The Wren Multiple-Family Development Project
Appendix F
Date Palm Apartments
Noise Impact Study
MD Acoustics
October 17, 2023
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA
Prepared for:
Ms. Julie Gilbert
Compass Consulting Enterprises, Inc.
PO Box 2627
Avalon, CA 90704
Prepared by:
MD Acoustics, LLC
Francisco Irarrazabal
1197 Los Angeles Ave, Ste C-256
Simi Valley, CA 93065
Date: 10/17/2023
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Table of Contents
MD Acoustics, LLC ii
JN: 08052307_Report
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-Borne Vibration Fundamentals ......................................................................................... 8
3.1 Vibration Descriptors 8
3.2 Vibration Perception 8
3.3 Vibration Perception 8
4.0 Regulatory Setting ......................................................................................................................... 10
4.1 Federal Regulations 10
4.2 State Regulations 10
4.3 City of Cathedral City Noise Regulations 11
5.0 Study Method and Procedure ....................................................................................................... 17
5.1 Noise Measurement Procedure and Criteria 17
5.2 Noise Measurement Locations 17
5.3 Stationary Noise Modeling 17
5.3 FHWA Traffic Noise Prediction Model 18
5.4 FHWA Roadway Construction Noise Model 19
6.0 Existing Noise Environment .......................................................................................................... 21
6.1 Short-Term Noise Measurement Results 21
7.0 Future Noise Environment Impacts .............................................................................................. 22
7.1 Future Exterior Noise 22
7.1.1 Noise Impacts to Off-Site Receptors Due to Stationary Sources 22
7.1.2 Noise Impacts to Off -Site Receptors Due to Project Generated Traffic 24
7.1.3 Noise Impacts to On-Site Receptors Due to Traffic 25
7.1.4 Interior Noise Levels 27
7.2 Summary of Recommendations 27
8.0 Construction Noise Impact ........................................................................................................... 28 Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Table of Contents
MD Acoustics, LLC iii
JN: 08052307_Report
8.1 Construction Noise 28
8.2 Construction Vibration 29
8.3 Construction Noise Reduction Measures 30
9.0 References .................................................................................................................................... 31
LIST OF APPENDICES
Appendix A: Field Measurement Data ................................................................................................... 1 Appendix B: Traffic FHWA Worksheets .................................................................................................. 2 Appendix C: Construction Noise Modeling Output ................................................................................ 3 Appendix D: SoundPLAN Noise Modeling Inputs/Outputs and Noise Reference Levels ....................... 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 .................................................................................. 12 Exhibit E: Measurement Locations .................................................................................................. 20 Exhibit F: Operational Noise Levels Leq(h) ...................................................................................... 23 Exhibit G: Traffic Noise Levels Contours CNEL ................................................................................. 26
LIST OF TABLES
Table 1: Change in Noise Level Characteristics1 ......................................................................................... 5 Table 2: Cathedral City’s Exterior Noise Limits ......................................................................................... 15 Table 3: Roadway Parameters and Vehicle Distribution .......................................................................... 18 Table 4: Short-Term Noise Measurement Data (dBA)1 ............................................................................ 21 Table 5: Worst-case Predicted Operational Noise Level1 ......................................................................... 24 Table 6: Existing Scenario - Noise Levels Along Roadways (dBA CNEL) .................................................... 25 Table 7: Future Interior Noise Levels (dBA CNEL) ..................................................................................... 27 Table 8: Typical Construction Noise Levels1 ............................................................................................. 28 Table 9: Guideline Vibration Damage Potential Threshold Criteria ......................................................... 29 Table 10: Vibration Source Levels for Construction Equipment1 ............................................................. 30
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, 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 to the applicable noise criterion as outlined within the City’s Noise Element and Municipal Code.
The following is provided in this report:
• A description of the study area and the proposed project • Information regarding the fundamentals of noise
• A description of the local noise guidelines and standards • An analysis of traffic noise impacts to and from the project site • An analysis of construction noise impacts
1.2 Site Location and Study Area
The project site is located a t the east side of Date Palm Drive between 30 th Avenue and Mccallum Way in Cathedral City, California, as shown in Exhibit A. The site is currently zoned as general commercial and is proposed to be used as medium density residential use. The site is currently vacant and is surrounded by a vacant general commercial use to the south, existing low density residential to the north and east, and general commercial to the west across Date Palm Drive.
1.3 Proposed Project Description
The Project proposes a medium residential-use development consisting of 204 units, on 10.8 acres. As a worst-case scenario, this assessment assumes the proje ct is built -out in one (1) complete phase.
Construction activities within the Project area will consist of on -site grading , building, paving, and architectural coating.
This study assesses both the traffic and short-term stationary noise to and from the project site and compares the results to the applicable City noise limits. The primary source of traffic noise propagates from Date Palm Drive. The primary source of short-term stationary noise propagates from construction equipment to be deployed in the area for construction activities. The site plan used for this is illustrated in Exhibit B.
Exhibit A
Location Map
2 Introduction
SITE
Mccallum Way
Date Palm Dr
Date Palm Apartments
-
Noise
Noise Impact Study
City of Cathedral City, CA
30 th
Avenue
Exhibit B
Site Plan
3 Date Palm Apartments
-
Noise
Noise Impact Study
City of Cathedral City, CA
Introduction
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, 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 mechanical energy of a moving object transmitted by pressure waves through a medium to a human ear. For traffi c, 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 s ound determines it loudness.
The loudness of sound increases or decreases as the
amplitude increases or decreases. Sound pressure
amplitude is measure in units of micro -Newton per
square inch meter (N/m2), also called micro -Pascal
(µPa). One µPa is approxi mately 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 references 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
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Fundamentals of Noise
5 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.
Table 1: Change in Noise Level Characteristics1
Changes in Intensity Level,
dBA
Changes in Apparent
Loudness
1 Not perceptible
3 Just perceptible
5 Clearly noticeable
10 Twice (or half) as loud
1 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, others are random. 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 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).
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Fundamentals of Noise
6 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, l iving, 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 residenti al 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 ma y 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 depends on a variety of factors: (1) volume of traffic, (2) speed of traffic, (3) auto , medium truck (2 –3 axle) and heavy truck percentage (4 axle and greater), and sound propagation. The greater the volume of traffic, higher speeds and truck percentages equate to a louder Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Fundamentals of Noise
7 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 significan t effect on noise levels when noise receivers are located 200 feet from a noise source. Wind, temperature, air humidity and turbulence can further impact have far sound can travel.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Ground-Borne Vibration Fundamentals
8 3.0 Ground-Borne 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.
3.3 Vibration Perception
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 wave front, 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 wave front. 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 wave front. However, unlike P -waves, the particle motion is transverse, or side-to-side and perpendicular to the direction of propagation.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Ground-Borne Vibration Fundamentals
9 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.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
10 4.0 Regulatory Setting
The proposed project is located in the City of Cathedral City, California, 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:
• 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) 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 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 advocates that local jurisdiction use their land use regulatory authority to arrange new development in s uch 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 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.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
11 4.3 City of Cathedral City Noise Regulations
The City of Cathedral City outlines their noise regulations and standards within the Municipal Code and the Noise Element of the City of Cathedral City General Chapter V Section C.
City of Cathedral City General Plan
The local noise element must recognize the land use compatibility guidelines published by the State Department of Health S ervices. The guidelines rank noise land use compatibility in terms of normally acceptable, conditionally acceptable, normally unacceptable, and clearly unacceptable as illustrated in Exhibit D. (Table IV-3 and Exhibit III-12 of the City’s GP, EIR).
The Noise Element outlined in Chapter V Environmental Hazards coordinates the community’s land uses with the existing and future noise environment and designs measures intended to minimize or avoid community exposure to excessive noise levels. The implemen tation of the policies and programs contained in the Noise Element is meant to reduce or avoid current and future noise impacts.
The Noise Element identifies the major source of continuous, excessive noise in the City. Those sources are traffic noise propagating from main roadways and also freight rail service along the Southern Pacific Railroad, parallel to the I -10 highway. Airport noise can impact occasionally the noise environment.
Sensitive receptors are identified as schools, libraries, and medical facilities. The City of Cathedral City has adopted their ordinance to address the State requirement outlined by the California Government Code Section 65032, subsection (f) and section 21083.1 of the California Environmental Quality Act (CEQA). Applicable noise ordinance for the City of Cathedral City is in place through Chapter 11.96 of the City Municipal Code.
The Noise Element also describes the noise contours projected for major roadways, and the data is presented in Table V-3.
In addition to the noise standards, the City has outlined goals, policies, and programs to reduce potential noise impacts and are presented below:
Goals, Policies, and Implementation Measures
Policies, goals and implementation program measures from the Noise Element that would mitigate potential impacts on noise include the following.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
12 Exhibit D: Land Use Compatibility Guidelines
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
13 Goal: A noise environment that complements the City’ low density residential character and its various land uses.
Policy 1: Protect noise sensitive land uses, including residential neighborhoods, schools, hospitals, libraries, churches, resorts and community open space, as well as land uses proposed in the vicinity of the railway, Interstate 10, the Mid-Valley Parkway, and Da Vall Driv e from high noise levels generated by existing and future noise sources.
Program 1.A: Develop and maintain an inventory of existing noise sources and areas of incompatibility and establish procedures to reduce the noise levels in these areas, where economically and aesthetically feasible.
Program 1.B: Require building setbacks, the installation of wall and window insulation, soundwalls, earthen berms, and/or other mitigation measures in areas exceeding the City’s noise limit standards for private development projects as they occur.
Program 1.C: Maintain and enforce a Noise Control ordinance that establishes community-wide noise standards and identifies measures designed to resolve noise complaints.
Program 1.D: Use Specific Plans and the develop ment review process to encourage the use of buffers between noise sensitive land uses and incompatible land uses.
Program 1.E: Parking lots, loading zones, and large trash bins shall be located at a sufficient distance from adjacent residential properties to reduce associated noise impacts.
Policy 2: The relationship between land use designations in the Land Use Element and changes in the circulation pattern of the City, as well as individual developments shall be monitored and mitigated.
Program 2.A: The City zoning ordinance and development review standards shall be used to limit land use patterns and project designs to those that are noise compatible.
Program 2.B: Develop guidelines and minimal criteria requirements for noise analyses for future development projects. Studies shall evaluate project impacts and the effectiveness of proposed mitigation measures.
Program 2.C: Periodically review and amend the Land Use map as appropriate to assure reasonable land use/noise level compatibility.
Policy 3: Private sector project proposals shall include measures that assure that noise exposures levels comply with State of California noise insulation standards as defined in Title 25 (California Noise Insulation Standards).
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
14 Policy 4: Maintain a circulat ion map which maintains low levels of traffic within neighborhoods, and assigns truck routes to major roadways only.
Program 4.A: Designate primary truck routes and ensure that they are clearly marked throughout the community. Except for traffic providin g location -specific services and deliveries, construction trucks and delivery trucks shall be limited to East Palm Canyon Drive, Interstate-10, Date Palm Drive, Palm Drive, Varner Road, Edom Hill Road, Dinah Shore Drive, Ramon Road, and Vista Chino.
Program 4.B: Development projects which result in through-traffic in residential neighborhoods shall be discouraged through the development review process.
Policy 5: Maintain an ongoing contact with the Palm Springs Airport to ensure that flight paths and airport improvements do not impact or extend noise contours into the City.
Policy 6: Coordinate with adjoining municipalities to assure noise -compatible land uses across jurisdictional boundaries.
Policy 7: The City shall restrict grading and construction activities that may impact residential neighborhoods to specified days of the week and times of day.
City of Cathedral City – Noise Ordinance
Section 11.96.030 “Prohibited acts” from the noise ordinance outlines the City’s exterior noise limits as it relates to stationary noise sources.
(A) It is unlawful for any person to engage in the following activities:. (6) To produce, suffer or allow to be produced noise or sounds that exceeds the dB(A) levels in the table below. Exterior noise shall be measured at the lot line of the lot where the noise or sounds are emanating. If the measurement location is on the boundary between two different noise zones, the lower noise level standard applicable to the noise zone shall apply. Interior noise shall be measured at least four feet from the wall, floor, or ceiling nearest to the noise source and with all windows, doors and other openings to the exterior closed.
Noises caused by motor vehicles or trains are exempt from these standards.
In the event the ambient noise level exceeds these levels, no person shall produce, suffer or allow to be produced noise or sounds in excess of the ambient noise level.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
15 Table 2: Cathedral City’s Exterior Noise Limits
Zone Time dB(A) Level
Residential – Exterior Noise 7 a.m. – 10 p.m. 65
10 p.m. - 7 a.m. 50
Residential – Interior Noise 7 a.m. – 10 p.m. 50
10 p.m. - 7 a.m. 40
Commercial Industrial – Exterior Noise 7 a.m. – 10 p.m. 85 10 p.m. – 7 a.m. 55
Section 11.96.060(L) of the Municipal Code enlist the exceptions from Chapter 11.96 as follows:
(L) Construction, repair or excavation work performed pursuant to a valid written agreement with the city or any of its political subdivisions which agreement provides for noise mitigation measures;
In addition, Chapter 9.86 of the Municipal Code outlines the performance standards for commercial and industrial zones. This section classifies the performan ce standards in A, B, and C, referring all three to Chapter 11.96 for noise limits.
Also, Chapter 9.96 “Special Provisions Applying to Miscellaneous Problem Uses” outlines the noise attenuation requirements for carwashes on Section 9.96.140.
Vibration Regulations
Chapter 9.86 states vibration standards as follows: All uses shall be so operated as not to generate vibration discernible without instruments by the average person while on or beyond the lot upon which the source is located or within an adjoining enclosed space if more than one establishment occupies a structure. Vibration caused by motor vehicles, trains, and temporary construction or demolition work is exempted from this standard.
Construction Regulations
Chapter 11.96 outlines the permitted hours for construction work in Section 11.96.070 limiting the time for construction work as stated in Subsection B of this Section.
1. 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: No permissible hours
State holidays: No permissible hours
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Regulatory Setting
16 2. 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: No permissible hours
State holidays: No permissible hours
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Study Method and Procedure
17 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. The following criteria are used to select measurement locations and receptors:
• Locations expected to receive the highest noise impacts, such as 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
MD conducted the sound level measurements in accordance to CalTrans technical noise specifications. All measurements 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:
• Microphones for sound level meters were placed 5-feet above the ground for all measurements • Sound level meters were calibrated (Larson Davis CAL 200) before and after each measurement • Following the calibration of equipment, a wind screen was placed over the microphone • Frequency weighting was set on “A” and slow response
• Results of the long-term noise measurements were recorded on field data sheets • During any short-term noise measurements any noise contaminations such as barking dogs, local traffic, lawn mowers, or aircraft fly-overs were noted
• Temperature and sky conditions were observed and documented
5.2 Noise Measurement Locations
Noise monitoring locations were selected based on the distance of the nearest sensitive on-site receptors to the main noise source ( Date Palm Drive). Short-term noise measurements were conducted near the southwestern corners of the project site. Measurements represent ambient levels at the site. Appendix A includes photos, field sheet, and measured noise data. Exhibit E illustrates the location of the measurements.
5.3 Stationary Noise Modeling
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 us er to input specific noise sources, spectral content, sound barriers, building placement, topography, and sensitive receptor locations.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Study Method and Procedure
18 The future worst-case noise level projections were modeled using referenced sound level data for the stationery on-site sources (HVAC and parking). The reference equipment sound level data is provided in Appendix D. Modeling assumes that project operations occur continuously. The SP model (see Appendix D and Exhibit F ) assumes a total of 1 HVAC equipment per residential uni t, and the parking lot area operating simultaneously (worst -case scenario) when in actuality the noise will be intermittent and lower in noise level.
5.3 FHWA Traffic Noise Prediction Model
Traffic noise from vehicular traffic was projected using a computer program that replicates the FHWA Traffic Noise Prediction Model (FHWA-RD-77-108). The FHWA model arrives at the predicted noise level through a series of adjustments to the Reference Energ y Mean Emission Level (REMEL). Roadway volumes and percentages correspond to the project’s traffic impact study as pr ojected by the Trip Generation and VMT scoping agreement for Date Palm Apartments development made by Integrated Engineering Group, and Coachella Valley Association of Governments 2015 Traffic Census Report (Extrapolated to the opening year with a 2% annual growth). The referenced traffic data was applied to the model and is in Appendix B. The following outlines the key adjustments made to the REMEL for the roadway inputs:
• Roadway classification – (e.g. freeway, major arterial, arterial, secondary, collector, etc), • Roadway Active Width – (distance between the center of the outer most travel lanes on each side of the roadway)
• Average Daily Traffic Volumes (ADT), Travel Speeds, Percentages of automobiles, medium trucks and heavy trucks
• Roadway grade and angle of view
• Site Conditions (e.g. soft vs. hard)
• Percentage of total ADT which flows each hour through-out a 24-hour period Table 3 indicates the roadway parameters and vehicle distribution utilized for this study.
Table 3: Roadway Parameters and Vehicle Distribution
Roadway Segment Existing ADT1 Existing Plus Project ADT2 Speed (MPH) Site Conditions Data Palm 30th & Mc Callum 25,409 26,784 45 Hard
Rosemont Ave Date Palm &Sierra 15,000 16,375 25 Hard
Major Arterial Vehicle Distribution (Truck Mix)
Motor-Vehicle Type Daytime %
(7AM to 7 PM)
Evening %
(7 PM to 10 PM)
Night %
(10 PM to 7 AM)
Total % of
Traffic Flow
Automobiles 81.4 10.4 8.2 96.05
Medium Trucks 86.7 5.3 8.0 2.65
Heavy Trucks 89.2 3.4 7.3 1.30
Notes:
1 Per CVAG 2015 Traffic Census Report and VMT scoping agreement, Integrated Engineering Group. 2 Trip Generation per Integrated Engineering Group report September 2023.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Study Method and Procedure
19 The following outlines key adjustments to the REMEL for project site parameter inputs:
• Vertical and horizontal distances (Sensitive receptor distance from noise source) • Noise barrier vertical and horizontal distances (Noise barrier distance from sound source and receptor).
