Brentwood City Council
April 28, 2026

From: L G
To: webCityClerk
Subject: Request for extended time during public forum tonight April 28th, 2026 Date: Tuesday, April 28, 2026 10:22:39 AM
Attachments: Gmail - Re_ Second Notice and Immediate...pdf Brentwood Chandler - 2016-037 Orfanos Residential Development Noise Study - V4 - 10-28-16 - 2.pdf Dear City Clerk,
I am writing to formally request to provide public comment at tonight's Brentwood City Council meeting on Tuesday, April 28, 2026, regarding ongoing noise, vibration, and air quality conditions at the WinCo Foods loading dock at 6700 Lone Tree Way and its impact on the Chandler Drive neighborhood.

Given the complexity and seriousness of this matter, which involves documented public health impacts, California Air Resources Board standards, prior environmental findings from the entitlement process, and a formal set of three demands I will be presenting to Council, I am respectfully requesting approximately 10 minutes of speaking time.

Several of my neighbors from Chandler Drive will also be in attendance in support of this matter, and some may wish to provide their own brief public comment in addition to mine.

Please let me know if there is any additional information needed in advance, or any procedural step I should complete before the meeting begins. I plan to arrive at City Hall at 6:45 PM to fill out a speaker card and check in.

For the record, please find attached my prior correspondence with Code Enforcement dated April 8, 2026, and the full acoustical report prepared in connection with the development of our neighborhood. I respectfully ask that these be included in the public record for tonight's meeting.

Thank you for your time and consideration.

Sincerely,
Likica

Environmental Noise Assessment
Orfanos Residential Development

Brentwood, California
BAC Job # 2016-037
Prepared For:

Richland Real Estate Fund, LLC.

Mr. Aaron Ross-Swain
801 Ygnacio Valley Rd., Ste. 110
Walnut Creek, CA 94596
Prepared By:

Bollard Acoustical Consultants, Inc.

Paul Bollard, President
October 28, 2016
3551 Bankhead Road  Loomis, CA 95650  Phone: (916) 663-0500  Fax: (916) 663-0501  BACNOISE.COM Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Introduction
The proposed Orfanos Residential Development (project) is a single-family residential development located at 2800 Empire Avenue in the City of Brentwood, California. The project proposes to construct 160 homes on a 20-acre site that currently comprises mostly undeveloped land, with primarily residential and commercial uses nearby. Existing non-operational Union Pacific Railroad (UPRR) tracks are located adjacent to the east of the project site. Figures 1 and 2 show the project area and site plan, respectively.

Due to the potential for elevated traffic, railroad, and commercial noise levels at the project site, Bollard Acoustical Consultants, Inc. (BAC) was retained to prepare this noise analysis.

Specifically, the purposes of this study are to quantify noise generated by traffic on Empire Avenue to the west, potential future operations on the adjacent UPRR tracks to the east, and loading dock operations at the WinCo Foods located to the south, and to compare those noise levels against the applicable City of Brentwood noise standards for new residential developments. In addition, this analysis evaluates potential impacts associated with off-site increases in traffic noise and construction noise resulting from the proposed project.

Noise Fundamentals and Terminology
Noise is often described as unwanted sound. Sound is defined as any pressure variation in air that the human ear can detect. If the pressure variations occur frequently enough (at least 20 times per second), they can be heard, and thus are called sound. Measuring sound directly in terms of pressure would require a very large and awkward range of numbers. To avoid this, the decibel scale was devised. The decibel scale allows a million-fold increase in pressure to be expressed as 120 dB. Another useful aspect of the decibel scale is that changes in levels (dB) correspond closely to human perception of relative loudness. Appendix A contains definitions of Acoustical Terminology. Figure 3 shows common noise levels associated with various sources.

The perceived loudness of sounds is dependent upon many factors, including sound pressure level and frequency content. However, within the usual range of environmental noise levels, perception of loudness is relatively predictable, and can be approximated by weighing the frequency response of a sound level meter by means of the standardized A-weighing network.

There is a strong correlation between A-weighted sound levels (expressed as dBA) and community response to noise. For this reason, the A-weighted sound level has become the standard tool of environmental noise assessment. All noise levels reported in this section are in terms of A-weighted levels in decibels.

Community noise is commonly described in terms of the “ambient” noise level, which is defined as the all-encompassing noise level associated with a given noise environment. A common statistical tool to measure the ambient noise level is the average, or equivalent, sound level (Leq) over a given time period (usually one hour). The Leq is the foundation of the Day-Night Average Level noise descriptor, Ldn, and shows very good correlation with community response to noise.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

The Day-Night Average Level (Ldn) is based upon the average noise level over a 24-hour day, with a +10 decibel weighing applied to noise occurring during nighttime (10:00 p.m. to 7:00 a.m.) hours. The nighttime penalty is based upon the assumption that people react to nighttime noise exposures as though they were twice as loud as daytime exposures. Because Ldn represents a 24-hour average, it tends to disguise short-term variations in the noise environment. Ldn-based noise standards are commonly used to assess noise impacts associated with traffic, railroad and aircraft noise sources.

Figure 3
Noise Levels Associated with Common Noise Sources
Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Criteria for Acceptable Noise Exposure
City of Brentwood General Plan
Transportation Noise Standards
The Noise Element of the City of Brentwood General Plan establishes a land use compatibility criterion of 60 dB Ldn or less within outdoor activity areas of new residential land uses impacted by transportation noise sources (e.g. traffic noise, railroad noise). The intent of this standard is to provide an acceptable noise environment for outdoor activities. This standard is applied at the backyard areas of proposed residences. For neighborhood parks such as the park and paseo proposed, the City of Brentwood establishes a higher exterior noise level standard of 65 dB Ldn.

An interior noise level limit of 45 dB Ldn is applied to all new residential construction. The intent of this standard is to provide a suitable environment for indoor communication and sleep.

