CC - Item 3A - Attachment H - Appendix G. Willard & Garvey Noisegroup, inc.engineering
WILLARD AND GARVEY RESIDENTIAL DEVELOPMENT
NOISE IMPACT STUDYCity of Rosemead
BE: sl/rk16080.1.doc
JN:1445-2019-02
WILLARD AND GARVEY RESIDENTIAL DEVELOPMENT
NOISE IMPACT STUDY
City of Rosemead, California
Prepared for:
Mr. Steve Armanino
THE OLSON COMPANY
3010 Old Ranch Parkway, Suite 100
Seal Beach, CA 90740-2751
Prepared by:
RK ENGINEERING GROUP, INC.
4000 Westerly Place, Suite 280
Newport Beach, CA 92660
Bryan Estrada, AICP
Darshan Shivaiah, M.S.
August 4, 2020
Table of Contents
Section Page
1.0 Introduction ........................................................................................... 1-1
1.1 Purpose of Analysis and Study Objectives 1-1
1.2 Site Location 1-1
1.3 Project Description 1-2
1.4 Summary of Analysis Results 1-2
1.5 Recommended Mitigation Measures 1-3
1.6 Recommended Project Design Features 1-4
2.0 Fundamentals of Noise and Vibration .................................................. 2-1
2.1 Sound, Noise and Acoustics 2-1
2.2 Frequency and Hertz 2-1
2.3 Sound Pressure Levels and Decibels 2-1
2.4 Addition of Decibels 2-1
2.5 Human Responses to Changes in Noise Levels 2-2
2.6 Noise Descriptors 2-2
2.7 Sound Propagation 2-5
2.8 Vibration Descriptors 2-7
2.9 Vibration Perception 2-7
2.10 Vibration Propagation 2-8
2.11 Construction Related Vibration Level Prediction 2-8
3.0 Regulatory Setting ................................................................................. 3-1
3.1 Federal Regulations 3-1
3.2 State Regulations 3-2
3.3 City of Rosemead Noise Regulations 3-3
3.3.1 City of Rosemead General Plan Noise 3-3
3.3.2 City of Rosemead Municipal Code 3-4
3.4 Thresholds of Significance 3-6
4.0 Study Method and Procedures .............................................................. 4-1
4.1 Measurement Procedures and Criteria 4-1
4.2 Stationary Noise Modeling 4-2
4.2.1 HVAC Equipment Noise 4-3
5.0 Existing Noise Environment................................................................... 5-1
5.1 Long-Term (24-Hour) Noise Measurement Results 5-1
Table of Contents (Cont.)
Section Page
6.0 Operational Noise Impacts .................................................................... 6-1
6.1 Stationary Source Noise Impacts 6-1
6.2 Recommended Operational Mitigation Measure 6-3
6.3 Recommended Project Design Features 6-3
List of Attachments
Exhibits
Location Map ........................................................................................................... A
Site Plan ................................................................................................................... B
Noise Monitoring Locations ...................................................................................... C
Noise Impact Results ................................................................................................. D
Project Noise Level Contours - Daytime ...................................................................... E
Project Noise Level Contours – Nighttime .................................................................. F
Tables
CEQA Noise Impact Criteria ....................................................................................... 1
Vibration Annoyance Potential Criteria ...................................................................... 2
Vibration Damage Potential Threshold Criteria ........................................................... 3
Suggested "n" Values Based on Soil Classes ................................................................ 4
City of Rosemead Exterior Noise Standards ................................................................ 5
HVAC Referenced Noise Levels .................................................................................. 6
24 Noise Measurements Results LT-1 ........................................................................ 7
24 Noise Measurements Results LT-2 ........................................................................ 8
Daytime Noise Impact Analysis .................................................................................. 9
Nighttime Noise Impact Analysis ............................................................................... 10
List of Attachments (Cont.)
Appendices
City of Rosemead Noise Element and Noise Ordinance ............................................. A
HVAC Specification Sheet ......................................................................................... B
Noise Measurement Data .......................................................................................... C
SoundPLAN Worksheets ............................................................................................ D
1-1
1.0 Introduction
1.1 Purpose of Analysis and Study Objectives
The purpose of this report is to evaluate the potential noise impacts from the proposed
Willard and Garvey Residential Development (hereinafter referred to as project) and provide
recommendations, if necessary, to minimize any project noise impacts. The assessment was
conducted within the context of the California Environmental Quality Act (CEQA) and
utilizes the noise standards set forth by the applicable Federal, State, and local agencies.
The following is provided in this report:
• A description of the study area and the proposed project
• Information regarding the fundamentals of noise
• Identification of the regulatory setting and applicable noise standards
• Analysis of the existing noise environment
• Summary of recommended mitigation measures and project design features to reduce
noise level impacts.
1.2 Site Location
The proposed Willard and Garvey Residential Developmental project site is located along
the west side of Willard Avenue, approximately 900 feet north of Garvey Avenue, in the
City of Rosemead, California. The project site is located approximately 270 feet above sea
level and is relatively flat.
Existing land uses surrounding the proposed project site include; residential uses to the
north and south, Willard Elementary School to the east and open space to the west.
The nearest existing noise-sensitive land uses are considered the residential properties
located adjacent to the project site and school located across Willard Avenue to the east.
The project site location map is provided in Exhibit A.
1-2
1.3 Project Description
The project proposes to construct and operate 31 multifamily residential units. The 1.20-
acre project site is currently occupied by two single family residential homes which will be
demolished as a part of the project.
The project requires a General Plan amendment to change the land use from Medium
Density Residential to High Density Residential land use and requires a zone change from
Light Multiple Residential (R-2) to Planned Development (PD).
Project construction noise impacts are assessed at each phase of construction and include
demolition, site preparation, grading, building construction, paving, and architectural
coating activities.
1.4 Summary of Analysis Results
Table 1 provides a summary of the noise analysis results, per the CEQA impact criteria
checklist. With the implementation of the recommended project design features, the
project is not expected to result in generation of a substantial temporary or permanent
increase in ambient noise levels in the vicinity of the project in excess of standards
established in the local general plan or noise ordinance, or applicable standards of other
agencies.
Table 1
CEQA Noise Impact Criteria
Noise Impact Criteria Potentially
Significant
Potentially
Significant
Unless
Mitigated
Less Than
Significant
Impact
No
Impact
Would the project result in?
a) Generation of a substantial temporary or
permanent increase in ambient noise levels in the
vicinity of the project in excess of standards
established in the local general plan or noise
ordinance, or applicable standards of other
agencies?
X
b) Generation of excessive groundborne vibration or
groundborne noise levels? X
c) For a project located within the vicinity of a
private airstrip or an airport land use plan or,
where such a plan has not been adopted, within
two miles of a public airport or public use
airport, would the project expose people residing
or working in the project area to excessive noise
levels?
X
1-3
1.5 Recommended Mitigation Measures
The following recommended mitigation measures are provided to help ensure the project’s
construction noise levels do not adversely impact the adjacent noise sensitive land uses:
MM-1 The final building plans shall ensure that HVAC units are not located within
an area of the project site that would contribute to a noise level exceedance
at any adjacent property line, per the City of Rosemead Municipal Code
requirements. To meet the City’s noise standards the following measures
should be followed:
• The combined noise level of all units operating simultaneously shall not
exceed 60 dB(A) during daytime hours (7 a.m. to 10 p.m.) and 45 dB(A)
during nighttime hours (10 p.m. to 7 a.m.).
• HVAC units should be rated at 76 dB or less.
1.6 Recommended Project Design Features
The following design features, while not generally considered mitigation under CEQA, are
provided to help ensure the project meets the City/State standards for interior noise
exposure within a residential dwelling. Design features included standard rules and
requirements and best practices that are provided for consideration as part of the
conditions of approval for the project.
DF-1 The project shall incorporate building construction techniques that achieve
the minimum interior noise standard of 45 dBA CNEL for all residential units.
DF-2 A “windows closed” condition is expected to be required for most residential
units within the project site to meet the interior noise standard. To
accommodate a windows closed conditions, all units shall be equipped with
adequate fresh air ventilation, per the requirements of the California Uniform
Building Code (UBC).
DF-3 The project shall comply with California Title 24 building insulation
requirements for exterior walls, roofs and common separating assemblies
(e.g. floor/ceiling assemblies and demising walls).
1-4
DF-4 For proper acoustical performance, all exterior windows, doors, and sliding
glass doors should have a positive seal and leaks/cracks must be kept to a
minimum.
DF-5 Delivery, loading/unloading activity, and trash pick-up hours should be
limited to daytime (7 a.m. – 10 p.m.) hours only.
DF-6 Limit engine idling time for all delivery vehicles and moving trucks to 5
minutes or less.
DF-7 Construction-related noise activities shall comply with the requirements set
forth in the City of Rosemead Municipal Code Section 8.36.030.
• Use of Heavy Equipment (dump trucks, graders, jack hammers, etc. are
only permitted Monday through Saturday from 7:00 a.m. to 8:00 p.m.
• No work is permitted on Sundays or Federal Holidays
• Work, as used in the section, includes all preparation, cleanup and
material deliveries.
DF-8 To help further reduce construction noise levels, the project should prepare a
construction management plan to be approved by the City of Rosemead
prior to initiating construction. The construction management plan would
include best management practices to reduce construction noise levels. Best
management practices may include the following:
• All construction equipment shall be equipped with mufflers and other
suitable noise attenuation devices (e.g., engine shields).
• Grading and construction contractors shall use quieter equipment as
opposed to noisier equipment (such as rubber-tired equipment rather
than track equipment), where feasible.
• If feasible, electric hook-ups shall be provided to avoid the use of
generators. If electric service is determined to be infeasible for the site,
only whisper-quiet generators shall be used (i.e., inverter generators
capable of providing variable load.
1-5
• Use electric air compressors and similar power tools rather than diesel
equipment, where feasible.
• Locate staging area, generators and stationary construction
equipment as far from the adjacent residential homes as feasible.
• Construction-related equipment, including heavy-duty equipment,
motor vehicles, and portable equipment, shall be turned off when not
in use for more than 5 minutes.
• Post a sign in a readily visible location at the project site that indicates
the dates and duration of construction activities, as well as provide a
telephone number where residents can inquire about the construction
process and register noise complaints to an assigned construction
manager.
2-1
2.0 Fundamentals of Noise
This section of the report provides basic information about noise and presents some of the
terms used within the report.
2.1 Sound, Noise and Acoustics
Sound is a disturbance created by a moving or vibrating source and is capable of being
detected by the hearing organs. Sound may be thought of as mechanical energy of a
moving object transmitted by pressure waves through a medium to a human ear. For
traffic, or stationary noise, the medium of concern is air. Noise is defined as sound that is
loud, unpleasant, unexpected, or unwanted.
2.2 Frequency and Hertz
A continuous sound is described by its frequency (pitch) and its amplitude (loudness).
Frequency relates to the number of pressure oscillations per second. Low-frequency sounds
are low in pitch (bass sounding) and high-frequency sounds are high in pitch (squeak).
These oscillations per second (cycles) are commonly referred to as Hertz (Hz). The human
ear can hear from the bass pitch starting out at 20 Hz all the way to the high pitch of
20,000 Hz.
2.3 Sound Pressure Levels and Decibels
The amplitude of a sound determines it loudness. The loudness of sound increases or
decreases, as the amplitude increases or decreases. Sound pressure amplitude is measured
in units of micro-Newton per square inch meter (N/m2), also called micro-Pascal (μPa).
One μPa is approximately one hundred billionths (0.00000000001) of normal atmospheric
pressure. Sound pressure level (SPL or Lp) is used to describe in logarithmic units the ratio
of actual sound pressures to a reference pressure squared. These units are called decibels
and abbreviated dB.
2.4 Addition of Decibels
Because decibels are on a logarithmic scale, sound pressure levels cannot be added or
subtracted by simple plus or minus addition. When two (2) sounds of equal SPL are
combined, they will produce an SPL 3 dB greater than the original single SPL.
In other words, sound energy must be doubled to produce a 3 dB increase.
2-2
If two (2) sounds differ by approximately 10 dB the higher sound level is the predominant
sound.
2.5 Human Response to Changes in Noise Levels
In general, the healthy human ear is most sensitive to sounds between 1,000 Hz and
5,000 Hz, (A-weighted scale) and it perceives a sound within that range as being more
intense than a sound with a higher or lower frequency with the same magnitude. For
purposes of this report as well as with most environmental documents, the A-scale
weighting is typically reported in terms of A-weighted decibel (dBA). Typically, the human
ear can barely perceive the change in noise level of 3 dB. A change in 5 dB is readily
perceptible, and a change in 10 dB is perceived as being twice or half as loud1. As
previously discussed, a doubling of sound energy results in a 3 dB increase in sound, which
means that a doubling of sound energy (e.g. doubling the volume of traffic on a highway),
would result in a barely perceptible change in sound level.
2.6 Noise Descriptors
Noise in our daily environment fluctuates over time. Some noise levels occur in regular
patterns, others are random. Some noise levels are constant, while others are
sporadic. Noise descriptors were created to describe the different time-varying noise levels.
Following are the most commonly used noise descriptors along with brief definitions.
A-Weighted Sound Level
The sound pressure level in decibels as measured on a sound level meter using the
A-weighted filter network. The A-weighting filter de-emphasizes the very low and very
high frequency components of the sound in a manner similar to the response of the
human ear. A numerical method of rating human judgment of loudness.
Ambient Noise Level
The composite of noise from all sources, near and far. In this context, the ambient noise
level constitutes the normal or existing level of environmental noise at a given location.