• Traffic noise source spectra
• Topography
MD projected the traffic noise levels to the on -site receptors. The project noise calculation worksheet outputs are located in Appendix B.
5.4 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. Construction noise is expected to be loudest during the grading, concrete and building phases of construction. The construction noise calculation output worksheet is located in Appendix C. The following assumptions relevant to short-term construction noise impacts were used:
• It is estimated that construction will occur over a 1-year time period. Construction noise is expected to be the loudest during the grading, concrete, and building phases.
Exhibit E
Measurement Locations
20 Study Method
and Procedure
1 = Short
-
Term
Monitoring Location
1 SITE
Date Palm Apartments
-
Noise
Noise Impact Study
City of Cathedral City, CA
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Existing Noise Environment
21 6.0 Existing Noise Environment
Onee (1) short-term (1-hour) ambient noise measurement w ere conducted at or near the project site.
The noise measurements were taken to determine the existing baseline noise conditions.
6.1 Short-Term Noise Measurement Results
The results of the short-term noise data are presented in Table 4.
Table 4: Short-Term Noise Measurement Data (dBA)1
Date Location 30-minutes dB(A)
Start Stop LEQ LMAX LMIN
9/26/2023 ST-1 3:01 PM 4:01 PM 67 79 39
Notes:
1. Short-term noise monitoring location (ST-1) is illustrated in Exhibit E.
Noise data indicate the equivalent ambient level measured 67 dBA Leq(h) at the southwest corner of the project site. Maximum levels reach up to 79 dBA at the due to traffic along Date Palm Drive . The minumum noise level measured 39 dBA. The measured ambient level at or near the project site shows that the primary noise source is traffic along Date Palm Drive . Additional field notes and photographs are provided in Appendix A.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Future Noise Environment Impacts
22 7.0 Future Noise Environment Impacts
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 roadways and project stationery noise sources.
7.1 Future Exterior Noise
The following outlines the exterior noise levels associated with the proposed project.
7.1.1 Noise Impacts to Off-Site Receptors Due to Stationary Sources Sensitive receptors that may be affected by project operational noise include existing residential to the east and south . The worst -case stationary noise was modeled using SoundPLAN acoustical modeling software. Worst-case assumes project’s noise sources are always operational when in reality the noise will be intermittent and cycle on/off depending on customer usage.
A total of three (3) 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 calibration point, property line, or a sensitive receptor such as an outdoor sensitive area (courtyard, patio, backyard, etc).
This study compares the Project’s operational noise levels to two (2) different noise assessment scenarios: 1) Project Only operational noise level projections, 2) Project plus ambient noise level projections.
Project Operational Noise Levels
Exhibit F shows the “project only” operational noise levels at the property lines and/or sensitive receptor area. Operational noise levels at the adjacent uses are anticipated to range between 4 2 dBA to 43 dBA Leq (depending on the location).
The “project only” noise projections to the property lines are below the City’s 65 dBA daytime residential limit, and 5 0 dBA nighttime limit as outlined within the City’s noise ordinance (see Section 4.3 of this report).
Project Plus Ambient Operational Noise Levels
Table 5 demonstrates the project plus the ambient noise levels. Project plus ambient noise level projections are anticipated to range between 56 to 58 dBA Leq at nearby receptors (R1 – R3). The “project plus ambient” noise projections to the adjacent uses are not increasing the ambient noise level.
Exhibit F
Operational Noise Levels Contours
23 Future Noise Environment
Impacts
Date Palm Dr
Date Palm Apartments
-
Noise
Noise Impact Study
City of Cathedral City, CA
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Future Noise Environment Impacts
24 Table 5: Worst-case Predicted Operational Noise Level1 Receptor1 Floor
Existing
Ambient
Noise Level
(dBA, Leq)2
Project
Noise
Level
(dBA,
Leq)3
Total
Combined
Noise Level
(dBA, Leq)
Daytime (7AM - 10PM)
Stationary Noise Limit
Exterior (dBA, Leq)4
Exceeds
Exterior
Standard
Change in Noise
Level as Result
of Project
1 1 56 41 56 65 No 0.0
2 1 58 42 58 65 No 0.0
3 1 56 41 56 65 No 0.0
Notes:
1. Receptor 1 - 3 represents residential uses.
2. The ambient noise condition was estimated using the FHWA TNM based on receiver distance to Date Palm Dr and calibrated to the noise measurement performed at the project site. See Appendix A for noise measurement and Appendix B for traffic noise calculation sheets.
3. See Exhibit F for the operational noise level projections at said receptors.
4. Per Section 11.96.030 from the City's Municipal Code.
As shown in Table 5, the project does not exceed the City’s exterior noise limit. The project was compared to the existing baseline condition (estimated at receiver location based on the measurement performed) to the operational plus ambient noise condition to show the change in noise level. Table 5 provides the anticipated change in noise level as a result of the proposed pro ject. The existing noise levels are anticipated to have a negligible increase at the receptor locations analyzed.
When comparing the change in noise level to acoustic characteristics outlined within Table 1 (Section
2.5 of this report), the noise level increase would be “Not Perceptible” at the receptors.
7.1.2 Noise Impacts to Off-Site Receptors Due to Project Generated Traffic A worst -case project generated traffic noise level was modeled utilizing the FHWA Traffic Noise Prediction Model - FHWA-RD-77-108. Traffic noise levels were calculated at two locations. The first one represents the residences close to the south edge of the project site, and is approximately 400 feet from the centerline of Date Palm Drive . T he second location represents the residences to the east of the project site and is 670 feet from the centerline of Date Palm Drive. Additionally at the first location the impact is analyzed from the Rosemont Avenue opening. The trip generation for the multi-family residence project is 1,375, distributed 100% on Date Palm Drive for conservative purposes. The modeling is theoretical and does not take into account any existing barriers, structures, and/or topographical features that may further reduce noise levels. Therefore, the levels are shown for comparative purposes only to show the difference in with and without project conditions . In addition, the noise contours for 60, 65 and 70 dBA CNEL were calculated. The potential off -site noise impacts caused by an increase of traffic from operation of the proposed project on the nearby roadways were calculated for the following scenarios:
Opening Year (without Project): This scenario refers to opening year 2025 traffic noise conditions.
Opening Year (Plus Project): This scenario refers to opening year + project traffic noise conditions.
Table 6 compares the without and with project scenario and shows the change in traffic no ise levels as a result of the proposed project. It takes a ch ange of 3 dB or more to hear a perceptible difference. As demonstrated in Table 6, the project is anticipated to generate a small change in the noise CNEL level.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Future Noise Environment Impacts
25 The change in noise level is les s than significant as a 0.4 dBA noise increase is projected. No further mitigation is required.
Table 6: Existing Scenario - Noise Levels Along Roadways (dBA CNEL) Opening Without Project Exterior Noise Levels
CNEL
(dBA)
Distance to Contour (Ft)
Roadway Segment 70 dBA
CNEL
65 dBA
CNEL
60 dBA
CNEL
55 dBA
CNEL
Date Palm Dr 30th Ave to Mccallum Way (@400’) 58.7 79 249 788 2492 Date Palm Dr 30th Ave to Mccallum Way (@670’) 56.4 78 247 783 2475 Rosemont Ave Date Palm to Sierra (@50’) 61.0 13 42 132 417
Opening With Project Exterior Noise Levels
CNEL
(dBA)
Distance to Contour (Ft)
Roadway Segment 70 dBA
CNEL
65 dBA
CNEL
60 dBA
CNEL
55 dBA
CNEL
Date Palm Dr 30th Ave to Mccallum Way (@400’) 58.9 83 263 831 2626 Date Palm Dr 30th Ave to Mccallum Way (@670’) 56.7 82 261 825 2608 Rosemont Ave Date Palm to Sierra (@50’) 61.4 14 46 144 456
Change in Existing Noise Levels as a Result of Project
CNEL at locations dBA1,2
Roadway Segment
Existing
Without
Project
Existing
With
Project
Change
in
Noise
Level
Potential
Significant
Impact
Date Palm Dr 30th Ave to Mccallum Way (@400’) 58.7 58.9 0.2 No Date Palm Dr 30th Ave to Mccallum Way (@670’) 56.4 56.7 0.3 No Rosemont Ave Date Palm to Sierra (@50’) 61.0 61.4 0.4 No Notes:
1 Exterior noise levels calculated at 5 feet above ground level. 2 Noise levels calculated from centerline of subject roadway.
7.1.3 Noise Impacts to On-Site Receptors Due to Traffic Traffic noise from the local roadway network was evaluated and compared to the City’s noise compatibility matrix. Per the City’s Land Use Compatibility (Table V-2 from Geneal Plan / Noise Element), multi-family residential is conditionally acceptable up to 70 dBA CNEL. Opening Plus Project traffic noise projections show that the traffic noise contour for 70 dBA CNEL will reach up to 88 feet from the Date Palm centerline. The proposed residential structures are located as close as 85 feet away from Date Palm Drive centerline and fall within the 70 to 65 dBA CNEL contour of the Roadway and are located within the conditionally acceptable region for multiple-family residential (per land use compatibility matrix).
Exhibit G
Traffic Noise Levels Contours CNEL
26 Future Noise Environment Impacts
Date Palm Dr
Date Palm Apartments
-
Noise
Noise Impact Study
City of Cathedral City, CA
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Future Noise Environment Impacts
27 7.1.4 Interior Noise Levels
The future interior noise level was calculated for the sensitive receptor locations using a typical “windows open” and “windows closed” condition. A “windows open” condition assumes 12 dBA of noise attenuation from the exterior noise level. A “windows closed” condition” assumes 20 dBA of noise attenuation from the exterior noise level. Table 7 indicates the first and second-floor interior noise levels for the project site.
Table 7: Future Interior Noise Levels (dBA CNEL)
Location Roadway
Noise Source
Exterior Facade
Study Location
Noise
Level at
Building
Facade1
Interior Noise
Reduction
Required to
Meet Interior
Noise Standard
of 45 dBA CNEL
Interior Noise Level w/
Typical Residential
Windows (STC≥ 30)
STC Rating
for Windows
Facing
Subject
Roadway4
Window
Open2
Windows
Closed3
1st Row Units
Along Western
Property Line
Date Palm
Dr
1st Floor 70 25 58 45 30
2nd Floor 70 25 58 45 30
Notes:
1. Noise level from Section 7.1 and from worksheets Appendix B.
2. A minimum of 12 dBA noise reduction is assumed with a "windows open" condition.
3. A minimum of 20 dBA noise reduction is assumed with a "windows closed" condition.
4. Indicates the required STC rating to meet the interior noise standard.
As shown in Table 7, the interior noise level will be 58 dBA CNEL with the windows open and 45 dBA CNEL with the windows closed.
To meet the interior 45 dBA CNEL standard a “windows closed” condition is required. The windows and sliding glass doors directly facing Date Palm Drive will require a minimum STC rating of 30 for the 1 st floor and 2nd floors. A “windows closed” condition simply means that in order to achieve a 45 dBA CNEL interior noise level, the windows must be closed and does not mean the windows must be fixed.
The present project is designed to meet the Title 24 CBC ; therefore, the construction assembly and techniques shall suffice to meet the interior noise isolation requirements.
7.2 Summary of Recommendations
The following recommendations are provided:
COA-1: Consistent with the Land Use Compatibility Matrix and prior to issuance of grading permit, a detailed sound attenuation study is necessary to verify the project will achieve a minimum 25 dBA noise reduction.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Construction Noise Impact
28 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 l evels associated with the construction will vary with the different phases of construction.
8.1 Construction Noise
The Environmental Protection Agency (EPA) has compiled data regarding the noise -generated characteristics of typical construction activities. The data is presented in Table 8.
Table 8: 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 noise is considered a short-term impact and would be considered significant if construction activities are taken outside the allowable times as described in the City’s Municipal Code ( Section
11.96.070). Construction is anticipated to occur during the permissible hours according to 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. Furthermore, noise reduction measures are pr ovided to further reduce construction noise. The impact is considered not significant however construction noise level projections are provided.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Construction Noise Impact
29 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 will be loudest during grading phase. A likely worst -case construction noise scenario during grading assumes the use of a grader, a dozer, and two (2) excavators, two (2) ba ckhoes and a scraper operating at 320 feet from the nearest sensitive receptor (residences to the east).
Assuming a usage factor of 40 percent for each piece of equipment, unmitigated noise levels at 290 feet have the potential to reach 69 dBA Leq and 73 dBA Lmax at the nearest sensitive receptors during grading.
Noise levels for the other construction phases would be lower and range between 62 to 65 dBA.
8.2 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 bull dozer. A large bull dozer has a vibration impact of 0.089 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 throu gh 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)
The thresholds from the Caltrans Transportation and Construction Induced Vibration Guidance Manual in Table 9 (below) provides general thresholds and guidelines as to the vibration damage potential from vibratory impacts.
Table 9: 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.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA Construction Noise Impact
30 Table 10 gives approximate vibration levels for particular construction activities. This data provides a reasonable estimate for a wide range of soil conditions.
Table 10: 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.
At a distance of 320 feet, a large bulldozer would yield a worst-case 0.005 PPV (in/sec) which below the threshold of perception and any risk of damage. The impact is less than significant, and no mitigation is required.
8.3 Construction Noise Reduction Measures
Construction operations must follow the City’s General Plan and the Noise Ordinance, which states that construction, repair or excavation work performed must occur within the permissible hours. To further ensure that construction activities do not disrupt the adjacent land uses, the following measures should be taken:
1. Construction should occur during the permissible hours as defined in Section 11.96.070.
2. During construction, the contactor shall ensure all construction equipment is equipped with appropriate noise attenuating devices.
3. The contractor should locate equipment staging areas that will create the greatest distance between construction-related noise/vibration sources and sensitive receptors nearest the project site during all project construction.
4. Idling equipment should be turned off when not in use.
5. Equipment shall be maintained so that vehicles and their loads are secure d from rattling and banging.
Date Palm Apartments - Noise
Noise Impact Study
City of Cathedral City, CA References
31 9.0 References
State of California General Plan Guidelines: 1998. Governor’s Office of Planning and Research City of Cathedral City: Municipal Code Chapter 11.96
City of Cathedral City: General Plan Chapter V - Environmental Hazards - Noise Element.
Federal Transit Administration. Transit Noise and Vibration Impact Assessment Manual. September 2018.
Scoping Agreement for Date Palm Apartments Project , Cathedral City, Integrated Engineering Group, September 22, 2023.
Appendix A:
Field Measurement Data
1-Hour Noise Measurement Datasheet
Project Name: 170 Units Date Palm Dr Noise
Project: #/Name: 0805-2023-007
Site Address/Loca�on: Date Palm Drive & Rosemount
Date: 09/26/2023
Field Tech/Engineer:
Sound Meter:XL2, NTISN: A2A-08562-E0
Se�ngs: A-weighted, slow, 1-sec, 1-hour interval
Site Id: NM1
Site Observa�ons:
1 Map data ©2023 Imagery ©2023 Airbus, CNES / Airbus, Maxar Technologies, USDA/FPAC/GEO Report a map error
Source: Global Forecast System (GFS) weather forcast model 1-Hour Noise Measurement Datasheet - Cont.
Project Name: 170 Units Date Palm Dr Noise
Site Address/Loca�on: Date Palm Drive & Rosemount
Site Id: NM1
Figure 1: NM1
Figure 2: NM1
Figure 3: NM1
Table 1: Baseline Noise Measurement Summary
Loca�on Start Stop Leq Lmax Lmin L2 L8 L25 L50 L90
NM1 3:01 PM 4:01 PM 66.8 79.3 39.1 74.1 71.8 67.8 63.5 51.5 1-Hour Noise Measurement Datasheet - Cont.
