La Palma Complex Reservoir Rehabilitation &
Pump Station Replacement
Initial Study/Negative Declaration 97
Appendix D
Noise Study
Noise and Vibration Impact Analysis
La Palma Complex Reservoir Rehabilitation and
Pump Station Replacement Project,
Anaheim, California
Prepared for
City of Anaheim
Public Utilities Department, Water Services Division
201 South Anaheim Boulevard, Suite 601
Anaheim, California 92805
Prepared by
Psomas
3 Hutton Centre Drive, Suite 200
Santa Ana, California 92707
T: 714.751.7373
November 2015
www.Psomas.com
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
TABLE OF CONTENTS
Section
Page
1.0
Introduction ..................................................................................................................... 1
2.0
Project Location and Description .................................................................................. 1
3.0
Noise Basics and Terminology ...................................................................................... 2
4.0
5.0
3.1
Decibels and Frequency ........................................................................................ 2
3.2
Perception of Noise and A-Weighting.................................................................... 2
3.3
Noise Propagation ................................................................................................. 3
3.4
Noise Descriptors .................................................................................................. 4
Vibration Basics and Terminology ................................................................................ 5
4.1
Vibration Descriptors ............................................................................................. 5
4.2
Vibration Propagation ............................................................................................ 5
4.3
Vibration Sources and Responses ........................................................................ 5
Applicable Noise and Vibration Standards ................................................................... 6
5.1
Noise Standards .................................................................................................... 6
5.1.1
5.2
6.0
7.0
Vibration standards ............................................................................................... 6
Existing Noise Environment .......................................................................................... 6
6.1
Surrounding and Noise-Sensitive Land Uses ........................................................ 6
6.2
Noise Sources ....................................................................................................... 7
6.3
Existing Noise Levels ............................................................................................ 7
Noise Impact Analysis .................................................................................................... 8
7.1
Thresholds of Significance .................................................................................... 8
7.1.1
7.2
8.0
9.0
City of Anaheim ......................................................................................... 6
Thresholds Addressed in this Noise Study ................................................ 8
Impact Analysis ..................................................................................................... 9
Mitigation Program ....................................................................................................... 17
8.1
Project Design Features ...................................................................................... 17
8.2
Mitigation Measures ............................................................................................ 17
References ..................................................................................................................... 19
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Table of Contents
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
TABLES
Table
1
2
3
4
5
6
7
8
Page
Typical Noise Levels for Common Events ........................................................................ 3
Summary of Noise Level Measurements .......................................................................... 7
Equipment Noise Levels Used For Analysis ................................................................... 10
Estimated Future South and North Property Line Operational Noise Levels .................. 11
Typical Maximum Noise Levels and Duty Cycles for Construction Equipment ............... 12
Guideline Vibration Damage Potential Threshold Criteria ............................................... 15
Guideline Vibration Annoyance Potential Criteria ........................................................... 15
Vibration Levels for Construction Equipment .................................................................. 16
EXHIBITS
Exhibit
1
2
3
4
5
6
7
8
Follows Page
Regional Location ............................................................................................................. 1
Local Vicinity ..................................................................................................................... 1
Existing Site and Noise Measurement Locations .............................................................. 1
Planned Site Improvements .............................................................................................. 1
Typical Vibration Amplitudes ............................................................................................. 5
Proposed Operation Noise Contours .............................................................................. 11
Construction Noise Contours .......................................................................................... 13
Construction Noise Contours With Barrier ...................................................................... 13
ATTACHMENTS
A
B
Noise Monitoring Results
Manufacturer’s Literature
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Table of Contents
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
1.0
INTRODUCTION
The City of Anaheim operates a large water production, storage, and pumping complex at the La
Palma site southeast of the intersection of La Palma Avenue and West Street. The City plans a
major rehabilitation and upgrade of the complex facilities, as described in City of Anaheim La
Palma Complex Master Plan 2015 (Psomas 2015). The purpose of this analysis is to assess the
potential noise and vibration impacts that could occur during construction and subsequent
operation of the upgraded facilities.
2.0
PROJECT LOCATION AND DESCRIPTION
The La Palma Complex is located at 900 West La Palma Avenue (project site) in the City of
Anaheim in Orange County, California. Exhibit 1 shows the location of the project site in a regional
context, while Exhibit 2 shows the location of the site in the local context. Exhibit 3 is an aerial
view of the existing site. Exhibit 4 shows the locations of the planned site improvements.
The proposed project includes the following primary components:
•
Rehabilitation of the existing four-million-gallon (MG) reservoir; the principal activity would
be the removal of the existing roof and replacement with a new roof and roof support
system.
•
Demolition and removal of the existing three-MG reservoir; the reservoir would be filled
with soil from on-site and off-site sources.
•
Construction of a new masonry pump station building with wet wells and installation of four
new vertical turbine pumps. The pump station building would also house pump-control
and electrical equipment as well as ammonia feed equipment.
•
Installation of piping to support the new pump station.
•
Demolition and removal of the existing pump station building and pumps.
•
Construction of a new masonry building for sodium hypochlorite feed equipment.
•
Installation of a new diesel generator.
•
Abandonment and destruction of existing Well 14.
•
Conversion of the existing Well 14 chlorine building to include a restroom and an analyzer
closet.
•
Clearing and removal of trees and brush at the west end of the project site and
construction of a retention basin.
•
General site improvements, including new fencing along parts of the perimeter.
A future Phase 2 may consist of adding a second well, upgrading the pump station, and
construction of off-site pipelines.
Construction is anticipated to be occur over a 14-month period, from June 2016 to August 2017.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
1
Noise Impact Analysis
Lancaster
A L
F O R E S T
Palmdale
138
S
T
14
S
T
Santa
Santa
Clarita
395
£
¤
er
Riv
C la r a
Hesperia
A N G E L E S
118
S
T
San Gabriel
Reservoir
170
S
T
£
¤
101
Pasadena
110
S
T
10
¨
§
Hawthorne
¨
§
Whittier
72
S
T
Project Location
91
S
T
107
S
T
I
C
213
S
T
Carson
19
S
T
Long Beach
Palos Verdes
Buena Park
D:\Projects\2ANA\0152\MXD\Ex_RL_20150904.mxd
C
Riverside
A
71
S
T
Westminster
91
S
T
90
S
T
Yorba Linda
i
l
57
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Corona
Anaheim
Lake
Mathews
241
S
T
5̈
¨
§
15
22
S
T
261
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Santa Ana
Huntington
Beach
N
142
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Los Angeles
Orange
CLEVELAND
55
S
T
39
S
T
E
San Bernardino
Riverside
60
S
T
§
Seal Beach
O
Ontario
605
Downey
105
Rialto
¨
§
West Covina
710
110
210
10
¨
§
§
¨
¨
§
405
30
S
T
¨
§
710
S
T
Los Angeles
¨
§
187
S
T
215
Rancho
Cucamonga
2
S
T
West Hollywood
Santa Monica
¨
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Glendale
134
S
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F
F O R E S T
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N A T I O N A L
¨
§
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C
Victorville
18
S
T
Costa Mesa
1
S
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NATIONAL
241
S
T
Irvine
73
S
T
Mission
Viejo
Rancho
Santa
Margarita
Lake
Elsinore
FOREST
Canyon
Lake
Lake Elsinore
74
S
T
133
S
T
Laguna Beach
San Juan
Capistrano
CAMP
Regional Location
²
5
Exhibit 1
PENDLETON
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
10
Riverside
San Diego
0
10
Miles
PSOMAS
(Rev: 09-04-2015 LEW) R:\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex1_RL_20150904.pdf
W Julianna
Ave
N Villa
N Mayfair Ave
W Victor
Ave
N Leisure Ct
ge Way
W La Palma Ave
tron
N Ci
Pl
eki
ishr
WM
W A u tumn Dr
mme
N Su
t
ring S
W Sp
N Win
t
ter S
N Le
r
nz D
N Red
Drive ond
Ea
o
Project Location
st
D:\Projects\2ANA\0152\MXD\Ex_LV_20150904.mxd
r St
s t St
N We
ll Pl
W Fa
W la
Entrada Cir
W Gr
Local Vicinity
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
²
t
igh S
St
WH
200
100
0
200
Feet
ay
en W
etch
Aerial Source: ESRI 2014
Exhibit 2
PSOMAS
(Rev: 09-17-2015 LEW) R:\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex2_LV_20150904.pdf
N Mayfair Ave
N Leisure Ct
N West St
e Way
N Villag
Well 49
W La Palma Ave
Well 14
2
s t St
N We
3
4 MG Reservoir
6
3 MG Reservoir
St
5
tron
N Ci
s t St
N We
Pump Station
4
WH
t
igh S
1
ishr
W M Pl
eki
W Autum n Dr
r St
D:\Projects\2ANA\0152\MXD\Ex_Noise_Locations_20150904.mxd
mme
N Su
s t St
N We
ll Pl
W Fa
W la Entr
r
nz D
ada C ir
Project Location
t
ring S
N Le
W Sp
Monitoring Location
Existing Site and Noise Measurement Locations
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
²
200
100
0
200
Feet
ter
N Win
St
Aerial Source: ESRI 2014
Exhibit 3
PSOMAS
(Rev: 09-04-2015 LEW) \\irvine1\files\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex3_Noise_Locations_20150904.pdf
D:\Projects\2ANA\0152\Graphics\Ex_Improvements_20150904.ai
Planned Site Improvements
Exhibit 4
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
PSOMAS
Map Not to Scale
(Rev: 09/04/2015 LEW) R:\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex4_Improvements_20150904.pdf
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
3.0
NOISE BASICS AND TERMINOLOGY
Sound is a vibratory disturbance created by a moving or vibrating source and that is capable of
being detected. Noise is defined as sound that is loud, unpleasant, unexpected, or undesired and
may therefore be classified as a more specific group of sounds. The effects of noise on people
can include general annoyance; interference with speech communication; sleep disturbance; and,
in the extreme, hearing impairment.
3.1
DECIBELS AND FREQUENCY
In its most basic form, a continuous sound can be described by its frequency or wavelength (pitch)
and its amplitude (loudness). Frequency is expressed in cycles per second, or hertz. Frequencies
are heard as the pitch or tone of sound. High-pitched sounds produce high frequencies; lowpitched sounds produce low frequencies. Sound pressure levels are described in units called the
decibel (dB).
