap drainage and 2.90 inches o f
repository drainage during the December monitoring period, while the East tube had 0.26
inches o f cap drainage. W ater storage decreased in layers o f the W est cap, while most o f
the w ater lost from the East cap emanated from the middle portion o f the oxidized waste
rock layer.
January data indicated 7.48 inches o f repository drainage at the West tube and
6.33 inches o f repositoiy drainage at the East tube. No cap drainage occurred during this
time period. The capping materials gained 0.20 inches o f water at the W est tube and 0.26
inches o f w ater at the East tube. Repository water loss occurred as small losses
throughout the entire profile for both tubes.
There was 0.46 inch o f cap drainage from the West tube during the April
monitoring period. There was no drainage from the East tube. Capping materials at the
East tube gained 1.27 inches o f water. Repositoiy water storage increased 4.47 inches in
the W est tube and 4.00 inches in the East tube during this time period.
Cap Hydrology
The upper portion o f the capping sequence is the zone in which most o f the water
content changes were expected to occur. Because vegetative cover at the site is currently
minimal, transpiration from the lower root zone depths is highly unlikely, and evaporation
from layers o f the capping system other than the topsoil layer, which constitutes the upper
12 to 18 inches is not likely. W ater loss from the underlying layers o f the cap can
therefore be interpreted as drainage. Because the capping system on the benches included
a PVC geomembrane liner, drainage from the topsoil and oxidized waste rock layers o f the
cap did not necessarily infiltrate into underlying layers. Much o f this drainage may have
been intercepted by the geomembrane and moved off - site rather than into the repository.
Lateral drainage along the geomembrane and off - site has been observed on all three
benches.
W ater storage changes for each depth increment o f the cap are given in Appendix
D. Because water storage changes in the topsoil layer did riot fluctuate more often or with
greater magnitude than water content changes in the remaining portions o f the capping
sequence, it can be concluded that evapotranspiration did not play a significant role in the
w ater budget o f the capping system. It is probable that improved vegetative cover will
enhance evapotranspiration and effectively decrease the rate o f infiltration into the
repository.
As seen in Appendix D, the greatest gain in water storage occurred in the bottom
portion o f the oxidized rock layer at the depth increment from 3.75 to 4.25 feet. This
occurred in the Lower bench - center tube in December and was a net gain o f 0.96 inches
compared to the previous month. Large losses o f greater than 0.40 inches o f water per six
inch depth increment were observed in all three layers o f the capping sequence.
60
CONCLUSIONS
A neutron probe calibration was developed for Mill Gulch waste rock in order to
perform a hydrologic analysis o f the repository. While a standard factory calibration is not
applicable to unconsolidated rock, such as Mill Gulch waste rock, the factory calibration
was used for the capping materials, which tended to be much finer in texture. Using
calibration data. Mill Gulch waste rock is estimated to drain downward in response to
gravity at approximately six percent volumetric water content. Because much o f Mill
Gulch waste rock is at or above this moisture content, it is likely that drainage is
occurring. Estimated changes in water storage also indicate that drainage is occurring.
Because approximately 58 percent o f the volume o f Mill Gulch repository is
estimated to have smaller particle size than the calibration material, it is likely that much o f
the repository has a higher field capacity volumetric water content than the 5.89 percent
field capacity value determined in the neutron probe calibration. These zones may not
drain at 5.89 percent volumetric water content, as predicted by the neutron probe
calibration. However, many o f these zones have much higher water contents than the field
capacity w ater content o f the calibration material. Some o f the more w et portions o f the
repository have volumetric water contents above 20 percent and may be at actual field
capacity. It is therefore possible that these zones are actively draining into underlying
layers.
Results obtained from neutron tubes at the repository top indicated that drainage
exceeded precipitation over the hydrologic year analyzed. The most likely explanation for
this is run - on which emanated from the large topsoil stockpile located up gradient from
the repository top. Another contributing factor may have been equipment malfunction. It
is likely that the neutron probe yielded falsely low values during some months, producing
high drainage totals for those monitoring periods. The amplification o f this effect is
proportional to the thickness o f the profile measured. This further explains why drainage
totals appeared much higher for the deeper tubes at the repository top.
Mill Gulch received less than average precipitation during the hydrologic year
analyzed. For this reason, excess drainage cannot be attributed to atypically high
precipitation.
These data suggest that the capping sequence does not adequately reduce the
percolation o f precipitation such that evaporatranspiration is the major path o f water loss
under the current vegetation conditions. For this reason, precipitation which is not
intercepted by the PVC liner and does not run off - site laterally is likely to drain
downward into the repository, where it will ultimately exit the repository as drainage.
Improvement in vegetative cover may increase evapotranspiration from the repository and
result in decreased infiltration.
Because drainage totals on the lower and middle benches were less than
precipitation totals, it is likely that lateral runoff constituted a significant pathway for
precipitation falling on the Mill Gulch repository. The capping sequence was effective in
promoting runoff from the repository, but did not effectively decrease infiltration so as to
prevent drainage from the repository.
Inherent limitations o f the neutron probe method created difficulties in collecting
and interpreting probe data in the capping materials. For instance, the measurement zone
o f the neutron probe within the top foot o f material may have included air space above the
surface at low volumetric water contents. For this reason, data collected in the top foot o f
material may have been falsely low. Additionally, use o f a single neutron probe calibration
for heterogeneous zones such as the capping sequence, which included coversoil,
Emmerson shale, and oxidized waste rock is not ideal. Separate calibrations for each o f
these materials would have yielded more accurate results, but these calibrations would
have been difficult to obtain in the field, because o f the small thickness o f each material.
Samples obtained would not have represented a broad enough range o f moisture contents.
For these reasons, further hydrologic study is needed to accurately assess the cap
hydrology. The use o f a single laboratory calibration for all Mill Gulch waste rock, which
varied greatly in particle size may have introduced error in zones where particle size was
not appoximated by calibration material.
An appropriate method for this may be to track the wetting fronts using time
domain refiectometry. Time domain reflectometry has been used to detect wetting front
movement and measure volumetric water content through a soil profile over time without
disturbance o f the site (Topp et al., 1982). This method is not useful in deep profiles such
as the repository profile, but new technology will allow deep profile measurements. Time
domain reflectometry could give more detailed insight into the hydrology o f the upper
layers o f the capping system, which are too shallow to be accurately monitored by a
neutron probe. Additionally, pan lysimeters could be used to collect and quantify drainage
from the capping system.
REFERENCES CITED
Carrijo, O.A. and R H. Cuenca. 1992. Precision o f evapotranspiration estimates using a
neutron probe. Journal o f Irrigation and Drainage Engineering. 118:943-953.
Dollhopf, D.J., M R . Strong, S R . Jennings, and J.R. Goering. 1995. Effect o f earthen
covers on tailings impoundment hydrology, pore water chemistry, and gas content.
Reclamation Research Unit, Publication Nd. 9504. Montana State University,
Bozeman. 185 p.
Drungil, C.E.C., K. Abt, and T.J. Gish. 1989. Soil moisture determination in gravelly
soils with time domain reHectometry. Pp. 177-180 in: Transactions o f the ASAE.
Gee, G.W., M L. Rockhold, and J.L. Downs. 1989. Status o f FY 88 soil-water balance
studies on the Hanford site. PNL-6750/UC-70. Batelle, Pacific Northwest Lab.
Richland, WA.
Hakonson, T E., L.J. Lane, and E.P. Springer. 1992. Biotic and abiotic processes p. 101146 In C.C. Reith and B.M. Thompson (ed) Deserts as dumps. Univ. o f New
Mexico Press, Albequerque.
Haverkamp, R., M.Vauclin, and G. Vachaud. 1984. Error analysis in estimating soil
w ater content from neutron probe measurements: I local standpoint. Soil Science.
137:78-90.
Hook, W.R., N.J. Livingston, Z.J. Sun, and P B. Hook. 1992. Remote diode shorting
improves measurement o f soil water by time domain reflectometry. Soil Science
Society o f America Journal 56:1384-1391.
Kirkschether, E.J. 1960. Ground constant measurement using a section o f balanced two
wire transmission line. Institution o f Radio Engineers Transactions on Antennas
and Propagation AP-8:307-312.
Nichols, W.D. 1987. Geohydrology o f the unsaturated zone at the burial site for low level radioactive waste near Beatty, Nye County, Nevada. U.S. Geological Survey
Water-Supply Pap. 2312. U.S Gov. Print Office, Washington, D C.
65
Or, D. and J.M. Wraith. 1996. Agricultural and Environmental Soil Physics. 213 p.
Utah State University, Logan.
Pepin, S., N.J. Livingston, and W.R. Hook. 1995. Temperature —dependent
measurement errors in time domain reflectometry determinations o f soil water.
Soil Science Society o f America Journal 59:38-43.
Roth, K., R. Schulin, H. Fluher, and W. Attinger. 1990. Calibration o f time domain
reflectometry for water content measurement using composite dielectric approach.
W ater Resources Research 26:2267-2273.
Schafer and Associates. 1995. Summary o f reclamation monitoring program for waste
rock facilities and recommendations for final reclamation. 865 Technology
Boulevard South, Bozeman, MT 59715.
Sharma, M L., R.J.W. Barron, and D.R. Williamson. 1987. Soil water dynamics o f
lateritic catchments as affected by forest clearing for pastures. Journal o f
Hydrology. 94:29-46.
Soil Conservation Service, U.S. Dept o f Agriculture. 1980. Average Annual
Precipitation, Montana. Bozeman, MT.
Stephens, D B . 1985. Significance o f natural ground-water recharge in site selection for
mill tailings disposal. Trans. Soc. Min. Eng. AIME 280:2062-2068.
Stephens, D B. 1994. A perspective on diffuse natural recharge mechanisms in areas o f
low precipitation. Soil Science Society o f America Journal 58:40-48.
Topp, G.C., J.L. Davis, and A.P. Annan. 1980. Electromagnetic determination o f soil
w ater content: Measurements in coaxial transmission lines. W ater Resources
Research 16:574-582.
Topp, G.C. and J.L. Davis. 1985. Measurement o f soil water content using time domain
reflectometry (TDR): A field evaluation. Soil Science Society o f America Journal.
49:19-24.
Zegelin, S.J., I. White, and D.R. Jenkins. 1989. Improved field probes for soil water
content and electrical conductivity measurements using time domain reflectometry.
W ater Resources Research. 25:2367-2376.
I
66
A PPENDICES
.!
I
APPENDIX A
NEUTRON PROBE CALIBRATION DATA
68
Table 10.
Neutron probe calibration data.
Volumetric Water Added:
(percent)
Volume (gal)
Depth (in)
7.9-10.2
10.2-12.6
12.6-15.0
15.0-17.3
17.3-20.5
20.5-22.0
22.0-24.4
24.4-26.8
15.0-17.3(6)
17.3-20.5(6)
Average
VWC for entire column
VWC for probe zone
Neutron Probe
6ackground counts
AVE background count
counts at 15 inch depth
AVE count
Count ratio
Volumetric Water Added:
(percent)
Time Domain Rellectometry
Volume (gal)
Depth (in)
7.9-10.2
10.2-12.6
12.6-15.0
15.0-17.3
17.3-20.5
20.5-22.0
22.0-24.4
24.4-26.8
15.0-17.3(6)
17.3-20.5(6)
Average
VWC for entire column
VWC for probe zone
Neutron Probe
Background counts
AVE background count
counts at 15 inch depth
AVE count
Count ratio
0.5%
1.0%
1.5%
0.00
0.25
0.50
0.75
3.04
3.12
3.00
3.00
2.96
2.92
3.04
3.08
2.84
2.80
2.98
0.92
0.60
3.08
3.12
3.08
3.16
3.04
2.92
3.08
3.08
2.88
2.88
3.03
1.13
0.96
3.24
3.08
3.00
3.00
2.92
2.92
2.96
3.04
2.84
2.76
2.98
0.90
0.52
3.60
3.36
3.20
3.08
3.04
2.92
2.96
3.08
2.96
2.92
3.11
1.45
1.00
23265
23485
23536
23129
23314
23424
23107
23537
23241
23473
23667
23343
23277
23538
23226
23545
23571
23086
23713
23532
23563.4 23178.2 23452.4 23407.8
2059
1541
1828
1373
2027
1689
1347
1469
1714
2075
1327
1440
2003
1469
1616
1366
1602
2058
1421
1401
1358.38
1468 1690.63 2044.4
0.05765 0.06334 0.07209 0.08734
5.0%
5.5%
2.51
2.26
2.01
1.76
1.25
1.51
1.00
apparent Iegnth (feet)
3.96
4.00
4.04
4.00
4.12
3.64
4.12
4.28
4.16
4.08
4.12
3.68
4.12
3.60
4.24
4.16
4.08
4.08
3.64
3.80
3.32
4.12
4.24
3.84
3.36
3.56
3.16
3.28
3.76
3.68
3.28
3.04
3.16
3.04
3.12
3.40
3.56
3.04
3.08
3.04
3.08
2.92
3.20
3.28
3.08
3.08
3.12
3.08
3.00
3.24
3.20
3.12
3.08
3.12
3.20
3.08
3.76
3.80
3.48
3.40
3.12
3.08
3.00
3.24
3.68
3.76
3.08
2.96
2.96
2.88
3.74
3.81
3.47
3.53
3.37
3.16
3.33
3.27
4.26
4.58
2.55
2.99
1.67
2.39
4.59
4.98
2.96
1.45
2.25
1.49
1.08
neutron count
23437
22942
23651
23505
23761
23678
23620
22874
23223
23463
23655
23528
23641
23670
23627
23468
23743
23778
23469
23593
23550
23148
23495
23715
23439
23464
23410
23406
23644
23637
22835
23653
23571
23720
23608
23535 23608.4 23198.6 23382.6
23576.6 23614.2 23608.8
4643
5282
4900
2597
3019
3759
2018
4696
5376
3754
4029
3130
2672
2383
4646
5418
3790
4116
3067
2563
2020
4819
5386
4071
3109
3852
2374
2636
5348
4464
4565
3758
2690
3043
2332
4679
5362
4316
2225.4 2638.83 3073.6 3782.6
0.09439 0.11175 0.13019 0.16072 0.18282 0.20169 0.22932
2.76
2.0%
2.5%
3.0%
3.5%
4.0%
4.5%
6.5%
7.0%
7.5%
8.0%
8.5%
9.0%
9.5%
10.0%
11.0%
11.4% 37.17%
3.26
3.51
3.76
4.02
4.27
4.52
4.77
5.02
5.52
5.74
18.66
4.00
4.24
4.28
4.24
3.88
3.76
4.00
4.08
3.76
3.76
4.00
5.53
5.08
3.96
4.24
4.28
4.24
3.84
3.68
4.12
4.16
3.76
3.76
4.00
5.55
5.03
4.04
4.24
4.36
4.24
3.84
3.76
4.16
4.28
3.76
3.76
4.04
5.75
5.03
4.00
4.32
4.40
4.28
3.84
3.76
4.16
4.32
3.76
3.76
4.06
5.83
5.08
4.00
4.24
4.32
4.28
3.80
3.72
4.16
4.32
3.76
3.76
4.04
5.71
5.03
4.00
4.32
4.32
4.28
3.92
3.84
4.16
4.40
3.84
3.84
4.09
5.99
5.38
4.00
4.28
4.32
4.24
3.84
3.68
4.12
4.28
3.80
3.80
4.04
5.71
5.13
4.00
4.16
4.20
4.20
3.80
3.68
4.12
4.28
3.72
3.80
4.00
5.51
4.93
4.00
4.32
4.40
4.28
3.88
3.80
4.24
4.40
3.88
3.88
4.11
6.07
5.43
4.00
4.28
4.28
4.16
3.96
3.80
4.12
4.24
3.76
3.80
4.04
5.73
5.13
9.08
9.40
9.24
9.32
9.40
9.40
9.40
9.40
9.64
9.64
9.39
36.96
37.52
23347
23124
23491
23005
23064
23427
23004
22726
22938
23294
23415
23458
23059
22938
23401
23316
23165
23231
23328
23175
23023
23042
23187
23254
23235
23317
23297
23012
23200
23171
23163
23063
23133
23134
23224
23144
23419
23086
23150
23396
23309
23019
23209
22909
23244
23182
23045
23132
23325
23200
23301
23367
23410
22892
23098
23291.2 23164.6 23250.2 23062.8 23084.2 23140.6 23142.6 23160.6 23293.8 23178.4 23270.6
5937
18719
5801
5980
5886
6240
5605
5875
5851
5723
5976
18640
5638
5890
5987
5911
5700
6072
5919
5679
5810
5893
6163
5916
18843
5607
5977
5832
5977
5743
5590
5938
5705
5842
5852
5703
6020
5920
18839
5851
5833
5648
5816
5860
18574
5537
5953
5839
5584
6025
5958
5796
5735
5929
5893
5929 5865.3 5636.4 6034.5
5930
18723
5756.8 5823.4 5650.2 5918.2
5891
0.24717 0.25139 0.24302 0.25661 0.2552 0.25622 0.25344 0.24336 0.25906 0.25584 0.80458
3.96
4.28
4.28
4.24
3.88
3.72
3.72
3.40
3.88
3.80
3.92
5.11
5.28
23237
23374
23257
23498
23354
23344
5460
5567
5573
5380
5600
5516
0.236292
69
O 20
-
0.9755
♦
Calibration Data Using in
Regression Analysis
■
Calibration Data Not Used in
Regression Analysis
Linear (Calibration Data
Using in Regression
Analysis)_________________
Neutron Probe Count Ratio
Figure 10. Neutron Probe Calibration Data.
APPENDIX B
NEUTRON COUNTS FOR MILL GULCH
71
T a b le 11.
N eu tr o n p r o b e c o u n ts c o lle c te d fro m th e M ill G u lch w a ste r o c k r e p o s ito r y on
M a y 2 2 , 1996.
Tube
DaltTime
Tcchnician
Shield
Counts
Lower West
Lower Center Lower East
Middle West Middle Center Middle East Top West
Top Last
5-21-96
5-21-96
5-21-96
5-21-96
5-21-96
5-21-96
5-21-96
5-22-96
1312
1335
1354
1419
1450
1520
1607
719
JDG
JDG
JDG
JDG
JDG
JDG
JDG
JDG
22095
22407
23190
22785
23181
23311
23335
23455
21959
22639
23054
22581
23128
23460
22965
23568
22176
22821
22657
22620
23018
23374
23079
23613
22287
22640
23085
22963
23080
23197
23130
23501
22035
22679
23046
22592
22958
23302
23240
23542
22110.4
22637.2
23006.4
22708.2
23073
233288
23149.8
23535.8
Mean Shield
Depth Incremeiit(ft)
0.25 - 0.75
0.75- 1.25
1.25-1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9 .5 - 10.5
10.5- 17.5
17.5-22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5-42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
1702
8430
10409
10845
10214
17771
20176
19119
18741
17600
15845
12382
13564
14929
9345
7972
7811
6641
7855
3987
4255
4541
6655
3322
6390
8273
1988
9243
10024
10461
10404
15450
21483
20016
19602
20156
19482
21069
20231
18248
9048
8383
8572
5645
4203
6104
7016
7609
. 4937
4521
6935
6864
1637
7474
9660
10298
11285
19315
21467
21110
19880
19115
17795
15429
15563
15136
8446
8660
6129
5707
5685
7841
7028
7697
5863
4744
6626
6945
282
1345
7283
10588
10880
10883
10732
10799
10288
13806
22286
20053
11668
10065
9644
9743
9426
9677
8700
7904
8602
9520
9504
8505
7917
8671
8656
9372
821
3914
11453
13707
11401
12207
13699
19302
20677
21697
19805
19617
11980
9570
9085
8826
8647
9315
9635
10766
10446
10155
10760
9630
4488
6035
7310
8407
304
1747
8409
12274
12433
I 1886
12467
13082
18440
20668
20599
19800
16313
10305
9707
9256
9368
9680
9566
11052
10234
9402
8708
7583
5509
6453
5691
4948
3538
10680
12167
12752
13613
13005
12726
16597
22720
17229
12053
12989
12247
11656
9203
8455
7174
7568
6389
5226
7015
9854
6967
7307
8042
8364
6828
6660
1504
8054
10799
10985
10881
11264
11725
19614
22828
20513
14685
13987
13738
12250
11156
10119
6853
6542
6027
8388
5724
10379
8853
7164
9969
6751
6546
7967
72
Table 11 continued.
Tube
Date
Time
Technician
Shield
Counts
Neutron probe counts collected from the Mill Gulch waste rock repository
on May 22, 1996.
L o w e r W est
L o w e r C e n te r
L o w e r E ast
M id d le W e s t
M id d le C e n te r
M id d le E a s t
T o p W est
5 -2 1 -9 6
5 -2 1 -9 6
5 -2 1 -9 6
5 -2 1 -9 6
5 -2 1 -9 6
5 -2 1 -9 6
5 -2 1 -9 6
1312
JD G
1335
JD G
1354
JD G
1419
JD G
1450
JD G
1520
JD G
I o p E ast
5 -2 2 -9 6
1607
JD G
719
JD G
22095
22407
23190
22785
23181
2 3 3 11
23335
23455
21959
22639
23054
22581
23128
23460
22965
23568
22176
22821
22657
22620
23018
23374
23079
23613
22287
22640
23085
22963
23080
23197
23130
23501
22035
22679
23046
22592
22958
23302
23240
23542
2 2 1 1 0 .4
2 2 6 3 7 .2
2 3 0 0 6 .4
2 2 7 0 8 .2
23073
2 3 3 2 8 .8
2 3 1 4 9 .8
2 3 5 3 5 .8
7 2 .5 - 7 7 .5
10218
10650
3799
7899
6444
7 7 .5 - 8 2 .5
5998
3834
3521
7148
9537
8 2 .5 - 8 7 .5
7018
4609
4334
7192
4288
6217
Mean Shield
Depth Incremen K
m
8 7 .5 - 9 2 .5
3796
2917
3831
5290
9 2 .5 - 9 7 .5
9445
4783
2820
5584
6544
9 7 . 5 - 1 0 2 .5
3830
5254
2935
5957
6279
1 0 2 .5 - 1 0 7 .5
3335
3761
9906
5937
5660
1 0 7 .5 -1 1 2 .5
3460
3130
4520
5879
7113
1 1 2 .5 -1 1 7 .5
3828
3780
3257
6442
6678
1 1 7 .5 -1 2 2 .5
4183
3855
7417
5181
8399
1 2 2 . 5 - 1 2 7 .5
4131
4226
4466
7376
591 I
1 2 7 . 5 - 1 3 2 .5
3268
5598
4629
5817
8466
1 3 2 . 5 - 1 3 7 .5
3027
3420
3914
7553
8292
1 3 7 . 5 - 1 4 2 .5
9547
3455
3624
9326
8814
1 4 2 . 5 - 1 4 7 .5
10826
10790
2417
7936
7414
9224
2364
7608
6645
1 4 7 . 5 - 1 5 2 .5
1 5 2 . 5 - 1 5 7 .5
5060
7237
3411
1 5 7 . 5 - 1 6 2 .5
9360
4680
2339
1 6 2 . 5 - 1 6 7 .5
2457
2277
1 6 7 . 5 - 1 7 2 .5
2623
2165
1 7 2 . 5 - 1 7 7 .5
1955
3234
1 7 7 . 5 - 1 8 2 .5
2250
6454
1 8 2 . 5 - 1 8 7 .5
3765
6708
1 8 7 . 5 - 1 9 2 .5
3889
7829
1 9 2 . 5 - 1 9 7 .5
6410
9414
1 9 7 .5 -2 0 2 .5
7167
4638
2 0 2 .5 - 2 0 7 .5
4754
2 0 7 .5 -2 1 2 .5
4533
2 1 2 .5 -2 1 7 .5
3213
2 1 7 .5 -2 2 2 .5
3579
2 2 2 .5 - 2 2 7 .5
3773
2 2 7 .5 - 2 3 2 .5
2963
2 3 2 .5 - 2 3 7 .5
3259
2 3 7 .5 - 2 4 2 .5
3186
2 4 2 .5 - 2 4 7 .5
3214
2 4 7 .5 - 2 5 2 .5
3492
2 5 2 .5 - 2 5 7 .5
3716
2 5 7 .5 - 2 6 2 .5
3724
2 6 2 .5 - 2 6 7 .5
4067
2 6 7 .5 - 2 7 2 .5
4595
2 7 2 .5 - 2 7 7 .5
4186
2 7 7 .5 - 2 8 2 .5
3557
2 8 2 .5 - 2 8 7 .5
3417
2 8 7 .5 - 2 9 2 .5
3888
2 9 2 .5 - 2 9 7 .5
3963
2 9 7 .5 -3 0 1 .5
4097
3 0 1 .5 - 3 0 3
4851
303 - 305
8391
305 - 307
8916
307 - 309
9657
3 0 9 -3 1 1
11463
311 -3 1 3
9657
73
T a b le 12. N eu tro n p rob e co u n ts c o lle c te d from the M ill G u lch w a ste rock re p o sito ry on
June 2 5 , 1996.
Tube
Date
I imc
I echnician
Shield
C oimts
Low er W est
6-25-96
858am
Bets
22561
22864
22840
22637
22915
Mean Shield
22763.4
Depth Increinent(ft)
11.25 - 0.75
2291
0.75 - 1.25
7481
1.25 - 1.75
9328
1.75-2.25
11361
2.25 - 2.75
12245
2.75 - 3.25
12312
325 - 3.75
12590
3.75 - 4.25
18213
4.25 - 4.75
20871
4.75 - 5.25
19599
5.25 - 5.75
19506
5.75 - 6.5
18802
6.5 - 7.5
16468
7.5 - 8.5
13099
8.5 - 9.5
14343
9 .5 - 10.5
15385
10.5- 17.5
9626
17.5-22.5
8246
22.5 - 27.5
7963
27.5 - 32.5
6814
32.5 - 37.5
7812
37.5 - 42.5
4012
42.5 - 47.5
4196
47.5 - 52.5
4525
52.5 - 57.5
6699
57.5 - 62.5
3191
62.5 - 67.5
6467
67.5 - 72.5
8386
Lower Center
6-25-96
1028am
Bets
22491
22116
22235
22291
22529
22332.4
Lower East
6-25-96
832am
Bets
22495
22492
22507
22497
22656
22529.4
300
762
4678
10168
10988
10863
11088
14564
21033
19799
19673
19976
19354
20884
20329
18597
9053
8180
8345
5654
4287
6099
6790
7719
1156
6009
8634
9781
10408
10814
12088
19239
21293
20727
4895
4478
6852
7004
19913
19268
18258
16441
15902
15335
8395
8408
6019
5512
5583
7870
7014
7492
5766
4761
6549
6849
Middle West
6-25-96
1224pm
Bets
23156
23240
22969
23195
23052
23122.4
2631
1647
7412
11355
11689
11567
11474
11507
11312
15784
22665
21324
12281
10123
9664
9564
9453
9742
8715
7795
8694
9631
9544
8564
7848
8753
8808
9560
M iddle Center
6-25-96
1150am
Bets
22499
22639
22684
22643
22897
22672.4
700
4489
10079
14160
11990
14010
14450
18378
20873
21648
20076
19541
12668
9671
9031
8812
8592
9198
9392
10676
9815
10110
10512
9587
4460
5708
7237
8349
Middle East
6-25-96
1256pm
Bets
23060
23056
23053
22957
2 3 2 15
23068.2
1396
9066
12864
12999
12247
12663
13477
16978
20571
20703
19941
14450
10291
9645
9345
9345
9568
9476
I 1019
10428
9793
8534
7533
5625
6655
6298
5220
Top West
6-24-96
3 1Oprn
Bets
23237
23413
23122
23253
23334
23271.8
Top East
6-24-96
4 pm
Bets
23830
24100
23823
24082
23946
23956.2
2635
11254
12157
12879
13690
13445
13056
16510
22580
18362
12504
13155
12902
12126
9674
8460
7241
7520
6563
5125
6920
9845
7090
7416
8209
8365
6667
6583
1077
8864
10965
non
11038
I 1228
11273
18650
23656
22001
14681
13741
13335
11689
10430
9814
6831
7051
5707
8333
6039
9904
8913
7458
9698
7232
6687
8204
74
T a b le 12 c o n tin u e d
N e u tr o n p ro b e c o u n ts c o lle c te d fro m th e M ill G u lc h w a s te
ro c k r e p o s ito ry o n Ju n e 2 5 , 1996.
T ube
L o w er W est
L o w e r C e n te r
L o w e r E ast
M id d le W e st
M id d le C e n te r
M id d le E a st
T o p W est
T o p E asi
D a le
6 -2 5 -%
6 -2 5 -%
6 -2 5 -%
6 -2 5 -9 6
6 -2 5 -9 6
6 -2 5 -%
6 -2 4 -9 6
0 -2 4 -9 6
T im e
858am
1028am
832am
1224 pm
115 0 am
12 5 6 p m
3 1O p in
4pm
T e c h n ic ia n
B e ts
B e ts
B e ts
B e ts
B e ts
B e ts
B e ts
B e ts
S h ie ld
22561
22491
22495
23156
22499
23060
23237
23830
C o u n ts
22864
22116
22492
23240
22639
23056
23413
24100
23823
M e a n S h ie ld
D e p th
22840
22235
22507
22969
22684
23053
23122
22637
22291
22497
23195
22643
22957
23253
24082
22915
22529
22656
23052
22897
23215
23334
23946
2 2 7 6 3 .4
2 2 3 3 2 .4
22529 4
2 3 1 2 2 .4
2 2 6 7 2 .4
23068 2
1 0 4 11
23271
8
23056 2
6344
In c re m e n t(T t)
7 2 .5 - 7 7 .5
10032
3768
8164
7 7 .5 - 8 2 .5
6296
36351
3569
7074
% 44
8 2 .5 - 8 7 .5
7331
4399
4194
7188
4427
6059
8 7 .5 - 9 2 .5
3741
2901
3764
5235
9 2 .5 - 9 7 .5
9353
4728
2917
5632
6595
9 7 .5 - 1 0 2 .5
3900
5376
2836
6072
6021
1 0 2 . 5 - 1 0 7 .5
3293
3888
9650
5717
5532
1 0 7 . 5 - 1 1 2 .5
3378
3032
4448
6134
7091
1 1 2 .5 -1 1 7 .5
3842
3721
3381
6362
6613
1 1 7 . 5 - 1 2 2 .5
4069
3628
7120
5291
8366
1 2 2 .5 - 1 2 7 .5
3853
4019
4245
7235
5912
1 2 7 . 5 - 1 3 2 .5
3497
5327
4589
5692
8271
1 3 2 . 5 - 1 3 7 .5
3048
3314
3874
7551
8396
1 3 7 . 5 - 1 4 2 .5
9340
3371
3853
9251
8731
1 4 2 . 5 - 1 4 7 .5
1 1038
10504
2441
9138
7162
9203
2611
7424
6729
1 4 7 . 5 - 1 5 2 .5
1 5 2 . 5 - 1 5 7 .5
5469
7410
3434
1 5 7 . 5 - 1 6 2 .5
4672
2343
1 6 2 . 5 - 1 6 7 .5
2415
2167
1 6 7 . 5 - 1 7 2 .5
2642
2192
1 7 2 . 5 - 1 7 7 .5
1916
3254
1 7 7 . 5 - 1 8 2 .5
2138
6528
1 8 2 . 5 - 1 8 7 .5
3485
6509
1 8 7 . 5 - 1 9 2 .5
3777
7891
1 9 2 .5 - 1 9 7 .5
6172
9590
1 9 7 .5 -2 0 2 .5
7072
4486
2 0 2 .5 - 2 0 7 .5
4561
2 0 7 .5 - 2 1 2 .5
4465
2 1 2 .5 -2 1 7 .5
3128
2 1 7 . 5 - 2 2 2 .5
3704
2 2 2 .5 - 2 2 7 .5
3655
2 2 7 .5 - 2 3 2 .5
3053
2 3 2 .5 - 2 3 7 .5
3208
2 3 7 .5 - 2 4 2 .5
3084
2 4 2 .5 - 2 4 7 .5
3196
2 4 7 .5 - 2 5 2 .5
3468
2 5 2 .5 - 2 5 7 .5
3795
2 5 7 .5 - 2 6 2 .5
3806
2 6 2 .5 - 2 6 7 .5
4129
2 6 7 .5 - 2 7 2 .5
4555
2 7 2 .5 - 2 7 7 .5
4219
2 7 7 .5 - 2 8 2 .5
3509
2 8 2 .5 - 2 8 7 .5
3365
2 8 7 .5 - 2 9 2 .5
3931
2 9 2 .5 - 2 9 7 .5
3855
2 9 7 .5 -3 0 1 .5
4191
3 0 1 .5 -3 0 3
4770
303 - 305
7824
305 - 307
8655
307 - 309
9761
3 0 9 -3 1 1
10881
3 1 1 -3 1 3
9657
75
T ab le 13.