Project Name: 170 Units Date Palm Dr Noise
Site Address/Loca�on: Date Palm Drive & Rosemount
Site Id: NM1
NM1 Ambient Noise Level (1-sec)
Site Topo: Flat desert condi�ons next to h
Meteorological Cond.: 92F winds 0-1 MPH
Ground Type: Sandy soil and clay
Noise Source(s) w/ Distance:
Road and residen�al noise
NM1 dBA, Leq
15:01:15
15:02:14
15:03:13
15:04:12
15:05:11
15:06:10
15:07:09
15:08:08
15:09:07
15:10:06
15:11:05
15:12:04
15:13:03
15:14:02
15:15:01
15:16:00
15:16:59
15:17:58
15:18:57
15:19:56
15:20:55
15:21:54
15:22:53
15:23:52
15:24:51
15:25:50
15:26:49
15:27:48
15:28:47
15:29:46
15:30:45
15:31:44
15:32:43
15:33:42
15:34:41
15:35:40
15:36:39
15:37:38
15:38:37
15:39:36
15:40:35
15:41:34
15:42:33
15:43:32
15:44:31
15:45:30
15:46:29
15:47:28
15:48:27
15:49:26
15:50:25
15:51:24
15:52:23
15:53:22
15:54:21
15:55:20
15:56:19
15:57:18
15:58:17
15:59:16
16:00:15
16:01:14
40 50
60 70
80 Time
dBA
Appendix B:
Traffic FHWA Worksheets
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
400 ft from Date Palm Dr centerline
ENGINEER:
F. Irarrazabal
ADT =
25,409
RECEIVER DISTANCE =
400
SPEED =
45 DIST C/L TO WALL =
70 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
64 WALL DISTANCE FROM RECEIVER =
330
ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
2,541
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 392.39
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 392.29
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 398.73
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
62.4 60.7
57.8 52.0
61.0 61.5
MEDIUM TRUCKS
55.1 53.6
47.5 44.5
53.6 53.9
HEAVY TRUCKS
56.4 55.1
47.0 45.5
54.8 55.0
NOISE LEVELS (dBA)
63.9 62.4
58.5 53.4
62.5 62.9
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
56.4 54.7
51.8 46.0
55.0 55.5
MEDIUM TRUCKS
49.9 48.4
42.3 39.3
48.4 48.7
HEAVY TRUCKS
56.4 55.1
47.0 45.5
54.8 55.0
NOISE LEVELS (dBA)
59.7 58.1
54.2 49.2
58.3 58.7
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
79 249
788
2492
LDN
71 225
712
2251
NOISE INPUT DATA Opening Year 2025
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
VEHICLE MIX DATA
MISC. VEHICLE INFO
0.814
- -
GRADE ADJUSTMENT
DAY
NOISE CONTOUR (FT)
- -
0.00 0.867
0.892
NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
400 ft from Date Palm Dr centerline
ENGINEER:
F. Irarrazabal
ADT =
26,784
RECEIVER DISTANCE =
400
SPEED =
45 DIST C/L TO WALL =
70 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
64 WALL DISTANCE FROM RECEIVER =
330
ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
2,678
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 392.39
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 392.29
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 398.73
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
62.6 60.9
58.0 52.2
61.2 61.7
MEDIUM TRUCKS
55.3 53.9
47.8 44.8
53.8 54.1
HEAVY TRUCKS
56.6 55.3
47.2 45.7
55.0 55.2
NOISE LEVELS (dBA)
64.2 62.6
58.7 53.7
62.7 63.2
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
56.6 54.9
52.0 46.2
55.2 55.7
MEDIUM TRUCKS
50.1 48.7
42.6 39.6
48.6 48.9
HEAVY TRUCKS
56.6 55.3
47.2 45.7
55.0 55.2
NOISE LEVELS (dBA)
59.9 58.4
54.5 49.4
58.5 58.9
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
83 263
831
2626
LDN
75 237
750
2373
NOISE CONTOUR (FT)
DAY
GRADE ADJUSTMENT
0.814
- -
0.867
- -
0.892
0.00 NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
VEHICLE MIX DATA
MISC. VEHICLE INFO
NOISE INPUT DATA Opening Year 2025 + Project
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
670 ft from Date Palm Dr centerline
ENGINEER:
F. Irarrazabal
ADT =
25,409
RECEIVER DISTANCE =
670
SPEED =
45 DIST C/L TO WALL =
70 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
64 WALL DISTANCE FROM RECEIVER =
600
ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
2,541
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 662.39
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 662.29
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 669.24
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
60.1 58.4
55.5 49.7
58.7 59.2
MEDIUM TRUCKS
52.8 51.4
45.2 42.3
51.3 51.6
HEAVY TRUCKS
54.2 52.9
44.7 43.2
52.5 52.7
NOISE LEVELS (dBA)
61.7 60.1
56.2 51.2
60.2 60.7
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
54.1 52.4
49.5 43.7
52.7 53.2
MEDIUM TRUCKS
47.6 46.2
40.0 37.1
46.1 46.4
HEAVY TRUCKS
54.2 52.9
44.7 43.2
52.5 52.7
NOISE LEVELS (dBA)
57.5 55.9
52.0 46.9
56.0 56.4
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
78 247
783
2475
LDN
71 224
707
2236
NOISE CONTOUR (FT)
DAY
GRADE ADJUSTMENT
0.814
- -
0.867
- -
0.892
0.00 NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
VEHICLE MIX DATA
MISC. VEHICLE INFO
NOISE INPUT DATA Opening Year 2025
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
670 ft from Date Palm Dr centerline
ENGINEER:
F. Irarrazabal
ADT =
26,784
RECEIVER DISTANCE =
670
SPEED =
45 DIST C/L TO WALL =
70 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
64 WALL DISTANCE FROM RECEIVER =
600
ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
2,678
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 662.39
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 662.29
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 669.24
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
60.3 58.6
55.7 49.9
58.9 59.4
MEDIUM TRUCKS
53.0 51.6
45.5 42.5
51.6 51.8
HEAVY TRUCKS
54.4 53.1
44.9 43.5
52.8 53.0
NOISE LEVELS (dBA)
61.9 60.3
56.4 51.4
60.5 60.9
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
54.3 52.6
49.7 43.9
52.9 53.4
MEDIUM TRUCKS
47.8 46.4
40.3 37.3
46.4 46.6
HEAVY TRUCKS
54.4 53.1
44.9 43.5
52.8 53.0
NOISE LEVELS (dBA)
57.7 56.1
52.2 47.2
56.2 56.7
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
82 261
825
2608
LDN
75 236
745
2357
NOISE CONTOUR (FT)
DAY
GRADE ADJUSTMENT
0.814
- -
0.867
- -
0.892
0.00 NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
VEHICLE MIX DATA
MISC. VEHICLE INFO
NOISE INPUT DATA Opening Year 2025 + Project
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
85 ft from Date Palm Dr centerline Project First Row
ENGINEER:
F. Irarrazabal
ADT =
26,784
RECEIVER DISTANCE =
85 SPEED =
45 DIST C/L TO WALL =
63 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
64 WALL DISTANCE FROM RECEIVER =
22 ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
2,678
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 76.44
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 76.33
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 76.33
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
69.7 68.0
65.1 59.3
68.3 68.8
MEDIUM TRUCKS
62.4 61.0
54.9 51.9
60.9 61.2
HEAVY TRUCKS
63.8 62.5
54.4 52.9
62.2 62.4
NOISE LEVELS (dBA)
71.3 69.7
65.8 60.8
69.8 70.3
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
63.8 62.1
59.2 53.4
62.4 62.9
MEDIUM TRUCKS
57.0 55.6
49.5 46.5
55.5 55.8
HEAVY TRUCKS
58.9 57.6
49.4 47.9
57.2 57.4
NOISE LEVELS (dBA)
65.6 64.0
60.1 55.1
64.2 64.6
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
91 287
909
2874
LDN
82 260
821
2597
NOISE CONTOUR (FT)
DAY
GRADE ADJUSTMENT
0.814
- -
0.867
- -
0.892
0.00 NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
VEHICLE MIX DATA
MISC. VEHICLE INFO
NOISE INPUT DATA Opening Year 2025 + Project
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
50 ft from Rosemont Ave centerline Residence to the south of project site ENGINEER:
F. Irarrazabal
ADT =
15,000
RECEIVER DISTANCE =
50 SPEED =
25 DIST C/L TO WALL =
25 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
24 WALL DISTANCE FROM RECEIVER =
25 ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
1,500
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 47.31
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 47.04
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 48.63
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
61.9 60.2
57.3 51.5
60.5 61.0
MEDIUM TRUCKS
58.0 56.6
50.5 47.5
56.5 56.8
HEAVY TRUCKS
60.9 59.6
51.5 50.0
59.3 59.5
NOISE LEVELS (dBA)
65.3 63.8
59.0 54.7
63.8 64.2
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
54.8 53.1
50.2 44.4
53.4 53.9
MEDIUM TRUCKS
52.2 50.8
44.7 41.7
50.7 51.0
HEAVY TRUCKS
60.9 59.6
51.5 50.0
59.3 59.5
NOISE LEVELS (dBA)
62.1 60.6
55.8 51.5
60.6 61.0
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
13 42
132
417
LDN
12 38
121
384
VEHICLE MIX DATA
MISC. VEHICLE INFO
NOISE INPUT DATA Opening Year 2025
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
NOISE CONTOUR (FT)
DAY
GRADE ADJUSTMENT
0.814
- -
0.867
- -
0.892
0.00 NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL
PROJECT:
Date Palm Apartments
JOB #:
0805-23-07
ROADWAY:
Date Palm Drive, between 30th Ave and Mccallum Way
DATE:
18-Oct-23
LOCATION:
50 ft from Rosemont Ave centerline Residence to the south of project site ENGINEER:
F. Irarrazabal
ADT =
16,375
RECEIVER DISTANCE =
50 SPEED =
25 DIST C/L TO WALL =
25 PK HR % =
10 RECEIVER HEIGHT =
5.0 NEAR LANE/FAR LANE DIST =
24 WALL DISTANCE FROM RECEIVER =
25 ROAD ELEVATION =
0.0 PAD ELEVATION =
0.0 GRADE =
0.0 %
ROADWAY VIEW:
LF ANGLE=
-90
PK HR VOL =
1,638
RT ANGLE=
90 DF ANGLE=
180
AUTOMOBILES =
10 HTH WALL=
6.0 MEDIUM TRUCKS =
10 (10 = HARD SITE, 15 = SOFT SITE)
AMBIENT=
0.0 HEAVY TRUCKS =
10 BARRIER =
0 (0 = WALL, 1 = BERM)
VEHICLE TYPE
EVENING
NIGHT
DAILY
VEHICLE TYPE
HEIGHT
SLE DISTANCE
AUTOMOBILES
0.104
0.082
0.9605
AUTOMOBILES
2.0 47.31
MEDIUM TRUCKS
0.053
0.080
0.0265
MEDIUM TRUCKS
4.0 47.04
HEAVY TRUCKS
0.034
0.073
0.0130
HEAVY TRUCKS
8.0 48.63
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
62.3 60.6
57.7 51.9
60.9 61.4
MEDIUM TRUCKS
58.4 57.0
50.8 47.9
56.9 57.2
HEAVY TRUCKS
61.3 60.0
51.8 50.4
59.7 59.9
NOISE LEVELS (dBA)
65.7 64.2
59.4 55.1
64.2 64.6
VEHICLE TYPE
PK HR LEQ
DAY LEQ
EVEN LEQ
NIGHT LEQ
LDN
CNEL
AUTOMOBILES
55.2 53.5
50.6 44.8
53.8 54.3
MEDIUM TRUCKS
52.6 51.2
45.0 42.1
51.1 51.4
HEAVY TRUCKS
61.3 60.0
51.8 50.4
59.7 59.9
NOISE LEVELS (dBA)
62.5 61.0
56.1 51.9
61.0 61.4
NOISE LEVELS
70 dBA
65 dBA
60 dBA
55 dBA
CNEL
14 46
144
456
LDN
13 42
132
419
NOISE CONTOUR (FT)
DAY
GRADE ADJUSTMENT
0.814
- -
0.867
- -
0.892
0.00 NOISE OUTPUT DATA
NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING)
NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING)
VEHICLE MIX DATA
MISC. VEHICLE INFO
NOISE INPUT DATA Opening Year 2025 + Project
ROADWAY CONDITIONS
RECEIVER INPUT DATA
SITE CONDITIONS
WALL INFORMATION
Appendix C:
Construction Noise Modeling Output
Construction Noise Levels at Senstive Receptors by Phase Activity
Leq at 320 FT (East)
Lmax at 320 FT (East)
Site Preparation
62 66
Grading
69 73
Building Construction
65 69
Architectural Coating
62 66
Equipment Summary
Reference (dBA) 50 ft
Lmax
Rock Drills
96 Jack Hammers
82 Pneumatic Tools
85 Pavers
80 Dozers
85 Scrapers
87 Haul Trucks
88 Cranes
82 Portable Generators
80 Rollers
80 Tractors
80 Front-End Loaders
86 Hydraulic Excavators
86 Graders
86 Air Compressors
86 Trucks
86 Noise Level Calculation Prior to Implementation of Noise Attenuation Requirements Lmax
Leq
1 Dozer
85 1
40 320
0.5 0
64.8 60.9
1220703.13
2 Tractor/Loader/Backhoe
80 1
40 320
0.5 0
59.8 55.9
386020.222
Source: MD Acoustics, LLC - Sept. 2021.
Lmax*
66 Leq
62 1- Percentage of time that a piece of equipment is operating at full power.
Lw
96 Lw
94 dBA – A-weighted Decibels
Lmax- Maximum Level
Leq- Equivalent Level
Feet
Meters
Ground Effect
No
Shielding
Leq dBA
1 dBA
Shielding
Leq dBA
2 dBA
Shielding
Leq dBA
3 dBA
Shielding
Leq dBA
4 dBA
Shielding
Leq dBA
5 dBA
Shielding
Leq dBA
6 dBA
Shielding
Leq dBA
7 dBA
Shielding
Leq dBA
8 dBA
Shielding
Leq dBA
9 dBA
Shielding
Leq dBA
10 dBA
Shielding
Leq dBA
11 dBA
Shielding
LeqdBA
12 dBA
Shielding
Leq dBA
13 dBA
Shielding
Leq dBA
14 dBA
Shielding
Leq dBA
15 dBA
Shielding
Leq dBA
50 15.2
0.5 62
61 60
59 58
57 56
55 54
53 52
51 50
49 48
47 60
18.3 0.5
60 59
58 57
56 55
54 53
52 51
50 49
48 47
46 45
70 21.3
0.5 58
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 80
24.4 0.5
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 42
90 27.4
0.5 56
55 54
53 52
51 50
49 48
47 46
45 44
43 42
41 100
30.5 0.5
55 54
53 52
51 50
49 48
47 46
45 44
43 42
41 40
110
33.5 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
120
36.6 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
130
39.6 0.5
52 51
50 49
48 47
46 45
44 43
42 41
40 39
38 37
140
42.7 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
150
45.7 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
160
48.8 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
170
51.8 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
180
54.9 0.5
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 33
190
57.9 0.5
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 33
200
61.0 0.5
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 32
210
64.0 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
220
67.1 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
230
70.1 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
240
73.1 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
250
76.2 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
260
79.2 0.5
44 43
42 41
40 39
38 37
36 35
34 33
32 31
30 29
270
82.3 0.5
44 43
42 41
40 39
38 37
36 35
34 33
32 31
30 29
280
85.3 0.5
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 28
290
88.4 0.5
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 28
300
91.4 0.5
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 28
310
94.5 0.5
42 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
320
97.5 0.5
42 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
330
100.6
0.5 42
41 40
39 38
37 36
35 34
33 32
31 30
29 28
27 340
103.6
0.5 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
26 350
106.7
0.5 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
26 360
109.7
0.5 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
26 370
112.8
0.5 40
39 38
37 36
35 34
33 32
31 30
29 28
27 26
25 No.
Equipment Description
Reference (dBA) 50 ft Lmax
Quantity
Usage
Factor
1 Distance to
Receptor
(ft)
Ground
Effect
Shielding
(dBA)
Calculated (dBA)
Energy
Site Preparation
Noise Level Calculation Prior to Implementation of Noise Attenuation Requirements Lmax
Leq
1 Grader
86 1
40 320
0.5 0
65.8 61.9
1536774.18
2 Dozer
85 1
40 320
0.5 0
64.8 60.9
1220703.13
3 Tractor/Backhoe
80 2
40 320
0.5 0
62.9 58.9
772040.444
4 Scrapers
87 1
40 320
0.5 0
66.8 62.9
1934684.07
5 Excavators
86 2
40 320
0.5 0
68.9 64.9
3073548.37
Source: MD Acoustics, LLC - Sept. 2021.
Lmax*
73 Leq
69 1- Percentage of time that a piece of equipment is operating at full power.
Lw
102
Lw
101
dBA – A-weighted Decibels
Lmax- Maximum Level
Leq- Equivalent Level
Feet
Meters
Ground Effect
No
Shielding
Leq dBA
1 dBA
Shielding
Leq dBA
2 dBA
Shielding
Leq dBA
3 dBA
Shielding
Leq dBA
4 dBA
Shielding
Leq dBA
5 dBA
Shielding
Leq dBA
6 dBA
Shielding
Leq dBA
7 dBA
Shielding
Leq dBA
8 dBA
Shielding
Leq dBA
9 dBA
Shielding
Leq dBA
10 dBA
Shielding
Leq dBA
11 dBA
Shielding
LeqdBA
12 dBA
Shielding
Leq dBA
13 dBA
Shielding
Leq dBA
14 dBA
Shielding
Leq dBA
15 dBA
Shielding
Leq dBA
50 15.2
0.5 69
68 67
66 65
64 63
62 61
60 59
58 57
56 55
54 60
18.3 0.5
67 66
65 64
63 62
61 60
59 58
57 56
55 54
53 52
70 21.3
0.5 66
65 64
63 62
61 60
59 58
57 56
55 54
53 52
51 80
24.4 0.5
64 63
62 61
60 59
58 57
56 55
54 53
52 51
50 49
90 27.4
0.5 63
62 61
60 59
58 57
56 55
54 53
52 51
50 49
48 100
30.5 0.5
62 61
60 59
58 57
56 55
54 53
52 51
50 49
48 47
110
33.5 0.5
61 60
59 58
57 56
55 54
53 52
51 50
49 48
47 46
120
36.6 0.5
60 59
58 57
56 55
54 53
52 51
50 49
48 47
46 45
130
39.6 0.5
59 58
57 56
55 54
53 52
51 50
49 48
47 46
45 44
140
42.7 0.5
58 57
56 55
54 53
52 51
50 49
48 47
46 45
44 43
150
45.7 0.5
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 42
160
48.8 0.5
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 42
170
51.8 0.5
56 55
54 53
52 51
50 49
48 47
46 45
44 43
42 41
180
54.9 0.5
55 54
53 52
51 50
49 48
47 46
45 44
43 42
41 40
190
57.9 0.5
55 54
53 52
51 50
49 48
47 46
45 44
43 42
41 40
200
61.0 0.5
54 53
52 51
50 49
48 47
46 45
44 43
42 41
40 39
210
64.0 0.5
54 53
52 51
50 49
48 47
46 45
44 43
42 41
40 39
220
67.1 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
230
70.1 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
240
73.1 0.5
52 51
50 49
48 47
46 45
44 43
42 41
40 39
38 37
250
76.2 0.5
52 51
50 49
48 47
46 45
44 43
42 41
40 39
38 37
260
79.2 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
270
82.3 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
280
85.3 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
290
88.4 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
300
91.4 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
310
94.5 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
320
97.5 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
330
100.6
0.5 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 340
103.6
0.5 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 350
106.7
0.5 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 360
109.7
0.5 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 370
112.8
0.5 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 Shielding
(dBA)
Calculated (dBA)
Energy
No.