Decibels are measured on a logarithmic scale that quantifies sound intensity in a manner similar
to the Richter scale used for earthquake magnitudes. Therefore, a doubling of the energy of a
noise source, such as doubling of traffic volume, would increase the noise level by 3 dB; a halving
of the energy would result in a 3 dB decrease.
3.2
PERCEPTION OF NOISE AND A-WEIGHTING
A typical noise environment consists of a base of steady “background” noise that is the sum of
many distant and indistinguishable noise sources. Superimposed on this background noise is the
sound from individual local sources. The local sources can vary from an occasional aircraft or
train passing by, to intermittent periods of sound (such as amplified music), to virtually continuous
noise from, for example, traffic on a major highway.
The human ear is not equally sensitive to all frequencies within the sound spectrum. To
accommodate this phenomenon, the A-scale, which approximates the frequency response of the
average young ear when listening to most ordinary everyday sounds, was devised. When people
make relative judgments of the loudness or annoyance of a sound, their judgments correlate well
with the A-scale sound levels of those sounds. Therefore, the “A-weighted” noise scale is used
for measurements and standards involving the human perception of noise. Noise levels using
A-weighted measurements are written dB(A) or dBA. The most common sounds vary between
40 dBA (very quiet) to 100 dBA (very loud). Normal conversation at 3 feet is approximately 60
dBA, while loud jet engine noises equate to 110 dBA, which can cause serious discomfort. Table 1
shows the relationship of various noise levels to commonly experienced noise events.
Human perception of noise has no simple correlation with acoustical energy. Due to subjective
thresholds of tolerance, the annoyance of a given noise source is perceived very differently from
person to person. Two noise sources do not “sound twice as loud” as one source. As stated
above, a doubling of noise sources results in a noise level increase of 3 dBA. It is widely accepted
that (1) the average healthy ear can barely perceive changes of a 3 dBA increase or decrease;
(2) a change of 5 dBA is readily perceptible; and (3) an increase (decrease) of 10 dBA sounds
twice (half) as loud (Caltrans 2013a). In community situations, noise exposure and changes in
noise levels occur over a number of years, unlike the immediate comparison made in a field study
situation. The generally accepted level at which a change in community noise levels becomes
“barely perceptible” typically occurs at values greater than 3 dBA. Changes of 5 dBA are defined
as “readily perceptible” and 10 dBA is considered twice as loud.
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La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
TABLE 1
TYPICAL NOISE LEVELS FOR COMMON EVENTS
Common Outdoor Activities
Noise Level
(dBA)
110
Common Indoor Activities
Rock Band
Jet Fly-over at 300 m (1,000 ft)
100
Gas Lawn Mower at 1 m (3 ft)
90
Diesel Truck at 15 m (50 ft) at 80 km/hr
(50 mph)
80
Food Blender at 1 m (3 ft); Garbage Disposal at
1 m (3 ft)
Noisy Urban Area, Daytime Gas Lawn Mower
at 30 m (100 ft)
70
Vacuum Cleaner at 3 m (10 ft)
Commercial Area, Heavy Traffic at 90 m
(300 ft)
60
Normal Speech at 1 m (3 ft)
Quiet Urban Daytime
50
Large Business Office, Dishwasher in Next
Room
Quiet Urban Nighttime
40
Theater, Large Conference Room (Background)
Quiet Suburban Nighttime
30
Library
Quiet Rural Nighttime
Lowest Threshold of Human Hearing
20
Bedroom at Night, Concert Hall (Background)
10
Broadcast/Recording Studio
0
Lowest Threshold of Human Hearing
dBA: A-weighted decibels; m: meter; ft: feet; km/hr: kilometers per hour; mph: miles per hour
Source: Caltrans 2013a.
3.3
NOISE PROPAGATION
From the source to the receiver, noise changes both in level and frequency spectrum. The most
obvious is the decrease in noise level as the distance from the source increases. The manner in
which noise reduces with distance depends on many factors.
Geometric Spreading from Point and Line Sources: Sound from a small localized source
(approximating a “point” source) radiates uniformly outward as it travels away from the source in
a spherical pattern. The sound level attenuates or drops off at a rate of 6 dBA for each doubling
of distance (i.e., if the noise level is 70 dBA at 25 feet, it is 64 dBA at 50 feet) for point sources.
The movement of the vehicles makes the source of the sound appear to emanate from a line (line
source) rather than a point when viewed over some time interval. The sound level attenuates or
drops off at a rate of 3 dBA per doubling of distance for line sources.
Ground Absorption: To account for ground-effect attenuation (absorption), two types of site
conditions are commonly used in noise prediction: soft site and hard site conditions. Hard sites
(i.e., sites with a reflective surface between the source and the receiver, such as parking lots or
smooth bodies of water) receive no excess ground attenuation, and the changes in noise levels
with distance (drop-off rate) are simply the geometric spreading of the source. Soft sites are sites
that have an absorptive ground surface (e.g., soft dirt, grass, or scattered bushes and trees) and
receive an excess ground attenuation value of 1.5 dBA per doubling of distance.
Atmospheric Effects: Wind speed will bend the path of sound to “focus” it on the downwind side
and make a “shadow” on the upwind side of the source. At short distances, the wind has a minor
influence on the measured sound level. For longer distances, the wind effect becomes
appreciably greater. Temperature gradients create effects similar to those of wind gradients,
except that they are uniform in all directions from the source. On a sunny day with no wind,
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
temperature decreases with altitude, giving a shadow effect for sound. On a clear night,
temperature may increase with altitude, focusing sound on the ground surface.
Shielding by Natural and Man-Made Features, Noise Barriers, Diffraction, and Reflection:
A large object in the path between a noise source and a receiver can significantly attenuate noise
levels at that receiver location. The amount of attenuation provided by this “shielding” depends
on the size of the object and the frequencies of the noise levels. Natural terrain features (e.g.,
hills and dense woods) and man-made features (e.g., buildings and walls) can significantly alter
noise levels. For a noise barrier to work, it must be high enough and long enough to block the
view from the receiver to a road or to the noise source. Effective noise barriers can reduce noise
levels by up to 15 dBA.
3.4
NOISE DESCRIPTORS
Several rating scales (or noise “metrics”) exist to analyze effects of noise on a community. These
scales include the equivalent noise level (Leq), the community noise equivalent level (CNEL), and
the day-night average sound level (DNL or Ldn). Average noise levels over a period of minutes or
hours are usually expressed as dBA Leq, which is the equivalent noise level for that period of time.
The period of time averaging may be specified; Leq(3) would be a three-hour average. When no
period is specified, a one-hour average is assumed. It is important to understand that noise of
short duration (i.e., substantially less than the averaging period) is averaged into ambient noise
during the period of interest. Thus, a loud noise lasting many seconds or a few minutes may have
minimal effect on the measured sound level averaged over a one-hour period.
Several statistical descriptors are also often used to describe noise, including Lmax, Lmin, and Lx.
Lmax and Lmin are, respectively, the highest and lowest A-weighted sound levels that occur during
a noise event. Lx signifies the noise level that is exceeded x percent of the time; for example, L10
denotes the level that was exceeded 10 percent of the time.
When the noise level of specific noise source is described by the sound pressure level in
decibels, as discussed in Section 3.1, a distance is required as is the decibel level. For example,
the noise level of a motor may be 75 dBA at a distance of 7 meters. Other descriptors may be
used to describe a noise source and are used in this analysis. Sound power level is typically
used to describe air conditioner noise levels. Sound power describes the total sound energy
emitted by a source, also in decibels; sound power does not change with distance. Sones are
typically used to describe fan noise. The sone is a measure of loudness and was developed based
on human judgment of relative loudness.
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
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4.0
VIBRATION BASICS AND TERMINOLOGY
Vibration is the periodic movement of mass over time. Vibration generated by construction activity
has the potential to damage structures. This damage could be structural damage (e.g., cracking
of floor slabs, foundations, columns, beams, or wells) or cosmetic architectural damage (e.g.,
cracked plaster, stucco, or tile).
Ground vibration can be annoying to people. The primary effect of perceptible vibration is often a
concern. However, secondary effects, such as the rattling of a china cabinet, can also occur, even
when vibration levels are well below perception. Any effect (primary perceptible vibration,
secondary effects, or a combination of the two) can lead to annoyance. The degree to which a
person is annoyed depends on the activity in which they are participating at the time of the
disturbance. For example, someone sleeping or reading will be more sensitive than someone who
is running on a treadmill. Reoccurring primary and secondary vibration effects often lead people
to believe that the vibration is damaging their home, although vibration levels are well below
minimum thresholds for damage potential (Caltrans 2013b).
4.1
VIBRATION DESCRIPTORS
Vibration is described in terms of frequency and amplitude and, unlike sound, there is no standard
way of measuring and reporting amplitude. Vibration levels are usually expressed as singlenumber measure of vibration magnitude, in terms of velocity or acceleration, which describes the
severity of the vibration without the frequency variable. The peak particle velocity (ppv) is defined
as the maximum instantaneous positive or negative peak of the vibration signal, usually measured
in inches per second (in/sec). Since it is related to the stresses that are experienced by buildings,
ppv is often used in monitoring blasting vibration and the vibration of heavy construction
equipment. Vibration is also described in decibel units, written as VdB to distinguish from noise
level decibels
The frequency of a vibrating object describes how rapidly it is oscillating. The number of cycles
per second of oscillation is the vibration frequency, which is described in terms of hertz (Hz). The
normal frequency range of most groundborne vibration that can be felt generally starts from a low
frequency of less than 1 Hz to a high of about 200 Hz.
4.2
VIBRATION PROPAGATION
Vibration energy spreads out as it travels through the ground, causing the vibration level to
diminish with distance away from the source. High-frequency vibrations reduce much more rapidly
than low frequencies so that low frequencies tend to dominate the spectrum at large distances
from the source. Discontinuities in the soil strata can also cause diffractions or channeling effects
that affect the propagation of vibration over long distances. When vibration encounters a building,
a ground-to-foundation coupling loss will usually reduce the overall vibration level. However,
under certain circumstances, the ground-to-foundation coupling may also amplify the vibration
level due to structural resonances of the floors and walls.
