APPENDIX G – NOISE AND VIBRATION TECHNICAL REPORT · Theater, Microsoft Square, the JW Marriott...

APPENDIX G – NOISE AND VIBRATION TECHNICAL REPORT

NOISE AND VIBRATION TECHNICAL REPORT

For the Proposed 1020 S. Figueroa Street Project

Los Angeles, CA

Prepared for:

HAZENS GROUP/JIA YUAN USA CO., INC. 801 S. Figueroa Street. Suite 1800

Los Angeles, CA 90017

Prepared by:

PCR SERVICES CORPORATION 201 Santa Monica Boulevard, Suite 500

Santa Monica, CA 90401 TEL 310.451.4488 FAX 310.451.5279

June 2016

City of Los Angeles 1020 S. Figueroa Street Project PCR Services Corporation. i

Table of Contents

Page

ACRONYMS AND ABBREVIATIONS .................................................................................................................................... 1

EXECUTIVE SUMMARY ..................................................................................................................................................... ES-1

1. INTRODUCTION .................................................................................................................................................................. 3 1.1 Existing Conditions .............................................................................................................................................................. 3 1.2 Project Description ............................................................................................................................................................... 4 1.3 Noise and Vibration Descriptors .................................................................................................................................... 7 1.4 Existing Noise Environment .......................................................................................................................................... 11

2. REGULATORY SETTING AND SIGNIFICANCE THRESHOLDS ............................................................................. 17 2.1 Regulatory Setting ............................................................................................................................................................. 17 2.2 Significance Thresholds .................................................................................................................................................. 20

3. NOISE AND VIBRATION METHODOLOGY ................................................................................................................ 23 3.1 Methodology ........................................................................................................................................................................ 23 3.2 Project Characteristics and Project Design Features .......................................................................................... 24

4. COMPLIANCE WITH NOISE AND VIBRATION STANDARDS ............................................................................... 26 4.1 Construction Noise ............................................................................................................................................................ 26 4.2 Project-related Traffic Noise ......................................................................................................................................... 30 4.3 On-Site Operational Noise .............................................................................................................................................. 31 4.4 Ground-Borne Vibration ................................................................................................................................................. 39 4.5 Cumulative Analysis ......................................................................................................................................................... 41

5. MITIGATION MEASURES ............................................................................................................................................... 47

6. SUMMARY OF RESULTS ................................................................................................................................................. 49 6.1 Construction ......................................................................................................................................................................... 49 6.2 Operation............................................................................................................................................................................... 49

APPENDICES Appendix A – Ambient Noise and Vibration Data Appendix B – Construction Noise Calculations Appendix C – Off-Site Construction Traffic Noise Calculations Appendix D – Traffic Noise Model Calibration Results Appendix E – Off-Site Traffic Noise Calculations

CityofLosAngeles 1020S.FigueroaStreetProjectPCRServicesCorporation. ii

List of Figures Page

Figure1 RegionalandSiteLocationMap....................................................................................................................................5 Figure2 NoiseSensitiveUsesandNoiseMeasurementLocations...................................................................................6 Figure3 CommonNoiseLevels.......................................................................................................................................................9

List of Tables Page

Table1 SummaryofAmbientNoiseMeasurements.........................................................................................................13 Table2 TrafficNoiseModelCalibrationResults................................................................................................................14 Table3 PredictedExistingVehicularTrafficNoiseLevels.............................................................................................15 Table4 CityofLosAngelesPresumedAmbientNoiseLevels......................................................................................17 Table5 CityofLosAngelesLandUseCompatibilityforCommunityNoise............................................................19 Table6 ConstructionEquipmentNoiseLevels...................................................................................................................27 Table7 EstimateofPhase1ConstructionNoiseLevels(Leq)atExistingOff‐SiteSensitiveReceiver

Locations..............................................................................................................................................................................28 Table8 EstimateofPhase2ConstructionNoiseLevels(Leq)atExistingOff‐SiteSensitiveReceiver

Locations..............................................................................................................................................................................29 Table9 Off‐SiteTrafficNoiseImpacts–ExistingBaselineConditions.....................................................................32 Table10 Off‐SiteTrafficNoiseLevels–Future2023ProjectIncrement...................................................................33 Table11 TypicalVibrationVelocitiesfortheProjectConstructionEquipment......................................................40 Table12 Off‐SiteTrafficNoiseLevels–Future2023CumulativeIncrement...........................................................43

City of Los Angeles 1020 S. Figueroa Street Project PCR Services Corporation. 1

ACRONYMS AND ABBREVIATIONS Acronym Description Building Code Los Angeles Building Code (Chapter IX, Article 1 of the Municipal Code) City City of Los Angeles CNEL Community Noise Equivalent Level dB decibel dBA A-weighted dB scale dBC C-weighted dB scale Leq Equivalent Sound Level Lmax Maximum Noise Level Noise Element City of Los Angeles General Plan Noise Element PPV peak particle velocity

TeNS Caltrans Technical Noise Supplement

City of Los Angeles 1020 S. Figueroa Street Project PCR Services Corporation. ES-1

EXECUTIVE SUMMARY

The purpose of this Noise and Vibration Technical Report is to assess and discuss the impacts of potential noise and vibration impacts that may occur with the implementation of the 1020 S. Figueroa Street Project (Project), located at 1020 S. Figueroa Street, Los Angeles, California. The analysis describes the existing noise environment in the project area, estimates future noise and vibration levels at surrounding land uses resulting from construction and operation of the project, and identifies the potential for significant impacts. An evaluation of the project’s contribution to potential cumulative noise impacts is also provided. Noise worksheets and technical data used in this analysis are provided in the Appendices.

Jia Yuan USA Co, Inc., the Applicant, proposes to develop a mixed-use residential, hotel and commercial project (the Project), located on an approximately 2.7 acre ‘L’-shaped site (Project Site) bounded by S. Figueroa Street to the west, S. Flower Street to the east, Olympic Boulevard to the north, and 11th Street to the south. The Project Site is located in the southwest portion of the Downtown community of the City of Los Angeles (City) which falls within the South Park district of the Central City Community Plan Area. The Project Site is in a highly urbanized and active area adjacent to LA LIVE, Staples Center Arena, Microsoft Theater, and in close proximity to the Los Angeles Convention Center. The Project Site is currently developed with the nine-story Luxe City Center Hotel (Luxe Hotel) and surrounding surface parking lots, which would be removed to support the Project.

The report summarizes the potential for the project to conflict with applicable noise and vibration regulations, standards, and thresholds. The findings of the analyses are as follows:

The noise levels from construction of the project would exceed the significance thresholds at the existing residential receptors along Olympic Boulevard (R2) and S. Flower Street (R3) and future residential receptors along W. 11th Street. Although the proposed mitigation, consisting of a noise barrier along the site’s eastern and southern boundaries would provide for a fence with sound blankets that would achieve noise reductions of at least 14 dBA between the site of Project construction and the multi-family residential uses across S. Figueroa Street and 11 dBA between the site of Project construction and the future multi-family residential uses across W. 11th Street. Although the noise reduction provided by the noise barrier would be considered a substantial reduction, construction noise levels would still increase the daytime ambient noise level above the 5-dBA significance threshold at the upper floors (i.e. 3rd floor to top floor) of the mixed-use residential uses (R3) across S. Flower Street and the future residential uses across W. 11th Street. The upper floors of the mixed-use residential uses (R3) and the future residential uses across W. 11th Street would not have noise reductions by the sound barrier since the proposed sound barrier would not block the line of sight between the construction site and upper floors of the mixed-use residential uses (R3) and the future residential uses across W. 11th Street. Thus, construction noise impacts would be significant and unavoidable at the mixed-use residential uses (R2 and R3) and the future residential uses across W. 11th Street. Thus, construction noise impacts would be significant and unavoidable.

Construction activities would result in sporadic, temporary vibration effects to the Petroleum Building. Vibration levels could exceed the 0.5 inches per second PPV threshold at this historic building resulting in a potentially significant impact. Implementation of the prescribed mitigation measure would reduce this impact to a less than significant level. Thus, vibration impacts on the

Executive Summary June 2016

City of Los Angeles 1020 S. Figueroa Street Project PCR Services Corporation. ES-2

Petroleum Building would be less than significant. Impacts to human annoyance would be less than significant.

Operation of the project would result in less than significant noise and vibration impacts to off-site noise sensitive receptors.

Even with prescribed mitigation measures, if nearby related projects were to be constructed concurrently with the project, significant and unavoidable cumulative construction noise impacts could occur at the R2 through R6 and future noise receptor locations along W. 11th Street. However, those noise levels would be intermittent, temporary and would cease at the end of the construction phase, and would comply with time restrictions and other relevant provisions in the LAMC. Noise associated with cumulative construction activities would be reduced to the degree reasonably and technically feasible through proposed mitigation measures for each individual project and compliance with the City’s noise ordinances.


1. INTRODUCTION

PCR has conducted an acoustical study with respect to potential noise and vibration impacts with construction activities, surface transportation, and other aspects of project operations that are noise and vibration intensive and that have the potential to impact neighboring noise sensitive land uses. The objectives of this noise study are to:

a. Quantify the existing ambient noise environment at the proposed project site;

b. Evaluate the construction and operational noise and vibration impacts to nearby noise sensitive receptors (i.e., residential uses) based on applicable City standards and thresholds;

c. Provide, if needed, noise mitigation measures as required to meet applicable noise regulations and standards as specified by the City of Los Angeles.

1.1 EXISTING CONDITIONS The Project Site is generally referenced to be located at 1020 S. Figueroa Street,1 within the South Park district of the Central City Community Plan Area in Downtown Los Angeles. As shown in Figure 1, Regional and Site Location Map, the Project Site is served by a network of regional transportation facilities that provide access to the greater metropolitan area. Regional access to the Project Site is provided by the Pasadena/Harbor Freeway (I-110/SR 110), located approximately 0.3 miles to the west; the Santa Monica Freeway (I-10) located approximately 0.5 miles to the south; and, the Hollywood Freeway (US-101), located approximately 1.5 miles to the north. These three freeways also provide access to the Golden State/Santa Ana Freeway (I-5) to the north, and the San Bernardino Freeway (I-10) and the Pomona Freeway (SR-60) to the east and southeast, respectively.

The Project Site is located in a regional center which serves as a commercial center for Los Angeles and the surrounding communities, and as an entertainment center of regional importance that is a popular destination for visitors, local workers and area residents. The Project area is characterized by a mixed of entertainment, commercial, restaurant, bar, office, and residential uses. As shown in Figure 2, Noise Sensitive Uses and Noise Measurement Locations, adjacent to the Project Site and to the west across S. Figueroa Street is LA LIVE; an entertainment, hotel, and residential complex that includes the Microsoft Theater, Microsoft Square, the JW Marriott Los Angeles at LA LIVE (Marriott Hotel), the Ritz-Carlton Hotel, the Ritz-Carlton Residences, and the Marriott Courtyard and Residence Inn at Los Angeles LA LIVE.

To the north of the Project Site across Olympic Boulevard are several high rise mixed-use residential and commercial buildings. These include the 28-story 717 Olympic project, which includes apartments over six stories of parking and ground floor commercial uses. To the immediate east of the Project Site fronting Olympic Boulevard is the 11-story Petroleum Building, a designated City Cultural-Historic Monument, which includes office above ground level commercial uses. Also immediately east of the Project fronting on S.

1 All addresses for the Project Site are: 716-730 W. Olympic Boulevard; 1016-1060 S. Figueroa Street; 607-613 W. 11th Street; and

1041-1061 S. Flower Street

1. Introduction June 2016


Flower Street is a surface parking lot and the one-story El Cholo restaurant, with mid-and high-rise multi-family residential and mixed use buildings uses further east across S. Flower Street. To the south of the Project Site across 11th Street, is Oceanwide Plaza; a high rise mixed-use residential, commercial, and hotel project that is currently under construction and is estimated to be completed in 2018. Further south is another entitled mixed-use property pending development, known as Circa (1200 Fig Project), the Metro Pico Station and new and recently rehabilitated high-rise residential and mixed-use buildings.

1.2 PROJECT DESCRIPTION The Project would include up to 1,129,284 sf of floor area (approximately 9.7:1 FAR) in three towers atop a Podium with four subterranean levels and four levels above grade. In total, the Project would include up to 300 hotel rooms, up to 650 residential condominium units, and up to 80,000 sf of restaurant, retail, and other commercial uses at the first two levels along all street frontages with landscaped sidewalks and an open public Plaza along S. Figueroa Street adjacent to LA LIVE. The first and second levels of the Podium would also include commercial uses with the third and forth levels of the Podium including hotel amenities and residential units. Parking for vehicles would be provided within four subterranean levels beneath the Podium. Bicycle parking would be provided on Site in compliance with LAMC requirements.

The Project would include two residential towers and one hotel tower. Phase I of the Project would include the construction of the 34 story Hotel Tower, located on the corner of 11th Street and S. Figueroa Street would include up to 300 hotel rooms, banquet, conference space and various amenities. Phase I would also include construction of the Residential Tower 1 that would include up to 290 residential units and would be located at the corner of 11th Street and S. Flower Street. During Phase 2, the Residential Tower 2 would be constructed that would include up to 360 residential units and would be located at the corner of S. Figueroa Street and W. Olympic Boulevard.

1.2.1 Construction The Project will be constructed in two phases. Construction of Phase 1 of the Project is expected to commence in the third quarter of 2017 and would be completed in the second quarter of 2020. Construction of Phase 2 of the Project would begin immediately after Phase 1 and would be completed in the first quarter of 2023.

1.2.2 Operation The Project would increase square footage and associated vehicle trips as compared to existing conditions. Therefore, an incremental increase in noise levels is calculated.

PROJECTSITE

FIGURE

Source: ESRI Street Map, 2009; PCR Services Corporation, 2016.

0 800 1,600 Feet1020 S. Figueroa Street Project

Regional and Site Location Mapo 1

^PROJECT

SITE

A

A

A

A

A

A

A

Olympic Boulevard

W 11th Street

W 12th Street

S Fig

ueroa

Stree

t

W 9th Street

¬«110

S Flo

wer St

reet

Staples Center

MicrosoftTheater

LA LIVE

LA LIVE

The Ritz-Carlton Residences and

JW Marriott (Hotel/Residences)

Construction

Construction

Multi-Family

Multi-Family Multi-

Family

Commercial

Retail/Parking

Multi-Family

Multi-Family Multi-

Family

Multi-Family

Multi-Family

OfficePetroliumBuilding/Office

Restaurant

Mixed Use/Multi-Family

Park

Multi-FamilyCommercial Mixed Use/

Multi-family

Multi-Family

Parking

Hotel

Hotel

OfficeOffice

MedicalOffice

Multi-Family

Salvation ArmyDepartment

of Water and Power

R7

R6

R5

R4

R3

R2

R1

FIGURE

Source: Google Maps, 2015 (Aerial); PCR Services Corporation, 2016.

0 300 600 Feet1020 S. Figueroa Street Project

Noise Sensitive Uses andNoise Measurement Locationso 2

Project SiteA Noise Measurement Location

June 2016 1. Introduction


1.3 NOISE AND VIBRATION DESCRIPTORS

1.3.1 Noise Noise is most often defined as unwanted sound. Although sound can be easily measured, the perceptibility of sound is subjective and the physical response to sound complicates the analysis of its impact on people. People judge the relative magnitude of sound sensation in subjective terms such as “noisiness” or “loudness.” Sound pressure magnitude is measured and quantified using a logarithmic ratio of pressures, the scale of which gives the level of sound in decibels (dB). The human hearing system is not equally sensitive to sound at all frequencies. Therefore, to approximate the human, frequency-dependent response, the A-weighted filter system is used to adjust measured sound levels. The A-weighted sound level (dBA) de-emphasizes low frequencies to which human hearing is less sensitive and focuses on mid- to high-range frequencies. The range of human hearing is approximately 3 to 140 dBA, with 110 dBA considered intolerable or painful to the human ear. Another commonly used scale is the C-weighted sound level (dBC), which includes low-frequency noise. In a non-controlled environment, a change in sound level of 3 dB is considered “just perceptible,” a change in sound level of 5 dB is considered “clearly noticeable,” and a change in 10 dB is perceived as a doubling of sound volume.2 A comparison of types of commonly experienced environmental noise is provided in Figure 3, Common Noise Levels.