Equipment Description
Reference (dBA) 50 ft Lmax
Ground
Effect
Quantity
Usage
Factor
1 Distance to
Receptor
(ft)
Grading
Noise Level Calculation Prior to Implementation of Noise Attenuation Requirements Lmax
Leq
1 Forklift/Tractor
80 3
40 320
0.5 0
64.6 60.6
1158060.67
2 Tractor/Backhoe
80 3
40 320
0.5 0
64.6 60.6
1158060.67
3 Cranes
82 1
40 320
0.5 0
61.8 57.9
611800.822
4 Generator
80 1
40 320
0.5 0
59.8 55.9
386020.222
Source: MD Acoustics, LLC - Sept. 2021.
Lmax*
69 Leq
65 1- Percentage of time that a piece of equipment is operating at full power.
Lw
101
Lw
97 dBA – A-weighted Decibels
Lmax- Maximum Level
Leq- Equivalent Level
Feet
Meters
Ground Effect
No
Shielding
Leq dBA
1 dBA
Shielding
Leq dBA
2 dBA
Shielding
Leq dBA
3 dBA
Shielding
Leq dBA
4 dBA
Shielding
Leq dBA
5 dBA
Shielding
Leq dBA
6 dBA
Shielding
Leq dBA
7 dBA
Shielding
Leq dBA
8 dBA
Shielding
Leq dBA
9 dBA
Shielding
Leq dBA
10 dBA
Shielding
Leq dBA
11 dBA
Shielding
LeqdBA
12 dBA
Shielding
Leq dBA
13 dBA
Shielding
Leq dBA
14 dBA
Shielding
Leq dBA
15 dBA
Shielding
Leq dBA
50 15.2
0.5 65
64 63
62 61
60 59
58 57
56 55
54 53
52 51
50 60
18.3 0.5
63 62
61 60
59 58
57 56
55 54
53 52
51 50
49 48
70 21.3
0.5 62
61 60
59 58
57 56
55 54
53 52
51 50
49 48
47 80
24.4 0.5
60 59
58 57
56 55
54 53
52 51
50 49
48 47
46 45
90 27.4
0.5 59
58 57
56 55
54 53
52 51
50 49
48 47
46 45
44 100
30.5 0.5
58 57
56 55
54 53
52 51
50 49
48 47
46 45
44 43
110
33.5 0.5
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 42
120
36.6 0.5
56 55
54 53
52 51
50 49
48 47
46 45
44 43
42 41
130
39.6 0.5
55 54
53 52
51 50
49 48
47 46
45 44
43 42
41 40
140
42.7 0.5
54 53
52 51
50 49
48 47
46 45
44 43
42 41
40 39
150
45.7 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
160
48.8 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
170
51.8 0.5
52 51
50 49
48 47
46 45
44 43
42 41
40 39
38 37
180
54.9 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
190
57.9 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
200
61.0 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
210
64.0 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
220
67.1 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
230
70.1 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
240
73.1 0.5
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 33
250
76.2 0.5
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 33
260
79.2 0.5
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 32
270
82.3 0.5
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 32
280
85.3 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
290
88.4 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
300
91.4 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
310
94.5 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
320
97.5 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
330
100.6
0.5 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
30 340
103.6
0.5 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 350
106.7
0.5 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 360
109.7
0.5 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 370
112.8
0.5 43
42 41
40 39
38 37
36 35
34 33
32 31
30 29
28 Distance to
Receptor
(ft)
Ground
Effect
Shielding
(dBA)
Calculated (dBA)
Energy
Building Construction
No.
Equipment Description
Reference (dBA) 50 ft Lmax
Quantity
Usage
Factor
1 Noise Level Calculation Prior to Implementation of Noise Attenuation Requirements Lmax
Leq
1 Air Compressor
86 1
40 320
0.5 0
65.8 61.9
1536774.18
Source: MD Acoustics, LLC - Sept. 2021.
Lmax*
66 Leq
62 1- Percentage of time that a piece of equipment is operating at full power.
Lw
97 Lw
94 dBA – A-weighted Decibels
Lmax- Maximum Level
Leq- Equivalent Level
Feet
Meters
Ground Effect
No
Shielding
Leq dBA
1 dBA
Shielding
Leq dBA
2 dBA
Shielding
Leq dBA
3 dBA
Shielding
Leq dBA
4 dBA
Shielding
Leq dBA
5 dBA
Shielding
Leq dBA
6 dBA
Shielding
Leq dBA
7 dBA
Shielding
Leq dBA
8 dBA
Shielding
Leq dBA
9 dBA
Shielding
Leq dBA
10 dBA
Shielding
Leq dBA
11 dBA
Shielding
LeqdBA
12 dBA
Shielding
Leq dBA
13 dBA
Shielding
Leq dBA
14 dBA
Shielding
Leq dBA
15 dBA
Shielding
Leq dBA
50 15.2
0.5 62
61 60
59 58
57 56
55 54
53 52
51 50
49 48
47 60
18.3 0.5
60 59
58 57
56 55
54 53
52 51
50 49
48 47
46 45
70 21.3
0.5 58
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 80
24.4 0.5
57 56
55 54
53 52
51 50
49 48
47 46
45 44
43 42
90 27.4
0.5 55
54 53
52 51
50 49
48 47
46 45
44 43
42 41
40 100
30.5 0.5
54 53
52 51
50 49
48 47
46 45
44 43
42 41
40 39
110
33.5 0.5
53 52
51 50
49 48
47 46
45 44
43 42
41 40
39 38
120
36.6 0.5
52 51
50 49
48 47
46 45
44 43
42 41
40 39
38 37
130
39.6 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
140
42.7 0.5
51 50
49 48
47 46
45 44
43 42
41 40
39 38
37 36
150
45.7 0.5
50 49
48 47
46 45
44 43
42 41
40 39
38 37
36 35
160
48.8 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
170
51.8 0.5
49 48
47 46
45 44
43 42
41 40
39 38
37 36
35 34
180
54.9 0.5
48 47
46 45
44 43
42 41
40 39
38 37
36 35
34 33
190
57.9 0.5
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 32
200
61.0 0.5
47 46
45 44
43 42
41 40
39 38
37 36
35 34
33 32
210
64.0 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
220
67.1 0.5
46 45
44 43
42 41
40 39
38 37
36 35
34 33
32 31
230
70.1 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
240
73.1 0.5
45 44
43 42
41 40
39 38
37 36
35 34
33 32
31 30
250
76.2 0.5
44 43
42 41
40 39
38 37
36 35
34 33
32 31
30 29
260
79.2 0.5
44 43
42 41
40 39
38 37
36 35
34 33
32 31
30 29
270
82.3 0.5
44 43
42 41
40 39
38 37
36 35
34 33
32 31
30 29
280
85.3 0.5
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 28
290
88.4 0.5
43 42
41 40
39 38
37 36
35 34
33 32
31 30
29 28
300
91.4 0.5
42 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
310
94.5 0.5
42 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
320
97.5 0.5
42 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
330
100.6
0.5 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
26 340
103.6
0.5 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
26 350
106.7
0.5 41
40 39
38 37
36 35
34 33
32 31
30 29
28 27
26 360
109.7
0.5 40
39 38
37 36
35 34
33 32
31 30
29 28
27 26
25 370
112.8
0.5 40
39 38
37 36
35 34
33 32
31 30
29 28
27 26
25 Distance to
Receptor
(ft)
Ground
Effect
Shielding
(dBA)
Calculated (dBA)
Energy
Architectural Coating
No.
Equipment Description
Reference (dBA) 50 ft Lmax
Quantity
Usage
Factor
1 Project:
Date Palm Apartments
Date:
10/4/23
Source:
Large Bulldozer
Scenario:
Unmitigated
Location:
Address:
Data Palm Drive between 30th Ave and Mccallum Way, Cathedral City CA PPV = PPVref(25/D)^n (in/sec)
Equipment =
INPUT SECTION IN BLUE
Type
PPVref =
0.089
Reference PPV (in/sec) at 25 ft.
D =
320.00
Distance from Equipment to Receiver (ft)
n =
1.10 Vibration attenuation rate through the ground
PPV =
0.005
IN/SEC
OUTPUT IN RED
DATA OUT RESULTS
2 Large Bulldozer
Note: Based on reference equations from Vibration Guidance Manual, California Department of Transportation, 2006, pgs 38-43.
VIBRATION LEVEL IMPACT
Project Site
DATA INPUT
Appendix D:
SoundPLAN Noise Modeling Inputs/Outputs and Noise Reference Levels
170 Units Date Palm Dr Cathedral City Noise
Octave spectra of the sources in dB(A)
-
001
-
Date Palm Apartments: Outdoor SP
3 Name
Source type
l or A
m,m²
Li
dB(A)
R'w
dB
L'w
dB(A)
Lw
dB(A)
KI
dB
KT
dB
LwMax
dB(A)
DO-Wall
dB
Time histogram
Emission spectrum
63Hz
dB(A)
125Hz
dB(A)
250Hz
dB(A)
500Hz
dB(A)
1kHz
dB(A)
2kHz
dB(A)
4kHz
dB(A)
8kHz
dB(A)
16kHz
dB(A)
Parking
PLot
89.91 55.9
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
93.80 55.7
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
92.84 55.8
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
94.28 55.7
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
101.92
55.4 75.5
0.0 0.0
0 33
Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
101.39
55.4 75.5
0.0 0.0
0 33
Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
29.01 55.4
70.0 0.0
0.0 0
33 Typical spectrum
53.4 65.0
57.5 62.0
62.1 62.5
59.8 53.6
40.8 Parking
PLot
69.28 55.6
74.0 0.0
0.0 0
33 Typical spectrum
57.3 68.9
61.4 65.9
66.0 66.4
63.7 57.5
44.7 Parking
PLot
125.73
55.5 76.5
0.0 0.0
0 33
Typical spectrum
59.9 71.5
64.0 68.5
68.6 69.0
66.3 60.1
47.3 Parking
PLot
123.76
55.1 76.0
0.0 0.0
0 33
Typical spectrum
59.4 71.0
63.5 68.0
68.1 68.5
65.8 59.6
46.8 Parking
PLot
95.07 55.7
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
28.89 55.4
70.0 0.0
0.0 0
33 Typical spectrum
53.4 65.0
57.5 62.0
62.1 62.5
59.8 53.6
40.8 Parking
PLot
26.14 55.8
70.0 0.0
0.0 0
33 Typical spectrum
53.4 65.0
57.5 62.0
62.1 62.5
59.8 53.6
40.8 Parking
PLot
27.99 55.5
70.0 0.0
0.0 0
33 Typical spectrum
53.4 65.0
57.5 62.0
62.1 62.5
59.8 53.6
40.8 Parking
PLot
26.13 55.8
70.0 0.0
0.0 0
33 Typical spectrum
53.4 65.0
57.5 62.0
62.1 62.5
59.8 53.6
40.8 Parking
PLot
26.91 55.7
70.0 0.0
0.0 0
33 Typical spectrum
53.4 65.0
57.5 62.0
62.1 62.5
59.8 53.6
40.8 Parking
PLot
97.76 54.9
74.8 0.0
0.0 0
33 Typical spectrum
58.1 69.7
62.2 66.7
66.8 67.2
64.5 58.3
45.5 Parking
PLot
91.86 55.8
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
112.45
54.9 75.5
0.0 0.0
0 33
Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
100.15
55.4 75.5
0.0 0.0
0 33
Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
97.77 55.5
75.5 0.0
0.0 0
33 Typical spectrum
58.8 70.4
62.9 67.4
67.5 67.9
65.2 59.0
46.2 Parking
PLot
84.42 55.5
74.8 0.0
0.0 0
33 Typical spectrum
58.1 69.7
62.2 66.7
66.8 67.2
64.5 58.3
45.5 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 1 170 Units Date Palm Dr Cathedral City Noise
Octave spectra of the sources in dB(A)
-
001
-
Date Palm Apartments: Outdoor SP
3 Name
Source type
l or A
m,m²
Li
dB(A)
R'w
dB
L'w
dB(A)
Lw
dB(A)
KI
dB
KT
dB
LwMax
dB(A)
DO-Wall
dB
Time histogram
Emission spectrum
63Hz
dB(A)
125Hz
dB(A)
250Hz
dB(A)
500Hz
dB(A)
1kHz
dB(A)
2kHz
dB(A)
4kHz
dB(A)
8kHz
dB(A)
16kHz
dB(A)
HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 2 170 Units Date Palm Dr Cathedral City Noise
Octave spectra of the sources in dB(A)
-
001
-
Date Palm Apartments: Outdoor SP
3 Name
Source type
l or A
m,m²
Li
dB(A)
R'w
dB
L'w
dB(A)
Lw
dB(A)
KI
dB
KT
dB
LwMax
dB(A)
DO-Wall
dB
Time histogram
Emission spectrum
63Hz
dB(A)
125Hz
dB(A)
250Hz
dB(A)
500Hz
dB(A)
1kHz
dB(A)
2kHz
dB(A)
4kHz
dB(A)