1 Source: U.S. DOT Federal Highway Administration. Dec. 2011. Highway Traffic Noise: Analysis and
Abatement Guidance.
2-3
Community Noise Equivalent Level (CNEL)
The average equivalent A-weighted sound level during a 24-hour day, obtained after
addition of five (5) decibels to sound levels in the evening from 7:00 to 10:00 PM and
after addition of ten (10) decibels to sound levels in the night before 7:00 AM and after
10:00 PM.
Decibel (dB)
A unit for measuring the amplitude of a sound, equal to 20 times the logarithm to the
base 10 of the ratio of the pressure of the sound measured to the reference pressure,
which is 20 micro-pascals.
dB(A)
A-weighted sound level (see definition above).
Equivalent Sound Level (LEQ)
The sound level corresponding to a steady noise level over a given sample period with the
same amount of acoustic energy as the actual time varying noise level. The energy average
noise level during the sample period.
Habitable Room
Any room meeting the requirements of the Uniform Building Code or other applicable
regulations which is intended to be used for sleeping, living, cooking or dining purposes,
excluding such enclosed spaces as closets, pantries, bath or toilet rooms, service rooms,
connecting corridors, laundries, unfinished attics, foyers, storage spaces, cellars, utility
rooms, and similar spaces.
L(n)
The A-weighted sound level exceeded during a certain percentage of the sample time. For
example, L10 is the sound level exceeded 10 percent of the sample time. Similarly L50, L90
and L99, etc.
2-4
Noise
Any unwanted sound or sound which is undesirable because it interferes with speech and
hearing, or is intense enough to damage hearing, or is otherwise annoying. The State
Noise Control Act defines noise as "...excessive undesirable sound...".
Outdoor Living Area
Outdoor spaces that are associated with residential land uses typically used for passive
recreational activities or other noise-sensitive uses. Such spaces include patio areas,
barbecue areas, jacuzzi areas, etc. associated with residential uses; outdoor patient
recovery or resting areas associated with hospitals, convalescent hospitals, or rest homes;
outdoor areas associated with places of worship which have a significant role in services or
other noise-sensitive activities; and outdoor school facilities routinely used for educational
purposes which may be adversely impacted by noise. Outdoor areas usually not included in
this definition are: front yard areas, driveways, greenbelts, maintenance areas and storage
areas associated with residential land uses; exterior areas at hospitals that are not used for
patient activities; outdoor areas associated with places of worship and principally used for
short-term social gatherings; and, outdoor areas associated with school facilities that are
not typically associated with educational uses prone to adverse noise impacts (for example,
school play yard areas).
Percent Noise Levels
See L(n).
Sound Level (Noise Level)
The weighted sound pressure level obtained by use of a sound level meter having a
standard frequency-filter for attenuating part of the sound spectrum.
Sound Level Meter
An instrument, including a microphone, an amplifier, an output meter, and frequency
weighting networks for the measurement and determination of noise and sound levels.
2-5
Single Event Noise Exposure Level (SENEL)
The dBA level which, if it lasted for one (1) second, would produce the same A-weighted
sound energy as the actual event.
2.7 Sound Propagation
As sound propagates from a source it spreads geometrically. Sound from a small, localized
source (i.e., a point source) radiates uniformly outward as it travels away from the source in
a spherical pattern. The sound level attenuates at a rate of 6 dB per doubling of distance.
The movement of vehicles down a roadway makes the source of the sound appear to
propagate from a line (i.e., line source) rather than a point source. This line source results
in the noise propagating from a roadway in a cylindrical spreading versus a spherical
spreading that results from a point source. The sound level attenuates for a line source at a
rate of 3 dB per doubling of distance.
As noise propagates from the source, it is affected by the ground and atmosphere. Noise
models use hard site (reflective surfaces) and soft site (absorptive surfaces) to help calculate
predicted noise levels. Hard site conditions assume no excessive ground absorption
between the noise source and the receiver. Soft site conditions such as grass, soft dirt or
landscaping attenuate noise at an additional rate of 1.5 dB per doubling of distance.
When added to the geometric spreading, the excess ground attenuation results in an
overall noise attenuation of 3 dB per doubling of distance for a line source and 6.0 dB per
doubling of distance for a point source.
2-6
Figure 1
Typical Sound Levels from Indoor and Outdoor Noise Sources2
2 Source: AAHSTO. 1993. Guide on Evaluation and Abatement of Traffic Noise
2-7
2.8 Vibration Descriptors
Ground-borne vibrations consist of rapidly fluctuating motions within the ground that have
an average motion of zero. The effects of ground-borne vibrations typically only cause a
nuisance to people, but at extreme vibration levels, damage to buildings may occur.
Although ground-borne vibration can be felt outdoors, it is typically only an annoyance to
people indoors where the associated effects of the shaking of a building can be notable.
Ground-borne noise is an effect of ground-borne vibration and only exists indoors since it is
produced from noise radiated from the motion of the walls and floors of a room and may
also consist of the rattling of windows or dishes on shelves.
Several different methods are used to quantify vibration amplitude.
PPV
Known as the peak particle velocity (PPV) which is the maximum instantaneous peak in
vibration velocity, typically given in inches per second.
RMS
Known as the root mean squared (RMS) can be used to denote vibration amplitude.
VdB
A commonly used abbreviation to describe the vibration level (VdB) for a vibration source.
2.9 Vibration Perception
Typically, developed areas are continuously affected by vibration velocities of 50 VdB or
lower. These continuous vibrations are not noticeable to humans whose threshold of
perception is around 65 VdB. Outdoor sources that may produce perceptible vibrations are
usually caused by construction equipment, steel-wheeled trains, and traffic on rough roads,
while smooth roads rarely produce perceptible ground-borne noise or vibration. To
counter the effects of ground-borne vibration, the Federal Transit Administration (FTA) has
published guidance relative to vibration impacts. According to the FTA, fragile buildings
can be exposed to ground-borne vibration levels of 0.3 inches per second without
experiencing structural damage.
2-8
2.10 Vibration Propagation
There are three main types of vibration propagation: surface, compression, and shear
waves. Surface waves, or Rayleigh waves, travel along the ground's surface. These waves
carry most of their energy along an expanding circular wavefront, similar to ripples
produced by throwing a rock into a pool of water. P-waves, or compression waves, are
body waves that carry their energy along an expanding spherical wavefront. The particle
motion in these waves is longitudinal (i.e., in a "push-pull" fashion). P-waves are analogous
to airborne sound waves. S-waves, or shear waves, are also body waves that carry energy
along an expanding spherical wavefront. However, unlike P-waves, the particle motion is
transverse, or side-to-side and perpendicular to the direction of propagation.
As vibration waves propagate from a source, the vibration energy decreases in a
logarithmic nature and the vibration levels typically decrease by 6 VdB per doubling of the
distance from the vibration source. As stated above, this drop-off rate can vary greatly
depending on the soil but has been shown to be effective enough for screening purposes,
in order to identify potential vibration impacts that may need to be studied through actual
field tests.
2.11 Construction Related Vibration Level Prediction
Operational activities are separated into two different categories. The vibration can be
transient or continuous in nature. Each category can result in varying degrees of ground
vibration, depending on the equipment used on the site. Operation of equipment causes
ground vibrations that spread through the ground and diminish in strength with distance.
Buildings in the vicinity of the project area site respond to these vibrations with varying
results ranging from no perceptible effects at the low levels to slight damage at the highest
levels. The thresholds from Caltrans Transportation and Construction Induced Vibration
Guidance Manual in the table below provide general guidelines as to the maximum
vibration limits for when vibration becomes potentially annoying.
2-9
Table 2
Vibration Annoyance Potential Criteria
Human Response
PPV (in/sec)
Transient Sources Continuous/Frequent
Intermittent Sources
Barely perceptible 0.04 0.01
Distinctly perceptible 0.25 0.04
Strongly perceptible 0.90 0.10
Severe 2.00 0.40
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.
The Caltrans Transportation and Construction Induced Vibration Guidance Manual provides
general thresholds and guidelines as to the vibration damage potential from vibratory
impacts. The table below provides general vibration damage potential thresholds:
Table 3
Vibration Damage Potential Threshold Criteria
Structure and Condition
PPV (in/sec)
Transient Sources Continuous/Frequent
Intermittent Sources
Extremely fragile historic buildings ruin ancient
monuments 0.12 0.08
Fragile buildings 0.20 0.10
Historic and some old buildings 0.50 0.25
Older residential structures 0.50 0.30
New residential structures 1.00 0.50
Modern industrial/commercial buildings 2.00 0.50
Soil conditions have an impact on how vibration propagates through the ground. The
Caltrans Transportation and Construction Induced Vibration Guidance Manual provides
suggested “n” values based on soil class. The table below outlines the manual’s suggested
values and description.
2-10
Table 4
Suggested "n" Values Based on Soil Classes
Soil Class Description of Soil Material Suggested Value of "n"
I
Weak or soft soils: loose soils, dry or partially
saturated peat and muck, mud, loose beach sand,
and dune sand.
1.4
II Most sands, sandy clays, silty clays, gravel, silts,
weathered rock. 1.3
III
Hard soils: densely compacted sand, dry
consolidated clay, consolidated glacial till, some
exposed rock.
1.1
IV Hard, component rock: bedrock, freshly exposed
hard rock. 1.0
3-1
3.0 Regulatory Setting
The proposed project is located in the City of Rosemead and noise regulations are
addressed through the various federal, state, and local government agencies. The agencies
responsible for regulating noise are discussed below.
3.1 Federal Regulations
The adverse impact of noise was officially recognized by the federal government in the
Noise Control Act of 1972, which serves three (3) purposes:
• Publicize noise emission standards for interstate commerce
• Assist state and local abatement efforts
• Promote noise education and research
The Federal Office of Noise Abatement and Control (ONAC) was originally tasked with
implementing the Noise Control Act. However, it was eventually eliminated leaving other
federal agencies and committees to develop noise policies and programs. Some examples
of these agencies are as follows: The Department of Transportation (DOT) assumed a
significant role in noise control through its various agencies. The Federal Aviation Agency
(FAA) is responsible to regulate noise from aircraft and airports. The Federal Highway
Administration (FHWA) is responsible to regulate noise from the interstate highway system.
The Occupational Safety and Health Administration (OSHA) is responsible for the
prohibition of excessive noise exposure to workers.
The Federal government and the State advocate that local jurisdiction use their land use
regulatory authority to arrange new development in such a way that “noise sensitive” uses
are either prohibited from being constructed adjacent to a highway or, or alternatively that
the developments are planned and constructed in such a manner that potential noise
impacts are minimized.
Since the Federal government and the State have preempted the setting of standards for
noise levels that can be emitted by the transportation source, the City is restricted to
regulating the noise generated by the transportation system through nuisance abatement
ordinances and land use planning.
3-2
3.2 State Regulations
Established in 1973, the California Department of Health Services Office of Noise Control
(ONC) was instrumental in developing regularity tools to control and abate noise for use by
local agencies. One significant model is the “Land Use Compatibility for Community Noise
Environments Matrix.” The matrix allows the local jurisdiction to clearly delineate
compatibility of sensitive uses with various incremental levels of noise.
The State of California has established noise insulation standards as outlined in Title 24 and
the Uniform Building Code (UBC) which in some cases requires acoustical analyses to
outline exterior noise levels and to ensure interior noise levels do not exceed the interior
threshold. The State mandates that the legislative body of each county and city adopt a
noise element as part of its comprehensive general plan. The local noise element must
recognize the land use compatibility guidelines published by the State Department of
Health Services. The guidelines rank noise land use compatibility in terms of normally
acceptable, conditionally acceptable, normally unacceptable, and clearly unacceptable.
Noise insulation design standards for multi-family residences have been established by the
State of California Uniform Building Code (UBC) Chapter 12, Division II and by the Title 24
noise insulation standards of the California Administrative Code. The City is required by the
State Housing Law to adopt these State codes as minimum performance standards.
3.3 City of Rosemead Noise Regulations
The City of Rosemead outlines their noise regulations and standards within the Chapter 6
Noise of the General Plan, Chapter 8.36 - Noise Control of the Municipal Code. The noise
standards from the General Plan and Municipal code are provided in Appendix A.
3.3.1 City of Rosemead General Plan
The City of Rosemead General Plan Noise Element addresses noise goals and policies,
implementation programs, compatibility guidelines and roadway noise levels. Goals and
policies that apply to the proposed project include:
GOAL 1: Effective incorporation of noise considerations into land use
planning decisions.
• Policy 1.1: Ensure compliance with standards for interior and exterior noise
established within the Noise Element and Zoning Code.
3-3
• Policy 1.2: Require new multiple-family residential development to comply with
State regulations if they are to be located in areas where ambient
noise levels exceed 60 dB.
• Policy 1.3: Periodically review and update the Existing Noise Contours Map to
ensure that any future noise increases not considered in the Noise
Element will be identified.
• Policy 1.4: Encourage acoustical design in new construction.
• Policy 1.5: Require sound walls to be constructed in designated mixed-use
districts where noise-sensitive land uses are located on adjacent
properties.
GOAL 3: Effective implementation of measures to control non-
transportation noise impacts.
• Policy 3.1: Enforce provisions of the Community Noise Ordinance to mitigate
noise conflicts.
• Policy 3.2: Require that potential sources of noise be considered when approving
new development to reduce the possibility of adverse effects.
• Policy 3.3: Evaluate noise generated by construction activities to ensure
compliance with the Community Noise Ordinance.
• Policy 3.4: Establish and maintain coordination among the City departments
involved in noise abatement.
