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Home My WebLink About215 Riverside _Noise Study 215 Riverside Avenue NOISE IMPACT ANALYSIS CITY OF NEWPORT BEACH PREPARED BY: Bill Lawson, PE, INCE blawson@urbanxroads.com (949) 336-5979 Alex Wolfe, INCE awolfe@urbanxroads.com (949) 336-5977 MARCH 4, 2019 12356-03 Noise Study 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study ii 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study iii TABLE OF CONTENTS TABLE OF CONTENTS ........................................................................................................................... III APPENDICES ........................................................................................................................................ III LIST OF EXHIBITS ................................................................................................................................. IV LIST OF TABLES ................................................................................................................................... IV LIST OF ABBREVIATED TERMS ............................................................................................................. IV EXECUTIVE SUMMARY ......................................................................................................................... 1 1 INTRODUCTION ........................................................................................................................... 3 1.1 Site Location .................................................................................................................................. 3 1.2 Project Description ........................................................................................................................ 3 2 FUNDAMENTALS ......................................................................................................................... 7 2.1 Range of Noise .............................................................................................................................. 7 2.2 Noise Descriptors .......................................................................................................................... 8 2.3 Sound Propagation ........................................................................................................................ 8 2.4 Noise Control ................................................................................................................................ 9 2.5 Noise Barrier Attenuation ............................................................................................................. 9 2.6 Community Response to Noise ................................................................................................... 10 3 REGULATORY SETTING .............................................................................................................. 13 3.1 City of Newport Beach Municipal Code Noise Standards ........................................................... 13 4 EXISTING NOISE LEVEL MEASUREMENTS ................................................................................... 15 4.1 Measurement Procedure and Criteria ........................................................................................ 15 4.2 Noise Measurement Locations ................................................................................................... 15 4.3 Noise Measurement Results ....................................................................................................... 16 5 METHODS AND PROCEDURES.................................................................................................... 19 5.1 Reference Operational Noise Levels ........................................................................................... 19 5.2 CadnaA Noise Prediction Model ................................................................................................. 20 6 OPERATIONAL IMPACTS ............................................................................................................ 23 7 REFERENCES .............................................................................................................................. 25 8 CERTIFICATION .......................................................................................................................... 27 APPENDICES APPENDIX 3.1: CITY OF NEWPORT BEACH MUNICIPAL CODE APPENDIX 4.1: STUDY AREA PHOTOS APPENDIX 4.2: AMBIENT NOISE LEVEL MEASUREMENT WORKSHEETS APPENDIX 6.1: CADNAA NOISE MODEL DATA INPUTS & RESULTS 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study iv LIST OF EXHIBITS EXHIBIT 1-A: LOCATION MAP .............................................................................................................. 4 EXHIBIT 1-B: PROJECT SITE PLAN ......................................................................................................... 5 EXHIBIT 2-A: TYPICAL NOISE LEVELS .................................................................................................... 7 EXHIBIT 2-B: SOURCE-PATH-RECEIVER CONCEPT ............................................................................... 10 EXHIBIT 2-C: NOISE LEVEL INCREASE PERCEPTION ............................................................................. 11 EXHIBIT 4-A: NOISE MEASUREMENT LOCATIONS ............................................................................... 18 EXHIBIT 6-A: OPERATIONAL NOISE SOURCE LOCATIONS .................................................................... 