N eu tro n p rob e co u n ts c o lle c te d from the M ill G u lch w a ste
rock rep o sito ry on July 2 3 , 1996.
Tube
Date
Time
Technician
Shield
Counts
Lower West
7-22-96
4pm
Bets
22351
22085
22560
22368
22548
22382.4
Lower Center
7-22-96
425pm
Bets
22918
22819
23078
23081
22891
22957.4
1267
4218
7227
9636
10645
10661
10486
15998
21296
19830
19673
19072
16923
13749
788
2644
7195
10368
10319
10252
10420
14066
21006
20601
19967
20233
20012
21850
20732
19202
9528
8425
8363
5794
4181
6278
6994
7815
4987
4598
7091
6978
Mean Shield
Depth Increment (ft)
0.25 - 0.75
0.75- 1.25
1.25- 1.75
1.75-2.25
2.25-2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5- 10.5
10.5-17.5
17.5-22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
14823
15968
9872
8289
8030
6875
7867
3914
4286
4508
6793
3320
6505
8260
Lower East
7-22-96
450pm
Bets
23012
22957
22780
23040
22746
22907
5751
2577
6328
8810
9685
10145
10859
17726
22021
21187
20133
20140
18891
17417
17123
16631
8561
8823
6295
5827
5635
8043
6994
7887
5889
4934
6619
6710
Middle West
7-23-96
745am
Bets
22349
22367
22479
Middle Center
7-23-96
830am
Bets
22751
22992
23055
22470
22986
22180
22965
22369
22949.8
219
713
4995
10319
11189
10994
11491
12298
16073
20194
20025
19395
14738
10006
9590
9075
9249
9488
9646
10495
10177
9509
8251
7301
5309
6439
6552
5146
366
2154
7502
14147
10663
11493
12561
17950
21007
22281
20349
19470
13597
9891
9090
8764
8831
9246
9354
10703
10079
10179
10751
9986
4366
5760
7310
8438
Middle East
7-23-96
905am
Bets
23474
23091
23388
23289
23106
23 2 6 9 6
Top West
7-23-96
1005am
Bets
22504
22437
22380
22321
22392
22406 8
Top East
7-23-96
I 106am
Bets
23236
23071
23126
23177
23321
23186.2
245
741
4590
9373
10510
10618
10439
10782
10155
12542
22448
21821
12526
10110
9946
9817
9459
9923
8744
8065
8757
9620
9431
8591
7804
8868
9024
9458
758
6703
11489
12380
13305
12878
12704
15309
21916
18586
12671
13010
12448
11797
9607
8376
7214
7545
6460
4907
6779
9730
7065
7246
8031
8084
6457
6364
780
5661
9954
10319
10309
10681
10789
17016
22572
21083
15170
13158
12852
11353
9806
9413
6501
6912
5445
8020
5919
9749
8412
7203
9554
6963
6389
7795
76
Table 13 c o n tin u e d .
N e u tro n p ro b e c o u n ts c o lle c te d fro m th e M ill G u lc h w a ste
ro c k r e p o s ito ry o n Ju ly 2 3 , 1996.
T ube
L o w e r W est
L o w e r C e n te r
L o w er E ast
M id d le W e s t
M id d le C e n te r
M id d le E a s t
T o p W est
T o p E ast
D a le
7 -2 2 -9 6
7 -2 2 -9 6
7 -2 2 -9 6
7 -2 3 -9 6
7 -2 3 -9 6
7 -2 3 -9 6
7 -2 3 -9 6
7 -2 3 -9 6
T im e
4 pm
425pm
450pm
745am
830am
905am
1005am
1 106am
I
B e ts
B e ts
B e ts
B e ts
B e ts
B e ts
B e ts
B e ts
e c h n ic ia n
S h ie ld
M e a n S h ie ld
22351
22918
23012
22349
22751
23474
22504
23236
22085
22819
22957
22367
22992
23091
22437
23071
23126
22560
23078
22780
22479
23055
23388
22380
22368
23081
23040
22470
22986
23289
22321
23177
22548
22891
22746
22180
22965
23106
22392
23321
2 2 3 8 2 .4
2 2 9 5 7 .4
22907
2 2 4 0 6 .8
2 3 1 8 6 .2
22369
2 2 9 4 9 .8
2 3 2 6 9 .6
7 2 .5 - 7 7 .5
3809
10797
10283
8016
6131
7 7 .5 - 8 2 .5
3490
3911
6400
6796
9251
4259
D e p th In c r e m e n t(ft)
8 2 .5 - 8 7 .5
4277
4368
7346
7223
8 7 .5 - 9 2 .5
3694
2827
3643
5324
5949
9 2 .5 - 9 7 .5
2951
4535
9327
5516
6499
9 7 . 5 - 1 0 2 .5
2787
5477
4204
6005
5956
1 0 2 . 5 - 1 0 7 .5
9698
3900
3244
5669
5390
1 0 7 .5 -1 1 2 .5
4483
3143
3426
5984
6907
1 1 2 . 5 - 1 1 7 .5
3267
3728
3750
6324
6383
1 1 7 .5 -1 2 2 .5
6914
3701
3984
5247
7935
1 2 2 . 5 - 1 2 7 .5
4142
3935
2985
7291
5714
1 2 7 . 5 - 1 3 2 .5
4236
5335
3505
5678
8019
1 3 2 . 5 - 1 3 7 .5
3911
3388
2986
7559
8232
1 3 7 . 5 - 1 4 2 .5
3827
3525
9265
9157
8431
1 4 2 . 5 - 1 4 7 .5
2455
10634
1 1091
8139
7012
1 4 7 . 5 - 1 5 2 .5
2708
9080
7490
6385
1 5 2 . 5 - 1 5 7 .5
5310
7241
3340
1 5 7 . 5 - 1 6 2 .5
7957
4577
2257
1 6 2 . 5 - 1 6 7 .5
2327
2137
1 6 7 . 5 - 1 7 2 .5
2621
2052
1 7 2 . 5 - 1 7 7 .5
1815
3139
1 7 7 . 5 - 1 8 2 .5
2085
6236
1 8 2 . 5 - 1 8 7 .5
3570
6419
1 8 7 . 5 - 1 9 2 .5
3787
7650
1 9 2 . 5 - 1 9 7 .5
6125
9135
1 9 7 .5 - 2 0 2 .5
7228
4195
2 0 2 .5 - 2 0 7 .5
4550
2 0 7 . 5 - 2 1 2 .5
4388
2 1 2 .5 -2 1 7 .5
3108
2 1 7 .5 -2 2 2 .5
3608
2 2 2 .5 - 2 2 7 .5
3575
2 2 7 .5 - 2 3 2 .5
2917
2 3 2 .5 - 2 3 7 .5
3154
2 3 7 .5 - 2 4 2 .5
2953
2 4 2 .5 - 2 4 7 .5
3174
2 4 7 .5 - 2 5 2 .5
3304
2 5 2 .5 - 2 5 7 .5
3613
2 5 7 .5 - 2 6 2 .5
3744
2 6 2 .5 - 2 6 7 .5
3982
2 6 7 .5 - 2 7 2 .5
4384
2 7 2 .5 - 2 7 7 .5
4103
2 7 7 .5 - 2 8 2 .5
3426
2 8 2 .5 - 2 8 7 .5
3273
2 8 7 .5 - 2 9 2 .5
3691
2 9 2 .5 - 2 9 7 .5
3822
2 9 7 .5 -3 0 1 .5
4043
3 0 1 .5 -3 0 3
4548
303 - 305
7899
305 - 307
8465
307 - 309
9525
3 0 9 -3 1 1
1013
311 -3 1 3
10446
3 1 3 -3 1 5
10395
77
T a b le 14.
N eu tro n p rob e co u n ts c o lle c te d from th e M ill G u lch w a ste rock
rep o sito ry on A u g u st 16, 1996.
Tube
Date
Time
Technician
Shield
Counts
Lower West
8-15-96
250pm
Betsy
22594
22717
22641
22756
22776
22696.8
Lower Center
8-15-96
230pm
Betsy
22376
22171
22465
22423
22401
22367.2
Lower East
8-15-96
205pm
Betsy
22074
21897
22000
22038
22308
22063.4
Middle West
8-16-96
925am
Betsy
22799
23243
22826
22842
23270
22996
Middle Center
8-16-96
835am
Betsy
22681
22698
23023
22719
22968
22817.8
Middle East
8-16-96
755am
Betsy
22884
22399
22683
22689
22425
22616
Top West
8 -15-96
345pm
Betsy
22225
22401
22130
22079
22266
22220.2
Top East
8 -15-96
425pm
Betsy
22725
22583
22687
22576
22513
22616.8
872
3216
6657
9189
10416
10592
10320
16710
21208
19500
18896
16844
14000
15245
16329
9713
8281
7875
6773
7904
8041
4384
4449
6776
6870
3482
6506
8490
760
2396'
6678
9874
9991
9913
10013
13964
21594
20341
19720
20167
19741
21634
20487
19394
9433
8360
8583
5837
4112
6110
6884
8007
4989
4673
7041
7012
512
1920
5046
8095
9228
9555
10546
17958
21520
20570
19693
19413
18693
17511
17398
16438
8436
8490
5969
5663
5624
7913
6965
7794
5877
4762
6520
6476
238
678
3702
8855
9840
10302
10036
10419
10008
11826
22665
21115
12445
10199
9938
9842
9557
9980
8890
8180
8794
9710
9379
8797
7814
8747
8766
9156
363
1810
6748
12458
10249
11215
12087
17100
21074
22291
20579
19760
13708
9802
8980
8902
8735
9104
9499
10736
10026
10174
10957
9793
4325
5748
7436
8342
269
613
3932
9554
10528
10616
11359
12199
15885
20422
20317
19853
14566
10188
9592
9186
9319
9725
9436
10729
10374
9530
8317
7487
5222
6467
6633
5114
5950
10993
12086
12824
12776
12413
15166
21848
18742
12191
12744
12322
11658
9472
8441
7301
7514
6454
5095
6934
9627
7126
7158
7953
8274
6440
6327
5613
9851
10468
10206
10649
10633
16966
23441
21441
15242
13264
12973
11321
9811
9268
6776
6782
5644
8183
5951
9592
8956
7104
9773
7076
6589
8015
Mean Shield
Depth Incremen t(ft)
0.25 - 0.75
0.75 - 1.25
1.25- 1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5-10.5
10.5-17.5
17.5-22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
78
T a b le 14 c o n tin u e d .
N e u tro n p ro b e c o u n ts c o lle c te d fro m th e M ill G u lc h w a s te ro ck
re p o sito ry on A u g u s t 16. 1996.
T ube
L o w e r W est
L o w e r C e n te r
L o w e r E ast
M id d le W e st
M id d le C e n te r
M id d le E ast
T o p W est
T o p E ast
D a le
8 -1 5 -9 6
8 -1 5 -9 6
8 -1 5 -9 6
8 -1 6 -9 6
8 -1 6 -9 6
8 -1 6 -9 6
8 -1 5 -9 6
8 - 15 - 9 6
T im e
T e c h n ic ia n
250pm
230pm
205pm
925am
835am
755am
345pm
425pm
B c ls y
B e ls y
B e ls y
B e ts y
B e ts v
B e ls y
B e ts y
B e ls v
S h ie ld
22594
22376
22074
22799
22681
22884
22225
22725
C o u n ts
22717
22171
21897
23243
22698
22399
22401
22583
22641
22465
22000
22826
23023
22683
22130
22687
22756
22423
22038
22842
22719
22689
22079
22576
22776
22401
22308
23270
22968
22425
22266
22513
2 2 6 9 6 .8
2 2 3 6 7 .2
2 2 0 6 3 .4
22996
2 2 8 1 7 .8
22616
2 2 2 2 0 .2
2 2 6 1 6 .8
7 2 .5 - 7 7 .5
10197
10599
3847
7822
6 .1 4 0
7 7 .5 - 8 2 .5
6546
3819
3525
6830
9549
8 2 .5 - 8 7 .5
8 7 .5 - 9 2 .5
M e a n S h ie ld
D e p th In c re n e n t( f t)
7194
4365
4223
7170
4181
3751
2798
3681
5487
6025
9 2 .5 - 9 7 .5
9461
4540
3042
5459
6472
9 7 . 5 - 1 0 2 .5
3920
5440
2900
5883
5993
1 0 2 . 5 - 1 0 7 .5
3368
4032
9712
5763
5460
1 0 7 . 5 - 1 1 2 .5
3438
3274
4588
6092
7136
1 1 2 . 5 - 1 1 7 .5
3758
3808
3303
631 I
6431
1 1 7 .5 -1 2 2 .5
4016
3644
3963
5281
8198
1 2 2 .5 -1 2 7 .5
2974
4092
4111
7373
5630
1 2 7 . 5 - 1 3 2 .5
3440
5111
4119
5828
8205
1 3 2 . 5 - 1 3 7 .5
2976
3453
4015
7318
8230
3933]
9156
8727
2463
7945'
7157
2622
73641
6462
1 3 7 . 5 - 1 4 2 .5
9337
3426
1 4 2 . 5 - 1 4 7 .5
11089
10795
1 4 7 . 5 - 1 5 2 .5
1 5 2 .5 - 1 5 7 .5
5436
7117
3538
1 5 7 . 5 - 1 6 2 .5
8128
4540
2298
1 6 2 . 5 - 1 6 7 .5
2425
2171
1 6 7 . 5 - 1 7 2 .5
2498
2127
1 7 2 . 5 - 1 7 7 .5
1828
3384
1 7 7 . 5 - 1 8 2 .5
2104
6411
1 8 2 . 5 - 1 8 7 .5
3542
6683
1 8 7 . 5 - 1 9 2 .5
3764
7607
1 9 2 . 5 - 1 9 7 .5
6 0 4 1
9371
1 9 7 .5 -2 0 2 .5
6977
4345
2 0 2 .5 - 2 0 7 .5
4585
2 0 7 .5 -2 1 2 .5
4420
2 1 2 .5 -2 1 7 .5
3140
2 1 7 .5 -2 2 2 .5
1763
2 2 2 .5 - 2 2 7 .5
3557
2 2 7 .5 - 2 3 2 .5
2988
2 3 2 .5 - 2 3 7 .5
2 3 7 .5 - 2 4 2 .5
2 4 2 .5 - 2 4 7 .5
3114
3023
3066
2 4 7 .5 - 2 5 2 .5
3371
2 5 2 .5 - 2 5 7 .5
3659
2 5 7 .5 - 2 6 2 .5
3721
2 6 2 .5 - 2 6 7 .5
3992
2 6 7 .5 - 2 7 2 .5
4492
2 7 2 .5 - 2 7 7 .5
4134
2 7 7 .5 - 2 8 2 .5
3371
2 8 2 .5 - 2 8 7 .5
3260
2 8 7 . 5 - 2 9 2 .5
3628
2 9 2 .5 - 2 9 7 .5
3849
2 9 7 .5 -3 0 1 .5
4108
3 0 1 .5 -3 0 3
4881
303 - 305
305 - 307
307 - 309
3 0 9 -3 1 1
7882
8619
9580
10534
3 1 1 -3 1 3
10389
3 1 3 -3 1 5
10598
79
T a b le 15.
N e u tr o n p ro b e c o u n ts c o lle c te d from th e M ill G u lch w a ste rock
r e p o sito r y o n S e p te m b e r 2 4 , 1 9 9 6 .
Tube
Date
Time
Technician
Shield
Counts
Lower West
9-23-96
225pm
Betsy
23422
23566
23156
23666
23430
23448
Mean Shield
Depth Incremen t(ft)
0.25 - 0.75
0 .7 5 -1 .2 5
1.25- 1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 - 10.5
10.5-17.5
17.5-22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
2468
8025
9295
10325
10688
11219
10792
16819
21282
19706
19455
18953
17354
14222
15612
17042
9927
8338
7780
6734
8183
4108
4223
4748
6841
3267
6414
8480
Lower Center
9-23-96
205pm
Betsy
22885
22836
22994
23150
23043
22981.6
3140
7284
10610
10680
10706
10463
10702
14718
21755
20566
19890
20463
19565
21841
20697
19868
9194
8382
8492
5730
4232
6219
6949
7707
5001
4670
6970
6863
Lower East
9-23-96
135pm
Betsy
22892
22987
22681
22700
22763
22804.6
1198
5883
8654
9371
M iddle West
9-23-96
425pm
Betsy
M iddle Center
9-23-96
350pm
Betsy
23163
23068
23144
23184
23080
23459
23473
23366
23201
23171
23212.2
23249.6
249
9703
10126
11084
17776
917
6297
9950
10701
10915
10744
10667
21793
20530
19935
19389
18771
18021
17711
10626
12579
22471
21796
12517
10068
9561
17453
8559
8691
9885
9567
9667
8713
8254
8808
9596
9329
8686
7843
8966
8997
9357
6051
5588
5698
7712
6968
7926
5918
4751
6328
6517
765
3409
9281
15061
11274
12089
13975
17821
21117
22497
21158
19989
14603
9865
9098
8959
8814
9328
9345
10753
9950
10264
10890
9766
4420
5910
7503
8850
M iddle East
9-23-96
315pm
Betsy
22523
22997
22767
22998
22882
22833.4
Top West
9-24-90
9am
Betsv
23181
23037
22884
23474
23045
23124.2
Top East
9-24-96
740am
Betsv
22980
23140
23035
23086
23354
23119
254
915
7145
10959
627
11554
12179
321
2165
10600
10644
10521
10662
10990
16753
22752
21378
14615
12844
12801
11475
9900
I 1806
11410
11588
12516
15970
2061 I
20276
19865
14896
10342
9541
9181
9299
9649
9313
10701
10086
9617
8252
7358
5396
6502
6711
5363
12635
13340
13170
12741
15987
22154
16552
12179
12571
12403
11834
9120
8342
7176
7360
6623
5153
6809
9649
7199
7163
7809
8424
6409
6551
9275
6546
6950
5688
8010
5906
9650
8602
7437
9408
7123
6610
7894
80
T a b le 15 co n tin u e d .
T ube
D a le
T im e
T e c h n ic ia n
S h ie ld
C o u n ts
M e a n S h ie ld
Low er West
9-23-96
225pm
Betsy
23422
23566
23156
23666
23430
23448
N e u tro n p ro b e co u n ts co llected from the M ill G u lch w aste rock
re p o sito ry o n S e p tem b er 2 4. 1996.
Lower Center
9-23-96
205pm
Betsy
22885
22836
22994
23150
23043
22981 6
Lower East
9-23-96
135pm
Betsy
22892
22987
22681
22700
22763
22804 6
Middle West
9-23-96
425pm
Betsy
23163
23144
23080
23473
23201
23212.2
Middle Center Middle East
9-23-96
9-23-96
350pm
315pm
Betsy
Betsv
23068
22523
23184
22997
23459
22767
23366
22998
23171
22882
23249.6
22833 4
Top W est
9-24-9o
9am
Bets\
23181
23037
22884
23474
23045
23124.2
Top East
9-24-96
740am
Betsv
22980
23140
23035
23086
23354
23119
D e p th In c r e m e m (fi)
7 2 .5 - 7 7 .5
7 7 .5 - 8 2 .5
8 2 .5 - 8 7 .5
8 7 .5 - 9 2 .5
9 2 .5 - 9 7 .5
9 7 . 5 - 1 0 2 .5
1 0 2 . 5 - 1 0 7 .5
1 0 7 . 5 - 1 1 2 .5
1 1 2 .5 - 1 1 7 .5
1 1 7 .5 - 1 2 2 .5
1 2 2 .5 - 1 2 7 .5
1 2 7 . 5 - 1 3 2 .5
1 3 2 .5 - 1 3 7 .5
1 3 7 .5 - 1 4 2 .5
1 4 2 . 5 - 1 4 7 .5
1 4 7 . 5 - 1 5 2 .5
1 5 2 .5 - 1 5 7 .5
1 5 7 . 5 - 1 6 2 .5
1 6 2 . 5 - 1 6 7 .5
1 6 7 . 5 - 1 7 2 .5
1 7 2 . 5 - 1 7 7 .5
1 7 7 . 5 - 1 8 2 .5
1 8 2 . 5 - 1 8 7 .5
10076
6436
7259
3730
9547
4024
3414
3516
3855
3900
2959
10544
3787
4330
2850
4519
5596
4005
3181
3845
3713
4071
3766
3646
4324
3715
2932
2898
9667
4504
3305
3764
4009
3347
2925
9238
11104
4763
3382
3466
10621
9243
3821
3889
3929
2413
2804
5621
8060
7971
6825
7098
5239
5433
5797
5766
5962
6240
5167
7212
5661
7456
9257
81 15
7470
7330
4821
2431
2588
1803
2129
1 9 2 . 5 - 1 9 7 .5
3588
3724
6069
1 9 7 .5 -2 0 2 .5
7150
1 8 7 . 5 - 1 9 2 .5
2 0 2 .5 - 2 0 7 .5
2 0 7 .5 -2 1 2 .5
2 1 2 .5 -2 1 7 .5
2 1 7 .5 -2 2 2 .5
2 2 2 .5 - 2 2 7 .5
2 2 7 .5 - 2 3 2 .5
2 3 2 .5 - 2 3 7 .5
2 3 7 .5 - 2 4 2 .5
2 4 2 .5 - 2 4 7 .5
2 4 7 .5 - 2 5 2 .5
2 5 2 .5 - 2 5 7 .5
2 5 7 .5 - 2 6 2 .5
6118
9751
4290
5981
6657
6000
5421
7008
6199
8002
5619
8069
7923
8494
7105
6429
3398
2316
2285
2154
3249
6313
6575
7363
9339
4288
4585
4441
3048
3599
5973
2929
3211
2963
3088
3283
3599
2 6 2 .5 - 2 6 7 .5
3614
3929
2 6 7 .5 - 2 7 2 .5
4339
2 7 2 .5 - 2 7 7 .5
4036
3382
3290
3657
37.39
3999
2 7 7 .5 - 2 8 2 .5
2 8 2 .5 - 2 8 7 .5
2 8 7 .5 - 2 9 2 .5
2 9 2 .5 - 2 9 7 .5
2 9 7 .5 -3 0 1 .5
3 0 1 .5 -3 0 3
303 - 305
305 - 307
307 - 309
3 0 9 -3 1 1
311 -3 1 3
3 1 3 -3 1 5
4649
7580
8665
9287
10307
10157
10345
81
T ab le 16.
N eutron probe co u n ts co llec te d from the M ill G u lch w aste rock rep ository on
O ctob er 2 8 , 1996.
Tube
Date
Time
Technician
Shield
Counts
Lower West
10-28-96
231pm
Betsy
22332
22301
22599
22364
22170
22353.2
Lower Center
10-28-96
255pm
Betsy
23149
22908
22652
22762
22891
22872.4
Lower East
10-28-96
318pm
Betsy
23264
23110
23103
23241
23141
23171.8
Middle West
10-28-96
4pm
Betsy
22125
22548
22601
22805
22816
22579
Middle Center
10-28-96
430pm
Betsy
23130
23149
23305
22938
23167
23137.8
Middle East
10-28-96
506pm
Betsy
23346
23043
23339
23161
23436
23265
Top West
10-29-96
823am
Betsy
22812
22914
22511
22876
22701
22762.8
Top East
10-29-96
823am
Betsy
22675
23062
22816
22933
22987
22894.6
1522
6370
8262
9630
10292
10739
10238
15854
20727
19123
19076
18648
16402
14200
15689
16665
9674
7972
7611
7797
6614
3706
3902
4320
6685
3368
6473
1483
6807
10220
10525
10418
10395
10322
13656
21672
20397
19865
20397
19837
21391
21044
19759
9367
8463
8288
5830
4103
6138
6765
7728
4900
4502
6939
GBG3
714
4462
7507
9137
9612
9916
10749
18670
22325
21115
20528
19887
19044
18386
18885
17958
8600
8656
6255
5824
5798
8143
7214
7886
5927
4724
6657
5E39
2.35
747
5414
9406
10118
10226
10214
10257
10027
11621
21875
21566
12292
10150
9550
9538
9525
9822
8950
8100
8783
9392
9411
8648
7710
8948
8815
2663
8382
14402
10599
11217
12279
16792
21163
22326
21272
20043
14417
9997
9181
8789
8834
9375
9457
10980
9901
10391
10673
10042
4169
5708
7214
788
5926
10863
11250
11271
11581
12425
19237
20874
20793
20510
15507
10388
9790
9304
9403
9779
9627
10701
10347
9586
8376
7408
5443
6528
6936
8550
11679
12436
13100
12677
12460
14610
21913
18666
12351
12773
12459
11864
9100
8383
7263
7325
6534
5116
6699
9819
7039
7090
7730
8177
6283
6290
9929
10194
10296
10615
10597
15172
22561
21322
15395
12769
12647
11070
9742
9213
6714
6746
5565
8062
5881
10659
8423
6968
9391
6634
6417
5551
8357
5378
5521
7735
Mean Shield
Depth Increment(ft)
0.25 - 0.75
0 .7 5 -1 .2 5
1 .2 5 -1 .7 5
1 .7 5 -2 .2 5
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 -1 0 .5
10.5 -1 7 .5
1 7 .5 -2 2 .5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
8555
82
T able 16 continued.
Neutron probe counts collected from the M ill Gulch w aste
rock repository on O ctober 2 8 , 1996.
T ube
L o w e r W est
L o w e r C e n te r
L o w e r E ast
M id d le W e s t
M id d le C e n te r M id d le E a s t T o p W e s t
D a le
1 0 -2 8 -9 6
1 0 -2 8 -9 6
1 0 -2 8 -9 6
1 0 -2 8 -9 6
1 0 -2 8 -9 6
1 0 -2 8 -9 6
1 0 -2 9 -9 6
1 0 -2 9 -9 6
T im e
231pm
255pm
318pm
4pm
430pm
506pm
823am
823am
T echn ician
B c ls y
B e ts y
B e tsy
B e ts y
B e tsv
B e ts y
B e tsy
T o p E ast
B e ts v
Shield
22332
23149
23264
22125
23130
23346
22812
22675
C oun ts
22301
22908
23110
22548
23149
23043
22914
23062
22599
22652
23103
22601
23305
23339
22511
22816
22364
22762
23241
22805
22938
23161
22876
22933
M ean S hield
22170
22891
23141
22816
23167
23436
22701
22987
2 2 3 5 3 .2
2 2 8 7 2 .4
2 3 1 7 1 .8
22579
2 3 1 3 7 .8
23265
2 2 7 6 2 .8
2 2 8 9 4 .6
D ep th Increm en t(ft)
7 2 .5 - 7 7 .5
9943
10736
3849
7694
6143
7 7 .5 - 8 2 .5
6629
3890
3526
6878
9796
8 2 .5 - 8 7 .5
7149
4503
4336
6988
4265
8 7 .5 - 9 2 .5
9 2 .5 - 9 7 . 5
3716
2779
3797
5306
5934
9456
4522
2946
5555
6588
9 7 .5 - 1 0 2 .5
4032
5634
2927
5846
5954
1 0 2 .5 -1 0 7 .5
2333
4102
9841
5700
5403
1 0 7 .5 - 112.51
2488
3192
4584
5853
6876
1 1 2 .5 - 1 1 7 .5
1 1 7 .5 - 1 2 2 .5
3751
3830
3178
6124
6468
3994
3637
3777
5258
8056
1 2 2 .5 - 1 2 7 . 5
1 2 7 .5 - 1 3 2 .5
2965
4045
3923
7142
5481
3339
4748
3754
5570
8609
1 3 2 .5 - 1 3 7 .5
3013
3337
3757
7562
3137
1 3 7 .5 - 1 4 2 .5
9303
3402
3894
9281
8531
1 4 2 .5 - 1 4 7 .5
10938
10575
2354
7981
7082
1 4 7 .5 - 1 5 2 .5
2726
7258
10377
1 5 2 .5 - 1 5 7 .5
7278
3338
1 5 7 .5 - 1 6 2 .5
4521
2342
1 6 2 .5 - 1 6 7 .5
2208
2050
1 6 7 .5 - 1 7 2 .5
2656
2059
1 7 2 .5 - 1 7 7 .5
1735
3236
1 7 7 .5 - 1 8 2 . 5
2123
6402
1 8 2 .5 - 1 8 7 .5
3609
6309
1 8 7 .5 - 1 9 2 .5
3825
7625
1 9 2 .5 - 1 9 7 .5
6113
9245
1 9 7 .5 - 2 0 2 .5
7028
4524
2 0 2 .5 - 2 0 7 .5
4588
2 0 7 .5 - 2 1 2 .5
4316
2 1 2 .5 - 2 1 7 .5
3081
2 1 7 .5 - 2 2 2 .5
2651
2 2 2 .5 - 2 2 7 .5
36906
2 2 7 .5 - 2 3 2 .5
2970
2 3 2 .5 - 2 3 7 .5
3011
2 3 7 .5 - 2 4 2 .5
2924
2 4 2 .5 - 2 4 7 .5
3078
2 4 7 .5 - 2 5 2 .5
3463
2 5 2 .5 - 2 5 7 .5
3740
2 5 7 .5 - 2 6 2 .5
3687
2 6 2 .5 - 2 6 7 .5
3859
2 6 7 .5 - 2 7 2 .5
4421
2 7 2 .5 - 2 7 7 .5
4076
2 7 7 .5 - 2 8 2 .5
3426
2 8 2 .5 - 2 8 7 .5
3316
2 8 7 .5 - 2 9 2 .5
3538
2 9 2 .5 - 2 9 7 .5
3816
2 9 7 .5 - 3 0 1 .5
4002
3 0 1 .5 -3 0 3
303 - 305
36114
7910
305 - 307
8603
307 - 309
9473
3 0 9 -3 1 1
10799
3 1 1 -3 1 3
10216
83
Table 17.