In addition of the exterior and interior noise level standards, the City of Brentwood also provides the following criteria to determine the significance of transportation noise impacts:
 Where existing traffic noise levels are less than 60 dB Ldn at the outdoor activity areas of noise-sensitive uses, a +5 dB Ldn increase in roadway noise levels will be considered significant;
 Where existing traffic noise levels range between 60 and 65 dB Ldn at the outdoor activity areas of noise-sensitive uses, a +3 dB Ldn increase in roadway noise levels will be considered significant; and
 Where existing traffic noise levels are greater than 65 dB Ldn at the outdoor activity areas of noise-sensitive uses, a + 1.5 dB Ldn increase in roadway noise levels will be considered significant.

Non-Transportation Noise Standards
The Noise Element of the City of Brentwood General Plan provides stationary (non-transportation) noise level standards, which are reproduced below in Table 1. The noise level standards are applied when the receiving land use is zoned residential. In addition, a 5 dB penalty is applied to the standards when the noise source in question is tonal, consists primarily of speech or music, or is a recurring impulsive noise. For this project, the noise standards provided in Table 1 would be applicable to the existing loading dock operations at the WinCo Foods store located immediately south of the proposed development.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Table 1
Stationary (Non-Transportation) Noise Source Standards
City of Brentwood General Plan Noise Element
Land Use Receiving
the Noise
Hourly
Noise-Level
Descriptor
Exterior Noise-Level Standard (dBA)
Daytime (7 am – 10 pm) Nighttime (7 am – 10 pm)
Residential
Leq 55 45
Lmax 70 65
Notes:
a) The residential standards apply to all properties that are zoned for residential use. The exterior noise level standard is to be applied at the property line of the receiving land use or at a designated outdoor activity area (at the discretion of the Community Development Director) of the new development. For mixed-use projects, the exterior noise level standard may be waived (at the discretion of the Community Development Director) if the project does not include a designated activity area and mitigation of property line noise is not practical.

These noise level standards do not apply to residential units established in conjunction with industrial or commercial uses (e.g., caretaker dwellings). The City can impose standards that are more restrictive than specified above based upon determination of existing low ambient noise levels. b) Each of the noise levels specified above shall be lowered by 5 dBA for tonal noises characterized by a whine, screech, or hum, noises consisting primarily of speech or music, or recurring impulsive noises. In no case shall mitigation be required to a level that is less than existing ambient noise levels, as determined through measurements conducted during the same operational period as the subject noise source. c) In situations where the existing noise level exceeds the noise levels indicated in the above table, any new noise source must include mitigation that reduces the noise level of the noise source to the existing level plus 3 dB.
d) Exterior noise exposure level not exceeding 65 dB Ldn is allowed along the State Route 4 corridor, the Union Pacific Railroad corridor, and arterial roadways.

Source: City of Brentwood General Plan (July 22, 2014)
Existing Ambient Noise Environment
To quantify the existing ambient noise environment in the project vicinity, BAC conducted continuous noise level measurements at three locations on the project site from Wednesday, March 2 to Friday, March 4, 2016. The measurement sites are shown in Figure 1. The noise level measurements conducted at Sites A, B, and C on the project site were intended to quantify possible existing noise generation of railroad operations on the UPRR tracks, the loading dock activities at the WinCo Foods store, and traffic on Empire Avenue, respectively. The results of these measurements are shown numerically and graphically in Appendices B and C, respectively, and are summarized in Table 2. Photographs of the noise measurement locations are provided in Appendix D.

Larson Davis Laboratories (LDL) Model 820 and 831 precision integrating sound level meters were used for the noise level measurements. The meters were calibrated before use with an LDL Model CAL200 acoustical calibrator to ensure the accuracy of the measurements. The equipment used meets all pertinent specifications of the American National Standards Institute for Type 1 sound level meters (ANSI S1.4).

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Table 2
Summary of Ambient Noise Level Measurements – March 2-4, 2016 Orfanos Residential Development – City of Brentwood, California Average Noise Level
(dB Leq)
Maximum Noise Level
(dB Lmax)
Day-Night
Average
Date Daytime1 Nighttime2 Daytime1 Nighttime2 (dB Ldn)
Site A – Northeast corner of project site, approximately 150’ from centerline of railroad tracks March 2 – 3 48 44 64 (57-73) 56 (49-64) 52
March 3 – 4 47 41 62 (53-76) 53 (44-76) 50
Site B – Along southern project boundary, adjacent to WinCo Foods loading docks March 2 – 3 49 46 66 (55-76) 63 (49-73) 54
March 3 – 4 48 43 63 (55-70) 61 (54-68) 51
Site C – Southwest corner of project site, approximately 85’ from centerline of Empire Avenue March 2 – 3 59 51 74 (69-90) 68 (63-75) 59
March 3 – 4 60 51 74 (68-88) 70 (65-80) 58
Notes:
1 Daytime hours are 7 AM – 10 PM. 2 Nighttime hours are 10 PM – 7 AM. 3 Detailed noise measurement results are provided in Appendices B and C.

Source: Bollard Acoustical Consultants, Inc. (2016)
The Table 2 data indicate that existing ambient noise levels at the project site comply with the City of Brentwood exterior standard of 60 dB Ldn.

Evaluation of Future Traffic Noise Levels
Traffic Noise Prediction Methodology
The Federal Highway Administration Highway Traffic Noise Prediction Model (FHWA-RD-77-108) was used to predict traffic noise levels at the project site. The model is based upon the CALVENO noise emission factors for automobiles, medium trucks, and heavy trucks, with consideration given to vehicle volume, speed, roadway configuration, distance to the receiver, and the acoustical characteristics of the site. The FHWA Model was developed to predict hourly Leq values for free flowing traffic conditions, and is considered to be accurate within 1.5 dB in most situations.