24 LIST OF TABLES TABLE 3-1: EXTERIOR OPERATIONAL NOISE LEVEL STANDARDS ......................................................... 13 TABLE 4-1: 24-HOUR AMBIENT NOISE LEVEL MEASUREMENTS .......................................................... 17 TABLE 5-1: REFERENCE NOISE LEVEL MEASUREMENTS ...................................................................... 19 TABLE 6-1: OPERATIONAL NOISE LEVEL COMPLIANCE ....................................................................... 23 LIST OF ABBREVIATED TERMS (1) Reference ANSI American National Standards Institute CadnaA Computer Aided Noise Abatement CNEL Community Noise Equivalent Level dBA A-weighted decibels EPA Environmental Protection Agency FHWA Federal Highway Administration INCE Institute of Noise Control Engineering Leq Equivalent continuous (average) sound level Lmax Maximum level measured over the time interval Project 215 Riverside Avenue 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 1 EXECUTIVE SUMMARY Urban Crossroads, Inc. has prepared this noise study to evaluate the potential operational noise levels associated with the 215 Riverside Avenue (“Project”), and to identify the necessary exterior noise abatement measures, if any, to satisfy the City of Newport Beach Municipal Code exterior noise level standards. (1) The Project site is located at 215 Riverside Avenue in the City of Newport Beach, and consists of two-story commercial building with attached two-level parking structure. Using reference noise levels of similar operational activities, including roof-top air conditioning units and parking structure vehicle movements, this analysis estimates the Project- related operational (stationary-source) noise levels at the nearby noise-sensitive residential homes and adjacent commercial uses, consistent with the City of Newport Beach Municipal Code. The City of Newport Beach Municipal Code identifies base exterior noise level standards which do not account for the existing ambient noise level. If existing ambient noise levels in the Project study area are higher than the base exterior standards, the ambient noise levels become the adjusted exterior noise level standards per Section 10.26.025 (A) of the City of Newport Beach Municipal Code. As such, to present a conservative approach, this analysis relies on the more restrictive base exterior noise level standards of 55 dBA Leq daytime and 50 dBA Leq nighttime at residential uses per the City of Newport Beach Municipal Code; rather than adjusted exterior noise levels based on higher existing ambient noise levels measured in the Project study area which ranged from 54.8 to 63.2 dBA Leq during the daytime, and 47.2 to 59.6 dBA Leq during the nighttime hours, as shown in Table 4-1 of this report. Moreover, it is important to note that the Project operational noise levels described in this report assume a worst-case noise environment with the Project’s roof-top air conditioning units and parking structure vehicle movements operating continuously throughout the daytime and nighttime hours. However, the noise levels associated with the Project are anticipated to vary throughout the day under typical operating conditions. The results of this conservative analysis show that the Project-related operational noise levels associated with roof-top air conditioning units and parking structure vehicle movements will satisfy the City of Newport Beach Municipal Code daytime and nighttime exterior noise level standards at the nearby noise-sensitive residential homes and adjacent commercial uses. Therefore, no additional exterior noise abatement measures (e.g., noise barriers) are required. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 2 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 3 1 INTRODUCTION This noise analysis has been completed to evaluate the potential future operational noise levels associated with the 215 Riverside Avenue (“Project”), and to identify the necessary exterior noise abatement measures, if any, to satisfy the City of Newport Beach Municipal Code exterior noise level standards. (1) This noise study describes the Project, provides information regarding noise fundamentals, outlines the local regulatory setting, provides the study methods and procedures for operational noise analysis, and evaluates the operational noise levels from the Project. 1.1 SITE LOCATION The Project is located at 215 Riverside Avenue in the City of Newport Beach, as shown on Exhibit 1-A. Existing noise-sensitive uses in the Project study area include residential homes to the north and east. It is important to note that the residential homes to the north and east of the Project site are situated at a higher elevation than the 215 Riverside Avenue site. Commercial uses in the Project study area are located to the west and south of the Project site. 1.2 PROJECT DESCRIPTION The Project consists of two-story commercial building with attached two-level parking structure. Exhibit 1-B shows the Project site plan. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 4 EXHIBIT 1-A: LOCATION MAP 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 5 EXHIBIT 1-B: PROJECT SITE PLAN 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 6 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 7 2 FUNDAMENTALS Noise has been simply defined as "unwanted sound." Sound becomes unwanted when it interferes with normal activities, when it causes actual physical harm or when it has adverse effects on health. Noise is measured on a logarithmic scale of sound pressure level known as a decibel (dB). A-weighted decibels (dBA) approximate the subjective response of the human ear to broad frequency noise source by discriminating against very low and very high frequencies of the audible spectrum. They are adjusted to reflect only those frequencies which are audible to the human ear. Exhibit 2-A presents a summary of the typical noise levels and their subjective loudness and effects that are described in more detail below. EXHIBIT 2-A: TYPICAL NOISE LEVELS Source: Environmental Protection Agency Office of Noise Abatement and Control, Information on Levels of Environmental Noise Requisite to Protect Public Health and Welfare with an Adequate Margin of Safety (EPA/ONAC 550/9-74-004) March 1974. 