Neutron probe counts collected from the M ill Gulch w aste rock repository on
D ecem ber 10, 1996.
T ube
D ate
T im e
T echnician
Shield
C ounts
Lower West
12-9-96
125 pm
Betsy
22453
22484
22743
22684
22474
22567.6
Lower Center
12-9-96
145pm
Betsy
22857
23347
23176
23237
22978
23119
Lower East
12-9-96
2pm
Betsy
23280
23137
23403
23471
23295
23317.2
Middle West
12-9-96
225pm
Betsy
22940
23065
22926
22982
22848
22952.2
Middle Center
12-9-96
255pm
Betsy
23351
23285
23849
22041
23059
23117
Middle East
12-9-96
325pm
Betsy
23237
23159
22707
22556
23478
23027.4
Top West
12-10-96
735am
Betsy
23458
23499
23302
23223
23653
23427
Top East
12-10-96
810am
Betsy
23383
23252
23252
23378
23408
23334.6
6839
10280
9842
9888
10324
10562
10233
16915
20747
19496
19815
19369
19989
14749
16391
17233
9662
8208
7966
6809
8013
4051
4379
4615
6616
3270
6338
8343
7115
10322
10453
10265
10265
10130
14800
21900
20581
20062
20697
19949
21991
20953
20223
19525
8397
8461
8725
5128
4120
6005
7161
7974
4966
4532
6876
6965
5003
11615
10462
9173
9696
10152
11045
18499
22385
21167
20440
20426
19236
18786
19541
18544
8521
8796
6142
5725
5805
8055
7219
8006
6043
4898
6754
6752
8390
10677
8475
9649
10012
10373
10222
10293
10006
11623
22802
21710
12562
10018
9546
9710
9332
9437
8837
7931
9012
9503
9422
8568
7741
8999
8869
9369
10944
7291
8734
14110
10457
10919
11855
17787
21282
22513
20898
20206
13928
9925
8976
8732
8820
9255
9428
10838
9895
10304
10779
9466
4413
6556
7687
8476
1646
6118
8206
10903
1137
10897
11179
12050
16080
21005
20526
20071
14786
10354
9661
9304
9482
9632
9680
10670
10248
9734
8239
7421
5400
6379
6985
5288
1389
8638
12401
12421
12949
12711
12205
14399
21514
18813
12108
12684
12493
11681
9423
8527
7130
7439
6481
4956
6811
9587
7108
7282
7720
8264
6383
6339
1089
7954
11100
11015
9754
6440
10780
16395
23092
22011
15395
12982
12970
11406
9706
9323
6923
6769
5637
8176
6113
10953
8429
7344
9594
7041
6833
7996
M ean Shield
D epth In crem ent(ft)
0.25 - 0.75
0.75 - 1.25
1.25 - 1.75
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 -1 0 .5
10.5 -1 7 .5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
84
T able 17 continued.
N eutron probe counts co llected from the M ill G ulch w aste
rock repository on D ecem ber 10, 1996.
Tube
L o w e r W est
L o w e r C e n te r
L o w er E ast
M id d le W e s t
M id d le C e n te r M id d le E a s t T o p W e s t
D a le
1 2 -9 -9 6
1 2 -9 -9 6
1 2 -9 -9 6
1 2 -9 -9 6
1 2 -9 -9 6
1 2 -9 -9 6
1 2 -1 0 -9 6
1 2 -1 0 -9 6
T im e
125pm
145pm
2pm
225pm
255pm
325pm
735am
810am
T ec h n ic ia n
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
T o p E ast
B e ts y
S hield
22453
22857
23280
22940
23351
23237
23458
23383
C oun ts
22484
23347
23137
23065
23285
23159
23499
23252
M e a n S h ield
22743
23176
23403
22926
23849
22707
23302
23252
22684
23237
23471
22982
22041
22556
23223
23378
22474
22978
23295
22848
23059
23478
23653
23408
2 2 5 6 7 .6
23119
2 3 3 1 7 .2
2 2 9 5 2 .2
23117
2 3 0 2 7 .4
23427
2 3 3 3 4 .6
10134
10723
3751
7734
6107
6569
4050
3511
6818
9631
7333
4568
4283
7112
4121
D ep th In c r e m e n t(ft)
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5-112.5
112.5-117.5
117.5-122.5
122.5 - 127.5
127.5 - 132.5
132.5 - 137.5
137.5 - 142.5
142.5 - 147.5
147.5 - 152.5
152.5 - 157.5
157.5 - 162.5
162.5 - 167.5
167.5 - 172.5
172.5 - 177.5
1775 - 1825
182.5 - 187.5
187.5 - 1925
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262J - 267.5
267.5 - 272.5
272J - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5 - 301.5
301.5 - 303
303 - 305
305 - 307
307 - 309
309 - 311
3694
2875
3661
5365
6088
9374
4710
3043
5554
6481
6027
3989
5410
2877
5887
3490
3912
9850
5775
5486
3451
3134
4649
6040
7149
3804
3708
3224
6179
6342
3969
3586
3756
5337
8204
2875
3994
3777
7167
5700
3286
4750
3905
5679
8358
2818
3297
3543
7455
8178
8764
3302
3749
9223
8703
10807
10392
2519
7982
7096
2725
9455
6729
5409
7258
3427
8075
4588
2288
2358
2279
2607
2217
1831
3292
2214
6559
3653
6475
3784
7734
6259
9282
7049
4380
4579
4455
3166
3631
3678
3006
3253
3044
3227
3378
3727
3712
3891
4359
4105
3590
3347
3747
3898
4125
4732
8070
8718
9533
10083
85
T ab le 18.
N eu tro n p ro b e c o u n ts co llec te d fro m the M ill G u lch w aste ro ck rep o sito ry on
Ja n u ary 2 1 , 1997.
T ube
D ate
T im e
T echnician
Shield
C ounts
Lower West
1-21-97
120pm
Betsy
23524
23956
23576
23880
23662
23719.6
Lower Center
1-21-97
140pm
Betsy
23258
23143
23164
23608
23365
23307.6
Lower East
1-21-97
220pm
Betsy
29453
23391
23494
23809
23487
24726.8
Middle West
1-21-97
326pm
Betsy
23800
24076
24002
24241
23870
23997.8
Middle Center
1-21-97
400pm
Betsy
23876
23876
23802
23836
23005
23679
Middle East
1-21-96
436pm
Betsy
23686
23791
23777
23917
23733
23780.8
Top West
1-21-97
515pm
Betsy
23876
24285
24303
24149
24107
24144
Top East
1-21-97
613pm
Betsy
23966
23547
23856
23542
24089
23800
5019
12547
16148
15854
12287
11296
10586
17196
21598
20246
20584
20182
18033
15455
17209
17989
9773
8081
7998
6807
7876
3958
4427
4571
6707
3276
6617
8379
6413
13596
15563
12392
10876
10054
10545
14383
21932
21057
20264
20680
20131
22226
21081
20312
9083
8395
8648
5773
.4118
6118
7053
7945
5096
4579
7067
6922
3655
10991
14764
14959
14093
10806
11279
18570
23333
21610
20466
20140
19409
19001
19764
18636
8584
8617
6749
5800
5852
8067
7149
8017
5996
4874
6640
6781
1900
10476
12302
14443
12041
10932
10580
10047
10054
11310
22203
22281
12510
10258
9704
9857
9391
9738
8979
8192
8718
9643
9378
8535
7803
8980
8905
9358
2136
8910
13336
15883
11001
11867
12573
16850
21290
22874
21307
20308
14492
9952
9116
8842
8805
9155
9392
10635
10016
10509
10888
9766
4447
5803
7153
8476
903
5412
11947
17113
13371
10685
11402
12295
13943
20918
20904
20367
15603
10489
9787
9446
8986
9673
9682
10905
10492
9550
8093
7266
5248
6713
6913
5389
1384
8652
12909
12917
13477
13011
12716
17439
21569
18971
12312
12926
12650
11871
9550
8531
7271
7481
6456
5119
6979
9647
7211
7186
8029
8291
6516
6531
1114
7370
11541
11105
10373
11065
11217
15617
22586
21533
15533
12696
12932
11384
9765
9245
6764
6708
5539
8287
6005
10701
8775
7415
9491
6990
6807
7827
M ean Shield
D epth In crem ent(ft)
0.25 - 0.75
0.75 - 1.25
1.25 -1 .7 5
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 - 10.5
10.5 -1 7 .5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
86
T a b le 18 co n tin u e d .
N e u tro n p ro b e c o u n ts co llec te d fro m th e M ill G u lc h w aste
ro c k re p o sito ry o n Ja n u a ry 21, 1997.
Tube
D a le
L o w e r W est
L o w e r C e n te r L o w e r E a s t
M id d le W e s t M id d le C e n te r M id d le E a s t T o p W e s t
1 -2 1 -9 7
1 -2 1 -9 7
1 -2 1 -9 7
1 -2 1 -9 7
1 -2 1 -9 7
1 -2 1 -9 6
1 -2 1 -9 7
1 -2 1 -9 7
T im e
120pm
140pm
220pm
326pm
400pm
436pm
515pm
613pm
T ec h n ic ia n
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts v
T o p E ast
B e ts y
S h ield
23524
23258
29453
23800
23876
23686
23876
23966
C oun ts
23956
23143
23391
24076
23876
23791
24285
23547
M e a n S hield
23576
23164
23494
24002
23802
23777
24303
23856
23880
23608
23809
24241
23836
23917
24149
23542
23662
23365
23487
23870
23005
23733
24107
24089
2 3 7 1 9 .6
2 3 3 0 7 .6
2 4 7 2 6 .8
2 3 9 9 7 .8
23679
2 3 7 8 0 .8
24144
23800
10073
10688
3832
7804
6248
6579
3889
3409
6973
9317
D ep th In c r e m e n l(Ii)
72.5-77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5-112.5
112.5 -117.5
117.5-122.5
122.5 - 127.5
127.5 - 132.5
132.5 - 137.5
137.5 - 142.5
142.5 - 147.5
147.5 - 152.5
152.5 - 157.5
157.5 - 162.5
162.5 - 167.5
167.5 - 172.5
172.5 - 177.5
177.5 - 182.5
182.5 - 187.5
187.5 - 192.5
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
2123 - 2173
217.5 - 222.5
222.5 - 227J
227.5 - 232.5
2323 - 2373
2373 - 2423
2423 - 2473
2473 - 2523
2523 - 2573
257.5 - 262.5
2623 - 2673
2673 - 2723
2723 - 2773
2773 - 2823
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5 - 301.5
3013 - 303
303 - 305
305 - 307
307 - 309
309 - 311
7469
4551
4303
7001
4152
3790
2816
3786
5332
5958
9455
4391
3071
5438
6377
3938
5518
2936
6008
5913
3370
3957
9813
5753
5353
3467
3094
4567
5954
7148
3817
3809
3205
6226
6377
4033
3697
3704
5147
8211
2887
3903
3908
7016
5604
3305
4954
3772
3698
8316
2995
3292
3444
7587
8164
8798
2351
3599
9217
8577
10365
10435
2503
8033
7134
2681
7278
6360
5583
7223
3234
8180
4654
2327
2413
2055
2584
2092
1731
3175
2173
6452
3468
6567
3665
7898
6303
9325
6986
4400
4559
4412
3108
3583
3605
3885
3161
2989
3143
3296
3682
3690
3984
4386
4162
3508
3253
3652
3795
4010
4723
7918
8542
9374
10118
87
T ab le 19.
N eutron probe counts collected from the M ill Gulch waste
rock repository on March 8, 1997.
T ube No.
D ate
Tim e
Tech.
Shield
C ounts
L o w e r W e st L o w e r C e n te r L o w e r E ast
3 /8 /9 7 3 -8-97
3 /8 /9 7
31 8 pm
255pm
231pm
4pm
B etsy
B etsy
B etsy
B etsy
M id d le W e st
3 /8 /9 7
23328
23785
23708
23178
23593
23732
23754
23346
23372
23587
23990
23571
23634
23360
23767
23885
23517
23517
23870
23998
2 3 4 4 9 .2
M ean Shield
D epth Increm ent(ft)
6115
0.25 - 0.75
11071
0.75 - 1 .2 5
13238
1.25 - 1 .7 5
15513
1.75 - 2.25
12411
2.25 - 2.75
11427
2.75 - 3.25
10813
325 - 3.75
16726
3.75 - 4.25
21376
4 .25 - 4.75
19932
4.75 - 5.25
19869
15.25 - 5.75
19825
5.75 - 6.5
18401
6.5 - 7.5
15205
7.5 - 8.5
17025
8.5 - 9.5
18058
9.5 - 1 0 .5
10002
10.5 - 1 7 .5
8164
17.5 - 22.5
7749
22.5 - 27.5
6957
27.5 - 32.5
8139
32.5 - 37.5
4213
37.5 - 42.5
4448
42.5 - 47.5
4601
47.5 - 52.5
6893
52.5 - 57.5
3396
57.5 - 62.5
6489
62.5 - 67.5
8261
67.5 - 72.5
23434
2 3 7 4 8 .2
23867
6286
3787
1305
11187
9942
8447
14092
11846
10017
14863
15341
15404
13174
14863
16176
11658
11048
14517
11380
11788
13584
14376
18836
10474
21713
22256
9742
20866
21549
11081
20349
20874
22243
20932
20730
22470
20311
20089
12586
22087
19507
10100
21513
20418
9817
20209
19251
9885
9610
8704
9465
8527
8811
9762
8592
6293
9007
5747
5942
8195
4160
5694
8803
6243
8056
9613
7148
7206
9439
8037
8176
8690
5065
5836
7757
4490
4859
8932
6917
6735
8952
7048
6873
9368
88
Table 19 continued.
Neutron probe counts collected from the M ill Gulch waste
rock repository on March 8, 1997.
Tube No.
Date
Time
Tech.
Shield
Counts
L ow er W est L o w er C enter L o w er E ast M iddle W est
3/8/97
3/8/97 3-8-97
3/8/97
4pm
318pm
255pm
231pm
B etsy
Betsy
B etsy
B etsy
23708
23785
23328
23571
23754
23732
23593
23178
23990
23587
23372
23346
23885
23767
23360
23634
23998
23870
23517
23517
23449.2
M ean Shield
Depth Increm ent(ft)
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5 -1 1 2 .5
112.5 -1 1 7 .5
117.5 -1 2 2 .5
122.5 -1 2 7 .5
127.5 - 132.5
132.5 - 137.5
137.5 - 142.5
23434
23748.2
23867
10069
6534
7317
3888
9200
4161
3418
3500
3770
3989
2978
3313
8903
10886
89
T able 20.
Neutron probe counts collected from the M ill Gulch waste
rock repository on April 9, 1997.
T ube
D ate
T im e
T echnician
Shield
C ounts
Lower West
4-8-97
231pm
Betsy
23571
23178
23346
23634
23517
23449.2
Lower Center
4-8-97
255pm
Betsy
23328
23593
23372
23360
23517
23434
Lower East
4-8-97
318pm
Betsy
23785
23732
23587
23767
23870
23748.2
Middle West
4-8-97
4pm
Betsy
23708
23754
23990
23885
23998
23867
Middle Center
4-8-97
430pm
Betsy
23804
24015
23718
24007
23837
23876.2
Middle East
4-8-97
506pm
Betsy
23705
23816
23848
23855
23704
23785.6
Top West
4-9-97
823am
Betsy
23700
24088
23914
23937
24017
23931.2
Top East
4-9-97
923am
Betsy
23744
23570
23823
23745
23484
23673.2
6115
11071
13238
15513
12411
11427
10813
16726
21376
19932
19869
19825
18401
15205
17025
18058
10002
8164
7749
6957
8139
4213
4448
4601
6893
3396
6489
8261
6286
11187
14092
14863
13174
11658
11380
14376
21713
20866
20349
20932
20311
22087
21513
20209
9610
8527
8592
5747
4160
6243
7148
.8037
5065
4490
6917
7048
3787
9942
11846
15341
14863
11048
11788
18836
22256
21549
20874
20730
20089
19507
20418
19251
8704
8811
6293
5942
5694
8056
7206
8176
5836
4859
6735
6873
1305
8447
10017
15404
16176
14517
13584
10474
9742
11081
22243
22470
12586
10100
9817
9885
9465
9762
9007
8195
8803
9613
9439
8690
7757
8932
8952
9368
1563
7927
14607
16579
11351
126541
13391
16079
21145
22500
21293
20380
14444
9795
9312
8916
8809
9300
9528
10883
9955
10343
10795
9975
4225
5635
7296
8700
493
6100
11126
16452
13560
10948
11697
13241
14028
20833
20668
20496
15953
10580
9883
9375
9275
9626
9723
11148
10937
10440
9053
7820
5702
6401
6855
5450
934
6540
12420
12909
14492
13466
12221
13693
21038
19708
12460
12616
12466
11826
9703
8740
7311
7686
6697
5044
7005
9573
7231
7174
7849
8412
6278
6560
5513
6567
10933
12466
15213
14517
11380
16056
23052
21794
16060
12798
12797
11449
10029
9370
6963
7193
5610
7983
6206
10998
9051
7526
9614
6901
6949
8039
M ean Shield
D epth Increm enV ft)
0.25 - 0.75
0.75 - 1.25
1.25 - 1.75
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 -1 0 .5
10.5 - 17.5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
90
T able 2 0 continued.
Neutron probe counts collected from the Mill G ulch waste
rock repository on A pril 9, 1997.
M id d le W e s t M id d le C e n te r M id d le E a s t T o p W e s t
T o p E ast
Tube
L o w er W est
L o w e r C e n te r L o w e r E ast
D a te
4 -8 -9 7
4 -8 -9 7
4 -8 -9 7
4 -8 -9 7
4 -8 -9 7
4 -8 -9 7
4 -9 -9 7
4 -9 -9 7
T im e
231pm
255pm
3 18pm
4pm
430pm
506pm
823am
923am
T e c h n ic ia n
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
B e ts y
S h ie ld
23571
23328
23785
23708
23804
23705
23700
23744
C o u n ts
23178
23593
23732
23754
24015
23816
24088
23570
M e a n S h ie ld
23346
23372
23587
23990
23718
23848
23914
23823
23634
23360
23767
23885
24007
23855
23937
23745
23517
23517
23870
23998
23837
23704
24017
23484
2 3 4 4 9 .2
23434
2 3 7 4 8 .2
23867
2 3 8 7 6 .2
2 3 7 8 5 .6
2 3 9 3 1 .2
2 3 6 7 3 .2
10069
10833
3760
7908
6331
6534
4075
3409
6935
9508
7317
4740
4 .3 4 5
7188
4394
3888
2827
3952
5429
5973
9200
4750
3146
5658
6624
D e p th ln c r e m e n t(ft)
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5-112.5
112.5-117.5
117.5-122.5
122.5 -127.5
127.5 - 132.5
132.5 - 137.5
137.5 - 142.5
142.5 - 147.5
147.5 - 152.5
152.5 - 157.5
157.5 - 162.5
162.5 - 167.5
167.5 - 172.5
172.5 - 177.5
177.5 - 182.5
182.5 - 187.5
187.5 - 192.5
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5-301.5
301.5 - 303
303 - 305
305 - 307
307 - 309
309-311
4161
5462
2887
5973
6010
3418
4053
9693
5752
5393
3500
3138
4692
5935
7194
3770
3738
3272
6095
6408
3989
3710
3706
5313
8227
2978
4163
3894
T T w
5887
3313
4776
3875
5893
8175
2903
3301
3509
7783
8250
3337
3238
9139
8574
10330
2449
8152
7082
6522
10886
2676
7581
5200
7399
3526
8120
4694
2230
2520
2213
2562
2082
1770
3279
2132
6532
3586
6578
3784
7654
6314
9297
7197
4376
4585
4407
3184
3703
3561
3007
3326
3089
3267
3299
3852
3648
4039
4483
4104
3570
3355
3740
3849
3974
4892
8156
8652
9611
10881
91
APPENDIX C
NEUTRON COUNT RATIOS FOR MTT.I. GULCH
92
T able 2 1 . N eutron probe count ratios collected from the M ill Gulch waste
rock repository on May 22,1996.
D e p t h (f t)
L o w er W est
L o w e r C e n te r
L o w er E ast
0 . 2 5 - 0 .7 5
M id d le C e n te r
T o p E ast
0 .0 1 2 4 1 8 4 2
0 . 7 5 - 1 .2 5
1 . 2 5 - 1 .7 5
M id d le W e st
007697735
0 .0 8 7 8 2 0 0 4 8
0 .0 7 1 1 5 4 1
1 .7 5 -2 .2 5
0 38126854
0 .4 0 8 3 1 0 2 1 5
0 .3 2 4 8 6 6 1
2 .2 5 - 2 .7 5
0 .4 7 0 7 7 3 9 3
0 .4 4 2 8 1 0 9 4 8
0 .4 1 9 8 8 3 2
0 .0 5 9 2 2 9 7 1
0 .1 6 9 6 3 5 5 0 5
0 .0 7 4 8 8 5 9 8
0 461343
0 3422021
0 .3 2 0 7 2 1 1 5
0 .4 9 6 3 8 1 0 5 1
0 .3 6 0 4 5 5 7 5
0 .5 2 5 5 7 7
0 4588329
0 .4 6 6 2 6 3 2 S
0 .5 9 4 0 7 0 9 9 2
0 52613079
0 .5 5 0 8 4 7
0 .4 6 6 7 3 5 8
0 .4 7 9 1 2 2 0 8
0 .4 9 4 1 2 7 3 3 5
0 .5 3 2 9 4 6 4
0 58804
0 462317
2 .7 5 - 3 .2 5
0 .4 9 0 4 9 3 1 6
0 .4 6 2 1 1 5 4 5 6
0 .4 4 7 6 1 4 6
0 .4 7 9 2 5 4 1 9
0 52905994
0 .5 0 9 4 9 8 9 9
0 561776
3 2 5 - 3 .7 5
0 .4 7 8 5 9 0 1
0 .4 6 1 9 5 4 5 6
0 .4 5 9 5 9 7 4 7 7
0 .4 9 0 5 1 5 7
0 .4 7 2 6 0 4 6 1
0 .5 9 3 7 2 4 2 6 6
0 .5 3 4 4 0 3 8 3
0 .5 4 9 7 2 4
0 .4 9 8 1 7 7 2
3 . 7 5 - 4 .2 5
0 .8 0 3 7 3 9 4 2
0 .6 8 2 5 0 4 9 0 3
0 .8 3 9 5 4 9
0 .4 7 5 5 5 5 0 9
0 .8 3 6 5 6 2 2 1 6
0 .5 6 0 7 6 6 0 9
0 .7 1 6 9 3 9
0 .8 3 3 3 6 8 7
4 . 2 5 - 4 .7 5
0 .9 1 2 5 1 1 7 6
0 .9 4 9 0 1 3 1 2 9
0 .9 3 3 0 8 8 2
0 .4 5 3 0 5 2 2
0 .8 9 6 1 5 5 6 8
0 79043929
0 .9 8 1 4 3 4
0 .9 6 9 9 2 6 7
4 .7 5 - 5 .2 5
0 .8 6 4 7 0 6 2
0 .8 8 4 2 0 8 2 9 4
0 .9 1 7 5 7 0 8
0 .6 0 7 9 7 4 2 1
0 .9 4 0 3 6 3 1 9 5
0 .8 8 5 9 4 3 5 5
0 .7 4 4 2 4
0 .8 7 1 5 6 5 9
5 . 2 5 - 5 .7 5
0 .8 4 7 6 1 0 1 7
0 .8 6 5 9 1 9 8 1 3
0 .8 6 4 1 0 7 4
0 .9 8 1 4 0 7 6
0 858362588
0 .8 8 2 9 8 5 8 4
0 .5 2 0 6 5 2
0 .6 2 3 9 4 3 1
0 .7 9 6 0 0 5 5
0 890392805
0 .8 3 0 8 5 5 8
0 .8 8 3 0 7 3 0 7
0 .8 5 0 2 1 4 5 3 6
0 .8 4 8 7 3 6 3 3
0 .5 6 1 0 8 5
0 .5 9 4 2 8 6 2
0 .7 1 6 6 3 1 0 9
0 .8 6 0 6 1 8 8 0 4
0 .7 7 3 4 8 0 4
0 .5 1 3 8 2 3 2
0 .5 1 9 2 2 1 6 0 1
0 .6 9 9 2 6 4 4 3
0 .5 2 9 0 3 3
0 .5 8 3 7 0 6 5
7 .5 - 8 .5
0 .5 6 0 0 0 7 9 6
0 .9 3 0 7 2 4 6 4 8
0 .6 7 0 6 3 9 5
0 .4 4 3 2 3 1 9 6
0 .4 1 4 7 7 0 5 1 1
0 .4 4 1 7 2 8 6 8
0 .5 0 3 5 0 3
0 .5 2 0 4 8 3 7
8 . 5 - 9 .5
0 .6 1 3 4 6 6 9 7
0 .8 9 3 7 0 5 9 3 5
0 .6 7 6 4 6 3 9
0 .4 2 4 6 9 2 4
0 .3 9 3 7 5 0 2 7 1
0 .4 1 6 0 9 5 1 3
0 .3 9 7 5 4 1
0 4740013
9 . 5 - 1 0 .5
0 .4 2 9 0 5 2 0 6
0 .3 8 2 5 2 5 0 2 9
0 .3 9 6 7 6 2 8
0 .3 6 5 2 3
0 .4 2 9 9 4 0 8
5 .7 5 - 6 .5
6 . 5 - 7 .5
0 .6 7 5 2 0 2 6 2
0 .8 0 6 1 0 6 7 6 2
0 .6 5 7 9 0 3 9
1 0 . 5 - 1 7 .5
0 .4 2 2 6 5 1 7 8
0 .3 9 9 6 9 6 0 7 5
0 .3 6 7 1 1 5 2
0 .4 1 5 0 9 2 3 5
0 .3 7 4 7 6 7 0 4 4
0 .4 0 1 5 6 3 7 3
0 .3 0 9 8 9 5
0 .2 9 1 1 7 3 4
1 7 .5 - 2 2 .5
0 .3 6 0 5 5 4 3 1
0 .3 7 0 3 1 9 6 5 1
0 .3 7 6 4 1 7
0 42614562
0 .4 0 3 7 1 8 6 3 2
0 .4 1 4 9 3 7 7 6
0 .3 2 6 9 1 4
0 .2 7 7 9 5 9 5
2 2 . 5 - 2 7 .5
0 35327267
0 .3 7 8 6 6 8 7 4
0 .2 6 6 4 0 4 1
0 .3 8 3 1 2 1 5 2
0 .4 1 7 5 8 7 6 5 7
0 .4 1 0 0 5 1 1
0 .2 7 5 9 8 5
0 .2 5 6 0 7 8
2 7 . 5 - 3 2 .5
0 .3 0 0 3 5 6 3 9
0 .2 4 9 3 6 8 2 9 6
0 .2 4 8 0 6 1 4
0 .3 4 8 0 6 8 1
0 .4 6 6 6 0 5 9 9
0 47374919
0 .2 2 5 7 4 7
0 .3 5 6 3 9 3 2
3 2 .5 - 3 7 .5
0 .3 5 5 2 6 2 6 8
0 .1 8 5 6 6 7 8 3 9
0 .2 4 7 1 0 5 2
0 .3 7 8 8 0 5 8 9
0 .4 5 2 7 3 6 9 6 5
0 .4 3 8 6 8 5 2 3
0 .3 0 3 0 2 6
0 .2 4 3 2 0 4
3 7 .5 - 4 2 .5
0 .1 8 0 3 2 2 3 8
0 .2 6 9 6 4 4 6 5 6
0 .3 4 0 8 1 8 2
0 .4 1 9 2 3 1 8 2
0 .4 4 0 1 2 4 8 2 1
0 .4 0 3 0 2 1 1 6
0425662
0 4409878
4 2 .5 - 4 7 .5
019244338
0 .3 0 9 9 3 2 3 2 4
0 .3 0 5 4 8 0 2
0 .4 1 8 5 2 7 2 3
0 .4 6 6 3 4 5 9 4 5
0 .3 7 3 2 7 2 5 2
0 .3 0 0 9 5 3
0 .3 7 6 1 5 0 4
0 .3 3 4 5 5 9 1
0 .3 7 4 5 3 4 3 1
0 .4 1 7 3 7 0 9 5 3
0 .3 2 5 0 4 8 8 7
0 .3 1 5 6 4
0 .3 0 4 3 8 7 4
4 7 .5 - 5 2 .5
0 .2 0 5 3 7 8 4 6
0 .3 3 6 1 2 8 1 4 3
5 2 .5 - 5 7 .5
0 .3 0 0 9 8 9 5 8
0 .2 1 8 0 9 2 3 4 4
0 .2 5 4 8 4 2 1
0 .3 4 8 6 4 0 5 8
0 .1 9 4 5 1 3 0 6 7
0 .2 3 6 1 4 5 8 8
0 .3 4 7 3 9
0 .4 2 3 5 6 7 5
5 7 .5 - 6 2 .5
0 .1 5 0 2 4 6 0 4
0 .1 9 9 7 1 5 5 1 3
0 .2 0 6 2 0 3 5
0 .3 8 1 8 4 4 4 4
0 .2 6 1 5 6 1 1 3 2
0 .2 7 6 6 1 0 8 8
0 .3 6 1 2 9 9
0 .2 8 6 8 3 9 6
6 2 .5 - 6 7 .5
0 .2 8 9 0 0 4 2 7
0 .3 0 6 3 5 4 1 4 3
0 .2 8 8 0 0 6 8
0 .3 8 1 1 8 3 8 9
0 .3 1 6 8 2 0 5 2 6
0 .2 4 3 9 4 7 4
0 .2 9 4 9 4 9
0 .2 7 8 1 2 9 5
6 7 .5 - 7 2 .5
0 .3 7 4 1 6 7 8 1
0 .3 0 3 2 1 7 7 1 2
0 .3 0 1 8 7 2 5
0 .4 1 2 7 1 4 3 5
0 .3 6 4 3 6 5 2 7 5
0 .2 1 2 0 9 8 3 5
0 .2 8 7 6 9 1
0 .3 3 8 5 0 5 6
7 2 .5 - 7 7 .5
0 .4 4 9 9 6 9 6 1
0 .4 6 1 5 7 8 4 6 8
0 .1 6 2 8 4 5 9 2
0 .3 4 1 2 1 2
0 .2 7 3 7 9 5 7
7 7 .5 - 8 2 .5
0 .2 6 4 1 3 3 6 6
0 .1 6 6 1 6 8 2 4 9
0 .1 5 0 9 2 9 3 2
0 .3 0 8 7 7 2
0 .4 0 5 2 1 2 5
8 2 . 5 - 8 7 .5
0 .3 0 9 0 5 1 3 6
0 .1 9 9 7 5 7 2 9 2
018577895
0 .3 1 0 6 7 2
0 .1 8 2 1 9 0 5
8 7 .5 - 9 2 .5
0 .1 6 7 1 6 4 2 8
0 .1 2 6 4 2 4 8 2 6
0 .1 6 4 2 1 7 6 2
0 .2 2 8 5 1 2
0 .2 6 4 1 5 0 8
9 2 .5 - 9 7 .5
0 .4 1 5 9 2 9 0 5
0 .2 0 7 2 9 8 5 7 4
0 .1 2 0 8 8 0 6 3
0 .2 4 1 2 1 2
0 .2 7 8 0 4 4 5
9 7 . 5 - 1 0 2 .5
0 .1 6 8 6 6 1 5 4
0 .2 2 7 7 1 2 0 4 4
0 .1 2 5 8 1 0 1 6
0 .2 5 7 3 2 4
0 .2 6 6 7 8 5 1
1 0 2 . 5 - 1 0 7 .5
014686325
0 .1 6 3 0 0 4 3 7 7
042462536
0 .2 5 6 4 6
0 .2 4 0 4 8 4 7
1 0 7 . 5 - 1 1 2 .5
0 .1 5 2 3 6 7 8 7
0 .1 3 5 6 5 6 3 9 5
0 .1 9 3 7 5 1 9 3
0 .2 5 3 9 5 5
0 .3 0 2 2 2 0 4
1 1 2 . 5 - 1 1 7 .5
016857347
0 .1 6 3 8 2 7 8 5 1
013961284
0 .2 7 8 2 7 5
0 .2 8 3 7 3 8
1 1 7 . 5 - 1 2 2 .5
018420659
0 .1 6 7 0 7 8 4 0 3
0 .3 1 7 9 3 3 2
0 .2 2 3 8 0 3
0 .3 5 6 8 6 0 6
0 .2 5 1 1 4 9 3
1 2 2 . 5 - 1 2 7 .5
0 .1 8 1 9 1 6 6 6
0 .1 8 3 1 5 7 8 0 3
019143719
0 .3 1 8 6 2
1 2 7 . 5 - 1 3 2 .5
014391277
0 .2 4 2 6 2 1 2 4 6
0 .1 9 8 4 2 4 2 7
0 .2 5 1 2 7 6
0 .3 5 9 7 0 7 3
1 3 2 . 5 - 1 3 7 .5
013329987
0148225198
0 .1 6 7 7 7 5 4 5
0 .3 2 6 2 6 6
0 .3 5 2 3 1 4 3
1 3 7 . 5 - 1 4 2 .5
0 .4 2 0 4 2 0 8 2
0 .1 4 9 7 4 2 1 2 3
015534447
0 .4 0 2 8 5 4
0 .3 7 4 4 9 3 3
1 4 2 . 5 - 1 4 7 .5
0 .4 7 6 7 4 4 0 8
0 .4 6 7 6 4 6 1 6 7
010360584
0 .3 4 2 8 1 1
0 .3 1 5 0 0 9 5
1 4 7 . 5 - 1 5 2 .5
1 5 2 . 5 - 1 5 7 .5
1 5 7 . 5 - 1 6 2 .5
1 6 2 . 5 - 1 6 7 .5
0 .1 0 1 3 3 3 9 7
0 .3 2 8 6 4 2
0 .2 8 2 3 3 5 8
0 .3 1 2 6 1 6
0 .1 4 4 9 2 8 2
0 .2 0 2 1 6 2
0 .0 9 9 3 8 0 5
0 .1 0 6 1 3 5
0 .0 9 6 7 4 6 2
0 .1 1 3 3 0 6
0 .0 9 1 9 8 7 5
1 6 7 . 5 - 1 7 2 .5
1 7 2 . 5 - 1 7 7 .5
0 .0 8 4 4 5
0 .1 3 7 4 0 7 7
0 .0 9 7 1 9 3
0 .2 7 4 2 2 0 5
1 7 7 . 5 - 1 8 2 .5
93
Table 2 1continued. N eutron probe count ratios collected from the M ill G ulch w aste rock repository on
May 22,1996.