4.3
VIBRATION SOURCES AND RESPONSES
Construction vibration is generally associated with pile driving and rock blasting. However, large
bulldozers, vibratory compactors, and loaded trucks can cause perceptible vibration levels at
close proximity. Long-term vibration in environmental analysis is usually associated with rail and
transit operations, but can also occur with some machinery applications. Exhibit 5 illustrates
common vibration sources and typical human and structural responses.
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Noise Impact Analysis
D:\Projects\2ANA\0152\Graphics\Ex_Vibration_20150904.ai
Source: WIA et al. 2012
Typical Vibration Amplitudes
Exhibit 5
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
PSOMAS
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La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
5.0
APPLICABLE NOISE AND VIBRATION STANDARDS
5.1
NOISE STANDARDS
Public agencies have established noise guidelines and standards to protect citizens from potential
hearing damage and various other adverse physiological and social effects associated with noise.
The U.S. Environmental Protection Agency (USEPA) offers guidelines for community noise
exposure and recognizes an exterior noise level of 55 decibels day-night level (dB Ldn) as a
general goal to protect the public. The USEPA and other Federal agencies have adopted land
use compatibility guidelines that residential noise exposures of 55 to 65 dB Ldn are acceptable.
The USEPA guideline is not regulatory (EPA 2015a). The State of California Office of Noise
Control has established guidelines for acceptable community noise exposure. For single-family
residential land uses, an outdoor noise level of 60 Ldn is defined as being “normally acceptable”
(Office of Noise Control, California Department of Health).
5.1.1
City of Anaheim
The City of Anaheim regulates noise through Chapter 6.70, Sound Pressure Levels, of the City of
Anaheim’s Municipal Code. Section 6.70.010 prohibits sound at a property line from exceeding
60 dBA “for extended periods” of time.
Sound created by construction or building repair of any premises in the City is exempt from the
applications of this chapter between the hours of 7:00 AM and 7:00 PM.
Sound created by governmental units or their contractors are exempt from the applications of
Chapter 6.70.
5.2
VIBRATION STANDARDS
There are no adopted federal, State, or City of Anaheim vibration standards applicable to the
proposed project. Recommended vibration impact criteria are discussed in Section 8.2 (see
Threshold 4).
6.0
EXISTING NOISE ENVIRONMENT
6.1
SURROUNDING AND NOISE-SENSITIVE LAND USES
The project site is located south of West La Palma Avenue and east of North West Street.
Noise-sensitive locations include areas where an excessive amount of noise would interfere with
normal operations or activities and where a high degree of noise control may be necessary.
Examples include schools, hospitals, and residential areas. Recreational areas may be
considered noise-sensitive where quiet and solitude may be an important aspect of the specific
recreational experience. Commercial land uses are generally not considered noise-sensitive.
The project site is surrounded by commercial uses to the north and east and residential uses to
the south and west (Exhibits 2 and 3). The project site is separated from the commercial
development on the north by the Carbon Creek Channel. The single-family residences to the
south face West Autumn Drive with rear yards adjacent to the project site’s southern property line.
The southern property line has a chain-link fence with heavy plant growth that provides essentially
complete visual separation between the residences and the project site. The single-family
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
residences to the west are on the west side of North West Street, approximately 60 feet from the
project site’s west property line. The fence at the single-family homes is painted wrought iron and
does not function as a visual or noise barrier.
6.2
NOISE SOURCES
The primary off-site noise sources audible on the project site include traffic on La Palma Avenue
and West Street. Other off-site sources include occasional aircraft overflights and typical
residential noise (e.g., air conditioners and barking dogs) from the homes south of the project site.
The primary on-site noise sources are the Well 49 pump and motor and the pumps in the pump
station. There are three electric motor-driven pumps and two natural gas standby pumps.
6.3
EXISTING NOISE LEVELS
Psomas conducted a noise survey at the project site on August 27, 2015. Noise level
measurements were taken using a Larson Davis Laboratories Model 831 integrating sound level
meter (LD 831). The LD 831 sound level meter and microphone were mounted on a tripod,
approximately five feet above the ground and equipped with a windscreen during all
measurements. The LD 831 was calibrated before and after use with a Larson Davis Model
CAL200 acoustical calibrator to ensure that the measurements would be accurate. The sound
level meter was programmed to record noise levels in “slow” mode in A-weighted form.
Meteorological conditions during all measurement periods were favorable, with clear skies; the
temperature was approximately 85 to 90 degrees Fahrenheit (°F). There was little or no wind for
most of the measurement period. Noise level measurements were collected at six locations as
described and summarized in Table 2. Noise survey locations are shown on Exhibit 3. The
complete noise monitoring results are included in Attachment A.
TABLE 2
SUMMARY OF NOISE LEVEL MEASUREMENTS
Noise Levels (dBA)
Measurement
Number*
Location
Start Time
(Duration)
Leq
Lmax
Lmin
Primary
Noise Source,
Comment
Vehicles on West St
and La Palma Ave.
Lmax was barking dog.
Measurement stopped
because of barking
dog.
1
Near the southwest
corner of the 4-MG
reservoir, between
the reservoir and the
southern fence.
10.45 AM
(10
minutes)
52
69
41
2
Approximately 6 feet
west of the Well 49
pump and motor.
11:03 AM
(5 minutes)
77
78
75
Well 49 pump and
motor.
51
Leq was approximately
52 dBA with no pump
station pumps running;
Leq was approximately
54 dBA with all 3
pumps running. Noise
spike was from when
the pumps started. The
average Leq was 53
dBA.
3
Approximately 8 feet
from the southern
fence, opposite the
center of the pump
station
11:10 AM
(13
minutes)
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7
61
Noise Impact Analysis
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and Pump Station Replacement
TABLE 2
SUMMARY OF NOISE LEVEL MEASUREMENTS
Noise Levels (dBA)
Measurement
Number*
4
5
6
Location
Near the southeast
corner of the 3-MG
reservoir, between
the reservoir and the
southern fence
Approximately 6 feet
east of the Well 49
pump and motor.
Approximately 50 feet
east of the centerline
of West Street at
single-family
residences.
Start Time
(Duration)
Primary
Noise Source,
Comment
Leq
Lmax
Lmin
11:27 AM
(10
minutes)
49
58
45
Lmax from a vehicle on
La Palma Ave.
11:42 AM
(4 minutes)
83
84
80
Well 49 pump and
motor.
46
Vehicles on West St.
Lmax was from a trash
truck. Church bells
rang at noon.
11:51 AM
(16
minutes)
62
82
dBA: A-weighted decibels; Leq: equivalent noise level; Lmax: maximum noise level; Lmin: minimum noise level; MG: million gallons.
*
See Exhibit 3 for measurement locations.
The purpose of Measurement 3 was to record the noise levels at the southern property line under
maximum existing noise conditions (i.e., with the Well 49 pump and all 3 pump station pumps
running). At the time of the measurement, the windows in the southern wall of the pump station
were open, thus reducing the noise abatement effectiveness of the building. At the start of the
measurement period, the noise level was approximately 52 dBA. The three pumps were started
sequentially; at each of the pump starts, there was a brief spike of approximately 5 dBA. However,
the total noise level increase with all pumps running was approximately 2 dBA.
The Well 49 pump operated at 350 horsepower and was running continuously throughout the
entire measurement period. As shown in Measurements 2 and 5, the Well 49 average noise levels
vary between 77 and 83 dBA at a distance of approximately 6 feet from the motor-pump. It is not
unusual for noise from an electric motor-pump to vary by a few decibels in different directions and
over time. The Well 49 pump does not have any surrounding noise barriers. During well waste
operation, water will be discharged for a short period of time (less than 5 minutes) through the air
gap facility. Based on measurements obtained at a similar facility, the air gap can generate a
sound pressure level of 88 dBA at a distance of 24 feet.
As shown for Measurements 1, 3, and 4, existing average noise levels at the south property line
are 49 to 53 dBA Leq.
7.0
NOISE IMPACT ANALYSIS
7.1
THRESHOLDS OF SIGNIFICANCE
7.1.1
Thresholds Addressed in this Noise Study
According to City of Anaheim Environmental Checklist Form, a project will normally have a
significant adverse environmental impact on noise if it will:
1. Result in a substantial permanent increase in ambient noise levels in the project vicinity
above levels existing without the project.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
2. Result in a substantial temporary or periodic increase in ambient noise levels in the project
vicinity above levels existing without the project.
3. Expose persons to or generate noise levels in excess of standards established in the local
general plan or noise ordinance, or applicable standards of other agencies.
4. Expose persons to or generate excessive groundborne vibration or groundborne noise
levels.
5. For a project located within an airport land use plan (Los Alamitos Armed Forces Reserve
Center or Fullerton Municipal Airport), expose people residing or working in the project
area to excessive noise levels.
6. For a project within the vicinity of a private airstrip, heliport or helistop, expose people
residing or working in the project area to excessive noise levels.
7.2
IMPACT ANALYSIS
Threshold 1
Would the project result in a substantial permanent increase in ambient noise
levels in the project vicinity above levels existing without the project?
The primary continuous noise sources in the proposed project would include the following:
•
Well 49 motor (existing)
•
Pump station pump motors
•
Pump station rooftop 5-ton air conditioner
•
Pump station rooftop 2-horsepower exhaust fan
An additional occasional noise source would be the emergency generator.
Noise source levels for the above-listed equipment used for analysis are shown in Table 3. Noise
source data is provided in various units which are then converted to sound power levels for impact
analysis.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
TABLE 3
EQUIPMENT NOISE LEVELS USED FOR ANALYSIS
Sound Pressure Level
Equipment
Source of data
Sound
Power
Level
Loudness
Sones
dBA
feet
dBA
Note
85
3
93
1
Well 49 motor
Master Plan and
measurements
Pump station pump
motor
US Motors spec
sheet
85
2
Air conditioner
York spec sheet
82
3
Exhaust fan
Twin Cities Fan spec
sheets
88
Diesel generator
Master Plan
85
3
28
4
93
1, 5
dBA: A-weighted decibels
1
2
3
4
5
La Palma Complex Master Plan (Psomas 2015)
Conservative number from US Motors spec sheet.