8kHz
dB(A)
16kHz
dB(A)
HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 3 170 Units Date Palm Dr Cathedral City Noise
Octave spectra of the sources in dB(A)
-
001
-
Date Palm Apartments: Outdoor SP
3 Name
Source type
l or A
m,m²
Li
dB(A)
R'w
dB
L'w
dB(A)
Lw
dB(A)
KI
dB
KT
dB
LwMax
dB(A)
DO-Wall
dB
Time histogram
Emission spectrum
63Hz
dB(A)
125Hz
dB(A)
250Hz
dB(A)
500Hz
dB(A)
1kHz
dB(A)
2kHz
dB(A)
4kHz
dB(A)
8kHz
dB(A)
16kHz
dB(A)
HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 HVAC
Point
80.2 80.2
0.0 0.0
0 100%/24h
HVAC: 72dB @ 3ft - Carrier
50TFQ0006 - 5
57.3 65.8
68.2 72.5
74.8 74.4
71.4 66.5
54.2 SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 4 170 Units Date Palm Dr Cathedral City Noise
Contribution level
-
001
-
Date Palm Apartments: Outdoor SP
9 Source group
Source type
Tr. lane
Leq,d
dB(A)
A
dB
Receiver R1 Fl G Lr,lim dB(A) Leq,d 42.0 dB(A)
Default parking lot noise
PLot
-10.8
0.0 Default parking lot noise
PLot
-6.7
0.0 Default parking lot noise
PLot
-9.5
0.0 Default parking lot noise
PLot
-3.4
0.0 Default parking lot noise
PLot
-4.1
0.0 Default parking lot noise
PLot
9.3 0.0
Default parking lot noise
PLot
1.5 0.0
Default parking lot noise
PLot
6.7 0.0
Default parking lot noise
PLot
10.5 0.0
Default parking lot noise
PLot
11.3 0.0
Default parking lot noise
PLot
14.0 0.0
Default parking lot noise
PLot
13.5 0.0
Default parking lot noise
PLot
11.5 0.0
Default parking lot noise
PLot
17.8 0.0
Default parking lot noise
PLot
17.2 0.0
Default parking lot noise
PLot
20.5 0.0
Default parking lot noise
PLot
20.8 0.0
Default parking lot noise
PLot
25.2 0.0
Default parking lot noise
PLot
23.7 0.0
Default parking lot noise
PLot
24.1 0.0
Default parking lot noise
PLot
26.9 0.0
Default parking lot noise
PLot
11.9 0.0
Default industrial noise
Point
17.8 0.0
Default industrial noise
Point
17.4 0.0
Default industrial noise
Point
17.4 0.0
Default industrial noise
Point
21.2 0.0
Default industrial noise
Point
21.0 0.0
Default industrial noise
Point
25.9 0.0
Default industrial noise
Point
21.4 0.0
Default industrial noise
Point
21.0 0.0
Default industrial noise
Point
16.9 0.0
Default industrial noise
Point
18.6 0.0
Default industrial noise
Point
23.8 0.0
Default industrial noise
Point
25.3 0.0
Default industrial noise
Point
19.2 0.0
Default industrial noise
Point
18.9 0.0
Default industrial noise
Point
18.0 0.0
Default industrial noise
Point
19.1 0.0
Default industrial noise
Point
20.1 0.0
Default industrial noise
Point
17.1 0.0
Default industrial noise
Point
17.1 0.0
Default industrial noise
Point
16.6 0.0
Default industrial noise
Point
20.1 0.0
Default industrial noise
Point
16.6 0.0
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 1 170 Units Date Palm Dr Cathedral City Noise
Contribution level
-
001
-
Date Palm Apartments: Outdoor SP
9 Source group
Source type
Tr. lane
Leq,d
dB(A)
A
dB
Default industrial noise
Point
16.8 0.0
Default industrial noise
Point
16.6 0.0
Default industrial noise
Point
18.4 0.0
Default industrial noise
Point
19.7 0.0
Default industrial noise
Point
17.3 0.0
Default industrial noise
Point
18.8 0.0
Default industrial noise
Point
20.0 0.0
Default industrial noise
Point
17.4 0.0
Default industrial noise
Point
22.6 0.0
Default industrial noise
Point
20.6 0.0
Default industrial noise
Point
17.8 0.0
Default industrial noise
Point
22.6 0.0
Default industrial noise
Point
26.3 0.0
Default industrial noise
Point
26.5 0.0
Default industrial noise
Point
20.0 0.0
Default industrial noise
Point
27.8 0.0
Default industrial noise
Point
28.3 0.0
Default industrial noise
Point
22.0 0.0
Default industrial noise
Point
32.6 0.0
Default industrial noise
Point
35.9 0.0
Default industrial noise
Point
22.5 0.0
Default industrial noise
Point
21.4 0.0
Default industrial noise
Point
26.6 0.0
Default industrial noise
Point
21.9 0.0
Default industrial noise
Point
26.2 0.0
Default industrial noise
Point
25.4 0.0
Default industrial noise
Point
27.1 0.0
Default industrial noise
Point
20.8 0.0
Receiver R3 Fl G Lr,lim dB(A) Leq,d 41.8 dB(A)
Default parking lot noise
PLot
14.6 0.0
Default parking lot noise
PLot
20.9 0.0
Default parking lot noise
PLot
26.6 0.0
Default parking lot noise
PLot
19.6 0.0
Default parking lot noise
PLot
-0.6
0.0 Default parking lot noise
PLot
13.2 0.0
Default parking lot noise
PLot
14.5 0.0
Default parking lot noise
PLot
13.4 0.0
Default parking lot noise
PLot
16.9 0.0
Default parking lot noise
PLot
18.0 0.0
Default parking lot noise
PLot
0.4 0.0
Default parking lot noise
PLot
-0.3
0.0 Default parking lot noise
PLot
4.7 0.0
Default parking lot noise
PLot
4.1 0.0
Default parking lot noise
PLot
3.3 0.0
Default parking lot noise
PLot
-0.7
0.0 SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 2 170 Units Date Palm Dr Cathedral City Noise
Contribution level
-
001
-
Date Palm Apartments: Outdoor SP
9 Source group
Source type
Tr. lane
Leq,d
dB(A)
A
dB
Default parking lot noise
PLot
-1.2
0.0 Default parking lot noise
PLot
1.1 0.0
Default parking lot noise
PLot
-0.5
0.0 Default parking lot noise
PLot
-0.6
0.0 Default parking lot noise
PLot
-0.4
0.0 Default parking lot noise
PLot
2.5 0.0
Default industrial noise
Point
24.0 0.0
Default industrial noise
Point
27.8 0.0
Default industrial noise
Point
27.6 0.0
Default industrial noise
Point
27.6 0.0
Default industrial noise
Point
21.4 0.0
Default industrial noise
Point
22.0 0.0
Default industrial noise
Point
27.3 0.0
Default industrial noise
Point
23.6 0.0
Default industrial noise
Point
20.9 0.0
Default industrial noise
Point
18.1 0.0
Default industrial noise
Point
16.0 0.0
Default industrial noise
Point
10.2 0.0
Default industrial noise
Point
15.9 0.0
Default industrial noise
Point
23.3 0.0
Default industrial noise
Point
27.8 0.0
Default industrial noise
Point
27.8 0.0
Default industrial noise
Point
27.2 0.0
Default industrial noise
Point
24.8 0.0
Default industrial noise
Point
28.5 0.0
Default industrial noise
Point
29.6 0.0
Default industrial noise
Point
28.3 0.0
Default industrial noise
Point
25.6 0.0
Default industrial noise
Point
29.1 0.0
Default industrial noise
Point
32.4 0.0
Default industrial noise
Point
29.7 0.0
Default industrial noise
Point
22.1 0.0
Default industrial noise
Point
20.6 0.0
Default industrial noise
Point
17.5 0.0
Default industrial noise
Point
20.9 0.0
Default industrial noise
Point
19.9 0.0
Default industrial noise
Point
17.0 0.0
Default industrial noise
Point
21.4 0.0
Default industrial noise
Point
19.7 0.0
Default industrial noise
Point
18.5 0.0
Default industrial noise
Point
16.2 0.0
Default industrial noise
Point
14.6 0.0
Default industrial noise
Point
15.6 0.0
Default industrial noise
Point
15.9 0.0
Default industrial noise
Point
11.7 0.0
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 3 170 Units Date Palm Dr Cathedral City Noise
Contribution level
-
001
-
Date Palm Apartments: Outdoor SP
9 Source group
Source type
Tr. lane
Leq,d
dB(A)
A
dB
Default industrial noise
Point
13.0 0.0
Default industrial noise
Point
13.6 0.0
Default industrial noise
Point
10.3 0.0
Default industrial noise
Point
10.9 0.0
Default industrial noise
Point
23.2 0.0
Default industrial noise
Point
19.8 0.0
Default industrial noise
Point
23.6 0.0
Default industrial noise
Point
18.1 0.0
Default industrial noise
Point
23.6 0.0
Default industrial noise
Point
18.6 0.0
Default industrial noise
Point
24.8 0.0
Receiver R3 Fl G Lr,lim dB(A) Leq,d 42.5 dB(A)
Default parking lot noise
PLot
-7.7
0.0 Default parking lot noise
PLot
-1.8
0.0 Default parking lot noise
PLot
-4.0
0.0 Default parking lot noise
PLot
4.5 0.0
Default parking lot noise
PLot
-1.4
0.0 Default parking lot noise
PLot
20.6 0.0
Default parking lot noise
PLot
16.2 0.0
Default parking lot noise
PLot
10.4 0.0
Default parking lot noise
PLot
9.9 0.0
Default parking lot noise
PLot
8.1 0.0
Default parking lot noise
PLot
5.3 0.0
Default parking lot noise
PLot
5.1 0.0
Default parking lot noise
PLot
4.1 0.0
Default parking lot noise
PLot
4.3 0.0
Default parking lot noise
PLot
5.6 0.0
Default parking lot noise
PLot
11.9 0.0
Default parking lot noise
PLot
12.6 0.0
Default parking lot noise
PLot
21.4 0.0
Default parking lot noise
PLot
18.0 0.0
Default parking lot noise
PLot
18.0 0.0
Default parking lot noise
PLot
17.2 0.0
Default parking lot noise
PLot
2.1 0.0
Default industrial noise
Point
16.1 0.0
Default industrial noise
Point
17.9 0.0
Default industrial noise
Point
25.3 0.0
Default industrial noise
Point
26.2 0.0
Default industrial noise
Point
25.4 0.0
Default industrial noise
Point
26.0 0.0
Default industrial noise
Point
20.6 0.0
Default industrial noise
Point
24.8 0.0
Default industrial noise
Point
18.1 0.0
Default industrial noise
Point
17.5 0.0
Default industrial noise
Point
20.0 0.0
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 4 170 Units Date Palm Dr Cathedral City Noise
Contribution level
-
001
-
Date Palm Apartments: Outdoor SP
9 Source group
Source type
Tr. lane
Leq,d
dB(A)
A
dB
Default industrial noise
Point
22.6 0.0
Default industrial noise
Point
15.9 0.0
Default industrial noise
Point
16.2 0.0
Default industrial noise
Point
19.0 0.0
Default industrial noise
Point
25.7 0.0
Default industrial noise
Point
30.1 0.0
Default industrial noise
Point
16.1 0.0
Default industrial noise
Point
17.8 0.0
Default industrial noise
Point
24.3 0.0
Default industrial noise
Point
25.3 0.0
Default industrial noise
Point
16.2 0.0
Default industrial noise
Point
17.7 0.0
Default industrial noise
Point
23.8 0.0
Default industrial noise
Point
26.2 0.0
Default industrial noise
Point
26.1 0.0
Default industrial noise
Point
23.1 0.0
Default industrial noise
Point
16.8 0.0
Default industrial noise
Point
20.1 0.0
Default industrial noise
Point
19.1 0.0
Default industrial noise
Point
16.4 0.0
Default industrial noise
Point
18.8 0.0
Default industrial noise
Point
19.8 0.0
Default industrial noise
Point
16.3 0.0
Default industrial noise
Point
21.5 0.0
Default industrial noise
Point
24.1 0.0
Default industrial noise
Point
16.4 0.0
Default industrial noise
Point
24.5 0.0
Default industrial noise
Point
22.5 0.0
Default industrial noise
Point
17.1 0.0
Default industrial noise
Point
30.0 0.0
Default industrial noise
Point
25.7 0.0
Default industrial noise
Point
19.1 0.0
Default industrial noise
Point
27.2 0.0
Default industrial noise
Point