L o w er W est
1 8 2 . 5 - 1 8 7 .5
1 8 7 . 5 - 1 9 2 .5
1 9 2 . 5 - 1 9 7 .5
1 9 7 .5 - 2 0 2 . 5
2 0 2 . 5 - 2 0 7 .5
2 0 7 . 5 - 2 1 2 .5
2 1 2 .5 -2 1 7 .5
2 1 7 . 5 - 2 2 2 .5
2 2 2 .5 - 2 2 7 .5
2 2 7 . 5 - 2 3 2 .5
2 3 2 .5 - 2 3 7 .5
2 3 7 . 5 - 2 4 2 .5
2 4 2 .5 - 2 4 7 .5
2 4 7 . 5 - 2 5 2 .5
2 5 2 . 5 - 2 5 7 .5
2 5 7 .5 - 2 6 2 .5
2 6 2 .5 - 2 6 7 .5
2 6 7 .5 - 2 7 2 .5
2 7 2 .5 - 2 7 7 .5
2 7 7 . 5 - 2 8 2 .5
2 8 2 . 5 - 2 8 7 .5
2 8 7 .5 - 2 9 2 .5
2 9 2 . 5 - 2 9 7 .5
2 9 7 .5 - 3 0 1 .5
3 0 1 .5 - 3 0 3
303 - 305
305 - 307
307 - 309
3 0 9 -3 1 1
3 1 1 -3 1 3
3 1 3 -3 1 5
L o w e r C e n te r
| L o w er E ast
M id d le W e s t
M id d le C e n te r
T o p W est
l o p E ast
0 .1 6 2 6 3 6
0 .2 8 5 0 1 2 6
0 .1 6 7 9 9 3
0 .3 3 2 6 4 2 2
0 .2 7 6 8 9 2
0 .3 9 9 9 8 6 4
0 .3 0 9 5 9 2
0 .1 9 7 0 6 1 5
0 .2 0 1 9 9 0 2
0 .1 9 2 6 0 0 2
0 .1 3 6 5 1 5 4
0 .1 5 2 0 6 6 2
0 .1 6 0 3 0 9
0 .1 2 5 8 9 3 3
01384699
0 .1 3 5 3 6 8 2
0 .1 3 6 5 5 7 9
01483697
0 .1 5 7 8 8 7 1
0 .1 5 8 2 2 7
01728006
0 .1 9 5 2 3 4 5
0 .1 7 7 8 5 6 7
0 .1 5 1 1 3 1 5
01451831
0 .1 6 5 1 9 5 1
0 .1 6 8 3 8 1 8
0 .1 7 4 0 7 5 2
0 .2 0 6 1 1 1 5
0 .3 5 6 5 2 0 7
0 .3 7 8 8 2 7 1
0 .4 1 0 3 1 1 1
0 .4 8 7 0 4 5 3
0 .4 1 0 3 1 1 1
94
Table 22. Neutron probe count ratios collected from the Mill Gulch waste
rock repository on June 25, 1996.
D e p t h (f t)
0 .2 5 - 0 .7 5
L o w e r W est
0 .1 0 0 6 4 4 0 2
L o w e r C e n te
L o w e r E ast
M id d le W e s
0 .0 1 3 4 3 3 4
0 .0 5 1 3 1 1
0 .0 1 1 3 7 4 3
M id d le C e n te
M id d le E a s t
T o p W est
T o p E ast
0 .7 5 - 1 .2 5
0 .3 2 8 6 4 1 5 9
0 .0 3 4 1 2 0 8
0 .2 6 6 7 1 8
0 0712296
0 1 9 7 9 9 4 0 4
0 .0 6 0 5 1 6
0 48359
0 .3 7 0 0 1
1 . 2 5 - 1 .7 5
0 .4 0 9 7 8 0 6 1
0 .2 0 9 4 7 1 4
0 .3 8 3 2 3 3
0 .3 2 0 5 5 5
0 .4 4 4 5 4 9 3 2
0 .3 9 3 0 0 9
0 5 2 2 3 9
0 .4 5 7 7 1
1 .7 5 - 2 .2 5
0 49909065
0 4553026
0 .4 3 4 1 4 4
0 4910822
0 .6 2 4 5 4 7 9 1
0 .5 5 7 6 5 1
0 5 5 3 4 2
0 4 5 9 6 3
2 .2 5 - 2 .7 5
0 .5 3 7 9 2 4 9 1
0 4920206
0 .4 6 1 9 7 4
0 .5 0 5 5 2 7 1
0 .5 2 8 8 3 6 8 2
0 .5 6 3 5 0 3
0 58827
0 4 6 0 7 6
2 .7 5 - 3 .2 5
0 .5 4 0 8 6 8 2 4
0 .4 8 6 4 2 3 3
0 .4 7 9 9 9 5
0 .5 0 0 2 5 0 8
0 .6 1 7 9 3 1 9 3
0 .5 3 0 9 0 4
0 .5 7 7 7 4
0 46869
3 2 5 - 3 .7 5
0 55308082
0 4964984
0 .5 3 6 5 4 3
0 .4 9 6 2 2 8 8
0 .6 3 7 3 3 8 7 9
0 .5 4 8 9 3 7
0 .5 6 1 0 2
0 .4 7 0 5 7
3 .7 5 - 4 .2 5
0 .8 0 0 1 0 0 1 6
0 .6 5 2 1 4 6 7
0 .8 5 3 9 5 1
0 .4 9 7 6 5 6
0 81058909
0 .5 8 4 2 2 4
0 .7 0 9 4 4
0 .7 7 8 5
4 .2 5 - 4 .7 5
0 91686655
0 .9 4 1 8 1 5 5
0 .9 4 5 1 2 1
0 .4 8 9 2 2 2 6
0 .9 2 0 6 3 4 7 8
0 .7 3 5 9 9 2
0 .9 7 0 2 7
0 .9 8 7 4 7
4 .7 5 - 5 .2 5
0 .8 6 0 9 8 7 3 7
0 .8 8 6 5 5 9 4
0 .9 1 9 9 9 8
0 .6 8 2 6 2 8 1
0 95481731
0 .8 9 1 7 4 7
0 .7 8 9 0 2
0 .9 1 8 3 8
5 .2 5 - 5 .7 5
0 .8 5 6 9 0 1 8 7
0 8809174
0 .8 8 3 8 6 7
0 .9 8 0 2 1 8 3
0 .8 8 5 4 8 1 9 1
0 .8 9 7 4 6 9
0 .5 3 7 3
0 61283
5 .7 5 - 6 .5
0 82597503
0 .8 9 4 4 8 5 1
0 .8 5 5 2 3 8
0 .9 2 2 2 2 2 6
0 .8 6 1 8 8 4 9 3
0 .8 6 4 4 3 7
0 5 6 5 2 8
0 .5 7 3 5 9
6 .5 - 7 .5
0 .7 2 3 4 4 2 0 2
0 .8 6 6 6 3 3 2
0 .8 1 0 4 0 8
0 .5 3 1 1 3
0 .5 5 8 7 4 1 0 2
0 626403
0 .5 5 4 4
0 .5 5 6 6 4
7 .5 - 8 .5
0 .5 7 5 4 4 1 2 8
0 .9 3 5 1 4 3 6
0 .7 2 9 7 5 8
0 .4 3 7 8 0 0 6
0 42655387
0 446112
0 .5 2 1 0 6
0 48793
8 .5 - 9 .5
0 .6 3 0 0 9 0 4 1
0 .9 1 0 2 9 1 8
0 .7 0 5 8 3 3
0 .4 1 7 9 4 9 7
0 .3 9 8 3 2 5 7 2
0 418108
0 .4 1 5 7
0 .4 3 5 3 8
9 .5 -1 0 .5
0 .6 7 5 8 6 5 6 4
0 .8 3 2 7 3 6 3
0 .6 8 0 6 6 6
0 .4 1 3 6 2 4 9
0 .3 8 8 6 6 6 4
0 .4 0 5 1 0 3
0 .3 6 3 5 3
0 .4 0 9 6 6
0 .4 2 2 8 7 1 8
0 .4 0 5 3 7 5 2
0 .3 7 2 6 2 4
0 .4 0 8 8 2 4 3
0 .3 7 8 9 6 2 9 7
0 .4 0 5 1 0 3
0 .3 1 1 1 5
0 28515
1 0 .5 - 1 7 .5
1 7 .5 - 2 2 .5
0 .3 6 2 2 4 8 1 7
0 .3 6 6 2 8 4
0 .3 7 3 2 0 1
0 .4 2 1 3 2 3
0 4056915
0 .4 1 4 7 7
0 3 2 3 1 4
0 .2 9 4 3 3
2 2 .5 - 2 7 .5
0 .3 4 9 8 1 5 9 3
0 .3 7 3 6 7 2 3
0 .2 6 7 1 6 2
0 .3 7 6 9 0 7 2
0 41424816
0 .4 1 0 7 8 2
0 .2 8 2 0 2
0 .2 3 8 2 3
2 7 .5 - 3 2 .5
0 .2 9 9 3 4 0 1 7
0 2531748
0 .2 4 4 6 5 8
0 .3 3 7 1 1 9
0 .4 7 0 8 8 0 8 9
0 .4 7 7 6 7 1
0 .2 2 0 2 2
0 .3 4 7 8 4
3 2 .5 - 3 7 .5
0 34318248
0 .1 9 1 9 6 3 2
0 .2 4 7 8 1
0 .3 7 5 9 9 9
0 43290521
0 .4 5 2 0 5 1
0 .2 9 7 3 6
0 .2 5 2 0 9
3 7 .5 - 4 2 .5
0 .1 7 6 2 4 7 8 4
0 .2 7 3 1 0 1
0 .3 4 9 3 2 1
0 .4 1 6 5 2 2 5
0 4 4 5 9 1 6 6 2
0 424524
0 .4 2 3 0 4
0 .4 1 3 4 2
4 2 .5 - 4 7 .5
0 1 8 4 3 3 0 9 9
0 .3 0 4 0 4 2 6
0 .3 1 1 3 2 7
0 .4 1 2 7 5 9 9
0 46364743
0 .3 6 9 9 4 7
0 .3 0 4 6 6
0 .3 7 2 0 5
4 7 .5 - 5 2 .5
0 .1 9 8 7 8 4 0 1
0 3456413
0 .3 3 2 5 4 3
0 .3 7 0 3 7 6 8
0 42284893
0 .3 2 6 5 5 3
0 .3 1 8 6 7
0 .3 1 1 3 2
5 2 .5 - 5 7 .5
0 .2 9 4 2 8 8 2
0 .2 1 9 1 8 8 3
0 .2 5 5 9 3 2
0 .3 3 9 4 1 1 1
0 .1 9 6 7 1 4 9 5
0 .2 4 3 8 4 2
0 .3 5 2 7 4
0 40482
5 7 .5 - 6 2 .5
0 .1 4 0 1 8 1 1 7
0 .2 0 0 5 1 5 8
0 .2 1 1 3 2 4
0 .3 7 8 5 5 0 7
0 .2 5 1 7 5 9 8 5
0 .2 8 8 4 9 2
0 .3 5 9 4 5
0 .3 0 1 8 8
6 2 .5 - 6 7 .5
0 .2 8 4 0 9 6 4
0 .3 0 6 8 1 8 8
0 .2 9 0 6 8 7
0 .3 8 0 9 2 9 3
0 .3 1 9 1 9 8 6 7
0 .2 7 3 0 1 7
0 .2 8 6 4 8
0 .2 7 9 1 3
6 7 .5 - 7 2 .5
0 36839839
0 .3 1 3 6 2 5
0 .3 0 4 0 0 3
0 .4 1 3 4 5 1 9
0 .3 6 8 2 4 5 0 9
0 .2 2 6 2 8 6
0 .2 8 2 8 7
0 .3 4 2 4 6
0 .4 3 3 8 6 5
0 45919267
0 .1 6 3 3 4 2
0 .3 5 0 8 1
0 .2 6 4 8 2
0 .4 0 2 5 7
7 2 .5 - 7 7 .5
7 7 .5 - 8 2 .5
0 .2 7 2 2 9 0 1
0 .1 6 0 3 2 7 0 9
0 .1 5 4 7 1 5
0 .3 0 3 9 7
8 2 .5 - 8 7 .5
0 .3 1 7 0 5 1 9
0 .1 9 4 0 2 4 4 5
0 .1 8 1 8 0 9
0 .3 0 8 8 7
0 .1 8 4 8
8 7 .5 - 9 2 .5
0 .1 6 1 7 9 1 2
0 .1 2 7 9 5 2 9 3
0 .1 6 3 1 6 8
0 .2 2 4 9 5
0 25292
9 2 .5 - 9 7 .5
0 .4 0 4 4 9 9 5
0 20853549
0 .1 2 6 4 5 1
0 .2 4 2 0 1
0 .2 7 5 2 9
9 7 . 5 - 1 0 2 .5
0 .1 6 8 6 6 7 6
0 .2 3 7 1 1 6 4 9
0 .1 2 2 9 4
0 .2 6 0 9 2
0 .2 5 1 3 3
0 .2 3 0 9 2
1 0 2 . 5 - 1 0 7 .5
0 .1 4 2 4 1 6
0 .1 7 1 4 8 6 0 4
0 4 1 8 3 2 5
0 .2 4 5 6 6
1 0 7 .5 -1 1 2 .5
0 .1 4 6 0 9 2 1
0 .1 3 3 7 3 0 8 8
0 .1 9 2 8 2
0 .2 6 3 5 8
0 .2 9 6
1 1 2 .5 - 1 1 7 .5
0 .1 6 6 1 5 9 2
0 1 6 4 1 2 0 2 5
0 .1 4 6 5 6 5
0 .2 7 3 3 8
0 .2 7 6 0 5
1 1 7 . 5 - 1 2 2 .5
0 .1 7 5 9 7 6 5
0 1 6 0 0 1 8 3 5
0 .3 0 8 6 5
0 .2 2 7 3 6
0 .3 4 9 2 2
1 2 2 . 5 - 1 2 7 .5
0 .1 6 6 6 3 5
0 .1 7 7 2 6 3 9 9
0 .1 8 4 0 2
0 .3 1 0 8 9
0 .2 4 6 7 8
1 2 7 . 5 - 1 3 2 .5
0 .1 5 1 2 3 8 6
0 .2 3 4 9 5 5 2 8
0 .1 9 8 9 3 2
0 .2 4 4 5 9
0 34526
1 3 2 . 5 - 1 3 7 .5
0 .1 3 1 8 2 0 2
0 .1 4 6 1 6 8 9 1
0 .1 6 7 9 3 7
0 .3 2 4 4 7
0 .3 5 0 4 7
1 3 7 . 5 - 1 4 2 .5
0 .4 0 3 9 3 7 3
0 .1 4 8 6 8 2 9 8
0 .1 6 7 0 2 6
0 .3 9 7 5 2
0 .3 6 4 4 6
1 4 2 . 5 - 1 4 7 .5
0 .4 7 7 3 7 2 6
0 .4 6 3 2 9 4 5 8
0 .1 0 5 8 1 7
0 .3 9 2 6 6
0 .2 9 8 9 6
1 4 7 . 5 - 1 5 2 .5
0 .3 1 9 0 1
0 .2 8 0 8 9
1 5 2 . 5 - 1 5 7 .5
0 .1 1 3 1 8 6
0 .3 1 8 4 1
0 .1 4 3 3 4
1 5 7 . 5 - 1 6 2 .5
0 .2 0 0 7 6
0 0978
1 6 2 . 5 - 1 6 7 .5
0 .1 0 3 7 7
0 .0 9 0 4 6
1 6 7 . 5 - 1 7 2 .5
0 .1 1 3 5 3
0 .0 9 1 5
95
Table 22 continued.
Neutron probe count ratios collected from the Mill Gulch
waste rock repository on June 25, 1996.
D e p t h (f t)
1 7 2 . 5 - 1 7 7 .5
1 7 7 . 5 - 1 8 2 .5
1 8 2 . 5 - 1 8 7 .5
1 8 7 . 5 - 1 9 2 .5
1 9 2 . 5 - 1 9 7 .5
1 9 7 .5 - 2 0 2 .5
2 0 2 .5 - 2 0 7 .5
2 0 7 .5 - 2 1 2 .5
2 1 2 .5 - 2 1 7 .5
2 1 7 .5 -2 2 2 .5
2 2 2 .5 - 2 2 7 .5
2 2 7 .5 - 2 3 2 .5
2 3 2 .5 - 2 3 7 .5
2 3 7 .5 - 2 4 2 .5
2 4 2 .5 - 2 4 7 .5
2 4 7 .5 - 2 5 2 .5
2 5 2 .5 - 2 5 7 .5
2 5 7 .5 - 2 6 2 .5
2 6 2 .5 - 2 6 7 .5
2 6 7 .5 - 2 7 2 .5
2 7 2 .5 - 2 7 7 .5
2 7 7 .5 - 2 8 2 .5
2 8 2 .5 - 2 8 7 .5
2 8 7 .5 - 2 9 2 .5
2 9 2 .5 - 2 9 7 .5
2 9 7 .5 -3 0 1 .5
3 0 1 .5 - 3 0 3
303 - 305
305 - 307
307 - 309
L o w er W est
L o w e r C e n te
L o w er E ast
M id d le W e s
M id d le C e n te
M id d le E a st
T o p W est
T o p E ast
0 .0 8 2 3 3
0 .1 3 5 8 3
0 .0 9 1 8 7
0 .2 7 2 5
0 .1 4 9 7 5
0 .2 7 1 7
0 1623
0 .3 2 9 3 9
0 .2 6 5 2 1
0 40031
0 30389
0 1 8 7 2 6
0 .1 9 0 3 9
0 1 8 6 3 8
0 .1 3 0 5 7
0 .1 5 4 6 2
0 .1 5 2 5 7
0 .1 2 7 4 4
0 .1 3 3 9 1
0 .1 2 8 7 3
0 .1 3 3 4 1
0 .1 4 4 7 6
0 .1 5 8 4 1
0 .1 5 8 8 7
0 .1 7 2 3 6
0 .1 9 0 1 4
0 .1 7 6 1 1
0 .1 4 6 4 8
0 .1 4 0 4 6
0 1 6 4 0 9
0 1 6 0 9 2
0 .1 7 4 9 4
0 1 9 9 1 1
0 .3 2 6 6
0 .3 6 1 2 8
0 .4 0 7 4 5
3 0 9 -3 1 1
0 4542
3 1 1 -3 1 3
0 .4 0 3 1 1
3 1 3 -3 1 5
96
T a b le 2 3 .
N e u tr o n p ro b e c o u n t ratios c o lle c te d from th e M ill G u lch w a ste
rock re p o sito r y o n Ju ly 2 3 , 19 9 6 .
Depth (ft)
0.25 - 0.75
0.75 - 1.25
1.25-1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5-10.5
10.5-17.5
17.5-22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5- 107.5
107.5- 112.5
112.5- 117.5
117.5-122.5
122.5 - 127.5
Low West
0.056607
0.188452
0.322888
0.430517
0.475597
0.476312
0.468493
0.714758
0.951462
0.885964
0.87895
0.852098
0.756085
0.614277
0.662261
0.713418
0.441061
0.370336
0.358764
0.307161
0.351482
0.17487
0.19149
0.201408
0.303497
0.148331
0.29063
0.36904
Low Middle Lower East
0.0343244 0.025101
0.1151698 0.112498
0.3134066 0.276247
0.4516191 0.384599
0.4494847 0.422797
0.4465662 0.442878
0.4538842 0.474047
0.6127 0.773825
0.9149991 0.961322
0.8973577 0.924914
0.8697413 0.878902
0.881328 0.879207
0.8717015 0.824682
0.9517628 0.760335
0.9030639 0.747501
0.8364188 0.726023
0.4150296 0.373729
0.3669841
0.385166
0.3642834 0.274807
0.2523805 0.254376
0.1821199 0.245995
0.273463 0.351115
0.3046512 0.305322
0.3404131
0.344305
0.2172284 0.257083
0.200284 0.215393
0.3088764 0.288951
0.3039543 0.292924
Middle West
0.00979033
0.03187447
0.2233001
0.46130806
0.50020117
0.49148375
0.513702
0.54977871
0.71853905
0.90276722
0.89521212
0.86704815
0.65885824
0.44731548
0.42871832
0.40569538
0.413474
0.42415843
0.43122178
0.46917609
0.45495999
0.42509723
0.36885869
0.3263892
0.23733739
0.28785373
0.29290536
0.23005052
0.1702803
0.15601949
0.19120211
0.16513926
0.13192364
0.12459207
0.43354643
0.20041128
0.14605034
0.30908847
0.18516697
Middle Center Middle East
0.093857027
0.32688738
0.616432387
0.464622785
0.500788678
0.547325031
0.782141892
0.915345668
0.970858134
0.886674394
0.848373406
0.592467037
0.430984148
0.396081883
0.381876966
0.384796382
0.402879328
0.407585251
0.46636572
0.439175941
0.443533277
0.468457241
0.435123618
0.190241309
0.250982579
0.318521294
0.367672049
0.470461616
0.170415428
0.190328456
0.123181901
0.197605208
0.238651317
0.169936121
0.136951085
0.162441503
0.161265022
0.171461189
0.0318441
0.1972531
04028002
0.4516623
0.4563035
0.4486111
0.4633513
0.4364063
0.5389865
0.9646921
0.9377471
0.5382989
0.4344724
0.4274246
0.4218809
0.406496
0.4264362
0.3757692
0.3465895
0.3763279
0 4134149
04052927
0.3691941
0.3353732
0.3810981
0.3878021
0.4064531
0.441907
0.275037
0.3156909
0.1565562
0.4008234
0.1806649
0.1394094
0.1472307
0.1611545
0.1712105
0.128279
Top West
0.29915
0.512746
0.552511
0.593793
0.574736
0.566971
0.68323
0.978096
0.82948
0.565498
0.580627
0.555546
0.526492
0.428754
0.373815
0.321956
0.336728
0.288305
0.218996
0.302542
0 434243
0.315306
0.323384
0.358418
0.360783
0.288171
0.284021
0.357749
0.303301
0.322357
0.237606
0.246175
0.267999
0.253004
0.267062
0.282236
0.23417
0.325392
Top East
0.289094
0.49551
0.533938
0.573833
0.555417
0.547912
0.660263
0.945217
0.801598
0.546489
0.56111
0.536871
0.508794
0.414341
0.361249
0.311133
0.325409
0.278614
0.211635
0.292372
0 419646
0.304707
0.312513
0.34637
0.348656
0.278485
0.274474
0.345723
0.293105
0.311522
0.229619
0.2379
0.25899
0.244499
0.258085
0.272748
0.226298
0.314454
97
T a b le 2 3 co n tin u e d .
N e u tr o n p rob e co u n t ratios c o lle c te d front th e M ill G u lc h w a ste rock
re p o sito r y on July 2 3 , 1 9 9 6 .
Depth (ft)
127.5- 132.5
132.5 - 137.5
137.5- 142.5
142.5 - 147.5
147.5- 152.5
152.5- 157.5
157.5- 162.5
162.5- 167.5
167.5- 172.5
172.5- 177.5
177.5- 182.5
182.5- 187.5
187.5 - 192.5
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207.5-212.5
212.5-217.5
217.5-222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5 - 301.5
301.5-303
303 - 305
305 - 307
307 - 309
309-311
311 -313
313-315
Low W est
Low Middle Lower East
M iddle West
M iddle Center M iddle East
0.18936922 0.232463899
0.17484018 0.147626559
0.17108498 0.15359611
0.1097501 0.463359158
0.1506257
0.1283219
0.398159
0.4766305
Top West
0.253405
0.337353
0.408671
0.363238
0.334274
0.323161
0.204268
0103852
0.116973
0.081002
0.093052
0.159327
0.169011
0.273355
0.322581
Top East
0.244887
0.326013
0.394933
0.351028
0.323037
0.312298
0197402
0.100361
0 113041
0.078279
0.089924
0.153971
0.16333
0.264166
0 311737
0.196237
0.189251
0,134045
0.15561
0.154187
0.125808
0.136029
0.12736
0.136892
0.142499
0.155825
0161475
0.17174
0.189078
0.176959
0 14776
0.141162
0.15919
0.164839
0.174371
0.196151
0.340677
0.365088
0.410805
0.449103
0.450527
98
T a b le 2 4 . N e u tr o n p ro b e c o u n t r a tio s c o lle c te d fro m th e M ill G u lc h w a s te
ro c k r e p o s ito r y o n A u g u s t 16, 1 9 9 6 .