The General Plan Noise Element also contains noise compatibility guidelines that indicate
the acceptability of noise exposure levels for different land uses. The Noise Element
indicates that projects should incorporate noise mitigation measures if they will exceed
normally acceptable levels as defined by the guidelines.
3.3.2 City of Rosemead Municipal Code
Chapter 8.36, Noise Control, in the Rosemead Municipal Code describes the noise
regulations for controlling unnecessary, excessive and annoying sounds in residential areas
3-4
that is received on residential property occupied by another person. The noise standards
apply to all properties within a residential zone and sensitive uses (i.e. Willard Elementary
School).
As it relates to this project, the Municipal Code noise regulations are used to evaluate
offending on-site operational noise sources and on-site construction activity.
Table 3 shows the City of Rosemead Noise Standards, per Section 8.36 in the Municipal
Code.
Table 5
City of Rosemead
Municipal Code Noise Control Standards
Location Time Period Noise
Standard1 L50
(30-min)
L25
(15-min)
L8
(5-min)
L2
(1-min)
LMAX
(any time)
EXTERIOR
Daytime
(7am - 10pm) 60 dBA 60 dBA
(--)
65 dBA
(+5)
70 dBA
(+10)
75 dBA
(+15)
80 dBA
(+20)
Nighttime
(10pm – 7am) 45 dBA 45 dBA
(--)
50 dBA
(+5)
55 dBA
(+10)
60 dBA
(+15)
65 dBA
(+20)
1 In the event the ambient noise level exceeds any of the first three noise limit categories above, the
cumulative period applicable to said category shall be increased to reflect ambient noise level. In the event
the ambient noise level exceeds the third noise limit category, the maximum allowable noise level under
said category shall be increased to reflect the maximum ambient noise level.
Construction Noise Regulation
Section 8.36.030 of the City’s municipal code states that the noise from the following
activities shall be exempted from the provisions of the noise code, provided;
“Noise sources associated by construction, repair, remodeling or grading of any real
property or during authorized seismic surveys, provided such activities do not take place
between the hours of eight p.m. and seven a.m. on weekdays, including Saturday, or at
any time on Sunday or a federal holiday, and provided the noise level created by such
activities does not exceed the noise standard of sixty-five (65) dBA plus the limits specified
in Section 8.36.060(B) as measured on residential property and does not endanger the
public health, welfare and safety.”
3-5
3.4 Thresholds of Significance
The CEQA Guidelines do not define the levels at which temporary and permanent increases
in ambient noise are considered “substantial”, and therefore for the purposes of this
analysis, noise impacts would be considered to be potentially significant if the proposed
project results in the following:
• A permanent (i.e., long term operational) increase of 5 dBA CNEL over ambient
noise levels at any existing noise-sensitive land use
• A permanent (i.e., long term operational) increase of 3 dBA CNEL over ambient
noise levels at any existing noise-sensitive land use location where the future
resulting noise level would exceed 65 dBA CNEL (i.e., the noise levels would be
considered unacceptable for noise-sensitive uses)
4-1
4.0 Study Method and Procedures
The following section describes the measurement procedures, measurement locations, and
noise modeling procedures and assumptions used in the noise analysis.
4.1 Measurement Procedures and Criteria
Noise measurements are taken to determine the existing noise levels. A noise receiver or
receptor is any location in the noise analysis in which noise might produce an impact. The
following criteria are used to select measurement locations and receptors:
• Locations expected to receive the highest noise impacts, such as the first row of
houses
• Locations that are acoustically representative and equivalent of the area of concern
• Human land usage
• Sites clear of major obstruction and contamination
RK conducted the sound level measurements in accordance with Caltrans technical noise
specifications. All measurement equipment meets American National Standards Institute
(ANSI) specifications for sound level meters (S1.4-1983 identified in Chapter
19.68.020.AA).
A Piccolo-II Type 2 integrating-averaging sound level meter was used to conduct long-term
(24-hour) noise measurements at the project site and property boundaries.
The Leq, Lmin, Lmax, L2, L8, L25, and L50 statistical data were recorded over the
measurement time period intervals and the information was utilized to define the noise
characteristics for the project. The following gives a brief description of the Caltrans
Technical Noise Supplement procedures for sound level measurements:
• Microphones for sound level meters were placed ten (10) feet above ground for
long-term noise measurements
• Sound level meters were calibrated before and after each measurement
• Following the calibration of equipment, a windscreen was placed over the
microphone
• Frequency weighting was set on “A” and slow response
• Temperature and sky conditions were observed and documented
4-2
Appendix B includes photos, field sheets, and measured noise data.
4.2 Stationary Noise Modeling
On-site stationary noise sources were analyzed using SoundPLAN™ noise modeling
software. SoundPLAN™ is a standards-based program that incorporates more than twenty
national and international noise modeling guidelines. This project consists of parking lot
noise and stationary noise sources which are classified under industrial sources.
Projected noise levels from SoundPLAN™ are based on the following key parameters:
• Developing three-dimensional noise models of the project,
• Predicting the project noise levels at the selected community locations and
• Comparing the predicted noise with the existing community ambient noise levels
at the receptor locations.
The sides of the buildings, walls, etc. were modeled as reflective surfaces and also as
diffractive bodies. The noise sources are shown as red spheres (point sources) and red
surfaces (area sources). A light blue line outlines the perimeter of each operation. The
surrounding roads are displayed as grey surfaces.
Most of the ground within the project site and adjacent areas are covered with paved
surfaces and field grass and will be run as a hard site to be conservative (Ground
Factor=0). The Effective Flow Resistivity for field grass is SoundPLAN default. The elevation
profile for the project site is derived from Google Earth and all the receptors are placed at 5
foot above the ground level.
Reference Spectrum
SoundPLAN provides over 500 sound source spectra in third octaves and octaves from an
open source library. These spectra were compiled from various sources (handbooks,
literature, etc.).
The referenced spectrum is input into the project library and used as a reference spectrum
normed to produce 76 dBA. The referenced noise level decibel value (described in Table 6)
is used in conjunction with the reference spectrum to produce a valid emission.
4-3
Sound Power and Sound Pressure Level
Sound power level is the acoustic energy emitted by a source which produces a sound
pressure level at some distance. While the sound power level of a source is fixed, the sound
pressure level depends upon the distance from the source and the acoustic characteristics
of the area in which it is located.
SoundPLAN requires that the source noise level be input using sound power level. The
sound power level is calculated using SoundPLAN software by calibrating the source noise
level to equal the sound pressure level at an equal distance from the source in which the
referenced measurement was taken.
4.2.1 HVAC Equipment Noise
The project is proposing to use LENNOX ML14XC1 or equal Air Conditioner units. In order
to determine the future noise levels from a/c units, RK requested the specification sheet
from the applicant and obtained the referenced noise level of the proposed a/c units. Table
6 indicates the referenced noise levels for on-site stationary noise sources. The manufacture
spec sheet is shown in Appendix B.
Table 6
HVAC Referenced Noise Levels1
Source1
Noise Levels (dBA)
Leq
HVAC Equipment 76
To estimate the future noise levels during typical operational conditions, referenced noise
levels are input into SoundPLAN and projected to the nearest sensitive receptor locations.
Adjusted noise levels are based on the distance of the receptor location relative to the noise
source, local topography and physical barriers including buildings and sound walls. The noise
levels assume that the stationary sources are operating continuously during both daytime and
nighttime hours, when in reality will likely operate only intermittently throughout daily
operations.
5-1
5.0 Existing Noise Environment
The existing noise environment for the project site and surrounding areas has been
established based on noise measurement data collected by RK. Noise measurement data
indicates that traffic noise propagating from the adjacent roadways, as well as activities
from the surrounding properties are the main sources of ambient noise at the project site
and surrounding area.
5.1 Long-Term (24-Hour) Noise Measurement Results
To determine the existing noise level environment, RK conducted two (2) 24-hour noise
measurements at the project study area. Noise levels were measured on March 4th and
March 5th, 2020 using a Piccolo-II Type 2 integrating-averaging sound level meter. The
information was utilized to establish the noise characteristics of the existing ambient
environment.
The noise monitoring locations were selected based on the proximity and location to
adjacent sensitive receptors. Exhibit C graphically illustrates the location of the long-term
measurements.
• Long-term noise monitoring location one (LT-1) was taken at approximately 15 feet
from the northern property line and approximately 80 feet from the centerline of
the Willard Avenue.
• Long-term noise monitoring location two (LT-2) was taken at approximately 30 feet
from the southern property line and approximately 230 feet from the centerline of
the Willard Avenue.
Long term noise monitoring locations represent the existing noise levels near the adjacent
noise sensitive land uses. Long-term noise measurement results are summarized in Tables 7
and 8. Appendix C includes photographs, field sheets and measured noise data.
5-2
Table 7
24 Noise Measurement Results LT-11
Time Leq (dBA) Time Leq (dBA)
12:00 AM 45.6 12:00 PM 49.6
1:00 AM 38.1 1:00 PM 47.6
2:00 AM 45.0 2:00 PM 50.3
3:00 AM 51.5 3:00 PM 50.7
4:00 AM 50.8 4:00 PM 51.7
5:00 AM 49.4 5:00 PM 49.3
6:00 AM 50.4 6:00 PM 47.9
7:00 AM 52.2 7:00 PM 47.3
8:00 AM 51.9 8:00 PM 45.5
9:00 AM 51.2 9:00 PM 47.4
10:00 AM 52.1 10:00 PM 45.7
11:00 AM 48.7 11:00 PM 44.7
24-Hour CNEL 55.1
1 LT-1 was taken at approximately 15 feet from the northern property line and approximately 80 feet from the
centerline of the Willard Avenue. LT-1 was recorded on 03/04/2020.
Table 8
24 Noise Measurement Results, LT-21
Time Leq (dBA) Time Leq (dBA)
12:00 AM 49.6 12:00 PM 45.0
1:00 AM 44.4 1:00 PM 45.5
2:00 AM 50.4 2:00 PM 50.4
3:00 AM 55.1 3:00 PM 50.5
4:00 AM 55.0 4:00 PM 50.1
5:00 AM 54.2 5:00 PM 46.3
6:00 AM 52.6 6:00 PM 49.8
7:00 AM 51.4 7:00 PM 49.4
8:00 AM 51.0 8:00 PM 44.6
9:00 AM 47.3 9:00 PM 48.0
10:00 AM 52.0 10:00 PM 46.8
11:00 AM 48.2 11:00 PM 46.7
24-Hour CNEL 58.2
1 LT-2 was taken at approximately 30 feet from the southern property line and approximately 230 feet from
the centerline of the Willard Avenue. LT-2 was recorded on 03/04/2020.
6-1
6.0 Operational Noise Impacts
This assessment analyzes the anticipated noise levels generated by the project and impacts
caused by changes to the ambient environment as a result of operational activities. The
main sources of operational noise generated by the project would include on-site activities
from HVAC equipment. Noise level impacts are compared to the City of Rosemead noise
standards.
The project must demonstrate that noise levels generated by the project site would not be
in excess of standards established in the local general plan or noise ordinance, or applicable
standards of other agencies.
6.1 Stationary Source Noise Impacts
On-site stationary noise impacts are assessed at all adjacent property lines surrounding the
project site. Existing land uses surrounding the proposed project site include; existing
residential uses to the north and south, open space to the east, school/institutional use to
the west.
Project operational activities are analyzed for long-term noise impacts associated with the
day to day operation of the project; including mechanical HVAC equipment to the nearest
adjacent property lines.
The project is proposing to construct a six (6) foot noise barrier wall along the northern,
southern and western property line of the project and the noise study has taken the
proposed wall into account during the analysis as a noise barrier.
HVAC equipment will be generally located on the exterior ground floor area of each unit.
The closest HVAC units are expected to be located approximately eight (8) feet from the
northern property line, approximately nine (9) feet from the southern property line,
approximately ten (10) feet from the eastern property line and approximately twenty (20)
feet from the western property line.
SoundPLAN calculation worksheets are shown in Appendix D.
6-2
Daytime Stationary Source Noise Impacts
The results of the daytime noise impact analysis are shown in the Tables 9 and are
graphically illustrated on Exhibit E.
The noise analysis considers all project noise sources operating simultaneously during
daytime (7 a.m. to 10 p.m.) hours at the nearest adjacent property lines.
Based on the results of this analysis, noise levels generated by the project are not expected
to exceed the City’s daytime noise standards of 60 dBA at the adjacent property lines.
The change in existing daytime ambient noise levels as a result of the project would be
approximately 0.7 dBA Leq to 7.1 dBA Leq during the daytime hours (7 a.m. to 10 p.m.).
Typically, the human ear can barely perceive the change in the noise level of 5 dB, and
therefore the impact is considered perceptible and more than significant.
Nighttime Stationary Source Noise Impacts
The results of the nighttime noise impact analysis are shown in the Tables 10 and are
graphically illustrated on Exhibit F.
The nighttime noise analysis considers all project noise sources operating simultaneously
during nighttime (10 p.m. to 7 a.m.) hours.
The noise standard for all noise sensitive residential uses located to the north and south of
the project site is established to be 45 dBA from 10 p.m. to 7 a.m. No noise analysis has
been conducted to the receptor the east and west as they are not expected to be in
operation during the nighttime hours.
Noise levels generated by the project are not expected to exceed the City’s nighttime noise
standards at the adjacent property lines with an exception of southern property line.
The change in existing nighttime ambient noise levels as a result of the project would be
approximately 2.1 dBA to 14.5 dBA Leq during the nighttime hours (10 p.m. to 7 a.m.).