Predicted Future Traffic Noise Levels at the Project Site The FHWA Model was used with future traffic data obtained from the project traffic study by Fehr & Peers to predict future traffic noise levels at the project site. The FHWA Model inputs are shown in Appendix E, and the results are summarized below in Table 3.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Table 3
Predicted Future Traffic Noise Levels
Orfanos Residential Development – Brentwood, California Roadway Location
Distance from
Centerline (ft) Offset1 Ldn (dB)
Nearest outdoor activity areas 90 67
Empire Avenue First-floor building facades 90 67
Second-floor building facades 90 +3 dB 70
Notes:

1. Offset applied to account for reduced ground absorption of noise at elevated positions.

Source: Bollard Acoustical Consultants, Inc. (2016)
The Table 3 data indicate that future noise levels at the proposed outdoor activity areas nearest to Empire Avenue are predicted to exceed the City of Brentwood standard by approximately 7 dB.

As a result, noise mitigation measures are necessary.

Outdoor Activity Area Noise Mitigation
BAC evaluated the effectiveness of solid noise barriers in reducing future Empire Avenue traffic noise levels for this development. A listing of noise barrier effectiveness algorithm inputs and results is shown in Appendix F, and the results are summarized below in Table 4.

Table 4
Noise Barrier Analysis Results
Orfanos Residential Development – Brentwood, California Roadway Barrier Height (feet) Noise Level, Ldn (dB)2
6 60
Empire Avenue 7 58
8 57
The Table 4 data indicate that a barrier height of 6 feet would be required to reduce future traffic noise levels to 60 dB Ldn or less in the outdoor activity areas of proposed residences nearest to Empire Avenue. The recommended noise barrier locations are shown in Figure 2.

Interior Areas
After construction of the required barrier along Empire Avenue, the exterior traffic noise environment within this development is predicted to be approximately 60 dB Ldn or less at firstfloor facades. Due to reduced ground absorption at elevated positions and lack of shielding by the required noise barrier, noise levels at the upper-floor facades of residences nearest to Empire Avenue are predicted to be approximately 70 dB Ldn. To comply with the City of Brentwood 45 dB Ldn interior standard, noise reductions of 15 dB and 25 dB would be required of the first- and upper-floor building facades, respectively.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Standard residential construction (stucco siding, STC-27 windows, door weather-stripping, exterior wall insulation, composition plywood roof) typically results in an exterior-to-interior noise reduction of about 25 dB with windows closed and approximately 15 dB with windows open.

Therefore, standard construction practices would be adequate for first- and second-floor facades of all residences within this development. However, to provide a greater margin of safety within upper-floor rooms, BAC recommends that all upper-floor windows of residences located along Empire Avenue with a view of the roadway be upgraded to a Sound Transmission Class (STC) rating of 32. The locations of these upgrades are shown in Figure 2.

Evaluation of Future Railroad Noise Levels
Outdoor Activity Areas
Although the UPRR tracks located adjacent to the east of the site are currently non-operational, this analysis utilizes operational data obtained from the City of Brentwood General Plan EIR to ensure that potential future railroad operations do not cause noise impacts at the project site. The General Plan assumes potential future railroad operations on the order of 10 freight train passbys per day, evenly distributed between daytime and nighttime, resulting in a noise level of 67 dB Ldn at a distance of 100 feet from the centerline of the tracks.

The proposed residences nearest to the tracks are located approximately 120 feet from the railroad tracks. At this distance, the railroad noise level would be 66 dB Ldn, which exceeds the City of Brentwood 60 dB Ldn exterior standard. BAC evaluated the effectiveness of solid noise barriers in reducing railroad noise levels at the proposed outdoor activity areas. The results of that analysis indicate that a solid noise barrier with a height of 6 feet would reduce noise levels to 60 dB Ldn or less in the proposed backyards. The recommended noise barrier location is shown in Figure 2.

Interior Areas
As noted previously, standard residential construction results in an exterior-to-interior noise reduction of approximately 25 dB. As a result, standard construction would be sufficient to reduce railroad noise to compliance with the City of Brentwood 45 dB Ldn interior standard. However, to reduce potential sleep disturbances associated with potential future freight train passbys, BAC recommends that all upper-floor windows of proposed residences located nearest to the railroad tracks with a view of the tracks be upgraded to an STC rating of 32. The recommended locations of these window upgrades are shown in Figure 2.

Evaluation of WinCo Foods Operation Noise Levels
Exterior Areas
As indicated in Figure 1, a WinCo Foods grocery store is located immediately south of the proposed project site. BAC staff noted an existing noise barrier separating the project site and the WinCo Foods store. Photographs of the 9-foot tall masonry wall are provided in Appendix D.

Noise-generating sources at the grocery store consist of slow moving heavy-truck passbys, loading dock operations, trash compactors, and exterior mounted truck refrigeration units. In Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

order to quantify the various noise-generating activities of the grocery store, noise level measurements were conducted on the project site, opposite the loading docks at Site B.

Inspection of the detailed summary of collected noise level data at Site B (Table 2, and Appendices B and C), indicate that the noise generation of the WinCo Foods operations is generally in compliance with the City of Brentwood non-transportation exterior noise level standards shown in Table 1. However, the data also indicate that exceedances of the nighttime average and maximum exterior noise level standards of 45 dB Leq and 65 dB Lmax did occur during the noise measurement survey. While the source of these exceedances was not clear, it is possible that they resulted from nighttime truck deliveries at the adjacent Winco Store. If this is the case, 7 of the proposed lots (approximately 4% of the development) located adjacent to the WinCo loading docks would be affected.

Due to the infrequency of these exceedances, the variable nature of the source, and the presence of existing mitigation in the form of a 9-foot barrier, it is unlikely that operations at the WinCo Foods will typically generate noise levels in excess of the City of Brentwood exterior standards at the nearest proposed backyard areas. As a result, significant noise impacts are not predicted.

However, due to the proximity and variability of the noise source, full compliance with the City of Brentwood exterior nighttime noise standards cannot be guaranteed while WinCo continues nighttime truck deliveries. Shifting all deliveries to daytime hours would ensure consistent compliance with the City of Brentwood daytime exterior noise standards at the adjacent residential uses.