Depth (ft)
Lower West Lower Center Lower East
0.25 - 0.75
0.0384195 0.03397833 0.023206
0.75- 1.25
0.141694 0.10712114 0.087022
1.25-1.75
0.2933013 0.29856218 0.228705
1.75-2.25
0.4048588 0.44144998 0.366897
2.25 - 2.75
0.4589193 0.44668085 0.418249
2.75 - 3.25
0.4666737
0.4431936
0.43307
325 - 3.75
0.4546896 0.44766444 0.477986
3.75 - 4.25
0.7362271 0.62430702 0.813927
4.25 - 4.75
0.9344049 0.96543152 0.975371
4.75 - 5.25
0.859152
0.909412 0.932313
5.25 - 5.75
0.8325403 0.88164813 0.892564
5.75 - 6.5
0.742131 0.90163275 0.879873
6.5 - 7.5
0.616827
0.882587
0.84724
7.5 - 8.5
0.6716806 0.96721986 0.793667
8.5 - 9.5
0.7194406 0.91593941 0.788546
9.5-10.5
0.4279458 0.86707321 0.745035
10.5-17.5
0.3648532 0.42173361 0.382353
17.5-22.5
0.3469652 0.37376158
0.3848
22.5 - 27.5
0.2984121 0.38373154 0.270539
27.5 - 32.5
0.3482429 0.26096248 0.256669
32.5 - 37.5
0.354279 0.18384062 0.254902
37.5 - 42.5
0.193155 0.27316785 0.358648
42.5 - 47.5
0.1960188 0.30777209 0.315681
47.5 - 52.5
0.2985443 0.35797954 0.353255
52.5 - 57.5
0.3026858 0.22304982 0.266369
57.5 - 62.5
0.1534137 0.20892199 0.215833
62.5 - 67.5
0.2866483
0.3147913 0.295512
67.5 - 72.5
0.3740615 0.31349476 0.293518
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5- 107.5
107.5-112.5
Middle West
0.01034963
0.02948339
0.16098452
0.38506697
0.4279005
0.44799095
0.43642373
0.4530788
0.43520612
0.51426335
0.98560619
0.91820317
0.54118107
0.44351192
0.43216212
0.42798748
0.41559402
0.43398852
0.38658897
0.35571404
0.38241433
0.42224735
0.40785354
0.38254479
0.33979823
0.3803705
0.38119673
0.3981562
0.44342494
0.2846582
0.31283702
0.16311532
0 41141938
0.17046443
0.14646025
014950426
Middle Center
Middle East Top West
0.079324036
0.295734032
0.545977263
0.449166878
0.491502248
0.529718027
0.74941493
0.923577207
0.976912761
0.901883617
0.865990586
0.600759057
0.429576909
0.393552402
0.390134018
0.382815171
0.398986756
0.416297803
0 470509865
0.439393807
0.445879971
0.480195286
0.42918248
0.189545004
0.251908598
0.325885931
0.365591775
0.464505781
0.167369334
0.191298022
0.122623566
0.198967473
0.238410364
0.176704152
0.143484473
0.0271047
0.1738592
0.4224443
0.4655111
0.4694022
0.502255
0.5393969
0.7023788
0.902989
0.8983463
0.8778299
0.6440573
0.4504775
0.4241245
0.4061726
0.4120534
0.4300053
0.4172267
0.4743987
0.4587018
0.4213831
0.3677485
0.3310488
0.2308985
0.285948
0.2932879
0.2261231
0.1701008
0.1558631
0.1867262
0.1627609
0.1345065
0.1282278
0.4294305
0.2028652
0.267774
0.49473
0.543919
0.577133
0.574972
0.558636
0.682532
0.983249
0.843467
0.548645
0.573532
0.55454
0.524658
0 426279
0.37988
0.328575
0.338161
0.290456
0.229296
0.312058
0.433254
0.320699
0.322139
0.357918
0.372364
0.289826
0.284741
0.352022
0.307378
0.322679
0.246937
0.245677
0.264759
0.259359
0.274165
Top East
0.24818
0.43556
0.46284
0.45126
0.47084
0.47014
0.75015
1.03644
0.94801
0.67392
0.58647
0.5736
0.50056
0.43379
0 40978
0.2996
0.29987
0.24955
0.36181
0.26312
0.42411
0.39599
0.3141
0.43211
0.31286
0.29133
0.35438
0.28032
0.42221
0.18486
0.26639
0.28616
0.26498
0.24141
0.31552
99
I a b le 2 4 c o n tin u e d .
N e u tr o n p r o b e c o u n t ra tio s c o lle c t e d fro m th e M ill G u lc h w a s te ro ck
r e p o s ito r y o n A u g u s t 16, 1 9 9 6 .
Depth (ft)
L ow er W est L ow er C enter L ow er East M iddle W est M iddle Center M iddle East I op West
112.5-117.5
0.16341973 0.166887255
0.146047 0.284021
117.5-122.5
0.17463907 0.159699883 0.1752299 0.237667
122.5- 127.5
0.12932684 0.179333678
0.181774 0.331815
127.5- 132.5
0.14959123 0.223991796 0.1821277 0.262284
132.5- 137.5
0.12941381 0.151329225 0.1775292
0.32934
137.5 - 142.5
0.40602714 0.150145939 0 1739034 0412057
142.5- 147.5
0.4822143 0.473095566 0.1089052 0.357558
147.5- 152.5
0.1159356
0.33141
152.5 - 157.5
0.320294
157.5- 162.5
0.204319
162.5 - 167.5
0.109135
167.5- 172.5
0.11242
172.5- 177.5
0.082267
177.5- 182.5
0.094689
182.5- 187.5
0.159405
187.5- 192.5
0.169395
192.5- 197.5
0.27187
197.5 - 202.5
0.313994
202.5 - 207.5
207.5-212.5
212.5-217.5
217.5 -222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5-301.5
301.5-303
303 - 305
305 - 307
307 - 309
309 - 311
311-313
313-315
ITop East
0.28435
0.36247
0.24893
0.36278
0.36389
0.38586
0.31645
0.28572
0.15643
0.10161
0.09599
0.09405
0.14962
0.28346
0.29549
0.33634
0.41434
0.19211
0.20273
0.19543
0.13883
0.16638
0.15727
0.13211
0.13769
0.13366
0.13556
014905
0.16178
0.16452
0.17651
0.19861
0.18278
0.14905
0.14414
0.16041
0.17018
0.18163
0.21581
0.3485
0.38109
0.42358
0.46576
0.45935
100
T a b le 2 5 .
N eu tro n p rob e co u n ts c o lle c te d from th e M ill G u lch w a ste rock
rep o sito ry on S ep te m b er 2 4 , 1996.
Depth (ft)
0.25 - 0.75
0.75 - 1.25
1.25-1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5-10.5
10.5-17.5
17.5-22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5- 102.5
102.5 - 107.5
107.5-112.5
Lower West
0.1052542
0.3422467
0.3964091
0.4403361
0.4558171
0.478463
0.4602525
0.7172893
0.9076254
0.8404128
0.8297083
0.8082992
0.7401058
0.6065336
0.6658137
0.7267997
0.4233623
0.3555954
0.331798
0.2871887
0.348985
0.1751962
0.1801006
0.2024906
0.291752
0.1393296
0.2735415
0.3616513
Lower Center
0.13663104
0.31694921
0.46167369
0.4647196
0.46585094
0.45527727
0.46567689
0 64042538
0.94662687
0.89488982
0.86547499
0.89040798
0.85133324
0.95036899
I0 .90059004
0.8645177
0.40005918
0.36472656
0.369513
0.2493299
0.18414732
0.27060779
0.30237233
0.33535524
0.21760887
0.20320604
0.30328611
0.29863021
Lower East
0.0525333
0.2579743
0.3794848
0.4109259
0.4254843
0.4440332
0.4860423
0.7794919
0.9556405
0.900257
0.8741657
0.8502232
0.8231234
0.7902353
0.7766416
0.765328
0.375319
0.3811073
0.2653412
0.2450383
0.2498619
0.3381774
0.3055524
0.3475615
0.259509
0.2083352
0.2774879
0.2857757
Middle West
0.01072712
0.03950509
0.27127976
0.4286539
0.46100757
0 47022686
0.46286005
0.45954283
0.45777651
0.5419133
0.96806852
0.93898898
0.5392423
0.43373743
0.41189547
0.42585365
0.41215395
0.41646203
0.37536296
0.35558887
0.37945563
0.4134033
0.40190072
0.37419977
0.33788267
0.3862624
0.3875979
0.40310699
0.43408208
0.27726799
0.31272348
0.16069136
0.41129234
0.17335711
0.14707783
0.15147207
Middle Center
0.146626179
0.399189663
0.647796091
0.484911568
0.519965935
0.60108561
0.766507811
0.908273691
0.967629551
0.910037162
0.859756727
0.628096827
0.424308375
0.39131856
0.385339963
0.379103296
0.401211204
0.401942399
0.462502581
0.427964352
0.441469961
0.468395155
0.420050237
0.190110798
0.254197922
0.32271523
0.38065171
0.453513179
0.162884523
0.186239763
0.122582754
0.194368935
0.240692313
0.172261028
0.136819558
Middle East
0.04007288
0.31291879
0.4799548
0.51704959
0.49970657
0.50750217
0.54814438
0.69941402
0.9026689
0.88799741
0.86999746
0.65237766
0.45293298
0.41785279
0.40208642
0.40725429
0.42258271
0.40786742
0.46865557
044172134
0.42118125
0.3614004
0.32224723
0.23632048
0.28475829
0.29391155
0.23487523
0.16493383
0.15967837
0.18937171
0.16270025
0.12840838
0.12691934
0.42337103
0.1972549
Top West
0.49965
0.526678
0.546397
0.576885
0.569533
0.550981
0.691354
0.958044
0.715787
0.526678
0.54363
0.536365
0.511758
0.394392
0.360748
0.310324
0.318281
0.28641
0.22284
0.294453
0.417268
0.311319
0.309762
0.337698
0.364294
0.277156
0.283296
0.344704
0.295145
0.306951
0.226559
0.234949
0.25069
0.249349
0.257825
Top East
0.093646
0 458497
0.460401
0.45508
0.461179
0475367
0.724642
0.984126
0.924694
0.632164
0.55556
0.5537
0496345
0.428219
0 401185
0.283144
0.300619
0.246031
0.346468
0.255461
0.417406
0.372075
0.321683
0.406938
0.308102
0.285912
0.341451
0.264631
0.421774
0.185562
0.258705
0.287945
0.259527
0.234482
0.303127
101
T a b le 2 5 co n tin u ed .
N eu tro n p robe co u n ts c o lle c te d from the M ill G u lch w a ste rock
rep o sito ry on S ep tem b er 2 4 . 1996.
Depth (ft)
Lower West Lower Center Lower East
112.5- 117.5
117.5- 122.5
122.5- 127.5
127.5- 132.5
132.5- 137.5
137.5- 142.5
142.5- 147.5
147.5- 152.5
152.5- 157.5
157.5- 162.5
162.5- 167.5
167.5- 172.5
172.5- 177.5
177.5-182.5
182.5- 187.5
187.5- 192.5
192.5- 197.5
197.5 - 202.5
202.5 - 207.5
207.5-212.5
212.5-217.5
217.5-222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5-301.5
301.5-303
303 - 305
305 - 307
307 - 309
309 - 311
311 -313
313-315
M iddle West M iddle Center
M iddle East
0.16607646
0.1680151
0.12747607
0.14419142
0.12601132
0.39798037
0.47836913
0.1447441
0.16484623
0.17557613
0.16734258
0.17032067
0.17207249
0.10567852
0.12280256
0.165379189
0.159701672
0.175099787
0.20486374
0.145464868
0.149077834
0.456825064
Top West
0.269847
0.223446
0.311881
0.244808
0.322433
0.400317
0.350931
0.323038
0.316984
0.208483
0.105128
0.111917
0.07797
0.092068
0.155162
0.161043
0262452
0.3092
t op East
0.268134
0.346122
0.243047
0.34902
0 342705
0.367403
0.307323
0.278083
0.146979
0.100177
0.098836
0.09317
0.140534
0.273065
0.284398
0.318483
0.403953
0.185475
0.198322
0.192093
0.13184
0.155673
0.258359
0.126692
0.13889
0.128163
0.13357
0.142004
0.155673
0.156322
0.169947
0.187681
0.174575
0.146287
0.142307
0.158182
0.161728
0.172975
0.20109
0.327869
0.3748
0.401704
0.445824
0.439336
102
T a b le 26.
N e u tr o n p r o b e c o u n t r a tio s c o lle c te d f ro m th e M ill G u lc h w a s te
r o c k r e p o s ito r y o n O c to b e r 2 8 , 1 9 9 7 .
Depth (ft)
0.25 - 0.75
0.75 - 1.25
1.25 - 1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 - 10.5
10.5 - 17.5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 -107.5
107.5 - 112.5
L o w er W est
0.06808869
0.28497038
0.36961151
0.4308108
0.46042625
0.48042338
0.45801049
0.70924968
0.92724979
0.85549273
0.85339012
0.83424297
0.73376519
0.6352558
0.70186819
0.74553084
0.4327792
0.35663798
0.34048816
0.34880912
0.29588605
0.16579282
0.17456114
0.19326092
0.29906233
0.15067194
0.28957823
0.38271925
L o w e r C e n te r
L o w e r E ast
M id d le W e s t
0.064837971
0.297607597
0.446826743
0.460161592
0.455483465
0.454477886
0.451286266
0.597051468
0.947517532
0.891773491
0.868514017
0.891773491
0.867289834
0.935231983
0.920060859
0.86387961
0.409532887
0.370009269
0.362358126
0.254892359
0.17938651
0.268358371
0.295771323
0.337874469
0.214232
0.196831115
0.303378745
0.300055963
0.03081332
0.19256165
0.32397138
0.3943155
0.41481456
0.42793395
0.46388282
0.80572075
0.96345558
0.91123693
0.88590442
0.85824148
0.82186106
0.79346447
0.81499927
0.77499374
0.37114078
0.37355751
0.26994019
0.25133999
0.25021794
0.35141853
0.3113267
0.34032747
0.25578505
0.2038685
0.28728886
0.29471168
0.010407901
0.033083839
0.239780327
0.41658178
0.448115506
0.452898711
0.452367244
0.454271668
0.444085212
0.514681784
0.968820585
0.955135303
0.544399663
0.449532752
0.422959387
0.42242792
0.421852164
0.435005979
0.396386022
0.358740423
0.388989769
0.415961734
0.416803224
0.383010762
0.341467736
0.396297445
0.390407015
0.427476859
0.440364941
0.29359139
0.31662164
0.164577705
0.418796227
0.17857301
0.103326099
0.110190885
M id d le C e n te r
0.115093051
0.362264347
0.622444658
0.458081581
0.484791121
0.53069004
0.725738834
0.914650485
0.964914555
0.919361391
0.866244846
0.623092947
0.43206355
0.396796584
0.37985461
0.38179948
0.405181132
0.408725116
0.474548142
0.427914495
0.449091962
0.461279811
0.434008419
0.180181348
0.246695883
0.31178418
0.365505796
0.464002628
0.168123158
0.194616601
0.120106492
0.195437769
0.243497653
0.177285654
0.137956072
M id d le E a st
T o p W est
T o p E ast
0.03387062
0.25471739
0.46692456
0.48355899
048446164
0.49778637
0.53406404
0.82686439
0.8972276
0.89374597
0.88158178
0.66653772
0.44650763
0.42080378
0.39991403
0.40416935
0.42033097
0.41379755
0.45996132
0.44474533
0.41203525
0.36002579
0.31841822
0.23395659
0.28059317
0.29813024
0.23546099
0.16544165
0.15155813
0.18637438
0.16320653
0.12662798
0.1258113
0.42299592
0.19703417
0.3756128
0.513074
0.54633
0.5755004
0.5569174
0.5473843
0.6418367
0.9626672
0.8200221
0.5425958
0.5611348
0.5473404
0.5212013
0.3997751
0.3682763
0.3190732
0.321797
0.2870473
0.2247527
0.294296
0.4313617
0.3092326
0.3114731
0.3395892
0.3592265
0.2760205
0.2864762
0.3380076
0.3021597
0.3069921
0.2330996
0.2440385
0.2568225
0.2504086
0.2571301
0.2747373
0.4336831
0.4452578
0.449713
0.4636464
0.4628602
0.662689
0.9854289
0.9313113
0.6724293
0.5577298
0.552401
0.4835201
0.4255152
0.4024093
0.2932569
0.2946546
0.2430704
0.3521354
0.2568728
0.4655683
0.3679033
0.3043512
0.4101841
0.2897627
0.2802844
0.3378526
0.2683165
0.4278738
0.1862885
0.2591878
0.2877534
0.2600613
0.2359945
0.3003328
103
T a b le 2 6 c o n tin u e d .
N eu tr o n p ro b e c o u n t ratios c o lle c te d fro m th e M ill G u lc h w a ste
ro ck r e p o sito r y on O c to b e r 2 8 , 1 9 9 7 .
Depth (ft)
112.5-117.5
117.5-122.5
122.5- 127.5
127.5 -132.5
132.5 - 137J
137.5 - 142.5
142.5 -147.5
147.5 - 152.5
152.5 -157.5
157.5 - 162.5
162.5 - 167.5
167.5 - 172.5
172.5 -177.5
177.5 - 182.5
182.5 - 187.5
187.5- 192.5
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5-301.5
301.5-303
303 - 305
305 - 307
307 - 309
309-311
311-313
313-315
L o w e r W est
L o w e r C e n te r
L o w e r E ast
M id d le W e s t
0.166127818
0.176890031
0.13131671
0.147880774
0.133442579
0.412020019
0.484432437
M id d le C e n te r
0.165529999
0.15718867
0.174822152
0.205205335
0.144222873
0.147032129
0.457044317
M id d le E a s t
0.13660004
0.16234687
0.16862239
0.16135826
0.16148721
0.16737589
0.10118203
0.11717172
T o p W est
0.2690354
0.2309909
0.3137575
0.2446975
0.3322087
0.4077266
0.3506159
0.3188536
0.3197322
0.1986135
0.0970004
0.1166816
0.0762209
0.0932662
0.1585482
0.1680373
0.2685522
0.3087494
T o p E ast
0.282512
0.3518734
0.2394014
0.3760275
0.1370192
0.3726206
0.3093306
0.2785373
0.1457986
0.1022949
0.0895408
0.0899339
0.1413434
0.2796293
0.2755672
0.333048
0.403807
0.1976012
0.2003966
0.1885161
0.1345732
0.1157915
0.1614354
0.1297249
0.1315157
0.1277157
0.1344422
0.1512584
0.1633573
0.1610423
0.168555
0.1931023
0.1780332
0.1496423
0.1448376
0.1545343
0.1666769
0.174801
0.2133254
0.3454963
0.3757655
0.4137657
0.4716833
0.4462188
104
Table 27.
Neutron probe count ratios collected from the M ill Gulch
waste rock repository on Decem ber 10. 1996.
Depth (ft)
0.25 - 0.75
0.75 - 1.25
1.25 -1.75
1.75-2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 -10.5
10.5-17.5
17.5-22.5
22J - 27J
27.5 - 32.5
32.5 - 37.5
37.5 - 42J
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 9 2 J
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5-112.5
112.5-117.5
117.5 - 122.5
122.5- 127.5
L o w e r W est
L o w e r C e n te r
0.303045073
0.455520303
0.436111948
0.438150269
0.457470001
0.468016094
0.453437672
0.749525869
0.919326823
0.863893369
0.878028678
0.858265832
0.885738847
0.653547564
0.726306741
0.763616867
0.428135912
0.363707262
0.352983924
0.301715734
0.355066556
0.179505131
0.194039242
0.204496712
0.293163651
0.144897995
0.280845105
0.369689289
0.307755526
0.446472598
0.452138933
0.444007094
0.444007094
0.438167741
0.640166097
0.947272806
0.890220165
0.867771097
0.895237683
0.862883343
0.951208962
0.906310827
0.874735066
0.844543449
0.363207751
0.365976037
0.377395216
0.221808902
0.1782084
0.259743068
0.309745231
0.344911112
0.214801678
0.19602924
0.297417708
0.301267356
L o w e r E ast
0.2145626
0.4981301
0.4486817
0.3934006
0.4158304
0.4353868
0.4736847
0.7933628
0.9600209
0.9077848
0.8766061
0.8760057
0.8249704
0.8056713
0.8380509
0.7952927
0.3654384
0.3772323
0.2634107
0.2455269
0.2489579
0.3454531
0.3095998
0.3433517
0.2591649
0.2100595
0.2896574
0.2895716
M id d le W e s t
0.3655423
0.46518417
0.36924565
0.42039543
0.43621091
0.45193925
0.44536036
0.44845374
0.4359495
0.50640026
0.99345597
0.94587883
0.54731137
0.43647232
0.41590784
0.42305313
0.40658412
0.41115884
0.38501756
0.34554422
0.3926421
0.41403438
0.41050531
0.37329755
0.33726614
0.39207571
0.38641176
0.40819616
0.4415263
0.2862035
0.31949007
0.16094318
0.40841401
0.17379598
0.15205514
0.15035596
0.16573575
01729246
0.12526032
M id d le C e n te r
0.315395596
0.377817191
0.610373318
0.452351084
0.472336376
0.512826059
0.76943375
0.920621188
0.973872042
0.904010036
0.874075356
0.602500324
0.429337717
0.388285677
0.377730674
0.381537397
0.400354717
0.407838387
0.468832461
0.428039971
0.445732578
0.466280227
0.409482199
0.190898473
0.283600813
0.332525847
0.366656573
0.463857767
0.175195743
0.197603495
0.124367349
0.203746161
0.234026907
0.169226111
0.135571225
0.160401436
0.155123935
0.172773284
M id d le E a s t
0.26568349
0.35635808
0.47347942
0.04937596
0.47321886
0.48546514
0.52328965
0.69829855
0.91217419
0.89137289
0.87161382
0.64210462
0.44963826
0.41954367
0.4040404
0.41177033
0.4182843
0.42036878
0.46336104
0.44503505
0.42271381
0.35779115
0.32226825
0.23450324
0.27701781
0.30333429
0.22963947
0.1628929
0.15247054
0.18599581
0.15898451
0.13214692
0.12493812
0.42775129
0.20188992
0.14000712
0.16311003
0.16402199
T o p W est
T o p E ast
0.3687199
0.5293465
0.5302002
0.5527383
0.5425791
0.5209801
0.6146327
0.9183421
0.8030478
0.5168395
0.5414266
0.5332736
0.4986127
0.4022282
0.3639817
0.3043497
0.3175396
0.2766466
0.2115508
0.2907329
0.4092287
0.3034106
0.3108379
0.3295343
0.3527554
0.2724634
0.2705852
0.3301319
0.2910317
0.3035813
0.2290093
0.2370769
0.2512912
0.2465104
0.2578222
0.2637555
0.2278141
0.3059291
0.3408672
0.4756885
0.4720458
0.4180059
0.275985
0.4619749
0.7026047
0.9896034
0.9432774
0.6597499
0.5563412
0.555827
0.488802
0.4159488
0.3995355
0.2966839
0.2900843
0.2415726
0.350381
0.2619715
0.4693888
0.3612232
0.3147258
0.4111491
0.3017408
0.292827
0.3426671
0.2617144
0.4127347
0.1766047
0.2609001
0.2777421
0.258286
0.2351015
0.3063691
0.2717852
0.3515809
0.2442725
105
Table 27 continued.
Depth (ft)
127.5 - 132.5
1325 - 137.5
137.5 - 142.5
142.5 - 147.5
147.5 - 152.5
152.5 - 157.5
157.5 - 162.5
162.5 - 167.5
167.5- 172.5
172.5 - 177.5
177.5 - 182.5
182.5-187.5
187.5 -192.5
192.5 - 197.5
197.5 - 202.5
202.5 - 207.5
207j - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5-301.5
301.5-303
303 - 305
305 - 307
307 - 309
309-311
311-313
313-315
Lower West
Neutron probe count ratios collected from the M ill Gulch waste
rock repository on Decem ber 10, 1996.
Lower Center Lower East Middle West Middle Center
0.1431671 0.205476489
0.1227769 0.142622313
0.38183704 0.142838604
0.47084811
0.4495393
Middle East
0.16958059
0.15386018
0.16280605
0.10939142
0.11833729
Top West
0.2424126
0.3182226
0.393691
0.340718
0.4035941
0.3098135
0.1958424
0.1006531
0.1112819
0.0781577
0.0945063
0.1559312
0.161523
0.2671704
0.3008921
Top East
0.3581806
0.3504667
0.3729655
0.3040978
0.2883701
0.1468635
0.0980518
0.0976661
0.0950091
0.1410781
0.2810847
0.2774849
0.3314392
0.3977784
0.1877041
0.1962322
0.1909182
0.1356783
0.1556058
0.15762
0.1288216
0.1394067
0.1304501
0.1382925
0.1447636
0.1597199
0.1590771
0.1667481
0.1868041
0.175919
0.1538488
0.1434351
0.160577
0.1670481
0.1767761
0.202789
0.3458384
0.3736083
0.408535
0.4321051
106
Table 28. Neutron probe count ratios collected from the Mill Gulch waste
rock repository on January 21, 1997.
Depth (ft)
0.25 - 0.75
0.75 -1.25
1.25 -1.75
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 -10.5
10.5 -17.5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5 -112.5
112.5 -117.5
117.5-122.5
Lower West
0.21159716
0.52897182
0.6807872
0.66839238
0.51801042
0.47623063
0.44629758
0.72497007
0.91055498
0.85355571
0.86780553
0.85085752
0.76025734
0.65157085
0.72551814
0.75840233
0.41202213
0.34068871
0.3371895
0.28697786
0.33204607
0.16686622
0.1866389
0.19270983
0.28276194
0.13811363
0.2789676
0.35325216
Lower Center
0.275146304
0.583329043
0.667722116
0.531672073
0.466628911
0.431361444
0.452427534
0.617094853
0.940980624
0.903439222
0.869415984
0.88726424
0.863709691
0.953594536
0.904468929
0.871475399
0.389701213
0.360182945
0.371037773
0.24768745
0.176680568
0.262489488
0.302605159
0.340875937
0.21864113
0.196459524
0.303205821
0.296984675
Lower East
0.1478153
0.4444975
0.5970849
0.6049711
0.5699484
0.4370157
0.4561447
0.751007
0.943632
0.8739505
0.8276849
0.8145009
0.7849378
0.7684375
0.7992947
0.7536762
0.3471537
0.3484883
0.2729427
0.2345633
0.2366663
0.3262452
0.2891195
0.3242231
0.2424899
0.1971141
0.2685345
0.2742369
Middle West
0.07917392
0.43654002
0.51263032
0.60184684
0.50175433
0.45554176
0.44087375
0.41866338
0.41895507
0.4712932
0.92520981
0.92846011
0.52129779
0.42745585
0.4043704
0.41074599
0.39132754
0.4057872
0.3741593
0.34136463
0.3632833
0.4018285
0.39078582
0.3556576
0.32515481
0.37420097
0.37107568
0.38995241
0.41974681
0.27415013
0.31123686
0.15793114
0.39399445
0.16409838
0.14042954
0.14447158
0.15905625
0.16805707
Middle Center
0.376282782
0.563199459
0.670763123
0.464588876
0.501161367
0.530976815
0.711600997
0.899108915
0.966003632
0.899826851
0.857637569
0.612019089
0.420288019
0.384982474
0.373411039
0.371848473
0.386629503
0.396638372
0.449132142
0.422990836
0.443810972
0.459816715
0.412432957
0.187803539
0.245069471
0.302082014
0.357954306
0.451370413
0.164238355
0.192195616
0.118923941
0.185438574
0.23303349
0.167110098
0.130664302
0.160859834
0.156129904
Middle East
0.22757855
0.50238007
0.71961414
0.56226031
0.44931205
0.47946242
0.51701373
0.58631333
0.87961717
0.87902846
0.85644722
0.65611754
0.44107011
0.41155049
0.3972112
0.37786786
0.40675671
0.40713517
0.45856321
0.44119626
0.40158447
0.34031656
0.3055406
0.22068223
0.28228655
0.2906967
0.22661138
0.1611384
0.14335094
0.18094429
0.15920406
0.12913779
0.12346094
0.41264381
0.19204568
0.13477259
0.1557559
Top West
0.35835
0.534667
0.534998
0.558193
0.538892
0.526673
0.722291
0.893348
0.785744
0.50994
0.535371
0.52394
0.491675
0.395543
0.353338
0.301151
0.309849
0.267396
0.21202
0.289057
0.399561
0.298666
0.297631
0.332546
0.343398
0.269881
0.270502
0.323227
0.288809
0.289969
0.220842
0.225232
0.24884
0.238279
0.246604
0.257869
0.213179
Top East
0.309664
0.484916
0.466597
0.43584
0.464916
0.471303
0.656176
0.948992
0.904748
0.652647
0.533445
0.543361
0.478319
0.410294
0.388445
0.284202
0.281849
0.232731
0.348193
0.252311
0.449622
0.368697
0.311555
0.398782
0.293697
0.286008
0.328866
0.262521
0.391471
0.174454
0.250336
0.267941
0.248445
0.224916
0.300336
0.267941
0.345
107
Table 28 continued. Neutron probe count ratios collected from the Mill Gulch waste rock
repository on January 21, 1997.
Depth (ft)
Lower West
122.5 - 127.5
127.5 -132.5
132.5 -137.5
137.5 -142.5
142.5 -147.5
147.5 - 152.5
152.5 -157.5
157.5 - 162.5
162.5 - 167.5
167.5 -172.5
172.5 - 177.5
177.5 -182.5
182.5 -187.5
187.5 -192.5
192.5 -197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227.5 - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277.5 - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5 - 301.5
301.5 - 303
303 - 305
305 - 307
307 - 309
309-311
311-313
313-315
Lower Center
Lower East
Middle West
0.12030269
0.13772096
0.12480311
0.36661694
0.43191459
Middle Center
0.164829596
0.209214916
0.139026141
0.099286287
0.44068584
Middle East
Top West
0.16433425
0.29059
0.15861535 0.153164
0.14482271
0.31424
0.15134058 0.381751
0.10525298 0.332712
0.11273801 0.301441
0.299163
0.19276
0.099942
0.107025
0.071695
0.090002
0.143638
0.151798
0.261059
0.289347
Top East
0.235462
0.349412
0.343025
0.360378
0.299748
0.267227
0.135882
0.097773
0.086345
0.087899
0.133403
0.271092
0.275924
0.331849
0.391807
0.184874
0.191555
0.185378
0.130588
0.150546
0.151471
0.163235
0.132815
0.125588
0.132059
0.138487
0.154706
0.155042
0.167395
0.184286
0.174874
0.147395
0.136681
0.153445
0.159454
0.168487
0.198445
0.332689
0.358908
0.393866
0.425126
108
Table 29.
Neutron probe count ratios collected from the M ill Gulch
waste rock repository on March 8, 1997.