Typically, the human ear can barely perceive the change in the noise level of 5 dB, and
therefore the impact is considered perceptible and more than significant.
6-3
6.2 Recommended Operational Mitigation Measures
MM-1 The final building plans shall ensure that HVAC units are not located within
an area of the project site that would contribute to a noise level exceedance
at any adjacent property line, per the City of Rosemead Municipal Code
requirements. To meet the City’s noise standards the following measures
should be followed:
• The combined noise level of all units operating simultaneously shall not
exceed 60 dB(A) during daytime hours (7 a.m. to 10 p.m.) and 45 dB(A)
during nighttime hours (10 p.m. to 7 a.m.).
• HVAC units should be rated at 76 dB or less.
6.3 Recommended Project Design Features
The following design features, while not generally considered mitigation under CEQA, are
provided to help ensure the project meets the City/State standards for interior noise
exposure within a residential dwelling. Design features included standard rules and
requirements and best practices that are provided for consideration as part of the
conditions of approval for the project.
DF-1 The project shall incorporate building construction techniques that achieve
the minimum interior noise standard of 45 dBA CNEL for all residential units.
DF-2 A “windows closed” condition is expected to be required for all residential
units within the project site to meet the interior noise standard. To
accommodate a windows closed conditions, all units shall be equipped with
adequate fresh air ventilation, per the requirements of the California Uniform
Building Code (UBC).
DF-3 The project shall comply with California Title 24 building insulation
requirements for exterior walls, roofs and common separating assemblies
(e.g. floor/ceiling assemblies and demising walls).
DF-4 For proper acoustical performance, all exterior windows, doors, and sliding
glass doors should have a positive seal and leaks/cracks must be kept to a
minimum.
6-4
DF-5 Delivery, loading/unloading activity, and trash pick-up hours should be
limited to daytime (7 a.m. – 10 p.m.) hours only.
DF-6 Limit engine idling time for all delivery vehicles and moving trucks to 5
minutes or less.
LocationReceiver at PL-1 School East 51.6 No 45.5 52.6 7.1 YesReceiver at PL-2 School East 51.3 No 45.5 52.3 6.8 YesReceiver at PL-3 Residential North 43.2 No 45.5 47.5 2.0 NoReceiver at PL-4 Residential North 38.0 No 45.5 46.2 0.7 NoReceiver at PL-5 Residential South 52.4 No 45.5 53.2 7.7 YesReceiver at PL-6 Residential South 42.4 No 44.6 46.6 2.0 NoReceiver at PL-7 Open-Space West 44.4 60.0 No 44.6 47.5 2.9 No Change in Noise Level as a Result of Project (dBA)SignificantImapact (?)1 Lowest Daytime Measured Leq60.060.0TABLE 9Willard and Garvey Residential DevelopmentDaytime Noise Impact Analysis (dBA)ReceptorDaytime Exterior Noise Level dBA1Project Noise Contribution(Leq)City of RosemeadNoise Level Criteria(Leq)Noise Level Exceeds Standard (?)Land UseExisting Ambient Measurement(Leq)1Combined Noise LevelExisting Plus Project(Leq)
LocationReceiver at PL-3 Residential North 43.2 No 38.1 44.4 6.3 YesReceiver at PL-4 Residential North 38.0 No 38.1 41.1 3.0 NoReceiver at PL-5 Residential South 52.4 Yes 38.1 52.6 14.5 YesReceiver at PL-6 Residential South 42.4 No 44.4 46.5 2.1 NoExisting Ambient Measurement(Leq)1Combined Noise LevelExisting Plus Project(Leq)Change in Noise Level as a Result of Project (dBA)SignificantImapact (?)45.01 Lowest nighttime Measured LeqTABLE 10Willard and Garvey Residential DevelopmentNighttime Noise Impact Analysis (dBA)Receptor Land UseNighttime Exterior Noise Level dBA1Project Noise Contribution(Leq)City of RosemeadNoise Level Criteria(Leq)Noise Level Exceeds Standard (?)
Exhibits
engineeringgroup, inc.engineeringNLocation MapExhibit ALegend:= Project Site BoundaryWILLARD & GARVEY RESIDENTIAL DEVELOPMENT NOISE IMPACT STUDY, City of Rosemead, CA1445-2019-02SITE
engineeringgroup, inc.engineering
NN
Site PlanExhibit B
WILLARD & GARVEY RESIDENTIAL DEVELOPMENT NOISE IMPACT STUDY, City of Rosemead, CA
1445-2019-02
engineeringgroup, inc.engineeringNNoise Monitoring LocationsExhibit CWILLARD & GARVEY RESIDENTIAL DEVELOPMENT NOISE IMPACT STUDY, City of Rosemead, CA1445-2019-02SITELT-1LT-2Legend:= Long Term (24-Hr) Noise Monitoring LocationLT-1
engineeringgroup, inc.SoundPLAN Project Noise Level ResultsExhibit DWILLARD & GARVEY RESIDENTIAL DEVELOPMENT NOISE IMPACT STUDY, City of Rosemead, CA1445-2019-02
engineeringgroup, inc.Project Noise Level Contours - DaytimeExhibit EWILLARD & GARVEY RESIDENTIAL DEVELOPMENT NOISE IMPACT STUDY, City of Rosemead, CA1445-2019-02
engineeringgroup, inc.Project Noise Level Contours - NighttimeExhibit FWILLARD & GARVEY RESIDENTIAL DEVELOPMENT NOISE IMPACT STUDY, City of Rosemead, CA1445-2019-02
Appendices
Appendix A
City of Rosemead
General Plan and Municipal Code Noise Standards
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Chapter 8.36 - NOISE CONTROL
8.36.010 - Policy.
In order to control unnecessary, excessive and annoying noise in the city, it is declared to be the policy of the city to
prohibit such noise generated from any sources as specified in this chapter. It is determined that certain noise levels are
detrimental to the public health, welfare and safety, and contrary to public interest, and therefore, the City Council does
ordain and declare that creating, maintaining, causing or allowing to be created, caused or maintained any noise in a manner
prohibited by or not in conformity with the provisions of this chapter, is a public nuisance and shall be punishable as such.
(Prior code § 4301)
8.36.020 - De nitions.
All terminology used in this chapter, not defined below, shall be in conformance with applicable publications of the
American National Standards Institute (ANSI) or its successor body.
The following words, phrases and terms are for the purpose of this chapter and shall have the meanings as indicated
below:
"Agricultural property" means a parcel of real property which is undeveloped for any use other than agricultural
purposes, including any residence located thereon.
"Ambient noise level" means the all-encompassing noise level associated with a given environment, being a composite of
sounds from all sources, excluding the alleged offensive noise, occasional or occasional and transient sources, at the location
and approximate time at which a comparison with the alleged offensive noise is to be made.
"A weighted sound level" means the total sound level in decibels of all sound as measured with a sound level meter with
a reference pressure of twenty (20) micro-pascals using the "A" weighted network scale as slow response. The unit of
measurement shall be defined as "dBA."
"Commercial property" means a parcel of real property which is developed and used either in part or in whole for
commercial purposes.
"Construction" means any site preparation, assembly, erection, substantial repair, alteration or similar action, but
excluding demolition for or of public or private rights-of-way, structures, utilities or similar property.
"Cumulative period" means an additive period of time composed of individual time segments which may be continuous
or interrupted.
"Decibel (dBA)" means the unit that denotes the ratio between two quantities which are proportional to power; the
number of decibels corresponding to the ratio of two amounts of power is ten times the logarithm to the base ten of this
ratio.
"Dwelling unit" means a single unit providing complete independent living facilities for one or more persons including
permanent provisions for living, sleeping, eating, cooking and sanitation.
"Emergency" means any occurrence or set of circumstances involving actual or imminent injury to person or property
damage which demands immediate action.
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"Emergency machinery, vehicle, work or alarm" means any machinery, vehicle, work or alarm used, employed, performed
or operated in an effort to protect, provide or restore safe conditions in the community or for the citizenry, or work by private
or public utilities when restoring utility service.
"Fixed noise source" means a stationary device which creates sounds while fixed or motionless including, but not limited
to residential, agricultural, industrial and commercial machinery and equipment, pumps, fans, compressors, air conditioners
and refrigeration equipment.
"Grading" means any excavating or filling of earth material or any combination thereof conducted at a site to prepare the
site for construction or other improvements thereon.
"Health care institution" means any hospital, convalescent home or other similar facility which provides health care,
medical treatment, room, board or other services for the ill, retarded or convalescent.
"Impulsive noise" means a noise of short duration usually less than one second of high intensity, with an abrupt onset
and rapid decay.
"Industrial property" means a parcel of real property which is developed and used either in part or in whole for
manufacturing purposes or zoned M-1.
"Intruding noise level" means the total sound level, in decibels, created, caused, maintained or originating from an
alleged offensive source at a specified location while the alleged offensive source is in operation.
"Mobile noise source" means any noise source other than a fixed noise source.
"Noise" means any sound which annoys or disturbs humans or which causes or tends to cause an adverse psychological
or physiological effect on humans.
"Noise disturbance" means any sound or noise which endangers or injures the safety or health of human beings or
animals or which annoys or disturbs reasonable persons of normal sensitivities or which is of such a noise level or volume as
would annoy or disturb reasonable persons of normal sensitivities or which endangers or injures personal or real property,
or which violates the ambient noise standards set forth in this chapter.
"Person" means a person, firm, association, co-partnership, joint venture corporation or any entity, public or private in
nature.
"Residential property" means a parcel of real property which is zoned for residential use according to the RMC, other
than transient uses such as hotels and motels.
"Sound amplification equipment" means any device which produces, reproduces or amplifies sound and has a variable
volume control.
"Sound level meter" means an instrument meeting American National Standard Institute's Standard SL. 4-1971, or most
recent revision thereof for Type 1 or Type 2 sound level meters.
"Sound pressure level" of a sound, in decibels, means twenty (20) times the logarithm to the base ten of the ratio of the
pressure of the sound to a reference pressure, which reference pressure shall be explicitly stated.
(Prior code §§ 4302, 4303, 4323)
8.36.030 - Exemptions.
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A.
1.
2.
3.
4.
5.
6.
7.
B.
The following activities shall be exempted from the provisions of this chapter:
Activities conducted on public playgrounds and public or private school grounds, including but not
limited to, school athletic or school entertainment events or programs sponsored by the Rosemead
Recreation Department;
Any mechanical device, apparatus or equipment used, related to or connected with emergency
machinery, vehicle, work or warning alarm or bell provided the sounding of any bell or alarm on any
building or motor vehicle shall terminate its operation within thirty (30) minutes in any hour of its being
activated;
Noise sources associated by construction, repair, remodeling or grading of any real property or during
authorized seismic surveys, provided such activities do not take place between the hours of eight p.m.
and seven a.m. on weekdays, including Saturday, or at any time on Sunday or a federal holiday, and
provided the noise level created by such activities does not exceed the noise standard of sixty-five (65)
dBA plus the limits specified in Section 8.36.060(B) as measured on residential property and does not
endanger the public health, welfare and safety;
All mechanical devices, apparatus or equipment associated with agricultural operations provided:
Operations do not take place between eight p.m. and seven a.m. on weekdays, including Saturday or at any time
on Sunday or a federal holiday;
Noise sources associated with the maintenance of real property provided such activities take place
between the hours of seven a.m. and eight p.m. on any day except Sunday, or between the hours of nine
a.m. and eight p.m. on Sunday;
Any activity to the extent regulation thereof has been preempted by state or federal law, including but
not limited to: aircraft, motor vehicles, railroads, and other interstate carriers;
The provisions of this chapter shall not preclude the construction, operation, maintenance and repairs of
equipment, apparatus or facilities of park and recreation departments, public work projects, or public
utilities subject to the regulatory jurisdiction of the California Public Utilities Commission.
Grandfather Provisions. Any noise source located in an "M" zone as defined in the Rosemead Zoning
Ordinance, and which noise source is in operation on or prior to the date of adoption of the ordinance
codified in this chapter shall be exempt from the provisions of this chapter, provided however, that such
source shall not increase its noise level beyond that currently existing. Notwithstanding the foregoing, no such
noise source shall emit levels in excess of the standards set forth in Section 8.36.130.
(Prior code §§ 4309, 4310)
8.36.040 - Decibel measurement criteria.
Any decibel measurement made pursuant to the provisions of this chapter shall be based on a reference sound pressure
of twenty (20) micro-pascals as measured with a sound level meter using the "A" weighted network (scale) at slow response.
(Prior code § 4304)
8.36.050 - Designated noise zones.
Receptor properties hereinafter described are assigned to the following noise zones:
Noise Zone I: Single-, double- and multiple-family residential properties.
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A.
1.
2.
a.
b.
c.
d.
e.
3.
Noise Zone II: Commercial properties.
Noise Zone III: Manufacturing or industrial properties.
(Prior code § 4305)
8.36.060 - Noise standards.
Exterior Noise Standards.
The following noise standards, unless otherwise specifically indicated, shall apply to all receptor
properties within a designated noise zone:
Noise Zone Type of Land Use
(Receptor Property)
Time Interval Allowable Exterior Noise
Level
I Single-, double- or
multiple-family
residential
10:00 p.m.—7:00 a.m.
7:00 a.m.—10:00 p.m.
45 dBA
60 dBA
II Commercial 10:00 p.m.—7:00 a.m.
7:00 a.m.—10:00 p.m.
