HomeMy WebLinkAbout2026-02-13 2nd Review - Noise Impact Study
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA
Prepared for:
Mr. Jay Pesci
Pyramid Advisors Limited Partnership (dba Pyramid Hotel Group)
30 Rowes Wharf, Ste 5300
Boston, MA 02110
C/O: Ms. Nicole Vann
MSA Consulting, Inc.
Prepared by:
MD Acoustics, LLC
Naomi Jensen, INCE-USA
Sarah Ostergaard, INCE-USA
1197 Los Angeles Ave, Ste C-256
Simi Valley, CA 93065
Date: 2/13/2026
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Table of Contents
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TABLE OF CONTENTS
1.0 Introduction .................................................................................................................................... 1
1.1 Purpose of Analysis and Study Objectives 1
1.2 Site Location and Study Area 1
1.3 Proposed Project Description 1
2.0 Fundamentals of Noise ................................................................................................................... 4
2.1 Sound, Noise and Acoustics 4
2.2 Frequency and Hertz 4
2.3 Sound Pressure Levels and Decibels 4
2.4 Addition of Decibels 4
2.5 Human Response to Changes in Noise Levels 5
2.6 Noise Descriptors 5
2.7 Traffic Noise Prediction 6
2.8 Sound Propagation 7
3.0 Ground-Bourne Vibration Fundamentals ...................................................................................... 8
3.1 Vibration Descriptors 8
3.2 Vibration Perception 8
4.0 Regulatory Setting ........................................................................................................................... 9
4.1 Federal Regulations 9
4.2 State Regulations 9
5.3 City of La Quinta Noise Regulations 10
4.4 CEQA Guidelines 14
5.0 Study Method and Procedure ....................................................................................................... 15
5.1 Noise Measurement Procedure and Criteria 15
5.2 Noise Measurement Location 15
5.3 FHWA Traffic Noise Prediction Model 15
5.4 SoundPLAN Noise Model (Operational Noise) 16
5.5 FHWA Roadway Construction Noise Model 16
6.0 Existing Noise Environment .......................................................................................................... 18
6.1 Long-Term Noise Measurement Results 18
7.0 Future Noise Environment Impacts and Mitigation ..................................................................... 20
7.1 Future Off-Site Exterior Noise 20
7.1.1 Future Off-Site Traffic Noise Impact 20
7.1.2 Noise Impacts to Off-Site Receptors Due to Stationary Sources 20
8.0 Construction Noise Impact ........................................................................................................... 23
8.1 Off-site Construction Noise 23
8.3 Off-site Construction Vibration 24
9.0 References .................................................................................................................................... 27
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Table of Contents
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LIST OF APPENDICES
Appendix A: Photographs and Field Measurement Data ....................................................................... 1
Appendix B: Traffic Noise Modeling Output .......................................................................................... 2
Appendix C: SoundPLAN Reference Data ............................................................................................... 3
Appendix D: Construction Noise Modeling Output ................................................................................ 4
LIST OF EXHIBITS
Exhibit A: Location Map ..................................................................................................................... 2
Exhibit B: Site Plan .............................................................................................................................. 3
Exhibit C: Typical A-Weighted Noise Levels ....................................................................................... 4
Exhibit D: Land Use Compatibility Guidelines ................................................................................... 11
Exhibit E: Measurement Locations .................................................................................................. 17
Exhibit F: Project Operational Noise Levels (dBA, Leq) ................................................................... 22
LIST OF TABLES
Table 1: Exterior Noise Standards ............................................................................................................. 12
Table 2: Roadway Parameters and Vehicle Distribution .......................................................................... 16
Table 3: Long-Term Noise Measurement Data, NM1 1 ............................................................................. 18
Table 4: Long-Term Noise Measurement Data, NM2 1 ............................................................................. 19
Table 5: Worst-Case Predicted Nighttime Operational Leq Noise Levels (dBA) ...................................... 21
Table 6: Typical Construction Noise Levels1 ............................................................................................. 23
Table 7: Off-site Construction Noise Levels at Existing Adjacent Residence to the North ....................... 24
Table 8: Guideline Vibration Damage Potential Threshold Criteria ......................................................... 25
Table 9: Vibration Source Levels for Construction Equipment 1 ............................................................... 25
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Introduction
1
1.0 Introduction
1.1 Purpose of Analysis and Study Objectives
This noise assessment was prepared to evaluate the potential noise impacts for the project study area
and to recommend noise mitigation measures, if necessary, to minimize the potential noise impacts. The
assessment was conducted and compared to the noise standards set forth by the Federal, State, and
Local agencies. Consistent with the City’s Noise Guidelines, the project must demonstrate compliance
with the applicable noise criterion as outlined within the City’s Noise Element and Municipal Code.
The following is provided in this report:
x A description of the study area and the proposed project
x Information regarding the fundamentals of noise
x A description of the local noise guidelines and standards
x An analysis of traffic noise impacts to and from the project site
x An analysis of construction noise impacts
1.2 Site Location and Study Area
The project site is located at 49401 Avenida Obregon in the City of La Quinta, CA, as shown in Exhibit A.
Land uses surrounding the site include the existing resort/hotel uses in all cardinal directions. The
nearest residential use is approximately 400 feet north of the project site. Avenida Obregon is to the
east.
1.3 Proposed Project Description
The project involves the renovation and modernization of the existing Family Pool at the operating resort
hotel. The renovation will refresh and reconfigure the existing pool area to include new water features,
kid-friendly pools with beach entry, expanded cabanas, a larger lounging deck, and integrated shaded
areas. There is an existing bar and kitchen that will remain in operation and will continue to provide
poolside food and beverage service. The proposed site plan is illustrated in Exhibit B.
This study assesses the operational noise and traffic noise to and from the project site and compares the
results to the applicable City noise standards. In addition, this study assesses the impact of construction
noise impacts associated with project construction activities.
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2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Fundamentals of Noise
4
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 the 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 its 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 L p) is used to
describe in logarithmic units the ratio of actual
sound pressures to a reference pressure squared.
These units are called decibels, abbreviated dB. Exhibit C illustrates reference sound levels for different
noise sources.
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 sounds or 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. If two sounds differ by approximately 10 dB, the higher sound level is the predominant sound.
Exhibit C: Typical A-Weighted Noise Levels
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City of La Qunita, CA Fundamentals of Noise
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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 loud. 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.