D e p th (ft)
0 .25 - 0.75
L o w e r W e st
0 .1 3 3 2 6 1 0 4 1
L o w e r C e n te r
0 .2 0 2 0 6 6 5 9
L o w e r E a st
M id d le W e s t
0 .0 9 7 4 5 4 1 0 3
0 .0 6 4 3 8 5 7
0 .4 0 5 9 4 9 5 5 4
0 .75 - 1 .2 5
0 .5 4 7 2 3 4 3 8 9
0 .5 4 3 7 3 4 3 2
0 .4 6 3 0 4 6 3 3
1.25 - 1 .7 5
0 .6 7 1 0 4 9 3 9 9
0 .6 6 4 4 9 8 0 2 3
0 .6 3 8 8 7 5 3 1 2
0 .5 2 2 3 0 8 7 5 2
1.75 - 2.25
0 .6 7 6 2 1 7 1 8 2
0 .5 3 4 6 3 4 5 2
0 .6 4 0 2 0 4 4 2 6
0 .6 0 9 0 6 9 6 2 5
2 .2 5 - 2.75
0 .5 2 0 2 9 4 1 4
0 .4 8 8 1 1 4 9 8 1
0 .5 9 6 8 5 8 1 4 5
0 .5 2 9 0 3 3 7 5 8
2 .7 5 - 3.25
0 .5 2 0 5 0 5 9 3 4
0 .4 2 6 1 1 7 2 7 7
0 .4 5 5 6 2 9 0 1 4
0 .4 3 8 9 1 0 3 8 3
3 2 5 - 3.75
0 .4 6 1 5 4 2 3 7 2
0 .4 6 5 3 6 5 4 8
0 .5 1 3 4 6 6 9 3 1
0 .4 8 3 0 3 8 0 4 2
3.75 - 4.25
0 .7 1 1 1 2 0 9 0 1
0 .6 2 6 0 5 7 7 4 5
0 .7 9 0 0 0 8 4 8 9
0 .3 9 3 8 6 9 4 5 2
4 .2 5 - 4.75
0 .9 0 9 1 9 1 0 3
0 .9 1 7 8 8 9 1 8 7
0 .9 4 4 1 8 5 7 6 7
0 .4 0 1 4 2 4 7 0 5
4 .7 5 - 5.25
0 .8 4 0 4 4 2 5 6 6
0 .8 8 3 8 7 1 2 4 2
0 .9 2 6 5 6 4 2 8 2
0 .4 3 7 6 2 3 4 9 9
5.25 - 5.75
0 .8 5 2 5 9 9 5 6 5
0 .8 6 3 2 4 7 8 6 3
0 .8 8 0 9 8 8 5 1 8
0 .9 3 7 4 3 2 5 4 2
5 .7 5 - 6.5
0 .8 3 1 2 5 0 6 8 8
0 .8 6 7 9 2 5 3 3 1
0 .8 6 6 9 6 8 5 0 4
0 .8 9 5 9 2 0 1 6 3
6 .5 - 7.5
0 .7 6 6 9 4 9 9 0 6
0 .8 5 8 5 7 0 3 9 6
0 .8 3 4 0 4 0 7 6 5
0 .5 1 8 5 7 2 6 3 8
7 .5 - 8.5
0 .6 3 9 0 2 6 0 8 5
0 .9 2 1 5 0 3 5 9 3
0 .8 1 4 7 4 7 1 6 8
0 .4 3 4 3 8 5 5 3 4
8.5 - 9.5
0 .7 1 7 3 0 5 2 9 7
0 .9 1 5 6 7 8 0 2
0 .8 5 8 9 0 8 0 6 8
0 .4 0 4 7 8 7 2 0 8
9.5 - 1 0 .5
0 .7 4 7 3 8 0 1 0 3
0 .8 5 9 3 7 8 3 2 2
0 .8 0 5 5 7 1 9 9 1
0 .4 0 5 9 0 8 0 4 2
10.5 - 1 7 .5
0 .4 1 1 3 8 9 4 5 6
0 .3 9 8 0 9 4 9 9 5
0 .3 5 7 7 4 6 1 6 5
0 .4 0 2 1 3 0 4 1 5
17.5 - 22.5
0 .3 5 1 0 7 0 4 0 9
0 .3 5 9 2 2 9 4 9 4
0 .3 7 6 4 3 9 5 1 7
0 .4 0 6 5 3 0 7 2 7
109
T a b le 2 9 con tin u ed .
N eu tron p robe cou n t ratios c o lle c te d from the M ill G u lch
w a ste rock repository on M arch 8, 1997.
D e p th (ft)
L o w e r W e st
L o w e r C e n te r
0 .3 5 6 5 5 0 5 8
L o w e r E a st
M id d le W e st
0 .2 6 4 1 9 3 6 5 6
0 .3 6 8 7 5 4 4 6 3
2 2.5 - 27.5
0 .3 3 9 8 4 5 3 0 5
2 7.5 - 32.5
3 2 .5 - 37.5
0 .2 8 9 0 1 4 6 4 8
0 .2 4 0 2 0 9 2 1
0 .2 4 8 1 1 5 6 5 9
0 .3 5 3 8 1 0 0 0 6
0 .3 2 9 3 8 2 6 6 2
0 .1 7 4 5 1 2 0 5 5
0 .2 3 9 2 8 3 4 7 9
0 .3 6 4 8 1 0 7 8 7
3 7 .5 - 42.5
0 .1 7 4 8 9 9 8 2 1
0 .2 6 6 9 9 8 3 4 2
0 .3 4 0 5 1 0 5 5 1
0 .4 0 0 3 8 6 8 9 5
4 2 .5 - 47.5
0 .1 8 5 5 7 4 2 5 9
0 .3 0 1 4 8 4 0 3 3
0 .3 0 2 3 5 2 1 0 4
0 .3 9 1 2 9 5 6 8 4
4 7 .5 - 52.5
0 .1 8 9 7 6 7 7 8 9
0 .3 3 7 1 1 7 8 3
0 .3 3 6 9 0 9 0 8
0 .3 5 3 0 2 1 2 7 1
5 2.5 - 57.5
0 .2 8 5 7 5 3 0 1 4
0 .2 0 8 9 5 5 2 2 4
0 .2 5 5 3 6 1 4 7 6
0 .3 1 9 8 1 1 3 6 8
0 .2 0 8 8 8 5 3 4 5
0 .3 6 8 4 6 3 8 7 6
!57.5 - 62.5
0 .1 3 9 1 4 8 9 2 5
0 .1 8 9 8 2 0 1 3
6 2.5 - 67.5
0 .2 7 1 3 5 0 9 9 4
0 .2 9 3 6 1 7 3 8 3
0 .2 7 9 4 1 4 1 6 1
0 .3 5 4 3 9 1 1 7 9
0 .3 5 7 9 3 2 5 4 8
0 .2 9 5 3 6 0 8 0 3
0 .2 8 5 0 7 3 6 1 6
0 .4 0 2 7 1 1 5 8 9
6 7.5 - 72.5
7 2 .5 - 77.5
0 .4 3 9 4 0 8 5 3 2
|77.5 - 82.5
0 .2 8 0 2 9 1 5 8 3
8 2.5 - 87.5
0 .3 1 5 4 1 1 0 5 6
8 7.5 - 92.5
0 .1 5 3 4 2 9 7 5 3
9 2 .5 - 97.5
0 .4 0 4 4 5 5 1 0 9
9 7 .5 - 102.5
0 .1 8 4 3 5 6 4 7 5
102.5 - 1 0 7 .5
0 .1 5 6 9 5 8 3 0 5
107.5 - 1 1 2 .5
0 .1 4 4 2 1 4 0 0 5
112.5 - 1 1 7 .5
0 .1 5 9 7 8 1 1 4 7
117.5 - 1 2 2 .5
0 .1 8 3 4 4 3 2 0 3
1 22.5 - 127.5
0 .1 2 0 0 5 3 8
127.5 - 132.5
0 .1 5 6 2 1 1 0 8 2
132.5 - 137.5
0 .1 1 6 7 7 4 3 2 2
137.5 - 142.5
0 .3 5 4 9 7 2 3 5 3
147.5 - 152.5
0 .4 4 5 3 4 4 8 0 2
D a ta n o t a v a ia b le fo r th e in c re m e n ts d e e p e r th a n 152.5 ft d u e to
e q u ip m e n t fa ilu re .
HO
T able 30.
Neutron probe count ratios collected from the Mill Gulch waste
rock repository on April 9, 1997.
Depth (ft)
0.25 - 0.75
0.75 -1.25
1.25-1.75
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
5.25 - 5.75
5.75 - 6.5
6.5 - 7.5
7.5 - 8.5
8.5 - 9.5
9.5 - 10.5
10.5-17.5
17.5 - 22.5
22.5 - 27.5
27.5 - 32.5
32.5 - 37.5
37.5 - 42.5
42.5 - 47.5
47.5 - 52.5
52.5 - 57.5
57.5 - 62.5
62.5 - 67.5
67.5 - 72.5
72.5 - 77.5
77.5 - 82.5
82.5 - 87.5
87.5 - 92.5
92.5 - 97.5
97.5 - 102.5
102.5 - 107.5
107.5-112.5
1 1 2 J - 117.5
Lower Center
Lower West
0.260776487 0.268242724
0.472126981 0.477383289
0.564539515 0.601348468
0.66155775 0.634249381
0.529271788 0.562174618
0.487308735 0.497482291
0.461124473 0.485619186
0.713286594 0.613467611
0.9265597
0.911587602
0.850007676 0.890415635
0.847321017 0.868353674
0.845444621 0.893232056
0.784717602 0.866732099
0.648422974 0.942519416
0.726037562 0.918025092
0.770090238 0.862379449
0.426539072 0.410087906
0.348156867 0.363873005
0.330459035 0.366646753
0.296683895 0.245241956
0.347090732 0.177519843
0.179664978 0.266407784
0.189686642 0.305026884
0.196211385 0.342963216
0.293954591 0.216138943
0.144823704 0.191601946
0.276725858 0.295169412
0.30075958
0.352293468
Lower East Middle West Middle Center
0.1594647 0.05467801
0.332004255
0.4186423 0.35391964
0.611780769
0.4988168 0.41970084
0.694373477
0.6459858 0.64540998
0.47541066
0.625858
0.6777559
0.529983833
0.4652142 0.60824569
0.560851392
0.4963745 0.56915406
0.673432121
0.7931548 0.43884862
0.885609938
0.9371658 0.40817866
0.942361012
0.9073951 0.46428123
0.891808579
0.8789719 0.93195626
0.853569664
0.9414673
0.8729083
0.604953887
0.527339
0.8459167
0.410241161
0.8214096 0.42317845
0.390011811
0.8597704 0.41132107
0.373426257
0.8106299 0.41417019
0.368944807
0.366512 0.39657267
0.389509218
0.3710176 0.40901663
0.399058477
0.377383
0.2649885
0.455809551
0.2502084 0.34336113
0.416942395
0.2397655 0.36883563
0.433192887
0.4027737
0.3392257
0.452123872
0.3954833
0.3034335
0.417780049
0.3442787 0.36410106
0.176954457
0.2457449 0.32500943
0.23600908
0.204605 0.37424058
0.305576264
0.2836004 0.37507856
0.364379591
0.2894114 0.39250848
0.453715415
0.42187958
0.27376713
0.17067205
0.30657393
0.198524053
0.118402426
0.16290275
0.19894288
0.38546948
017434114
0.228763371
0.14321029
0.16975063
0.131427949
0.146646
0.15795869
0.156557576
Middle East
0.25645769
0.46776201
0.691679
0.57009283
0.46027849
0.49176813
0.55668135
0.5897686
0.87586607
0.8689291
0.86169783
0.67069992
0.44480694
0.4155035
0.39414604
0.38994181
0.40469864
0.40877674
0.46868694
0.45981602
0.43892103
0.38060844
0.32877035
0.23972488
0.2691124
0.28819958
0.22913023
0.15807884
0.14332201
0.18267355
0.16615095
0.1322649
0.12137596
0.40751547
0.19726221
0.13756222
Top West
0.2732834
0.5189878
0.5394213
0.6055693
0.5626964
0.5106723
0.5721819
0.8791034
0.8235274
0.5206592
0.5271779
0.5209099
0.4941666
0.405454
0.3652136
0.3055008
0.3211707
0.2798439
0.2107709
0.2927141
0.4000217
0.3021579
0.299776
0.3279819
0.3515077
0.2623354
0.2741191
0.3304473
0.2897891
0.300361
0.2268587
0.2364278
0.2495905
0.2403557
0.2480026
0.2546884
Top East
0.2774023
0.4618303
0.526587
0.6426254
0.6132251
0.4807124
0.6782353
0.9737594
0.9206191
0.6784043
0.5406113
0.5405691
0.4836271
0.4236436
0.3958062
0.2941301
0.3038457
0.2369768
0.3372168
0.262153
0.464576
0.3823311
0.3179122
0.4061132
0.2915111
0.2935387
0.3395823
0.2674332
0.4016356
0.1856107
0.2523106
0.2798101
0.2538736
0.2278104
0.3038879
0.2706858
Ill
Table 30 continued.
Neutron probe count ratios collected from the Mill Gulch waste rock
repository on April 9, 1997.
Depth (ft)
117.5 -122.5
122.5 - 127.5
127.5 - 132.5
132.5 - 137.5
137.5 - 142.5
142.5 - 147.5
147.5 - 152.5
152.5 - 157.5
157.5 - 162.5
162.5- 167.5
167.5-172.5
172.5 - 177.5
177.5 - 182.5
182.5 - 187.5
187.5- 192.5
192.5- 197.5
197.5 - 202.5
202.5 - 207.5
207.5 - 212.5
212.5 - 217.5
217.5 - 222.5
222.5 - 227.5
227J - 232.5
232.5 - 237.5
237.5 - 242.5
242.5 - 247.5
247.5 - 252.5
252.5 - 257.5
257.5 - 262.5
262.5 - 267.5
267.5 - 272.5
272.5 - 277.5
277J - 282.5
282.5 - 287.5
287.5 - 292.5
292.5 - 297.5
297.5-301.5
301.5-303
303 - 305
305 - 307
307 - 309
309 -3 1 1
3 1 1 -3 1 3
3 1 3 -3 1 5
Lower Wesi
Lower Center
Lower East
Middle West Middle Center
0.15538486
0.16713454
0.174357729
0.12477479
0.200031831
0.13881091
0.138254831
0.12163238
0.139762609
0.45611095
0 .432648411
0
Middle East
0.15580856
0.1637125
0.1629137
0.14752623
0.13613279
0.10296146
0.11250505
Top West
0.2220114
0.2983135
0.2462476
0.325224
0.3818864
0.3406432
0.3167831
0.309178
0.1961456
0.1053019
0.1070569
0.073962
0.0890887
0.1498462
0.1581199
0.2638397
0.3007371
Top East
0.3475238
0.2486778
0.3453272
0.3484953
0.3621817
0.2991569
0.2755014
0.1489448
0.0941993
0.0934812
0.0879476
0.1385111
0.2759238
0.277867
0.3233192
0.3927226
0.1848504
0.1936789
0.1861599
0.1344981
0.1564216
0.1504233
0.1270213
0.1404964
0.1304851
0.1380042
0.1393559
0.1627156
0.1540983
0.1706149
0.1893703
0.1733606
0.1508034
0.1417214
0.1579846
0.1625889
0.1678692
0.2066472
0.3445246
0.3654766
0.4059865
0.4596337
APPENDIX D
WATER STORAGE DATA FOR MILL GULCH
113
T a b le 3 1.
In c h e s o f w a ter sto ra g e in the L o w e r b en ch - w e st tube.
C a p p in g M a t e r ia ls
Date
!5-21-96 -6-24-96 17-22-96 18-15-96 19-24-96 10-29-96 i12-10-96 11-21-97 13-5-97 14-9-97
LDepth
!Increment (ft) Lithology
i
I
I
I
i
I
|
j
§0.25 - 0.75
T h i s z o n e i s u n d e r c o n s tr u c tio n .
--------- --------10.75 -1.25
T h i s z o n e is u n d e r c o n s tr u c tio n .
1.25 - 1.75
T h i s z o n e is u n d e r c o n s tr u c tio n ,
j
1.75 - 2.25
o x i d i z e d w a s te r o c k
0.74
1.06
0.85
0.90|
0.87
0.89
0.80
1.52
1.54
1.50
2.25 - 2.75
o x i d i z e d w a s te r o c k
0.98
1.17
0.97
0.95
0.941
0.961
0.95
1.11
1.12
1.14
12.75 - 3.25
o x i d iz e d w a s te ro c k
1.04
1.18
0.97
0.97
1.01
0.981
1.00
1.12
1.03
325 - 3.75
! o x i d i z e d w a s te r o c k
0.96
1.21
0.95
0.94
0.96
0.95
0.94
0.92
0.96
0.96
3.75 - 4.25
o x i d i z e d w a s te ro c k
1.891
1.88
1.60
1.71
1.66
1.63
1.74
1.68
1.641
1.65
( 4 .2 5 ■ 4.75
E m m c r s o n s h a le
2.19
2.20
2.24
2.25
2.18
2.23
2.21
2.18
2.18
2.19
4.75 - 5.25
! E m m c r s o n s h a le
2.06
2.05
2.06
2.04
1.99|
2.03
2.06
2.03
1.99
2.02
«5.25 - 5.75
I E m m c r s o n s h a le
2.01
2.04
2.04
1.97
1.96
2.03
2.09
2.07
2.03
2.01
5.75 - 6.50
B m m c rs o n s h a le
2.81
2.93
2.96
2.59
2.861
2.96
3.06
3.03
2.95
3.01
Total
14.68
15.71
14.63
14.22
14.45!
14.68
14.92
15.54
15.53
15.50
Change in Storage
1.03
-1.08
-0.41
0.22
0.24
0.23
0.62
-0.01
-0.02;
i.ooi
W a s te R o c k
6.50 - 7.50
! w a s te ro c k
7.50 - 8.50
w a s te r o c k
8.50 - 9.50
I w a s te r o c k
19.50 - 10.50
Iw a stc ro c k
10.50 - 17.50 ! w a s te r o c k
17.50 - 22.50
w a s te ro c k
22.50 - 27.50
w a s te ro c k
27.50 - 32.50 Iw a s te ro c k
32.50 - 37.50 ! w a s te r o c k
137.50 - 42.50 ! w a s t e r o c k
42.50 - 47.50 ! w a s t e r o c k
47.50 - 52.50 ! w a s t e r o c k
52.50 - 57.50
w a s te ro c k
|57.50 - 62.50
w a s te ro c k
62.50 - 67.50
w a s te r o c k
67.50 - 72.50 ! n a ti v e m a te r ia l
Total
Change in Storage
Precipitation (in)
j
j
j
j
j
_L
I
— 4—
Total Precipitation =
Total Drainage from Waste Rock =
Total Drainage from Capping Materials
2.25
1.73 L
1.91
2.11:
8.94
5.36
5.24
4.37
5.271
2.39|
2.59
2.80
4.38
1.89
4.18
5.58
55.39 "
2.27
1.78
196
2.11
8.94
5.39
5.18
4.35
5.07
2.32
2.45
2.69
4.27
1.73
4.10
5.49
54.61
-0.77
3.29
2.38
1.91
2.07
2.24
9.36
5.52
5.33
4.48
5.21
2.30
2.57
2.74
4.42
1.86
4.21
5.50
56.57
1.96
1.04
2.40
1.92
2.10
2.26
9.06
5.43
5.14
4.33
5.16
2.42
2.60
2.65
4.34
1.94
4.14
5.58
55.87
-0.71
0.32
2.32:
1.88
2.08
2.28
8.95
5.28
4.89
4.15
5.17
2.30
2.38
2.75
4.22:
1.71
3.92!
5.38!
54.30
-1.57
3.13
14.26
5.96
1.52
2.30
1.98
2.20
2.34
9.17
5.29
5.03
5.171
4.29!
2.15
2.29
2.60
4.35|
1.90
4.19
5.72
55.25
0.95
0.95
2.80 r
2.04
2.28
2.40
9.06
5.41
5.23
4.39
5.27
2.37
2.61
2.79
4.25
1.80
4.05
5.51
56.76
1.51
1.96
2.39
2.03
2.28
2.38
8.69
5.03
4.97
4.15
4.89
2.17
2.49
2.59
4.08
1.69
4.01
5.24
53.85
-2.91
1.35
inches
inches
inches
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
2.41
1.99
2.25
2.35
8.68
5.20
5.02
4 18
4.85
2.30
2.47
2.54
4.13
1.71
3.89
5.32
53.96
0.11
0.83
2.47
2.02
2.28
2.42
9.03
5.15
4.86
4.31
5.14
2.38
2.54
2.65
4.26
1.80
3.98
5.22
55.28
1.32
1 3 ^
114
T ab le 32.
In ch es o f w ater storage in the L o w e r ben ch - cen ter tube.
C a p p in g M a te r ia ls
W a ste R o c k
7.50 - 8.50
8.50 - 9.50
9.50 - 10.50
10.50 - 17.50
17.50 - 22.50
22.50 - 27.50
27.50 - 32.50
32.50 - 37.50
37.50 - 42.50
42.50 - 47.50
47.50 - 52.50
52.50 - 57.50
57.50 - 62.50
62.50 - 67.50
67.50 - 72.50
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
iwaste rock
jwaste rock
Inative material
Total
Change in Storage
Precipitation (in)
Total Precipitation =
Total Drainage from Waste Rock =
Total Drainage from Capping Materials
2.95
2.83
2.54
8.41
5.52
5.66
3.53
2.48
3.86
4.52
4.96
3.01
2.71
4.47
4.41
2.97
2.88
2.63
8.54
5.45
5.58
3.59
2.58
3.92
4.43
5.11
3.03
2.72
4.47
4.59
3.02
2.86
2.64
8.76
5.47
5.42
3.58
2.42
3.92
4.44
5.03
3.00
2.72
4 .5 ?
4.4.3
3.07
2.90
2.74
8.91
5.58
5.74
3.72
2.45
3.92
4.49
5.32
3.09
2.86
4.60
4.58
57.43
57.89
0.46
3.29
57.77
-0.13
1.04
59.39
1.62
0.32
3.02
2.85
2.73:
8.41
5.43
5.51
3.53
2.45
3.88
4.40
4.94
3.00
2.76
4.41
4.34
57.33
-2.06
3.13
14.26
4.06
3.11
2.97
2.92
2.73
8.63
5.51
5.39
3.62
2.37
3.84
4.29:
4.99
2.95
2.66
4.42
4.361
57.28
-0.05
0.95
2.87i
2.77
2.67
7.56
5.45
5.64
3.67
2.35
3.70
4.52
5.10
2.96
2.65
4.32
4.38
56.22
-1.06
1.96
3.03
2 .8 7 1
2.76
8.18
5.35
5.53
3.50
2.33
3.74
4.40
5.03
3.02
2.65
4.41
4.31
56.80
0.58
1.35
inches
inches
inches
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
2.92
2.90
2.72
8.37
5.34
5.29
3.38
2.29
3.82
4.39
4.97
2.86
2.54
4.26
4.28
2.99
2.9!
2.73
8.65
5.41
5.46
3.46
2.34
3.81
4.44
5.07
2.98
2.57
4.28
4.37
56.04
-0.76
0.83
57.10
1.05
1.39
115
T ab le 3 3 .
In ch es o f w ater storage in the L o w e r bench - east tube.
C a p p in g M a te r ia ls
Date
Depth
Increment (ft) ILithology
0 .2 5 - 0.75
0.75 - 1.25
1 .2 5 -1 .7 5
1.75 - 2.25
2.25 - 2.75
12.75 - 3.25
1325 - 3.75
3.75 - 4.25
4.25 - 4.75
4.7 5 - 5.25
5.25 - 5.75
5.75 - 6.50
6.50 - 7.50
15-21-96
6-24-96 17-22-96 18-15-96 19-24-96
10-29-96112-10-96 1-21-97 13-5-97
14-9-97
—
This zone is under construction.
----------- j--------------
This zone is under construction.
This zone is under construction.
Emmcrson shale
0.59!
0.85
0.92i
1.041
1.99!
Emmerson shale
J ____ 2.24:
Emmerson shale
2.201
2.06!
2.951
3.62
oxidized waste rock
oxidized waste rock
oxidized waste rock
oxidized waste rock
Emmerson shale
IEmmerson shale
jEmmeraon shale
Total
Change in Storage
0.88
0.9 6 |
1.01
1 .I6 |
2.03
2.28
2.21
2.11
3.05
3.82
I
19.51
1.06
18.95
-0.56
19.25
0.30
0.82
0.86
0.91
1.03
1.83
2.31
2 .I6 |
2.08
3.03!
3.89
18.91
-0.35
2.09
2.111
2.05
7.65
5.62
3.81
3.50
3.49
5.03
4.45
4.93
3.62
2.81
4.16
4.39
2.29
2.21
2.13
7.78
5.57
3.82
3.45
3.50
5.17
4.55
4.90
3.63
2.90
4.21
4.43
2.39
2.35
2.28:
7.81
5.76
3.95
3.61
3.47
5.20
4.45
5.09
3.65
2.97
4.18
4.24
2.50
2.48
2.34
8.01
5.76
3.87
3.65
3.62
5.33
4.62
5.24
3.81
2.97
439!
4.25
2.49
2.44
2.41
7.84
5.70
3.79
3.45
3.53
4.99
4.45
5.14
3.69
2.85
3.99
4.13
54.19
1.22
0.32
52.79
-1.40
3.13
18.45
I
0.751
0.85
0.91
0.99
1.81!
2.32|
2.22
2.09
3.14
3.89
0.70
0.84
0.88
1.00
1.92
2.36
2.24
2.13
3.15
4.02
0.78
0.83
0.87
0.97
1.90
2.33
2.19
2.12 j
3 061
3.88.
0.77
0.83
0.89
0.99
1.86
2.32
2.18
2.09
3.13
3.90
18.91!
0.00
2.50
2.57!
2.44
7.75
5.57!
3.871
3.56
3.54
5 .2 1 1
4.55!
5.03
3.63i
2.78
4.15
4.27
18.97
0.06
1.35
1.25
0.89
0.94
1.75
2.27
2.08
1.96
2.88
3.68
19.07
0.10
M sl
1.33
0.94
I. IOl
1.85
2.28
2.23
2.10
3.10
3.95
20.32
1.26
2.54
2.65
2.51
7.62
5.63
3.76
3.46
3.52
5.11
4.52
5.08
3.69
2.88
4.19
4.19
2.42
2.52
2.37
7.19
5.16
3.91
3.28
3.32
4.79
4.18
4.76
3.41
2.66
3.84
3.94
2.57
2.72
2.54
7.44
5.62
3.77
3.51
3.36
5.03
4.40
4.97
3.62
2.86
4.02
4.11
52.95
-0.03
1.96
49.98
-2.97
1.35
52.40
2.42
0.83
L46
1.41
0.97
1.05
1.86
2.26
2.17
2.10
3.12
4.01
20.42
oTo?
W a ste R o c k
1*7.50 - 8.50
18.50 - 9.50
9.50 - 10.50
10.50 - 17.50
17.50 - 22.50
22.50 - 27.50
27.50 - 32.50
32.50 - 37.50
37.50 - 42.50
42.50 - 47.50
47.50 - 52.50
52.50 - 57.50
57.50 - 62.50
»62.50 - 67.50
167.50 - 72.50
waste ruck
waste rock
waste rock
waste ruck
waste ruck
waste ruck
waste rock
waste ruck
waste ruck
waste ruck
waste ruck
waste rock
waste ruck
native material
native material
Total
Change in Storage
Precipitation (in)
51.18
Total Precipitation =
Total Drainage from Waste Rock =
Total Drainage from Capping Materials
51.89
0.71
3.29
52.97
1.08
1.04
14.26
4.40
0.91
52.98
0.19
0.95!
inches
inches
inches
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
2.59
2.72
2.56
7.64
5.53
3.78
3.54
3.37
5.01
4.42
5.09
3.47
2.79
4.09
439«
52.50
0.10
1.39
116
T ab le 3 4 .
In ch es o f w ater storage in the M id d le ben ch - w est tube.
C a p p in g M a te r ia ls
!Date
5-21-96 16-24-96 7-22-96 8-15-96 9-24-96 10-29-96 12-10-96 i 1-21-97 13-5-97
4-9-97
D ep th
In c re m e n t (ft) !L ithology
0.25 - 0.75
!This zone is under construction.
_ _ _ _ _ _ _ I_________
J .......
I
I
0.75 - 1.25
!This zone is under construction.
I
I
1.25 - 1.75
i topsoil
0.57
0.57
0.24!
0.14
0.441
0.35
0 .7 1 1
1.10
1.12
0.84
1.75 - 2.25
!oxidized waste rock
0.97
1.04
0 80|
0.75
0.87!
0.84
0.85
1.34
1.36
1.46
2.25 - 2.75
!oxidized waste rock
1.01
1.08
0.93
0.87
0.96,
0.92
0.89
1.07 j
1.14
1.55
2.75 - 3.25
!oxidized waste rock
1.01
1.06
0.94
0.92
0 .9 8 1
0.94
0.93
0.941
0.90
1.36
325 - 3.75
!oxidized waste rock
0.99
1.05
0.92 j
0.89
0.96
0.91
0.93
0.90
1.02
1.25
I oxidized waste rock
3.75 - 4.25
1.00
1.06
0.96!
0.94
0.95
0.94
0.92!
0.84
0.77
0.90
!oxidized waste rock
4.25 - 4.75
0.94
1.03
0.89!
0.89
0.91
0 951
0.891
0.84
0.79
0.81
I Emmcrson shale
4.75 - 5.25
1.36
1.56
1.17
1.10
1.181
1.10
1.0 8 1
0.99
0.89
0.97
I Emmerson shale
5.25 - 5.75
I
Z38
2.37
2.33!
2.39
2.341
2.34 j
2.41 j
2 .2 2 1
2.26
2.24
j
Emmerson
shale
5.75 - 6.50
3.16
3.32
3.39|
3.31
3.39
3.46
3 .4 2 1
3.35!
3.22
3.40
T o tal
13.38
14.16
12.58;
12.19
12.73'
13 .0 2 1
13.01 1
13.59
13.48
14.78
C h an g e in S to rag e
0.78
-1.58!
-0.39
-0.29
0.83'
0.28!