60 dBA
65 dBA
III Industrial or
manufacturing
anytime 70 dBA
A person shall not in any location of the city create any noise, or allow the creation of any noise on
property owned, leased, occupied or otherwise controlled by such person (hereinafter "noise source"),
which causes the noise level when measured on any property (hereinafter "receptor property"), to
exceed:
The applicable noise standard for a cumulative period of time of more than thirty (30) minutes in
any hour; or
The applicable noise standard plus five dBA for a cumulative period of more than fifteen (15)
minutes in any hour; or
The applicable noise standard plus ten dBA for a cumulative period of more than five minutes in
any hour; or
The applicable noise standard plus fifteen (15) dBA for a cumulative period of more than one
minute in any hour; or
The noise standard plus twenty (20) dBA for any period of time.
In the event the ambient noise level exceeds any of the first three noise limit categories above, the
cumulative period applicable to said category shall be increased to reflect ambient noise level. In the
event the ambient noise level exceeds the third noise limit category, the maximum allowable noise level
under said category shall be increased to reflect the maximum ambient noise level.
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4.
5.
B.
1.
2.
a.
b.
c.
3.
4.
5.
If the receptor property is located on a boundary between two different noise zones, the lower noise level st
applicable to the quieter noise zone shall apply.
If the noise source is continuous and cannot reasonably be discontinued or stopped for a time period
whereby the ambient noise level can be determined, the measured noise level obtained while the source
is in operation shall be compared directly to the receptor property's designated land use and for the time
of day the noise level is measured.
Interior Noise Standards.
The following noise standards, unless otherwise specifically indicated, shall apply to all residential
receptor property within all noise zones:
Noise Zone Type of Land Use
(Receptor Property)
Time Interval Allowable Noise Level
ALL Residential anytime 45 dBA
The noise limit specified above shall be reduced by five dBA for noises consisting of speech or music, provided,
however, that if the ambient noise level exceeds the resulting standard the ambient shall be standard.
A person shall not at any location within the city create any noise, or allow the creation of any noise on
property owned, leased, occupied or otherwise controlled by such person which causes the noise level
when measured within any receptor residential dwelling unit in any noise zone to exceed:
The interior noise standard for a cumulative period of more than five minutes in any hour; or
The interior noise standard plus five dBA for a cumulative period of more than one minute in any
hour; or
The interior noise standard plus ten dBA for any period of time.
In the event the ambient noise level exceeds the noise limit categories set forth in subdivisions (2)(a) and
(2)(b) above, the cumulative period applicable to said category shall be increased to reflect said ambient
noise level. In the event the ambient noise level exceeds the third noise limit category, the maximum
allowable noise level under said category shall be increased to reflect the maximum ambient noise level.
If the receptor property is located on a boundary between two different noise zones, the noise level
standard applicable to the quieter noise zone shall apply.
If the intruding noise source is continuous and cannot reasonably be discontinued or stopped for a time
period whereby the ambient noise level can be determined, the same procedures specified in subsection
(A)(5) of this section shall be deemed proper to enforce the provisions of this chapter.
(Prior code §§ 4306, 4307)
8.36.070 - Noise level measurement.
The location selected for measuring exterior noise levels shall be at any point on the receptor property, and at least four
feet above the ground and five feet from the nearest structure or wall. Interior noise measurements shall be made within the
receptor residential unit. The measurements shall be made at a point at least four feet from the wall, ceiling or floor nearest
the noise source with windows in an open or closed position depending on the normal ventilation requirements.
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A.
B.
A.
B.
1.
2.
C.
D.
E.
(Prior code § 4308)
8.36.080 - Noise disturbance prohibited.
A person shall not make, continue or cause to be made or continued, any noise disturbance. Noncommercial
public speaking and public assembly activities conducted on any public space or public right-of-way shall be
exempt from the operation of this subsection.
No person shall create, conduct, maintain or cause a noise disturbance. No person shall host or conduct a
private or public dance, party, gathering or event in a residential neighborhood or in another neighborhood
inhabited for residential use where the sound or noise emanating therefrom constitutes a noise disturbance.
The source of instrumentalities of a noise disturbance may be seized in conjunction with the abatement of a
noise disturbance.
(Prior code §§ 4311, 4324)
8.36.090 - Abatement of noise disturbance.
Any peace officer and any person empowered and authorized to make arrests for violations of provisions of this code is
empowered and authorized to summarily abate a noise disturbance.
(Prior code § 4325)
8.36.100 - Speci c prohibitions.
The following acts, and the causing thereof, are declared to be in violation of this chapter.
Radios, Television Sets, Musical Instruments and Similar Devices. Operating, playing or permitting the
operation or playing of any radio, television, phonograph, drum, musical instrument, sound amplifier, or
similar device which produces, reproduces, or amplifies sound between the hours of ten p.m. and seven
a.m. the following day in such a manner as to create a noise disturbance across a real property boundary
or within a noise sensitive zone.
Loudspeakers/Public Address Systems.
Using or operating for noncommercial purpose any loudspeaker, public address system, or similar
device between the hours of ten p.m. and seven a.m. the following day, such that the sound
therefrom creates a noise disturbance across a residential real property boundary.
Using or operating for any commercial purpose, any loudspeaker, public address system, or similar
device such that the sound therefrom creates a noise disturbance across a real property boundary
or between the hours of ten p.m. and seven a.m. the following day on a public right-of-way or public
space.
Loading and Unloading. Loading, unloading, opening, closing or other handling of boxes, crates,
containers, building materials, garbage cans, or similar objects between the hours of ten p.m. and six
a.m. the following day in such a manner as to cause a noise disturbance across a residential real property
boundary.
Vehicle or Motorboat Repairs and Testing. Repairing, rebuilding, modifying or testing any motor vehicle,
motorcycle, or motorboat in such a manner as to cause a noise disturbance across a residential real
property boundary.
Powered Model Vehicles. Operating or permitting the operation of powered model vehicles so as to
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F.
1.
2.
G.
1.
2.
3.
4.
A.
B.
C.
D.
create a noise disturbance across a residential real property boundary, in a public space between the
hours of ten p.m. and seven a.m. the following day. Maximum sound levels in a public space during the
permitted period of operation shall conform to those set forth for residential land use in Section
8.36.060(A)(1). Maximum sound levels for residential property during the permitted period of operation,
shall be governed by Section 8.36.060(A)(1).
Stationary Non-Emergency Signaling Devices.
Sounding or permitting the sounding of any electronically amplified signal from any stationary bell,
chime, siren, whistle or similar device, intended primarily for non-emergency purposes, from any
place, for more than five minutes in any hourly period.
Devices used in conjunction with places of religious worship shall be exempt from the operation of
this provision.
Refuse Collection Vehicles. A person shall not:
On or after three years following the effective date of the ordinance codified in this chapter, operate
or permit the operation of the compacting mechanism of any motor vehicle which compacts refuse
and which creates, during the compacting cycle, a sound level in excess of eighty-five (85) dBA when
measured at fifty (50) feet from any point on the vehicle;
Operate or permit the operation of the compacting mechanism of any motor vehicle which
compacts refuse, between the hours of ten p.m. and six a.m. the following day in a residential area
or noise sensitive zone or within five hundred (500) feet thereof;
Collect refuse with collection vehicle between the hours of ten p.m. and six a.m. the following day in
a residential area or noise sensitive zone or within five hundred (500) feet thereof.
In the case of a conflict between this chapter and any other ordinance regulating refuse collection,
provisions of any specific ordinance regulating refuse collection shall control.
(Prior code § 4312)
8.36.110 - Variances for time to comply.
Within one hundred twenty (120) days following the effective date of the ordinance codified in this chapter, the
owner of any commercial or industrial source of sound may apply to the Planning Commission for a variance
for time to comply.
Any person seeking a variance for time to comply shall file an application with the Planning Department. The
application shall contain information which demonstrates that bringing the source of sound or activity for
which the variance is sought into compliance with this chapter, prior to the date requested in the application,
would constitute an unreasonable hardship on the applicant, on the community, or other persons.
In determining whether to grant or deny the application, the Planning Commission shall balance the hardship
to the applicant, the community, and other persons by not granting the variance for time to comply against
the adverse impact on property affected, and any other adverse impacts of granting the variance. Applicants
for variances for time to comply and persons contesting variances may be required to submit any information
to the Planning Commission that they may reasonably require. In granting or denying an application, the
Planning Department shall place on public file, a copy of the decision and the reasons for denying or granting
the variance for time to comply.
Variances for time to comply shall contain all necessary conditions, including a schedule for achieving
compliance. The variance for time to comply shall not become effective until all conditions are agreed to by
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E.
F.
G.
1.
2.
a.
b.
3.
A.
B.
C.
the applicant in writing. Noncompliance with any condition of the variance shall terminate the variance and
subject the person holding it to the provisions of this chapter.
Application for extension of time limits specified in variances for time to comply, or for modification of other
substantial conditions, shall be treated as applications for initial variances under subsection B of this section,
except that the Planning Commission must find that the need for the extension or modification clearly
outweighs any adverse impacts of granting the extension or modification.
The Planning Commission may issue guidelines defining the procedures to be followed in applying for a
variance for time to comply and the criteria to be considered in deciding whether to grant a variance.
Findings. No variance shall be granted unless the Planning Commission makes all of the following findings:
That the applicant is or will be in violation of this chapter;
That, due to conditions beyond the reasonable control of the applicant, requiring compliance would
result in either:
An arbitrary or unreasonable taking of property, or
The practical losing and elimination of a lawful business;
That such closing or taking would be without a corresponding benefit in reducing noise levels.
(Prior code § 4313)
8.36.120 - Appeals.
A person dissatisfied with an action taken by the Planning Commission may appeal to the City Council. All appeals shall
be submitted and acted upon in the manner prescribed by Section 17.124.070.
(Prior code § 4314)
8.36.130 - Immediate threats to health and welfare.
The City Manager shall order an immediate halt to any sound which exposes any person, except those
excluded pursuant to Section 8.36.030(A) to continuous sound levels in excess of those shown in Table B.
Within two days following issuance of such an order, the city shall apply to the appropriate court for an
injunction to replace the order.
No order pursuant to this section shall be issued if the only persons exposed to sound levels in excess of
those listed in Tables A and B are exposed as a result of: (1) trespass; (2) invitation upon private property by
the person causing or permitting the sound; or (3) employment by the person or a contractor of the person
causing or permitting the sound.
Any person subject to an order issued pursuant to Section 8.36.030(A)(1), shall comply with such order until:
(1) the sound is brought into compliance with the order as determined by the City Manager; or (2) a judicial
order has superseded the City Manager's order.
Table A
Continuous Sound Levels which Pose an Immediate Threat to Health and Welfare (Measured at 50 feet or 15 meters)*
Sound Level Limit (dBA)Duration
90 24 hours
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93 12 hours
96 6 hours
99 3 hours
102 1.5 hours
105 45 minutes
108 22 minutes
* Use equal energy time-intensity trade-off if level varies; find energy equivalent over 24 hours.
Table B
Impulsive Sound Levels which Pose an Immediate Threat to Health and Welfare (Measured at 50 feet or 15 meters)
Sound Level Limit (dBA)Number of Repetitions per 24-
hour period
145 1
135 10
125 100
(Prior code § 4320)
8.36.140 - Noise abatement—Costs.
When a large party or gathering occurs on a private property and a Deputy Sheriff at the scene determines that such
party or gathering is a noise disturbance as such term is defined in Section 8.36.020 or the party or gathering for any other
reason is a threat to the public peace, health, safety or general welfare, the person in charge of the premises and the person
responsible for the event, or if either of those persons is a minor, then the parents or guardians of that minor, will be held
jointly and severally liable for the cost of providing Sheriff's personnel on special security assignment over and above the
services normally provided by the Sheriff's Department. The Sheriff's personnel utilized during a second response after the
first warning to abate the noise disturbance or otherwise to control the threat to the public peace, health, safety or general
welfare, shall be deemed to be on special security assignment over and above the services normally provided. The costs of
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such special security assignment may include minor damages to city property and/or injuries to city and/or Sheriff's
personnel. Costs assessed shall not be in excess of five hundred dollars ($500.00) for a single incident. The city reserves its
legal options to elect any other legal remedies when said costs or damage exceed five hundred dollars ($500.00).
Upon the first response to such an assemblage, the person in charge of the assemblage and the person or persons in
charge of the premises, and if such person is a minor, then the parents or guardians of that minor, shall be given a first
warning in the form of a written notification stating that the first response as above described shall be deemed to be the
normal Sheriff's services provided. The Sheriff's personnel necessarily utilized after such first warning to control a noise
disturbance or a threat to the public peace, health, safety or general welfare shall be deemed to be on special security
assignment over and above the normal services provided and the owner of the property and/or the person in charge of the
property where such assemblage occurs, and/or the person responsible for such assemblage, shall be personally responsible
for the cost of such special security assignment in an amount determined upon a cost accounting basis by the city and that
the cost of such special security assignment, shall include damage to city property and/or injuries to city and/or Sheriff's
personnel.
(Prior code § 4326)
8.36.150 - Applicability to xed noise sources.
None of the provisions of this chapter shall apply to a fixed sound source during the period commencing the effective
date of the ordinance codified in this chapter and terminating one year thereafter. This section does not apply where the
source of the noise is sound amplification equipment with variable volume control.
(Prior code § 4321)
8.36.160 - Enforcement.
The City Manager or his or her appointed representative is directed to enforce the provisions of this chapter and is
authorized and may arrest at his or her discretion, any person without a warrant when he or she has reasonable cause to
believe that such person has committed a misdemeanor in his presence.
No person shall interfere with, oppose or resist any authorized person charged with the enforcement of this chapter
while such person is engaged in the performance of his or her duty.