2.1 RANGE OF NOISE Since the range of intensities that the human ear can detect is so large, the scale frequently used to measure intensity is a scale based on multiples of 10, the logarithmic scale. The scale for measuring intensity is the decibel scale. Each interval of 10 decibels indicates a sound energy ten times greater than before, which is perceived by the human ear as being roughly twice as loud. (2) The most common sounds vary between 40 dBA (very quiet) to 100 dBA (very loud). Normal conversation at three feet is roughly at 60 dBA, while loud jet engine noises equate to 110 dBA 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 8 at approximately 100 feet, which can cause serious discomfort. (3) Another important aspect of noise is the duration of the sound and the way it is described and distributed in time. 2.2 NOISE DESCRIPTORS Environmental noise descriptors are generally based on averages, rather than instantaneous, noise levels. The most commonly used figure is the equivalent level (Leq). Equivalent sound levels are not measured directly but are calculated from sound pressure levels typically measured in A- weighted decibels (dBA). The equivalent sound level (Leq) represents a steady state sound level containing the same total energy as a time varying signal over a given sample period and is commonly used to describe the “average” noise levels within the environment. While sound pressure levels (e.g. Leq) quantify in decibels the intensity of given sound sources at a reference distance, sound power levels (PWL) are connected to the sound source and are independent of distance. Sound pressure levels vary substantially with distance from the source, and also diminish as a result of intervening obstacles and barriers, air absorption, wind and other factors. Sound power is the acoustical energy emitted by the sound source and is an absolute value that is not affected by the environment. 2.3 SOUND PROPAGATION When sound propagates over a distance, it changes in level and frequency content. The manner in which noise reduces with distance depends on the following factors. 2.3.1 GEOMETRIC SPREADING Sound from a localized source (i.e., a stationary point source) propagates uniformly outward in a spherical pattern. The sound level attenuates (or decreases) at a rate of 6 dB for each doubling of distance from a point source. Highways consist of several localized noise sources on a defined path and hence can be treated as a line source, which approximates the effect of several point sources. Noise from a line source propagates outward in a cylindrical pattern, often referred to as cylindrical spreading. Sound levels attenuate at a rate of 3 dB for each doubling of distance from a line source. (4) 2.3.2 GROUND ABSORPTION The propagation path of noise from a highway to a receiver is usually very close to the ground. Noise attenuation from ground absorption and reflective wave canceling adds to the attenuation associated with geometric spreading. Traditionally, the excess attenuation has also been expressed in terms of attenuation per doubling of distance. This approximation is usually sufficiently accurate for distances of less than 200 ft. For acoustically hard sites (i.e., sites with a reflective surface between the source and the receiver, such as a parking lot or body of water), no excess ground attenuation is assumed. For acoustically absorptive or soft sites (i.e., those sites with an absorptive ground surface between the source and the receiver such as soft dirt, grass, or scattered bushes and trees), an excess ground attenuation value of 1.5 dB per doubling of distance is normally assumed. When added to the cylindrical spreading, the excess ground 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 9 attenuation results in an overall drop-off rate of 4.5 dB per doubling of distance from a line source. (5) 2.3.3 ATMOSPHERIC EFFECTS Receivers located downwind from a source can be exposed to increased noise levels relative to calm conditions, whereas locations upwind can have lowered noise levels. Sound levels can be increased at large distances (e.g., more than 500 feet) due to atmospheric temperature inversion (i.e., increasing temperature with elevation). Other factors such as air temperature, humidity, and turbulence can also have significant effects. (4) 2.3.4 SHIELDING A large object or barrier in the path between a noise source and a receiver can substantially attenuate noise levels at the receiver. The amount of attenuation provided by shielding depends on the size of the object and the frequency content of the noise source. Shielding by trees and other such vegetation typically only has an “out of sight, out of mind” effect. That is, the perception of noise impact tends to decrease when vegetation blocks the line-of-sight to nearby resident. However, for vegetation to provide a substantial, or even noticeable, noise reduction, the vegetation area must be at least 15 feet in height, 100 feet wide and dense enough to completely obstruct the line-of sight between the source and the receiver. This size of vegetation may provide up to 5 dBA of noise reduction. The FHWA does not consider the planting of vegetation to be a noise abatement measure. (5) 2.4 NOISE CONTROL Noise control is the process of obtaining an acceptable noise environment for an observation point or receiver by controlling the noise source, transmission path, receiver, or all three. This concept is known as the source-path-receiver concept. (6) In general, noise control measures can be applied to these three elements. Exhibit 2-B shows the source-path-receiver concept. 