0 .5 8 1
-0.12
1.31
W a s te R o ck
T otal
C h an g e in S to rag e
P re c ip ita tio n (in)
:
I
I
_ L
I
_L
-.j
i
I
!waste rock
6.50 - 7.50
7.50 - 8.50
[waste rock
[waste rock
18.50 - 9.50
waste rock
9.50 -1 0 .5 0
waste rock
1 0 .5 0 -1 7 .5 0
waste rock
1 7 .5 0 -2 2 .5 0
waste rock
22.50 - 27.50
waste rock
27.50 - 32.50
32.50 - 37.50
waste rock
37.50 - 42.50
waste rock
42.50 - 47.50
waste rock
47.50 - 52.50
waste rock
152.50 - 57.50
waste rock
57.50 - 62.50
waste rock
waste rock
62.50 - 67.50
67.50 - 72.50
waste rock
72.50 - 77.50
waste rock
77.50 - 82.50
waste rock
82.50 - 87.50
waste rock
87.50 - 92.50
waste rock
92.50 - 97.50
waste rock
waste rock
97.50 - 102.50
102.50 - 107.50 waste rock
107.50 - 112.50 waste rock
1 1 2 .5 0 -1 1 7 .5 0 waste rock
1 1 7 .5 0 - 122.50 waste rock
122.50 - 127.50 waste rock
127.50 - 132.50 !waste rock
132.50 - 137.50
137 .5 0 - 142.50 native material
142.50 - 147.50 Inative material
I
1.58
1.34
1.28
1.30
8.76
6.44
5.73
5.15
5.66
6.33
6.31
5.59
5.16
5.71
5.70
6.22
6.83
3.77
4.51
2.17
6.27
2.20
1.84
1.93
2.19
2.45
2.41
1.79
1.61
6.35
7.27
118.24
T otal Precipitation =
Total D rainage from W aste Rock =
Total D rainage from C apping M aterials =
1.63
1.33
1.26
1.25
8.62
6.36
5.63
4.97
5.61
6.28
6.22
5.52
5.01
5.66
5.69
6.23
6.57
3.90
4.64
2.08
6.08
2.20
1.76
1.82
2.15
2.32
2.16
1.91
1.59
6.07
7.29
116.46
-1.78
3.29
1.66
1.32
1.29
1.27
8.56
6.45
5.61
5.13
5.62
6.23
6.10
5.501
4.94
5.70
5.811
6.12
6.70
3.95
4.62
2.00
6.02
2.39
1.71
1.84
2.07
2.24
1.53
1.90
1.53
5.98
7.27
115.81
-0.66
1.04
1.67
1.35
1.31
1.29
8.77
6.57
5.79
5.28
5.72
6.38
6.14
5.72
5.02
5.69
5.70
5.98
6.73,
4.11
4.57
2.10
6.201
2.22
1.83
1.88
2.11
2.29
1.55
1.88
1.55
6 .1Tt
7.36
117.38
1.57
0.32
1.661
1.31
1.24
1.29
8.69
6.28
5.60
5.28!
5.67
6.23
6.04
5.58
4.99
5.78
5.80
6.06
6.57
3.99 F
4.57
2.06
6.20|
2.27!
1.84
1.91
2.15
2.18]
1.52
1.79:
1.4 9 1
5 .9 8 1
7.30
116.06
-1.32
3.13
14.26
10.88
2.38
1.68
1.37 j
1.28
1.28
8.92
6.59
5.95!
5.33;
5.83
6.27:
6 29
5.73
5.04
5.95
5.85
6.46
6.67
4.25!
4.63:
2.13
6.32
2.361
1.121
1.23
2.15
2.33
1.58
1.851
1.61
6.21
7 40'
118.05;
1.99|
0.95 1
1.69
1.32
1.25 I
1.28!
8.57!
6.19
5.76
5.11
5.89
6.24
6.18
5.57
4.98
5.88
5.79
6.14
6.69
4.13
4.68
2.07
6.15
2.28
1.92
1.89
2.15
2.27
1.48
1.77
1.44
5.71
7.18
116.76
-1.29
1.96
1.60 I
1.29!
l.2 2 |
1.24
8.21
6 I0 |
5.58
5.04
5.40
6.04
5.86
5.28
4.78
5.58
5.53
5.84
6.33
3.93
4.55
2.02
5.91
2.12
1.73
1.80
2.04
2.19
1.40
1.69
1.47
5.46
6.54
111.77
-4.99
1.35
inches
inches
inches
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
1.59
1.32
1.22
1.22
8.46
6.12
5.49
5.25
5.43
6.02
5.87
5.24
4.69
5.49
5.26
6.05
6.66
4.04
4.62
194
6.08
2.45
2.00
1.79
2.05
2.44
1.39
1.99
1.34
5.27
6.76
1.62
1.28
1.24
1.25
8.33
6.16
5.64
5.08
5.50
6.06
5.93
5.42
4.77
5.58
5.60
5.89
6.37
3.93
4.47
2.10
5.77
2.29
1.78
1.83
2.02
2.17
1.47
1.70
1.42
6.93
11.31
113.51
1.73
0.83
112.65
-0.85
1.39
117
T ab le 3 5 .
In ch es o f w ater storage in the M id d le ben ch - center tube.
C a p p in g M a te r ia ls
D ate
!5-21-96 |6-24-96 7-22-96 !8-15-96 !9-24-96 110-29-96 i 12-10-96 !1-21-97 4-9-97
D ep th
In c re m e n t (ft) ; L ithology
0.25 - 0.75
I This zone is under construction.
0.75 - 1.25
(This zone is under construction.
I
I . . . . . . . . . . . . . . . . . . . . I. . . . . . . . . . . . . . . . . . . . I
1.25 - 1.75
j topsoil
0.91
1.05
0.59
0.51
0.79
0 69:
0.73
1.24
1.37
1 .7 5 -2 .2 5
j oxidized waste rock
1.32
1.40
1.381
1.19
1.47
1.40
1.36!
1.53
1.59
2.25 - 2.75
j oxidized waste rock
1.05
1.14
0.97
0.93
1.02
0.95
0.93
0.97
1.00
2.75 - 3.25
!oxidized waste rock
1.14
1.39
1.0 7 1
1.04
1.12|
1.0 2 1
0.99
1.07
1.15
325 - 3.75
!oxidized waste rock
1.32
1.44
1.19
1.14
1.34
1.15
1.10
1.15
1.23
f3.75 - 4.25
!oxidized waste rock
1.98
1.91
1.83i
1.74
1.791
1.68
1.801
1.64
1.54
4.25 - 4.75
j Emmerson shale
2.14
2.21
2.181
2.19
2.201
2.22
2.21
2.15
2.12
4.75 - 5.25
j Emmerson shale
2.26
2.30
2.35
2.36
2 .3 4 |
2.33|
2.36
2J31
2.27
5.25 - 5.75
I Emmcrson shale
2.04
2.11
2.16
2.12
2.18
2.211
2.17
2.15
2.13
5.75 - 6.50
jEmmerson shale
2.02
2.05
2.01
2.06
2.04
2.06
2.08
2.04
2.03
T o tal
16.33
16.87
15.71
15.35
16.27
15.68
15.73
16.27
16.42
C h an g e in S to rag e
0.54
-1.17
0.91
-0.35
-0.591
0.05
0.54
0.15
W a s te R o c k
Iwaste rock
!waste rock
!waste rock
Iwaste rock
(waste rock
Iwaste rock
Iwaste rock
iwaste rock
!waste rock
jwaste rock
!waste rock
!waste rock
Iwaste rock
!waste rock
jwaste rock
!waste rock
jwaste rock
(waste rock
!waste rock
jwaste rock
!waste rock
(waste rock
I
1.60
1.25
1.18
1.14
3.36
6.07
6.30
7.11
6.88
6.67
7.10
6.30
2.62
3.73
4.64
5.42
7 .0 2
2.15
27?
1.50
2.83
3.17
2.10
1.65
■
r
6.50 - 7.50
17.50 - 8.50
8.50 - 9.50
9.50 - 10.50
10.50 - 17.50
17.50 - 22.50
22.50 - 27.50
27.50 - 32.50
32.50 - 37.50
37.50 - 42.50
42.50 - 47.50
47.50 - 52.50
52.50 - 57.50
57.50 - 62.50
62.50 - 67.50
67.50 - 72.50
72 .5 0 - 77.50
77.50 - 82.50
82.50 - 87.50
87.50 - 92.50
92.50 - 97.50
97.50 - 102.50
102.50 - 107.50
1 0 7 .5 0 - 112.50
112.50 - 117.50
117.50 - 122.50
122.50 - 127.50
127.50 - 132.50
132.50 - 137.50
137.50 - 142.50
142 .5 0 - 147.50
1 4 7 .5 0 - 152.50
{waste rock
!waste rock
_
jwaste rock
(waste rock
!waste rock
{waste rock
{waste rock
jnative material
!native material
T o tal
I
C h an g e in S to rag e
P re c ip ita tio n (in)
2.17
2.43
14?
1.86
1.88
7.12
6.01
108.38
Total Precipitation =
Total Drainage from W aste Rock =
Total D rainage from C apping M aterials =
1.73
1.29
1.20
1.16
3.40
6.10
6.24
7.18
6.55
6.77
7.06
6.39
2.66
3.57
4.68
5.49
6.99
2.06
2.61
1.52
2.85
3.32
2.24
1.62
2.12
2.05
2.34
3.29
1.82
1.87
7.05
6.11
108.15
-0.22
3.29
1.84!
1.30
1.19
1.14
3.46
6.06
6.13
7.10
6.66j
6.73:
7.14
6.59
2551
3.55
4.67
5.48:
7 .17|
2.22
2.55
1.45
2.67
3.35
2.22
1.67
2.09 i
2.07
2.24
3.25
1.85
1.95
7.05
5.94|
108.33
0.18
1.04
1.86 i
1.30
1.18
1.17
3.44
5.99
6.28
7.17
6.66
6.77
7.33
6.49
2.54
3.57
4.79
5.44
7.07
2.17
2.57
1.44
2.69
3.35
2.33
1.78
2.17
2.05
2.37
3.11
1.91
1.89
7.21
108.87
0.54
0.32
1.95
1.28
1.17
1.15:
3.40
6.03
6.04
7.04
6.47
6.69
7.14:
6.34
2.55
3.61
4.74
5.69
6.89
2.10
2.4 9 |
1.44
2.62
3.38
2.25
1.67
2.14
2.05
2.30
2.79
1.81
1.87
6.95
53)7|
107.10
-1.77
3.13
14.26
6.17
2.11
1.94
1.31
1.19
1.14
3.43
6.09
6.15
7.24
6.47
6.82
7.02
6.57
2.391
3.48!
4.55
5.44
7.06
2.19!
2.621
1.39:
2.64
3.43
2.34,
1.69
2.14!
2.01!
2.30:
2.80j
1.79
1.84;
6.95|
107.46!
0.36'
0.95:
1.87
1.30
1.16
1.13
3.42
6.02
6.14
7.141
6.47|
6.76
7.10
6.17!
2.56
4.09
4.90
5.46
7.06
2.30
2.67
1.46
2.77
3.27
2.20
1.65
2.06
1.97
2.26
2.80
1.77
1.77
6.83
107.73
0.27
1.96
1.90
1.27
1.15
111
3.33
5.79
5.95
6.82
6.39
6.73
7.00
6.21
2.51
3.45
4.39
5.32
6.86
2.12
2.58
1.38
2.47
3.26
2.17
1.57
2.07
1.99
2.13
2.86
1.71
1.05
6.68
103.55
-4.18
1.35
inches
inches
inches
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
1.88
1.24
1.17
111
3.30
5.84
5.99
6.93
6.29
6.56
6.87
6 .3 0
2.33
3.31
4.45
5.42
6.89
2.23
2.69
1.37
2.69
3.19
2.21
1.58
2.00
1.98
2.29
2.71
1.69
1.72
6.55
104.22
0.68
2.22
118
T ab le 36.
Inches o f water storage in the M idd le bench - east tube.
C a p p in g M a teria ls
!b ate
1 5-21-96 ,6-24-96 7-22-96 !8-15-96 9-24-96 ,10-29-96 112-10-96 ii-21-97 14-9-97
Depth
I
I-----------In crem en t (ft) !Lithology
0.25 - 0.75
T h i s z o n e is u n d e r c o n s t r u c t i o n .
0 .7 5 -1 .2 5
{ T h is z o n e i s u n d e r c o n s t r u c t i o n .
1 .2 5 -1 .7 5
! to p s o il
0.68
0.77
0.31
0.17
0.55
0.391
0.67
1.07
0.98
1.75 - 2.25
o x id iz e d w a s te ro c k
1.13
1.22
0.96!
0.85
1.01
0.97!
0.99
1.66
1.59
2.25 - 2.75
(o x id iz e d w a s te r o c k
1.15
1.24
1.06
0.97
1.11
1.021
1.05
1.23
1.25
2.75 - 3.25
[ o x id iz e d w a s te ro c k
1.09
1.0 4 1
1.15
0.98
1.06
1.02
0.99
0.93
0.96
325 - 3.75
!o x id iz e d w a s te ro c k
1.16
1.20
1.10
1.07
1.08
1.06
1.02
1.01
1.04
3.75 - 4.25
I E m m e r s o n s h a le
1.29
1.23
1.20
1.17
1.19
1.161
1.13
1.11
1.22
I E m m e r s o n s h a le
4.25 - 4.75
1.86
1.71
1.66!
1.62
1.61
1.96
1.60
1.30
1.31
4.75 - 5.25
I E n u n e r s o n s h a le
2.12
2.13
2.16
2.16
2.16
2.15,
2.19
2.10
2.09
5.25 - 5.75
I E m m e r s o n s h a le
2.11
2.15
2.14
2.15
2.12
2.14
2.13
2.10
2.07
5.75 - 6.50
IE m m e r s o n s h a l e
3.02
3.09
3.10
3.14
3.11
3.16
3.12
3.05
3.08
6.50 - 7.50
IE m m e r s o n s h a l e
3.21
2.82
2.99
2.91
2.96
3.04
2.90
2.98
3.06
Total
18.76
18.76
17.73
17.20
17.97
18.05
17.79
18.54
18.63
C hange in Storage
-0.01
-1.03
-0.53
0.77
0.08
-0.26
0.74
0.10
W a ste R o ck
7.50 - 8.50
8.50 - 9.50
9.50 - 10.50
10 .5 0 -1 7 .5 0
!17.50-22.50
22.50 - 27.50
27.50 - 32.50
32.50 - 37.50
37.50 - 42.50
42.50 - 47.50
47.50 - 52.50
152.50 - 57.50
57.50 - 62.50
62.50 - 67.50
67.50 - 72.50
72.50 - 77.50
77.50 - 82.50
82.50 - 87.50
87.50 - 92.50
92.50 - 97.50
97.50 - 102.50
102.50 - 107.50
107.50 - 112.50
112.50-117.50
117.50- 122.50
122.50 - 127.50
127.50- 132.50
132.50 -137.50
137.50 - 142.50
142.50 -147.50
147.50 -152.50
152.50 - 157.50
157 .50-162.50
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
native material
native material
T otal
C hange in Storage
Precip itatio n (in)
1.34|
1.25
1.19|
8.45
6.26|
6.18
7.23
6.65!
6.06
5.57
4.77
3.31
3.97
3.44
2.91
2.10
1.90
2.48
2.12
1.41
1.49
6.42
2.61
1.72
4.66
2.57
2.69
2.18
1.98
1.12
1.09
2.99
6.03
107.08
Total Precipitation =
Total Drainage from W aste Rock =
Total Drainage from Capping Materials =
1.35
1.26
1.22
8.53
6.25
6.19
7.29
6.87
6.41
5.51
4.80
3.43
4.17
3.92
3.15
2.11
1.97
2.41
2.10
1.50
1.44
6.31
2.59
1.83
4.50
2.45
2.69
2.18
2.17
1.16
1.28
3.32
109.06
1.97
3.29
O eT
1.30
1.22!
8.72
6 .4 1=
6.52;
7.15
6.921
6.421
is o H
4.801
3.33
4.161
4.24!
3.21
2 .2 2 1
1.99
2.57
2.14|
1.59
1.47
6.56
2.72
1.82
4.51
2.47
2.54 i
2.30
2.24
1.22|
1-41
3.33
8.341
111.01
1.95
1.04!
1.37
1.28
1.22
8.69
6.50
6.29
7.24
6.98
6.36
5.48
4.87
3.22
4.13
4.25
3.14
2.22
1.98
2.49
2.10
1.63
1.53
6.49
2.76
1.82
2.30
2.41
2.42
2.341
2.28
1.21
1.33
3.38
5.34
108.35
-2.65
0.32
1.38
1.26
1.21
8.58
6.38
6.14
7.14
6.70
6.36
5.37
4.73
3.31
4.11
4.26
3.29
2.13
2.05
2.54
2.10
1.53
1.51
6.39
2.67
1.80
2.13
2.31
2.17
2.22
2.25
1.16
1.44
3.47
5.23
106.61
-1.74
3.13
14.26
10.13
1.83
1.36
1.27
1.20
8.51
6.34
6.24
7.00
6.75
6.21
5.35
4.661
3.27!
4.04;
4.33
3.30
2.14
1.91
2.49
2.11
1.50
1.49
6.39
2.66
1.67
2.09
2.19
2.07
2.08
2.17
1.08
1.35
105.22
-1.39
0.95
1.37
1.27
1.22
8.68
6.31
6.35
7.05
6.75
6.38
5.31
4.73
3.28
3.98
4.42
3.20
2.10
1.93
2.48
2.04
1.59
1.47
6.47
2.74
1.72
2.10
2.12
2.21
1.95
2.10
1.22
1.37
3.29
5.20
1.34
1.24
1.19
7.90
6.12
6.13
6.97
6.69
6.04
5.03
4.45
3.05
4.07
4.21
3.15
2.07
1.78
2.40
2.04
1.54
1.45
6.22
2.58
1.64
1.98
2.12
2.03
1.80
1.91
1.15
1.27
3.29
105.91
0.69
1.96
101.56
-4.35
1.35
inches
inches
inches
Shaded cells indicate volumetric water content is above the critical value at which downward
drainage will occur in response to gravity.
1.35$
1.25
1.18
8.18
6.09
6.15
7.14
7.00
6.65
5.69
4.83
3.37
3.85
4.17
3.19
2.02
1.78
2.43
2.15
1.60
1.42
6.13
2.67
1.68
1.98
2.11
2.10
1.85
1.66
1.11
1.27
3.02
104.05
2.49
2.22
1 19
T ab le 37.
In ch es o f w ater storage in the T op bench - w est tube.
Capping Materials
D a te
(5 -2 1 -9 6
1 6 -2 4 -9 6
7 -2 2 -9 6
8 -1 5 -9 6
1 9 -2 4 - 9 6
I)(_2 9 9 - j i 2 . i o . 9 6 [ , . 2 1 - 9 7
!4 -9 -9 7
D ep th
In c r e m e n t (ft)
! L i t h o lo g y
0 .2 5 - 0 .7 5
!This zone is under construction
0 . 7 5 - 1 .2 5
i topsoil
1 .2 5 - 1 .7 5
oxidized waste rock
1 .7 5 - 2 .2 5
i oxidized waste rock
2 .2 5 - 2 .7 5
!oxidized waste rock
(1.96
1 .0 2
0 .4 9
0 .4 3
1 .0 6
0 .7 2
0 .7 1
0 .6 8
1 .1 2
1 .0 5
1 .0 5
1 .1 4
1 .1 0
1 .1 4 ;
1 .1 6
1 .1 2
1 .201
1.21
1 .1 6
1 .1 8
1 .1 9
1 .1 9
1 .1 5
1 .1 6
1 .1 7
1 .3 0
1 .3 0
1 .2 7
1 .2 7
1 .2 7
1 .2 7
1.21
0 .4 5
1 .2 2
1 .3 5
2 . 7 5 - 3 .2 5
Ioxidized waste rock
1 .2 3
1 .2 8
1.21
1 .2 7
1 .2 5
1 .2 2
1 .1 8
1 .1 7
1 .2 3
3 2 5 - 3 .7 5
!oxidized waste rock
1 .2 0
1 .2 3
1 .1 9
1 .2 2
1 .2 0
1 .1 9
1 .1 2
1 .1 4
1 .0 9
3 . 7 5 - 4 .2 5
I Eminerson shale
1 .6 6
1 .6 3
1 .5 0
1 .5 6
1 .5 9
1 .4 5
1 .3 8
1 .6 7
4 .2 5 - 4 .7 5
IEmmerson shale
2 .3 8 ?
2 .3 5
2 .2 8
2 .3 8
2 .3 1
2 .3 3
2 .2 0
2 .1 4
4 . 7 5 - 5 .2 5
!Emmerson shale
T o ta l
1 .2 6
”
n o
1 .7 3
1 .8 5
1 .8 9
2 .0 0
1 .6 5
1 .9 4
1 .8 9
1 .8 4
1 .9 5
1 2 .7 9
1 3 .0 0
1 2 .0 4
1 2 .3 7
1 2 .6 7
1 2 .41
1 1 .9 7
1 2 .1 7
1 1 .7 1
I
0 .2 1
- 0 .9 6
0 .3 4
0 .3 0
- 0 .2 6
- 0 .4 3
0 .2 0
- 0 .4 6
C h a n g e in S t o r a g e
Waste Rock
5 .2 5 - 5 .7 5
!waste nick
1 .6 0 1
1 .6 5
1 .7 5
1 .6 9
1 .6 2
1 .6 7
1 .5 9
1 .5 6
1 .6 0 ?
5 .7 5 - 6 .5 0
I waste nick
1 .3 0
1 .3 1
1 .3 5
1 .3 3
1 .2 6
1 .3 0
1 .2 5
1 .2 4
1 .2 2
6 .5 0 - 7 .5 0
I waste nick
1 .6 3 I
1 .7 1
1 .7 1
1 .7 1
1 .6 5
1 .6 9
1 .6 4
1.61
1 .6 0
1 .6 0
1 .6 2
1 .6 1
1 .5 7
1 .6 0
1 .5 3
1 .5 0
1 .5 1
7 . 5 0 - 8 .5 0
!waste nick
1 .5 4 !
8 .5 0 - 9 .5 0
!waste nick
1 .1 9
1 .2 5
1 .3 0
1 .2 9
1 .1 8
1 .2 0
1.21
1 .1 9
1 .2 2
9 . 5 0 - 1 0 .5 0
!waste nick
'IW
1 .0 8
1 .1 2
1 .1 4
1 .0 7
U O
1 .0 8
1 .0 5
1 .0 9
1 0 .5 0 - 1 7 .5 0
iwaste nick
6 .2 3
6 .3 3 i
6 .3 6
6 .6 1
6 .7 6 )
6 .3 4
6 .5 5
6 .2 1
6 .1 3
1 7 .5 0 - 2 2 . 5 0
!waste nick
4 .8 0 |
4 .7 4
4 .9 7
4 .9 9 !
4 .6 6
4 .7 2
4 .6 5
4 .5 2
4 .7 1
2 2 .5 0 - 2 7 .5 0
waste mck
3 .9 6 1
4 .0 6
4 .1 7
4 .2 0
4 .1 4
4 .1 5
3 .9 8
3 .8 2
4 .0 3
2 7 . 5 0 - 3 2 .5 0
waste nick
3 .1 4 1
3 .0 5
3 .0 3
3 .1 9
3 2 .5 0 - 3 7 .5 0
waste nick
4 .4 1 ;
4 .3 2
3 7 . 5 0 - 4 2 .5 0
waste nick
3 .0 9
3 .1 2
2 .9 0
2 .9 1
2 .8 9
4 .4 0
4 .5 6
4 .2 7
4 .2 7
4 .2 1
4 .1 8
4 .2 4
6 .3 9
6 .5 7
6 .5 6
6 .2 9
6 .5 3
6 .1 6
6 .0 0
6 .0 1
4 .6 1
4 .7 0
4J5
4 .5 1
4 .4 2
4 .3 4
4 .4 0
4 2 . 5 0 - 4 7 .5 0
waste nick
4 .3 8
4 .4 4
4 7 . 5 0 - 5 2 .5 0
waste nick
4 .6 2
4 .6 7
4 .7 5
4 .7 3
4 .5 2
4 .5 5
4 .5 4
4 .3 2
4 .3 6
5 2 .5 0 - 5 7 .5 0
waste nick
5 .1 4
5 .2 3
5 .3 2
5 .3 2
4 .9 8
5 .0 1
4 .8 5
4 .9 0
4 .8 2
5 7 . 5 0 - 6 2 .5 0
waste mck
5 .3 7
5 .3 4
5 .3 6
5 .5 5
5 .4 2
5 .3 4
5 .2 3
5 .0 8
5 .2 1
6 2 . 5 0 - 6 7 .5 0
waste nick
4 .2 8
4 .1 4
4 .1 7
4 .1 9
3 .9 8
3 .9 7
3 .9 1
3 .8 6
3 .7 4
4 .0 8
4 .1 0
4 .1 1
4 .0 9
4 .1 4
3 .8 8
3 .8 7
3 .9 3
6 7 .5 0 - 7 2 .5 0
waste nick
7 2 .5 0 - 7 7 .5 0
waste mck
5 .0 4 1
5 .2 0
5 .3 1
5 .2 2
5 .1 0
4 .9 9
4 .8 6
7 7 . 5 0 - 8 2 .5 0
waste mck
4 .5 1
4 .4 3
4 .4 2
4 .4 8 !
4 .2 8
4 .4 0
4 .2 1
......
4 .7 4
4 .8 6
4 .1 8
4 .1 9
4 .3 7
4 .5 4
4 .5 1
4 .7 3
4 .7 3 1
4 .4 8
4 .4 8
4 .4 2
4 .2 0
waste mck
3 .1 8
3 .1 2
3 .3 3
3 .4 9
3 .1 5
3 .2 6
3 .1 9
3 .0 6
3 .1 5
9 2 .5 0 - 9 7 .5 0
waste mck
3 .3 9
3 .4 0
3 .4 7
3 .4 6 !
3 .2 9
3 .4 4
3 .3 2
3 .1 3
3 .3 1
9 7 . 5 0 - 1 0 2 .5 0
waste mck
3 .6 6 1
3 .7 2
3 .8 3
3 .7 8 :
3 .5 5
3 .6 5
3 .5 6
3 .5 2
3 .5 3
3 .6 4 :
3 .4 6
3 .5 9
3 .6 9
3 .5 3
3 .5 4
3 .4 8
3 .3 4
3 .3 8
3 .7 6
3 .8 2
3 .9 3
3 .6 7
3 .6 5
3 .6 7
3 .4 8
3 .5 0
1 0 2 .5 0 - 1 0 7 .5 0
I
waste mck
I
8 2 . 5 0 - 8 7 .5 0
8 7 J O - 9 2 .5 0
-
3 .6 ()|
1 1 2 .5 0 -1 1 7 .5 0
waste mck
4 .0 0
3 .9 2
4 .0 7
4 .1 0
3 .8 6
3 .8 5
3 .7 6
3 .6 7
3 .6 1
3 .1 0
3 .1 6
3 .2 8
3 .3 3
3 .1 0
3 .2 2
3 .1 7
2 .9 3
3 .0 7
1 1 7 . 5 0 - 1 2 2 .5 0
I
waste mck
I
1 0 7 . 5 0 - 1 1 2 .5 0
1 2 2 .5 0 - 1 2 7 .5 0
waste mck
4 .6 7
4 .5 4
4 .7 8
4 .8 9
4 .5 6
4 .5 9
4 .4 6
4 .2 1
4 .3 3
1 2 7 .5 0 - 1 3 2 .5 0
waste mck
3 .5 6
3 .4 5
3 .5 9
3 .7 4
3 .4 5
3 .4 5
3 .4 1
1 .9 4
3 .4 7
1 3 2 .5 0 - 1 3 7 .5 0
waste mck
4 .7 9
4 .7 6
4 .9 8 '
4 .8 4
4 .7 3
4 .8 9
4 .6 6
4 .6 0
4 .7 8
1 3 7 . 5 0 - 1 4 2 .5 0
waste mck
6 .0 6
5 .9 7
6 .1 5 ]
6 .2 1
6 .0 1
6 .1 4
5 .9 1
5 .7 1
5 .7 1
1 4 2 .5 0 - 1 4 7 .5 0
waste mck
5 .0 7
5 .8 9
5 .4 0
5 .3 1
5 .2 0
5 .2 0
1 4 7 .5 0 - 1 5 2 .5 0
jw aste rock
4 .8 3
4 .6 7
4 .9 3
4 .8 8
4 .7 4
4 .6 7
1 5 2 .5 0 - 1 5 7 .5 0
waste mck
4 .5 7
4 .6 6
4 .7 4
4 .7 0
4 .6 4
2 .7 5
2 .7 2
2 .7 8
2 .7 8
2 .8 5
503
4 .9 0
5 .0 3
6 .0 7
4 .3 8
4 .6 4
4 .6 9
4 .5 2
4 .3 5
4 .5 1
2 .6 9
2 .6 4
2 .5 9
2 .6 5
“
1 5 7 . 5 0 - 1 6 2 .5 0
I
I
1 6 2 .5 0 - 1 6 7 .5 0
iwaste nick
1 .1 6
1 .1 3
1 .1 3
1.21
1 .1 5
1 .0 1
1 .0 7
1 .0 6
1 .1 5
1 6 7 .5 0 - 1 7 2 .5 0
waste mck
i.28
1 .2 9
1 .3 4
1 .2 7
1 .2 6
1 .3 4
1 .2 5
1 .1 8
1 .1 8
1 7 2 . 5 0 - 1 7 7 .5 0
fwaste m dt
OKI
0 .7 7
0 .7 5
0 .7 7
0 .7 0
0 .6 7
0 .7 0
0 .6 0
0 .6 3
1 7 7 .5 0 - 1 8 2 .5 0
waste mck
1 .0 2
0 .9 3
0 .9 5
0 .9 8
0 .9 3
0 .9 5
0 .9 7
0 .9 0
0 .8 8
1 8 2 . 5 0 - 1 8 7 .5 0
waste mck
2 .1 0
1 .8 8
2 .0 4
2 .0 4
1 .9 7
2 .0 3
1 .9 9
1 .7 8
1 .8 8
1 8 7 .5 0 - 1 9 2 .5 0
waste mck
2 .1 8
2 .0 9
2 .2 0
2 .2 1
2 .0 7
2 .1 8
2 .0 8
1 .9 2
2 .0 2
1 9 2 .5 0 - 1 9 7 .5 0
!waste mck
3 .9 8
3 .7 9
3 .9 2
3 .9 0
3 .7 4
3 .8 4
1 9 7 .5 0 - 2 0 2 . 5 0
!waste nick
4 .5 2
4 .4 2
4 .7 3
4 .5 9
4 .5 1
4 .5 0
1 5 7 .3 8
5 7 .0 8
1 6 1 .1 6
1 6 2 .1 7
1 5 5 .2 0
1 5 6 .7 2
- 0 .3 0
4 .0 8
1.01
- 6 .9 7
1 .5 1
3 .2 9
1 .0 4
0 .3 2
3 .1 3
0 .9 5
T o ta l
C h a n g e in S t o r a g e
P r e c ip it a t io n (in )
T u m i P re c ip ita tio n =
1 4 .2 6
in c h e s
T o ta l D ra in a g e fro m W a s te R o c k =
1 7 .6 5
in c h e s
T o ta l D ra in a g e fro n t C a p p in g M a te ria ls =
2 .1 1
3 .8 2
3 .7 2
3 .7 6
4 .1 8
4 .3 7
1 5 3 .8 1
1 4 6 .3 4
1 5 0 .8 0
- 2 .9 0
- 7 .4 8
4 .4 7
1 .9 6
1 .3 5
2 .2 2
- 4 .3 8 1
in c h e s
S h a d e d c e lls in d ic a te v o lu m e tr ic w a te r c o n te n t is a b o v e th e c r itic a l v a lu e a t w h ic h d o w n w a r d
d r a in a g e w ill o c c u r in re s p o n s e to g ra v ity .
120
T ab le 38.
In ch es o f w ater storage in the Top ben ch - east tube.