(Prior code §§ 4315, 4316)
8.36.170 - Violations—Written notice.
Violations of this chapter shall be prosecuted in the same manner as other misdemeanor violations of the city code,
provided however, that in the event of an initial violation of the provisions of this chapter, a written notice shall be given the
alleged violator which specifies the time by which the condition shall be corrected or an application for permit or variance
shall be received by the Planning Department. No complaint or further action shall be taken in the event the cause of the
violation has been removed, the condition abated or fully corrected within the time period specified in the written notice.
In the event the alleged violator cannot be located in order to serve the notice of intention to prosecute, the notice as
required herein shall be deemed to be given upon mailing such notice by registered or certified mail to the alleged violator at
his or her last known address or at the place where the violation occurred in which event the specified time period for
abating the violation or applying for a variance shall commence at the date of the day following the mailing of such notice.
Subsequent violations of the same offense shall result in the immediate filing of a misdemeanor complaint.
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(Prior code §§ 4317, 4319)
8.36.180 - Violations—Misdemeanors.
Any person violating any of the provisions of this chapter shall be deemed guilty of a misdemeanor and, upon conviction
thereof, shall be punished by a fine of not more than one thousand dollars ($1,000.00) or be imprisoned in the county jail for
a period not exceeding six months or both such fine and imprisonment. Each day such violation is committed or permitted to
continue shall constitute a separate offense and shall be punishable as such. (Amended during 1999 codification; prior code §
4318)
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Chapter 6
NOISE ELEMENT
Introduction
oise has become a key factor in the perception of the
quality of our environment. Noise affects both the
home and work environment and the enjoyment of
recreational activity. For these reasons, noise is an important issue
in the community planning process. The Noise Element of a
general plan is a comprehensive program to limit the exposure of
the community to excessive noise levels. The Element identifies
current and projected noise levels for existing and planned uses
within the City of Rosemead. The projected noise levels are used
to guide future land decisions to limit noise and its effects on the
community, including noise-sensitive land uses. Potential noise
sources are identified and programs established to avoid or mitigate
noise impacts associated with community development. The
information contained in the Noise Element will also provide
baseline levels and noise source identification for local noise
ordinance enforcement.
The State recognizes the relationship between noise and noise
sensitive uses and has adopted guidelines for Noise Elements. This
N
R OSEMEAD G ENERAL P LAN
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OCTOBER 2008
Noise Element satisfies the requirements of State planning law and
is a mandated component of the General Plan. Government Code
Section 65302(f) establishes the required components of the Noise
Element. The Element also complies with California Health and
Safety Code Section 56050.1 guidelines for Noise Elements.
The City of Rosemead strives to reduce the impacts of noise
through a combination of land use planning, site criteria, noise
reduction, and enforcement strategies. The policies and programs
detailed in this Element focus on protecting the quality of life
found within our residential neighborhoods, schools, and other
noise-sensitive uses from the persistent hazards of excessive noise.
Relationship to Other
Elements
The Noise Element requires the consideration of any possible
adverse impacts related to noise in decision-making concerning
future development. For this reason, the goals and policies in the
Noise Element must be considered when implementing policies
outlined in the Land Use Element. The Noise Element is also
linked to the transportation policies in the Circulation Element.
The projected noise contours identified in Figure 6-1 within this
Element directly correspond to the Circulation Plan and the
projected traffic generated from proposed land uses. Both the
Noise and Circulation Elements contain policies and programs to
minimize the effects of transportation noise. The Noise Element
also relates to the Resource Management Element. Excessive noise
can diminish enjoyment peaceful environment and enjoyment of
parks and other designated open space. As a result, noise levels are
considered during the planning of new project including
recreational and open space areas. Additionally, open space areas
can be used to separate and buffer noise sensitive land uses from
noise producers.
City of Rosemead
General Plan Update
June 2008
Exisiting Noise ContoursSource: Urban Crossroads, Inc.
Figure 6-1
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Other Plans
California Environmental Quality Act (CEQA)
Guidelines
The California Environmental Quality Act (CEQA) was adopted by
the State legislature in response to a public mandate for project
environmental analysis that might affect the environment.
Excessive noise is considered an environmental impact under
CEQA. The provisions of the law and environmental review
procedures are described in the CEQA Statutes and the CEQA
Guidelines. Implementation of CEQA ensures that during the
decision making stage of project development, City officials and
the general public will be able to assess the noise impacts among
other environmental impacts associated with public and private
development projects.
California Noise Insulation Standards (Title 24)
The California Commission of Housing and Community
Development officially adopted noise standards in 1974. In 1988,
the Building Standards Commission approved revisions to the
standards (Title 24, Part 2, California Code of Regulations). As
revised, Title 24 establishes interior noise standards for residential
space. Acoustical studies must be prepared for residential
structures that are to be located within noise contours of 60 dB(A)
or greater from freeways, major streets, thoroughfares, rail lines,
rapid transit lines or industrial noise sources. The studies must
demonstrate that the building is designed to reduce interior noise
to 45 dB(A) or lower.
City of Rosemead Noise Control Ordinance
The City has adopted a Noise Control Ordinance (Chapter 8.36)
that sets maximum exterior noise levels for residential, commercial,
and industrial land uses and maximum interior noise levels for
residential uses. It establishes ambient noise level limits that apply
according to the land use zone and time of day. The ordinance
provides controls for excessive and annoying noise from stationary
sources such as industrial plants, pumps, compressors, and
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OCTOBER 2008
refrigeration units. Certain noise sources are prohibited and the
ordinance establishes an enforcement process.
Measuring Noise
Noise generally is defined as unwanted or intrusive sound. Since
noise consists of pitch, loudness, and duration, describing noise
with a single unit of measure presents a challenge. The A-weighted
decibel scale (dB[A]) has been developed to describe the loudness
of a sound or sound environment based on the sensitivity of the
human ear.
The dB(A) descriptor only reports noise from a single source or
combination of sources at a point in time. To allow a more
comprehensive description of the noise environment, federal and
State agencies have established noise and land use compatibility
guidelines that use averaging approaches to noise measurement.
Two measurement scales commonly used in California are the
Community Noise Equivalent Level (CNEL) and the day-night
level (Ldn). To account for increased human sensitivity at night,
the CNEL level includes a 5-decibel penalty on noise during the
7:00 a.m. to 10:00 p.m. time period and a 10-decibel penalty on
noise during the 10:00 p.m. to 7:00 a.m. time period. The Ldn level
includes only the 10-decibel weighting for late-night noise. These
values are nearly identical for all but unusual noise sources.
Baseline Noise
Environment
To establish a baseline against which to measure changes in the
community noise environment over time, a noise modeling effort
was conducted, with 2007 serving as the baseline year. Since traffic
noise represents the dominant noise source in Rosemead, the
model focuses on the 24-hour ambient noise conditions resulting
from roadway travel. Figure 6-1 shows noise exposure contours for
baseline year 2007.
Transportation-Related Noise
Freeway and major arterial roadways represent the major sources of
traffic noise as shown in Figure 6-1. Although noise levels are lower
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OCTOBER 2008
for secondary highways, they are also a significant source of traffic
noise. Almost all commercial areas in the City are affected by
traffic noise since they are located adjacent to the main
thoroughfares or freeways. Given the impact of traffic noise within
the planning area and due to the predominance of residential uses
in the City, many residential areas are also affected by noise. As
indicated in Figure 6-2, the majority of the City’s residential areas
are located within the >60 and >70 db(A) CNEL noise contours.
This map outlines non-noise sensitive areas, revealing residential
uses for the remainder of the City, and also indicates the locations
of schools and parks. All of the schools in the City are located
within the >60- and >70 db(A) CNEL noise contours. Six of the
seven City parks are located within the >55 and >65 db(A) CNEL
noise contours.
The City has little direct control over noise produced by
transportation sources because State noise regulations for motor
vehicles and rail preempt local regulations. As the City cannot
control noise at the source, City noise programs focus on reducing
the impacts of transportation noise on the community.
Non-Transportation Noise and Land Use
Planning
Excessive noise can be considered an environmental pollutant that
can damage hearing and affect general well-being. Noise becomes a
concern when it consistently interferes with a person’s ability to
conduct everyday work and recreation activities. Noise sources can
include commercial and industrial activities, car alarms, loud
music, noise generated from large gathering and typical residential
neighborhood sounds such as lawnmowers, children at play, and
barking dogs. In Rosemead, the noise impacts from these sources
are outweighed by traffic-related noise.
Regardless of the type of noise, levels are highest near the source
and decrease with distance. Noise becomes a problem when
sources and noise sensitive land uses are located in adjacent areas.
Residential uses are generally the most sensitive to noise. Other
noise-sensitive land uses include schools, libraries, offices, hospitals,
churches, hotels, motels, and outdoor recreational areas. Mixed-
use projects often present unique problems in this area, such as
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City of Rosemead
General Plan Update
June 2008
Exisiting Noise Contours
and Noise Sensitive UsesSource: Urban Crossroads, Inc.
Figure 6-2
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PAGE6-11
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when restaurants with nighttime entertainment are located below
residential units. Most noise impacts can be avoided when noise
sources, sensitive land uses, and information about the future noise
environment are considered in planning and development
decisions.
The City’s primary goal with regard to community noise is to
minimize the exposure of residential neighborhoods, schools, and
similar land uses to excessive or unhealthy noise levels to the extent
possible given built-out conditions. Toward this end, the Noise
Element establishes noise/land use compatibility guidelines based
upon cumulative criteria for outdoor noise. Figure 6-3 outlines the
criteria the City will use when reviewing development proposals.
New residential development will comply with Title 24 standards.
In addition, strict enforcement of the City Noise Ordinance can
improve noise conditions within Rosemead.
Year 2025 Noise
Environment (Build-out
Year)
The Land Use Element indicates that Rosemead will accommodate
residential and commercial growth through the year 2025. The
major noise sources in Rosemead will continue to be transportation
related: freeways, major arterial roadways, and trains. To a lesser
degree, industrial sources can be significant noise sources. These
sources, as well as individual stationary and industrial noise
generators, must be considered in the planning process to ensure
long-term noise compatibility.
Regional growth will contribute to increased traffic volumes
citywide and along major roadways, and could lead to elevated
traffic noise levels and noise impacts associated with the Union
Pacific Railway and major regional rail transportation projects such
as the Alameda Corridor East (ACE). Union Pacific operates two
railroad lines within the City, one running through the northern
boundary of the City and the other parallel to the I-10 Freeway.
The ACE runs freight trains on one track parallel to the northern
boundary of the City. The City’s land use policies do not
encourage development of heavy industrial uses that produce noise,
and the City plans to work with the Alameda Corridor East Joint
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Figure 6-3
Noise/Land Use Compatibility Matrix
Community Noise Exposure (Ldn or CNEL) Land Use 55 60 65 70 75 80
Residential
Transient Lodging – Motel,
Hotel
Schools, Libraries, Churches,
Hospitals, Nursing Homes Auditoriums, Concert Halls,
Amphitheaters1
Sports Arena, Outdoor Spectator
Sports1
Playgrounds, Parks
Golf Course, Riding Stables,
Water Recreation, Cemeteries
Office Buildings, Business
Commercial, and Professional Industrial, Manufacturing,
Utilities, Agriculture
Source: Modified by Cotton/Bridges/Associates from 1998 State of California General Plan Guidelines.
Normally Acceptable: Specified land use is satisfactory, based upon the assumption that any
buildings involved meet conventional Title 24 construction standards. No special noise
insulation requirements.
Conditionally Acceptable: New construction or development shall be undertaken only after a
detailed noise analysis is made and noise reduction measures are identified and included in the
project design.
Normally Unacceptable: New construction or development is discouraged. If new construction
is proposed, a detailed analysis is required, noise reduction measures must be identified, and
noise insulation features included in the design.
Clearly Unacceptable: New construction or development clearly should not be undertaken.
1. No normally acceptable condition is defined for these uses. Noise studies are required prior to
approval of such projects.
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OCTOBER 2008
Powers Authority, when feasible, to ensure that noise impacts
associated with increased traffic along the Alameda Corridor East
(ACE) do not adversely impact Rosemead.
Potential future ambient noise levels can be estimated by
modeling. Figure 6-4 displays projected year 2025 noise contours
based upon future traffic levels and railroad operations. The City
will experience very little change in ambient noise levels due to
traffic. For planning purposes, the change will be imperceptible.
Issues, Goals, and Policies
Three issues are addressed by the goals, policies and
implementation actions of the Noise Element: (1) avoiding the
negative impacts of noise through land use planning and noise
reduction measures; (2) minimizing the impact of transportation
related noise; and (3) minimizing the impact of non-transportation
related noise.
Goal 1: Effective incorporation of noise considerations
into land use planning decisions.
Policy 1.1: Ensure compliance with standards for interior and
exterior noise established within the Noise Element
and Zoning Code.
Policy 1.2: Require new multiple-family residential
development to comply with State regulations if
they are to be located in areas where ambient noise
levels exceed 60 dB.
Policy 1.3: Periodically review and update the Existing Noise
Contours Map to ensure that any future noise
increases not considered in the Noise Element will
be identified.
Policy 1.4: Encourage acoustical design in new construction.
Policy 1.5: Require sound walls to be constructed in
designated mixed-use districts where noise-sensitive
land uses are located on adjacent properties.
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City of Rosemead
General Plan Update
February 2010
2025 Noise ContoursSource: Urban Crossroads, 2010.
Figure 6-4
NOT TO SCALE
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Policy 1.6: Require parking and loading facilities in mixed use
districts to be located and designed to minimize the
potential noise impacts to adjacent noise sensitive
uses.