27.5 0.0
Default industrial noise
Point
30.0 0.0
Default industrial noise
Point
30.1 0.0
Default industrial noise
Point
34.1 0.0
Default industrial noise
Point
34.1 0.0
Default industrial noise
Point
22.5 0.0
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 5 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Receiver R1 Fl G Lr,lim dB(A) Leq,d 42.0 dB(A)
Leq,d
20.5 4.4
15.9 2.1
8.4 13.4
14.7 9.8
-4.2
-39.5
Leq,d
17.2 2.3
13.1 -1.3
5.2 10.1
11.0 5.8
-11.0
-55.1
Leq,d
17.8 2.2
13.0 -1.3
6.4 11.3
11.6 6.9
-10.5
-54.9
Leq,d
11.5 -1.3
5.0 -8.6
-1.5
4.2 7.6
0.2 -22.4
-74.8
Leq,d
13.5 0.3
8.2 -4.9
1.0 7.5
8.0 1.1
-19.4
-69.0
Leq,d
20.8 4.3
15.8 2.0
8.2 14.3
15.1 10.2
-3.9
-39.2
Leq,d
11.9 -3.2
6.6 -6.5
-0.4
6.0 6.3
0.7 -15.5
-56.3
Leq,d
26.9 10.4
22.5 10.9
16.6 19.6
20.2 16.6
7.2 -14.8
Leq,d
24.1 7.9
19.8 6.7
12.9 17.0
17.6 13.3
1.5 -27.1
Leq,d
23.7 7.6
19.4 6.4
12.6 16.5
17.1 12.9
1.3 -27.0
Leq,d
25.2 6.7
20.3 7.9
14.4 18.6
19.2 14.9
2.8 -26.3
Leq,d
-4.1
-12.2
-7.9
-15.2
-12.7
-13.5
-14.6
-24.8
-47.2
Leq,d
-3.4
-10.2
-5.3
-19.8
-17.4
-16.5
-18.0
-27.2
-52.5
Leq,d
-9.5
-16.9
-12.6
-23.6
-22.2
-18.0
-20.3
-30.1
-56.6
Leq,d
-6.7
-14.8
-9.4
-19.2
-17.0
-18.6
-17.6
-28.4
-57.1
Leq,d
-10.8
-17.3
-13.2
-23.8
-22.4
-24.6
-25.4
-34.7
-63.9
Leq,d
9.3 -4.1
1.3 -12.5
-4.5
3.9 5.2
-2.0
-23.9
-81.1
Leq,d
14.0 0.6
8.8 -2.9
1.6 7.9
8.4 1.4
-19.0
-69.8
Leq,d
11.3 -1.7
6.6 -6.8
-0.9
5.1 5.3
-1.4
-22.9
-78.9
Leq,d
10.5 -2.1
6.3 -7.2
-0.8
3.7 3.9
-2.8
-25.1
-84.7
Leq,d
6.7 -3.1
3.4 -10.0
-4.5
-1.4
-1.4
-9.7
-33.0
-94.5
Leq,d
1.5 -6.9
-2.2
-14.3
-9.0
-6.9
-6.6
-16.1
-40.1
-93.9
Leq,d
22.6 -30.7
-24.7
-20.7
-7.7
-2.7
-8.7
-0.6
1.4 0.3
2.4 2.5
4.6 5.7
6.9 11.0
13.2 9.6
12.2 14.4
14.3 14.5
10.2 9.3
4.3 -0.4
-12.3
-27.4
-43.3
-65.8
-94.7
Leq,d
17.8 -31.8
-25.8
-21.8
-8.8
-3.8
-9.8
-1.8
0.1 -1.0
1.0 1.0
2.9 3.8
4.8 8.6
10.3 6.1
7.8 8.8
6.1 6.2
1.6 0.4
-5.1
-10.4
-23.3
-39.6
-57.4
-82.4
Leq,d
20.6 -29.3
-23.3
-19.3
-6.3
-1.4
-7.4
0.6 2.6
1.5 3.5
3.5 5.4
6.4 7.3
11.2 13.0
8.8 10.6
11.6 9.1
9.4 5.3
4.6 -0.1
-4.1
-15.0
-28.6
-42.5
-62.4
-88.0
Leq,d
20.0 -28.2
-22.3
-18.5
-5.7
-0.9
-7.1
0.7 2.5
1.3 2.9
2.8 4.7
5.6 6.4
10.2 11.9
7.5 9.2
10.0 10.2
10.4 6.1
5.2 0.3
-4.1
-15.6
-29.9
-44.8
-66.7
-95.3
Leq,d
26.5 -22.5
-16.7
-12.9
-0.1
4.7 -1.5
6.3 8.1
6.9 8.5
8.5 10.3
11.3 13.0
16.8 18.5
14.9 16.9
18.0 15.4
15.7 11.6
11.1 7.0
4.0 -5.1
-15.6
-24.9
-38.4
-56.2
Leq,d
26.3 -26.5
-20.4
-16.5
-3.5
1.5 -4.5
3.5 5.5
4.4 6.4
6.4 8.4
9.4 10.3
16.1 18.0
14.5 16.5
17.9 15.9
17.1 13.2
12.8 8.6
5.2 -4.5
-16.1
-27.0
-42.5
-62.6
Leq,d
18.8 -31.1
-25.1
-21.1
-8.1
-3.1
-9.1
-1.1
0.8 -0.3
1.7 1.7
3.7 4.6
5.6 9.5
11.2 7.1
8.9 9.9
7.4 7.6
3.3 2.4
-2.6
-7.3
-19.3
-34.5
-50.8
-73.7
Leq,d
17.3 -30.3
-24.4
-20.5
-7.7
-2.9
-9.1
-1.4
0.4 -0.9
0.7 0.6
2.5 3.4
4.3 8.1
9.9 5.6
7.3 8.2
5.5 5.4
0.8 -0.6
-6.4
-12.1
-25.5
-42.8
-61.8
-88.5
Leq,d
19.7 -28.2
-22.3
-18.5
-5.7
-0.9
-7.1
0.7 2.5
1.3 2.9
2.8 4.7
5.7 6.6
10.4 12.2
7.9 9.7
10.6 8.0
8.2 3.9
2.9 -2.0
-6.5
-18.2
-32.8
-48.0
-69.6
-97.5
Leq,d
22.6 -30.9
-24.8
-20.8
-7.8
-2.8
-8.7
-0.7
1.3 0.4
2.5 2.6
4.8 6.0
7.3 11.7
14.2 11.2
13.9 14.9
12.4 12.6
8.4 7.5
2.5 -2.1
-13.9
-28.9
-44.8
-67.4
-96.5
Leq,d
17.4 -32.1
-26.1
-22.1
-9.1
-4.2
-10.2
-2.2
-0.2
-1.3
0.6 0.6
2.6 3.5
4.4 8.3
10.0 5.8
7.5 8.4
5.8 5.8
1.2 -0.1
-5.7
-11.2
-24.3
-41.1
-59.4
-85.2
Leq,d
20.0 -29.7
-23.7
-19.7
-6.7
-1.8
-7.8
0.2 2.1
1.1 3.0
3.0 5.0
5.9 6.8
10.7 12.4
8.2 10.0
10.9 8.4
8.5 4.3
3.4 -1.5
-5.8
-17.2
-31.3
-45.9
-66.7
-93.4
Leq,d
27.8 -20.2
-14.2
-15.0
-2.0
3.0 -3.0
5.0 7.0
5.9 7.9
7.9 9.9
10.9 11.9
17.5 19.5
15.9 18.2
19.8 17.5
18.0 14.1
13.9 10.1
7.3 -1.7
-12.3
-21.7
-35.3
-53.1
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 1 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Leq,d
26.2 -25.8
-19.8
-15.8
-2.8
2.2 -3.8
4.3 6.2
5.2 7.2
7.3 9.3
10.4 11.4
15.5 17.5
13.6 15.7
17.2 15.4
16.6 14.0
15.1 11.4
8.9 0.1
-10.5
-20.2
-34.5
-53.4
Leq,d
21.9 -28.5
-22.5
-18.5
-5.5
-0.6
-6.6
1.4 3.4
2.3 4.3
4.3 6.3
7.2 8.2
12.1 13.9
9.8 12.2
13.3 10.8
11.2 7.1
6.6 2.2
-1.3
-11.6
-24.2
-36.8
-55.0
-78.6
Leq,d
26.6 -26.3
-20.2
-16.2
-3.2
1.7 -4.2
3.8 5.8
4.8 6.8
6.9 9.0
10.1 11.2
15.3 17.4
13.7 16.1
17.9 16.7
18.2 14.6
14.4 10.7
7.9 -1.1
-12.0
-22.2
-37.1
-56.7
Leq,d
20.8 -30.3
-24.2
-20.2
-7.3
-2.3
-8.3
-0.3
1.6 0.6
2.6 2.6
4.5 5.5
6.4 10.3
12.1 7.9
11.9 13.1
10.6 10.7
6.4 5.3
0.2 -4.5
-16.3
-31.0
-46.2
-67.6
-95.2
Leq,d
27.1 -25.4
-19.3
-15.3
-2.3
2.6 -3.4
4.7 6.7
5.6 7.7
7.8 9.8
10.8 12.0
16.0 18.1
14.2 16.5
18.1 16.4
18.0 15.6
15.6 12.0
9.6 1.0
-9.4
-18.7
-32.6
-50.8
Leq,d
25.4 -28.3
-22.2
-18.2
-5.2
-0.2
-6.2
1.9 3.9
2.9 5.0
5.2 7.3
8.5 9.8
14.1 16.5
13.3 16.6
18.0 15.5
16.0 12.0
11.5 7.3
3.9 -6.2
-18.7
-31.0
-48.8
-71.9
Leq,d
32.6 -23.2
-17.2
-13.1
-0.1
4.9 -1.0
7.2 9.3
8.4 10.6
11.0 13.4
15.0 17.8
22.1 24.9
21.2 23.2
24.4 22.1
22.7 19.1
19.2 15.8
13.7 5.6
-3.7
-11.7
-23.5
-39.2
Leq,d
22.0 -26.6
-20.7
-16.9
-4.2
0.5 -5.7
1.9 3.7
2.4 4.0
3.9 5.8
6.7 7.5
11.3 13.0
10.0 11.7
14.6 12.0
12.1 7.8
6.9 2.1
-2.3
-13.5
-27.5
-41.7
-61.8
-87.6
Leq,d
28.3 -22.4
-16.3
-12.3
0.6 5.6
-0.4
7.7 9.6
8.6 10.5
10.5 12.5
13.4 14.4
18.7 20.5
16.4 18.2
19.2 16.9
17.4 13.7
13.8 10.4
8.3 0.4
-8.7
-16.4
-27.8
-43.0
Leq,d
21.4 -28.8
-22.8
-18.8
-5.8
-0.9
-6.9
1.2 3.1
2.0 4.0
4.1 6.0
7.0 7.9
11.8 13.6
9.5 11.4
12.5 10.0
10.4 6.4
5.9 1.6
-2.0
-12.4
-25.3
-38.3
-56.9
-81.1
Leq,d
22.5 -25.4
-19.6
-15.8
-3.0
1.7 -4.6
3.1 4.8
3.6 5.2
5.1 7.0
7.9 8.7
12.5 14.2
11.1 13.2
14.1 11.4
11.5 7.2
6.2 1.4
-2.7
-13.5
-26.4
-38.9
-56.7
-79.6
Leq,d
35.9 -19.4
-13.4
-9.3
3.8 8.8
2.9 11.4
13.5 12.7
14.8 15.4
18.1 20.2
21.6 25.5
28.1 24.0
26.0 27.1
25.0 25.8
22.4 22.9
20.1 18.8
11.9 4.2
-1.5
-10.6
-22.9
Leq,d
16.9 -30.7
-24.8
-21.1
-8.4
-3.6
-9.8
-2.1
-0.3
-1.5
0.2 0.2
2.0 3.0
3.9 7.7
9.4 5.2
6.9 7.8
5.1 5.0
0.4 -1.1
-7.0
-12.8
-26.6
-44.2
-63.9
-91.2
Leq,d
21.0 -28.0
-22.1
-18.2
-5.3
-0.5
-6.6
1.1 2.9
1.6 2.9
2.9 4.7
5.7 6.5
10.3 12.2
9.8 11.6
12.7 10.4
10.9 7.3
6.2 1.0
-3.9
-16.2
-31.7
-48.2
-71.2
Leq,d
21.4 -28.3
-22.4
-18.5
-5.6
-0.8
-7.0
0.7 2.5
1.2 2.7
2.6 4.5
5.5 6.3
10.2 12.0
10.5 12.8
13.8 11.2
11.4 7.0
5.9 0.7
-4.3
-16.6
-32.0
-48.3
-70.9
-99.8
Leq,d
25.3 -23.7
-17.9
-14.1
-1.3
3.4 -2.8
5.0 6.7
5.5 7.2
7.1 9.0
9.9 10.8
14.6 16.3
12.9 14.7
17.9 15.3
15.6 11.5
10.9 6.5
2.9 -7.2
-19.0
-29.9
-45.1
-64.7
Leq,d
23.8 -27.4
-21.4
-17.4
-4.4
0.5 -5.5
2.5 4.5
3.4 5.4
5.4 7.4
8.4 9.3
13.3 15.1
11.0 12.8
16.0 13.5
14.6 10.4
9.7 5.2
1.6 -8.4
-20.3
-31.8
-48.2
-69.7
Leq,d
18.6 -31.3
-25.2
-21.3
-8.3
-3.3
-9.3
-1.3
0.6 -0.4
1.5 1.5
3.5 4.4
5.4 9.3
11.0 6.9
8.7 9.7
7.2 7.4
3.0 2.1
-3.0
-7.8
-20.0
-35.4
-52.0
-75.4
Leq,d
17.4 -31.7
-25.7
-21.7
-8.7
-3.8
-9.8
-1.8
0.1 -1.1
0.9 0.8
2.7 3.5
4.4 8.1
9.7 5.3
8.1 8.8
5.8 5.5
0.5 -1.3
-7.3
-13.1
-26.5
-43.2
-61.3
-86.5
Leq,d
17.4 -32.9
-26.8
-22.9
-9.9
-4.9
-10.9
-2.9
-1.0
-2.1
-0.1
-0.1
1.8 2.7
3.7 7.6
9.3 5.1
8.4 9.3
6.6 6.6
1.9 0.4
-5.6
-11.6
-25.6
-43.5
-63.4
-91.0
Leq,d
17.8 -33.8
-27.8
-23.8
-10.8
-5.8
-11.8
-3.8
-1.8
-2.8
-0.8
-0.7
1.3 2.3
3.4 7.5
9.5 5.6
7.8 9.5
7.9 8.7
3.9 2.3
-3.4
-9.9
-24.7
-43.8
-65.4
-95.4
Leq,d
25.9 -26.8
-20.7
-16.7
-3.7
1.3 -4.7
3.3 5.3
4.3 6.3
6.4 8.5
9.5 10.7
14.7 16.8
13.0 15.3
17.1 15.6
17.6 14.0
13.8 9.9
7.0 -2.2
-13.5
-24.1
-39.6
-60.0
Leq,d
21.0 -29.1
-23.1
-19.1
-6.1
-1.1
-7.1
0.9 2.8
1.8 3.7
3.8 5.7
6.7 7.6
11.6 13.3
9.2 11.1
12.2 9.7
10.1 6.1
5.5 1.1
-2.6
-13.2
-26.4
-39.7
-58.8
-83.6
Leq,d
21.2 -28.2
-22.2
-18.2
-5.2
-0.3
-6.3
1.5 3.4
2.3 3.3
3.3 5.2
6.6 7.5
11.3 13.7
9.4 11.7
12.9 10.1
9.9 5.2
3.8 -1.8
-7.3
-20.0
-36.0
-53.0
-76.8
Leq,d
19.2 -28.6
-22.7
-18.9
-6.1
-1.3
-7.5
0.2 2.0
0.7 2.3
2.2 4.0
5.0 5.8
9.6 11.2
6.9 8.5
9.3 6.5
9.9 5.7
4.8 0.1
-3.9
-15.9
-31.6
-48.4
-72.0
Leq,d
16.6 -31.7
-25.9
-22.1
-9.3
-4.6
-10.8
-3.2
-1.5
-2.7
-1.1
-1.2
0.7 1.6
2.5 6.3
8.1 3.8
5.5 9.0
6.7 7.0
2.0 0.0
-6.7
-13.9
-29.6
-50.0
-73.2
Leq,d
20.1 -31.6
-25.5
-21.5
-8.5
-3.6
-9.6
-1.5
0.4 -0.7
1.3 1.4
3.3 4.3
5.3 9.3
11.1 8.5
11.2 12.3
9.8 10.2
6.1 5.4
0.8 -3.5
-15.6
-31.6
-48.8
-72.9
Leq,d
16.6 -32.1
-26.0
-22.1
-9.1
-4.1
-10.2
-2.2
-0.3
-1.4
0.5 0.5
2.3 3.2
4.0 7.8
9.4 5.0
6.5 7.3
4.4 4.1
-0.8
-2.4
-8.0
-14.0
-27.6
-44.8
-63.4
-89.4
Leq,d
18.4 -32.0
-25.9
-21.9
-9.0
-4.0
-10.0
-2.0
0.0 -1.1
0.9 0.9
2.8 3.8
4.8 8.7
10.5 6.3
8.1 10.4
7.8 7.8
3.3 2.1
-3.2
-8.3
-20.8
-36.6
-53.6
-77.3
Leq,d
16.6 -32.4
-26.4
-22.4
-9.4
-4.5
-10.5
-2.5
-0.6
-1.8
0.1 0.1
1.9 2.8
3.6 7.4
8.9 4.5
7.4 8.1
5.0 4.6
-0.5
-2.4
-8.8
-15.1
-29.1
-46.8
-66.2
-93.0
Leq,d
16.8 -33.4
-27.4
-23.4
-10.4
-5.5
-11.5
-3.4
-1.5
-2.6
-0.6
-0.7
1.3 2.2
3.1 7.0
8.7 4.5
7.8 8.7
6.0 5.9
1.1 -0.6
-6.8
-13.3
-27.8
-46.5
-67.5
-96.6
Leq,d
19.1 -31.4
-25.3
-21.4
-8.4
-3.4
-9.4
-1.4
0.5 -0.6
1.4 1.4
3.3 4.3
5.2 9.1
10.8 6.6
10.2 11.1
8.4 8.4
3.8 2.4
-3.2
-8.5
-21.2
-37.2
-54.2
-78.1
Leq,d
18.0 -32.6
-26.6
-22.6
-9.6
-4.7
-10.7
-2.6
-0.7
-1.8
0.2 0.2
2.1 3.0
4.0 7.9
9.6 5.4
8.7 10.5
7.7 7.7
3.0 1.5
-4.4
-10.4
-24.2
-41.9
-61.3
-88.2
Leq,d
18.9 -33.6
-27.6
-23.6
-10.5
-5.6
-11.5
-3.5
-1.5
-2.5
-0.5
-0.4
1.7 2.8
4.0 8.2
10.4 6.8
9.5 11.8
9.1 9.0
4.3 2.7
-3.4
-9.7
-24.0
-42.7
-63.8
-93.1
Leq,d
17.1 -33.1
-27.1
-23.1
-10.1
-5.2
-11.2
-3.2
-1.3
-2.3
-0.4
-0.4
1.5 2.5
3.4 7.3
9.0 4.8
8.1 9.0
6.3 6.2
1.5 -0.1
-6.2
-12.5
-26.7
-45.0
-65.4
-93.8
Leq,d
17.1 -31.1
-25.1
-21.1
-8.1
-3.2
-9.2
-1.6
0.3 -0.9
0.2 0.2
2.0 3.3
4.1 7.9
10.1 5.7
7.2 8.0
5.1 4.8
-0.2
-2.1
-5.8
-12.8
-28.2
-48.3
-70.9
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 2 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Leq,d
20.1 -27.9
-21.9
-18.0
-5.0
-0.2
-6.2
1.5 3.3
2.1 3.2
3.1 4.9
6.0 6.8
10.5 12.4
8.0 10.4
11.5 8.6
8.4 3.6
2.1 -3.5
-8.7
-21.2
-36.7
-53.1
-76.0
Receiver R3 Fl G Lr,lim dB(A) Leq,d 41.8 dB(A)
Leq,d
-0.7
-8.6
-3.8
-13.2
-10.2
-10.9
-11.6
-21.7
-48.8
Leq,d
3.3 -5.9
-0.6
-8.8
-6.9
-4.8
-5.4
-12.0
-39.6
Leq,d
4.1 -5.7
-0.4
-11.0
-6.9
-3.1
-3.1
-9.4
-36.0
Leq,d
4.7 -6.8
-1.5
-12.1
-10.3
-1.4
-0.3
-5.9
-30.2
-95.9
Leq,d
-0.3
-8.1
-3.4
-14.4
-12.8
-8.9
-10.3
-20.2
-45.1
Leq,d
-1.2
-9.3
-4.7
-15.7
-10.6
-10.0
-11.4
-20.9
-48.1
Leq,d
2.5 -8.2
-2.2
-12.7
-8.9
-5.3
-3.6
-10.5
-31.6
-86.9
Leq,d
-0.4
-8.1
-2.7
-12.9
-11.0
-13.0
-13.9
-23.5
-52.9
Leq,d
-0.6
-8.5
-3.9
-14.7
-10.6
-10.0
-10.1
-20.3
-48.1
Leq,d
-0.5
-8.3
-3.5
-12.7
-10.6
-11.1
-11.0
-21.8
-49.4
Leq,d
1.1 -6.7
-1.5
-12.2
-10.5
-8.3
-11.0
-21.7
-46.6
Leq,d
-0.6
-10.4
-5.3
-11.6
-8.3
-8.1
-10.6
-18.9