Interior Areas
Due to noise reduction provided by standard residential construction, interior noise impacts are not predicted to occur. However, to minimize potential sleep disturbances at the interiors of the proposed residences, BAC recommends that the south-facing windows of the lots nearest to the WinCo Foods grocery store be upgraded from the standard STC-27 windows. Specifically, the south facing windows of Lots 139, 144, 145, 150, 151, 156, 157 should be upgraded to windows with an STC rating of 32 (shown in Figure 2). The purpose of upgrading the windows is to minimize the transmission of unwanted noise levels within the bedrooms of the proposed residences. The prospective buyers of the lots nearest to WinCo Foods should also be provided with disclosure notices notifying them of the potential for short-term increases in noise levels during truck deliveries at the WinCo store to the south.

Evaluation of Off-Site Traffic Noise Level Increases
Construction of this project would result in increased traffic on the local roadway network. BAC utilized the FHWA Model with the traffic study prepared by Fehr & Peers to determine whether traffic noise impacts (by the impact significance criteria listed previously) would occur as a result of this project. The FHWA Model inputs are provided in Appendix G, and the results are shown below in Tables 5 and 6.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

Table 5
Existing vs. Existing Plus Project Traffic Noise Levels, dB Ldn Orfanos Residential Development – Brentwood, California Roadway Segment Existing
Existing +
Project Change
Substantial
Increase?
Empire Avenue North of Neroly Road 63.7 63.8 0.1 No
Empire Avenue Neroly Road to Project Site 64.1 64.2 0.1 No Empire Avenue Project Site to Lone Tree Way 59.9 60.5 0.6 No Empire Avenue South of Lone Tree Way 58.1 58.3 0.2 No
Neroly Road West of Empire Avenue 57.2 57.2 0.0 No
Neroly Road East of Empire Avenue 63.5 63.5 0.0 No
Lone Tree Way West of Empire Avenue 66.2 66.3 0.2 No
Lone Tree Way East of Empire Avenue 65.9 65.9 0.1 No
Sources: FHWA-RD-77-108, project traffic study, and Bollard Acoustical Consultants, Inc.

Table 6
Cumulative vs. Cumulative Plus Project Traffic Noise Levels, dB Ldn Orfanos Residential Development – Brentwood, California Roadway Segment Cumulative
Cumulative
+ Project Change
Substantial
Increase?
Empire Avenue North of Neroly Road 65.7 65.8 0.1 No
Empire Avenue Neroly Road to Project Site 66.1 66.2 0.1 No Empire Avenue Project Site to Lone Tree Way 62.4 62.7 0.3 No Empire Avenue South of Lone Tree Way 62.0 62.1 0.1 No
Neroly Road West of Empire Avenue 59.4 59.4 0.0 No
Neroly Road East of Empire Avenue 64.9 64.9 0.0 No
Lone Tree Way West of Empire Avenue 69.0 69.1 0.1 No
Lone Tree Way East of Empire Avenue 69.0 69.0 0.0 No
Sources: FHWA-RD-77-108, project traffic study, and Bollard Acoustical Consultants, Inc.

The data shown in Tables 5 and 6 indicate that the project-related increase in traffic noise levels on the local roadway network would not be substantial. As a result, no off-site traffic noise impacts are predicted to occur as a result of this project.

Evaluation of Construction Noise Levels
During project construction, heavy equipment would be used for demolition, grading excavation, paving, and building construction, which would increase ambient noise levels when in use. Noise levels would vary depending on the type of equipment used, how it is operated, and how well it is maintained. Noise exposure at any single point outside the project site would also vary depending on the proximity of construction activities to that point. Standard construction equipment, such as graders, backhoes, loaders, and trucks, would be used for this work.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

The range of maximum noise levels for various types of construction equipment at a distance of 50 feet is depicted in Table 7. The noise values represent maximum noise generation, or fullpower operation of the equipment. As one increases the distance between equipment, or increases separation of areas with simultaneous construction activity, dispersion and distance attenuation reduce the effects of combining separate noise sources.

Table 7
Construction Equipment Noise Emission Levels
Equipment
Typical Sound Level (dBA)
50 Feet from Source
Air compressor 81
Backhoe 80
Compactor 82
Concrete mixer 85
Concrete pump 82
Concrete vibrator 76
Crane, mobile 83
Dozer 85
Generator 81
Grader 85
Impact wrench 85
Jackhammer 88
Loader 85
Paver 89
Pneumatic tool 85
Pump 76
Roller 74
Saw 76
Truck 88
Source: Transit Noise and Vibration Impact Assessment, Federal Transit Administration, Table 12-1. (May 2006)
The nearest sensitive receptors to the proposed project are single-family residences located to the north and east of the project site. Construction of the proposed project would expose these sensitive receptors to increased ambient exterior noise levels. As shown in Table 7, outdoor noise levels at noise-sensitive receptors 50 feet from the noise source could reach as high as 89 dBA.

The noise levels from construction operations decrease at a rate of approximately 6 dB per doubling of distance from the source. In addition, a typical building can reduce noise levels by 25 dBA with the windows closed, which would reduce the maximum noise level to 64 dBA.

Noise generated by project construction could exceed the City’s standards for short duration events near residential areas, as listed in Table 7. Therefore, noise mitigation measures should be incorporated to minimize the potential for adverse public reaction to project construction noise.

Because construction would be short-term in duration near any given existing noise-sensitive Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

receptor, significant noise impacts are not anticipated provided the following measures are implemented.
 Project construction activities should be limited to daytime hours unless conditions warrant that certain construction activities occur during evening or early morning hours (i.e. extreme heat).
 All noise-producing project equipment and vehicles using internal-combustion engines shall be equipped with mufflers, air-inlet silencers where appropriate, and any other shrouds, shields, or other noise-reducing features in good operating condition that meet or exceed original factory specifications. Mobile or fixed “package” equipment (e.g., arc welders, air compressors) shall be equipped with shrouds and noise-control features that are readily available for that type of equipment.
 All mobile or fixed noise-producing equipment used on the project site that are regulated for noise output by a federal, state, or local agency shall comply with such regulations while in the course of project activity.  Electrically powered equipment shall be used instead of pneumatic or internalcombustion-powered equipment, where feasible.  Material stockpiles and mobile equipment staging, parking, and maintenance areas shall be located as far as practicable from noise-sensitive receptors.  Construction site and access road speed limits shall be established and enforced during the construction period.
 The use of noise-producing signals, including horns, whistles, alarms, and bells, shall be for safety warning purposes only.
 No project-related public address or music system shall be audible at any adjacent receptor.