Policy 1.7: Provide an acceptable noise environment for
existing and future Rosemead residents.
Goal 2: Reduced noise impacts from transportation
sources.
Policy 2.1: Require consideration of noise impacts and
mitigation in the design of new roadway projects
and improvements to major or secondary arterials.
Policy 2.2: Reduce transportation noise by prohibiting through
truck traffic on local streets in residential areas.
Policy 2.3: Continue to support the efforts of the Los Angeles
County Sheriff to enforce vehicle codes as they
relate to noise generation.
Policy 2.4: Consider alternatives to further reduce impacts on
noise sensitive land uses generated from rail traffic
associated with operation of the Alameda Corridor
East project.
Policy 2.5: Consider “Quiet Zone” rail crossing elements to
meet Rail Authority Criteria.
Policy 2.6: Coordinate with other agencies such as MTA
before approval of proposed projects where
applicable to mitigate noise impacts.
Goal 3: Effective implementation of measures to control
non-transportation noise impacts.
Policy 3.1: Enforce provisions of the Community Noise
Ordinance to mitigate noise conflicts.
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OCTOBER 2008
Policy 3.2: Require that potential sources of noise be
considered when approving new development to
reduce the possibility of adverse affects.
Policy 3.3: Evaluate noise generated by construction activities
to ensure compliance with the Community Noise
Ordinance.
Policy 3.4: Establish and maintain coordination among the
City departments involved in noise abatement.
Implementation Actions
Goal 1: Effective incorporation of noise avoidance
considerations into land use planning decisions.
Action 1.1 Enforce the City Noise Ordinance, which specifies
acceptable limits of noise for various land uses
located throughout the City.
Action 1.2 Incorporate noise reduction features during site
planning to mitigate anticipated noise impacts on
affected noise sensitive land uses. The noise
contours, illustrated on the Existing Noise
Contours Map, identify areas within the City
exposed to noise levels greater than 60dB CNEL
and shall be used to identify locations of potential
conflict. Require acoustical analyses, as
appropriate, for proposed residential development
within the 60 dB CNEL or higher contour. New
developments will be permitted only if appropriate
mitigation measures are included.
Action 1.3 Enforce provisions of the California Noise
Insulation Standards (Title 24) that specify that
indoor noise levels for multi-family residential
living spaces shall not exceed 45 dB CNEL. The
standard is defined as the combined effect of all
noise sources, and is implemented when existing or
future exterior noise levels exceed 60 dB CNEL.
Title 24 further requires that the standard be
applied to all new hotels, motels, apartment houses,
and dwellings other than detached single-family
dwellings. The City will additionally apply the
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OCTOBER 2008
standard to single-family dwellings and
condominium conversion projects.
Action 1.4 As a condition of development approval, new
commercial and industrial projects located adjacent
to residential areas shall demonstrate reduction of
potential noise impacts on neighboring residential
development to acceptable levels.
Goal 2: Reduced noise impacts from transportation noise
sources.
Action 2.1 Enforce State Motor Vehicle noise standards for
cars, trucks, and motorcycles through coordination
with the California Highway Patrol and the County
of Los Angeles Sheriff’s Department.
Action 2.2 Encourage industrial and commercial activities to
restrict their receiving operations to daytime
periods.
Action 2.3 Require new commercial/industrial/mixed use
development proposals to designate delivery and
loading/unloading areas away from residential uses.
Action 2.4 Work with other jurisdictions and agencies to
monitor and decrease noise levels.
Goal 3: Effective implementation of measures to control
non-transportation noise impacts.
Action 3.1 Enforce the comprehensive community noise
ordinance to ensure that City residents are not
exposed to excessive noise levels from stationary
noise sources including but not limited to
gatherings, entertainment devices, loudspeakers,
loading and unloading, powered model vehicles,
and vehicle repairs and alarms.
Action 3.2 All new residential projects to be constructed near
existing stationary sources of noise (including but
not limited to industrial activities, commercial
facilities, and public parks with sports activities)
must achieve a minimum of 20 dBA of building
NOISE
PAGE 6-20
OCTOBER 2008
noise reduction. Establish a threshold on the
number of residential units permitted near existing
stationary sources of noise.
Action 3.3 Reduce construction-related noise using control
measures at all construction sites, including but not
limited to the use of mufflers on construction
equipment or the physical separation or machinery
from adjacent residential uses.
Action 3.4 The Planning Division shall act as the City noise
control coordinating agency and will ensure the
continued operation of City noise enforcement
efforts.
Appendix B
HVAC Specification Sheet
6
HVAC Systems | Heating & Cooling Systems | Heating & Air https://www.lennox.com/products/specifications/ml14xc1?print=1
1 of 2 2/28/2020, 9:27 AM
HVAC Systems | Heating & Cooling Systems | Heating & Air https://www.lennox.com/products/specifications/ml14xc1?print=1
2 of 2 2/28/2020, 9:27 AM
Appendix C
Noise Measurement DataA
PROJECT: Willard and Garvey Residential Project JOB #: 1445‐2019‐02NOISE METER Piccolo II SLM, 24‐Hour Measurement DATE: 04‐Mar‐20LOCATION: PROPERTY LINE TO THE NORTH BY: D. ShivaiahTime Leq Lmin Lmax L2 L8 L25 L5012:00 AM 45.6 39.6 60.6 49.6 47.5 45.9 44.61:00 AM 38.1 33.4 52.9 46.6 40.4 37.2 35.62:00 AM 45.0 34.7 57.7 49.8 48.6 47.3 443:00 AM 51.5 45.8 67.1 55.7 53.8 52.1 50.54:00 AM 50.8 45.9 67.2 53.8 52.3 51.3 50.15:00 AM 49.4 45.6 63.2 53.4 51.1 49.5 48.66:00 AM 50.4 45.2 62 56.9 54.2 50.4 48.27:00 AM 52.2 46 69.6 58.5 55.3 52.2 50.18:00 AM 51.9 43.5 66 58.6 55.5 52.8 49.89:00 AM 51.2 40.2 73.8 57.5 52.3 47.2 44.910:00 AM 52.1 38.5 76 60 52 46.9 43.511:00 AM 48.7 39.1 64.9 56.3 52.8 48 44.912:00 PM 49.6 39.4 77.5 54.8 51.2 46.7 44.41:00 PM 47.6 39.5 63.9 55.2 50.7 47.1 45.32:00 PM 50.3 40.3 70.7 56.9 52.2 49 46.93:00 PM 50.7 44.1 68.2 57.3 53.8 50.7 48.64:00 PM 51.7 43.5 74.5 59 53.8 49.5 47.75:00 PM 49.3 41.6 66.4 56.6 52.9 49.3 46.76:00 PM 47.9 39.2 69.5 55.9 51.5 45.9 43.67:00 PM 47.3 39.1 67.8 55.7 49.1 44.1 42.48:00 PM 45.5 39.1 63.4 54.6 47.5 43.5 42.39:00 PM 47.4 40.3 67.7 56.9 49.7 44.2 42.810:00 PM 45.7 40.6 63.9 53.2 47.1 44.9 43.911:00 PM 44.7 41.1 58.7 50.3 45.8 44.4 43.6Daytime 49.8 38.5 77.5 57.0 52.3 48.5 46.2Nighttime 48.5 33.4 67.2 53.2 50.9 48.9 47.3
0.020.040.060.080.0100.012:00 AM1:00 AM2:00 AM3:00 AM4:00 AM5:00 AM6:00 AM7:00 AM8:00 AM9:00 AM10:00 AM11:00 AM12:00 PM1:00 PM2:00 PM3:00 PM4:00 PM5:00 PM6:00 PM7:00 PM8:00 PM9:00 PM10:00 PM11:00 PMDecibel (dB)Time24 Hour Noise Monitoring Results (Leq, Ln)LeqLminLmaxL2L8L25L50
0.010.020.030.040.050.060.070.012:00 AM1:00 AM2:00 AM3:00 AM4:00 AM5:00 AM6:00 AM7:00 AM8:00 AM9:00 AM10:00 AM11:00 AM12:00 PM1:00 PM2:00 PM3:00 PM4:00 PM5:00 PM6:00 PM7:00 PM8:00 PM9:00 PM10:00 PM11:00 PMNoise Level (dBA)24‐Hour Noise Monitoring Result (CNEL)LeqCNEL
PROJECT: Willard and Garvey Residential Project JOB #: 1445‐2019‐02NOISE METER Piccolo II SLM, 24‐Hour Measurement DATE: 04‐Mar‐20LOCATION: PROPERTY LINE TO THE SOUTH BY: D. ShivaiahTime Leq Lmin Lmax L2 L8 L25 L5012:00 AM 49.6 63.4 40.8 55.2 52.5 50.4 48.51:00 AM 44.4 63.7 34.4 52.8 48.4 43.4 39.12:00 AM 50.4 65.5 36.9 55.3 53.8 52.4 49.53:00 AM 55.1 59.9 49.1 58 57.2 56.2 54.74:00 AM 55.0 61.1 50.7 57.4 56.7 56 54.85:00 AM 54.2 62.6 51.1 57.1 55.8 54.7 53.96:00 AM 52.6 61.5 49.9 55.3 54 52.9 52.27:00 AM 51.4 71.1 48.2 55.2 53 51.4 50.68:00 AM 51.0 73.6 47 56.5 52.4 50.6 49.49:00 AM 47.3 67.2 42.6 50.5 48.8 47.9 47.110:00 AM 52.0 76.3 40.8 58 49.1 45.8 44.511:00 AM 48.2 67.2 40.9 55.5 50.4 46.3 44.112:00 PM 45.0 61.7 40.3 51.1 46 44.2 43.21:00 PM 45.5 63.2 40.2 52.6 47.4 44.4 42.82:00 PM 50.4 76.3 40.6 52.9 48.7 45.3 43.83:00 PM 50.5 63.9 44.5 56 53.4 50.9 49.24:00 PM 50.1 68 43.6 57.3 53 49.6 485:00 PM 46.3 68.6 41.4 51.3 48.4 46.4 456:00 PM 49.8 66.8 39.4 57.3 55.2 48.8 45.37:00 PM 49.4 70.2 39.4 56 51 46.8 44.28:00 PM 44.6 61.6 39.4 50.8 46.7 44.3 439:00 PM 48.0 64.4 40.9 58.3 50.3 45.6 43.910:00 PM 46.8 62.6 41.7 53.4 47.9 45.9 4511:00 PM 46.7 63.4 41.6 53.2 49.2 46.4 45Daytime 49.1 61.6 48.2 55.3 50.9 47.8 46.3Nighttime 52.3 59.9 51.1 55.9 54.4 53.2 51.8
0.020.040.060.080.0100.012:00 AM1:00 AM2:00 AM3:00 AM4:00 AM5:00 AM6:00 AM7:00 AM8:00 AM9:00 AM10:00 AM11:00 AM12:00 PM1:00 PM2:00 PM3:00 PM4:00 PM5:00 PM6:00 PM7:00 PM8:00 PM9:00 PM10:00 PM11:00 PMDecibel (dB)Time24 Hour Noise Monitoring Results (Leq, Ln)LeqLminLmaxL2L8L25L50
0.010.020.030.040.050.060.070.012:00 AM1:00 AM2:00 AM3:00 AM4:00 AM5:00 AM6:00 AM7:00 AM8:00 AM9:00 AM10:00 AM11:00 AM12:00 PM1:00 PM2:00 PM3:00 PM4:00 PM5:00 PM6:00 PM7:00 PM8:00 PM9:00 PM10:00 PM11:00 PMNoise Level (dBA)24‐Hour Noise Monitoring Result (CNEL)LeqCNEL
Appendix D
SoundPLAN Worksheets
Frequency spectrum [dB(A)]Corrections
Source name Reference Level 125 250 500 1 2 4 8 Cwall CI CT
dB(A)Hz Hz Hz kHz kHz kHz kHz dB(A)dB(A)dB(A)
HVAC-1 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-2 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-3 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-4 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-5 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-6 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-7 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-8 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-9 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-10 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-11 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-12 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-13 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-14 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-15 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-16 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-17 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-18 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-19 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-20 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-21 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-22 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-23 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-24 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-25 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-26 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-27 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-28 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-29 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-30 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
HVAC-31 Lw/unit Day 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Night 76.0 51.5 57.5 66.9 70.6 70.8 70.1 59.0 ---
Willard and Garvey Residential Development Noise Impact
Noise emissions of industry sources
RK Engineering Group Inc.
Limit Level w/o NP Level w NP Difference Conflict
No.Receiver name Building Floor Day Night Day Night Day Night Day Night Day Night
side dB(A)dB(A)dB(A)dB dB
1 Receiver to the East-1 -GF -- 51.4 51.4 51.6 51.6 0.2 0.2 --
2 Receiver to the East-2 -GF -- 51.2 51.2 51.3 51.3 0.1 0.1 --
3 Receiver to the North-1 -GF -- 48.6 48.6 43.2 43.2 -5.5 -5.5 --
4 Receiver to the North-2 -GF -- 43.4 43.4 38.0 38.0 -5.5 -5.5 --
5 Receiver to the South-1 -GF -- 61.2 61.2 52.4 52.4 -8.8 -8.8 --
6 Receiver to the South-2 -GF -- 45.4 45.4 42.4 42.4 -3.0 -3.0 --
7 Receiver to the West-1 -GF -- 52.2 52.2 44.4 44.4 -7.8 -7.8 --
Willard and Garvey Residential Development Noise Impact
Receiver list
RK Engineering Group Inc.