Although the A-weighted scale accounts for the range of people’s response, and is therefore commonly used to quantify individual event or general community sound levels, the degree of annoyance or other response effects also depends on several other factors. These factors include:

Ambient (background) sound level;

Magnitude of sound event with respect to the background noise level;

Duration of the sound event;

Number of event occurrences and their repetitiveness; and

Time of day that the event occurs.

In an outdoor environment, sound levels attenuate with distance. Such attenuation is called “distance loss” or “geometric spreading” and is influenced by the noise source configuration (i.e., point source or line source). For a point source, such as stationary equipment, the rate of sound attenuation is usually 6 dB per doubling of distance from the noise source at urban, acoustically “hard” sites, or highly acoustically reflective settings that preserve sound energy (water, asphalt, and concrete). Within such environments, a sound level of 50 dBA at a distance of 25 feet from the noise source would attenuate to 44 dBA at a distance of 50 feet. For a line source within an acoustically hard environment, such as a roadway with a constant flow of traffic, the rate of sound attenuation is 3 dB per doubling of distance.3 In addition, structures (e.g., buildings and solid walls) and natural topography (e.g., hills) that obstruct the line-of-sight between a noise source and a receptor further reduce the noise level if the receptor is located within the “shadow” of the obstruction, such as behind a sound wall. This type of sound attenuation is known as “barrier insertion loss.” If a receptor is located behind the wall but still has a view of the source (i.e., line-of-sight not fully blocked), some barrier

2 Engineering Noise Control, Bies & Hansen, 1988. 3 Caltrans, Technical Noise Supplement (TeNS), 2013.



insertion loss would still occur, but to a lesser extent. A receptor located on the same side of the wall as a noise source may actually experience an increase in the perceived noise level as the wall reflects noise back to the receptor, thereby compounding the noise. Noise barriers can provide noise level reductions ranging from approximately 5 dBA (where the barrier just breaks the line-of-sight between the source and receiver) up to 20 dBA with a more substantial barrier.4

Community noise levels usually change continuously during the day. The equivalent sound level (Leq) is normally used to describe community noise. The Leq is the equivalent steady-state A-weighted sound level that would contain the same acoustical energy as the time-varying A-weighted sound level during the same time interval. For intermittent noise sources, the maximum noise level (Lmax) is normally used to represent the maximum noise level measured during the measurement. Maximum and minimum noise levels, as compared to the Leq, are a function of the characteristics of the noise source. As an example, sources such as generators have maximum and minimum noise levels that are similar to Leq since noise levels for steady-state noise sources do not substantially fluctuate. However, as another example, vehicular noise levels along local roadways result in substantially different minimum and maximum noise levels when compared to the Leq since noise levels fluctuate during pass-by events. The City of Los Angeles Noise Ordinance uses the Leq for the evaluation of noise violations.

To assess noise levels over a given 24-hour time period, the Community Noise Equivalent Level (CNEL) descriptor is used in land use planning. CNEL is the time average of all A-weighted sound levels for a 24-hour period with a 10 dBA adjustment (upward) added to the sound levels which occur in the night (10:00 P.M. to 7:00 A.M.) and a 5 dBA adjustment (upward) added to the sound levels which occur in the evening7:00 P.M. to 10:00 P.M.). These penalties attempt to account for increased human sensitivity to noise during the quieter nighttime periods, particularly where sleep is the most probable activity. CNEL has been adopted(by the State of California to define the community noise environment for development of a community noise element of a General Plan and is also used by the City of Los Angeles for land use planning in the City’s General Plan Noise Element (Noise Element).5

1.3.2 Vibration Vibration is an oscillatory motion through a solid medium in which the motion’s amplitude can be described in terms of displacement, velocity, or acceleration. The response of humans, buildings, and equipment to vibration is more accurately described using velocity or acceleration.6 Vibration amplitudes are usually described in terms of peak levels, as in peak particle velocity (PPV). The peak level represents the maximum instantaneous peak of the vibration signal. In addition, vibrations can be measured in the vertical, horizontal longitudinal, or horizontal transverse directions. Ground vibrations are most often greatest, and can damage buildings, when they propagate in the vertical direction.7 Therefore, the analysis of ground-borne vibration associated with the project was evaluated in the vertical direction. Typically, ground-borne vibration generated by man-made activities attenuates rapidly with distance from the source of the vibration.

4 Ibid. 5 State of California, General Plan Guidelines, 2002. 6 Federal Transit Administration, Transit Noise and Vibration Impact Assessment, page 7-3, May 2006. 7 California Department of Transportation (Caltrans), Transportation Related Earthborne Vibrations, page 4, February 2002.

P C R

FIGURECommon Noise Levels1020 S. Figueroa Street Project 3

Source: Caltrans Noise Manual, California Department of Transporta on, 1980.

Noise Level(dBA)

110

100

90

80

70

60

50

40

30

20

10

0

Common Indoor Noise Levels

Rock Band

Inside Subway Train

Food Blender @ 3 feetGarbage Disposal @ 3 feet

Shouting @ 3 feet

Vacuum Cleaner @ 10 feet

Normal Speech @ 3 feet

Large Business Office

Dishwasher next room

Small Theater/Conference Room(background)

Library

Bedroom at NightConcert Hall (background)

Broadcast & Recording Studio

Threshold of Hearing

Common Outdoor Noise Levels

Jet Flyover @ 1,000 feet

Gas Lawn Mower @ 3 feetDiesel Truck @ 50 feet

Gas Lawn Mower @ 100 feet

Commercial Area

Quiet Urban Daytime

Quiet Urban Nightime

Quiet Suburban Nightime

Noisy Urban Daytime

Heavy Traffic @ 300 feet

Quiet Rural Nightime



This page is intentionally blank.



Man- made vibration issues are therefore usually confined to short distances from the source (i.e., 50 feet or less). Vibration attenuation equation presented below.

PPVequip = PPVref (25/D)n

where PPVref = reference source vibration D = Distance

n =factor for soil attenuation.

1.4 EXISTING NOISE ENVIRONMENT

1.4.1 Noise-Sensitive Receptor Locations Some land uses are considered more sensitive to noise than others due to the amount of noise exposure and the types of activities typically involved at the receptor location. The City of Los Angeles CEQA Thresholds Guide states that residences, schools, motels and hotels, libraries, religious institutions, hospitals, nursing homes, and parks are generally more sensitive to noise than commercial and industrial land uses. Existing noise-sensitive uses in the vicinity of the Project Site are summarized below:

LA LIVE: Sensitive land uses include Microsoft Plaza, the Ritz-Carlton Hotel, and the Ritz-Carlton Residences. These uses are located across from S. Figueroa Street, west of the Project Site (ranging from 240 to 600 feet from the boundaries of the Project Site).

Hotel: Hotel Figueroa is located approximately 180 feet northwest of the Project Site.

Multi-Family Residential Dwellings: Several high rise mixed-use residential buildings are located to the north of the Project Site across from Olympic Boulevard. Mid- and high-rise multi-family residential are also located east of the Project Site fronting S. Flower Street. Existing high-rise residential buildings are located approximately 300 feet south of the Project Site across from 11th Street.

Future Residential Uses: Mixed-use projects that incorporate residential uses include the Oceanwide Plaza project and the Circa project. These projects are currently under construction and are located approximately 80 feet and 700 feet the south of the Project Site respectively.

Future Residential Uses: Mixed-use project that incorporate residential uses at the proposed Olympic Tower project. The proposed project is not currently under construction and is located approximately 140 feet north of the Project Site.

All other noise-sensitive uses regulated by the City are located at greater distances from the Project Site, and would be not be impacted by potential Project noise. The following impacts are quantified only for the above described sensitive uses. The Noise Monitoring Locations are shown on Figure 2, Noise Sensitive Uses and Noise Monitoring Locations.

1.4.2 Ambient Noise Levels The predominant existing noise sources in the Project vicinity include roadway noise from Olympic Boulevard to the north, S. Figueroa Street to the west, S. Flower Street to the east, and 11th Street to the



south. Secondary noise sources include activities related to the operation of commercial businesses in the area and include loading area/delivery truck activities, trash compaction, and refuse collection.

Ambient noise measurements were conducted at seven locations representing the residential sensitive receptors and hotel uses in the immediate Project vicinity, as indicated on Figure 2, from Thursday, January 14, through Tuesday, January 19, 2016. The receptors are described below. Both long-term and short-term measurements were conducted. Long-term measurements were conducted at locations R2 and R3, on the Project Site’s property line, for four days, and short-term (15-minute) measurements were recorded at locations R1, and from R4 through R7.

The ambient noise measurements were conducted using the Larson-Davis 820 Precision Integrated Sound Level Meter (SLM). The Larson-Davis 820 SLM is a Type 1 standard instrument as defined in the American National Standard Institute S1.4. All instruments were calibrated and operated according to the applicable manufacturer specification. The microphone was placed at a height of 5 feet above the local grade, at the following locations as shown in Figure 2:

Measurement Location R1: This location represents the existing noise environment of the Project Site. The sound level meter was placed on the northwestern boundary of the Project Site along S. Figueroa Street.

Measurement Location R2: This location represents the existing noise environment along the Project Site and the multi-family residential uses across Olympic Boulevard northeast of the Project Site. The sound level meter was placed on the north corner of the Project Site on the southeastern corner of Olympic Boulevard and S. Figueroa Street.

Measurement Location R3: This location represents the existing noise environment of the Project Site and multi-family residential uses across S. Flower Street southeast of the Project Site. The sound level meter was placed on southeastern corner of the Project Site along S. Flower Street.

Measurement Location R4: This location represents the existing noise environment of the multi-family residential uses on the northeastern corner of Olympic Boulevard and S. Flower Street. The sound level meter was placed along S. Flower Street in front of the multi-family residential building.

Measurement Location R5: This location represents the existing noise environment of the existing hotel uses on the northwestern corner of W. Olympic Boulevard and S. Figueroa Street and the proposed Olympic Tower project (mixed-use residential development). The sound level meter was placed along S. Figueroa Street near the existing hotel building and the east side of the proposed Olympic Tower project site.

Measurement Location R6: This location represents the existing noise environment of the existing multi-family residential uses and future residential/hotel uses to the south of the Project Site. The sound level meter was placed along S. Flower Street in front of the multi-family residential building.

Measurement Location R7: This location represents the existing noise environment of the Ritz-Carlton Hotel and the Ritz-Carlton Residences west of the Project Site. The sound level meter was placed along Olympic Boulevard in front of the Ritz-Carlton Hotel and the Ritz-Carlton Residences.

A summary of noise measurement data is provided in Table 1, Summary of Ambient Noise Measurements. As shown in Table 1, the existing ambient daytime and nighttime noise levels at all of the noise-sensitive residential receptors measured already exceed the City’s presumed ambient noise levels for residential areas



of 50 dBA during the daytime and 40 dBA during the nighttime. The ambient noise levels in the immediate Project vicinity are representative of a noisy urban area.

CNEL levels for each roadway segment in the Project vicinity were calculated using a noise prediction model which was developed based on methodologies provided in the California Department of Transportation (Caltrans) Technical Noise Supplement (TeNS) document and traffic data provided by the Project traffic consultant. The roadway noise calculation procedures provided in the Caltrans TeNS are consistent with Federal Highway Administration RD-77-108 roadway noise prediction methodologies. This methodology, considered an industry standard, allows for the definition of roadway configurations, barrier information (if any), and receiver locations. A traffic model calibration test was performed to establish the noise prediction model's accuracy between 10 A.M. and 12 P.M. on Thursday, January 14, 2016. The road segments included in

Table 1

Summary of Ambient Noise Measurements

Location, Duration, Existing Land Uses and, Date of Measurements

Measured Ambient Noise Levels,a (dBA) Daytime

(7 A.M. to 10 P.M.) Hourly Leq

Nighttime (10 P.M. to 7 A.M.)

Hourly Leq R1

1/14/16 10 A.M. to 11 A.M./ Thursday 75 b N/A

R2 1/15/16 ( full 24 hours )/ Friday 1/16/16 (full 24 hours)/ Saturday 1/17/16 (full 24 hours)/ Sunday 1/18/16 ( full 24 hours )/ Monday 1/18/16 ( full 24 hours )/ Tuesday

68 – 73 66 – 71 63 – 72 66 – 75 66 – 76

59 – 73 61 – 72 60 – 73 62 – 71 59 – 70

Average: 69 67 R3

1/15/16 ( full 24 hours )/ Friday 1/16/16 (full 24 hours)/ Saturday 1/17/16 (full 24 hours)/ Sunday 1/18/16 ( full 24 hours )/ Monday 1/18/16 ( full 24 hours )/ Tuesday

65 – 68 62 – 68 61 – 66 63 – 67 61 – 66

56 – 66 56 – 64 57 – 71 56 – 66 55 – 65

Average 65 63 R4

1/14/16 11 A.M. to 12 P.M./ Thursday 73 b N/A

R5 1/14/16 11 A.M. to 12 P.M./ Thursday 71 b N/A



a Detailed measured noise data, including hourly Leq levels, are included in Appendix A. b Daytime Noise Measurement c Nighttime Noise Measurement Source: PCR Services Corporation 2016.



the calibration tests were S. Figueroa Street, between Olympic Boulevard and 11th Street, S. Flower Street, between 11th Street and 12th Street, and Olympic Boulevard, between S. Figueroa Street and S. Flower Street. In these noted locations, 15-minute noise recordings were made while logging actual traffic volumes and auto fleet mix (i.e., standard automobile, medium duty truck, or heavy duty truck). The traffic counts were entered into the noise model along with the observed speed, lane configuration, and distance to the roadway to calculate the traffic noise levels. The results of the traffic noise model calibration are provided in Table 2, Traffic Noise Model Calibration Results. As indicated, the noise model results are within 1 dBA of the measured noise levels, which is within the industry standard tolerance of the noise prediction model. Therefore, the Project-specific traffic noise prediction model is considered accurate and reflective of the Project’s physical setting.

Because the monitoring data validates the use of a Project-specific traffic noise prediction model, the ambient noise environment of the Project vicinity can be characterized by 24-hour CNEL levels attributable to existing traffic on local roadways. As indicated in Table 3, Predicted Existing Vehicular Traffic Noise Levels, the calculated CNEL (at a distance of 25 feet from the roadway right-of-way) from actual existing traffic volumes on the analyzed roadway segments ranged from 56.5 dBA to 71.0 dBA for residential areas , hotel uses, and commercial areas.

1.4.3 Vibration-Sensitive Receptor Locations Typically, ground-borne vibration generated by man-made activities (i.e., rail and roadway traffic, operation of mechanical equipment and typical construction equipment) diminishes rapidly with distance from the vibration source. The Federal Transit Administration (FTA) uses a screening distance of 100 feet for highly vibration-sensitive buildings (e.g., hospitals with vibration sensitive equipment) and 50 feet for residential uses and historic buildings. When vibration-sensitive uses are within these distances from a Project Site, vibration impact analysis is required. Vibration-sensitive receptors generally include historic buildings, buildings in poor structural condition, and uses that require precision instruments (e.g., hospital operating rooms or scientific research laboratories).

Table 2

Traffic Noise Model Calibration Results

Road Segment/ Noise Measurements

Locations

Traffic Counts during noise readings, 15 minutes Measured

Traffic Noise Levels,

Leq (dBA)

Project Traffic Noise Model

Predicted Noise Levels,

Leq (dBA)

Difference between Predicted

and Measured Levels, dBA Autos

Medium Trucks a

Heavy Trucks b

S. Figueroa Street 880 36 40 75.4 76.0 -0.6 S. Flower Street 720 8 20 72.5 73.3 -0.8 Olympic Boulevard 1480 12 12 75.1 75.7 -0.6 a Medium Truck – 2 axle trucks based on field observations. b Heavy Truck – 3 or more axle trucks and buses based on field observations. Source: PCR Services Corporation 2016.