Changes in Intensity Level,
dBA
Changes in Apparent
Loudness
1 Not perceptible
3 Just perceptible
5 Clearly noticeable
10 Twice (or half) as loud
https://www.fhwa.dot.gov/environMent/noise/regulations_and_guidance/polguide/polguide02.cfm
2.6 Noise Descriptors
Noise in our daily environment fluctuates over time. Some noise levels occur in regular patterns, while
others occur randomly. Some noise levels are constant, while others are sporadic. Noise descriptors were
created to describe the different time-varying noise levels.
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.
Community Noise Equivalent Level (CNEL): The average equivalent A-weighted sound level during a 24-
hour day, obtained after the addition of five (5) decibels to sound levels in the evening from 7:00 to 10:00
PM and after the 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).
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City of La Qunita, CA Fundamentals of Noise
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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 th e 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 in the sound level exceeded 10 percent of the sample time. Similarly L50, L90 and L99, etc.
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.
Single Event Noise Exposure Level (SENEL): The dB(A) level, which, if it lasted for one second, would
produce the same A-weighted sound energy as the actual event.
2.7 Traffic Noise Prediction
Noise levels associated with traffic depend on a variety of factors: (1) volume of traffic, (2) speed of
traffic, (3) auto, medium truck (2 axle), and heavy truck percentage (3 axle and greater), and sound
propagation. The greater the volume of traffic, higher speeds and truck percentages equate to a louder
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City of La Qunita, CA Fundamentals of Noise
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volume in noise. A doubling of the Average Daily Traffic (ADT) along a roadway will increase noise levels
by approximately 3 dB; reasons for this are discussed in the sections above.
2.8 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 a 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 4.5 dB per doubling of distance for a line source and 7.5 dB per doubling of distance
for a point source.
Research has demonstrated that atmospheric conditions can have a significant effect on noise levels
when noise receivers are located 200 feet or more from a noise source. Wind, temperature, air humidity
and turbulence can further impact have far sound can travel.
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3.0 Ground-Bourne Vibration Fundamentals
3.1 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 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.
3.2 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.
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, 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.
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City of La Qunita, CA Regulatory Setting
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4.0 Regulatory Setting
The proposed project is located in the City of La Quinta, and noise regulations are addressed through the
efforts of various federal, state, and local government agencies. The agencies responsible for regulating
noise are discussed below.
4.1 Federal Regulations
The adverse impact of noise was officially recognized by the federal government in the Noise Control Act
of 1972, which serves three purposes:
x Publicize noise emission standards for interstate commerce
x Assist state and local abatement efforts
x Promote noise education and research
The Federal Office of Noise Abatement and Control (ONAC) originally was 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 for regulating noise from aircraft and airports.
The Federal Highway Administration (FHWA) is responsible for regulating 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 advocates 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 has 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.
4.2 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 the compatibility of sensitive uses with various
incremental levels of noise.
The State of California has established noise insulation standards as outlined in Title 24, the California
Building Code, 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
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noise element usually recognizes 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, as illustrated in
Exhibit D.
5.3 City of La Quinta Noise Regulations
The City of La Quinta outlines their noise regulations and standards within the Noise Element from the
General Plan and Municipal Code. For purposes of this analysis, the City's General Plan and Noise
Ordinance (Section 9.100.210) is used to evaluate the stationary noise impacts from the proposed
Project. The Noise Element outlines Goals and Polices and establishes Noise/Land Use Compatibility
Criteria. The project impacts were compared to the City's residential and commercial noise standards.
City of La Quinta General Plan
Applicable policies and standards governing environmental noise in the City are set forth in Chapter IV
of the General Plan, Environmental Hazards, Noise. Table IV-3 (Exhibit D of this report) of the City’s Noise
Element outlines the exterior noise standards for community noise environments.
In addition to the noise standards, the City has outlined goals, policies, and implementation measures
to reduce potential noise impacts, which are presented below:
Goals, Policies, and Implementation Measures
Applicable policies, goals, and implementation program measures from the Noise Element that would
mitigate potential impacts on noise include the following.
Goal N-1: A healthful noise environment which complements the City’s residential and resort character.
Policy N.1.3: New non-residential development located adjacent to existing residential
development, sensitive receptors or residentially designated land, shall be required
to submit a noise impact analysis in conjunction with the first Planning Department
application, which demonstrates that it will not significantly impact the adjacent
residential development or residential land.
Policy N.1.5: All noise impact analysis will include, at a minimum, short-term construction noise
and noise generated by the daily operation of the project at build out.
Policy N.1.6: The City may require remedial noise control plans and/or improvements for areas
experiencing noise in excess of adopted City standards.
Program N1.6.a: Remedial improvements will be included in the Capital Improvement Program.
Policy N.1.7: Noise impact analysis shall be included in all City Capital Improvement Plan (CIP)
and developer-required roadway widening projects to demonstrate compliance
with City noise standards.
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Exhibit D: Land Use Compatibility Guidelines
City of La Quinta Municipal Code
Section 9.100.210 of the City’s Municipal Code outlines the City’s noise ordinance.
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Section 9.100.210 – Noise Control
A. Purpose. The noise control standards for nonresidential land use districts set forth in this section
are established to prevent excessive sound levels which are detrimental to the public health,
welfare and safety or which are contrary to the public interest.
B. Noise Standards. Exterior noise standards are set forth below (Exhibit D in this report). Residential
property, schools, hospitals, and churches are considered noise sensitive land uses, regardless of
the land use district in which they are located. All other uses shall comply with the “other
nonresidential” standard. All noise measurements shall be taken using standard noise measuring
instruments. Measurements shall be taken within the receiving property at locations determined
by director to be most appropriate to the individual situation.
All ambient noise measurements shall commence at the base ambient noise levels in decibels within the
respective times and zones as follows:
Table 1: Exterior Noise Standards
Receiving Land Use Noise Standard (dBA)
7:00 a.m. - 10:00 p.m. 10:00 p.m. - 7:00 a.m.
Noise sensitive 65 50
Other nonresidential 75 65
If the noise consists entirely of impact noise, simple tone noise, speech or music, or any combination
thereof, each of the noise levels specified in the table in this section shall be reduced by five (5) dB(A).
C. Noise Limits. It is unlawful for any person at any location within the city to create any noise, or
to allow the creation of any noise on property owned, leased, occupied or otherwise controlled
by such person, when such noise causes the noise level, when measured on any adjacent
property, to exceed:
1. The noise standard for a cumulative period of more than thirty (30) minutes in any hour:
2. The noise standard plus five (5) dB(A) for a cumulative period of more than fifteen (15)
minutes in any hour;
3. The noise standard plus ten (10) dB(A) for a cumulative period of more than five (5)
minutes in any hour;
4. The noise standard plus fifteen (15) dB(A) for a cumulative period of more than one (1)
minute in any hour; or
5. The noise standard plus twenty (20) dB(A) for any period of time.
For purposes of this section, the term “cumulative period” means the number of minutes that
noise occurs within any hour, whether such minutes are consecutive or not.