Level w/o NP Level w NP
Source name Day Night Day Night
dB(A)dB(A)
Receiver to the East‐1 GF 51.4 51.4 51.6 51.6
HVAC-1 7.8 7.8 7.8 7.8
HVAC-2 9.8 9.8 9.8 9.8
HVAC-3 12.4 12.4 12.4 12.4
HVAC-4 29.9 29.9 29.9 29.9
HVAC-5 10.4 10.4 10.2 10.2
HVAC-6 11.0 11.0 10.2 10.2
HVAC-7 17.4 17.4 14.5 14.5
HVAC-8 18.3 18.3 14.8 14.8
HVAC-9 14.5 14.5 14.0 14.0
HVAC-10 13.7 13.7 13.4 13.4
HVAC-11 12.0 12.0 12.0 12.0
HVAC-12 27.1 27.1 21.6 21.6
HVAC-13 14.3 14.3 14.3 14.3
HVAC-14 43.6 43.6 43.6 43.6
HVAC-15 43.6 43.6 43.7 43.7
HVAC-16 43.7 43.7 43.7 43.7
HVAC-17 43.6 43.6 43.6 43.6
HVAC-18 40.6 40.6 41.3 41.3
HVAC-19 40.3 40.3 41.1 41.1
HVAC-20 40.1 40.1 41.0 41.0
HVAC-21 39.7 39.7 40.6 40.6
HVAC-22 24.4 24.4 16.2 16.2
HVAC-23 24.3 24.3 16.0 16.0
HVAC-24 24.1 24.1 15.6 15.6
HVAC-25 9.8 9.8 9.8 9.8
HVAC-26 7.7 7.7 7.7 7.7
HVAC-27 7.6 7.6 7.6 7.6
HVAC-28 10.2 10.2 10.2 10.2
HVAC-29 10.4 10.4 10.4 10.4
HVAC-30 28.4 28.4 28.4 28.4
HVAC-31 28.1 28.1 28.1 28.1
Receiver to the East‐2 GF 51.2 51.2 51.3 51.3
HVAC-1 5.0 5.0 5.0 5.0
HVAC-2 12.6 12.6 12.6 12.6
HVAC-3 7.8 7.8 7.8 7.8
HVAC-4 26.7 26.7 26.7 26.7
HVAC-5 26.7 26.7 26.7 26.7
HVAC-6 9.7 9.7 9.5 9.5
HVAC-7 13.5 13.5 12.4 12.4
HVAC-8 13.1 13.1 11.8 11.8
HVAC-9 11.6 11.6 11.6 11.6
HVAC-10 11.7 11.7 11.7 11.7
HVAC-11 10.1 10.1 10.1 10.1
HVAC-12 12.2 12.2 12.2 12.2
HVAC-13 11.6 11.6 11.6 11.6
HVAC-14 39.8 39.8 40.5 40.5
HVAC-15 39.5 39.5 40.3 40.3
HVAC-16 39.3 39.3 40.2 40.2
HVAC-17 39.1 39.1 40.1 40.1
HVAC-18 43.2 43.2 43.2 43.2
HVAC-19 43.3 43.3 43.3 43.3
HVAC-20 43.4 43.4 43.4 43.4
HVAC-21 43.4 43.4 43.4 43.4
HVAC-22 19.7 19.7 29.4 29.4
HVAC-23 32.2 32.2 29.7 29.7
HVAC-24 31.8 31.8 29.3 29.3
HVAC-25 31.5 31.5 29.0 29.0
HVAC-26 32.2 32.2 28.2 28.2
HVAC-27 31.9 31.9 27.9 27.9
HVAC-28 30.3 30.3 25.0 25.0
HVAC-29 31.7 31.7 25.5 25.5
HVAC-30 19.1 19.1 19.1 19.1
Willard and Garvey Residential Development Noise Impact
Contribution levels of the receivers
RK Engineering Group Inc.
Level w/o NP Level w NP
Source name Day Night Day Night
dB(A)dB(A)
HVAC-31 21.3 21.3 21.3 21.3
Receiver to the North‐1 GF 48.6 48.6 43.2 43.2
HVAC-1 8.9 8.9 7.3 7.3
HVAC-2 15.3 15.3 13.4 13.4
HVAC-3 15.1 15.1 13.5 13.5
HVAC-4 19.5 19.5 17.3 17.3
HVAC-5 19.3 19.3 17.6 17.6
HVAC-6 48.4 48.4 41.6 41.6
HVAC-7 31.8 31.8 36.0 36.0
HVAC-8 27.6 27.6 32.6 32.6
HVAC-9 23.3 23.3 17.2 17.2
HVAC-10 22.6 22.6 16.8 16.8
HVAC-11 16.8 16.8 14.9 14.9
HVAC-12 17.0 17.0 15.0 15.0
HVAC-13 16.9 16.9 14.7 14.7
HVAC-14 11.2 11.2 10.5 10.5
HVAC-15 11.5 11.5 10.6 10.6
HVAC-16 11.9 11.9 10.7 10.7
HVAC-17 11.4 11.4 9.2 9.2
HVAC-18 9.4 9.4 9.3 9.3
HVAC-19 9.3 9.3 9.2 9.2
HVAC-20 9.2 9.2 9.1 9.1
HVAC-21 9.1 9.1 9.0 9.0
HVAC-22 8.8 8.8 8.7 8.7
HVAC-23 8.9 8.9 8.8 8.8
HVAC-24 9.0 9.0 8.9 8.9
HVAC-25 9.0 9.0 8.9 8.9
HVAC-26 6.4 6.4 6.0 6.0
HVAC-27 6.4 6.4 6.0 6.0
HVAC-28 6.7 6.7 6.1 6.1
HVAC-29 6.8 6.8 6.1 6.1
HVAC-30 19.3 19.3 13.7 13.7
HVAC-31 18.2 18.2 12.8 12.8
Receiver to the North‐2 GF 43.4 43.4 38.0 38.0
HVAC-1 5.4 5.4 4.3 4.3
HVAC-2 13.9 13.9 13.8 13.8
HVAC-3 14.0 14.0 12.1 12.1
HVAC-4 14.4 14.4 13.7 13.7
HVAC-5 14.8 14.8 14.5 14.5
HVAC-6 16.2 16.2 15.2 15.2
HVAC-7 37.5 37.5 31.8 31.8
HVAC-8 39.5 39.5 32.1 32.1
HVAC-9 17.3 17.3 16.8 16.8
HVAC-10 17.0 17.0 16.3 16.3
HVAC-11 20.1 20.1 19.8 19.8
HVAC-12 20.4 20.4 20.0 20.0
HVAC-13 20.6 20.6 20.1 20.1
HVAC-14 26.5 26.5 24.8 24.8
HVAC-15 26.6 26.6 25.0 25.0
HVAC-16 27.6 27.6 25.6 25.6
HVAC-17 28.9 28.9 26.1 26.1
HVAC-18 27.5 27.5 22.8 22.8
HVAC-19 27.5 27.5 22.6 22.6
HVAC-20 27.4 27.4 22.4 22.4
HVAC-21 27.4 27.4 22.3 22.3
HVAC-22 22.9 22.9 15.9 15.9
HVAC-23 22.8 22.8 15.8 15.8
HVAC-24 22.7 22.7 15.7 15.7
HVAC-25 22.6 22.6 15.5 15.5
HVAC-26 14.6 14.6 15.1 15.1
HVAC-27 13.3 13.3 13.9 13.9
HVAC-28 11.1 11.1 12.0 12.0
HVAC-29 10.9 10.9 11.8 11.8
Willard and Garvey Residential Development Noise Impact
Contribution levels of the receivers
RK Engineering Group Inc.
Level w/o NP Level w NP
Source name Day Night Day Night
dB(A)dB(A)
HVAC-30 31.9 31.9 22.7 22.7
HVAC-31 23.1 23.1 19.4 19.4
Receiver to the South‐1 GF 61.2 61.2 52.4 52.4
HVAC-1 12.0 12.0 6.8 6.8
HVAC-2 8.8 8.8 7.1 7.1
HVAC-3 8.4 8.4 7.1 7.1
HVAC-4 7.1 7.1 6.8 6.8
HVAC-5 10.8 10.8 9.6 9.6
HVAC-6 6.1 6.1 5.7 5.7
HVAC-7 8.8 8.8 10.3 10.3
HVAC-8 9.0 9.0 8.7 8.7
HVAC-9 12.9 12.9 12.6 12.6
HVAC-10 12.1 12.1 11.8 11.8
HVAC-11 17.4 17.4 17.3 17.3
HVAC-12 17.2 17.2 17.1 17.1
HVAC-13 17.0 17.0 16.9 16.9
HVAC-14 11.7 11.7 11.5 11.5
HVAC-15 11.5 11.5 11.3 11.3
HVAC-16 11.5 11.5 11.3 11.3
HVAC-17 11.3 11.3 11.1 11.1
HVAC-18 13.2 13.2 11.9 11.9
HVAC-19 13.7 13.7 12.0 12.0
HVAC-20 14.6 14.6 12.6 12.6
HVAC-21 15.5 15.5 12.8 12.8
HVAC-22 50.7 50.7 42.5 42.5
HVAC-23 51.8 51.8 43.3 43.3
HVAC-24 53.2 53.2 44.2 44.2
HVAC-25 54.6 54.6 45.1 45.1
HVAC-26 53.5 53.5 44.2 44.2
HVAC-27 51.9 51.9 43.3 43.3
HVAC-28 49.7 49.7 41.8 41.8
HVAC-29 48.7 48.7 41.2 41.2
HVAC-30 14.5 14.5 13.2 13.2
HVAC-31 15.6 15.6 14.5 14.5
Receiver to the South‐2 GF 45.4 45.4 42.4 42.4
HVAC-1 15.3 15.3 15.0 15.0
HVAC-2 15.7 15.7 15.2 15.2
HVAC-3 21.5 21.5 17.6 17.6
HVAC-4 16.3 16.3 15.4 15.4
HVAC-5 33.7 33.7 27.2 27.2
HVAC-6 12.6 12.6 7.6 7.6
HVAC-7 29.4 29.4 16.8 16.8
HVAC-8 29.6 29.6 16.9 16.9
HVAC-9 37.1 37.1 30.7 30.7
HVAC-10 37.4 37.4 30.9 30.9
HVAC-11 36.7 36.7 30.7 30.7
HVAC-12 37.4 37.4 31.3 31.3
HVAC-13 35.0 35.0 29.0 29.0
HVAC-14 12.6 12.6 11.8 11.8
HVAC-15 12.4 12.4 12.3 12.3
HVAC-16 12.3 12.3 12.2 12.2
HVAC-17 11.7 11.7 11.6 11.6
HVAC-18 11.9 11.9 11.6 11.6
HVAC-19 11.9 11.9 11.6 11.6
HVAC-20 11.9 11.9 11.5 11.5
HVAC-21 12.0 12.0 11.5 11.5
HVAC-22 18.6 18.6 16.2 16.2
HVAC-23 19.1 19.1 16.6 16.6
HVAC-24 19.6 19.6 17.1 17.1
HVAC-25 20.4 20.4 18.1 18.1
HVAC-26 23.4 23.4 28.7 28.7
HVAC-27 24.4 24.4 29.3 29.3
HVAC-28 26.5 26.5 35.7 35.7
Willard and Garvey Residential Development Noise Impact
Contribution levels of the receivers
RK Engineering Group Inc.
Level w/o NP Level w NP
Source name Day Night Day Night
dB(A)dB(A)
HVAC-29 27.8 27.8 36.6 36.6
HVAC-30 24.3 24.3 18.6 18.6
HVAC-31 36.1 36.1 26.5 26.5
Receiver to the West‐1 GF 52.2 52.2 44.4 44.4
HVAC-1 22.2 22.2 14.3 14.3
HVAC-2 48.2 48.2 40.5 40.5
HVAC-3 34.2 34.2 22.2 22.2
HVAC-4 36.0 36.0 23.2 23.2
HVAC-5 49.1 49.1 41.2 41.2
HVAC-6 23.6 23.6 17.6 17.6
HVAC-7 12.2 12.2 10.0 10.0
HVAC-8 12.6 12.6 11.0 11.0
HVAC-9 37.6 37.6 31.1 31.1
HVAC-10 37.9 37.9 31.1 31.1
HVAC-11 18.3 18.3 15.1 15.1
HVAC-12 15.4 15.4 15.0 15.0
HVAC-13 14.8 14.8 14.4 14.4
HVAC-14 9.8 9.8 9.4 9.4
HVAC-15 9.8 9.8 9.4 9.4
HVAC-16 9.0 9.0 8.3 8.3
HVAC-17 10.2 10.2 9.4 9.4
HVAC-18 6.0 6.0 4.9 4.9
HVAC-19 5.8 5.8 4.8 4.8
HVAC-20 5.6 5.6 4.8 4.8
HVAC-21 5.7 5.7 4.9 4.9
HVAC-22 5.8 5.8 5.3 5.3
HVAC-23 6.0 6.0 5.5 5.5
HVAC-24 6.4 6.4 5.9 5.9
HVAC-25 6.6 6.6 6.1 6.1
HVAC-26 7.5 7.5 6.9 6.9
HVAC-27 7.8 7.8 7.1 7.1
HVAC-28 8.4 8.4 7.5 7.5
HVAC-29 8.7 8.7 7.7 7.7
HVAC-30 18.6 18.6 17.4 17.4
HVAC-31 18.2 18.2 17.0 17.0
Willard and Garvey Residential Development Noise Impact
Contribution levels of the receivers
RK Engineering Group Inc.