-38.3
-83.1
Leq,d
19.6 1.6
12.4 3.9
9.8 13.5
14.2 10.1
-0.9
-27.9
Leq,d
26.6 11.0
22.1 11.0
16.5 19.1
19.7 16.3
7.4 -13.1
Leq,d
20.9 4.3
16.6 4.2
10.1 13.6
14.2 10.3
-0.1
-25.3
Leq,d
14.6 -2.2
8.6 -3.9
4.0 8.5
9.1 4.2
-10.1
-46.4
Leq,d
13.2 0.1
7.2 -2.6
0.2 7.4
7.4 3.2
-12.5
-52.4
Leq,d
0.4 -8.1
-3.3
-14.1
-12.6
-12.4
-5.5
-13.4
-42.6
Leq,d
18.0 5.1
14.0 0.0
6.1 10.9
11.3 6.1
-9.1
-48.1
Leq,d
16.9 3.2
11.2 -0.3
5.9 11.0
11.2 5.2
-12.4
-57.5
Leq,d
13.4 1.3
8.1 -2.1
3.2 7.1
7.1 0.7
-17.8
-66.0
Leq,d
14.5 0.5
6.8 -4.3
4.1 8.9
9.4 4.5
-9.5
-47.4
Leq,d
18.5 -33.3
-27.2
-23.2
-10.3
-5.3
-11.3
-3.3
-1.4
-2.5
-0.5
-0.5
1.4 2.4
3.3 7.2
10.9 6.6
9.5 11.2
8.4 8.3
3.4 1.7
-4.6
-11.1
-25.7
-44.4
-65.2
-93.8
Leq,d
19.7 -28.1
-22.2
-18.4
-5.5
-0.7
-6.9
0.8 2.6
1.4 2.9
2.8 4.7
5.6 6.5
10.4 12.2
7.9 9.7
10.7 8.1
8.3 4.0
3.1 0.2
-4.3
-16.0
-30.7
-46.2
-68.1
-96.5
Leq,d
21.4 -31.1
-25.0
-21.0
-8.1
-3.1
-9.1
-1.1
0.8 -0.2
1.7 1.7
3.7 4.6
5.6 9.5
13.3 9.1
12.1 14.2
11.6 11.9
7.8 6.7
1.2 -3.8
-16.6
-32.8
-50.1
-74.0
Leq,d
15.6 -34.3
-28.3
-24.3
-11.3
-6.4
-12.4
-4.4
-2.5
-3.6
-1.6
-1.6
0.3 1.2
2.1 6.0
7.7 3.5
5.1 7.4
5.5 5.2
0.2 -1.9
-8.7
-15.9
-31.6
-51.9
-75.0
Leq,d
14.6 -34.1
-28.1
-24.1
-11.2
-6.2
-12.3
-4.4
-2.6
-3.8
-1.9
-2.1
-0.4
0.3 0.9
4.5 5.8
1.1 2.3
6.9 4.8
5.1 -0.2
-2.5
-9.4
-16.5
-32.3
-52.7
-75.9
Leq,d
16.2 -31.0
-25.1
-21.3
-8.5
-3.7
-9.9
-2.0
-0.2
-1.4
0.3 0.2
1.9 2.5
3.2 6.7
8.1 3.4
4.7 8.1
5.0 4.6
-0.5
1.4 -4.9
-11.3
-25.7
-44.1
-64.0
-90.5
Leq,d
17.5 -32.1
-26.1
-22.1
-9.1
-4.2
-10.2
-2.2
-0.3
-1.3
0.6 0.6
2.6 3.5
4.5 8.3
10.1 5.9
7.6 8.6
6.0 6.1
1.6 0.3
-5.2
-10.5
-23.6
-40.1
-58.4
-84.0
Leq,d
20.6 -29.0
-23.0
-19.0
-6.0
-1.1
-7.1
0.9 2.9
1.8 3.7
3.7 5.6
6.6 7.5
11.3 13.0
8.8 10.5
11.5 8.9
9.1 4.8
3.9 1.6
-2.5
-13.5
-27.0
-40.8
-60.4
-85.8
Leq,d
22.1 -26.6
-20.6
-16.7
-3.7
1.2 -4.9
2.8 4.6
3.3 4.4
4.3 6.1
7.2 8.0
11.8 13.7
10.9 12.6
13.6 11.0
11.1 8.0
7.1 3.3
-1.1
-12.4
-26.5
-40.9
-61.2
-87.3
Leq,d
17.0 -32.8
-26.7
-22.8
-9.8
-4.8
-10.8
-2.8
-0.9
-2.0
0.0 0.0
1.9 2.9
3.8 7.7
9.5 5.3
7.0 8.0
5.4 5.4
0.8 1.0
-4.8
-10.8
-24.5
-42.2
-61.7
-88.9
Leq,d
19.9 -29.8
-23.8
-19.8
-6.8
-1.8
-7.9
0.2 2.1
1.0 3.0
3.0 4.9
5.8 6.8
10.6 12.4
8.2 9.9
10.9 8.4
8.6 4.3
3.4 -1.4
-5.8
-17.1
-31.3
-46.0
-66.8
-93.7
Leq,d
20.9 -30.4
-24.4
-20.4
-7.4
-2.4
-8.4
-0.4
1.5 0.4
2.4 2.4
4.4 5.3
6.3 10.2
13.9 9.7
11.5 12.5
10.0 10.2
5.9 4.9
-0.1
-4.0
-15.7
-30.7
-46.5
-68.6
-96.8
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 3 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Leq,d
15.9 -31.8
-25.8
-21.8
-8.9
-4.0
-10.1
-2.1
-0.3
-1.5
0.3 0.1
1.8 2.5
3.2 6.7
8.0 3.4
4.6 7.7
4.5 4.1
-1.1
-3.1
-9.4
-15.8
-29.7
-47.1
-65.7
-91.1
Leq,d
18.1 -29.9
-23.9
-20.0
-7.0
-2.1
-8.2
-0.2
1.6 0.4
2.2 2.1
3.8 4.5
5.1 8.7
10.0 7.2
8.5 9.1
6.0 5.7
0.7 -0.9
-6.7
-12.0
-24.4
-39.4
-54.7
-76.0
Leq,d
23.6 -24.7
-18.8
-14.9
-2.0
2.8 -3.3
4.4 6.1
4.8 6.0
5.8 7.4
8.3 9.0
14.4 16.1
12.3 13.9
14.7 12.3
12.3 7.9
6.9 2.0
-2.2
-13.1
-26.3
-39.3
-57.3
-80.1
Leq,d
19.8 -29.8
-23.8
-19.9
-6.9
-2.0
-8.1
-0.1
1.7 0.5
2.3 2.1
3.8 4.5
5.2 8.7
10.1 9.7
11.2 12.0
9.2 9.1
4.5 3.3
-2.0
-6.9
-19.1
-34.3
-50.2
-72.5
Leq,d
24.8 -23.8
-17.9
-14.0
-1.1
3.7 -2.5
5.2 7.0
5.6 6.8
6.5 8.2
9.1 9.7
15.5 17.9
13.5 15.1
15.9 13.2
13.3 9.1
8.4 4.0
0.4 -9.7
-21.9
-33.7
-50.6
-72.3
Leq,d
18.6 -30.1
-24.1
-20.1
-7.2
-2.3
-8.3
-0.4
1.4 0.3
2.1 1.9
3.7 4.3
5.0 8.6
9.9 7.1
9.8 10.5
7.5 7.3
2.4 0.9
-4.9
-10.4
-23.2
-38.9
-55.0
-76.9
Leq,d
23.6 -27.7
-21.7
-17.7
-4.8
0.2 -5.9
2.1 3.9
2.8 4.6
4.5 6.3
7.0 7.8
11.4 15.8
12.2 14.0
15.1 13.1
13.8 10.6
10.2 5.8
2.2 -8.1
-20.8
-33.3
-51.3
-74.8
Leq,d
13.6 -32.0
-26.0
-22.1
-9.3
-4.5
-10.8
-3.1
-1.5
-2.9
-1.4
-1.9
-0.5
-0.1
0.2 3.4
4.4 -0.6
0.4 0.6
5.1 5.0
0.4 -1.1
-6.9
-12.6
-26.1
-43.4
-62.5
-89.2
Leq,d
13.0 -34.3
-28.3
-24.3
-11.3
-6.4
-12.5
-4.5
-2.7
-3.9
-2.0
-2.2
-0.5
0.2 0.9
4.5 5.9
1.2 2.5
2.9 -0.5
-1.2
-6.7
-9.2
-16.4
-23.9
-39.7
-60.1
-83.3
Leq,d
11.7 -34.3
-28.3
-24.5
-11.7
-6.9
-13.2
-5.5
-3.9
-5.3
-3.8
-4.3
-2.9
-2.6
-2.3
0.9 1.9
-3.1
3.0 3.5
2.1 1.5
-4.0
-6.7
-14.2
-22.4
-39.4
-60.8
-85.8
Leq,d
23.2 -25.1
-19.3
-15.4
-2.7
2.1 -4.1
3.6 5.3
4.0 5.5
5.3 7.0
7.7 8.4
12.0 15.8
12.2 13.8
14.6 12.3
12.4 8.0
7.1 2.4
-1.7
-12.5
-25.6
-38.4
-56.3
-79.0
Leq,d
10.9 -32.7
-26.9
-23.1
-10.4
-5.7
-12.0
-4.5
-2.9
-4.4
-3.0
-3.5
-2.0
-1.6
-1.3
2.0 3.1
-1.9
-1.0
-0.9
-4.4
-5.4
-2.7
-4.8
-11.5
-18.7
-34.4
-55.0
-78.7
Leq,d
10.3 -34.2
-28.3
-24.4
-11.5
-6.8
-13.0
-5.3
-3.6
-5.1
-3.5
-4.0
-2.6
-2.2
-1.9
1.3 2.3
-2.7
-1.8
-1.7
-1.0
-2.0
-7.8
-10.8
-18.4
-25.4
-42.4
-59.2
-84.3
Leq,d
20.9 -28.4
-22.3
-18.4
-5.4
-0.4
-6.5
1.5 3.5
2.4 4.3
4.3 6.2
7.1 7.9
11.8 13.4
9.1 10.8
11.7 9.0
9.1 4.7
3.9 -0.8
-4.8
-15.5
-28.7
-41.7
-60.3
-84.4
Leq,d
23.6 -28.8
-22.7
-18.7
-5.7
-0.8
-6.8
1.3 3.2
2.2 4.2
4.3 6.3
7.3 8.4
12.4 15.8
11.8 13.7
15.0 12.9
13.8 10.6
11.1 7.0
3.2 -7.0
-20.0
-33.1
-51.7
-75.8
Leq,d
27.3 -26.6
-20.5
-16.5
-3.5
1.5 -4.5
3.6 5.6
4.6 6.7
6.8 8.9
10.1 11.3
15.5 18.5
14.9 17.6
20.0 17.6
18.1 14.3
14.1 10.3
7.4 -1.5
-12.7
-23.3
-38.6
-58.7
Leq,d
10.2 -34.1
-28.1
-24.2
-11.4
-6.6
-12.8
-5.0
-3.4
-4.8
-3.3
-3.7
-2.3
-1.9
-1.6
1.7 2.7
-2.3
-1.3
-1.2
-4.8
-5.8
-11.5
-14.1
-21.3
-28.7
-44.4
-64.5
-85.6
Leq,d
16.0 -30.7
-24.8
-21.0
-8.3
-3.5
-9.7
-1.9
-0.1
-1.4
0.4 0.2
1.9 2.6
3.2 6.7
8.1 3.4
6.6 7.2
4.2 3.8
-1.2
-3.1
-9.3
-15.6
-27.5
-45.4
-64.7
-90.8
Leq,d
18.1 -31.6
-25.6
-21.6
-8.6
-3.7
-9.7
-1.7
0.3 -0.8
1.2 1.2
3.1 4.0
5.0 8.9
10.6 6.4
8.2 9.2
6.6 6.7
2.2 1.1
-4.2
-9.3
-21.2
-37.5
-55.1
-79.6
Leq,d
27.6 -21.7
-15.6
-11.7
1.3 6.3
0.2 8.4
10.3 9.2
11.0 10.9
12.8 13.7
14.5 18.3
20.0 15.7
17.4 18.3
15.7 15.9
12.0 11.8
8.1 5.8
-2.2
-11.4
-19.0
-30.2
-45.0
Leq,d
27.8 -23.8
-17.8
-13.8
-0.8
4.1 -1.9
6.2 8.1
7.1 9.0
9.1 11.0
13.3 14.3
18.2 20.0
15.9 17.8
18.9 16.5
17.1 13.4
14.4 10.7
8.2 -0.4
-10.3
-18.8
-31.4
-47.9
Leq,d
24.0 -26.4
-20.4
-16.4
-3.4
1.6 -4.4
3.6 5.5
4.5 6.5
6.5 8.4
9.4 10.4
14.3 16.1
12.0 13.9
15.0 12.7
13.2 9.5
9.3 5.5
2.7 -6.4
-17.5
-27.9
-43.0
-62.9
Leq,d
22.0 -28.6
-22.8
-19.0
-6.3
-1.5
-7.7
0.2 1.9
0.7 2.4
2.3 4.0
4.6 5.3
8.8 14.2
11.2 13.7
14.6 11.9
12.0 7.6
6.6 1.6
-3.1
-14.9
-29.7
-45.3
-67.3
-95.6
Leq,d
21.4 -25.4
-19.6
-15.8
-3.0
1.7 -4.5
3.3 5.0
3.7 5.4
5.2 6.9
7.7 8.3
11.9 13.4
10.2 11.6
12.3 9.4
9.3 4.7
3.6 -1.4
-5.5
-16.1
-28.6
-40.4
-57.2
-78.9
Leq,d
27.6 -23.2
-17.2
-13.2
-0.2
4.8 -1.2
6.8 8.7
7.7 9.7
9.7 11.7
12.6 13.6
18.0 19.8
15.8 17.7
18.7 16.4
17.0 13.3
13.4 10.0
8.0 0.0
-9.4
-17.3
-29.2
-45.1
Leq,d
15.9 -34.4
-28.4
-24.4
-11.4
-6.5
-12.5
-4.5
-2.6
-3.7
-1.7
-1.8
0.1 1.0
1.9 5.8
7.4 5.4
7.0 7.9
5.0 4.7
-0.4
-2.6
-9.4
-16.7
-32.6
-53.3
-77.1
Leq,d
25.6 -25.6
-19.6
-15.6
-2.6
2.4 -3.6
4.4 6.4
5.3 7.3
7.4 9.3
10.3 11.3
15.3 17.2
13.7 15.7
16.9 14.7
15.4 11.8
12.0 8.6
6.6 -1.5
-10.8
-19.6
-33.7
-52.2
Leq,d
28.3 -17.6
-16.4
-12.4
0.6 5.6
-0.4
7.7 9.6
8.6 10.5
10.5 12.5
13.5 14.4
18.4 20.5
16.4 18.3
19.4 17.1
17.7 14.1
14.3 11.1
9.2 1.4
-7.6
-15.0
-26.3
-41.3
Leq,d
29.6 -20.4
-14.3
-10.4
2.6 7.6
1.6 9.8
11.7 10.6
12.4 12.4
14.3 15.2
16.2 20.0
21.8 17.6
19.4 20.4
17.9 18.4
14.7 14.7
11.4 9.4
1.8 -6.8
-13.6
-23.8
-37.5
Leq,d
29.7 -21.5
-15.5
-11.5
1.5 6.5
0.5 8.7
10.6 9.6
11.4 11.5
13.5 14.5
15.5 19.5
21.6 17.5
19.5 20.8
18.6 19.4
16.0 16.5
13.7 12.3
5.3 -2.7
-8.8
-18.1
-30.5
Leq,d
32.4 -18.7
-12.7
-8.7
4.3 9.3
3.3 11.6
13.6 12.5
14.2 14.3
16.2 17.2
18.2 22.2
24.2 20.1
22.1 23.3
21.3 22.1
18.8 19.3
16.6 15.4
8.8 1.3
-4.0
-12.5
-24.0
Leq,d
29.1 -22.3
-16.2
-12.2
0.8 5.7
-0.3
7.8 9.8
8.7 10.7
10.7 12.7
13.7 14.7
19.2 21.1
17.1 19.0
20.2 18.0
18.7 15.3
15.6 12.5
10.8 3.3
-5.2
-12.1
-22.6
-36.6
Leq,d
27.8 -22.8
-16.8
-12.8
0.1 5.1
-1.0
7.1 9.0
7.8 9.7
9.7 11.5
12.4 13.2
18.4 20.6
16.4 18.0
18.9 16.4
16.7 12.6
12.2 8.2
7.5 -1.4
-11.8
-20.8
-33.6
-50.2
Leq,d
27.8 -24.6
-18.5
-14.6
-1.6
3.4 -2.6
5.4 7.4
6.3 8.3
8.3 10.3
12.6 13.6
17.5 20.3
16.4 18.2
19.3 17.0
17.5 13.6
13.5 9.7
7.1 -1.5
-11.6
-20.5
-33.6
-50.7
Leq,d
23.3 -26.8
-20.8
-16.8
-3.8
1.1 -4.9
3.1 5.1
4.0 6.0
6.0 7.9
8.9 9.8
13.7 15.5
11.4 13.2
14.5 12.0
12.4 8.4
8.0 3.8
0.7 -8.9
-20.6
-31.7
-47.8
-68.8
Leq,d
28.5 -23.1
-17.1
-13.1
-0.1
4.9 -1.1
6.9 8.9
7.8 9.8
9.8 11.8
12.7 13.7
17.6 20.8
16.7 18.6
19.8 17.5
18.2 14.6
14.8 11.5
9.5 1.4
-8.4
-16.9
-29.1
-45.1
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 4 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Leq,d
24.8 -26.0
-20.0
-16.0
-3.0
1.9 -4.1
4.0 5.9
4.8 6.8
6.9 8.8
9.8 10.8
14.7 16.6
13.2 15.1
16.2 13.9
14.4 10.6
10.4 6.6
3.8 -5.2
-15.9
-25.9
-40.5
-59.6
Leq,d
27.2 -24.0
-18.0
-14.0
-1.0
3.9 -2.1
6.0 7.9
6.9 8.9
8.9 10.9
11.8 13.5
17.3 19.6
15.5 17.3
18.4 16.1
16.6 12.9
13.0 9.5
7.3 -0.9
-10.5
-18.9
-31.3
-47.8
Receiver R3 Fl G Lr,lim dB(A) Leq,d 42.5 dB(A)
Leq,d
11.9 -0.5
5.5 -6.6
-0.4
3.5 7.8
1.9 -18.3
-69.2
Leq,d
5.6 -3.7
2.0 -9.1
-3.9
-4.5
-2.8
-6.4
-30.6
-91.8
Leq,d
4.3 -4.4
1.0 -10.3
-5.7
-6.2
-4.6
-9.1
-34.0
-92.1
Leq,d
4.1 -4.2
1.4 -10.2
-8.4
-5.8
-6.8
-9.8
-35.1
-86.9
Leq,d
5.1 -3.6
2.1 -9.0
-5.9
-3.4
-5.1
-14.7
-38.6
-91.6
Leq,d
12.6 -1.4
4.3 -7.9
0.3 6.1
8.9 2.6
-17.7
-69.6
Leq,d
2.1 -7.3
-1.8
-14.4
-12.7
-7.7
-3.9
-10.5
-30.7
-67.6
Leq,d
17.2 0.3
9.4 -0.7
7.1 11.7
12.3 7.1
-8.0
-46.5
Leq,d
18.0 2.7
10.9 -0.6
7.0 12.2
13.1 7.4
-9.1
-49.4
Leq,d
18.0 2.2
10.6 -0.4
6.9 12.6
13.1 7.4
-9.2
-50.7
Leq,d
21.4 3.8
14.5 5.0
11.3 15.5
16.1 11.5
-1.6
-34.5
Leq,d
-1.4
-9.4
-3.8
-14.5
-12.6
-12.2
-13.8
-23.9
-49.0
Leq,d
4.5 -4.4
2.6 -11.5
-8.5
-6.6
-8.0
-15.0
-32.1
-73.0
Leq,d
-4.0
-11.5
-6.6
-18.3
-16.8
-13.7
-14.9
-23.0
-42.5
-89.0
Leq,d
-1.8
-10.0
-4.3
-14.8
-13.1
-12.1
-14.1
-23.6
-46.5
Leq,d
-7.7
-14.6
-9.9
-20.7
-19.3
-21.4
-23.3
-31.5
-55.0
Leq,d
20.6 5.3
14.1 3.0
10.6 14.5
15.1 10.7
-1.3
-29.8
Leq,d
5.3 -3.7
2.1 -7.7
-5.8
-3.5
-4.8
-10.6
-36.6
-93.8
Leq,d
8.1 -2.1
4.3 -8.8
-5.6
-1.2
2.2 -6.0
-28.2
-77.5
Leq,d
9.9 -0.4
6.2 -6.5
-2.4
1.5 3.3
-4.5
-26.3
-77.5
Leq,d
10.4 -0.2
6.6 -4.8
-1.6
2.4 3.5
-3.6
-24.8
-76.1
Leq,d
16.2 1.4
7.7 -5.2
5.7 10.8
11.3 7.0
-7.5
-44.3
Leq,d
16.3 -31.8
-25.8
-21.8
-8.9
-3.9
-10.0
-2.0
-0.1
-1.3
0.6 0.5
2.3 3.1
3.9 7.6
9.1 4.6
6.0 6.6
3.5 3.2
-1.8
-3.6
-9.5
-15.3
-28.7
-45.5
-63.7
-89.0
Leq,d
19.8 -30.9
-24.8
-20.8
-7.8
-2.9
-8.9
-0.9
1.1 0.0
2.0 2.0
3.9 4.9
5.9 9.8
11.5 7.4
10.2 11.3
8.7 9.0
6.8 5.8
0.8 -3.8
-15.8
-30.8
-46.6
-69.0
-98.0
Leq,d
18.8 -27.8
-22.0
-18.2
-5.3
-0.6
-6.7
1.1 2.9
1.6 3.3
3.2 4.9
5.7 6.4
10.0 11.4
6.9 8.3