Conclusions
The Orfanos Residential Development project site will be exposed to future traffic, railroad, and WinCo loading dock noise levels in excess of the City of Brentwood’s noise standards. As a result, the following noise mitigation measures should be implemented into the project design:

1. Solid noise barriers of 6 feet in height should be constructed at the locations shown in Figure 2.

2. Upper-floor windows of residences nearest to Empire Avenue, the UPRR tracks, and the WinCo loading dock with views of these noise sources should be upgraded to an STC rating of 32. Window upgrade locations are shown in Figure 2.

Bollard Acoustical Consultants, Inc. (BAC)
Environmental Noise Analysis
Orfanos Residential Development – Brentwood, California

These conclusions are based on the measured traffic noise levels and on noise reduction data for standard residential dwellings. Deviations from the project site plan shown in Figure 2 could cause future traffic noise levels to differ from those predicted in this analysis. In addition, Bollard Acoustical Consultants, Inc. is not responsible for degradation in acoustic performance of the residential construction due to poor construction practices, failure to comply with applicable building code requirements, or for failure to adhere to the minimum building practices cited in this report.

This concludes our environmental noise assessment for the Orfanos Residential Development.

Please contact BAC at (916) 663-0500 or [email protected] with comments or questions regarding this evaluation.

Appendix A
Acoustical Terminology
Acoustics The science of sound.

Ambient The distinctive acoustical characteristics of a given space consisting of all noise sources Noise audible at that location. In many cases, the term ambient is used to describe an existing or pre-project condition such as the setting in an environmental noise study.

Attenuation The reduction of an acoustic signal.

A-Weighting A frequency-response adjustment of a sound level meter that conditions the output signal to approximate human response.

Decibel or dB Fundamental unit of sound, A Bell is defined as the logarithm of the ratio of the sound pressure squared over the reference pressure squared. A Decibel is one-tenth of a Bell.

CNEL Community Noise Equivalent Level. Defined as the 24-hour average noise level with noise occurring during evening hours (7 - 10 p.m.) weighted by a factor of three and nighttime hours weighted by a factor of 10 prior to averaging.

Frequency The measure of the rapidity of alterations of a periodic signal, expressed in cycles per second or hertz.

Ldn Day/Night Average Sound Level. Similar to CNEL but with no evening weighting.

Leq Equivalent or energy-averaged sound level.

Lmax The highest root-mean-square (RMS) sound level measured over a given period of time.

Loudness A subjective term for the sensation of the magnitude of sound.

Masking The amount (or the process) by which the threshold of audibility is for one sound is raised by the presence of another (masking) sound.

Noise Unwanted sound.

Peak Noise The level corresponding to the highest (not RMS) sound pressure measured over a given period of time. This term is often confused with the Maximum level, which is the highest RMS level.

RT60 The time it takes reverberant sound to decay by 60 dB once the source has been removed.

Sabin The unit of sound absorption. One square foot of material absorbing 100% of incident sound has an absorption of 1 sabin.

SEL A rating, in decibels, of a discrete event, such as an aircraft flyover or train passby, that compresses the total sound energy of the event into a 1-s time period.

Threshold The lowest sound that can be perceived by the human auditory system, generally of Hearing considered to be 0 dB for persons with perfect hearing.