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D. Ambient Noise Level. If the ambient or background noise level exceeds any of the preceding noise
categories, no increase above such ambient noise level shall be permitted.
E. Exceptions. The following are exempt from noise restrictions of this section:
1. Emergency vehicles or other emergency operations.
2. City maintenance, construction or similar activities.
3. Construction activities regulated by Section 6.08.050 of the La Quinta Municipal Code.
4. Golf course maintenance activities between 5:30 a.m. and ending no later than 8:00 p.m.
on any given day
F. Enforcement. The city manager or designee shall have the responsibility and authority to enforce
the provisions of this section.
Chapter 6.08.050 – Disturbances by construction noises
A. It is a nuisance and it is unlawful, for any person to be engaged or employed, or for any person
to cause any other person to be engaged or employed, in any work of construction, erection,
alteration, repair, addition to, or improvement to realty, except between the hours set forth as
follows:
October 1st through April 30th
Monday – Friday: 7:00 a.m. to 5:30 p.m.
Saturday: 8:00 a.m. to 5:00 p.m.
Sunday: none
Holidays*: none
May 1st through September 30th
Monday – Friday: 6:00 a.m. to 7:00 p.m.
Saturday: 8:00 a.m. to 5:00 p.m.
Sunday: none
Holidays*: none
*For purposes of this section, the following shall be considered Holidays:
New Year’s Day (January 1st)
Dr. Martin Luther King Jr. Day (third Monday in January)
President’s Day (third Monday in February formerly Washington’s birthday)
Memorial Day (last Monday in May)
Independence Day (July 4th)
Labor Day (first Monday in September)
Veteran’s Day (November 11th)
Thanksgiving (fourth Thursday in November)
Christmas Day (December 25th)
B. No person doing or causing work prohibited by subsection A of this section, after being informed
orally or in writing that the work is in violation of subsection A, shall fail, refuse or neglect to
cease said work.
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Exceptions:
1. Emergency repair of existing installations or equipment or appliances:
2. Construction work complying with the terms of a written early work permit which
may be issued by the city manager or designee, upon a showing of sufficient need
due to hot or inclement weather, or the use of an unusually long process material,
or other circumstances of unusual and compelling nature.
4.4 CEQA Guidelines
According to CEQA guidelines, the project would have a potential impact if it resulted 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?
b) Generation of excessive groundborne vibration or groundborne noise levels?
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?
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Study Method and Procedure
15
5.0 Study Method and Procedure
The following section describes the noise modeling procedures and assumptions used for this
assessment.
5.1 Noise Measurement Procedure 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:
x Locations expected to receive the highest noise impacts, such as the first row of houses
x Locations that are acoustically representative and equivalent of the area of concern
x Human land usage
x Sites clear of major obstruction and contamination
MD conducted the sound level measurements in accordance to the County’s and Caltrans (TeNS) 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). The following gives a
brief description of the Caltrans Technical Noise Supplement procedures for sound level measurements:
x Microphones for sound level meters were placed 5-feet above the ground for all measurements
x Sound level meters were calibrated (Larson Davis CAL 200) before and after each measurement
x Following the calibration of equipment, a windscreen was placed over the microphone
x Frequency weighting was set on “A” and slow response
x Results of the long-term noise measurements were recorded on field data sheets
x During any short-term noise measurements, any noise contaminations such as barking dogs, local
traffic, lawn mowers, or aircraft fly-overs were noted
x Temperature and sky conditions were observed and documented
5.2 Noise Measurement Location
The noise monitoring locations were selected to obtain a baseline of the existing noise environment. Two
(2) long-term 24-hour noise measurements were conducted at the project site. Appendix A includes photos,
the field sheet, and measured noise data. Exhibit E illustrates the location of the measurements.
5.3 FHWA Traffic Noise Prediction Model
Traffic noise impact from vehicular traffic was projected using ADT data from the La Quinta Resort Traffic
Study prepared by Urban Crossroads in 2009. Using this data, ADT volumes from the year 2009 were
calculated along the segments of Avenida Fernando, Eisenhower Drive, and Calle Mazatlan closest to the
project. Table 2 (below) shows the 2009 ADTs of the subject roadways used in the traffic noise analysis.
<Table 2, next page>
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Study Method and Procedure
16
Table 2: Roadway Parameters and Vehicle Distribution
Roadway Segment 2009 ADT1
Ventura Blvd West of Whitsett Ave 1,900
Whitsett Ave North of Ventura Blvd 8,100
1. 2009 ADTs taken from the La Quinta Resort Traffic Study prepared by Urban Crossroads.
5.4 SoundPLAN Noise Model (Operational Noise)
SoundPLAN (SP) acoustical modeling software was utilized to model future worst-case stationary noise
impacts to the adjacent land uses. SP is capable of evaluating multiple stationary noise source impacts
at various receiver locations. SP’s software utilizes algorithms (based on the inverse square law and
reference equipment noise level data) to calculate noise level projections. The software allows the user
to input specific noise sources, spectral content, sound barriers, building placement, topography, and
sensitive receptor locations.
Sources of operational noise associated with the project include a water slide, lounging/dining areas,
and pool noise. Pool equipment is assumed to be shielded from exterior uses. The future worst-case
noise level projections were modeled using referenced sound level data from the SoundPLAN library for
the various stationary on-site sources. As a worst-case scenario, the model assumes the water slide,
lounging/dining areas, and pool are always operating at full capacity.
Referenced SoundPLAN library sound level data was utilized to model the various stationary on-site noise
sources associated with project operation. The model is able to evaluate the noise-attenuating effects
of any existing property line walls. Input and output calculations are provided in Appendix C.
5.5 FHWA Roadway Construction Noise Model
The construction noise analysis utilizes the Federal Highway Administration (FHWA) Roadway
Construction Noise Model (RNCM), together with several key construction parameters. Key inputs
include distance to the sensitive receiver, equipment usage, % usage factor, and baseline parameters for
the project site.
The project was analyzed based on the different construction phases. The construction noise calculation
output worksheet is in Appendix D.
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2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Existing Noise Environment
18
6.0 Existing Noise Environment
Two (2) 24-hour noise measurements were conducted at the project site to document the existing noise
environment. The measurement includes the 1-hour Leq, Lmin, Lmax, and other statistical data (e.g., L2,
L8). Noise measurement locations are provided in Exhibit E.