High estimate; many 5-ton units available with lower sound power levels
High estimate; many 2-horsepower fans are available with lower sone ratings
Includes sound enclosure (PDF NOISE-3)
Future noise levels at the southern property line—generally opposite the existing and proposed
pump stations (i.e., at the closest residential receptors)—were calculated for each piece of
equipment that could be running concurrently for extended periods of time. It should be noted that
neither the Well 49 pump nor the Pump Station pumps run continuously on a 24/7 basis. The
pumps are needed to transfer water to and from the reservoir on a periodic basis, depending on
demand. Equipment noise levels from Table 3 were used, with locations for future equipment
estimated from Exhibit 4. The analysis includes the following assumptions:
•
A sound power level of 85 dBA was assumed for each pump station pump motor.
•
The pump station would be constructed similarly to the existing pump station with concrete
masonry units (CMU) or poured-in-place or precast concrete construction, with minimal
openings to the south and doors on the north.
•
The pump station would be approximately five feet closer to the southern property line
than the existing pump station, as shown in Exhibit 4.
•
A 42-inch-high parapet is required for the pump station roof. The parapet provides at least
5 dBA noise reduction.
A computer noise model, SoundPLAN, was used to predict future operational noise levels and
generate noise contours. SoundPLAN takes a number of significant variables into account,
including source sound power levels; the distance from sources to receivers; the heights of
sources and receivers; barrier effects provided by walls or buildings; and topographical effects.
Input data and assumptions include the following:
•
Well 49 motor with a source height of 6’ and a sound power level of 93 dBA.
•
Diesel generator with a source height of 6’ and a sound power level of 93 dBA.
•
Air conditioner with a source height of 12’ on rooftop and a sound power level of 82 dBA.
•
Exhaust fan with a source height of 12’ on rooftop and a sound power level of 88 dBA.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
•
5 new pump station pump motors with a source height of 6’ and a sound power level of
85 dBA each.
•
Transmission loss of 20 dBA in the pump station building with doors and windows
closed.
The results of the analysis are shown in Table 4 and on Exhibit 6.
TABLE 4
ESTIMATED FUTURE SOUTH AND NORTH PROPERTY
LINE OPERATIONAL NOISE LEVELS
Equipment
Well 49 motor
Distance from
South Property
Line
Noise Level at
South Property Line
Distance from
North Property
Line
Noise Level at
North Property
Line
feet
dBA
feet
dBA
130
49
125
50
Pump station pump
motors
120
30*
210
24*
Air conditioner
120
40
210
36
120
46
210
Exhaust fan
Total Noise Level
52
42
50
dBA: A-weighted decibels
* Assuming 20 dBA transmission loss through the building walls.
The emergency generator would not run for extended periods of time. If the generator was
operated concurrently with all of the equipment in Table 5 operating, the increase in noise level
at the south property line would be less than 1 dBA, and the total noise level would be
approximately 53 dBA. The project noise level at the north property line would be 50 dBA.
The distances from project noise sources to residential receptors adjacent to the southern
property line are greater than those in Table 4. Therefore, noise levels at these receptors would
be less than shown in Table 4. Similarly, the distances from project noise sources to the residential
receptors on West Street would be greater than the distances in Table 4, and project-generated
noise levels at these receptors would be less than shown in Table 4.
Existing noise levels along the southern property line were measured at 49 to 53 dBA Leq with the
Well 49 pump running and the pump station pumps not running. The pump station pumps
increased the noise level by approximately 2 dBA. Future noise levels at the southern property
line, including noise from the proposed rooftop air conditioner and exhaust fan, are estimated to
be approximately 1 dBA less than existing noise levels. The noise level change would not be
perceptible. As shown in Table 4, future noise levels at the southern property line are estimated
to be 50 dBA Leq. As shown on Exhibit 6, future noise levels at the western and eastern property
lines would be less than 45 dBA Leq. The impact would be less than significant. No mitigation is
required.
Threshold 2
Would the project result in a substantial temporary or periodic increase in
ambient noise levels in the project vicinity above levels existing without
the project?
The primary noise sources during typical construction activities are the diesel engines of
construction equipment and the impact noise from operations such as pile driving, blasting, and
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
11
Noise Impact Analysis
N Mayfair Ave
N Leisure Ct
N West St
N Village Way
Project Location
W La Palma Ave
st St
N We
h St
t
ro n S
N Cit
st
N We
St
W Hig
W Autumn
Dr
N Win
t
est S
NW
t
N Su
ter S
D:\Projects\2ANA\0152\MXD\Ex_OperationNoiseContours_20151118.mxd
Pl
eki
ishr
M
W
r St
mme
ll Pl
W Fa
Proposed Operation Noise Contours
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
²
130
65
0
130
Feet
Aerial Source: ESRI 2014
Exhibit 6
PSOMAS
(Rev: 11-18-2015 LEW) R:\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex6_OperationNoiseContours_20151118.pdf
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
jackhammering. The proposed project would not include blasting, but may include vibratory pile
driving. Variation in power is an element in characterizing the noise source level from construction
equipment and is accounted for by describing the full power or maximum noise level and the duty
cycle. The duty cycle is the percent of time that the equipment is operating at full power. Typical
maximum noise levels and duty cycles of representative types of equipment are listed in Table 5.
TABLE 5
TYPICAL MAXIMUM NOISE LEVELS AND DUTY CYCLES
FOR CONSTRUCTION EQUIPMENT
Noise Level
(dBA) at 50 ft
Equipment
Typical Duty
Cycle
Auger Drill Rig
85
20%
Backhoe
80
40%
Chain Saw
85
20%
Compactor (ground)
80
20%
Compressor (air)
80
40%
Concrete Mixer Truck
85
40%
Concrete Pump
82
20%
Concrete Saw
90
20%
Crane (mobile or stationary)
85
20%
Dozer
85
40%
Dump Truck
84
40%
Excavator
85
40%
Front End Loader
80
40%
Generator (25 KVA or less)
70
50%
Generator (more than 25 KVA)
82
50%
Grader
85
40%
Jackhammer
85
20%
Mounted Jackhammer (hoe ram)
90
20%
Paver
85
50%
Pneumatic Tools
85
50%
Pumps
77
50%
Rock Drill
85
20%
Scraper
85
40%
Tractor
84
40%
Vacuum Excavator (vac-truck)
85
40%
Vibratory Concrete Mixer
80
20%
Vibratory Pile Driver
95
20%
dBA: A-weighted decibels; ft: feet; KVA: kilovolt amps
Note:
Machinery equipped with noise-control devices or other noise-reducing design features do not
generate the same level of noise emissions as those shown in this table.
Source: Thalheimer 2000; FHWA 2008
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
12
Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
Construction would occur over a period of approximately 14 months, from June 2016 to
August 2017. Construction activities would not start before 8:00 AM in order to limit the noise
impact to adjacent residences.
During construction, nearby receptors would be exposed to noise levels associated with the
operation of heavy equipment, including excavators, backhoes, forklifts, cranes, and dump trucks.
Noise from this equipment is primarily associated with the diesel engines. Impact noise may also
occur from pavement breaking with jackhammers. Vibratory installation of sheet piles may be
required during construction of the wet wells for the pumps. Construction equipment noise would
not be constant because of the variations of power, cycles, and equipment location.
The SoundPLAN model was used to estimate construction noise levels for a reasonable worstcase noise scenario, which would include the demolition of the 3-MG reservoir. Input data and
assumptions include the following:
•
Three pump station pump motors with a source height of 6 feet and a sound power level
of 85 dBA each.
•
Well 49 motor with a source height of 6 feet and a sound power level of 93 dBA.
•
One backhoe with a source height of 4 feet and a sound power level of 108 dBA.
•
One dozer with a source height of 4 feet and a sound power level of 113 dBA.
•
One jackhammer with a source height of 4 feet and a sound power level of 110 dBA.
•
One dump truck with a source height of 4 feet and a sound power level of 112 dBA.
•
The west side reservoir was modeled as 4 feet high.
•
Transmission loss of 20 dBA in the pump station building with doors and windows
closed.
•
Receiver height of 5 feet above ground.
Noise levels were modeled without and with a barrier around the construction area. A 12-foothigh barrier was modeled. Construction noise contours for these scenarios are shown in
Exhibits 7 and 8.
Exhibit 7 shows the construction noise contours. Without noise abatement, the noise levels on
the southern property line close to the east 3-MG reservoir construction site would be in the range
of 70 to 75 dBA during construction. These noise levels would be intermittent, depending on the
intensity of activity. Temporary noise levels of 70 to 75 dBA during construction are not considered
to be a significant impact. However, to mitigate the construction noise, a 12-foot-high acoustical
barrier is recommended to be erected adjacent to the southern property line; see mitigation
measure (MM) NOISE-1 in Section 8.0 of this report. The noise levels would be reduced to less
than 70 dBA with this barrier, as shown in Exhibit 8.
It is recommended that the noise management practices included in MM NOISE-2 be included in
the project. It is also recommended that residents near the project site be notified of the
construction and provided with a means to report excessive noise, as described in MM NOISE-3.
Pile Installation
Sheet pile installation may be required for wet well excavation and construction. Piles may be
installed with a vibratory pile driver, which produces less noise than an impact pile driver. Pile
installation could occur as close as approximately 75 feet from the property line and adjacent
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
13
Noise Impact Analysis
N Mayfair Ave
N Leisure Ct
N Village Way
Project Location
W La Palma Ave
st St
N We
st
N We
St
W Hig
h St
N Cit
t
ron S
W Autumn
Dr
t
N Win
est S
NW
D:\Projects\2ANA\0152\MXD\Ex_ConstructionNoiseContours_20151118.mxd
Pl
eki
ishr
M
W
ter S
t
N Su
r St
mme
W No
te Ln
rthga
ll Pl
W Fa
Aerial Source: ESRI 2014
Construction Noise Contours
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
²
130
65
0
130
Feet
Exhibit 7
(Rev: 11-18-2015 LEW) R:\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex7_ConstructionNoiseContours_20151118.pdf
N Village Way
N Mayfair Ave
N Leisure Ct
W La Palma Ave
Project Location
st St
N We
Barrier
st
N We
St
W Hig
i Pl
t
ron S
ek
ishr
N Cit
WM
h St
Dr
N Win
st St
N We
D:\Projects\2ANA\0152\MXD\Ex_ConstructionNoiseContourBarrier_20151117.mxd
W Autumn
ter S
t
N Su
W No
te Ln
rthga
r St
mme
ll Pl
W Fa
Aerial Source: ESRI 2014
Construction Noise Contours With Barrier
La Palma Complex Reservoir Rehabilitation and Pump Station Replacement Project
²
130
65
0
130
Feet
Exhibit 8
PSOMAS
(Rev: 11-18-2015 LEW) R:\Projects\2ANA\2ANA015200\Graphics\Noise_Report\Ex8_ConstructionNoiseContourBarrier_20151117.pdf
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
residences. Without noise abatement, intermittent noise levels at the property line could be
between 95 and 100 dBA Lmax, and average noise levels could be 90 dBA. The temporary noise
levels would be substantial and the impact would be significant. To reduce the noise levels to a
less than significant level, a portable noise barrier shall be installed between the work site and
adjacent residences and as close to the work site as feasible. The requirement for this barrier is
included as MM NOISE-4.