C a p p in g M a te ria ls
Date
Depth
Increment (ft)
0 .2 5 - 0 .7 5
0 .7 5 - 1.25
5 -2 1 -9 6
6 -2 4 -9 6
7 -2 2 -9 6
8 -1 5 -9 6
9 -2 4 -9 6
1 0 -2 9 -9 6 1 2 -1 0 -9 6 1-21-97
4 -9 -9 7
Lithology
This zone is under construction.
This zone is under construction.
1 .2 5 - 1.75
topsoil
1.14
0 .9 5
0.91
0.89
0.95
0 .8 8
1.00
1.02
1 .7 5 - 2.2 5
oxidized waste rock
1.16
0.95
0 .9 6
0 .9 6
0.96
0.91
0.99
0.97
1.14
2 .2 5 - 2.7 5
oxidized waste rock
0 .9 6
0.93
0.98
0.94
0 .9 3
0 .8 4
0.89
1.45
0.9 8
0.95
1.00
0.96
0.97
1.01
0.98
1.00
0 .9 6
0 .9 6
0.45
0.98
0 .9 6
0.99
1.37
1.01
2 .7 5 - 3.2 5
oxidized waste rock
1.15
1.20
3 2 5 - 3.75
oxidized waste rock
1.26
0 .9 6
3 .7 5 - 4 .2 5
Emmerson shale
2.25
1.82
1.77
1.75
1.68
4 .2 5 - 4 .7 5
Emmerson shale
2.65
2.45
4 .7 5 - 5 .2 5
Emmcrson shale
2.3 9
2.2 0
2.27
2.53
2.29
2.38
2.22
1.51
2.39
2 .2 4
2 .2 7
2.17
2.21
11.24
-1.93
11.32
0.08
11.31
-0 .0 2
11.08
-0.22
10.79
-0 .3 0
10.53
-0 .2 6
10.78
0.26
12.05
1.27
2 .1 2
2.3 6
Total
Change in Storaf ;e
13.17
1.62
1.49
2 .4 0
2.29
1.55
2 .3 6
W a s te R o ck
5 .2 5 - 5.7 5
waste rock
1.94
1.90
2 .0 4
2.11
2 .0 6
2.03
waste rock
1.38
1.33
1.32
1.36
1.97
1.29
2 .1 0
5 .7 5 - 6 .5 0
6 .5 0 - 7 .5 0
1.29
1.29
1.23
1.25
waste rock
1.81
1.72
1.71
1.77
1.71
1.70
1.72
1.67
1.67
7 .5 0 - 8.5 0
waste rock
1.60
1.49
1.50
1.53
1.52
1.48
1.49
1.46
1.48
8 .5 0 - 9 .5 0
waste rock
1.45
1.32
1.28
1.31
1.29
1.29
1.25
1.24
1.28
9 .5 0 - 10 .5 0
waste rock
1.30
1.23
1.22
1.23
1.21
1.21
1.20
1.16
1.19
1 0 .5 0 - 17 .5 0
waste rock
5 .9 0
5 .7 6
5.65
6 .1 0
5.72
5.95
6 .0 3
5.74
5 .9 7
1 7 .5 0 - 2 2 .5 0
waste rock
4 .0 0
4.2 7
4.33
4 .3 6
4.37
4 .2 7
4 .2 0
4 .0 6
4 .4 2
2 2 .5 0 - 2 7 .5 0
waste rock
3.6 4
3 .3 4
3.29
3.53
3.47
3 .4 2
3 .4 0
3.25
3 .3 2
4 .9 7
2 7 .5 0 - 3 2 .5 0
waste rock
5 .2 9
5 .1 5
5 .1 2
5.38
5.13
5 .2 2
5 .1 9
5 .1 6
3 2 .5 0 - 3 7 .5 0
waste rock
3.4 2
3 .5 7
3.62
3.75
3.63
3 .6 5
3.73
3.57
3 .7 4
3 7 .5 0 - 4 2 .5 0
waste rock
6.6 9
6.23
6.35
6.41
6 .3 0
7 .0 9
7.15
6.83
7 .0 7
4 2 .5 0 - 4 7 .5 0
waste rock
5.6 2
5.55
5 .4 0
5 .9 4
5.55
5.48
5.37
5.49
5 .7 2
4 7 .5 0 - 5 2 .5 0
waste rock
4 .4 3
4 .5 5
4 .5 4
4 .6 0
4.55
4 .6 6
waste rock
6 .4 0
6.09
6.21
4 .7 2
6 4 2"
4 .4 3
5 2 .5 0 - 5 7 .5 0
4 .5 9
6 .5 4
5 7 .5 0 - 6 2 .5 0
waste rock
4 .1 4
4 .3 9
4.37
4 .5 7
4.49
6 2 .5 0 - 6 7 .5 0
waste rock
3.96
4 .2 2
waste rock
4 .0 0
5 .0 0
4 .0 2
6 7 .5 0 - 7 2 .5 0
5 .0 6
4 .9 6
5 .2 6
4.13
5.04
3 .9 3
3.78
3 .7 7
4 .0 4
3.78
3 .8 4
6 .1 0
6 .0 5
5.99
6.38
6.37
6.47
7 2 .5 0 - 7 7 .5 0
waste rock
7 7 .5 0 - 8 2 .5 0
waste rock
.
6 .1 8
6 .1 9
5.99
6.11
4 .1 9
4 .0 4
4 .3 9
4 .2 4
4 .2 6
4 .2 2
4.13
4 .2 5
4 .9 8
5 .0 6
4 .8 4
5.01
3.73
3.74
6 .2 2
5.87
382
6 .0 4
8 2 .5 0 - 8 7 .5 0
waste rock
2 .4 2
2 .4 6
2 .4 4
2.46
2.47
2.49
2.33
2.29
2.47
8 7 .5 0 - 9 2 .5 0
waste rock
3 .7 7
3.58
3.64
3.81
3.68
3 .6 9
3 .7 2
3 .5 4
3.57
3.83
3.51
4 .0 3
9 2 .5 0 - 9 7 .5 0
waste rock
4 .0 0
3.95
4 .0 4
4.13
4.16
4 .1 6
3 .9 9
9 7 .5 0 - 1 0 2 .5 0
waste rock
3.81
3.56
3.65
3.78
3.69
3 .7 0
1 0 2 .5 0 - 1 0 7 .5 0
waste rock
3 .3 8
3.22
3.25
3.39
3.28
3.31
3 .6 7
3.29
3.12
3 .6 0
3.17
1 0 7 .5 0 - 1 1 2 .5 0
waste rock
4 .4 0
4 .2 9
4 .3 3
4 .6 2
4.41
4 .3 7
4 .4 7
4.37
4 .4 2
1 1 2 .5 0 - 1 1 7 .5 0
waste rock
4 .0 9
3.97
3.95
4 .1 0
3.84
4 .0 7
3 .9 0
3.83
5 .1 0
388
5 .1 4
1 1 7 .5 0 - 1 2 2 .5 0
waste rock
5 .3 0
5 .1 7
5.06
5 .3 9
5.12
5 .2 2
5.21
1 2 2 .5 0 - 1 2 7 .5 0
waste rock
3 .5 6
3.48
3.48
3 .5 2
3.42
3 .3 6
3 .4 4
3.30
3.51
1 2 7 .5 0 - 1 3 2 .5 0
1 3 2 .5 0 - 137 .5 0
waste rock
5 .3 5
5.11
5.18
5.11
5 .1 9
5.07
1 3 7 .5 0 - 1 4 2 .5 0
waste rock
5.1 9
5.4 2
5.61
1.67
5 .3 2
5 .2 2
5 .5 9
5.40
5.41
5.17
waste rock
5.12
5.27
5.41
5 .7 8
5 .5 6
5 .5 6
5 .3 6
5 .1 6
5 .3 9
5 .0 6
5.47
Shaded cells indicate volumetric w ater content is above the critical value at w hich dow nw ard
drainage will occur in response to gravity.
121
Table
38
continued.
|Date
Depth
Increment (ft)
142.50 - 147.50
147.50 - 152.50
152.50 - 157.50
157.50 - 162.50
162.50 - 167.50
167.50 - 172.50
172.50 - 177.50
177.50 - 182.50
182.50 -187.50
187.50 - 192.50
192.50 - 197.50
197.50 - 202.50
202.50 - 207.50
207.50 - 212.50
212.50 - 217.50
217.50 - 222.50
!waste rock
2 2 2 .5 0 - 2 2 7 .5 0
iwaste rock
5-21-96
6-24-96
7-22-96
8-15-96
9-24-96
10-29-96 12-10-96 1-21-97
4-9-97
!Lithology
jwaste rock
!waste mck
!waste rock
!waste rock
!waste rock
Iwaste rock
|waste mck
jwaste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
227.50 - 232.50 |waste rock
2 3 2 .5 0 - 2 3 7 .5 0
In ch es o f w ater stora g e in the T op bench - east tube.
!waste rock
237.50 - 242.50
242.50 - 247.50
247.50 - 252.50
252.50 - 257.50
257.50 - 262.50
262.50 - 267.50
267.50 - 272.50
272.50 - 277.50
277.50 - 282.50
;waste rock
jwaste rock
1282.50 - 2 8 7 .5 0
!waste rock
!waste rock
waste rock
waste rock
waste rock
waste rock
waste rock
iwaste rock
287.50 - 292.50 !waste rock
292.50 - 297.50 waste rock
297.50 - 301.50 waste rock
301.50 - 303.00 !waste rock
303.00 - 305.00 !native material
305.00 - 307.00 !native material
307.00 - 309.00 !native material
309.00 - 311.00 !native material
311.00 - 313.00 !native material
313.00 - 315.00 !native material
Total
Change in Storage
Precipitation
4.61
4.07
1.80
1.05
1.01
0.93
1.68
3.94
4.11
4.90
6.01
2.66
2.74
2.59
1.67
1.92j
2.06
1.49
1.70
1.65
1.67
1.86
2.02
2.02
2.26
2.63
2.35
1.91
1.81
2.14
2.19
2.28
2.81
5.29
5.66
■ 6.18
7.44
209.44
Total Precipitation =
Total Drainage from Waste Rock =
Total Drainage from Capping Materials =
4.34
4.05
1.78
1.03
0.91
0.92
1.65
3.91
3.89
4.85
6.01
2.50
2.55
2.49
1.57
1.96
1.93
1.52
1.62
1.54
1.61
1.80
2.03
2.03
2.26
2.55
2.32
1.83
1.73
2.12
2.07
2.30
2.70
4.80
5.37
6.13
6.90
204.58
-4.86
3.29
4.40
3.95
1.79
1.02
0.93
0.87
1.65
3.85
3.98
4.85
5.91
2.40
2.65
2.53
1.62
1.98
1.96
1.49
1.66
1.51
1.67
1.76
1.98
2.08
2.25
2.53
2.33
1.85
1.74
2.04
2.13
2.29
2.65
5.03
5.43
6.19
6.82
6.84
3.48
204.55
-0.03
1.04
4.63
4.13
1.99
1.09
1.00
0.96
1.88
4.09
4.29
4.96
6.25
2.58
2.76
2.64
1.70
2.16
2.01
1.59
1.68
1.62
1.65
1.87
2.08
2.13
2.32
2.69
2.43
1.87
1.79
2.06
2.22
2.41
2.97
5.16
5.70
6.40
7.09
6.99
6.40
214.67
10.12
0.32
4.48
4.00
1.84
1.07
1.04
0.95
1.73
3.92
4.10
4.67
6.07
2.47
2.68
2.58
1.59
1.98
3.67
1.50
1.70
1.53
1.62
1.76
1.98
1.99
2.22
2.51
2.29
1.83
1.76
2.02
2.08
2.27
2.73
4.82
5.59
6.04
6.76
6.66
6.04
208.21
-6.46
3.13
4.51
4.01
1.82
1.10
0.89
0.90
1.74
4.02
3.96
4.91
6.07
2.67
2.72
2.52
1.63
1.32
2.08
1.55
1.58
1.52
1.63
1.91
2.11
2.07
2.19
2.60
2.35
1.88
1.80
1.96
2.16
2.30
2.93
5.11
5.61
6.24
7.19
5.61
204.91
-3.30
0.95
4.43
4.17
1.84
1.03
1.02
0.98
1.74
4.05
3.99
4.88
5.97
2.51
2.65
2.56
1.65
1.98
2.01
1.54
1.71
1.57
1.69
1.80
2.05
2.04
2.16
2.49
2.31
1.95
1.78
2.06
2.17
2.33
2.76
5.12
5.57
6.15
6.54
208.50
3.58
1.96
4.36
3.82
1.65
1.03
0.84
0.86
1.61
3.88
3.96
4.89
5.87
2.46
2.57
2.47
1.57
1.90
1.91
2.11
1.60
1.49
1.59
1.70
1.97
1.97
2.17
2.45
2.30
1.84
1.67
1.94
2.04
2.19
2.69
4.90
5.33
5.91
6.42
202.16
-6.33
1.35
14.26 inches
20.97 inches
2.72 inches
Shaded cells indicate volum etric w ater content is above the critical value at which dow nw ard
drainage will occur in response to gravity.
4.35
3.96
1.87
0.97
0.96
0.86
1.70
3.96
4.00
4.75
5.89
2.46
2.61
2.48
1.63
1.99
1.89
1.51
1.73
1.57
1.69
1.71
2.10
1.96
2.23
2.54
2.27
1.90
1.75
2.02
2.10
2.18
2.82
5.09
5.44
6.11
6.99
206.17
4.00
2 .2 2
122
T able 39.
M onthly chan ges in water storage in the capping materials on the low er bench o f the
M ill G ulch w aste rock repository.
W est Tube
______________ !M onth_________ U une _ _ July_______[August
Septem be r O ctober
D ecember {January
M arch
April
D epth
In crem en t (ft) {Lithology_______;______________ _________________M onthly Change in Water Storage (inches)
0.25 - 0.75
This zone is under construction.
0.75 -1 .2 5
This zone is under construction.
I
1.25 -1 .7 5
This zone is under construction.
I
j
I
|
I
1.75 - 2.25
oxidized waste rock
0.32
-0.21
-0.04
OlOl
-0.03
0.02
0.63
0 .0 2 |'
2.25 - 2.75
oxidized waste rock
0.18
-0.20
-0.02|
-0.01
0.01
-0.01
0.17
0.01
2.75 - 3.25
oxidized waste rock
0.14
-0.21
0.00
0.031
0.01
-0.03 i
0.02
0.121“
325 - 3.75
oxidized waste rock
0.25
-0.26
-0.01
0.021
-0.01
-0.01
-0.02
0.04
oxidized waste rock
3.75 - 4.25
-0.01
OlOi
-0 2 1
-0.05!
-0.02
0.11
-0.07!
-0.04
Emmerson shale
4.25 - 4.75
0.01
0.03
o.oTp -0.07 <
0.05
-0.02
-0.02
0.00!
4.75 - 5.25
Emmerson shale
-0.01
0.01
-0.021
-0.05 i
0.04
0.02
-0.03
-0.04]
Emmcrson shale
5.25 - 5.75
0.03
0.01
-0.07;
-0.011
0.06
-0.0.3
0.07
-0.04|
5.75 - 6.50
IEmnierson shale
0.12
0.03
-0.37
0.27;
0.11
Oitr
-0.0.3
-0.08 i
T otal C hange in Storage
1.03
-1.08
-0.41 j
0.221
0.23
0.24
0.62
-0.01!
-0.04
0.02
-0.09
0.00
0.01
0.01
0.03
-0 .0 1
0.06
-0.02
C enter Tube
M onth
Ju n e
July
August
Septem ber ;O ctober
D ecember J a n u a ry
IM arch
April
Depth
In crem en t (ft) Lithology
Monthly Change in Water Storage (inches)
This zone is under construction.
0.25 - 0.75
0.75 -1 .2 5
This zone is under construction.
1.25 - 1.75
This zone is under construction.
oxidized waste rock
1 .7 5 -2 .2 5
0.02
0.13
-0.06
0.06
-0.01;
-0.04
0.24]
0.01
0.27
2.25 - 2.75
oxidized waste rock
-0.03!
0.13
-0.08
-0.04
0.05
00 6 !
-0.03
0.06
0.20
oxidized waste rock
2.75 - 3.25
0.07
-0.08
-0.04
0.03
0.001
-0.04
-0.02 j
0.19
-0.01
325 - 3.75
oxidized waste rock
0.10
-0.08
-0.05
-0.04
0.05
0.52
0.04
-0.51:
0.06
oxidized waste rock
3.75 - 4.25
-0.08
-0.06
0.04
-0.01
-0.12
0.96
-0.90;
0.02
-0.03
Emmerson shale
4.25 - 4.75
-0.01
-0.02
0.07
-0.05
OCOi
-0.16
-0.06
0.02
o m T"
4.75 - 5.25
IEmmcrstin shale
0.01
0.091
-0.04
-0.03
-0.01
-0.07
0.1 o f
-0.05
0.02
5.25 - 5.75
Emmcrson shale
0.04
-0.04
0.03
-0.03
0.01;
0.07
-0.071
-0.02
0.01
5.75 - 6.50
Emmcrson shale
om
0041
-0.01
-0.05
0.01
-0.12
oiol
-0.08
0.10
6.50 - 7.50
iEmmerson shale
0.03
0.15
-0.06
-0.17
0.09;
0.46
-0.48 i
-0.03
-2.02
T otal C hange in Storage
0.42
0.01
-0.26
-0.11
- 0 . 111
1.54
-1.34|
-0.13
-1.17
E ast Tube
M onth
Ju n e
D epth
Increm ent (ft) Lithology
0.25 - 0.75
This zone is under construction.
0.75 -1 .2 5
This zone is under construction.
This zone is under construction.
1.25 -1 .7 5
1.75 - 2.25
oxidized waste rock |
2.25 - 2.75
oxidized waste rock
2.75 - 3.25
oxidized waste rock
3.25 - 3.75
oxidized waste rock
3.75 - 4.25
Emmcrson shale
4.25 - 4.75
Emmerson shale
4.75 - 5.25
Emmcrson shale
5.25 - 5.75
IEmmerson shale
5.75 - 6.50
Emmcrson shale
6.50 - 7.50
Emmcrson shale
T otal C hange in Storage
]
July
August
Septem ber IOcto ier
!December {January
M arch
April
Monthly Change in \ Vater Storage (inches)
I
I
0.30
O il
0.09
0 j3 l
0.04
0.03
0.01
0.05
0.10
0.20
-0.14
-0.11
-0.10
-0.17
-0.22
0.04
0.01
-0.02
OO!)1
0.07
1.06
-0.56
-0.05
-0.01
-0.02
0.01
0.11
0.04
0.03
0.04
0.01
0.13
0.30
Shaded cells indicate negative changes in water storage.
I
I
I
0.12!
0.02!
0.031
0.02 1
-0.09
-0.05
-0.09i
-0.05
-0.121
-0.13
-0.05
-0.03
-0.04
-0.06
0.07:
0.02j
OJXlj
0.031
0.031
-0.0
-0.351
o.ool
I
r
0.00
0.00
0.02
0.03
-0.03
-0.01
-0.01
-0.03
0.07
002
0.06
0.58
0.42
0.00
-0.05
-0.12
-0.04
-0.09
-0.13
-0.25
-0.22
0.10
0.10
0.07
0.05
0.16
0.11
0.00
0.14
0.15
0.21
0.271
0.02
0.08
0.03
-0.05
0.01
-0.02
-0.05
-0.01
0.02
0.06
1.26
0.10
123
T able 40.
M onthly chan ges in water storage in the capping materials on the m iddle bench o f the
M ill G ulch w aste rock repository.
W est T u b e
I
"
!M onth
Ju n e
Depth
Increm ent (ft) jLithology
0.25 - 0.75
!This zone is under construction.
0.75 - 1.25
!This zone is under construction.
1 .2 5 -1 .7 5
Itopsoil
1 .7 5 -2 .2 5
!oxidized waste mck
2.25 - 2.75
!oxidized waste rock
2.75 - 3.25
!oxidized waste rock
3.25 - 3.75
!oxidized waste rock
3.75 - 4.25
(oxidized waste rock
4.25 - 4.75
(oxidized waste rock I
4.75 - 5.25
IEmmcrson shale
5.25 - 5.75
!Emmerson shale
5.75 - 6.50
(Emmcrson shale
T otal C hange in Storage
A ugust
!July
!Septem ber O ctober
(December J a n u a ry
M arch
Monthly Change in Water Storage (inches)
0.00
0.07
0.07
0.06
0.06
0.06
0.10
0.20
0.00
0.16
-0.34 i
-0.241
-0.15
-0 J 9
-0.04
0.06!
-0.10
-0.05
-0.06
-0.02
-0.03
403
0.001
-0.07
0.06!
-0.08
0.30!
0.121
0.09
0.06
007
0.02!
0.06
0.08:
-0.051
0.09!
-1.581
-0.39!
0.83
__
-0.13!
-0.09!
-0.14
_
0.78
-0.09 (
-0.03
-0.041
-0.05
-0.03;
-0.01
-0.04
-0.07!
OCOl
0071
-0.29!
0.35
0.01
-0.03
0.00
-0.02
-0.02
-0.02
-0.02
0.07
-0.04
0.39
o lS
0.18
0.01
-0.01
-0.08
-0.05
-0.10
-0.19
-0.07
0.28
0.58
0.03 i
0.02
0.07
-0.05
0.11
-0.07
-0.05
-0.09:
6 .0 3 P
-0.13
-0 12
C e n te r T u b e
_
___________M o n th _____________J u n e ____
Depth
Increment ift) JLithoIogy________
[jjulv________A u g u st
_______
0 .2 5 - 0 .7 5
(T h is zo n e is under construction
0 .7 5 - 1 .2 5
(T h is zo n e is under construction.
1 .2 5 - 1 .7 5
(topsoil
1 .7 5 - 2 .2 5
!o x id ized w aste rock
I
__
S e p te m b e r O c to b e r
D e c e m b er
January
i A p r il
Monthly Change in Water Storage (inches)
—
- 0 .1 4
-0 .3 2
- 0 .0 8 i
0 .2 8 1
-0 .1 0
0 .0 4
0 .5 1
0 .1 3
0 .0 8
-0 .0 2
-0 .1 9 1
0 .2 8 !
-0 .0 7 1
- 6 .6 .3
0 .1 6
0 .0 6
2 .2 5 - 2 .7 5
(o x id ized w aste rock
J
0 .0 9
- 0 .1 8
- 0 .0 4
0 .1 0!
- 0 .0 7
-0 .0 2
0 .0 3
0 .0 3
2 .7 5 - 3 .2 5
(o x id iz ed w aste rock
I
0 .2 4
-0 .3 2
-0 .0 3 1
0 .0 8 !
-0 .1 0
- 0 .0 3
0 .0 8
0 .0 8
0 .1 2
-0 .2 5
-0 .0 5
0 .1 9 !
- 0 .1 9
-0 .0 5
0 .0 5
0 .0 8
i
- 0 .0 7
-0 .0 8
- 0 .0 9 1
0 .0 5 !
-0 .1 1
0 .1 2
- 0 .1 6
-0 .1 0
shale
0 .0 7
-0 .0 1
0 .0 2 ;
-0 .0 4
0 .0 2
0 .0 2
- 0 .0 6
-0 .0 4
shale
0 .0 4
0 .0 4
0 .6 2 )
- 0 .0 3
-0 .0 1
0 .0 2
-0 .0 2
-0 .0 6
0 .0 3
- 0 .0 4
3 .2 5 - 3 .7 5
(o x id ized w aste rock
3 .7 5 - 4 .2 5
!o x id iz ed w aste rock
4 .2 5 - 4 .7 5
4 .7 5 - 5 .2 5
jE m m crson
jE m m crson
5 .2 5 - 5 .7 5
IE m m crson shale
0 .0 7
0 .0 0
0 .0 4 !
jE m m erson shale
T otal C hange in Storage
0 .0 3
-0 .0 4
0 .0 5 1
-0 .0 2
0 .5 4
-1 .1 7
-0 .3 5 j
0 .9 1
5 .7 5 - 6 .5 0
E ast T ube
I
Depth
Increm ent (ft)
(M onth
(June
0 .7 5 - 1 .2 5
!T h is zo n e is under oinstru ction .
1 .2 5 - 1 . 7 5
(topsoil
1 .7 5 - 2 .2 5
(o x id iz ed w aste rock
2 .2 5
3 .2 5
3 .7 5
4 .2 5
4 .7 5
- 2 .7 5
- 3 .2 5
- 3 .7 5
- 4 .2 5
- 4 .7 5
- 5 .2 5
August
Ju ly
(o x id ized w aste rock
IE m m crson shale
iE m m crson
shale
IE m m crson shale
Septem ber O ctober
-0 .0 2
- 0 .0 4 1
-0 .0 1
0 .0 5
0 .5 4 |
0 .1 5
D ecember J a n u a ry
April
0 .0 9
-0 .4 6
-0 .2 6
0 .0 8
- 0 .1 7
-0 .0 9
0 .1 4 :
- 0 .0 9
0 .0 3
0 .1 9
0 .0 2
j
|
0 .0 6
- 0 .1 1
-0 .0 6
0 .0 8
-0 .0 4
-0 .0 3
- 0 .0 7
0 .0 3
0 .0 4
- 0 .1 0 1
- 0 .0 3
0 .0 1
- 0 .0 3
-0 .0 3
-0 .0 2
0 .0 3
0 .0 6
- 0 .0 9
-0 .0 3
0 .6 2 !
-0 .0 4
-0 .0 3
-6 .0 2
0 .1 1
0 .3 5
- 0 .3 5
- 0 .3 1
0 .0 1
-0 0 1
0 .0 4
- 0 .0 9
-0 .0 1
- 0 .0 3
- 0 . 1 5 ________ 4 0 5
.
4 . 13J_
0 .3 8 !
-0 .1 6
0 .2 8
0 .4 0
- 0 .0 9
0.1 11
0 1 6 1
- 0 .0 4
0 .0 2
0 .6 7
-0 .0 8
-
- 0 .0 4
0 .0 2
0 .0 3
0 .0 0
-0.01
0.01
0.01
5 .2 5 - 5 .7 5
IE m m crson shale
0 .0 4
!E m m crson shale
0.06
6 .5 0 - 7 .5 0
!E m m erson shale
-0 .4 0
0 .1 8
-0.01
- 1 .0 3
[___________
- 0 .5 9 !
- 0 .0 1
0 .0 2
0 .0 9
5 .7 5 - 6 .5 0
T otal C hange In Storage
0 .0 2 !
j
o x id iz e d w aste rock
(o x id ized w aste rock
0 .0 2 !
Monthly Change in Water Storage (inches)
!T his zo n e is under construction.
2 .7 5
-
Lithology
0 .2 5 - 0 .7 5
April
0 04
-0 . 0 1
0.00
j
1
- 0 .0 3
0.02
-0 .0 1
- 0 .0 3
-0 .0 3
0 .0 5
- 0 .0 4
- 0 .0 6
0.02
-0 .0 8
0 .0 5 !
0 .0 8
-0 .1 3
0 .0 8
0 .0 8
-0 .5 3 1
0 .7 7 !
0 .0 8
- 0 .2 6
0 .7 4
0.10
J Shaded cells indicate negative changes in water storage.
-0.28
0.10
0.41
0.46
0.23
0.12
0.02
0.07
-0.01
0.19
1.31
124
Table 4 1.
Monthly changes in water storage in the capping materials on the top of the
Mill Gulch waste rockrepository.
W e st T u b e
!Month
Depth
Increment (ft)
0.25 - 0.75
0.75 - 1.25
1.25 - 1.75
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
3.25 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
August
July
!June
September !October
I
0.63
0.09
0.01,
-0.34
-0.04
0.01
0.00
o x id iz e d w a s te ro c k
I
0.01
0.00
0.04
0.03
-0.02
-0.03
o x id iz e d w a s te ro c k
I
0.05
0.03
0.06
-0.01
-0.02
0.02
-0.03
-0.01
-0.14
E m m e r s o n s h a le
E m m e rs o n s h a le
0.10
0.11
-0.07
-0.35
0.30
0.12
0.21
E m m c r s o n s h a le
0.28
-0.26
Total Change in Storage
-0.06
OOU
0.03
-0.53
-0.07
-0.05
-0.04
-0.06
-0.04
-0.13
-0.07
0.03
-0.96
------------- ------ 0.06
-0.01
o x id iz e d w a s te ro c k
:
to p s o il
o x id iz e d w a s te ro c k
April
Monthly Change in Water Storage (inches)
Lithology
T h i s z o n e is u n d e r c o n s tr u c tio n .
o x id iz e d w a s te ro c k
December January
0.34
0.00
0.00
0.01
-0.02|
0.04
-0.04!
-0.06.
-0.041
-0.07
-0.07
-0.12|
%05|
-0.43 =
-0.23
-0.04
-0.03
ixoTI
ooil
0.01
-0.01
0.02I
0.29
-0.07
-0.05
0.01
0.13
0.06
-0.04
-0.41
-0.04
0.10
0.20
-0.46
E ast T ube
Month
Depth
Increment (ft)
0.25 - 0.75
0.75 -1.25
1.25 - 1.75
1.75 - 2.25
2.25 - 2.75
2.75 - 3.25
3.25 - 3.75
3.75 - 4.25
4.25 - 4.75
4.75 - 5.25
June
—
!August
July
September !October
December !January
April
Monthly Change in Water Storage (inches)
Lithology
T h is z o n e is u n d e r c o n s tru c tio n .
T h is z o n e is u n d e r c o n s tru c tio n .
to p s o il
o x id iz e d w a s te ro c k
o x id iz e d w a s te ro c k
o x id iz e d w a s te ro c k
o x id iz e d w a s te ro c k
E m m e rs o n s h a le
E m m e rs o n s h a le
E m m e r s o n s h a le
Total Change in Storage
-0.19!
-0.2I|
"!m T "
-b.22]
-0.27
-0.42]
-0.26
-0.16
-1.93|
-0.04
-0.02
0.00
0.00
0.02
0.01
0.03
-0.05
0.05
0.06
0.08
-0.02
-0.02
-0.03
-0.03
0.08
0.02
-0.02
Shaded cells indicate negative changes in water storage.
0.06
-0.01
o.dT
-0.03
0.01
-0.07
-0.14
-0.06
-0.22
-0.07
-0.04
-0.01
0.01
-0.03
-0.17,
0.00
0.02
-0.30
0.11
0.07
-0.09
-0.51
0.00
0.11
0.01
olra1
-0.26
0.03
-0.01
6I65I
0.52
0.03
-0.13
-0.11
-0.11
0.26
-0.06
0.16
0.56
0.40
0.03
0.06
0.07
0.04
1.27
MONTANA STATE UNIVERSITY LIBRARIES
3
I Zb2
1 U 2 9 B S /U
O