6.1 Long-Term Noise Measurement Results
The results of the long-term noise data from location 1 (NM1) are presented in Table 3. The quietest
recorded daytime hourly level is highlighted in green while the loudest recorded hourly level is
highlighted in orange.
Table 3: Long-Term Noise Measurement Data, NM11
Date Start Stop 1-Hour dB(A)
LEQ LMAX LMIN L2 L8 L25 L50 L90
2/4/2026 1:00 PM 2:00 PM 51.2 79.1 41.1 60.9 52.8 49.7 45.7 43.1
2/4/2026 2:00 PM 3:00 PM 49.0 73.6 40.6 55.3 53.4 49.7 46.5 42.9
2/4/2026 3:00 PM 4:00 PM 55.9 74.1 41.1 62.2 61.0 56.2 50.3 44.0
2/4/2026 4:00 PM 5:00 PM 57.5 78.7 43.1 63.3 60.7 58.1 56.3 51.5
2/4/2026 5:00 PM 6:00 PM 62.8 76.6 43.6 66.7 66.3 64.3 62.1 53.3
2/4/2026 6:00 PM 7:00 PM 69.9 77.6 53.5 73.1 72.6 71.2 69.7 62.7
2/4/2026 7:00 PM 8:00 PM 72.8 80.5 65.1 74.3 74.0 73.5 72.9 70.9
2/4/2026 8:00 PM 9:00 PM 75.2 81.5 67.6 77.0 76.4 75.8 75.3 73.5
2/4/2026 9:00 PM 10:00 PM 76.3 83.9 68.7 77.8 77.6 77.1 76.3 74.2
2/4/2026 10:00 PM 11:00 PM 62.8 84.5 45.1 69.7 66.0 62.4 58.7 55.2
2/4/2026 11:00 PM 12:00 AM 56.4 75.9 42.0 62.6 61.4 57.4 53.3 49.0
2/5/2026 12:00 AM 1:00 AM 57.7 85.9 41.8 62.2 60.1 57.9 55.7 50.1
2/5/2026 1:00 AM 2:00 AM 47.5 72.2 40.8 56.8 50.4 43.8 42.4 41.7
2/5/2026 2:00 AM 3:00 AM 47.4 72.1 41.1 53.8 45.5 43.2 42.2 41.8
2/5/2026 3:00 AM 4:00 AM 45.4 62.3 41.6 49.6 49.3 43.6 43.0 42.4
2/5/2026 4:00 AM 5:00 AM 43.7 57.7 42.1 45.9 44.3 43.8 43.5 43.0
2/5/2026 5:00 AM 6:00 AM 45.0 59.8 42.3 51.1 46.1 44.7 44.1 43.2
2/5/2026 6:00 AM 7:00 AM 50.4 72.7 43.0 59.7 53.3 47.5 45.9 44.6
2/5/2026 7:00 AM 8:00 AM 53.5 75.2 45.1 59.2 55.2 51.1 50.3 48.7
2/5/2026 8:00 AM 9:00 AM 58.5 77.2 43.9 65.1 64.7 60.4 51.4 48.2
2/5/2026 9:00 AM 10:00 AM 56.6 79.1 44.0 65.0 61.4 56.1 53.8 48.9
2/5/2026 10:00 AM 11:00 AM 50.3 72.2 42.9 55.6 54.3 50.3 47.7 44.8
2/5/2026 11:00 AM 12:00 PM 50.6 69.2 43.0 56.4 53.1 50.8 49.1 46.6
2/5/2026 12:00 PM 1:00 PM 50.2 68.5 42.5 58.7 54.6 48.4 46.4 44.8
CNEL 71.6
Notes:
1. Long-term noise monitoring location (NM1) is illustrated in Exhibit E.
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Existing Noise Environment
19
The results of the long-term noise data from location 2 (NM2) are presented in Table 4. The quietest
recorded daytime hourly level is highlighted in green while the loudest recorded hourly level is
highlighted in orange.
Table 4: Long-Term Noise Measurement Data, NM21
Date Start Stop 1-Hour dB(A)
LEQ LMAX LMIN L2 L8 L25 L50 L90
2/4/2026 1:00 PM 2:00 PM 47.9 60.9 43.6 51.3 50.1 48.4 47.2 45.2
2/4/2026 2:00 PM 3:00 PM 50.8 82.4 43.1 58.9 50.8 46 44.9 44.1
2/4/2026 3:00 PM 4:00 PM 51.6 74.9 43.8 60.2 54.9 51.3 48.2 44.8
2/4/2026 4:00 PM 5:00 PM 59.1 82.5 44.5 66.5 62.6 59.3 57.7 47.8
2/4/2026 5:00 PM 6:00 PM 73.2 86.2 45.0 78.6 77.1 74.9 73.0 54.5
2/4/2026 6:00 PM 7:00 PM 81.3 89.9 56.2 84.6 83.9 82.7 81.1 73.8
2/4/2026 7:00 PM 8:00 PM 83.3 89.7 72.5 84.8 84.6 84.2 83.2 81.8
2/4/2026 8:00 PM 9:00 PM 84.5 90.9 76.2 86.2 85.6 85.0 84.4 83.1
2/4/2026 9:00 PM 10:00 PM 85.8 91.7 78.9 87.4 86.8 86.4 86.0 84.2
2/4/2026 10:00 PM 11:00 PM 69.6 91.2 45.0 80.5 69.8 61.5 59.4 54.6
2/4/2026 11:00 PM 12:00 AM 56.3 78.8 44.9 63.7 59.4 55.3 52.4 46.1
2/5/2026 12:00 AM 1:00 AM 57.4 81.6 44.9 65.3 60.6 55.3 51.2 46.7
2/5/2026 1:00 AM 2:00 AM 45.8 59.5 44.6 47.4 46.5 45.9 45.7 45.3
2/5/2026 2:00 AM 3:00 AM 45.9 50.0 44.6 46.7 46.4 46.1 45.8 45.4
2/5/2026 3:00 AM 4:00 AM 46.3 54.5 45.1 47.4 47.0 46.6 46.2 45.8
2/5/2026 4:00 AM 5:00 AM 46.8 50.6 45.1 47.7 47.4 47.0 46.7 46.2
2/5/2026 5:00 AM 6:00 AM 47.4 61.8 45.5 48.9 47.9 47.6 47.2 46.4
2/5/2026 6:00 AM 7:00 AM 53.2 68.0 46.2 63.1 57.9 48.8 48.3 47.4
2/5/2026 7:00 AM 8:00 AM 55.0 68.6 47.3 60.5 59.1 56.5 51.2 48.9
2/5/2026 8:00 AM 9:00 AM 54.9 67.7 46.2 59.4 57.9 56.3 53.9 48.9
2/5/2026 9:00 AM 10:00 AM 52.9 68.8 46.6 57.1 55.1 54.0 52.1 50.1
2/5/2026 10:00 AM 11:00 AM 49.6 62.6 45.8 54.1 52.0 50.2 48.7 47.0
2/5/2026 11:00 AM 12:00 PM 56.0 72.1 45.3 59.3 58.5 57.0 56.0 50.3
2/5/2026 12:00 PM 1:00 PM 48.0 61.0 45.2 53.7 49.3 48.2 46.8 46.1
CNEL 81.0
Notes:
1. Long-term noise monitoring location (NM2) is illustrated in Exhibit E.
Noise data indicates the ambient noise level ranged from 43 to 86 hourly dBA Leq and 72 to 81 dBA CNEL
on the project site. From the hours of 5PM to 10 PM, an event on the property caused the noise levels
to increase up to 86 dBA Leq hourly. Additional field notes are provided in Appendix A.