Threshold Approximately 120 dB above the threshold of hearing. of Pain
Hour Leq Lmax Lmin L02 L08 L25 L50 L90
2:00 PM 48 69 40 55 50 47 45 42
3:00 PM 52 66 46 57 54 52 51 49
4:00 PM 52 70 47 57 54 52 51 50
5:00 PM 54 73 47 60 56 53 51 49
6:00 PM 52 68 47 57 54 53 52 50
7:00 PM 50 63 45 53 52 51 50 48
8:00 PM 49 64 45 52 50 49 48 47
9:00 PM 49 57 45 52 51 50 49 47
10:00 PM 49 64 42 54 51 49 48 46
11:00 PM 45 58 40 50 48 46 45 42
12:00 AM 43 51 35 48 46 43 42 39
1:00 AM 38 49 32 42 41 39 37 34
2:00 AM 40 52 32 47 43 41 39 36
3:00 AM 40 54 33 45 43 41 39 36
4:00 AM 46 61 37 51 49 47 45 39
5:00 AM 45 54 40 50 47 45 44 42
6:00 AM 52 62 44 54 53 52 51 50
7:00 AM 49 65 39 59 52 47 45 42
8:00 AM 45 60 39 53 48 44 43 41
9:00 AM 44 60 36 51 47 45 42 38
10:00 AM 42 61 35 51 45 41 39 37
11:00 AM 44 58 36 52 48 44 41 38
12:00 PM 42 57 36 49 44 42 40 37
1:00 PM 46 70 36 54 47 42 40 38
Daytime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 48 64 41 54 50 47 46 44
High 54 73 47 60 56 53 52 50
Low 42 57 32 49 44 41 39 37
Nighttime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 44 56 37 49 47 45 43 40
High 52 64 44 54 53 52 51 50
Low 38 49 32 42 41 39 37 34
Ldn: 52
Appendix B‐1
Ambient Noise Monitoring Results ‐ Site A
Orfanos Residential Development
Wednesday, March 2 ‐ Thursday, March 3, 2016
Hour Leq Lmax Lmin L02 L08 L25 L50 L90
2:00 PM 48 76 37 52 48 43 41 38
3:00 PM 46 62 37 54 51 46 42 39
4:00 PM 44 61 36 52 48 44 41 38
5:00 PM 49 65 40 56 51 49 47 44
6:00 PM 52 70 47 55 53 52 51 49
7:00 PM 50 64 45 55 52 50 50 48
8:00 PM 49 55 42 52 51 50 49 46
9:00 PM 45 53 37 48 47 46 45 41
10:00 PM 40 49 32 46 43 41 39 34
11:00 PM 37 44 32 41 39 37 36 34
12:00 AM 37 53 33 43 40 38 37 35
1:00 AM 41 54 33 44 43 42 41 38
2:00 AM 43 54 34 49 47 44 42 38
3:00 AM 39 51 31 45 43 40 38 35
4:00 AM 37 46 32 42 40 38 36 34
5:00 AM 38 48 31 43 41 38 36 33
6:00 AM 52 76 33 61 50 45 41 38
7:00 AM 45 60 38 54 49 43 42 40
8:00 AM 46 60 41 53 48 46 45 43
9:00 AM 43 55 38 48 46 44 43 41
10:00 AM 44 60 38 50 47 45 43 41
11:00 AM 45 62 39 51 48 45 44 42
12:00 PM 48 62 41 54 50 48 46 44
1:00 PM 47 59 38 52 50 48 46 41
Daytime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 47 62 40 52 49 47 45 42
High 52 76 47 56 53 52 51 49
Low 43 53 31 48 46 43 41 38
Nighttime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 41 53 32 46 43 40 38 35
High 52 76 34 61 50 45 42 38
Low 37 44 31 41 39 37 36 33
Ldn: 50
Appendix B‐2
Ambient Noise Monitoring Results ‐ Site A
Orfanos Residential Development
Thursday, March 3 ‐ Friday, March 4, 2015
Hour Leq Lmax Lmin L02 L08 L25 L50 L90
3:00 PM 52 69 47 56 53 52 51 49
4:00 PM 52 70 46 56 53 51 50 49
5:00 PM 51 66 47 56 53 51 50 48
6:00 PM 52 68 46 57 54 51 50 48
7:00 PM 49 63 45 54 51 50 49 47
8:00 PM 48 59 45 51 50 49 48 46
9:00 PM 49 55 45 52 51 50 49 47
10:00 PM 52 73 43 56 51 49 48 45
11:00 PM 51 68 43 54 53 51 50 46
12:00 AM 45 62 37 51 48 46 43 39
1:00 AM 39 49 36 42 40 39 38 37
2:00 AM 44 69 36 49 47 43 41 38
3:00 AM 43 62 36 49 46 44 41 38
4:00 AM 46 58 37 53 50 46 43 39
5:00 AM 45 63 39 51 48 44 42 40
6:00 AM 53 62 44 57 56 54 53 50
7:00 AM 49 59 42 56 54 49 47 45
8:00 AM 46 76 39 52 47 45 43 40
9:00 AM 50 71 38 59 53 50 47 40
10:00 AM 47 75 38 51 47 43 42 40
11:00 AM 49 58 39 54 53 51 45 42
12:00 PM 46 67 40 50 48 46 44 41
1:00 PM 46 69 39 51 47 44 43 41
2:00 PM 45 60 40 50 48 46 44 42
Daytime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 49 66 42 54 51 49 47 44
High 52 76 47 59 54 52 51 49
Low 45 55 36 50 47 43 42 40
Nighttime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 46 63 39 51 49 46 44 41
High 53 73 44 57 56 54 53 50
Low 39 49 36 42 40 39 38 37
Ldn: 54
Appendix B‐3
Ambient Noise Monitoring Results ‐ Site B
Orfanos Residential Development
Wednesday, March 2 ‐ Thursday, March 3, 2016
Hour Leq Lmax Lmin L02 L08 L25 L50 L90
3:00 PM 45 57 40 50 47 45 44 42
4:00 PM 46 65 39 51 49 46 43 40
5:00 PM 51 69 43 57 52 50 49 46
6:00 PM 52 70 47 56 53 52 51 49
7:00 PM 51 65 45 55 52 51 50 48
8:00 PM 50 60 46 53 51 50 49 48
9:00 PM 48 60 40 51 50 49 48 45
10:00 PM 42 56 36 48 44 42 41 38
11:00 PM 38 54 35 43 40 38 38 36
12:00 AM 40 65 35 49 40 38 38 36
1:00 AM 51 68 36 54 52 52 51 39
2:00 AM 44 57 36 50 48 45 42 39
3:00 AM 44 59 37 50 47 45 43 40
4:00 AM 46 62 36 55 48 44 41 38
5:00 AM 44 63 36 53 46 42 40 37
6:00 AM 42 61 37 49 44 41 40 38
7:00 AM 44 58 38 50 47 43 41 39
8:00 AM 46 70 39 54 50 45 43 40
9:00 AM 45 68 39 53 47 44 42 40
10:00 AM 49 65 39 57 56 46 42 40
11:00 AM 51 62 39 57 57 50 43 41
12:00 PM 45 55 40 50 48 46 44 41
1:00 PM 47 55 40 52 51 49 46 42