8.8 5.8
5.6 0.8
2.1 -3.3
-8.3
-20.3
-34.9
-49.4
-69.5
-95.2
Leq,d
16.4 -32.1
-26.1
-22.1
-9.2
-4.2
-10.3
-2.3
-0.4
-1.5
0.4 0.4
2.2 3.0
3.9 7.6
9.1 4.7
6.2 6.9
3.9 3.6
-1.3
-3.0
-9.0
-15.0
-28.5
-45.7
-64.5
-90.6
Leq,d
24.1 -29.4
-23.3
-19.3
-6.3
-1.3
-7.3
0.7 2.7
1.7 3.7
3.8 5.9
6.9 8.1
12.2 14.2
10.5 14.8
16.5 14.8
15.7 11.6
10.8 6.2
2.1 -8.8
-22.4
-36.1
-55.7
-81.1
Leq,d
21.5 -25.1
-19.2
-15.4
-2.5
2.2 -4.0
3.8 5.5
4.2 5.6
5.5 7.2
8.1 8.8
12.5 14.1
9.6 11.1
11.8 8.9
8.9 4.4
3.5 -0.6
-4.5
-15.2
-27.8
-40.0
-57.3
-79.6
Leq,d
16.8 -29.0
-23.2
-19.5
-6.8
-2.1
-8.3
-0.6
1.1 -0.2
1.4 1.2
3.0 3.8
4.5 8.1
9.6 5.0
6.4 7.0
3.9 3.5
-1.5
-3.1
-9.0
-14.5
-27.5
-43.7
-61.1
-85.3
Leq,d
23.1 -30.8
-24.8
-20.8
-7.8
-2.8
-8.7
-0.6
1.4 0.4
2.5 2.6
4.8 6.0
7.3 11.7
14.2 11.2
14.8 15.8
13.2 13.4
9.0 8.0
2.9 -1.8
-13.8
-28.8
-44.7
-67.2
-96.3
Leq,d
26.1 -25.7
-19.7
-15.7
-2.7
2.3 -3.7
4.1 6.0
5.0 6.0
6.0 7.9
9.4 10.3
14.2 16.7
12.6 15.7
19.0 17.1
17.4 13.3
12.8 8.3
4.5 -6.0
-19.0
-31.9
-50.6
-74.7
Leq,d
16.4 -31.6
-25.6
-21.6
-8.6
-3.7
-9.8
-1.8
0.1 -1.1
0.8 0.7
2.5 3.3
4.1 7.7
9.2 4.7
6.1 6.7
3.6 3.2
-1.7
-3.4
-9.3
-15.0
-28.2
-44.7
-62.5
-87.3
Leq,d
19.1 -30.9
-24.8
-20.8
-7.8
-2.9
-8.9
-0.9
1.1 0.0
2.0 2.0
3.9 4.9
5.8 9.7
11.5 7.4
9.2 10.2
7.7 8.0
3.7 2.8
-2.1
-6.7
-18.5
-33.4
-46.7
-69.1
-98.1
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 5 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Leq,d
20.1 -26.8
-20.9
-17.1
-4.3
0.4 -5.8
1.9 3.6
2.3 3.8
3.6 5.3
6.1 6.7
10.3 11.8
7.2 10.2
10.9 8.0
10.1 5.4
3.9 -1.7
-7.1
-19.5
-34.3
-48.7
-68.4
-93.6
Leq,d
24.5 -23.3
-17.3
-13.4
-0.4
4.5 -1.6
6.3 8.1
6.9 8.0
7.9 9.7
10.8 11.5
15.2 17.1
12.7 14.4
15.1 12.3
12.3 7.9
7.2 2.7
-0.7
-10.4
-22.0
-32.9
-48.6
-68.9
Leq,d
30.1 -20.7
-14.7
-10.7
2.3 7.2
1.2 9.5
11.4 10.3
12.2 12.2
14.2 15.1
16.1 20.1
22.0 17.9
19.9 21.0
18.8 19.8
16.3 16.5
13.5 11.8
4.5 -3.8
-10.3
-20.3
-33.8
Leq,d
30.0 -16.1
-14.8
-10.9
2.1 7.1
1.1 9.3
11.2 10.2
12.0 12.1
14.0 15.0
16.0 19.9
21.9 17.8
19.8 20.9
18.7 19.6
16.1 16.5
13.4 11.8
4.4 -3.9
-10.4
-20.5
-34.0
Leq,d
27.5 -22.4
-16.4
-12.4
0.6 5.5
-0.5
7.6 9.5
8.4 10.3
10.3 12.2
13.1 14.0
17.8 19.6
15.3 17.2
18.1 16.5
16.9 12.8
12.5 8.6
6.0 -2.4
-11.9
-19.9
-31.6
-47.1
Leq,d
22.5 -24.9
-19.1
-15.3
-2.5
2.3 -3.9
3.9 5.6
4.4 6.0
5.8 7.5
8.3 8.9
12.5 14.0
11.0 12.7
13.8 11.6
11.7 7.2
6.1 1.1
-3.2
-14.0
-26.6
-38.1
-54.0
-74.6
Leq,d
34.1 -19.4
-13.3
-9.3
3.7 8.7
2.7 11.0
13.0 12.0
13.8 13.9
15.9 17.0
18.2 22.3
24.5 20.7
23.1 24.9
23.6 25.9
22.6 23.1
20.4 19.1
12.3 4.6
-1.1
-10.0
-22.1
Leq,d
34.1 -19.4
-13.4
-9.4
3.6 8.6
2.6 10.9
12.9 11.9
13.7 13.8
15.9 17.0
18.1 22.2
24.4 20.8
23.3 25.0
23.8 25.9
22.6 23.1
20.3 19.0
12.1 4.4
-1.3
-10.2
-22.4
Leq,d
30.0 -24.8
-18.7
-14.7
-1.7
3.4 -2.6
5.6 7.6
6.7 8.9
9.3 11.6
13.1 14.9
19.5 22.5
18.4 20.4
21.6 19.3
19.9 16.2
16.3 12.8
10.5 2.1
-7.9
-16.9
-30.2
-47.7
Leq,d
17.1 -31.5
-25.5
-21.5
-8.5
-3.6
-9.6
-1.6
0.3 -0.8
1.1 1.0
2.9 3.7
4.6 8.3
9.9 5.5
7.0 7.7
4.8 4.6
-0.2
-1.8
-7.5
-13.1
-26.1
-42.4
-60.0
-84.6
Leq,d
22.5 -28.8
-22.7
-18.7
-5.7
-0.8
-6.7
1.3 3.2
2.2 4.2
4.3 6.2
7.2 8.3
12.3 14.2
10.2 12.6
13.8 11.6
12.4 8.9
9.3 6.3
2.9 -7.4
-20.2
-33.1
-51.6
-75.6
Leq,d
27.2 -20.7
-14.8
-11.0
1.8 6.6
0.4 8.4
10.1 8.9
10.5 10.5
12.3 13.2
14.1 17.8
19.6 15.3
16.9 17.8
15.3 15.6
11.6 11.4
7.8 5.4
-2.9
-12.4
-20.4
-32.2
-47.8
Leq,d
19.1 -30.8
-24.7
-20.8
-7.8
-2.8
-8.8
-0.8
1.1 0.1
2.0 2.0
4.0 4.9
5.9 9.8
11.5 7.3
9.1 10.2
7.6 7.8
3.5 2.6
-2.4
-6.9
-18.9
-33.9
-49.9
-72.3
Leq,d
25.7 -28.2
-22.1
-18.1
-5.1
-0.1
-6.0
2.1 4.1
3.1 5.2
5.4 7.5
8.8 10.2
14.6 17.2
14.3 16.8
17.9 15.5
16.0 12.0
11.7 7.5
4.1 -5.9
-18.3
-30.5
-48.1
-71.0
Leq,d
18.1 -28.4
-22.5
-18.7
-5.9
-1.2
-7.5
0.1 1.8
0.5 1.9
1.8 3.5
4.4 5.1
8.7 10.3
5.8 7.2
9.3 6.3
6.9 1.9
0.1 -5.8
-11.8
-25.1
-41.3
-58.3
-81.8
Leq,d
24.8 -28.6
-22.6
-18.6
-5.6
-0.6
-6.5
1.5 3.5
2.5 4.6
4.7 6.8
8.0 9.2
13.5 15.8
12.3 15.3
17.4 15.0
15.4 11.5
11.2 6.8
7.2 -3.1
-15.8
-28.6
-47.0
-70.9
Leq,d
20.6 -25.5
-19.7
-15.9
-3.1
1.6 -4.6
3.1 4.9
3.6 5.0
4.8 6.5
7.3 7.9
11.4 12.9
8.3 9.6
11.7 8.7
8.5 3.8
2.5 -2.7
-7.1
-17.8
-30.5
-42.7
-60.1
-82.5
Leq,d
22.6 -26.9
-20.9
-17.0
-4.1
0.8 -5.2
2.5 4.4
3.2 4.3
4.2 6.1
7.2 8.1
11.8 13.8
10.1 14.0
14.9 12.2
12.3 7.9
6.9 1.8
-2.8
-14.5
-28.8
-43.5
-64.1
-90.7
Leq,d
20.0 -28.3
-22.2
-18.3
-5.3
-0.4
-6.4
1.6 3.4
2.3 4.2
4.1 5.9
6.7 7.5
11.1 12.7
8.2 9.7
10.3 7.4
7.3 2.8
1.7 -3.2
-7.3
-18.1
-31.3
-44.3
-62.8
-86.6
Leq,d
17.5 -29.1
-23.2
-19.4
-6.6
-1.8
-8.0
-0.3
1.4 0.1
1.6 1.4
3.2 4.0
4.7 8.3
9.8 5.2
6.6 8.6
5.6 5.3
1.8 0.2
-5.6
-11.6
-25.5
-42.4
-60.0
-84.0
Leq,d
25.3 -23.8
-17.8
-13.9
-0.9
4.0 -2.0
5.8 7.7
6.6 7.5
7.4 9.2
10.5 11.2
14.9 18.2
13.9 15.5
16.4 13.9
14.3 10.5
10.4 6.0
2.2 -8.2
-20.8
-33.2
-50.5
-72.5
Leq,d
17.9 -29.9
-23.9
-19.9
-6.9
-2.0
-8.1
-0.1
1.7 0.5
2.4 2.2
3.9 4.7
5.4 8.9
10.3 5.7
7.1 9.0
6.0 5.6
0.7 -1.0
-6.4
-11.8
-24.1
-38.8
-54.0
-75.2
Leq,d
16.1 -30.3
-24.4
-20.6
-7.8
-3.0
-9.2
-1.4
0.4 -0.9
0.8 0.7
2.4 3.2
3.9 7.5
8.9 4.3
5.7 6.2
3.1 2.6
-2.4
-4.2
-9.1
-15.4
-29.0
-45.7
-63.6
-88.5
Leq,d
26.0 -22.0
-16.2
-12.4
0.4 5.2
-0.9
7.0 8.8
7.6 9.3
9.2 11.0
11.9 12.7
16.4 18.1
13.7 15.7
16.4 15.3
15.5 11.3
10.7 6.4
3.3 -5.8
-16.0
-24.8
-37.6
-54.3
Leq,d
25.4 -21.7
-15.9
-12.1
0.7 5.5
-0.7
7.2 8.9
7.7 9.3
9.2 11.0
11.8 12.6
16.3 18.0
13.6 15.1
15.9 13.1
13.3 9.2
8.7 4.8
2.1 -6.6
-16.8
-25.6
-38.4
-55.2
Leq,d
26.2 -24.6
-18.6
-14.6
-1.6
3.4 -2.6
5.4 7.3
6.3 8.3
8.3 10.3
11.3 12.3
16.2 18.1
14.0 16.2
17.4 15.1
15.8 12.2
12.3 8.9
6.8 -1.4
-11.0
-19.5
-32.1
-48.8
Leq,d
15.9 -32.6
-26.6
-22.6
-9.6
-4.7
-10.7
-2.7
-0.8
-2.0
0.0 -0.1
1.7 2.6
3.4 7.1
8.6 4.2
5.7 6.4
3.4 3.0
-2.0
-3.9
-10.1
-16.3
-30.2
-48.1
-67.7
-94.9
Leq,d
16.2 -31.9
-25.9
-21.9
-9.0
-4.1
-10.1
-2.1
-0.3
-1.4
0.4 0.3
2.1 2.9
3.6 7.2
8.7 4.1
5.5 7.6
4.5 4.0
-1.2
-3.2
-9.7
-15.9
-29.6
-46.7
-65.2
-90.7
Leq,d
25.3 -25.3
-19.3
-15.3
-2.3
2.7 -3.3
4.7 6.6
5.6 7.6
7.6 9.6
10.6 11.5
15.5 17.3
13.2 15.4
16.5 14.2
14.8 11.1
11.1 7.5
5.0 -3.6
-13.8
-23.1
-36.8
-54.9
Leq,d
24.3 -27.2
-21.2
-17.2
-4.2
0.8 -5.2
2.8 4.7
3.7 5.7
5.7 7.7
8.6 9.6
13.6 16.8
12.7 14.6
15.8 13.5
14.1 10.3
10.1 6.3
3.4 -6.2
-18.2
-29.5
-45.7
-66.7
Leq,d
26.2 -26.0
-20.0
-16.0
-3.0
2.0 -4.0
4.0 5.9
4.9 6.9
6.9 8.9
9.8 10.8
16.5 18.4
14.3 16.3
17.5 15.3
16.0 12.5
12.8 9.3
6.3 -3.1
-14.3
-24.8
-39.7
-59.0
Leq,d
23.8 -27.6
-21.6
-17.6
-4.6
0.3 -5.7
2.3 4.3
3.2 5.2
5.2 7.2
8.2 9.1
13.1 16.3
12.3 14.2
15.3 12.9
13.4 9.5
9.2 5.4
2.1 -7.6
-20.1
-32.1
-49.2
-71.2
Leq,d
17.7 -30.3
-24.3
-20.3
-7.4
-2.5
-8.5
-0.5
1.3 0.1
2.0 1.9
3.6 4.4
5.1 8.7
10.2 5.6
7.0 8.8
5.8 5.4
0.4 -1.3
-7.1
-12.5
-24.8
-40.0
-55.8
-77.8
Leq,d
25.7 -23.7
-17.8
-13.9
-1.0
3.8 -2.4
5.4 7.1
5.8 7.0
6.8 8.5
9.4 10.1
13.7 19.0
14.7 16.3
17.2 14.7
14.9 10.8
10.2 5.9
2.3 -7.9
-20.4
-32.6
-49.8
-71.5
Leq,d
19.0 -28.2
-22.4
-18.6
-5.8
-1.0
-7.2
0.6 2.3
1.1 2.7
2.5 4.3
5.0 5.6
9.2 10.6
7.4 8.9
11.0 8.1
7.8 2.8
1.1 -4.9
-10.5
-23.0
-37.9
-52.9
-73.8
Leq,d
16.2 -30.3
-24.5
-20.7
-7.8
-3.0
-9.2
-1.4
0.4 -0.8
0.9 0.8
2.5 3.2
3.9 7.5
8.9 4.4
5.7 6.2
3.9 3.4
-1.8
-3.7
-8.9
-15.2
-28.7
-45.3
-63.0
-87.6
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 6 170 Units Date Palm Dr Cathedral City Noise
Contribution spectra
-
001
-
Date Palm Apartments: Outdoor SP
23 Time
slice
Sum
dB(A)
25Hz
dB(A)
31.5Hz
dB(A)
40Hz
dB(A)
50Hz
dB(A)
63Hz
dB(A)
80Hz
dB(A)
100Hz
dB(A)
125Hz
dB(A)
160Hz
dB(A)
200Hz
dB(A)
250Hz
dB(A)
315Hz
dB(A)
400Hz
dB(A)
500Hz
dB(A)
630Hz
dB(A)
800Hz
dB(A)
1kHz
dB(A)
1.25kHz
dB(A)
1.6kHz
dB(A)
2kHz
dB(A)
2.5kHz
dB(A)
3.15kHz
dB(A)
4kHz
dB(A)
5kHz
dB(A)
6.3kHz
dB(A)
8kHz
dB(A)
10kHz
dB(A)
12.5kHz
dB(A)
16kHz
dB(A)
20kHz
dB(A)
Leq,d
17.8 -30.1
-24.1
-20.1
-7.1
-2.2
-8.3
-0.3
1.5 0.3
2.2 2.0
3.8 4.5
5.2 8.8
10.2 5.6
6.9 8.8
5.8 5.4
0.5 -1.2
-7.0
-12.3
-24.6
-39.5
-55.0
-76.5
Leq,d
16.1 -30.2
-24.4
-20.6
-7.8
-3.0
-9.2
-1.4
0.4 -0.9
0.8 0.6
2.4 3.1
3.8 7.4
8.9 4.3
5.7 6.2
3.1 2.6
-2.4
-4.2
-9.3
-15.6
-29.2
-46.1
-64.3
-89.5
Leq,d
30.1 -23.8
-17.8
-13.8
-0.8
4.2 -1.7
6.3 8.3
7.3 9.4
9.6 11.7
12.8 14.1
18.3 20.6
17.2 20.1
22.6 20.4
21.0 17.4
17.6 14.3
12.2 4.2
-5.3
-13.4
-25.7
-42.0
SoundPLAN 9.0
MD Acoustics 1197 E Los Angeles Ave,Unit C 256 Simi Valley, CA 93065 USA 7 Project: Sound Library
Job Number: 0000-2020-02
Site Address/Loca on: Gilbert, AZ
Date: 09/18/2018
Field Tech/Engineer: Robert Pearson
Source/System: Carrier 50TFQ0006 - 5 Ton
General Loca on: Measured @ 3'
Sound Meter: NTi XL2 SN: A2A-05967-E0
Se ngs: A-weighted, slow, 1-sec, 10-sec dura on
Meteorological Cond.: 90 degrees, 0 mph wind
Table 1: Summary Measurement Data
Figure 1: Commercial Air Condi oner - Carrier 50TFQ0006 - 5 Ton Acous c Spectrum - Carrier 50TFQ0006 - 5 Ton
Site Observa ons:
Clear sky, measurements were performed at 3 from source.
Leq LminLmax
67.766.968.5
Ln 2 Ln 8Ln 25Ln 50Ln 90Ln 99
0.0 0.0 0.0 0.0 0.0 0.0
Source/System Overall Source Overall
dB(A)
3rd Octave Band Data (dBA)
20 25 31.540 50 63 80 1001251602002503154005006308001k 12.5k1.6k2k 2.5k3.15k4k 5k 6.3k8k 10k12.5k16k20k Carrier 50TFQ0006 - 5 Ton HVAC 67.7 11.014.020.024.037.042.036.047.049.048.050.050.052.053.054.058.059.055.057.058.056.057.054.055.053.053.048.043.041.037.031.0 20 40 63 125 250 500 1k 2k 4k 8k 16k
Freq (Hz)
0 10
20 30
40 50
60 Sound Pressure Level, dBA
www.mdacoustics.com
AZ Office
4960 S. Gilbert Rd, Ste 1-461
Chandler, AZ 85249
p. (602) 774-1950
CA Office
1197 Los Angeles Ave, Ste C-256
Simi Valley, CA 93065
p. (805) 426-4477
Project: Car idle Ref Level Site Observations:
Site Location: Gilbert, AZ
Date: 9/18/2018
Field Tech/Engineer: Robert Pearson
Source/System: Hyundai Sonata
Location: Parking Lot
Sound Meter: NTi XL2 SN: A2A-05967-E0
Settings: A-weighted, slow, 1-sec, 10-sec duration
Meteorological Cond.: 90 degrees F, 0 mph wind
20 25 32 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1.25K 1.6K 2K 2.5K3.15K 4K 5K 6.3K 8K 10K 12.5K 16K 20K Hyundai Sonata Motor/Tailpipe 58.7 13 32 15 21 36 37 39 37 41 38 44 39 41 45 45 49 47 47 48 46 49 50 47 45 42 39 37 34 32 30 29 Clear sky, measurements were performed at 3ft of source. Two measurments taken one in the front and one in the back and then Averaged out.
Table 1: Summary Measurement Data
Source System Overall
dB(A)
3rd Octave Band Data (dBA)
Figure 1: Example Measurement Position
0 10
20 30
40 50
60dBA
Freq (Hz)
Car @ 3ft
Car Idle Data Sheet