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Future Noise Environment Impacts and Mitigation
20
7.0 Future Noise Environment Impacts and Mitigation
This assessment analyzes future noise impacts to and from the project and compares the results to the
City’s Noise Standards. The analysis details the estimated exterior noise levels associated with traffic
from adjacent roadway sources and project operations. There are no airports within 2 miles of the
project site.
7.1 Future Off-Site Exterior Noise
The exterior noise level off-site of the project will be impacted by transportation-related sources and
stationary sources from the site. The following outlines the impacts associated with exterior noise levels.
7.1.1 Future Off-Site Traffic Noise Impact
The potential noise impacts caused by the increase in vehicular traffic as a result of the project were
analyzed using ADT data from the La Quinta Resort Traffic Study prepared by Urban Crossroads in 2009.
Using this data, ADT volumes from the year 2009 were calculated along the segments of Avenida
Fernando, Eisenhower Drive, and Calle Mazatlan closest to the project. It takes a doubling of traffic
volumes to audibly increase traffic noise levels along a roadway. The addition of the pool renovation
project is not expected to double the 2009 ADT volumes along Avenida Fernando, Eisenhower Drive, or
Calle Mazatlan. Thus, the noise impact to off-site receptors due to project traffic is less than significant.
This is based on a conservative assumption, as the ADT volumes along the subject roadways have likely
increased since 2009. See Appendix B for ADT volume calculations.
7.1.2 Noise Impacts to Off-Site Receptors Due to Stationary Sources
Sensitive receptors that may be affected by project operational noise include existing residences to the
north and west. The worst-case stationary noise was modeled using SoundPLAN acoustical modeling
software. Worst-case assumes that the water slide and all dining/lounging and pool are in use
simultaneously and at full capacity. Project operations are expected to occur during daytime hours. Thus,
project operational noise projections are compared to the quietest expected daytime noise levels as a
conservative worst-case scenario.
A total of five (5) receptors were modeled to evaluate the proposed project’s operational impact. A
receptor is denoted by a yellow dot. All yellow dots represent either a property line or a sensitive
receptor, such as a building facade. Receptors 1, 2, and 3 represent off-site residential uses to the north,
while receptors 4 and 5 represent off-site residential uses to the west.
Project-Only Levels
Exhibit F shows the “Project-Only” noise levels and contours at the nearest sensitive receptors. The
project-only hourly noise levels range from 45 to 61 dBA Leq at the various adjacent receptors.
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Future Noise Environment Impacts and Mitigation
21
Project Plus Ambient Operational Noise Levels
Table 5 demonstrates the project plus the ambient noise levels during the quietest expected daytime
conditions. The existing quietest ambient noise level at each receptor location was determined using the
quietest recorded hourly noise level measured on site (see Section 6.1). Project plus ambient noise level
projections are anticipated to be 50 to 61 dBA Leq.
Table 5: Worst-Case Predicted Nighttime Operational Leq Noise Levels (dBA)
Receptor1
Existing Ambient
Noise Level
(dBA, Leq)2
Project
Noise Level
(dBA, Leq)3
Daytime Noise
Level Limit
(dBA, Leq)
Total Combined
Noise Level
(dBA, Leq)
Potential
Significant
Impact
1 48 52 65 54 No
2 48 45 65 50 No
3 48 59 65 59 No
4 48 61 65 61 No
5 48 52 65 54 No
Notes:
1. Receptors 1, 2, and 3 represent off-site residential uses to the north and receptors 4 and 5 represent off-site residential uses to the west.
2. See Appendix A for the ambient noise measurement.
3. See Exhibit F for the operational noise level projections at said receptors.
As shown in Table 5, the project plus ambient noise level will reach a maximum of 61 dBA Leq during the
quietest daytime hour at the nearest sensitive off-site receptors. This is below the 65 dBA Leq exterior
stationary noise level limit for sensitive uses outlined in section 9.100.210 of the La Quinta Municipal
Code. Thus, project operational noise will meet the City's noise limits, and the impact is less than
significant.
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2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Construction Noise Impact
23
8.0 Construction Noise Impact
The degree of construction noise may vary for different areas of the project site and also vary depending
on the construction activities. Noise levels associated with the construction will vary with the different
phases of construction. The construction noise and vibration level projections are provided in the
sections below.
8.1 Off-site Construction Noise
The Environmental Protection Agency (EPA) has compiled data regarding the noise characteristics of
typical construction activities. The data is presented in Table 6.
Table 6: Typical Construction Noise Levels1
Equipment Powered by Internal Combustion Engines
Type Noise Levels (dBA) at 50 Feet
Earth Moving
Compactors (Rollers) 73 - 76
Front Loaders 73 - 84
Backhoes 73 - 92
Tractors 75 - 95
Scrapers, Graders 78 - 92
Pavers 85 - 87
Trucks 81 - 94
Materials Handling
Concrete Mixers 72 - 87
Concrete Pumps 81 - 83
Cranes (Movable) 72 - 86
Cranes (Derrick) 85 - 87
Stationary
Pumps 68 - 71
Generators 71 - 83
Compressors 75 - 86
Impact Equipment
Type Noise Levels (dBA) at 50 Feet
Saws 71 - 82
Vibrators 68 - 82
Notes:
1 Referenced Noise Levels from the Environmental Protection Agency (EPA)
Construction is anticipated to occur during the permissible hours as described in the La Quinta Municipal
Code Section 6.08.050(A). Thus, construction noise is exempt from regulation per section 9.100.201(E)
of the City’s Municipal Code.