2:00 PM 44 58 39 50 47 44 43 41
Daytime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 48 63 41 53 50 47 45 43
High 52 70 47 57 57 52 51 49
Low 44 55 35 50 47 43 41 39
Nighttime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 43 61 36 50 46 43 41 38
High 51 68 37 55 52 52 51 40
Low 38 54 35 43 40 38 38 36
Ldn: 51
Appendix B‐4
Ambient Noise Monitoring Results ‐ Site B
Orfanos Residential Development
Thursday, March 3 ‐ Friday, March 4, 2015
Hour Leq Lmax Lmin L02 L08 L25 L50 L90
2:00 PM 59 72 45 65 63 61 58 50
3:00 PM 61 78 47 66 64 62 59 53
4:00 PM 61 76 48 67 64 62 60 55
5:00 PM 61 78 46 66 64 62 60 53
6:00 PM 63 90 47 66 64 62 59 52
7:00 PM 59 77 47 65 62 60 58 51
8:00 PM 58 71 46 64 62 60 57 50
9:00 PM 57 74 46 64 61 59 55 50
10:00 PM 55 75 45 62 60 56 52 48
11:00 PM 53 70 39 61 58 51 47 43
12:00 AM 48 64 35 58 52 47 43 39
1:00 AM 46 63 31 56 47 42 39 35
2:00 AM 46 69 31 53 47 43 40 36
3:00 AM 47 64 34 58 49 43 41 37
4:00 AM 51 69 38 61 56 49 46 42
5:00 AM 54 67 41 62 59 53 48 45
6:00 AM 57 72 45 63 61 58 55 51
7:00 AM 58 74 43 65 62 59 55 46
8:00 AM 59 77 43 65 63 61 57 48
9:00 AM 58 70 41 64 62 60 56 47
10:00 AM 58 69 42 64 62 59 56 47
11:00 AM 58 70 42 64 62 59 56 47
12:00 PM 59 71 42 64 63 60 57 48
1:00 PM 58 71 41 64 62 60 57 47
Daytime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 59 74 44 65 63 60 57 50
High 63 90 48 67 64 62 60 55
Low 57 69 31 64 61 59 55 46
Nighttime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 51 68 38 59 54 49 46 42
High 57 75 45 63 61 58 55 51
Low 46 63 31 53 47 42 39 35
Ldn: 59
Appendix B‐5
Ambient Noise Monitoring Results ‐ Site C
Orfanos Residential Development
Wednesday, March 2 ‐ Thursday, March 3, 2016
Hour Leq Lmax Lmin L02 L08 L25 L50 L90
2:00 PM 59 73 43 65 63 61 58 49
3:00 PM 60 74 41 65 63 61 59 50
4:00 PM 60 74 41 66 64 61 59 51
5:00 PM 62 88 45 66 64 62 59 52
6:00 PM 61 75 49 67 64 62 60 53
7:00 PM 60 80 46 66 63 61 58 51
8:00 PM 58 70 45 64 62 59 56 49
9:00 PM 56 70 39 63 60 58 53 45
10:00 PM 54 70 34 62 59 54 46 38
11:00 PM 51 68 32 61 57 48 40 35
12:00 AM 49 65 33 60 54 43 37 35
1:00 AM 49 71 33 58 50 40 38 35
2:00 AM 49 66 32 59 52 48 43 37
3:00 AM 48 65 36 58 50 47 45 39
4:00 AM 52 79 36 59 54 45 42 39
5:00 AM 53 80 35 61 58 49 43 38
6:00 AM 55 70 36 62 60 56 48 40
7:00 AM 59 74 41 66 63 61 56 46
8:00 AM 59 70 43 65 63 60 57 48
9:00 AM 58 77 43 64 61 59 56 48
10:00 AM 57 68 44 63 61 59 56 47
11:00 AM 59 74 43 64 62 60 57 50
12:00 PM 63 73 46 69 68 65 62 54
1:00 PM 67 76 46 75 72 67 64 54
Daytime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 60 74 44 66 64 61 58 50
High 67 88 49 75 72 67 64 54
Low 56 68 32 63 60 58 53 45
Nighttime Leq Lmax Lmin L02 L08 L25 L50 L90
Average 51 70 34 60 55 48 42 37
High 55 80 36 62 60 56 48 40
Low 48 65 32 58 50 40 37 35
Ldn: 58
Appendix B‐6
Ambient Noise Monitoring Results ‐ Site C
Orfanos Residential Development
Thursday, March 3 ‐ Friday, March 4, 2015
Appendix C-1
Ambient Noise Monitoring Results - Site A
Orfanos Residential Development
Wednesday, March 2 - Thursday, March 3, 2016
3035404550556065707580
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
Sound Level, dBA
Hour of Day
Lmax L50 Leq L90
Appendix C-2
Ambient Noise Monitoring Results - Site A
Orfanos Residential Development
Thursday, March 3 - Friday, March 4, 2015
3035404550556065707580
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
Sound Level, dBA
Hour of Day
Lmax L50 Leq L90
Appendix C-3
Ambient Noise Monitoring Results - Site B
Orfanos Residential Development
Wednesday, March 2 - Thursday, March 3, 2016
3035404550556065707580
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
2:00
PM
Sound Level, dBA
Hour of Day
Lmax L50 Leq L90
Appendix C-4
Ambient Noise Monitoring Results - Site B
Orfanos Residential Development
Thursday, March 3 - Friday, March 4, 2015
3035404550556065707580
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
2:00
PM
Sound Level, dBA
Hour of Day
Lmax L50 Leq L90
Appendix C-5
Ambient Noise Monitoring Results - Site C
Orfanos Residential Development
Wednesday, March 2 - Thursday, March 3, 2016
30405060708090
100
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
Sound Level, dBA
Hour of Day
Lmax L50 Leq L90
Appendix C-6
Ambient Noise Monitoring Results - Site C
Orfanos Residential Development
Thursday, March 3 - Friday, March 4, 2015
30405060708090
100
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:00
PM
11:00
PM
12:00
AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:00
AM
11:00
AM
12:00
PM
1:00
PM
Sound Level, dBA
Hour of Day
Lmax L50 Leq L90