Off-Site Traffic
Project demolition and excavation would include the export of demolished materials and the
import of construction materials and reservoir fill material using large diesel trucks. It is estimated
that approximately 800 truck trips would be required for the reservoir fill and that the material
would come from off-site locations. It is assumed that most of the project-generated truck traffic
would use a route that includes State Route 91, Harbor Boulevard, and La Palma Avenue to the
West Street site entrance. It is not anticipated that the intensity of heavy trucking would exceed
40 round trips per day, or an average of ten 1-way trips per hour. Based on the existing traffic
noise level on West Street (Measurement 6 in Table 2), the addition of 10 truck trips per hour
would increase the noise level at the residences opposite the project site by less than 2 dBA. The
impact would be less than significant.
Threshold 3
Would the project expose persons to or generate noise levels in excess
of standards established in the local general plan or noise ordinance, or
applicable standards of other agencies?
As discussed under Threshold 1 and shown in Exhibit 6, the operational 60 dBA noise contour
would be contained within the project boundary. Therefore, the proposed project would not
expose persons to or generate noise levels in excess of the 60 dBA standard established in City
of Anaheim Municipal Code or any other applicable standards of other agencies. As previously
discussed, noise generated by the project is exempt from the limits in Chapter 6.70 of the Anaheim
Municipal Code.
Threshold 4
Would the project expose persons to or generate excessive groundborne
vibration or groundborne noise levels?
Construction of the proposed project has the potential to generate vibration to the adjacent
residences and their occupants. Operation of heavy construction equipment (e.g., large
bulldozers) and impact equipment (e.g., pile drivers, jackhammers) creates seismic waves that
radiate along the surface of the earth and downward into the earth. These surface waves can be
felt as ground vibration. Vibration from operation of this equipment can result in effects ranging
from annoyance to structural damage. Construction that can result in significant levels of ground
vibration generally falls into two categories that are best characterized by the cause of the
vibration and its duration. Vibration that is steady-state and more or less continuous can be
caused by vibratory compaction of soil, vibratory pile driving, movement of large equipment, and
other sources. In contrast, vibration that is much more transient in nature and intermittent due to
impulsive forces can be caused by pile driving and blasting. The proposed project would not
include blasting, but may include vibratory pile driving.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
Thresholds of Significance
There are no applicable standards for structural damage from vibration. The California
Department of Transportation (Caltrans) vibration damage potential guideline thresholds are
shown in Table 6 (Caltrans 2013b).
TABLE 6
GUIDELINE VIBRATION DAMAGE POTENTIAL THRESHOLD CRITERIA
Maximum ppv (in/sec)
Structure and Condition
Transient Sources
Continuous/Frequent
Intermittent Sources
0.12
0.08
Extremely fragile historic buildings, ruins, ancient monuments
Fragile buildings
0.2
0.1
Historic and some old buildings
0.5
0.25
Older residential structures
0.5
0.3
New residential structures
1.0
0.5
Modern industrial/commercial buildings
2.0
0.5
ppv:
peak particle velocity; in/sec: inch(es) per second
Note: Transient sources create a single isolated vibration event, such as blasting or drop balls. Continuous/frequent intermittent
sources include impact pile drivers, pogo-stick compactors, crack-and-seat equipment, vibratory pile drivers, and vibratory
compaction equipment.
Source: Caltrans 2013b.
The nearest structures to the project site are the homes near the southern project boundary. In
terms of the classifications in Table 6, these structures are “older residential structures”.
Therefore, the criteria for a significant impact is 0.5 peak particle velocity (ppv) inch per second
(in/sec) for transient sources and 0.3 ppv in/sec for continuous or frequent intermittent sources.
There are no applicable standards for human annoyance from vibration. The Caltrans vibration
annoyance potential guideline thresholds are shown in Table 7 (Caltrans 2013b). Based on the
guidance in Table 7, the “strongly perceptible” vibration level of 0.9 ppv in/sec is considered as a
threshold for a potentially significant vibration impact for human annoyance. However, because
the structural damage thresholds of 0.5 and 0.3 ppv in/sec are lower than the annoyance
threshold, the structural damage thresholds govern the impact assessment.
TABLE 7
GUIDELINE VIBRATION ANNOYANCE POTENTIAL CRITERIA
Average Human Response
Severe
ppv (in/sec)
2.0
Strongly perceptible
0.9
Distinctly perceptible
0.24
Barely perceptible
0.035
ppv: peak particle velocity; in/sec: inch(es) per second
Source: Caltrans 2013b.
Impact Analysis
Table 8 summarizes typical vibration levels measured during construction activities for various
vibration-inducing pieces of equipment at a distance of 25 feet.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
TABLE 8
VIBRATION LEVELS FOR CONSTRUCTION EQUIPMENT
Equipment
Pile driver (impact)
Pile driver (vibratory)
ppv at 25 ft (in/sec)
upper range
1.518
typical
0.644
upper range
0.734
typical
0.170
Vibratory roller
0.210
Large bulldozer
0.089
Caisson drilling
0.089
Loaded trucks
0.076
Jackhammer
0.035
Small bulldozer
0.003
ppv: peak particle velocity; ft: feet; in/sec: inches per second.
Source: Caltrans 2013b; FTA 2006.
As described above, sheet piles may be required for the construction of the wet wells and a
vibratory pile driver would be used. The pile driver would be more than 75 feet from the closest
residence. At a distance of 75 feet, the vibration from a typical vibratory pile driver is estimated at
0.04 ppv in/sec, and the vibration from a vibratory pile driver in the upper range of vibration (see
Table 8) is estimated at 0.18 ppv in/sec. These values are less than the continuous frequent
intermittent threshold of 0.3 ppv in/sec; the impact would be less than significant and no mitigation
is required.
Operation of large bulldozers and vibratory rollers near the residences is not anticipated.
However, loaded trucks would travel adjacent to the southern property line to bring fill materials
to the 3-MG reservoir location and various construction materials to locations on the site. Based
on the assumption that loaded trucks would be as close as 10 feet to adjacent residences, the
estimated transient vibration is 0.25 ppv in/sec. This value is less than the transient threshold of
0.5 ppv in/sec; the impact would be less than significant and no mitigation is required.
Threshold 5
For a project located within an airport land use plan (Los Alamitos Armed
Forces Reserve Center or Fullerton Municipal Airport), would the project
expose people residing or working in the project area to excessive noise
levels?
Threshold 6
For a project within the vicinity of a private airstrip, heliport or helistop,
would the project expose people residing or working in the project area to
excessive noise levels?
The closest airport to the project site is the Fullerton Municipal Airport, located approximately
3.3 miles to the northwest. There are no private airstrips, heliports, or helistops in the vicinity of
the project site. The proposed project would not generate aircraft noise, nor would it locate
persons in an area where they would be exposed to excessive aircraft noise levels. There would
be no impact.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
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Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
8.0
MITIGATION PROGRAM
8.1
PROJECT DESIGN FEATURES
The proposed project includes the following design features (PDF) that serve to reduce project
impacts related to noise. Implementation of these PDFs is assumed in the analysis presented in
this report, and the PDFs are included in recommended mitigation program
PDF NOISE-1
Parapets on the pump station roof will be 42 inches high and will be of solid
construction that provide a noise barrier between the rooftop air conditioner
and fan and noise receptors.
PDF NOISE-2
The emergency generator will be equipped with a sound enclosure that will
reduce noise levels to not greater than 85 A-weighted decibels (dBA) at a
distance of 3 feet. The sound enclosure will be provided by the manufacturer
and will include noise muffling/reduction features such as an exhaust silencer
and mineral wood acoustic insulation with perforated galvanized metal sheets.
The emergency generator is scheduled to be tested once per month.
8.2
MITIGATION MEASURES
The following mitigation measures are recommended for the project.
MM NOISE-1
Prior to the start of demolition, grading, and building activities, the City shall
install a temporary 12-foot-high noise barrier adjacent to the southern property
line. The barrier shall be solid and may consist of acoustical blankets, plywood,
or other material with a transmission loss of at least 20 dBA. Alternatively, if
demolition or building activity is limited to one area of the project site, the barrier
may be placed close to the work.
MM NOISE-2
Prior to approval of grading plans and/or prior to issuance of demolition,
grading, and building permits, the following noise-reduction measures shall be
identified in the construction plans or specifications:
•
The construction contractors shall equip all construction equipment, fixed
or mobile, with properly operating and maintained mufflers, consistent with
manufacturers’ standards. Stationary equipment shall be equipped with
noise enclosures or shall be screened to minimize noise impact.
•
The construction contractors shall place all stationary construction
equipment so that the equipment is as far as practicable from noisesensitive receptors and oriented so emitted noise is directed away from
noise-sensitive receptors.
•
The construction contractors shall locate equipment and material staging
in areas that will create the greatest distance between staging area noise
sources and noise-sensitive receptors.
•
Construction activities shall be limited to the hours of 8:00 AM to 7:00 PM,
Monday through Saturday.
•
Equipment maintenance and staging area activities shall be limited to the
hours of 8:00 AM to 7:00 PM.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
17
Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
•
Equipment and material deliveries to the site shall be limited to the hours
of 8:00 AM to 7:00 PM.
•
No radios, boom boxes, or similar audio equipment shall be operated
during construction.
MM NOISE-3
At least 30 days but no more than 45 days prior to the start of demolition and
construction activities, all property owners and occupants within 300 feet of the
project site shall be notified of the pending construction project. The notification
shall include the construction start date, days and hours of work, and estimated
completion date. The notification shall also state that the project will include
typical and sometimes loud noise and provide mobile phone and email contact
information.