Table 3

Predicted Existing Vehicular Traffic Noise Levels

Adjacent Existing Noise Exposure

Compatibility b

Existing CNEL (dBA) at Referenced Distances from

Roadway Right-of-Way a Roadway Segment Land Use Category 25 Feet

S. Figueroa Street Between W. 8th Street and James M. Wood Boulevard Commercial Conditionally

Acceptable 69.4

Between James M. Wood Boulevard/W. 9th Street and Olympic Boulevard

Residential/ Commercial

Conditionally Acceptable 69.3

Between Olympic Boulevard and W. 11th Street

Commercial/ Hotel


Between W. 11th Street and W. 12th Street Commercial Conditionally Acceptable 70.1

Between W. 12th Street and W. Pico Boulevard Commercial Conditionally

Acceptable 70.0

S. Flower Street Between W. 8th Street and James M. Wood Boulevard/ W. 9th Street Commercial Conditionally

Acceptable 68.1

Between James M. Wood Boulevard/ W. 9th Street and Olympic Boulevard Commercial Conditionally

Acceptable 67.2


Residential/ Hotel


Between W. 11th Street and W. 12th Street Residential/ Commercial


Between W. 12th Street and W. Pico Boulevard



Olympic Boulevard

Between Georgia Street and Francisco Street Commercial Conditionally Acceptable 71.0

Between Francisco Street and S. Figueroa Street



Between S. Figueroa Street and S. Flower Street

Commercial/ Hotel


Between S. Flower Street and S. Hope Street Residential/ Commercial


Between S. Hope Street and S. Grand Avenue Residential/ Commercial


S. Grand Avenue Between Olympic Boulevard and W. 11th Street



Between W. 11th Street and W. 12th Street Residential/ Commercial


Between W. 12th Street and W. Pico Boulevard Commercial Conditionally

Acceptable 65.2

Between W. Pico Boulevard and Venice Boulevard




Table 3 (Continued)

Predicted Existing Vehicular Traffic Noise Levels


Adjacent Existing Noise Exposure

Compatibility b

Existing CNEL (dBA) at Referenced Distances from

Roadway Right-of-Way a Roadway Segment Land Use Category 25 Feet

W. 11th Street Between L.A. Live Way and S. Figueroa Street Commercial Normally Acceptable 62.2 Between S. Figueroa Street and S. Flower Street Commercial Normally Acceptable 66.2

Between S. Flower Street and S. Hope Street Commercial Normally Acceptable 62.4 Between S. Hope Street and S. Grand Avenue Commercial Normally Acceptable 62.3

W. 9th Street

Between Georgia Street and Francisco Street Commercial Conditionally Acceptable 69.4

Between Francisco Street and S. Figueroa Street Commercial Conditionally

Acceptable 68.7

Between S. Figueroa Street and S. Flower Street Commercial Conditionally

Acceptable 68.5

Between S. Flower Street and S. Hope Street Residential/ Commercial


S. Hope Street

Between W. 9th Street and Olympic Boulevard Residential/ Commercial



Residential/ Commercial Normally Acceptable 63.1

W. 12th Street Between S. Figueroa Street and S. Flower Street Commercial Normally Acceptable 56.5

Between S. Flower Street and S. Grand Avenue Commercial Normally Acceptable 59.2

W. 8th Street Between Francisco Street and S. Figueroa Street Commercial Conditionally

Acceptable 68.7

Between S. Figueroa Street and S. Flower Street Commercial Conditionally

Acceptable 68.0

W. Pico Boulevard Between S. Figueroa Street and S. Flower Street



Between S. Flower Street and S. Grand Avenue



a Calculated based on existing traffic volumes. b Based on noise levels at 25 feet distance from the roadway and residential uses if residential uses are shown along roadways. Source: PCR Services Corporation 2016.

The Petroleum Building is located immediately east of the Project Site fronting Olympic Boulevard. The Petroleum Building is a designated City Cultural-Historic Monument and could be affected by vibration caused by short-term Project construction and long-term Project operations.


2. REGULATORY SETTING AND SIGNIFICANCE THRESHOLDS

2.1 REGULATORY SETTING

2.1.1 Los Angeles Municipal Code

The City’s Noise Regulation is provided in Chapter XI of the Los Angeles Municipal Code (LAMC). Section 111.02 of the LAMC provides procedures and criteria for the measurement of the sound level of “offending” noise sources. In accordance with the LAMC, a noise level increase of 5 dBA over the existing average ambient noise level at an adjacent property line is considered a noise violation. To account for people’s increased tolerance for short-duration noise events, the Noise Regulation provides a 5 dBA allowance for noise occurring more than five but less than fifteen minutes in any one-hour period and an additional 5 dBA allowance (total of 10 dBA) for noise occurring five minutes or less in any one-hour period.8

The LAMC indicates that in cases where the actual ambient conditions are not known, the City’s presumed daytime (7:00 A.M. to 10:00 P.M.) and nighttime (10:00 P.M. to 7:00 A.M.) minimum ambient noise levels as defined in Section 111.02 of the LAMC should be used. The presumed ambient noise levels for these areas as set forth in the LAMC Sections 111.02 and 112.05 are provided in Table 4, City of Los Angeles Presumed Ambient Noise Levels. For residential-zoned areas, the presumed ambient noise level is 50 dBA during the daytime and 40 dBA during the nighttime. Section 112.02 limits increases in noise levels from air conditioning, refrigeration, heating, pumping and filtering equipment. Such equipment may not be operated in such manner as to create any noise which would cause the noise level on the premises of any other occupied property, or, if a condominium, apartment house, duplex, or attached business, within any adjoining unit, to exceed the ambient noise level by more than five (5) decibels.

8 LAMC, Chapter XI, Article I, Section 111.02-(b).

Table 4

City of Los Angeles Presumed Ambient Noise Levels

Zone

Daytime Hours (7 A.M. to 10 P.M.)

dBA (Leq)

Nighttime Hours (10 P.M. to 7 A.M.)

dBA (Leq) Residential 50 40 Commercial 60 55

Manufacturing (M1, MR1, and MR2) 60 55 Heavy Manufacturing (M2 and M3) 65 65

Source: LAMC, Section 111.03.

2. Regulatory Setting and Significance Thresholds June 2016


Section 112.05 of the LAMC sets a maximum noise level for construction equipment of 75 dBA at a distance of 50 feet when operated within 500 feet of a residential zone. Compliance with this standard is only required where “technically feasible.”9 Section 41.40 of the LAMC prohibits construction between the hours of 9:00 P.M. and 7:00 A.M. Monday through Friday, 6:00 P.M. and 8:00 A.M. on Saturday, and at any time on Sunday (i.e., construction is allowed Monday through Friday between 7:00 A.M. to 9:00 P.M.; and Saturdays and National Holidays between 8:00 A.M. to 6:00 P.M.). In general, the City’s Department of Building and Safety enforces noise ordinance provisions relative to equipment and the Los Angeles Police Department enforces provisions relative to noise generated by people.

Section 113.01 of LAMC prohibits collecting or disposing of rubbish or garbage, to operate any refuse disposal truck, or to collect, load, pick up, transfer, unload, dump, discard, or dispose of any rubbish or garbage, as such terms are defined in Section 66.00 of LAMC, within 200 feet of any residential building between the hours of 9:00 P.M. and 6:00 A.M. of the following day, unless a permit therefore has been duly obtained beforehand from the Board of Police Commissioners.

2.1.2 Guidelines for Noise-Compatible Land Uses The City has adopted local guidelines based, in part, on the community noise compatibility guidelines established by the State Department of Health Services for use in assessing the compatibility of various land use types with a range of noise levels. These guidelines are set forth in the City of L.A. CEQA Thresholds Guide in terms of the CNEL. CNEL guidelines for specific land uses are classified into four categories: (1) “normally acceptable,” (2) “conditionally acceptable,” (3) “normally unacceptable,” and (4) “clearly unacceptable.” As shown in Table 5, City of Los Angeles Land Use Compatibility for Community Noise, a CNEL value of 70 dBA is the upper limit of what is considered a “conditionally acceptable” noise environment for multi-family residential uses, although the upper limit of what is considered “normally acceptable” for multi-family residential uses is set at 65 dBA CNEL.10 New development should generally be discouraged within the “normally unacceptable” or “clearly unacceptable” categories. However, if new development does proceed, a detailed analysis of the noise reduction requirements must be made and needed noise insulation features included in the design.

2.1.3 Ground-Borne Vibration Guidelines The City of Los Angeles has not adopted policies or guidelines relative to ground-borne vibration, and defers to other authoritative sources for evaluating this. Caltrans has produced a guidance manual for evaluating potential vibration impacts (“Transportation- and Construction-Induced Vibration Guidance Manual” dated June 2004). The manual provides thresholds for potential impacts on human comfort and damage to buildings, as well as guidance for reducing potential vibration impacts and addressing vibration issues. The manual gathers data from multiple sources including the Federal Transit Administration (FTA). Tables 4, 5 and 6 within the manual provide criteria for identifying potential annoyance from vibration activity, as measured in inches per second peak particle velocity (PPV). For example, 0.035 inches per second (PPV) is identified as a level that is “distinctly“ or “barely” perceptible, 0.08/0.1 as identified “readily” or “strongly” perceptible. Levels above this range are levels that begin to annoy human beings.

9 In accordance with the City’s Noise Ordinances, “technically feasible” means that the established noise limitations can be complied

with at a project site, with the use of mufflers, shields, sound barriers, and/or other noise reduction devices or techniques employed during the operation of equipment.

June 2016 2. Regulatory Setting and Significance Thresholds


Tables 9 through 15 provide criteria for identifying potential damage to buildings. Again, the values vary greatly depending on assumptions and the types and conditions of buildings considered. Per those guidelines buildings that are extremely old and fragile can be subject to damage from vibration levels as low as 0.1 inches per second. Generally, the levels for well-constructed, more substantial buildings fall in the range of 1.0 to 2.0 inches per second (PPV). Notably, Table 10, based on FTA data, provides a conservative estimate for well-constructed buildings of 0.5 inches per second (PPV) while Tables 9, 14, and 15 assign the 0.5 standard to residential structures and some older buildings and levels of 1.0 to 2.0 inches per second (PPV) for newer, more substantial, better-engineered buildings.

10 City of L.A. CEQA Thresholds Guide, Section I.2, 2006.

Table 5

City of Los Angeles Land Use Compatibility for Community Noise

Community Noise Exposure CNEL (dBA)

Land Use Normally

Acceptable Conditionally Acceptable

Normally Unacceptable

Clearly Unacceptable

Single-Family, Duplex, Mobile Homes

50 to 60 55 to 70 70 to 75 Above 70

Multi-Family Homes 50 to 65 60 to 70 70 to 75 Above 70

Schools, Libraries, Churches, Hospitals, Nursing Homes

50 to 70 60 to 70 70 to 80 Above 80

Transient Lodging—Motels, Hotels 50 to 65 60 to 70 70 to 80 Above 80

Auditoriums, Concert Halls, Amphitheaters

— 50 to 70 — Above 65

Sports Arena, Outdoor Spectator Sports

— 50 to 75 — Above 70

Playgrounds, Neighborhood Parks 50 to 70 — 67 to 75 Above 72

Golf Courses, Riding Stables, Water Recreation, Cemeteries

50 to 75 — 70 to 80 Above 80

Office Buildings, Business and Professional Commercial

50 to 70 67 to 77 Above 75 —

Industrial, Manufacturing, Utilities, Agriculture

50 to 75 70 to 80 Above 75 —

Normally Acceptable: Specified land use is satisfactory, based upon the assumption that any buildings involved are of normal conventional construction without any special noise insulation requirements.

Conditionally Acceptable: New construction or development should be undertaken only after a detailed analysis of the noise reduction requirements is made and needed noise insulation features included in the design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice.

Normally Unacceptable: New construction or development should generally be discouraged. If new construction or development does proceed, a detailed analysis of the noise reduction requirements must be made and needed noise insulation features included in the design.

Clearly Unacceptable: New construction or development should generally not be undertaken. Source: City of L.A. CEQA Thresholds Guide, 2006.

2. Regulatory Setting and Significance Thresholds June 2016


2.2 SIGNIFICANCE THRESHOLDS Appendix G of the CEQA Guidelines provides a set of screening questions that address impacts with regard to Noise Impacts. These questions are as follows:

Would the project result in:

Exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies;

Exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels;

A substantial permanent increase in ambient noise levels in the vicinity of the project above levels existing without the project; or

A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project.

2.2.1 Construction The City of L.A. CEQA Thresholds Guide defines the following significance thresholds for construction activities lasting more than 10 days in a three month period or occurring during the hours of 9:00 P.M. and 7:00 A.M. Monday through Friday, before 8:00 A.M. or after 6:00 P.M. on Saturday, or anytime on Sunday:

NOISE-1 On-site Project construction activities cause the exterior ambient noise level to increase by 5 dBA or more at a noise-sensitive use, as measured at the property line of any sensitive use.

NOISE-2 Off-site Project construction traffic causes the exterior ambient noise level to increase by 5 dBA CNEL or more at a noise-sensitive use, as measured at the property line of any sensitive use.

2.2.2 Operation NOISE-3 The Project would cause any ambient noise levels to increase by 5 dBA, CNEL or more and the

resulting noise falls on a noise-sensitive land use within an area categorized as either “normally acceptable” or “conditionally acceptable” (see Table 5 for description of these categories); or cause ambient noise levels to increase by 3 dBA, CNEL or more and the resulting noise falls on a noise-sensitive land use within an area categorized as either “normally unacceptable” or “clearly unacceptable.”

NOISE-4 Project-related operational (i.e., non-roadway) noise sources such as outdoor activities, building mechanical/electrical equipment, etc., increase ambient noise level by 5 dBA, causing a violation of the City Noise Ordinance.

NOISE-5 The maximum noise level (Lmax) generated from the operation of the loading dock, refuse collection area, or parking structure (i.e., car alarm) exceeds the average (Leq) ambient noise level by 10 dBA.

June 2016 2. Regulatory Setting and Significance Thresholds


The City of L.A. CEQA Thresholds Guide does not recommend a significance threshold for interior residential noise levels. However, the City’s Building Code states that the interior noise level for residential units attributable to exterior noise shall not exceed a maximum of 45 dBA, CNEL. Therefore, a significant interior noise impact would result if:

NOISE-6: The Project’s residential uses are exposed to an exterior noise level of greater than 65 dBA CNEL for outdoor living areas (excluding balconies) or an interior noise level of greater than 45 dBA CNEL.

2.2.3 Ground-Borne Vibration The City of Los Angeles has not adopted a significance threshold to assess vibration impacts during construction. Thus, the FTA standards described above are used to evaluate potential impacts related to Project construction and operation.

NOISE-7 Potential Building Damage - Project construction activities cause ground-borne vibration levels to exceed 0.5-inch-per second PPV at the nearest off-site residential buildings or historic buildings.

NOISE-8 Potential Human Annoyance - Project construction and operation activities cause ground-borne vibration levels to exceed 0.035-inch-per-second PPV at nearby residential uses.


3. NOISE AND VIBRATION METHODOLOGY

3.1 METHODOLOGY

3.1.1 On-Site Construction Noise On-site construction noise impacts were evaluated by determining the noise levels generated by the different types of construction activity anticipated, calculating the construction-related noise level at nearby sensitive receptor locations, and comparing these construction-related noise levels to existing ambient noise levels (i.e., noise levels without construction noise) at those receptors. More, specifically, the following steps were undertaken to assess construction-period noise impacts.

1. Ambient noise levels at surrounding sensitive receptor locations were estimated based on field measurement data (see Table 1);

2. Typical noise levels for each type of construction equipment were obtained from the Federal Highway Administration roadway construction noise model;

3. Distances between construction site locations (noise sources) and surrounding sensitive receptors were measured using project architectural drawings and site plans and Google Earth;

4. The construction noise level was then calculated, in terms of hourly Leq, for sensitive receptor locations based on the standard point source noise-distance attenuation factor of 6.0 dBA for each doubling of distance; and

5. Construction noise levels were then compared to the construction noise significance thresholds identified below.

3.1.2 Off-Site Roadway Noise (Construction and Operations) Roadway noise impacts have been evaluated using the California Department of Transportation (Caltrans) Technical Noise Supplement (TeNS) method based on the roadway traffic volume data provided in the Traffic Study prepared for the project. This method allows for the definition of roadway configurations, barrier information (if any), and receiver locations. Roadway noise attributable to project development was calculated and compared to baseline noise levels that would occur under the “Without Project” condition.

3.1.3 Stationary Point-Source Noise (Operations) Stationary point-source noise impacts were evaluated by identifying the noise levels generated by outdoor stationary noise sources, such as rooftop mechanical equipment and loading area activity, calculating the hourly Leq noise level from each noise source at sensitive receptor property lines, and comparing such noise levels to existing ambient noise levels. More specifically, the following steps were undertaken to calculate outdoor stationary point-source noise impacts:

3. Noise and Vibration Methodology June 2016


1. Ambient noise levels at surrounding sensitive receptor locations were estimated based on field measurement data (see Table 1);

2. Distances between stationary noise sources and surrounding sensitive receptor locations were measured using project architectural drawings, Google Earth, and site plans;

3. Stationary-source noise levels were then calculated for each sensitive receptor location based on the standard point source noise-distance attenuation factor of 6.0 dBA for each doubling of distance;

4. Noise level increases were compared to the stationary source noise significance thresholds identified below; and

5. For outdoor mechanical equipment, the maximum allowable noise emissions from any and all outdoor mechanical equipment were specified such that noise levels would not exceed the significance threshold identified below.