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Construction Noise Impact
24
Construction noise is considered a short-term impact and would be considered significant if construction
occurs outside the allowable times as described in the City’s Municipal Code. Construction noise will
have a temporary or periodic increase in the ambient noise level above the existing within the project
vicinity. The construction noise impact is considered less than significant; however, construction noise
level projections are provided.
Typical operating cycles for these types of construction equipment may involve one or two minutes of
full power operation followed by three to four minutes at lower power settings. Noise levels are in Table
7. A likely worst-case construction noise scenario assumes equipment operating as close as 330 feet and
an average of 435 feet from the nearest off-site sensitive receptor, the residences to the north of the
project site.
Table 7: Off-site Construction Noise Levels at Existing Adjacent Residence to the North
Phase dBA Leq
Demo 69.7
Site Prep 64.8
Grading 65.8
Build 64.9
Paving 65.6
Arch Coating 55.2
The noise due to project construction activities will range between 55 and 70 dBA Leq at the nearest off-
site residences to the north. The construction activities will take place in the allowed times per section
6.08.050(A) of the La Quinta Municipal Code. Thus, noise due to construction is less than significant.
8.3 Off-site Construction Vibration
Construction activities can produce vibration that may be felt by adjacent land uses. The construction of
the proposed project would not require the use of equipment such as pile drivers, which are known to
generate substantial construction vibration levels. The primary vibration source during construction may
be from a vibratory roller. A vibratory roller has a vibration impact of 0.21 inches per second peak particle
velocity (PPV) at 25 feet which is perceptible but below any risk to architectural damage.
The fundamental equation used to calculate vibration propagation through average soil conditions and
distance is as follows:
PPVequipment = PPVref (100/Drec)n
Where: PPVref = reference PPV at 100ft.
Drec = distance from equipment to receiver in ft.
n = 1.1 (the value related to the attenuation rate through ground)
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Construction Noise Impact
25
The thresholds from the Caltrans Transportation and Construction Induced Vibration Guidance Manual
in Table 8 (below) provides general thresholds and guidelines as to the vibration damage potential from
vibratory impacts.
Table 8: Guideline Vibration Damage Potential Threshold Criteria
Structure and Condition
Maximum PPV (in/sec)
Transient Sources Continuous/Frequent
Intermittent Sources
Extremely fragile historic buildings, ruins, ancient monuments 0.12 0.08
Fragile buildings 0.2 0.1
Historic and some old buildings 0.5 0.25
Older residential structures 0.5 0.3
New residential structures 1.0 0.5
Modern industrial/commercial buildings 2.0 0.5
Source: Table 19, Transportation and Construction Vibration Guidance Manual, Caltrans, Sept. 2013.
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.
Table 9 gives approximate vibration levels for particular construction activities. This data provides a
reasonable estimate for a wide range of soil conditions.
Table 9: Vibration Source Levels for Construction Equipment1
Equipment
Peak Particle Velocity Approximate Vibration Level
(inches/second) at 25 feet LV (dVB) at 25 feet
Pile driver (impact) 1.518 (upper range) 112
0.644 (typical) 104
Pile driver (sonic) 0.734 upper range 105
0.170 typical 93
Clam shovel drop (slurry wall) 0.202 94
Hydromill 0.008 in soil 66
(slurry wall) 0.017 in rock 75
Vibratory Roller 0.21 94
Hoe Ram 0.089 87
Large bulldozer 0.089 87
Caisson drill 0.089 87
Loaded trucks 0.076 86
Jackhammer 0.035 79
Small bulldozer 0.003 58
1 Source: Transit Noise and Vibration Impact Assessment, Federal Transit Administration, May 2006.
The nearest off-site receptor to construction activities is a residential building located approximately 330
feet to the north of the site. At a distance of 330 feet, a vibratory roller would yield a worst-case 0.012
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA Construction Noise Impact
26
PPV (in/sec) which will likely not be perceptible and below any risk of damage (0.3 in/sec PPV is the
threshold of old residential structures). The impact is less than significant, and no mitigation is required.
2895 LQ Resort and Club – Pool Renovation
Noise Impact Study
City of La Qunita, CA References
27
9.0 References
City of La Quinta
1999 General Plan Noise Element
2024 Municipal Code
2024 Construction Noise and Vibration, Updates to Thresholds and Methodology
California Department of Transportation (Caltrans)
2013 Transportation and Construction Induced Vibration Guidance Manual.
2018 Technical Noise Supplement to the Traffic Noise Analysis Protocol. Sept.
Federal Highway Administration (FHWA)
2010 Highway Traffic Noise Analysis and Abatement Policy and Guidance.
https://www.fhwa.dot.gov/environMent/noise/regulations_and_guidance/polguide/polguide02.cfm
Federal Transit Administration (FTA)
2018 Transit Noise and Vibration Impact Assessment Manual
Governor’s Office of Planning and Research
State of California General Plan Guidelines, 1998
SoundPLAN International, LLC
2025 SoundPLAN Essential 9.0 Manual.
Appendix A:
Photographs and Field Measurement Data
Appendix B:
Traffic Noise Modeling Output
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8
8
2
4
3
7
2
9
2
0
1
6
3
1
4
2
4
1
,
1
2
4
8
,
1
0
0
1
0
,
0
0
0
2
,
9
0
0
1
,
5
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EX
I
S
T
I
N
G
A
D
T
'
S
B
Y
L
E
G
Appendix C:
SoundPLAN Reference Data
28
9
5
L
a
Q
u
i
n
t
a
R
e
s
o
r
t
&
C
l
u
b
Co
n
t
r
i
b
u
t
i
o
n
s
p
e
c
t
r
a
-
0
0
1
-
2
8
9
5
L
a
Q
u
i
n
t
a
R
e
s
o
r
t
&
C
l
u
b
:
O
u
t
d
o
o
r
S
P
23
So
u
r
c
e
Ti
m
e
sl
i
c
e
Su
m
dB
(
A
)
40
0
H
z
dB
(
A
)
50
0
H
z
dB
(
A
)
63
0
H
z
dB
(
A
)
Re
c
e
i
v
e
r
R
1
F
l
G
L
r
,
l
i
m
d
B
(
A
)
L
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q
,
d
5
2
.
1
d
B
(
A
)
S
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g
m
a
(
L
e
q
,
d
)
0
.
0
d
B
(
A
)
Po
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l
Le
q
,
d
32
.
7
27
.
9
27
.
9
27
.
9
Po
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l
Le
q
,
d
22
.
4
17
.
6
17
.
6
17
.
6
Po
o
l
Le
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,
d
40
.
9
36
.
1
36
.
1
36
.
1
Se
a
t
i
n
g
Le
q
,
d
15
.
5
10
.
7
10
.
7
10
.