MM NOISE-4
Prior to the issuance of the building permit for the new pump station, if pile
driving is required for wet well excavation and construction, the Public Utilities
Department shall ensure that plans or specifications require the use of a
temporary noise barrier for the pile driver. The noise barrier shall be at least 12
feet high and shall break the line of sight between the pile driver and the
residences to the south of the site. The noise barrier shall have a sound
transmission class (STC) rating of at least 28, and shall be solid from the
ground to the top, without gaps.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
18
Noise Impact Analysis
La Palma Complex Reservoir Rehabilitation
and Pump Station Replacement
9.0
REFERENCES
Anaheim, City of. 2015 (June, current through). Anaheim Municipal Code. Cincinnati, OH:
American Legal Publishing Corporation for the City. http://www.amlegal.com/nxt/
gateway.dll/California/anaheim/anaheimmunicipalcode?f=templates$fn=default.htm$3.0
$vid=amlegal:anaheim_ca.
California Department of Transportation (Caltrans). 2013a (September). Technical Noise
Supplement (TeNS): Technical Supplement to the Traffic Noise Analysis
Protocol (prepared by ICF Jones & Stokes). Sacramento, CA: Jones & Stokes.
http://www.dot.ca.gov/hq/env/noise/pub/TeNS_Sept_2013B.pdf.
———. 2013b (September). Transportation and Construction Vibration Guidance Manual.
Sacramento, CA: http://www.dot.ca.gov/hq/env/noise/pub/TCVGM_Sep13_FINAL.pdf.
Environmental Protection Agency (EPA). 2015a (May). EPA Identifies Noise Levels Affecting
Health and Welfare.Washington, D.C: EPA. http://www2.epa.gov/aboutepa/epa-identifiesnoise-levels-affecting-health-and-welfare.
Orange
General
Plan,
http://www.cityoforange.org/civicax/filebank/blobdload.aspx?blobid=2711Psomas. 2015.
City of Anaheim La Palma Complex Master Plan 2015. Santa Ana, CA: Psomas.
Thalheimer, E. 2000. Construction Noise Control Program and Mitigation Strategy as the Central
Artery/Tunnel Project. Noise Control Engineering Journal 48(5), Sep–Oct. Indianapolis,
IN: Institute of Noise Control Engineering.
U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA). 2008
(December 8). Road Construction Noise Model (RNCM), Software Version 1.1.
U.S. Department of Transportation (USDOT), Federal Transit Administration (FTA). 2006 (May).
Transit Noise and Vibration Impact Assessment, FTA-VA-90-1003-06 (prepared
by Harris Miller Miller & Hanson, Inc. [HMMH]). Vienna, VA: HMMH.
http://www.fta.dot.gov/documents/FTA_Noise_and_Vibration_Manual.pdf.
R:\Projects\2ANA\2ANA015200\Noise\La Palma Complex Noise Analysis-111815.docx
19
Noise Impact Analysis
ATTACHMENT A
NOISE MONITORING RESULTS
Summary
File Name
Serial Number
Model
Firmware Version
User
Location
Job Description
Note
Measurement Description
Start
Stop
Duration
Run Time
Pause
831_Data.036
0001742
Model 831
2.300
Kurtz/Gershon
1 - La Palma, SW cnr 4MG res
ackground traffic; barking dog
2015-08-07 10:44:15
2015-08-27 10:54:44
0:13:07.3
0:13:07.3
0:00:00.0
Pre Calibration
Post Calibration
Calibration Deviation
2015-08-05 14:30:44
None
---
Overall Settings
RMS Weight
Peak Weight
Detector
Preamp
Microphone Correction
Integration Method
Gain
A Weighting
A Weighting
Slow
PRM831
Off
Linear
0.0 dB
A
78.1
26.7
17.5
Under Range Peak
Under Range Limit
Noise Floor
Results
LAeq
LApeak (max)
LASmax
LASmin
52.1 100.2071 dB
2015-08-27 10:04:48
2015-08-27 10:04:48
2015-08-27 7:31:47
C
75.1
27.1
18.0
96.1 142.8058 dB
69.0 114.3525 dB
41.2 31.94505 dB
Note: data file included test and caibration data prior to project
measurement. Results adjusted as shown on measurement history.
Calibration History
Preamp
PRM831
PRM831
PRM831
PRM831
PRM831
PRM831
Date
2015-08-27 10:43:19
2015-08-07 10:44:49
2015-08-05 14:30:44
2015-08-05 9:20:52
2015-07-29 13:23:13
2015-07-29 9:23:01
A-1
dB re. 1V/Pa
-28.1
-26.6
-26.5
-26.5
-26.4
-26.5
Record #
16
17
18
19
20
21
22
23
24
25
Date
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
Time
10:45:19
10:46:00
10:47:00
10:48:00
10:49:00
10:50:00
10:51:00
10:52:00
10:53:00
10:54:00
Run Duration
0:00:40.6
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:44.4
0:09:25.0
9.42
LAeq
Energy
49.4
87055.5
51.1 129361.8
45.0
31382.4
45.8
37936.8
44.8
30011.6
45.9
38816.3
46.7
46854.8
51.6 142920.0
55.3 339946.1
58.0 637627.4
min 1521912.6
161619.0
Leq
52.1
A-2
LASmin
44.5
44.7
41.2
41.9
42.0
42.5
42.0
42.9
45.4
46.0
total
ave
LASmin Time
10:45:40
10:46:43
10:47:36
10:48:43
10:49:32
10:50:48
10:51:56
10:52:00
10:53:50
10:54:19
LASmax
60.8
60.6
49.6
49.4
48.6
53.8
58.5
61.0
68.4
69.0
LASmax Time
LApeak (max)
10:45:19
91.6
10:46:12
91.7
10:47:07
79.7
10:48:10
82.3
10:49:57
72.7
10:50:01
80.5
10:51:00
80.9
10:52:33
96.1
10:53:51
92.3
10:54:37
91.7
Summary
File Name
Serial Number
Model
Firmware Version
User
Location
Job Description
Note
Measurement Description
Start
Stop
Duration
Run Time
Pause
831_Data.037
0001742
Model 831
2.300
Kurtz/Gershon
2 - La Palma, 6' W of Well 49
Motor-pump noise
2015-08-27 11:02:52
2015-08-27 11:07:55
0:05:03.3
0:05:03.3
0:00:00.0
Pre Calibration
Post Calibration
Calibration Deviation
2015-08-27 10:43:19
None
---
Overall Settings
RMS Weight
Peak Weight
Detector
Preamp
Microphone Correction
Integration Method
Gain
Overload
A Weighting
A Weighting
Slow
PRM831
Off
Linear
0.0 dB
145.7 dB
A
78.1
26.7
17.5
Under Range Peak
Under Range Limit
Noise Floor
Results
LAeq
LAE
EA
LApeak (max)
LASmax
LASmin
SEA
Statistics
LAS5.00
LAS10.00
LAS33.30
LAS50.00
LAS66.60
LAS90.00
Calibration History
Preamp
PRM831
PRM831
PRM831
PRM831
PRM831
PRM831
76.6
101.4
1.545
2015-08-27 11:07:43
2015-08-27 11:07:35
2015-08-27 11:02:52
-99.9
dB
77.5
77.3
76.8
76.5
76.3
75.9
dB
dB
dB
dB
dB
dB
Date
2015-08-27 10:43:19
2015-08-07 10:44:49
2015-08-05 14:30:44
2015-08-05 9:20:52
2015-07-29 13:23:13
2015-07-29 9:23:01
A-3
C
75.1
27.1
18.0
dB
dB
mPa²h
88.2 dB
78.4 dB
73.2 dB
dB re. 1V/Pa
-28.1
-26.6
-26.5
-26.5
-26.4
-26.5
Record #
1
2
3
4
5
6
Date
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
Time
11:02:52
11:03:00
11:04:00
11:05:00
11:06:00
11:07:00
Run Duration
0:00:07.9
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:55.4
Run Time
0:00:07.9
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:55.4
Pause
LAeq LAE
75.8 84.8
0:00:00.0
0:00:00.0
76.7 94.5
0:00:00.0
76.7 94.5
0:00:00.0
76.2 94.0
0:00:00.0
76.5 94.3
0:00:00.0
76.9 94.4
A-4
LASmin
73.2
75.8
75.9
75.5
75.4
76.1
LASmin Time
11:02:52
11:03:28
11:04:22
11:05:29
11:06:27
11:07:16
LASmax
76.4
77.6
77.9
77.9
77.7
78.4
LASmax Time
11:02:59
11:03:50
11:04:06
11:05:01
11:06:33
11:07:35
LApeak (max)
87.3
88.2
87.7
88.1
87.6
88.2
Summary
File Name
Serial Number
Model
Firmware Version
User
Location
Job Description
Note
Measurement Description
Start
Stop
Duration
Run Time
Pause
831_Data.038
0001742
Model 831
2.300
Kurtz/Gershon
3 - La Palma, S of pump station
Bkgd plus pump start, stop
2015-08-27 11:10:00
2015-08-27 11:27:19
0:13:17.3
0:13:17.3
0:00:00.0
Pre Calibration
Post Calibration
Calibration Deviation
2015-08-27 10:43:19
None
---
Overall Settings
RMS Weight
Peak Weight
Detector
Preamp
Microphone Correction
Integration Method
Gain
Overload
A Weighting
A Weighting
Slow
PRM831
Off
Linear
0.0 dB
145.7 dB
A
78.1
26.7
17.5
Under Range Peak
Under Range Limit
Noise Floor
Results
LAeq
LAE
EA
LApeak (max)
LASmax
LASmin
Note: Last minute of data deleted because of interference; see
measurement history.