3.1.4 Ground-Borne Vibration (Construction and Operations) Ground-borne vibration impacts were evaluated by identifying potential vibration sources, measuring the distance between vibration sources and surrounding structure locations, and making a significance determination based on the significance thresholds described below.

3.2 PROJECT CHARACTERISTICS AND PROJECT DESIGN FEATURES

3.2.1 Project Characteristics Several Project characteristics have the potential to reduce noise and vibration generation and were taken into account in the analysis of potential impacts. In accordance with LAMC requirements, construction hours for exterior construction and hauling activities would occur between the hours of 7:00 A.M. and 9:00 P.M., Monday through Friday, and 8:00 A.M. and 6:00 P.M. on Saturday. The Project contractor(s) would equip all construction equipment, fixed or mobile, with properly operating and maintained noise mufflers, consistent with manufacturers’ standards. Finally, existing regulations limit engine idling from construction equipment such as bulldozers and haul trucks. With respect to Project operation, all building outdoor mounted mechanical and electrical equipment would be designed to meet the requirements of LAMC Chapter XI, Section 112.02. Section 112.02 of the LAMC requires that any heating, ventilation, and air conditioning (HVAC) system within any zone of the City not cause an increase in ambient noise levels on any other occupied property or if a condominium, apartment house, duplex, or attached business, within any adjoining unit to exceed the ambient noise level by more than five (5) decibels. Loading area activities would occur during the hours of 7:30 A.M. to 10:00 P.M.

June 2016 3. Noise and Vibration Methodology


3.2.2 Project Design Features The following Project Design Features would reduce noise from the Project:

PDF-NOISE-1: Equipment Noise Control: The Project contractor(s) shall equip all construction equipment, fixed or mobile, with properly operating and maintained noise mufflers, consistent with manufacturers’ standards.

PDF-NOISE-2: On-site construction equipment staging area shall be located as far as feasible from on-site sensitive uses.

PDF-NOISE-3: Engine idling from construction equipment such as bulldozers and haul trucks shall be limited no more than five minutes in compliance with applicable California Air Resources Board regulations.

PDF-NOISE-4: Effective noise barriers will be designed and erected as needed to shield on-site uses from excessive construction-related noise.

PDF-NOISE-5: Future on-site residents will be notified prior to purchase/lease that construction is planned within close proximity to on-site residential uses.

PDF-NOISE-6: Air conditioners, fans, generators, and related equipment will be designed to not to exceed the ambient noise levels by more than five (5) dBA at offsite residential uses.


4. COMPLIANCE WITH NOISE AND VIBRATION STANDARDS

4.1 CONSTRUCTION NOISE

4.1.1 On-Site Construction Noise The Project would be constructed in two phases. Construction of Phase 1 of the Project is expected to commence in the third quarter of 2017 and would be completed in the second quarter of 2020. Construction of Phase 2 of the Project would begin immediately after Phase 1 and would be completed in the first quarter of 2023.

Noise impacts from construction activities are generally a function of the type of construction equipment, equipment locations, the sensitivity of nearby land uses, and the timing and duration of the noise-generating activities. Each phase of construction is typically undertaken in five stages: (1) site preparation; (2) demolition; (3) grading; (4) foundation; and (5) building construction. Each stage involves the use of different kinds of construction equipment and, therefore, has its own distinct noise characteristics. Site preparation typically involves the use of a tractor/loader/backhoe and rubber tired dozer. Demolition typically involves the use of concrete saw, dozer, and tractor/loader/backhoe. Grading typically involves the use of a drill rig, excavator, tractor/loader/backhoe, grader, rubber tired dozer, and scraper. Foundation typically involves the use of a tractor/loader/backhoe and pump. Building construction typically involves the use of cranes, a forklift, tractor/loader/backhoe, welders, a generator set, pump, air compressor, pavement equipment, paver, and roller. The Project would be constructed using typical construction techniques.

Project construction would require the use of mobile heavy equipment with high noise-level characteristics. Even with implementation of the Project characteristics cited above, individual pieces of construction equipment anticipated during Project construction could produce maximum noise levels of 74 dBA to 90 dBA at a reference distance of 50 feet from the noise source, as shown in Table 6, Construction Equipment Noise Levels. These maximum noise levels would occur when equipment is operating at full power. The estimated usage factor for the equipment is also shown in Table 6. The usage factors are based on FHWA’s Roadway Construction Noise Model User’s Guide.11 To more accurately and conservatively characterize construction-period noise levels, the average (Hourly Leq) noise level associated with each construction stage is calculated based on the quantity, type, and usage factors for each type of equipment used during each construction stage and represent multiple pieces of equipment operating simultaneously.

Construction noise levels were estimated based on an industry standard sound attenuation rate of 6 dB per doubling of distance (from the 50-foot reference distance) for point sources (e.g., construction equipment). For purposes of analysis, all construction equipment was assumed to operate simultaneously in the location closest to potentially affected residential receptors, and noise from different construction stages that could reasonably be expected to occur simultaneously was combined to develop a composite construction noise level. These assumptions result in a conservative noise scenario, since all construction equipment used in a given phase would not typically operate concurrently and at full power, and activities are routinely spread across the construction site, rather than concentrated close to the nearest noise-sensitive receptors.

June 2016 4. Compliance with Noise and Vibration Standards


A summary of construction noise impacts at the nearby existing nearby sensitive receptors is provided in Table 7, Estimate of Phase 1 Construction Noise Levels (Leq) at Existing Off-Site Sensitive Receiver Locations and Table 8, Estimate of Phase 2 Construction Noise Levels (Leq) at Existing Off-Site Sensitive Receiver Locations. Detailed noise calculations for construction activities are provided in Appendix B of this report. As shown in Table 7, construction noise levels at the nearest sensitive receptors are estimated to reach a maximum of 83 dBA at the nearest sensitive receptor, the multi-family residential uses across S. Flower Street (R3) and future multi-family residential uses across from W. 11th Street (R6), during Phase 1. As shown in Table 8, construction noise levels would reach 79 dBA at the multi-family residences (R2) across W. Olympic Boulevard and 78 dBA at the future residential uses (Olympic Tower project) during Phase 2. This would exceed the 70 dBA significance threshold at R3 during Phase 1 and the 74 dBA significance threshold at R2 and the 76 dBA significant threshold at R5 during Phase 2 (average daytime noise level of 65 dBA at R3 69 dBA at R2, and 71 dBA at R5 as shown in Table 4.G-1 plus 5 dBA).

As such, the Project would have a significant construction noise impact on the multi-family residential uses across from S. Flower Street (R3) and the future residential/hotel uses (R6) during Phase 1 and the multi-family residential uses (R2) across W. Olympic Boulevard and the future residences (Olympic Tower project, R5) during Phase 2. Mitigation measures are therefore prescribed to reduce construction noise impacts to these sensitive noise receptors, as presented below in subsection 5. Mitigation Measures, below.

11 Federal Highway Administration, Roadway Construction Noise Model User’s Guide, 2006.

Table 6

Construction Equipment Noise Levels

Equipment Estimated Usage Factor,

%

Maximum Noise Level at 50 feet from Equipment, dBA

(Lmax) Air Compressor 50 78 Concrete Saw 20 90 Crane 40 81 Drill Rig Truck 20 79 Excavator 40 81 Forklift 10 75 Generator Set 50 81 Grader 40 85 Pavement Equipment 20 90 Paver 50 77 Pump 50 81 Roller 20 80 Rubber Tired Dozer 40 82 Scraper 40 84 Tractor/Loader/Backhoe 25 80 Welder 40 74

Source: FHWA Roadway Construction Noise Model User’s Guide, 2006.

4. Compliance with Noise and Vibration Standards June 2016


Table 7

Estimate of Phase 1 Construction Noise Levels (Leq) at Existing Off-Site Sensitive Receiver Locations

Noise-Sensitive Receptor Construction Phases

Distance between Nearest Receptor and Construction

Site (feet)

Estimated Construction Noise Levels at the Noise-

Sensitive Receptor by Construction Phase,a

Hourly Leq (dBA)

Project’s Significance Threshold d

(dBA)

Exceeds Significance Threshold?

R2b Multi-family Residential Uses across Olympic Blvd.

Site Preparation Demolition Grading Foundation Building Construction

450 450 450 450 450

55 61 62 55 63

74

No No No No No

R3 Multi-family Residential Uses across S. Flower St.


80 80 80 80 80

75 81 82 75 83

70

Yes Yes Yes Yes Yes

R4b

Residential Uses Northeastern corner of Olympic Blvd. and S. Flower St.


500 500 500 500 500

54 60 61 54 62

78

No No No No No

R5

Future Residential (Olympic Tower project) and existing Hotel Uses b Northwestern corner of Olympic Boulevard and S. Figueroa Street


410 e/470 f 410 e/470 f 410 e/470 f 410 e/470 f 410 e/470 f

56 e/55 f 61 e/60 f 63 e/61 f 56 e/55 f 64 e/62 f

76

No e/No f No e/No f No e/No f No e/No f No e/No f

R6b

Existing Multi-family Residential Uses /Future Residential/Hotel Uses South of the Project Site.


300 g/ 80 h 300 g/ 80 h 300 g/ 80 h 300 g/ 80 h 300 g/ 80 h

59 g / 75 h 64 g/ 81 h 65 g/ 82 h 59 g/ 75 h 66 g/ 83 h

73

No g /Yes h No g /Yes h No g /Yes h No g /Yes h No g /Yes h

R7c

Ritz-Carlton Hotel and the Ritz-Carlton Residences west of the Project Site


600 600 600 600 600

48 53 54 48 55

80

No No No No No

a Estimated construction noise levels represent the most conservative condition when noise generators are located closest to the receptors and are expected

to last the entire construction duration. b Receptors are partially shielded from the construction site by existing buildings; such shielding is incorporated into analysis as a 5-dBA reduction in noise

levels. c Receptors are fully shielded from the construction site by existing buildings; such shielding is incorporated into analysis as a 10-dBA reduction in noise levels. d Significance Thresholds are the average measured daytime noise levels shown in Table 4.G-1 plus 5 dBA. e Future Residential (Olympic Tower project) Northwest of the Project Site f Existing Hotel Uses Northwest of the Project Site g Existing Multi-family Residential Uses South of the Project Site. h Future Residential Hotel Uses South of the Project Site Source: PCR Services Corporation 2016



Table 8

Estimate of Phase 2 Construction Noise Levels (Leq) at Existing Off-Site Sensitive Receiver Locations

Noise-Sensitive Receptor Construction

Phases

Distance between Nearest Receptor and

Construction Site (feet)

Estimated Construction Noise Levels at the Noise-Sensitive

Receptor by Construction Phase,a

Hourly Leq (dBA)

Project’s Significance Threshold d

(dBA)

Exceeds Significance Threshold?

R2 Multi-family Residential Uses across Olympic Blvd.


120 120 120 120 120

72 78 78 72 79

74

No Yes Yes No Yes

R3 Multi-family Residential Uses across S. Flower St.


250 250 250 250 250

60 66 67 60 68

70

No No No No No

R4b

Residential Uses Northeastern corner of Olympic Blvd. and S. Flower St.


300 300 300 300 300

59 65 65 59 66

78

No No No No No

R5

Future Residential (Olympic Tower project) and existing Hotel Uses b Northwestern corner of Olympic Boulevard and S. Figueroa Street


140e/180 f 140e/180 f 140e/180 f 140e/180 f 140e/180 f

71e/63 f 76e/69 f 77e/70 f 70e/63 f 78e/71 f

76

Noe/No f Yese/No f Yese/No f Noe/No f Yese/No f

R6b

Existing Multi-family Residential Uses /Future Residential/Hotel Uses South of the Project Site.


500g/250h 500g/250h 500g/250h 500g/250h 500g/250h

49g/ 60h 55g/ 66h 56g/ 67h 49g/ 60h 57g/ 68h

73

Nog/Noh Nog/Noh Nog/Noh Nog/Noh Nog/No h

R7c

Ritz-Carlton Hotel and the Ritz-Carlton Residences West of the Project Site


600 600 600 600 600

48 54 54 48 55

80

No No No No No

a Estimated construction noise levels represent the most conservative condition when noise generators are located closest to the receptors and are expected to last the entire construction duration.

b Receptors are partially shielded from the construction site by existing buildings; such shielding is incorporated into analysis as a 5-dBA reduction in noise levels.

c Receptors are fully shielded from the construction site by existing buildings; such shielding is incorporated into analysis as a 10-dBA reduction in noise levels.

d Significance Thresholds are the average measured daytime noise levels shown in Table 4.G-1 plus 5 dBA. e Future Residential (Olympic Tower project) Northwest of the Project Site f Existing Hotel Uses Northwest of the Project Site g Existing Multi-family Residential Uses South of the Project Site. h Future Residential Hotel Uses South of the Project Site Source: PCR Services Corporation 2016



4.1.2 Off-Site Construction Noise Delivery truck trips would occur throughout the construction period. Trucks traveling to and from the Project Site would be required to travel along the haul route approved by the City for the Project. It is anticipated that outbound traffic would exit the Project Site from W. 11th Street or Figueroa Street to W. 8th Street to Harbor Freeway (I-110). Inbound traffic would come from Harbor Freeway (I-110) to exit at W. 9th Street, right on S. Flower Street, right on W. 11th to the Project Site. An estimated maximum of approximately 210 haul truck trips and 12 worker trips would occur per day during Phase 2. Detailed noise calculations for construction traffic are provided in Appendix C of this report. The Project’s construction related traffic trips would generate noise levels of approximately 57.6 dBA, CNEL at 25 feet distance along W. 11th Street, 56.5 dBA along S. Figueroa Street, and 57.6 dBA along W. 8th Street, W. 9th Street, and S. Flower Street. As shown in Table 3, the existing noise levels along streets are 66.2 dBA, CNEL along W. 11th Street, 69.3 dBA along S. Figueroa Street, 68.4 along W. 8th Street, 68.7 dBA along W. 9th Street, and 65.5 dBA along S. Flower Street.

Construction traffic noise levels generated by truck trips would increase traffic noise levels along W. 11th Street by up to 0.6 dBA, along S. Figueroa Street by up to 0.2 dBA, along W. 8th Street by up to 0.3 dBA, along W. 9th Street by up to 0.3 dBA, and along S. Flower Street by up to 0.7 dBA. The noise level increases by construction related traffic trips would be below the significance threshold of 5 dBA. Therefore, off-site construction traffic noise impacts would be less than significant

4.1.3 On-Site Sensitive Receptors The effects of the Project to on-site sensitive receptors are not considered an impact to the environment under CEQA. However, due to the sensitivity of on-site receptors, the potential for construction noise to affect on-site sensitive receptors is disclosed herein. As discussed above, construction activities would temporarily increase the existing ambient noise in close proximity of the construction site within the Project areas. Existing hotel uses and Residential Tower 1 completed during Construction of Phase 1 would be noise sensitive receptors during construction of the Project. The existing on-site hotel uses and residential and hotel uses completed during Construction of Phase 1 are noise-sensitive. At various times throughout the construction phases, use of heavy duty construction equipment could be closer than 100 feet to occupied on-site habitable rooms and it will increase the ambient noise levels at on-site noise sensitive uses. PDF-NOISE-1, PDF-NOISE-2, and PDF-NOISE-3 are designed to minimize the generation of on-site noise. PDF NOISE-4 has been included to ensure appropriate noise barriers are designed and erected when construction is planned within close proximity to on-site noise-sensitive uses to minimize effects to on-site noise sensitive uses. PDF-NOISE-5 has been included to notify future on-site residential uses that construction is planned within close proximity.

4.2 PROJECT-RELATED TRAFFIC NOISE

4.2.1 Impacts Under Existing Traffic Baseline Conditions Future roadway noise levels were calculated along various arterial segments adjacent to the Project. Roadway noise attributable to Project development was calculated using the traffic noise model previously described and was compared to baseline noise levels that would occur under the “No Project” condition.