7
Se
a
t
i
n
g
Le
q
,
d
17
.
6
12
.
9
12
.
9
12
.
9
Se
a
t
i
n
g
Le
q
,
d
15
.
0
10
.
2
10
.
2
10
.
2
Se
a
t
i
n
g
Le
q
,
d
16
.
4
11
.
6
11
.
6
11
.
6
Se
a
t
i
n
g
Le
q
,
d
17
.
1
12
.
3
12
.
3
12
.
3
Se
a
t
i
n
g
Le
q
,
d
18
.
4
13
.
6
13
.
6
13
.
6
Th
e
m
e
Pa
r
k
s
Le
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d
51
.
7
46
.
9
46
.
9
46
.
9
Re
c
e
i
v
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r
R
2
F
l
G
L
r
,
l
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m
d
B
(
A
)
L
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q
,
d
4
7
.
4
d
B
(
A
)
S
i
g
m
a
(
L
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q
,
d
)
0
.
0
d
B
(
A
)
Po
o
l
Le
q
,
d
33
.
8
29
.
0
29
.
0
29
.
0
Po
o
l
Le
q
,
d
16
.
4
11
.
6
11
.
6
11
.
6
Po
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l
Le
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d
39
.
3
34
.
6
34
.
6
34
.
6
Se
a
t
i
n
g
Le
q
,
d
15
.
8
11
.
0
11
.
0
11
.
0
Se
a
t
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Le
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,
d
11
.
3
6.
6
6.
6
6.
6
Se
a
t
i
n
g
Le
q
,
d
13
.
6
8.
8
8.
8
8.
8
Se
a
t
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Le
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,
d
14
.
3
9.
5
9.
5
9.
5
Se
a
t
i
n
g
Le
q
,
d
15
.
0
10
.
2
10
.
2
10
.
2
Se
a
t
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n
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Le
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,
d
12
.
9
8.
1
8.
1
8.
1
Th
e
m
e
Pa
r
k
s
Le
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,
d
46
.
5
41
.
7
41
.
7
41
.
7
Re
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v
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r
R
3
F
l
G
L
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,
l
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m
d
B
(
A
)
L
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q
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d
4
2
.
5
d
B
(
A
)
S
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g
m
a
(
L
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,
d
)
0
.
0
d
B
(
A
)
Po
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l
Le
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,
d
32
.
1
27
.
3
27
.
3
27
.
3
Po
o
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Le
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,
d
12
.
4
7.
6
7.
6
7.
6
Po
o
l
Le
q
,
d
32
.
6
27
.
9
27
.
9
27
.
9
Se
a
t
i
n
g
Le
q
,
d
15
.
6
10
.
9
10
.
9
10
.
9
Se
a
t
i
n
g
Le
q
,
d
15
.
5
10
.
8
10
.
8
10
.
8
Se
a
t
i
n
g
Le
q
,
d
9.
8
5.
0
5.
0
5.
0
Se
a
t
i
n
g
Le
q
,
d
16
.
5
11
.
7
11
.
7
11
.
7
Se
a
t
i
n
g
Le
q
,
d
10
.
8
6.
1
6.
1
6.
1
Se
a
t
i
n
g
Le
q
,
d
6.
3
1.
6
1.
6
1.
6
Th
e
m
e
Pa
r
k
s
Le
q
,
d
41
.
6
36
.
8
36
.
8
36
.
8
So
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n
d
P
L
A
N
9
.
0
MD
A
c
o
u
s
t
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c
s
L
L
C
4
9
6
0
S
G
i
l
b
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r
t
R
d
C
h
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n
d
l
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r
A
Z
8
5
2
4
9
U
S
A
1
28
9
5
L
a
Q
u
i
n
t
a
R
e
s
o
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t
&
C
l
u
b
Co
n
t
r
i
b
u
t
i
o
n
s
p
e
c
t
r
a
-
0
0
1
-
2
8
9
5
L
a
Q
u
i
n
t
a
R
e
s
o
r
t
&
C
l
u
b
:
O
u
t
d
o
o
r
S
P
23
So
u
r
c
e
Ti
m
e
sl
i
c
e
Su
m
dB
(
A
)
40
0
H
z
dB
(
A
)
50
0
H
z
dB
(
A
)
63
0
H
z
dB
(
A
)
Re
c
e
i
v
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r
R
4
F
l
G
L
r
,
l
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B
(
A
)
L
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d
4
3
.
5
d
B
(
A
)
S
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g
m
a
(
L
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q
,
d
)
0
.
0
d
B
(
A
)
Po
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Le
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,
d
24
.
6
19
.
8
19
.
8
19
.
8
Po
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l
Le
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,
d
10
.
0
5.
2
5.
2
5.
2
Po
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Le
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d
29
.
7
24
.
9
24
.
9
24
.
9
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a
t
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Le
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d
6.
4
1.
7
1.
7
1.
7
Se
a
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d
0.
0
-4
.
8
-4
.
8
-4
.
8
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t
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d
7.
8
3.
0
3.
0
3.
0
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,
d
6.
5
1.
7
1.
7
1.
7
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Le
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,
d
5.
9
1.
1
1.
1
1.
1
Se
a
t
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n
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d
4.
4
-0
.
3
-0
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3
-0
.
3
Th
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Pa
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d
43
.
2
38
.
5
38
.
5
38
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R
5
F
l
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l
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B
(
A
)
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q
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d
5
2
.
0
d
B
(
A
)
S
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a
(
L
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d
)
0
.
0
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B
(
A
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l
Le
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,
d
33
.
7
28
.
9
28
.
9
28
.
9
Po
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l
Le
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d
17
.
0
12
.
2
12
.
2
12
.
2
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d
39
.
7
35
.
0
35
.
0
35
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0
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Le
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d
12
.
4
7.
6
7.
6
7.
6
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d
0.
2
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6
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6
-4
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6
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d
17
.
0
12
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2
12
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2
12
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2
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t
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,
d
15
.
0
10
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2
10
.
2
10
.
2
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a
t
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d
13
.
3
8.
6
8.
6
8.
6
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t
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d
13
.
6
8.
8
8.
8
8.
8
Th
e
m
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Pa
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k
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d
51
.
6
46
.
9
46
.
9
46
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9
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d
P
L
A
N
9
.