53.3 54.58633 dB
83.6 dB
25.469 µPa²h
2015-08-27 11:13:32
2015-08-27 11:14:18
2015-08-27 11:27:13
Statistics
LAS5.00
LAS10.00
LAS33.30
LAS50.00
LAS66.60
LAS90.00
58.6
56.1
54.8
54.1
53.0
52.0
Calibration History
Preamp
PRM831
PRM831
PRM831
PRM831
PRM831
PRM831
Date
2015-08-27 10:43:19
2015-08-07 10:44:49
2015-08-05 14:30:44
2015-08-05 9:20:52
2015-07-29 13:23:13
2015-07-29 9:23:01
A-5
C
75.1
27.1
18.0
93.1 dB
60.6 dB
50.8 46.7374 dB
dB
dB
dB
dB
dB
dB
dB re. 1V/Pa
-28.1
-26.6
-26.5
-26.5
-26.4
-26.5
Record #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Date
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
Time
11:10:00
11:11:00
11:12:00
11:13:00
11:14:00
11:15:00
11:16:00
11:17:00
11:18:00
11:19:00
11:20:00
11:21:00
11:22:00
11:23:00
Run Duration
LAeq
0:00:59.8
52.2
0:01:00.0
52.3
0:01:00.0
58.0
0:01:00.0
53.2
0:01:00.0
56.3
0:01:00.0
54.7
0:01:00.0
54.5
0:01:00.0
55.4
0:01:00.0
54.8
0:01:00.0
54.8
0:01:00.0
53.5
0:01:00.0
53.6
0:01:00.0
52.8
0:00:06.3
53.6
0:13:06.1
min
13.10
Leq
Energy
166272.7
169631.7
632615.7
210560.5
427661.3
291750.8
282870.7
346677.0
305172.9
304403.1
223027.8
228139.8
190544.8
231728.8
2831976.9
216153.9
53.3
LASmin
50.6
50.8
51.7
51.3
53.6
53.4
53.2
54.2
53.5
53.4
52.3
52.1
51.3
52.2
total
ave
A-6
LASmin Time
11:10:29
11:11:31
11:12:00
11:13:18
11:14:01
11:15:10
11:16:52
11:17:02
11:18:37
11:19:37
11:20:59
11:21:01
11:22:49
11:23:00
LASmax
58.3
57.8
60.4
57.2
60.6
55.8
58.6
56.4
57.1
56.8
56.3
56.8
54.8
56.1
LASmax Time
11:10:00
11:11:52
11:12:26
11:13:32
11:14:18
11:15:37
11:16:46
11:17:54
11:18:17
11:19:44
11:20:09
11:21:13
11:22:04
11:23:04
LApeak (max)
80.2
87.7
73.9
93.1
82.8
78.8
72.2
75.7
70.4
86.3
77.5
85.0
73.1
83.8
Summary
File Name
Serial Number
Model
Firmware Version
User
Location
Job Description
Note
Measurement Description
Start
Stop
Duration
Run Time
Pause
Pre Calibration
Post Calibration
Calibration Deviation
831_Data.039
0001742
Model 831
2.300
Kurtz/Gershon
4 - La Palma, SE corner of 3MG res
Background
2015-08-27 11:27:31
2015-08-27 11:37:32
0:10:00.9
0:10:00.9
0:00:00.0
2015-08-27 10:43:19
None
---
Overall Settings
RMS Weight
Peak Weight
Detector
Preamp
Microphone Correction
Integration Method
Gain
Overload
A Weighting
A Weighting
Slow
PRM831
Off
Linear
0.0 dB
145.7 dB
A
78.1
26.7
17.5
Under Range Peak
Under Range Limit
Noise Floor
Results
LAeq
LAE
EA
LApeak (max)
LASmax
LASmin
SEA
48.8 dB
76.6 dB
5.115 µPa²h
2015-08-27 11:28:29
2015-08-27 11:28:05
2015-08-27 11:32:31
-99.9 dB
Statistics
LAS5.00
LAS10.00
LAS33.30
LAS50.00
LAS66.60
LAS90.00
Calibration History
Preamp
PRM831
PRM831
PRM831
PRM831
PRM831
PRM831
51.7
50.5
48.9
48.0
47.3
46.1
Date
2015-08-27 10:43:19
2015-08-07 10:44:49
2015-08-05 14:30:44
2015-08-05 9:20:52
2015-07-29 13:23:13
2015-07-29 9:23:01
A-7
C
75.1
27.1
18.0
82.8 dB
57.9 dB
44.9 dB
dB
dB
dB
dB
dB
dB
dB re. 1V/Pa
-28.1
-26.6
-26.5
-26.5
-26.4
-26.5
16000
20000
Record #
1
2
3
4
5
6
7
8
9
10
11
Date
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
Time
11:27:31
11:28:00
11:29:00
11:30:00
11:31:00
11:32:00
11:33:00
11:34:00
11:35:00
11:36:00
11:37:00
Run Duration
0:00:28.2
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:32.7
Run Time
0:00:28.2
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:32.7
Pause
LAeq LAE
47.4 61.9
0:00:00.0
0:00:00.0
50.8 68.6
0:00:00.0
49.9 67.7
0:00:00.0
49.1 66.9
0:00:00.0
50.2 68.0
0:00:00.0
47.7 65.5
0:00:00.0
47.6 65.4
0:00:00.0
47.7 65.5
0:00:00.0
48.1 65.8
0:00:00.0
48.5 66.3
0:00:00.0
46.6 61.7
A-8
LASmin
46.0
46.9
47.6
46.7
45.4
44.9
45.5
45.3
45.6
45.1
45.3
LASmin Time
11:27:48
11:28:48
11:29:33
11:30:57
11:31:07
11:32:31
11:33:12
11:34:51
11:35:56
11:36:46
11:37:30
LASmax
50.3
57.9
53.2
52.2
56.3
56.1
50.0
50.0
52.0
53.8
48.2
LASmax Time
11:27:35
11:28:05
11:29:42
11:30:18
11:31:59
11:32:00
11:33:25
11:34:26
11:35:02
11:36:37
11:37:15
LApeak (max)
79.7
82.8
80.8
76.3
73.7
74.3
77.3
76.2
82.7
76.3
67.6
Summary
File Name
Serial Number
Model
Firmware Version
User
Location
Job Description
Note
Measurement Description
Start
Stop
Duration
Run Time
Pause
831_Data.040
0001742
Model 831
2.300
Kurtz/Gershon
5 - La Palma, 6' E of Well 49
2015-08-27 11:42:06
2015-08-27 11:46:07
0:04:01.0
0:04:01.0
0:00:00.0
Pre Calibration
Post Calibration
Calibration Deviation
2015-08-27 10:43:19
None
---
Overall Settings
RMS Weight
Peak Weight
Detector
Preamp
Microphone Correction
Integration Method
Gain
Overload
A Weighting
A Weighting
Slow
PRM831
Off
Linear
0.0 dB
145.7 dB
A
78.1
26.7
17.5
Under Range Peak
Under Range Limit
Noise Floor
Results
LAeq
LAE
EA
LApeak (max)
LASmax
LASmin
SEA
Statistics
LAS5.00
LAS10.00
LAS33.30
LAS50.00
LAS66.60
LAS90.00
Calibration History
Preamp
PRM831
PRM831
PRM831
PRM831
PRM831
PRM831
82.9
106.7
5.163
2015-08-27 11:42:47
2015-08-27 11:45:32
2015-08-27 11:42:27
-99.9
dB
84.1
83.9
83.2
82.8
82.5
81.0
dB
dB
dB
dB
dB
dB
Date
2015-08-27 10:43:19
2015-08-07 10:44:49
2015-08-05 14:30:44
2015-08-05 9:20:52
2015-07-29 13:23:13
2015-07-29 9:23:01
A-9
C
75.1
27.1
18.0
dB
dB
mPa²h
93.2 dB
84.3 dB
79.8 dB
dB re. 1V/Pa
-28.1
-26.6
-26.5
-26.5
-26.4
-26.5
Record #
1
2
3
4
5
Date
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
Time
11:42:06
11:43:00
11:44:00
11:45:00
11:46:00
Run Duration
0:00:53.4
0:01:00.0
0:01:00.0
0:01:00.0
0:00:07.6
Run Time
0:00:53.4
0:01:00.0
0:01:00.0
0:01:00.0
0:00:07.6
Pause
0:00:00.0
0:00:00.0
0:00:00.0
0:00:00.0
0:00:00.0
A-10
LAeq
82.2
82.8
82.4
83.7
83.9
LAE
99.5
100.6
100.2
101.4
92.7
LASmin
79.8
81.4
80.9
82.6
83.2
LASmin Time
11:42:27
11:43:40
11:44:38
11:45:57
11:46:00
LASmax
83.8
83.8
83.1
84.3
84.1
LASmax Time
11:42:56
11:43:03
11:44:59
11:45:32
11:46:07
LApeak (max)
93.2
92.1
92.1
92.3
92.1
Summary
File Name
Serial Number
Model
Firmware Version
User
Location
Job Description
Note
Measurement Description
Start
Stop
Duration
Run Time
Pause
831_Data.041
0001742
Model 831
2.300
Kurtz/Gershon
6 - La Palma, W side West St
2015-08-27 11:51:31
2015-08-27 12:07:10
0:15:39.1
0:15:39.1
0:00:00.0
Pre Calibration
Post Calibration
Calibration Deviation
2015-08-27 10:43:19
None
---
Overall Settings
RMS Weight
Peak Weight
Detector
Preamp
Microphone Correction
Integration Method
Gain
Overload
A Weighting
A Weighting
Slow
PRM831
Off
Linear
0.0 dB
145.7 dB
A
78.1
26.7
17.5
Under Range Peak
Under Range Limit
Noise Floor
Results
LAeq
LAE
EA
LApeak (max)
LASmax
LASmin
SEA
Statistics
LAS5.00
LAS10.00
LAS33.30
LAS50.00
LAS66.60
LAS90.00
Calibration History
Preamp
PRM831
PRM831
PRM831
PRM831
PRM831
PRM831
63.5
93.2
232.430
2015-08-27 11:57:38
2015-08-27 11:57:39
2015-08-27 12:03:37
-99.9
dB
69.2
67.2
61.1
56.7
53.3
49.5
dB
dB
dB
dB
dB
dB
Date
2015-08-27 10:43:19
2015-08-07 10:44:49
2015-08-05 14:30:44
2015-08-05 9:20:52
2015-07-29 13:23:13
2015-07-29 9:23:01
A-11
C
75.1
27.1
18.0
dB
dB
µPa²h
95.0 dB
81.8 dB
45.9 dB
dB re. 1V/Pa
-28.1
-26.6
-26.5
-26.5
-26.4
-26.5
Record #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Date
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
2015-08-27
Time
11:51:31
11:52:00
11:53:00
11:54:00
11:55:00
11:56:00
11:57:00
11:58:00
11:59:00
12:00:00
12:01:00
12:02:00
12:03:00
12:04:00
12:05:00
12:06:00
12:07:00
Run Duration
0:00:28.4
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:10.7
Run Time
0:00:28.4
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:01:00.0
0:00:10.7
Pause
LAeq LAE
0:00:00.0
61.8 76.3
0:00:00.0
64.2 82.0
0:00:00.0
58.8 76.6
0:00:00.0
62.7 80.4
0:00:00.0
60.4 78.2
0:00:00.0
63.9 81.7
0:00:00.0
70.0 87.8
0:00:00.0
62.4 80.2
0:00:00.0
62.0 79.8
0:00:00.0
63.3 81.1
0:00:00.0
59.7 77.4
0:00:00.0
59.6 77.3
0:00:00.0
63.6 81.4
0:00:00.0
65.5 83.3
0:00:00.0
60.7 78.5
0:00:00.0
58.2 76.0
0:00:00.0
61.9 72.2
A-12
LASmin
48.8
49.0
49.1
48.5
49.1
51.5
51.0
50.3
46.7
48.7
48.5
48.6
45.9
46.4
52.0
46.7
51.6
LASmin Time
11:51:31
11:52:55
11:53:43
11:54:50
11:55:55
11:56:59
11:57:06
11:58:14
11:59:44
12:00:05
12:01:29
12:02:52
12:03:37
12:04:14
12:05:26
12:06:48
12:07:10
LASmax
69.0
70.9
67.6
72.2
69.3
71.7
81.8
71.5
71.0
72.0
64.7
69.2
71.8
75.0
68.2
69.7
66.6
LASmax Time
11:51:59
11:52:40
11:53:59
11:54:29
11:55:27
11:56:34
11:57:39
11:58:29
11:59:02
12:00:30
12:01:11
12:02:29
12:03:07
12:04:01
12:05:00
12:06:22
12:07:03
LApeak (max)
87.4
88.3
85.7
87.4
86.0
84.9
95.0
86.7
86.8
86.4
82.6
84.6
89.8
92.7
82.4
83.7
82.2
ATTACHMENT B
MANUFACTURER’S LITERATURE
Sound-attenuated and
weather-protective
enclosures
> For generator sets from 10 to 1000 kW
>
Diesel generator set enclosures
10 to 1000 kW
Weather-protective
Level I, Level II, Level III
>
Spark-ignited generator set
enclosures
20 to 150 kW
Weather-protective
Level I, Level II
Sound-attenuated and weatherprotective enclosures from Cummins
Power Generation Inc. meet even the
strictest sound requirements and
provide optimum protection from
inclement weather.