Project impacts are shown in Table 9, Off-Site Traffic Noise Impacts-Existing Baseline Conditions. As indicated, the maximum increase in Project-related traffic noise levels over existing traffic noise levels would be 1.2 dBA, CNEL, which would occur along W. 11th Street, between S. Flower Street and S. Hope Street. This increase in sound level would not exceed the threshold of a 5 dBA CNEL increase in an area characterized by normally acceptable and conditionally acceptable noise levels (see Table 3). The increase in sound level would be substantially lower at the remaining roadway segments analyzed. The Project-related noise increases would be less than the threshold and therefore less than significant, and no mitigation measures would be required.

4.2.2 Impacts Under Future Traffic Baseline Conditions Future roadway noise levels were also calculated along various arterial segments adjacent to the Project as compared to 2023 baseline traffic noise levels that would occur with implementation of the cumulative projects. Project impacts are shown in Table 10, Off-Site Traffic Noise Levels – Future 2023 Project Increment. As indicated, the maximum increase in Project-related traffic noise levels over the future traffic noise levels would be 0.7 dBA, CNEL, which would occur along W. 11th Street, between S. Flower Street and S. Hope Street. This increase in sound level would be less than the threshold of a 5 dBA CNEL increase in an

area characterized by normally acceptable and conditionally acceptable noise levels (see Table 3), such as predicted to occur along W. 11th Street, between S. Flower Street and S. Hope Street in 2023. The increase in sound due to the Project would be substantially lower at the remaining roadway segments analyzed, as vehicle volumes are lower along the remaining segments. The Project-related noise increases, when measured against the 2023 baseline conditions, would be less than one fifth of the threshold and therefore less than significant.

4.3 ON-SITE OPERATIONAL NOISE

4.3.1 Open Space A key feature of the design is the provision of a 5,000 sf public outdoor plaza along S. Figueroa Street that would support connectivity between the Project and LA LIVE while also encouraging pedestrian activity and an active street front. The outdoor plaza would incorporate landscape features, seating, and potential for public art display areas within this space. Behind and adjacent to the outdoor plaza would be commercial uses that would help activate the street edge and promote pedestrian activity. Because of its orientation and distance from residential uses to the south and east, noise associated with the use of this public plaza would be less than significant. The Project would provide open space amenities including a public plaza, Podium Garden Terrace, Hotel Rooftop Amenity Deck, and rooftop amenity decks for the residential towers as shown in Figure 2-3, in Chapter 2, Project Description of the Draft EIR.

Public Plaza on S. Figueroa Street

The nearest noise-sensitive use from the public plaza space on S. Figueroa Street is the existing residential multi-family uses, (R2) located approximately 250 feet north of the Project Site. These off-site residences will be partially shielded by Residential Tower 2. Under a conservative scenario, there could be up to



Table 9

Off-Site Traffic Noise Impacts – Existing Baseline Conditions

Roadway Segment

Calculated Traffic Noise Levels at 25 feet from Roadway, CNEL (dBA)

Exceed Threshold?

Existing a (A)

Existing with Project b

(B)

Project Increment

(B - A)

S. Figueroa Street

Between W. 8th Street and James M. Wood Boulevard 69.4 69.5 0.1 No Between James M. Wood Boulevard/W. 9th Street and Olympic Boulevard 69.3 69.4 0.1

No

Between Olympic Boulevard and W. 11th Street 70.0 70.3 0.3 No

Between W. 11th Street and W. 12th Street 70.1 70.1 0.0 No

Between W. 12th Street and W. Pico Boulevard 70.0 70.1 0.1 No

S. Flower Street

Between W. 8th Street and James M. Wood Boulevard/ W. 9th Street 68.1 68.2 0.1 No

Between James M. Wood Boulevard/ W. 9th Street and Olympic Boulevard 67.2 67.5 0.3 No

Between Olympic Boulevard and W. 11th Street 65.5 66.3 0.8 No Between W. 11th Street and W. 12th Street 66.7 66.9 0.2 No Between W. 12th Street and W. Pico Boulevard 68.2 68.3 0.1 No

Olympic Boulevard

Between Georgia Street and Francisco Street 71.0 71.2 0.2 No

Between Francisco Street and S. Figueroa Street 69.9 70.1 0.2 No

Between S. Figueroa Street and S. Flower Street 69.5 69.8 0.3 No

Between S. Flower Street and S. Hope Street 69.3 69.4 0.1 No

Between S. Hope Street and S. Grand Avenue 68.9 68.9 0.0 No

S. Grand Avenue


Between W. 11th Street and W. 12th Street 66.9 67.0 0.1 No

Between W. 12th Street and W. Pico Boulevard 66.8 66.9 0.1 No

Between W. Pico Boulevard and Venice Boulevard 66.7 66.9 0.2 No

W. 11th Street

Between L.A. Live Way and S. Figueroa Street 62.2 62.2 0.0 No




W. 9th Street





S. Hope Street

Between W. 9th Street and Olympic Boulevard 65.2 65.2 0.0 No



Table 9 (Continued)

Off-Site Traffic Noise Impacts – Existing Baseline Conditions


Roadway Segment


Exceed Threshold?

Existing a (A)

Existing with Project b

(B)

Project Increment

(B - A)

W. 12th Street


Between S. Flower Street and S. Grand Avenue 59.2 59.9 0.7 No

W. 8th Street



W. Pico Boulevard



a Existing data is taken from Table 4.G-3. Source: PCR Services Corporation 2016

Table 10

Off-Site Traffic Noise Levels – Future 2023 Project Increment

Roadway Segment


Future Project Increment

(B-A) Exceed

Threshold?

Future No Project (2023)

(A)

Future with Project (2023 Full Buildout)a

(B)

Figueroa Street Between 8th Street and James M. Wood Boulevard 70.0 70.1 0.1 No

Between James M. Wood Boulevard/9th Street and Olympic Boulevard 69.9 70.0 0.1 No

Between Olympic Boulevard and 11th Street 71.0 71.3 0.3 No

Between 11th Street and 12th Street 70.5 70.8 0.3 No Between 12th Street and Pico Boulevard 70.5 70.8 0.3 No

Flower Street Between 8th Street and James M. Wood Boulevard/9th Street 69.5 69.6 0.1 No

Between James M. Wood Boulevard/9th Street and Olympic Boulevard 67.9 68. 0.2 No


Between 11th Street and 12th Street 69.5 69.6 0.1 No


Table 10 (Continued)



Roadway Segment



(B-A) Exceed

Threshold?


(A)


(B)

Between 12th Street and Pico Boulevard 69.7 69.7 0.0 No Olympic Boulevard


Between Francisco Street and Figueroa Street 71.7 71.9 0.2 No

Between Figueroa Street and Flower Street 71.2 71.3 0.1 No

Between Flower Street and Hope Street 70.9 71.0 0.1 No Between Hope Street and Grand Avenue 70.5 70.6 0.1 No

Grand Avenue Between Olympic Boulevard and 11th Street 69.5 69.5 0.0 No

Between 11th Street and 12th Street 68.2 68.2 0.0 No Between 12th Street and Pico Boulevard 68.0 68.1 0.1 No Between Pico Boulevard and Venice Boulevard 67.7 67.8 0.1 No

11th Street Between L.A. Live Way and Figueroa Street 62.6 62.6 0.0 No


Between Flower Street and Hope Street 65.7 65.9 0.2 No Between Hope Street and Grand Avenue 65.9 66.0 0.1 No

9th Street Between Georgia Street and Francisco Street 70.3 70.4 0.1 No

Between Francisco Street and Figueroa Street 70.3 70.5 0.2 No


Between Flower Street and Hope Street 67.9 68.0 0.1 No Hope Street

Between 9th Street and Olympic Boulevard 66.1 66.1 0.0 No






Roadway Segment



(B-A) Exceed

Threshold?


(A)


(B)

12th Street Between Figueroa Street and Flower Street 59.4 59.7 0.3 No

Between Flower Street and Grand Avenue 60.1 60.6 0.5 No

8th Street Between Francisco Street and Figueroa Street 70.0 70.0 0.0 No


Pico Boulevard Between Figueroa Street and Flower Street 70.4 70.4 0.0 No

Between Flower Street and Grand Avenue 69.8 69.8 0.0 No

a Include future growth plus cumulative projects and proposed project traffic. Source: PCR Services Corporation 2016.

approximately 150 visitors to the plaza at one time. Noise from human conversation is approximately 55 dBA at a distance of 3 feet. 12 Assuming 75 visitors talking simultaneously (the half of maximum 150 visitors, the continuous noise level would be up to 74 dBA at 3 feet. This equates to a noise level of 36 dBA at 250 feet. A noise level of 36 dBA would reach the property line of the noise sensitive receptors, R2 to the north along Olympic Boulevard, and this would not increase ambient noise levels of 67 dBA during the nighttime. Therefore, impacts associated with outdoor noise within the public plaza would be less than significant.

Podium Garden Terrace

The Podium Garden Terrace would serve each of the three towers for Project residents, guests and hotel patrons. The Podium Garden Terrace would feature a bar and dining area near the Hotel Tower, open areas for adult and children recreational activities, pools, strolling/exercise areas for pets, and quiet/passive areas with shaded zones.

The nearest noise-sensitive uses from the Podium Garden Terrace are the future residences along W. 11th Street (Oceanwide Plaza Project). These residences will be located as close as approximately 80 feet to the southern edge of the Podium Garden Terrace. Under a conservative scenario, there could be up to

12 American Journal of Audiology Vol.7 21-25 October 1998. doi:10.1044/1059-0889(1998/012)



approximately 150 visitors to the Podium Garden Terrace at one time. Noise from human conversation is approximately 55 dBA at a distance of 3 feet. 13 Assuming 75 visitors talking simultaneously (the half of maximum 150 visitors from the Podium Garden Terrance), the continuous noise level would be up to 74 dBA at 3 feet. This equates to a noise level of 44 dBA at 80 feet. A noise level of 44 dBA would reach the property line of the future noise sensitive receptors to the south of the Podium Garden Terrance, and this would not increase ambient noise levels of 68 dBA. Therefore, impacts associated with outdoor noise within the Podium Garden Terrace would be less than significant at the future residences along W. 11th Street (Oceanwide Plaza Project).

The Podium Garden Terrance would be located in the middle of the proposed Hotel Tower, and Residential Towers 1 and 2, and would be partially shielded from off-site noise sensitive receptors to the north and east by Residential Towers 1 and 2. Therefore, due to orientation, shielding, distances to the existing noise sensitive receptors to the north (R2, R4 and R5) and east (R3) and noise associated with outdoor activities at the Podium Garden Terrace would be less than significant at the existing noise sensitive receptors to the north (R2, R4 and R5) and east (R3).

Hotel Roof Lounge

The top/penthouse level of the Hotel Tower would include a rooftop amenity deck with a pool, bar, lounge, and green space areas for hotel patrons and visitors. The future residences along W. 11th Street (the Oceanwide Plaza project) would be located as close as approximately 80 feet to the southern edge of the rooftop amenity deck. Under a conservative scenario, there could be up to approximately 80 attendees visitors to the rooftop amenity deck at one time on a peak weekend day. Noise from human conversation is approximately 55 dBA at a distance of 3 feet. 14 Assuming 40 visitors talking simultaneously, the continuous noise level would be up to 71 dBA at 3 feet. This equates to a noise level of 42 dBA at 80 feet. A noise level of 42 dBA would reach the property line of the future noise sensitive receptors to the south of the rooftop amenity deck, and this would not increase ambient noise levels of 68 dBA. Therefore, impacts associated with outdoor noise within the Roof Lounge would be less than significant at the future residences along W. 11th Street (Oceanwide Plaza project).

Residential Tower 1 Rooftop Amenity Deck

The top level of Residential Tower 1 would include a rooftop amenity deck for use by residents. The rooftop amenity deck on the top level of Residential Tower 1 would be located approximately 490 feet above ground. The nearest existing residential uses (R3) would be located approximately 400 lateral feet to the eastern edge of the rooftop amenity deck. The rooftop amenity deck on the top level of Residential Tower 1 would serve as a potential noise source for the nearby existing sensitive receptors, R3. Under a conservative scenario, there could be up to approximately 15 visitors to the rooftop amenity deck at one time on a peak day for Residential Tower 1. Because of its distance from the existing residential uses to the east, R3, noise associated with the use of rooftop amenity deck of Residential Tower 1 would be less than significant.

13 American Journal of Audiology Vol.7 21-25 October 1998. doi:10.1044/1059-0889(1998/012) 14 ibid



Residential Tower 2 Rooftop Amenity Deck

The rooftop amenity deck on the top level of Residential Tower 2 would be located approximately 540 feet above ground. The nearest existing residential uses (R2) along Olympic Boulevard would be located as close as approximately 120 feet to the edge of the rooftop amenity deck. The rooftop amenity deck on the top level of Residential Tower 2 would serve as a potential noise source for the nearby existing sensitive receptors, R2 along Olympic Boulevard. Under a conservative scenario, there could be up to approximately 15 visitors to the rooftop amenity deck at one time on a peak day. Noise from human conversation is approximately 55 dBA at a distance of 3 feet. 15 Assuming 15 visitors talking simultaneously, the continuous noise level would be up to 67 dBA at 3 feet. This equates to a noise level of 35 dBA at 120 feet. A noise level of 35 dBA would reach the property line of the future noise sensitive receptors to the north of the rooftop amenity deck of Residential Tower 2, and this would not increase ambient noise levels of 68 dBA at the existing sensitive uses, (R2) and impacts associated with outdoor noise within the rooftop amenity deck would be less than significant.

4.3.2 Fixed Mechanical Equipment The operation of mechanical equipment typically installed for developments like the Project, such as air conditioners, fans, generators, and related equipment, may generate audible noise levels. Project mechanical equipment including air conditioning condensers would be installed on the building rooftop, with other equipment contained within the building. Per the LAMC, rooftop mechanical equipment is required to be physically shielded from nearby land uses to attenuate noise and avoid conflicts with adjacent uses. All Project mechanical equipment would be designed with appropriate noise control devices, such as sound attenuators, acoustic louvers, or sound screens/parapet walls to comply with noise limitation requirements provided in Section 112.02 of the LAMC, which prevents the noise from such equipment from causing an increase in the ambient noise level of more than five decibels. To ensure the ability to meet this standard, PDF Noise-6 has been included. Therefore, operation of rooftop mechanical equipment on the Project building would not exceed the City’s thresholds of significance and impacts would be less than significant.

4.3.3 Loading and Refuse Collection Areas Loading for service vehicles and refuse collection areas related to hotel, residential and commercial uses would be on the ground level within the Podium. Delivery and refuse service vehicles would have direct access to this area from Olympic Boulevard and S. Flower Street. Loading dock and refuse service-related activities such as truck movements/idling and loading/unloading operations generate noise levels that have a potential to adversely impact adjacent land uses during long-term Project operations. However, because the loading areas would be fully enclosed and shielded from surrounding off-site development, noise from these areas would not increase noise levels at off-site sensitive receptor locations. Therefore, noise associated with loading, refuse collection, and related activities would be less than significant.

4.3.4 Parking Structure Vehicular access into the Podium would be from Olympic Boulevard, S. Flower Street and 11th Street. Parking access to the Podium for residences and commercial visitors would be from Olympic Boulevard. For

15 ibid



residents only, a driveway would be provided from 11th Street. A vehicle entryway to the Podium from S. Flower Street would provide access for commercial visitors and service vehicles.

For hotel visitors, a separate hotel-only motor-court drop off area would be provided off of 11th Street. Parking for the hotel guests and visitors would be located in the four levels of subterranean parking. A separate valet gate within the property at the interior of the motor-court area would provide access for valets to park hotel guest vehicles directly into the first level of subterranean parking. Parking for hotel, commercial and residential uses would be provided in up to four subterranean levels.

Automobile movements within parking structures represent the most continuous noise source and generate noise levels with the potential to adversely impact adjacent land uses during Project operations. However, because parking for the hotel guests, visitors, commercial, and residential uses would be located in subterranean levels of the Podium, Residential Tower 1, and Residential Tower 2, which are fully enclosed and contain no unobstructed openings that face toward the nearby noise sensitive uses, the noise would be fully buffered from neighboring sensitive uses. As such, impacts would be less than significant, and no mitigation measures are required.

4.3.5 Composite Noise Level Impacts from Project Operations An evaluation of the combined noise from the Project’s various operational noise sources (i.e., composite noise level) was conducted to conservatively ascertain the potential maximum Project-related noise level increase that may occur at the noise-sensitive receptors considered in this analysis. Noise sources associated with the Project include loading and refuse service area activities, traffic on nearby roadways, on-site mechanical equipment, and open space-related activities.