0
MD
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t
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c
s
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C
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9
6
0
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G
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l
b
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C
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n
d
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r
A
Z
8
5
2
4
9
U
S
A
2
2895 La Quinta Resort & Club
Assessed contribution level - 001 - 2895 La Quinta Resort &
9
Source Source type Leq,d
dB(A)
Receiver R1 Fl G Lr,lim dB(A) Leq,d 52.1 dB(A) Sigma(Leq,d) 0.0 dB(A)
Theme Parks Point 51.7
Pool Area 40.9
Pool Area 32.7
Pool Area 22.4
Seating Area 18.4
Seating Area 17.6
Seating Area 17.1
Seating Area 16.4
Seating Area 15.5
Seating Area 15.0
Receiver R2 Fl G Lr,lim dB(A) Leq,d 47.4 dB(A) Sigma(Leq,d) 0.0 dB(A)
Theme Parks Point 46.5
Pool Area 39.3
Pool Area 33.8
Pool Area 16.4
Seating Area 15.8
Seating Area 15.0
Seating Area 14.3
Seating Area 13.6
Seating Area 12.9
Seating Area 11.3
Receiver R3 Fl G Lr,lim dB(A) Leq,d 42.5 dB(A) Sigma(Leq,d) 0.0 dB(A)
Theme Parks Point 41.6
Pool Area 32.6
Pool Area 32.1
Seating Area 16.5
Seating Area 15.6
Seating Area 15.5
Pool Area 12.4
Seating Area 10.8
Seating Area 9.8
Seating Area 6.3
Receiver R4 Fl G Lr,lim dB(A) Leq,d 43.5 dB(A) Sigma(Leq,d) 0.0 dB(A)
Theme Parks Point 43.2
Pool Area 29.7
Pool Area 24.6
Pool Area 10.0
Seating Area 7.8
Seating Area 6.5
Seating Area 6.4
Seating Area 5.9
Seating Area 4.4
Seating Area 0.0
SoundPLAN 9.0
MD Acoustics LLC 4960 S Gilbert Rd Chandler AZ 85249 USA 1
2895 La Quinta Resort & Club
Assessed contribution level - 001 - 2895 La Quinta Resort &
9
Source Source type Leq,d
dB(A)
Receiver R5 Fl G Lr,lim dB(A) Leq,d 52.0 dB(A) Sigma(Leq,d) 0.0 dB(A)
Theme Parks Point 51.6
Pool Area 39.7
Pool Area 33.7
Seating Area 17.0
Pool Area 17.0
Seating Area 15.0
Seating Area 13.6
Seating Area 13.3
Seating Area 12.4
Seating Area 0.2
SoundPLAN 9.0
MD Acoustics LLC 4960 S Gilbert Rd Chandler AZ 85249 USA 2
28
9
5
L
a
Q
u
i
n
t
a
R
e
s
o
r
t
&
C
l
u
b
Oc
t
a
v
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s
p
e
c
t
r
a
o
f
t
h
e
s
o
u
r
c
e
s
i
n
d
B
(
A
)
-
0
0
1
-
2
8
9
5
L
a
Q
u
i
n
t
a
R
e
s
o
r
t
&
C
l
u
b
:
O
u
t
d
o
o
r
S
P
3
Na
m
e
So
u
r
c
e
t
y
p
e
l
o
r
A
m,
m
²
Li
dB
(
A
)
Rw
dB
L'
w
dB
(
A
)
Lw
dB
(
A
)
KI
dB
KT
dB
DO
-
W
a
l
l
dB
Em
i
s
s
i
o
n
s
p
e
c
t
r
u
m
50
0
H
z
dB
(
A
)
Po
o
l
Ar
e
a
71
0
.
5
4
65
.
0
93
.
5
0.
0
0.
0
0
Op
e
n
-
a
i
r
s
w
i
m
m
i
n
g
p
o
o
l
s
,
ad
u
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t
s
`
p
o
o
l
93
.
5
Po
o
l
Ar
e
a
17
.
5
5
65
.
0
77
.
4
0.
0
0.
0
0
Op
e
n
-
a
i
r
s
w
i
m
m
i
n
g
p
o
o
l
s
,
ad
u
l
t
s
`
p
o
o
l
77
.
4
Po
o
l
Ar
e
a
18
9
.
6
2
80
.
0
10
2
.
8
0.
0
0.
0
0
Op
e
n
-
a
i
r
s
w
i
m
m
i
n
g
p
o
o
l
s
,
Ch
i
l
d
r
e
n
`
s
p
o
o
l
10
2
.
8
Se
a
t
i
n
g
Ar
e
a
47
5
.
2
9
48
.
2
75
.
0
0.
0
0.
0
0
Re
s
t
a
u
r
a
n
t
,
e
a
t
i
n
g
,
m
o
d
e
s
t
co
n
v
e
r
s
a
t
i
o
n
75
.
0
Se
a
t
i
n
g
Ar
e
a
90
.
4
5
55
.
4
75
.
0
0.
0
0.
0
0
Re
s
t
a
u
r
a
n
t
,
e
a
t
i
n
g
,
m
o
d
e
s
t
co
n
v
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r
s
a
t
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o
n
75
.
0
Se
a
t
i
n
g
Ar
e
a
25
2
.
4
2
51
.
0
75
.
0
0.
0
0.
0
0
Re
s
t
a
u
r
a
n
t
,
e
a
t
i
n
g
,
m
o
d
e
s
t
co
n
v
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r
s
a
t
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n
75
.
0
Se
a
t
i
n
g
Ar
e
a
46
1
.
0
4
48
.
4
75
.
0
0.
0
0.
0
0
Re
s
t
a
u
r
a
n
t
,
e
a
t
i
n
g
,
m
o
d
e
s
t
co
n
v
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r
s
a
t
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o
n
75
.
0
Se
a
t
i
n
g
Ar
e
a
18
4
.
3
2
52
.
3
75
.
0
0.
0
0.
0
0
Re
s
t
a
u
r
a
n
t
,
e
a
t
i
n
g
,
m
o
d
e
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75
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9
U
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1
Appendix D:
Construction Noise Modeling Output
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a
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T
a
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9
.
1
R
C
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d
U
s
a
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F
a
c
t
o
r
s
Project: LQ Pool Renovation Date: 2/13/26
Source: Vibratory Roller
Scenario: Unmitigated
Location:
Address: La Quinta, CA
PPV = PPVref(25/D)^n (in/sec)
Equipment = INPUT SECTION IN BLUE
Type
PPVref = 0.21 Reference PPV (in/sec) at 25 ft.
D =330.00 Distance from Equipment to Receiver (ft)
n = 1.10 Vibration attenuation rate through the ground
PPV =0.012 IN/SEC OUTPUT IN RED
DATA OUT RESULTS
1 Vibratory Roller
Note: Based on reference equations from Vibration Guidance Manual, California Department of Transportation, 2006, pgs 38-43.
VIBRATION LEVEL IMPACT
North Residential Building
DATA INPUT