Future
18,765
80 20
2 1
45 Soft
Medium Heavy
Location Description Distance Offset (dB) Autos Trucks Trucks Total 1 Nearest Backyards 90 0 66 57 59 67
2 Nearest Building Facades 90 0 66 57 59 67
Ldn Contour, dB
75 70
65 60
Intervening Ground Type (hard/soft):
121
260
Project Information:

Traffic Data:

Traffic Noise Levels:

Traffic Noise Contours (No Calibration Offset):
-----------------Ldn, dB------------------
Distance from Centerline, (ft)
26 2016-037
Percent Nighttime Traffic:

Percent Medium Trucks (2 axle):

Job Number:

Project Name:

Roadway Name:

Year:

Appendix E
56 Empire Avenue
Percent Heavy Trucks (3+ axle):

Assumed Vehicle Speed (mph):

FHWA Traffic Noise Prediction Model (FHWA-RD-77-108)
Noise Prediction Worksheet
Average Daily Traffic Volume:

Percent Daytime Traffic:

Orfanos Residential Development
66 57
59 85
5 0
2 8
0 5
0 6
Autos
Medium
Trucks
Heavy
Trucks Total Autos?
Medium
Trucks?
Heavy
Trucks?
6 59 51 53 60 Yes Yes Yes
7 57 49 51 58 Yes Yes Yes
8 55 47 49 57 Yes Yes Yes
9 54 46 48 55 Yes Yes Yes
10 53 44 46 54 Yes Yes Yes
11 52 43 45 53 Yes Yes Yes
12 51 42 44 52 Yes Yes Yes
13 50 42 44 52 Yes Yes Yes
14 50 42 43 51 Yes Yes Yes
Notes:
7 8
Receiver Description:
13 6
Top of
Barrier
Elevation (ft)
Barrier
Height2
(ft)
Medium Truck Elevation:

Heavy Truck Elevation:

Receiver Elevation1
:
14 9
10 11
12 Barrier Breaks Line of Sight to…
Nearest Backyards
Centerline to Barrier Distance (C1):

Barrier to Receiver Distance (C2):

Pad/Ground Elevation at Receiver:

Barrier Effectiveness:

Base of Barrier Elevation:

Starting Barrier Height
Auto Ldn, dB:

Future
Job Number:

Project Name:

Automobile Elevation:

Roadway Name:

Year:

Orfanos Residential Development
Heavy Truck Ldn, dB:

Medium Truck Ldn, dB:
2016-037
Noise Barrier Effectiveness Prediction Worksheet
FHWA Traffic Noise Prediction Model (FHWA-RD-77-108)
Appendix F
-------------------- Ldn, dB --------------------

1.Standard receiver elevation is five feet above grade/pad elevations at the receiver location(s) Project Information:

Noise Level Data:

Site Geometry:

Empire Avenue
Location(s): Nearest Backyards
Project #:

Description:Ldn/CNEL: LdnHard/Soft: Soft
% Med. % Hvy. Offset
Segment Roadway Name Segment Description ADT Day % Eve % Night % Trucks Trucks Speed Distance (dB) 1 Empire Avenue North of Neroly Road 10,465 80 20 2 1 45 100 2 Empire Avenue Neroly Road to Project Site 11,545 80 20 2 1 45 1003 Empire Avenue Project Site to Lone Tree Way 7,950 80 20 2 1 35 1004 Empire Avenue South of Lone Tree Way 5,250 80 20 2 1 35 1005 Neroly Road West of Empire Avenue 4,290 80 20 2 1 35 1006 Neroly Road East of Empire Avenue 9,970 80 20 2 1 45 1007 Lone Tree Way West of Empire Avenue 18,505 80 20 2 1 45 1008 Lone Tree Way East of Empire Avenue 17,305 80 20 2 1 45 100 Appendix G-1
2016-037
FHWA-RD-77-108 Highway Traffic Noise Prediction Model
Existing
Data Input Sheet
Project #:

Description:Ldn/CNEL: LdnHard/Soft: Soft
% Med. % Hvy. Offset
Segment Roadway Name Segment Description ADT Day % Eve % Night % Trucks Trucks Speed Distance (dB) 1 Empire Avenue North of Neroly Road 10,705 80 20 2 1 45 100 2 Empire Avenue Neroly Road to Project Site 11,860 80 20 2 1 45 1003 Empire Avenue Project Site to Lone Tree Way 9,050 80 20 2 1 35 1004 Empire Avenue South of Lone Tree Way 5,470 80 20 2 1 35 1005 Neroly Road West of Empire Avenue 4,290 80 20 2 1 35 1006 Neroly Road East of Empire Avenue 10,045 80 20 2 1 45 1007 Lone Tree Way West of Empire Avenue 19,170 80 20 2 1 45 1008 Lone Tree Way East of Empire Avenue 17,520 80 20 2 1 45 100 Appendix G-2
2016-037
FHWA-RD-77-108 Highway Traffic Noise Prediction Model
Existing + Project
Data Input Sheet
Project #:

Description:Ldn/CNEL: LdnHard/Soft: Soft
% Med. % Hvy. Offset
Segment Roadway Name Segment Description ADT Day % Eve % Night % Trucks Trucks Speed Distance (dB) 1 Empire Avenue North of Neroly Road 16,750 80 20 2 1 45 100 2 Empire Avenue Neroly Road to Project Site 18,450 80 20 2 1 45 1003 Empire Avenue Project Site to Lone Tree Way 14,250 80 20 2 1 35 1004 Empire Avenue South of Lone Tree Way 12,900 80 20 2 1 35 1005 Neroly Road West of Empire Avenue 7,100 80 20 2 1 35 1006 Neroly Road East of Empire Avenue 13,700 80 20 2 1 45 1007 Lone Tree Way West of Empire Avenue 35,900 80 20 2 1 45 1008 Lone Tree Way East of Empire Avenue 35,750 80 20 2 1 45 100 Appendix G-3
2016-037
FHWA-RD-77-108 Highway Traffic Noise Prediction Model
Cumulative
Data Input Sheet
Project #:

Description:Ldn/CNEL: LdnHard/Soft: Soft
% Med. % Hvy. Offset
Segment Roadway Name Segment Description ADT Day % Eve % Night % Trucks Trucks Speed Distance (dB) 1 Empire Avenue North of Neroly Road 16,990 80 20 2 1 45 100 2 Empire Avenue Neroly Road to Project Site 18,765 80 20 2 1 45 1003 Empire Avenue Project Site to Lone Tree Way 15,170 80 20 2 1 35 1004 Empire Avenue South of Lone Tree Way 13,210 80 20 2 1 35 1005 Neroly Road West of Empire Avenue 7,100 80 20 2 1 35 1006 Neroly Road East of Empire Avenue 13,775 80 20 2 1 45 1007 Lone Tree Way West of Empire Avenue 36,385 80 20 2 1 45 1008 Lone Tree Way East of Empire Avenue 35,965 80 20 2 1 45 100 Appendix G-4
2016-037
FHWA-RD-77-108 Highway Traffic Noise Prediction Model
Cumulative + Project
Data Input Sheet