Based on a review of the noise-sensitive receptors and Project noise sources, the only existing noise-sensitive locations at which composite noise impacts could occur are the multi-family residences, R3, located to the east of the Project Site across S. Flower Street. The predominant Project noise source that could potentially affect these receptors would be traffic noise.

Based on the traffic noise analysis above, Project-generated traffic is expected to increase the traffic-related noise by a maximum of 0.8 dBA (CNEL) along S. Flower Street, between Olympic Boulevard and W. 11th Street, which is represented by the receptor R3. Noise associated with activities in the Project parking structure and at the loading and refuse collection areas would not increase the overall ambient noise levels in the Project vicinity. Mechanical related noise is expected to be a minimum of 10 dBA below the ambient noise levels, which would have a contribution of approximately 0.4 dBA to the composite noise level.16 Noise related to the use of on-site open space would not increase the overall ambient noise level in the Project vicinity. Overall, relative to the existing noise environment, combined noise associated with the Project is estimated to increase the ambient noise level by approximately 1.1 dBA at the nearest noise-sensitive receptors (Locations R3), or substantially less than the significance threshold of 5 dBA. Composite noise level increases at all other receptor locations are expected to be less than significant as well, given their distance from the Project Site and the presence of intervening structures. As such, the composite noise level impact due to the Project’s future operations would be less than significant.

16 Engineering Noise Control, Bies & Hansen, 1988.



4.3.6 Site Compatibility (Proposed On-Site Noise-Sensitive Uses) The Project would locate new noise-sensitive uses on the Project site in an existing urban setting. As indicated by the predicted vehicular traffic noise levels presented in Table 4.G-8, the Project’s western perimeter at the ground level along S. Figueroa Street would be exposed to maximum ambient noise levels up to 70.0 dBA, CNEL at 25 feet from S. Figueroa Street, 69.5 dBA, CNEL at 25 feet from Olympic Boulevard, and 66.2 dBA, CNEL at 25 feet from W. 11th Street. The City’s land use compatibility standard for “normally acceptable” is 65 dBA, CNEL for multi-family residential uses.

The proposed residential uses would be located from the 3rd floor and above in the Podium, Residential Tower 1, and Residential Tower 2, which would be located approximately 44 feet above ground from S. Figueroa Street, W. 11th Street, and Olympic Boulevard. Therefore, a noise level of 70.0 dBA at 25 feet from S. Figueroa Street, 69.5 dBA at 25 feet from Olympic Boulevard, and 66.2 dBA at 25 feet from W. 11th Street would be reduced to 65 dBA, CNEL at 44 feet from S. Figueroa Street, 64.6 dBA, 44 feet from Olympic Boulevard, and 61.3 dBA at 44 feet from W. 11th Street, respectively, which would meet the City’s land use compatibility standard of 65 dBA, CNEL. The proposed residential uses in the Podium, Residential Tower 1, and Residential Tower 2 would be exposed to maximum ambient noise levels up to 65 dBA, CNEL which would meet the City’s land use compatibility standard of 65 dBA, CNEL. Therefore, site compatibility impacts would be less than significant.

4.4 GROUND-BORNE VIBRATION

4.4.1 Construction Vibration

4.4.1.1 Structural Impacts

Construction activities can generate varying degrees of ground vibration, depending on the construction procedures and equipment used. The operation of construction equipment generates vibration that spreads through the ground and diminishes in amplitude with distance from the source. The effect on buildings located in the vicinity of the construction site varies, depending on soil type, ground strata, and construction characteristics of the receptor buildings. The results from vibration can range from no perceptible effects at the lowest vibration levels, to low rumbling sounds and perceptible vibration at moderate levels, to slight damage at the highest levels. Ground-borne vibration from construction activities rarely reaches levels that damage structures. The Caltrans guidance manual incorporates FTA standard vibration velocities for construction equipment operations (Table 18 of the Caltrans guidance manual). The PPV for construction equipment pieces anticipated to be used during Project construction are listed in Table 11, Typical Vibration Velocities for Potential Project Construction Equipment.

Construction of the Project would generate ground-borne construction vibration during site clearing, grading, and shoring activities. Based on the vibration data provided in Table 11, vibration velocities from operation of construction equipment would range from approximately 0.003 to 0.089 inches per second PPV at 25 feet from the source of activity.



As discussed previously, the Petroleum Building adjacent to the Project site is considered a vibration-sensitive receptor. The Petroleum Building would be located approximately 18 inches east of the subterranean Phase 2 parking structure and therefore would be the closest vibration sensitive receptor. At a maximum, the Petroleum Building could be exposed to vibration velocities up to 1.965 inches per second.17 This value would exceed the 0.50 inches per second PPV significance threshold for potential damage of historic buildings. Therefore, impacts would be significant and mitigation measures would be required.

The multi-family apartment buildings across S. Flower Street (R3) are located approximately 80 feet east of the Project Site. At the maximum, the multi-family residential buildings would be exposed to vibration velocities of up to 0.016 inches per second,18 which would not exceed the 0.50 inches per second PPV significance threshold for potential building damage for a well-built residential building. Therefore, impacts on these buildings would be less than significant. No mitigation measures would be required.

4.4.1.1 Human Annoyance

The L.A. CEQA Thresholds Guide identifies residences, schools, motels and hotels, libraries, religious institutions, hospitals, nursing homes, and parks as sensitive uses. Off-site non-residential uses such as retail and commercial uses are not considered vibration sensitive receptors for human annoyance under CEQA. The only uses in the Project vicinity that are sensitive uses are residential uses. The nearest existing off-site residential structures are multi-family residential buildings located across S. Flower Street approximately 80 feet east of the construction site. These structures would be exposed to vibration velocities from construction activities that would range from approximately from 0.001 to 0.016 inches per second PPV during construction, which would not exceed the 0.035 inches per second (PPV) perception threshold. Therefore, human annoyance from vibration at residential receptors would be less than significant. No mitigation measures would be required.

17 Vibrations estimates are based on guidance in the Transportation- and Construction-Induced Vibration Guidance Manual, California

Department of Transportation, Environmental Program, Environmental Engineering, Noise, Vibration, and Hazardous Waste Management Office, June 2004: PPVequip = PPVref (25/D)n; where PPVref = reference source vibration, D = Distance, n =factor for soil attenuation.

18 Ibid.

Table 11

Typical Vibration Velocities for the Project Construction Equipment

Equipment

Reference Vibration Velocity Levels at 25 ft, inch/second

PPVa,b Large bulldozer 0.089 Caisson drilling 0.089 Loaded trucks 0.076

Small Bulldozer 0.003

a PPV=Peak particle velocity. b FTA’s “Transit Noise and Vibration Impact Assessment”, Table 12-2.

Source: USDOT Federal Transit Administration, 2006.



4.4.2 Operational Vibration The Project’s operations would include typical commercial-grade stationary mechanical and electrical equipment, such as air handling units, condenser units, and exhaust fans, which would produce some vibration. However, the primary source of transient vibration includes passenger vehicle circulation within the proposed parking area. Ground-borne vibration generated by each of the above-mentioned activities would generate approximately up to 0.005 inches per second PPV adjacent to the Project Site. 19 The potential vibration levels from all Project operational sources at the closest existing and future sensitive receptor locations would be less than the significance threshold of 0.035 inches per second PPV for perceptibility. As such, vibration impacts associated with operation of the Project would be below the significance threshold and impacts would be less than significant. No mitigation measures would be required.

The effects of the Project to on-site sensitive receptors are not considered an impact to the environment under CEQA. However, due to the sensitivity of on-site receptors, the potential for construction vibration to affect on-site sensitive receptors is disclosed herein. Existing and future on-site noise sensitive uses, such as the existing hotel uses and future hotel uses and residential uses completed during the construction of Phase 1, are vibration-sensitive. At various times throughout the construction of the proposed Project, use of heavy duty construction equipment could be as close as 45 feet to occupied habitable rooms and it will increase the ambient vibration levels at on-site sensitive uses. PDF-NOISE-5 has been included to notify future on-site residential uses that construction is planned within close proximity.

4.5 CUMULATIVE ANALYSIS The geographic context for the analysis of cumulative noise impacts depends on the impact being analyzed. Noise is by definition a localized phenomenon, and significantly reduces in magnitude as the distance from the source increases. As such, only projects and growth due to occur in the immediate Project vicinity would be likely to contribute to cumulative noise impacts. However, the cumulative impacts on roadway noise would be affected by traffic from all of the cumulative projects throughout a larger vicinity.

As discussed in Chapter 3.0, General Description of Environmental Setting, of this Draft EIR, there are 116 cumulative projects identified in the vicinity of the Project. The seven closest cumulative projects, situated approximately 80 feet to 880 feet from the Project Site, are Cumulative Project No. 6, Amacon Project, at 1133 S. Hope Street; Cumulative Project No. 15, Apex Phase II at 700 W. 9th Street; Cumulative Project No. 54, Flower (1212) Mixed-Use at 1212 W. Flower Street; Cumulative Project No. 73, Variety Arts (Mixed-Use) at 940 S. Figueroa Street; Cumulative Project No. 95 Oceanwide Plaza at 1101 S. Flower Street; Cumulative Project No. 97, Circa at S. Figueroa; Cumulative Project No. 114, Marriott Expansion at 900 W. Olympic Boulevard and Cumulative Project No. 116 Olympic Tower at 811 W. Olympic Boulevard. All other cumulative projects are further away from the Project Site and many existing buildings are located between the Project site and other cumulative projects. The potential for noise impacts to occur are specific to the location of each cumulative project, as well as cumulative traffic on the surrounding roadway network.

19 This vibration estimate is based on data presented in the USDOT Federal Transit Administration, 2006; which is included in

Appendix A of this report.



4.5.1 Construction Noise from construction of the Project plus cumulative projects would be localized, thereby potentially affecting areas within 500 feet from the construction site. Because the timing of the construction activities for these cumulative projects cannot be defined and are beyond the control of the City and the Applicant, the quantitative analysis must consider multiple, concurrent construction projects.

Cumulative Project No. 95 and No. 97 are located 80 feet and 700 feet from the Project Site, respectively. If Cumulative Project No. 95 and No. 97 proceed simultaneously with the proposed Project, the two projects could contribute to cumulative construction noise impacts on the noise sensitive receptors located between the identified cumulative projects and the Project, including the multi-family residential uses (R3 and R6) along S. Flower Street.

Cumulative Project No. 15, No. 73, and No 116 are located 660 feet, 360 feet, 140 feet from the Project Site, respectively. If Cumulative Project No. 15, No. 73, and No. 116 proceed simultaneously with the proposed Project, the three projects could contribute to cumulative construction noise impacts on the noise sensitive receptors that are located between the identified related projects and the proposed Project, including the multi-family residential uses (R2 and R4) along W. Olympic Boulevard and existing hotel uses (R5) along S. Figueroa Street.

Those noise levels would be intermittent, temporary, would cease at the end of the construction phase, and would comply with time restrictions and other relevant provisions of the LAMC. Noise associated with construction activities would be reduced to the degree reasonably and technically feasible through proposed mitigation measures for each individual project and compliance with the City’s noise ordinances. However, such measures would only reduce noise to a degree that is technically feasible and significant residual noise could remain. Therefore, even with implementation of proposed design features and mitigation measures, if nearby cumulative projects were constructed concurrently with the Project, significant and unavoidable cumulative construction noise impacts could result at the nearby noise sensitive receptors (R2 through R6).

4.5.2 Operations As indicated in Table 12, Off-Site Traffic Noise Levels – Future 2023 Cumulative Increment, the cumulative increases in future CNEL traffic noise levels at Project buildout with future ambient growth and the 116 cumulative projects, relative to the existing baseline, would be 3.2 dB along S. Flower Street, between Olympic Boulevard and W. 11th Street, 3.5 dBA along W. 11th Street, between S. Flower Street and S. Hope Street, 3.7 dBA along w. 11th Street, between S. Hope Street and S. Grand Avenue or less in areas that can potentially be affected by the Project. This increase would not exceed the 5 dBA significance threshold applicable to segments which are predicted to experience conditionally acceptable ambient levels of noise in 2023. Therefore, cumulative noise impacts would be less than significant.

LAMC-required provisions that limit stationary-source noise from items such as roof-top mechanical equipment would ensure noise levels would be less than significant at the property line for each cumulative project. In addition, on-site noise generated by the cumulative projects would be sufficiently low that it would not result in an additive increase to Project-related noise levels. Noise from other stationary sources, including parking structures, open space use, and loading area would be limited to areas in the immediate vicinity of each cumulative project. Although a cumulative project could potentially impact an adjacent



Table 12

Off-Site Traffic Noise Levels – Future 2023 Cumulative Increment

Roadway Segment


Cumulative Increment

(B-A) Exceed

Threshold? Existing

(A)

Future with Project (2030 Build Out)a

(B)

S. Figueroa Street Between W. 8th Street and James M. Wood Boulevard 69.4 70.1 0.7 No

Between James M. Wood Boulevard/W. 9th Street and Olympic Boulevard 69.3 70.0 0.7 No


Between W. 11th Street and W. 12th Street 70.1 70.8 0.7 No Between W. 12th Street and W. Pico Boulevard 70.0 70.8 0.8 No

S. Flower Street Between W. 8th Street and James M. Wood Boulevard/ W. 9th Street 68.1 69.6 1.5 No

Between James M. Wood Boulevard/ W. 9th Street and Olympic Boulevard 67.2 68.1 0.9 No



Olympic Boulevard Between Georgia Street and Francisco Street 71.0 72.9 1.9 No





S. Grand Avenue Between Olympic Boulevard and W. 11th Street 66.2 69.5 1.4 No


Between W. Pico Boulevard and Venice Boulevard 65.2 67.8 1.1 No





Roadway Segment



(B-A) Exceed

Threshold? Existing

(A)


(B)

W. 11th Street Between L.A. Live Way and S. Figueroa Street 62.2 62.6 0.4 No




W. 9th Street Between Georgia Street and Francisco Street 69.4 70.4 1.0 No




S. Hope Street Between W. 9th Street and Olympic Boulevard 65.2 66.1 0.9 No


W. 12th Street Between S. Figueroa Street and S. Flower Street 56.5 59.7 3.2 No


W. 8th Street Between Francisco Street and S. Figueroa Street 68.7 70.0 1.3 No


W. Pico Boulevard Between S. Figueroa Street and S. Flower Street 68.4 70.4 2.0 No






Roadway Segment



(B-A) Exceed

Threshold? Existing

(A)


(B) a Include future growth plus related (cumulative) projects and proposed project traffic. Source: PCR Services Corporation, 2016.

sensitive use, that potential impact would be localized to that specific area and would not contribute to cumulative noise impact at the proposed Project Site. As the Project’s composite stationary-source impacts would be less than significant, and the Project’s contribution to cumulative traffic impacts would not be cumulatively considerable, the Project’s contribution to cumulative stationary-source noise impacts attributable to cumulative development would not be cumulatively considerable and impacts would be less than significant.

4.5.3 Ground-Borne Vibration Due to the rapid attenuation characteristics of ground-borne vibration and distance of the cumulative projects to the project site, there is no potential for cumulative construction- or operational-period impacts with respect to ground-borne vibration. Therefore, cumulative impacts would be less than significant.


5. MITIGATION MEASURES

5.1 Construction Noise and vibration Construction-related noise and vibration have the potential to result in significant noise impacts at the sensitive receptors. The noise sensitive residential use across W. Olympic Boulevard (R2), future residences (Olympic Tower project, R5), and future residential/hotel uses across W. 11th Street (R6) are located more than 20 feet above the ground level. A sound barrier could not block line-of-sight between construction equipment and sensitive receptors since sensitive receptors would be located above the top level of a sound barrier. It is not feasible to provide a sound barrier with sufficient height to block the line-of-sight for the noise sensitive receptors at R2 and R6 that are located more than 20 feet above ground level. Therefore, no feasible mitigation measures are available for noise sensitive receptors located above the top level of a sound barrier at location R2 and the future residential/hotel uses across W. 11th Street at location R6. However, a mitigation measure is available for noise sensitive receptors at location R3 at the lower floors of the building, and for potential vibration effects on the Petroleum Building. Thus, the following mitigation measures are required to minimize construction-related noise and vibration impacts:

MM- NOISE-1: Temporary noise barriers shall be used to block the line-of-site between the construction equipment and the noise-sensitive receptors during project construction, as follows:

Provide a temporary 15-foot tall construction fence equipped with noise blankets capable of achieving sound level reductions of at least 14 dBA between the Project construction site and residential uses (R3) across S. Flower Street during Construction Phase 1.