Cummins Power Generation diesel and spark-ignited
generator sets are available with sound-attenuated and
weather-protective enclosures. Pre-assembled,
pre-integrated and delivered as part of the entire power
system, these enclosures are designed to speed
installation time and reduce costs.
Choose from three levels of sound-attenuation, depending
on model size, to comply with even the strictest noise
requirements. Enclosures are constructed of steel or
aluminum, which is preferred in coastal regions or other
environments where corrosion is a concern.
www.cumminspower.com
Features:
■ 12 and 14 gauge steel construction
■ Cambered roof Prevents water
accumulation
■ Stainless steel
hardware
Resists rust
■ Emergency stop
button (standard
on 600-1000 kW)
■ Enclosed
exhaust system Ensures
safety
■ Fixed air
inlet and
outlet
louvers
■ Choice of
vertical or
horizontal
discharge
■ Non-hydroscopic
sound insulation
■ Recessed, lockable doors
Provides easy service access and protects internal equipment
■ Flexible oil and coolant drain lines with interior valves
■ Rodent barriers
on inlet and
outlet
■ Ships assembled
on fuel tank or
lifting base
> Three levels of sound attenuation
> Upgrade kits
Level I: 70 to 89 d(B)A*
Level II: 63 to 78 d(B)A*
> Enclosures mounted directly to a sub-base fuel tank or
lifting base
Level III: 68 to 70 d(B)A*
> UL2200-listed
> Compact footprint, low profile design
>Customer options available to meet your application needs
> Easy access to all major generator and engine control
components for servicing
Enclosure options
> Fully-house, enclosed exhaust silencer ensures safety
and protects against rust
>Aluminum enclosure is wind-rated to 150 mph (per
ASCE 7-05 exposure D, category 1 importance factor)
>Enclosure, generator set, exhaust system and tank are
pre-assembled, pre-integrated and shipped as one
package, saving time and labor costs
>Kits available to up-fit existing generator sets or to upgrade
existing enclosures with additional sound attenuation
>All-steel construction with stainless steel hardware offers
durability
>Exterior oil and coolant drains with interior valves for ease
of service
>Overhead 2-point lifting brackets (some models)
* Full load at 7 meters, steel enclosures
www.cumminspower.com
Choose from weather protective enclosure or three levels of sound attenuation:
Sound levels (dB(A))*
Sound levels (dB(A))*
Model
Weatherprotective
Level I
Level II
20
GGMA
77
N/A
66
25
GGMB
78
N/A
66
67
30
GGMC
79
N/A
67
72
69
35
GGFD
80
73
65
82
71
63
42/47
GGFE
83
73
66
DGGD
81
72
66
60
GGHE
86
77
68
40
DGBC
82
72
63
70/75
GGHF
87
77
69
40
DGHD
79
71
64
85
GGHG
85
79
75
50
DGCA
83
72
66
100
GGHH
86
80
76
50
DGHE
79
70
65
125
GGLA
85
79
75
60
DGCB
84
73
67
150
GGLB
85
79
75
60
DSFAD
87
79
71
Model
Weatherprotective
Level I
Level II
10
DSKAA
78
68
65
15
DSKAB
81
69
66
20
DSKBA
80
70
25
DSKFA
82
35
DGBB
35
kW
Diesel
Spark-ignited
80
DGCG
84
76
67
80
DSFAE
87
82
72
100
DGDB
86
77
70
100
DSGAA*
87
-
73
100
DSHAF
95
88
78
125
DGDK
86
80
71
125
DSGAB*
87
-
74
DSHAE
95
88
78
DGFA
89
77
72
125
150
kW
150
DSGAC*
88
-
75
150
DSHAA
95
88
78
175
DGFB
90
78
72
175
DSHAB
95
88
78
200
DGFC
91
80
74
200
DSHAC
95
88
78
230
DGFS
91
81
75
230
DSHAD
96
89
78
250
DQDAA
90
86
71
275
DQDAB
89
86
71
275
DQHAA
86
85
74
300
DFCB
86
84
71
300
DQDAC
89
86
71
300
DQHAB
89
88
76
350
DFCC
87
85
72
350
DFEG
85
83
72
400
DFCE
89
85
73
400
DFEG
89
85
73
450
DFEJ
87
84
73
500
DFEK
88
85
76
600
DFGB
85
78
74
600
DQCA
87
79
74
750
DFGE
87
80
75
750
DFHA
91
81
77
750
DQCB
87
79
74
750
DQFAA
89
79
75
800
DFHB
91
81
77
800
DQCC
87
79
74
800
DQFAB
89
79
75
900
DFHC
93
83
78
900
DQFAC
88
80
76
1000
DFHD
90
80
76
1000
DQFAD
90
80
76
* Full load at 7 meters, steel enclosures
* Also available Level III
100 kW
125 kW
150 kW
DSGAA 68 dB(A)
DSGAB 69 dB(A)
DSGAC 70 dB(A)
Diesel generator sets from 100 to 150 kW
(models DSGAA, DSGAB, DSGAC) are
available in Level III sound attenuation.
Shown: 100 kW Tier 3 diesel generator
set (model DSGAA).
www.cumminspower.com
Diesel package dimensions (in.)
Weatherprotective
Tank
capacity
(gal.)
Level I
Spark-ignited package dimensions (in.)
Level II, III
Length Width Height Length Width Height Length Width Height
35-80 kW
Model
number
Level I
Level II
Length Width Height Length Width Height Length Width Height
20 kW
70
83
40
63
83
40
81
102
40
81
140
83
40
71
83
40
89
102
40
89
GGMA
109
105
40
67
108
40
85
142
40
87
173
105
40
72
108
40
90
142
40
92
309
105
44
87
N/A
N/A
N/A
145
43
97
336
105
40
86
108
40
104
142
40
106
230-500 kW
65
30
46
N/A
N/A
N/A
85
30
47
65
30
46
N/A
N/A
N/A
85
30
47
65
30
46
N/A
N/A
N/A
85
30
47
83
40
54
83
40
72
83
40
72
83
40
54
83
40
72
83
40
72
83
40
54
83
40
72
83
40
72
83
40
54
83
40
72
83
40
72
105
40
70
105
60
70
142
60
70
105
40
70
105
60
70
142
60
70
105
40
70
105
60
70
142
60
70
105
40
70
105
60
70
142
60
70
25 kW
GGMB
100-230 kW
30 kW
GGMC
35 kW
GGFD
45 kW
Lifting base
188
82
100
188
82
100
222
82
100
300
188
82
104
188
82
104
222
82
104
400
188
82
106
188
82
106
222
82
106
500
188
82
108
188
82
108
222
82
108
600
188
82
111
188
82
111
222
82
111
660
188
82
113
188
82
113
222
82
113
720
188
82
114
188
82
114
222
82
114
850
188
82
118
188
82
118
222
82
118
GGFE
60 kW
GGHE
70 kW
GGHF
85 kW
GGHG
100 kW
GGHH
1470
200
82
128
200
82
128
200
82
128
1700
234
82
128
234
82
128
234
82
128
125 kW
98
133
303
98
133
315
98
133
150 kW
GGLB
GGLA
600-1000 kW
200
Weatherprotective
260
660
260
98
133
303
98
133
315
98
133
1000
260
98
137
303
98
137
315
98
137
1500
260
98
142
303
98
142
315
98
142
2000
280
98
142
320
98
142
320
98
142
2400
332
98
142
330
98
142
332
98
142
Cummins Power Generation
1400 73rd Avenue N.E.
Minneapolis, MN 55432
Phone: 763 574 5000
Fax: 763 574 5298
Latin America
3350 Southwest 148th Ave., Suite 205
Miramar, FL 33027
USA
Phone 1 954 431 5511
Fax 1 954 433 5797
Our energy working for you.™
www.cumminspower.com
© 2008 Cummins Power Generation Inc. All rights reserved. Cummins Power Generation and Cummins are registered
trademarks of Cummins Inc. “Our energy working for you.” is a trademark of Cummins Power Generation.
Specifications are subject to change without notice. (3/08) CPG-623 F-1493
Package listed to UL2200