MM-NOISE-2: To avoid or minimize potential construction vibration damage to finish materials on the Petroleum Building, the condition of such materials shall be documented by a qualified preservation consultant, prior to initiation of construction. During construction, the contractor shall install and maintain at least two continuously operational automated vibrational monitors on the Petroleum Building. The monitors must be capable of being programmed with two predetermined vibratory velocities levels: a first-level alarm equivalent to a 0.45 inches per second at the face of the building and a regulatory alarm level equivalent to 0.5 inches per second at the face of the building. The monitoring system must produce real-time specific alarms (via text message and/or email to on-site personnel) when velocities exceed either of the predetermined levels. In the event of a first-level alarm, feasible steps to reduce vibratory levels shall be undertaken, including but not limited to halting/staggering concurrent activities and utilizing lower-vibratory techniques. In the event of an exceedance of the regulatory level, work in the vicinity shall be halted and the Petroleum Building visually inspected for damage. Results of the inspection must be logged. In the event damage occurs to historic finish materials due to construction vibration, such materials shall be repaired in consultation with a qualified preservation consultant, and if warranted, in a manner that meets the Secretary of the Interior’s Standards.

5. mitigation measures June 2016


5.2 Operational Noise and Vibration No mitigation measures are necessary.


6. SUMMARY OF RESULTS

Noise and vibration levels associated with the project have been evaluated to determine the level of impact from construction activities and future operations of the project.

6.1 CONSTRUCTION Construction-related noise has the potential to result in a significant noise impact at the sensitive receptor locations: at the existing residential receptors along Olympic Boulevard (R2) and S. Flower Street (R3) and future residential receptors along W. 11th Street. MM-NOISE-1 provides for a fence with sound blankets that would achieve noise reductions of at least 14 dBA between the site of Project construction and the multi-family residential uses across S. Figueroa Street. Although the noise reduction provided by the noise barrier would be considered a substantial reduction, construction noise levels would still increase the daytime ambient noise level above the 5-dBA significance threshold at the upper floors (i.e. 3rd floor to top floor) of the mixed-use residential uses (R3) across S. Flower Street. The upper floors of the mixed-use residential uses (R3) would not have noise reductions by the sound barrier since the proposed sound barrier would not block the line of sight between the construction site and upper floors of the mixed-use residential uses (R3). Thus, construction noise impacts would be significant and unavoidable at the mixed-use residential uses (R2 and R3). In regard to the future residential uses (Olympic Tower project, R5) and the future residential/hotel uses across W. 11th Street (R6), the residential units and hotel rooms being constructed are to be located at the upper floors such that a sound barrier would not be feasible to reduce construction noise levels. Thus, construction noise impacts would be significant and unavoidable at both the project- and cumulative-level.

With the implementation of MM Noise-2, vibration velocities in excess of the threshold would transmit an alarm to on-site personnel with authorization to halt work in the vicinity. Furthermore, in the event damage occurs to historic finish materials due to construction vibration, such materials would be repaired in consultation with a qualified preservation consultant in a manner that meets the Secretary of the Interior’s Standards. Thus, implementation of MM Noise-2 would ensure vibration impacts on the Petroleum Building would be less than significant. However, that measure requires the consent of that property owner, and that owner may not agree. Therefore, this analysis conservatively assumes that impacts to the historic Petroleum Building would be significant and unavoidable. Impacts to human annoyance would be less than significant.

6.2 OPERATION As demonstrated above, operation of the Project would not result in any significant noise or vibration impacts to off-site noise sensitive receptors. As such, operational noise and vibration impacts would be less than significant.

1020 S. Figueroa Street Project Draft EIR Appendix, Noise Worksheets

1 Ambient Noise and Vibration Data

2 Construction Noise Calculations

3 Off-Site Construction Traffic Noise Calculations

4 Traffic Noise Model Calibration Results

5 Off-Site Traffic Noise Calculations

Appendix 1 Ambient Noise and Vibration Data

Measured Ambient Noise Levels

Project: 1020 S. Figueroa StreetLocation: R2 - Northern Property LineSources: Ambient

Date: January 15, 2016

HNL,TIME dB(A)

12:00 AM 63.71:00 AM 64.12:00 AM 62.33:00 AM 59.24:00 AM 62.75:00 AM 65.76:00 AM 69.67:00 AM 70.18:00 AM 72.79:00 AM 69.5

10:00 AM 70.211:00 AM 69.112:00 PM 69.11:00 PM 70.32:00 PM 69.23:00 PM 71.74:00 PM 71.25:00 PM 69.96:00 PM 71.27:00 PM 68.38:00 PM 71.79:00 PM 70.3

10:00 PM 73.211:00 PM 69.9

CNEL, dB(A): 75.0

NOTES:

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10:00 PM 67.011:00 PM 71.5

CNEL, dB(A): 73.3

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10:00 PM 67.111:00 PM 64.1

CNEL, dB(A): 74.8

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10:00 PM 68.711:00 PM 64.7

CNEL, dB(A): 74.2

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10:00 PM 69.911:00 PM 63.8

CNEL, dB(A): 73.3

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Project: 1020 S. Figueroa StreetLocation: R3 - Eastern Property LineSources: Ambient


HNL,TIME dB(A)



10:00 PM 64.411:00 PM 62.2

CNEL, dB(A): 69.6

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CNEL, dB(A): 68.8

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10:00 PM 63.411:00 PM 60.3

CNEL, dB(A): 70.8

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10:00 PM 63.711:00 PM 61.8

CNEL, dB(A): 69.2

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HNL,TIME dB(A)



10:00 PM 63.711:00 PM 60.0

CNEL, dB(A): 68.5

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TRANSIT NOISE AND VIBRATION IMPACT ASSESSMENT

FTA-VA-90-1003-06 May 2006

Office of Planning and Environment Federal Transit Administration

Chapter 10: General Vibration Assessment 10-3

The curves in Figure 10-1 are based on measurements of ground-borne vibration at representative North American transit systems. The top curve applies to trains that are powered by diesel or electric locomotives. It includes intercity passenger trains and commuter rail trains. The curve for rapid transit rail cars covers both heavy and light-rail vehicles on at-grade and subway track. It is somewhat surprising that subway and at-grade track can be represented by the same curve since ground-borne vibration created by a train operating in a subway has very different characteristics than vibration from at-grade track. However, in spite of these differences, the overall vibration velocity levels are comparable. Subways tend to have more vibration problems than at-grade track. This is probably due to two factors: (1) subways are usually located in more densely developed areas, and (2) the airborne noise is usually a more serious problem for at-grade systems than the ground-borne vibration. Another difference between subway and at-grade track is that the ground-borne vibration from subways tends to be higher frequency than the vibration from at-grade track, which makes the ground-borne noise more noticeable.

50

55

60

65

70

75

80

85

90

95

100

RM

S V

eloc

ity le

vel,

VdB

re 1

mic

ro in

./sec

Rapid Transit or Light Rail Vehicles (50 mph)

Rubber-TiredVehicles(30 mph)

Locomotive Powered Passenger or Freight (50 mph)

10 20 30 40 50 60 80 100 150 200 300

Distance from track centerline, ft (Use diagonal distance for underground systems)

Figure 10-1. Generalized Ground Surface Vibration Curves

The curves in Figure 10-1 were developed from many measurements of ground-borne vibration. Experience with ground-borne vibration data is that, for any specific type of transit mode, a significant variation in vibration levels under apparently similar conditions is not uncommon. The curves in Figure

PPV 0.005 in/sec

RMS 0.0013 in/sec1.00E-06 20*log(V/Vref) Vref = 0.000001 in/sec

VdB 62 1 u /sec

Appendix 2 Construction Noise Calculations

Project: 1020 S. Figueroa StreetPhase 1

Construction Phase: Site PreparationReceptor: R2

Construction Equipment

No. of Equip.

(A)

Reference Noise Level at

50ft, Lmax (B)

Daily Usage Factor (C)

Distance to Receptor, ft (D)

Estimated Noise

Shielding, dBA (E )

Construction Equipment Noise

Level at A Sensitive Receptor Location

(F)Rubber Tired Dozers 1 82 40% 450 5 54Tractors/Loaders/Backhoes 1 80 25% 450 5 50

Construction Hour: 12 Hours during daytime (7 am to 7 pm)

0 Hours during evening (7 pm to 10 pm)

0 Hours during nighttime (10 pm to 7 am)

Construction Noise Level at R2 55 dBA, Leq

Source for Ref. Noise Levels: LA CEQA Guides, 2006 & FHWA RCNM, 2005

Combined Noise Levels of Each Construction Equipment Noise Level at A Sensitive Receptor Location

Construction Noise Levels of Each Construction Equipment at A Sensitive Receptor

dBA, Leq = [AxB‐20Log(De/50)‐E+10Log(C/100)]

N:\Active Projects\LUXE Hotel\Construction Cals\Construction - Luxe Ph 1


Construction Phase: Demolition `

Receptor: R2


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )



(F)Rubber Tired Dozers 1 82 40% 450 5 54Concrete Saw 1 90 20% 450 5 59Tractors/Loaders/Backhoes 1 80 25% 450 5 50











Construction Phase: GradingReceptor: R2


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )



(F)Excavators 1 81 40% 450 5 53Graders 1 85 40% 450 5 57Rubber Tired Dozers 1 82 40% 450 5 54Scrapers 1 84 40% 450 5 56Tractors/Loaders/Backhoes 1 80 25% 450 5 50Drill Rig Truck 1 79 20% 450 5 48











Construction Phase: FoundationReceptor: R2


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )



(F)Tractors/Loaders/Backhoes 1 80 25% 450 5 50Pumps 1 81 50% 450 5 54











Construction Phase: Building ConstructionReceptor: R2


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )



(F)Cranes 1 81 40% 450 5 53Forklifts 1 75 10% 450 5 41Tractors/Loaders/Backhoes 1 80 25% 450 5 50Welders 1 74 40% 450 5 46Generator Sets 1 81 50% 450 5 54Pumps 1 81 50% 450 5 54Air Compressor 1 78 50% 450 5 51Pavement Scarifier 1 90 20% 450 5 59Paver 1 77 50% 450 5 50Roller 1 80 20% 450 5 49













No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R3


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R4


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: Site PreparationReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )







Construction Noise Level at Future R 56 dBA, Leq








Receptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: GradingReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: FoundationReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: Building ConstructionReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R5


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R6


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R7


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R2


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )



(F)Rubber Tired Dozers 1 82 40% 120 0 70Concrete Saw 1 90 20% 120 0 75Tractors/Loaders/Backhoes 1 80 25% 120 0 66Excavator 1 81 40% 120 0 69













No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R3


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R4


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: Site PreparationReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: GradingReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: FoundationReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )














Construction Phase: Building ConstructionReceptor: Future Residential Uses (Olympic Tower project)


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R5


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R6


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )















Receptor: R7


No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )
















No. of Equip.

(A)


50ft, Lmax (B)



Estimated Noise

Shielding, dBA (E )













Appendix 3 Off-Site Construction Traffic Noise Calculations

Off-Site Traffic Noise Calculations

Project: 1020 S. Figueroa Street

Off-Site Construction Truck Noise LevelsExisting

Roadway/Segment AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet11th Street 190 63.6 60.6 58.8 60.6 57.6 55.8S. Figueroa Street 190 61.6 59.5 58.1 58.6 56.5 55.1W. 8th Street 190 63.6 60.6 58.8 60.6 57.6 55.89th Street 190 63.6 60.6 58.8 60.6 57.6 55.8S. Flower Street 190 63.6 60.6 58.8 60.6 57.6 55.8Future No Project

Roadway/Segment AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet11th Street 0 - - - - - -S. Figueroa Street 0 - - - - - -W. 8th Street 0 - - - - - -9th Street 0 - - - - - -S. Flower Street 0 - - - - - -Future With Project

Roadway/Segment AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet11th Street 0 - - - - - -S. Figueroa Street 0 - - - - - -W. 8th Street 0 - - - - - -9th Street 0 - - - - - -S. Flower Street 0 - - - - - -

Summary

Roadway/Segment11th Street - - - -S. Figueroa Street - - - -W. 8th Street - - - -9th Street - - - -S. Flower Street - - - -

CNEL

CNEL

CNEL

CNEL

LeqTraffic Volumes

Traffic Volumes

Traffic Volumes

Leq

Leq

At ROWProject

IncrementCumulative Increment

Project Increment


25 ft. from ROW

TENS 1.1 (Trucks) - Luxe 4/27/2016

Appendix 4 Traffic Noise Model Calibration Results

Traffic Noise Model Calibration

Project: 1020 S. Figueroa StreetTraffic Noise Model CalibrationExisting

Roadway/Segment AM PM ADT ROW 15 Feet 25 Feet ROW 15 Feet 25 FeetS. Figueroa Street 45888 77.9 76.0 75.1 74.9 73.1 72.1S. Flower Street 35904 74.9 73.3 72.4 71.9 70.3 69.5Olympic Boulevard 72192 78.3 76.6 75.7 75.4 73.6 72.7

0 0 - - - - - -0 0 - - - - - -

Future No Project

Roadway/Segment AM PM ADT ROW 15 Feet 25 Feet ROW 15 Feet 25 FeetS. Figueroa Street 0 - - - - - -S. Flower Street 0 - - - - - -Olympic Boulevard 0 - - - - - -

0 0 - - - - - -0 0 - - - - - -

Future With Project

Roadway/Segment AM PM ADT ROW 15 Feet 25 Feet ROW 15 Feet 25 FeetS. Figueroa Street 0 - - - - - -S. Flower Street 0 - - - - - -Olympic Boulevard 0 - - - - - -

0 0 - - - - - -0 0 - - - - - -

Summary

Roadway/SegmentS. Figueroa Street - - - -S. Flower Street - - - -Olympic Boulevard - - - -

0 - - - -0 - - - -

Project Increment

Traffic Volumes

Leq

Leq


Traffic Volumes

Project Increment


15 ft. from ROW At ROW

CNEL

CNEL

CNEL

CNEL

LeqTraffic Volumes

TENS 0.1 (Luxe) - Calibration 4/27/2016

Appendix 5 Off-Site Traffic Noise Calculations

Roadway Traffic Noise Calculations


SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetFigueroa Street between 8th St and James M. Wood Boulevard/9th 40 2200 1622 0 70.5 68.2 66.7 71.7 69.4 67.9Figueroa Street between James M. Wood Boulevard/9th Street and 40 2040 1542 0 70.5 68.1 66.5 71.8 69.3 67.8Figueroa Street between Olympic Blvd and 11th St 40 2147 2140 0 71.5 68.7 67.1 72.8 70.0 68.3Figueroa Street between 11th St and 12th St 40 2196 2085 0 71.6 68.8 67.2 72.9 70.1 68.4Figueroa Street between 12th St and Pico Blvd 40 2178 1969 0 71.6 68.8 67.1 72.8 70.0 68.3



CNELSummary 25 ft. from ROW At ROW % of ADT

Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Figueroa Street between 8th St and James M. Wood Boulevard/9th 0.1 0.7 0.1 0.6 Medium Truck 1.6% 0.2% 0.2% 2.0%Figueroa Street between James M. Wood Boulevard/9th Street and 0.1 0.7 0.1 0.6 Heavy Truck 0.8% 0.1% 0.1% 1.0%Figueroa Street between Olympic Blvd and 11th St 0.3 1.3 0.3 1.3 80.0% 10.0% 10.0% 100.0%Figueroa Street between 11th St and 12th St 0.3 0.7 0.3 0.7Figueroa Street between 12th St and Pico Blvd 0.3 0.8 0.3 0.8

Traffic Volumes

CNEL

CNEL

CNEL

Leq

Traffic Volumes Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

TENS 1.1 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetFlower Street between 8th St and James M. Wood Boulevard/9th S 35 1291 2103 0 69.3 66.9 65.3 70.5 68.1 66.5Flower Street between James M. Wood Boulevard/9th Street and O 35 729 1724 0 68.5 66.0 64.5 69.7 67.2 65.7Flower Street between Olympic Blvd and 11th St 35 750 1155 0 66.7 64.3 62.7 67.9 65.5 63.9Flower Street between 11th St and 12th St 35 755 1256 0 68.7 65.5 63.7 69.9 66.7 64.9Flower Street between 12th St and Pico Blvd 35 544 1660 0 70.6 67.0 65.1 71.8 68.2 66.3




Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Flower Street between 8th St and James M. Wood Boulevard/9th S 0.1 1.5 0.1 1.5 Medium Truck 1.6% 0.2% 0.2% 2.0%Flower Street between James M. Wood Boulevard/9th Street and O 0.2 0.9 0.2 0.9 Heavy Truck 0.8% 0.1% 0.1% 1.0%Flower Street between Olympic Blvd and 11th St 0.5 3.2 0.5 3.2 80.0% 10.0% 10.0% 100.0%Flower Street between 11th St and 12th St 0.1 2.9 0.0 2.9Flower Street between 12th St and Pico Blvd 0.0 1.5 0.1 1.5

CNEL

Leq

Traffic Volumes Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

TENS 1.2 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetOlympic Boulevard between Georgia St and Francisco St 40 2641 2815 0 72.4 69.7 68.1 73.6 71.0 69.3Olympic Boulevard between Francisco St and Figueroa St 40 2451 2669 0 70.7 68.6 67.3 71.9 69.9 68.5Olympic Boulevard between Figueroa St and Flower St 40 2332 2471 0 70.3 68.3 66.9 71.5 69.5 68.1Olympic Boulevard between Flower St and Hope St 40 2172 2148 0 70.4 68.1 66.6 71.6 69.3 67.9Olympic Boulevard between Hope St and Grand Ave 40 1870 1937 0 69.9 67.6 66.2 71.1 68.9 67.4




Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Olympic Boulevard between Georgia St and Francisco St 0.2 1.9 0.1 1.9 Medium Truck 1.6% 0.2% 0.2% 2.0%Olympic Boulevard between Francisco St and Figueroa St 0.2 2.0 0.2 2.0 Heavy Truck 0.8% 0.1% 0.1% 1.0%Olympic Boulevard between Figueroa St and Flower St 0.1 1.8 0.2 1.9 80.0% 10.0% 10.0% 100.0%Olympic Boulevard between Flower St and Hope St 0.1 1.7 0.0 1.6Olympic Boulevard between Hope St and Grand Ave 0.1 1.7 0.1 1.8

CNEL

Leq

Traffic Volumes Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

TENS 1.3 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetGrand Avenue between Olympic Blvd and 11th St 35 700 1631 0 70.5 66.9 65.0 71.7 68.1 66.2Grand Avenue between 11th St and 12th St 35 688 1517 0 68.4 65.7 64.1 69.6 66.9 65.3Grand Avenue between 12th Street and Pico Blvd 35 599 1547 0 68.0 65.5 64.0 69.2 66.8 65.2Grand Avenue between Pico Blvd and Venice Blvd 35 616 1545 0 68.0 65.5 64.0 69.2 66.7 65.2

0 35 0 - - - - - -


0 35 0 - - - - - -


0 35 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Grand Avenue between Olympic Blvd and 11th St 0.0 1.4 0.1 1.4 Medium Truck 1.6% 0.2% 0.2% 2.0%Grand Avenue between 11th St and 12th St 0.0 1.3 0.1 1.3 Heavy Truck 0.8% 0.1% 0.1% 1.0%Grand Avenue between 12th Street and Pico Blvd 0.1 1.3 0.1 1.3 80.0% 10.0% 10.0% 100.0%Grand Avenue between Pico Blvd and Venice Blvd 0.1 1.1 0.1 1.1

0 - - - -

CNEL

Leq

Traffic Volumes Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

TENS 1.4 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet11th Street between L.A. Live Wy and Figueroa St 40 153 341 0 63.9 61.0 59.2 65.2 62.2 60.411th Street between Figueroa St and Flower St 40 275 862 0 68.0 65.0 63.2 69.2 66.2 64.411th Street between Flower St and Hope St 35 228 489 0 64.1 61.2 59.4 65.3 62.4 60.611th Street between Hope St and Grand Ave 35 290 487 0 64.1 61.1 59.4 65.3 62.3 60.6

0 0 0 - - - - - -


0 0 0 - - - - - -


0 0 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%11th Street between L.A. Live Wy and Figueroa St 0.0 0.4 0.1 0.4 Medium Truck 1.6% 0.2% 0.2% 2.0%11th Street between Figueroa St and Flower St 0.7 2.1 0.7 2.1 Heavy Truck 0.8% 0.1% 0.1% 1.0%11th Street between Flower St and Hope St 0.2 3.5 0.2 3.6 80.0% 10.0% 10.0% 100.0%11th Street between Hope St and Grand Ave 0.1 3.7 0.0 3.6

0 - - - -

Traffic Volumes

CNEL

CNEL

CNEL

Leq

Traffic Volumes Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

TENS 1.5 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet9th Street between Georgia St and Francisco St 35 2180 1482 0 71.7 68.2 66.2 73.0 69.4 67.59th Street between Francisco St and Figueroa St 40 1891 1467 0 69.8 67.5 66.0 71.0 68.7 67.39th Street between Figueroa St and Flower St 40 1389 1324 0 70.5 67.3 65.5 71.7 68.5 66.79th Street between Flower St and Hope St 40 754 835 0 66.7 64.2 62.7 67.9 65.4 63.9

0 0 0 - - - - - -


0 0 0 - - - - - -


0 0 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%9th Street between Georgia St and Francisco St 0.1 1.0 0.0 0.9 Medium Truck 1.6% 0.2% 0.2% 2.0%9th Street between Francisco St and Figueroa St 0.2 1.8 0.2 1.8 Heavy Truck 0.8% 0.1% 0.1% 1.0%9th Street between Figueroa St and Flower St 0.2 2.9 0.2 2.9 80.0% 10.0% 10.0% 100.0%9th Street between Flower St and Hope St 0.1 2.6 0.2 2.6

0 - - - -

Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

CNEL

Leq

Traffic Volumes

TENS 1.6 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetHope Street between 9th St and Olympic Blvd 35 660 882 0 67.2 64.0 62.1 68.4 65.2 63.3Hope Street between Olympic Blvd 11th St 35 504 661 0 64.3 61.8 60.3 65.5 63.1 61.512th Street between Figueroa St and Flower St 35 116 137 0 58.0 55.3 53.7 59.2 56.5 54.912th Street between Flower St and Grand Ave 35 236 213 0 61.0 58.0 56.2 62.2 59.2 57.4

0 35 0 - - - - - -


0 35 0 - - - - - -


0 35 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Hope Street between 9th St and Olympic Blvd 0.0 0.9 0.0 1.0 Medium Truck 1.6% 0.2% 0.2% 2.0%Hope Street between Olympic Blvd 11th St 0.0 1.2 0.0 1.2 Heavy Truck 0.8% 0.1% 0.1% 1.0%12th Street between Figueroa St and Flower St 0.3 3.2 0.2 3.1 80.0% 10.0% 10.0% 100.0%12th Street between Flower St and Grand Ave 0.5 1.4 0.5 1.4

0 - - - -

CNEL

Leq

Traffic Volumes Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

TENS 1.7 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet8th Street between Francisco St and Figueroa St 40 1358 1757 0 69.9 67.5 65.9 71.1 68.7 67.18th Street between Figueroa St and Flower St 40 1264 1518 0 69.3 66.8 65.3 70.5 68.0 66.5Pico Boulevard between Figueroa St and Flower St 40 1124 1485 0 69.9 67.1 65.5 71.2 68.4 66.7Pico Boulevard between Flower St and Grand Ave 40 1023 1246 0 70.1 66.8 65.0 71.3 68.0 66.2

0 0 0 - - - - - -


0 0 0 - - - - - -


0 0 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%8th Street between Francisco St and Figueroa St 0.0 1.3 0.0 1.4 Medium Truck 1.6% 0.2% 0.2% 2.0%8th Street between Figueroa St and Flower St 0.0 1.5 0.0 1.4 Heavy Truck 0.8% 0.1% 0.1% 1.0%Pico Boulevard between Figueroa St and Flower St 0.0 2.0 0.0 2.0 80.0% 10.0% 10.0% 100.0%Pico Boulevard between Flower St and Grand Ave 0.0 1.8 0.0 1.8

0 - - - -

Leq

Existing

Future No Project

Future With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

CNEL

Leq

Traffic Volumes

TENS 1.8 Luxe 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetFigueroa Street between 8th St and James M. Wood Boulevard/9th 40 0 - - - - - -Figueroa Street between James M. Wood Boulevard/9th Street and 40 0 - - - - - -Figueroa Street between Olympic Blvd and 11th St 40 0 - - - - - -Figueroa Street between 11th St and 12th St 40 0 - - - - - -Figueroa Street between 12th St and Pico Blvd 40 0 - - - - - -




Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Figueroa Street between 8th St and James M. Wood Boulevard/9th 0.1 - 0.1 - Medium Truck 1.6% 0.2% 0.2% 2.0%Figueroa Street between James M. Wood Boulevard/9th Street and 0.1 - 0.1 - Heavy Truck 0.8% 0.1% 0.1% 1.0%Figueroa Street between Olympic Blvd and 11th St 0.3 - 0.3 - 80.0% 10.0% 10.0% 100.0%Figueroa Street between 11th St and 12th St 0.0 - 0.0 -Figueroa Street between 12th St and Pico Blvd 0.1 - 0.1 -

CNEL

Leq

Traffic Volumes Leq

Existing

Existing With Project

Leq

Traffic Volumes

Traffic Volumes

CNEL

CNEL

TENS 1.9 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetFlower Street between 8th St and James M. Wood Boulevard/9th S 35 0 - - - - - -Flower Street between James M. Wood Boulevard/9th Street and O 35 0 - - - - - -Flower Street between Olympic Blvd and 11th St 35 0 - - - - - -Flower Street between 11th St and 12th St 35 0 - - - - - -Flower Street between 12th St and Pico Blvd 35 0 - - - - - -




Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Flower Street between 8th St and James M. Wood Boulevard/9th S 0.1 - 0.1 - Medium Truck 1.6% 0.2% 0.2% 2.0%Flower Street between James M. Wood Boulevard/9th Street and O 0.3 - 0.2 - Heavy Truck 0.8% 0.1% 0.1% 1.0%Flower Street between Olympic Blvd and 11th St 0.8 - 0.9 - 80.0% 10.0% 10.0% 100.0%Flower Street between 11th St and 12th St 0.2 - 0.2 -Flower Street between 12th St and Pico Blvd 0.1 - 0.0 -

Traffic Volumes

CNEL

CNEL

CNEL

Leq

Traffic Volumes Leq

Existing


Leq

Traffic Volumes

TENS 1.10 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetOlympic Boulevard between Georgia St and Francisco St 40 0 - - - - - -Olympic Boulevard between Francisco St and Figueroa St 40 0 - - - - - -Olympic Boulevard between Figueroa St and Flower St 40 0 - - - - - -Olympic Boulevard between Flower St and Hope St 40 0 - - - - - -Olympic Boulevard between Hope St and Grand Ave 40 0 - - - - - -




Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Olympic Boulevard between Georgia St and Francisco St 0.2 - 0.2 - Medium Truck 1.6% 0.2% 0.2% 2.0%Olympic Boulevard between Francisco St and Figueroa St 0.2 - 0.2 - Heavy Truck 0.8% 0.1% 0.1% 1.0%Olympic Boulevard between Figueroa St and Flower St 0.3 - 0.3 - 80.0% 10.0% 10.0% 100.0%Olympic Boulevard between Flower St and Hope St 0.1 - 0.1 -Olympic Boulevard between Hope St and Grand Ave 0.0 - 0.1 -

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CNEL

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TENS 1.11 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetGrand Avenue between Olympic Blvd and 11th St 35 0 - - - - - -Grand Avenue between 11th St and 12th St 35 0 - - - - - -Grand Avenue between 12th Street and Pico Blvd 35 0 - - - - - -Grand Avenue between Pico Blvd and Venice Blvd 35 0 - - - - - -

0 35 0 - - - - - -


0 35 0 - - - - - -


0 35 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Grand Avenue between Olympic Blvd and 11th St 0.1 - 0.0 - Medium Truck 1.6% 0.2% 0.2% 2.0%Grand Avenue between 11th St and 12th St 0.1 - 0.1 - Heavy Truck 0.8% 0.1% 0.1% 1.0%Grand Avenue between 12th Street and Pico Blvd 0.1 - 0.1 - 80.0% 10.0% 10.0% 100.0%Grand Avenue between Pico Blvd and Venice Blvd 0.2 - 0.1 -

0 - - - -

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CNEL

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TENS 1.12 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet11th Street between L.A. Live Wy and Figueroa St 40 0 - - - - - -11th Street between Figueroa St and Flower St 40 0 - - - - - -11th Street between Flower St and Hope St 35 0 - - - - - -11th Street between Hope St and Grand Ave 35 0 - - - - - -

0 0 0 - - - - - -


0 0 0 - - - - - -


0 0 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%11th Street between L.A. Live Wy and Figueroa St 0.0 - 0.0 - Medium Truck 1.6% 0.2% 0.2% 2.0%11th Street between Figueroa St and Flower St 1.0 - 1.0 - Heavy Truck 0.8% 0.1% 0.1% 1.0%11th Street between Flower St and Hope St 1.2 - 1.3 - 80.0% 10.0% 10.0% 100.0%11th Street between Hope St and Grand Ave 1.1 - 1.1 -

0 - - - -

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CNEL

TENS 1.13 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet9th Street between Georgia St and Francisco St 35 0 - - - - - -9th Street between Francisco St and Figueroa St 40 0 - - - - - -9th Street between Figueroa St and Flower St 40 0 - - - - - -9th Street between Flower St and Hope St 40 0 - - - - - -

0 0 0 - - - - - -


0 0 0 - - - - - -


0 0 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%9th Street between Georgia St and Francisco St 0.1 - 0.0 - Medium Truck 1.6% 0.2% 0.2% 2.0%9th Street between Francisco St and Figueroa St 0.2 - 0.2 - Heavy Truck 0.8% 0.1% 0.1% 1.0%9th Street between Figueroa St and Flower St 0.2 - 0.3 - 80.0% 10.0% 10.0% 100.0%9th Street between Flower St and Hope St 0.3 - 0.2 -

0 - - - -

Traffic Volumes

CNEL

CNEL

CNEL

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TENS 1.14 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 FeetHope Street between 9th St and Olympic Blvd 35 0 - - - - - -Hope Street between Olympic Blvd 11th St 35 0 - - - - - -12th Street between Figueroa St and Flower St 35 0 - - - - - -12th Street between Flower St and Grand Ave 35 0 - - - - - -

0 35 0 - - - - - -


0 35 0 - - - - - -


0 35 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%Hope Street between 9th St and Olympic Blvd 0.0 - 0.0 - Medium Truck 1.6% 0.2% 0.2% 2.0%Hope Street between Olympic Blvd 11th St 0.0 - 0.0 - Heavy Truck 0.8% 0.1% 0.1% 1.0%12th Street between Figueroa St and Flower St 0.5 - 0.4 - 80.0% 10.0% 10.0% 100.0%12th Street between Flower St and Grand Ave 0.7 - 0.6 -

0 - - - -

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Traffic Volumes

TENS 1.15 Luxe P 4/27/2016



SpeedRoadway/Segment MPH AM PM ADT ROW 25 Feet 50 Feet ROW 25 Feet 50 Feet8th Street between Francisco St and Figueroa St 40 0 - - - - - -8th Street between Figueroa St and Flower St 40 0 - - - - - -Pico Boulevard between Figueroa St and Flower St 40 0 - - - - - -Pico Boulevard between Flower St and Grand Ave 40 0 - - - - - -

0 0 0 - - - - - -


0 0 0 - - - - - -


0 0 0 - - - - - -


Project Cumulative Project Cumulative Vehicle Type Day Eve Night Sub totalRoadway/Segment Increment Increment Increment Increment Auto 77.6% 9.7% 9.7% 97.0%8th Street between Francisco St and Figueroa St 0.0 - 0.0 - Medium Truck 1.6% 0.2% 0.2% 2.0%8th Street between Figueroa St and Flower St 0.0 - 0.0 - Heavy Truck 0.8% 0.1% 0.1% 1.0%Pico Boulevard between Figueroa St and Flower St 0.0 - 0.0 - 80.0% 10.0% 10.0% 100.0%Pico Boulevard between Flower St and Grand Ave 0.0 - 0.0 -

0 - - - -

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CNEL

CNEL

CNEL

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Existing


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Traffic Volumes

TENS 1.16 Luxe P 4/27/2016

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APPENDIX G – NOISE AND VIBRATION TECHNICAL REPORT · Theater, Microsoft Square, the JW Marriott...

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