2.5 NOISE BARRIER ATTENUATION Effective noise barriers can reduce noise levels by 10 to 15 dBA, cutting the loudness of traffic noise in half. A noise barrier is most effective when placed close to the noise source or receiver. Noise barriers, however, do have limitations. For a noise barrier to work, it must be high enough and long enough to block the path of the noise source. (5) 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 10 EXHIBIT 2-B: SOURCE-PATH-RECEIVER CONCEPT Source: FTA, Transit Noise and Vibration Impact Assessment Manual, Figure 3-I. 2.6 COMMUNITY RESPONSE TO NOISE Community responses to noise may range from registering a complaint by telephone or letter, to initiating court action, depending upon everyone’s susceptibility to noise and personal attitudes about noise. Several factors are related to the level of community annoyance including: • Fear associated with noise producing activities; • Socio-economic status and educational level; • Perception that those affected are being unfairly treated; • Attitudes regarding the usefulness of the noise-producing activity; • Belief that the noise source can be controlled. Approximately ten percent of the population has a very low tolerance for noise and will object to any noise not of their making. Consequently, even in the quietest environment, some complaints will occur. Another twenty-five percent of the population will not complain even in very severe noise environments. Thus, a variety of reactions can be expected from people exposed to any given noise environment. (7) Surveys have shown that about ten percent of the people exposed to traffic noise of 60 dBA will report being highly annoyed with the noise, and each increase of one dBA is associated with approximately two percent more people being highly annoyed. When traffic noise exceeds 60 dBA or aircraft noise exceeds 55 dBA, people may begin to complain. (7) Despite this variability in behavior on an individual level, the population can be expected to exhibit the following responses to changes in noise levels as shown on Exhibit 2-C. An increase or decrease of 1 dBA cannot be perceived except in carefully controlled laboratory experiments, a change of 3 dBA are considered barely perceptible, and changes of 5 dBA are considered readily perceptible. (5) 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 11 EXHIBIT 2-C: NOISE LEVEL INCREASE PERCEPTION 0 1 2 3 4 5 6 7 8 9 10 Just Perceptible Barely Perceptible Readily Perceptible Twice as Loud Noise Level Increase (dBA) 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 12 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 13 3 REGULATORY SETTING To limit population exposure to physically and/or psychologically damaging as well as intrusive noise levels, the federal government, the State of California, various county governments, and most municipalities in the state have established standards and ordinances to control noise. In most areas, automobile and truck traffic is the major source of environmental noise. Traffic activity generally produces an average sound level that remains fairly constant with time. Air and rail traffic, and commercial and industrial activities are also major sources of noise in some areas. Federal, state, and local agencies regulate different aspects of environmental noise. Federal and state agencies generally set noise standards for mobile sources such as aircraft and motor vehicles, while regulation of stationary sources is left to local agencies. 3.1 CITY OF NEWPORT BEACH MUNICIPAL CODE NOISE STANDARDS The City of Newport Beach Municipal Code, Chapter10.26 Community Noise Control, establishes the permissible exterior noise levels that may intrude into a neighboring property. According to Section 10.26.025(A) exterior noise levels at single-family residential land uses (Noise Zone 1) shall not exceed 55 dBA Leq during the daytime hours (7:00 a.m. to 10:00 p.m.) and 50 dBA Leq during the nighttime hours (10:00 p.m. to 7:00 a.m.). (1) For commercial uses, exterior noise levels shall not exceed 65 dBA Leq during the daytime hours (7:00 a.m. to 10:00 p.m.) and 60 dBA Leq during the nighttime hours (10:00 p.m. to 7:00 a.m.). The City of Newport Beach Municipal Code, Chapter10.26 Community Noise Control exterior noise level standards are shown on Table 3-1 and are included in Appendix 3.1. TABLE 3-1: EXTERIOR OPERATIONAL NOISE LEVEL STANDARDS City Land Use Time Period Base Exterior Noise Level Standards (dBA Leq)2 Newport Beach1 Residential (Noise Zone I) Daytime 55 Nighttime 50 Commercial (Noise Zone II) Daytime 65 Nighttime 60 1 Source: City of Newport Beach Municipal Code, Section 10.26.025 (Appendix 3.1). 2 Base exterior noise level standards do not account for the existing ambient noise levels which, if higher than the base exterior standards, would become the adjusted exterior noise level standards per Section 10.26.025 (A) of the City of Newport Beach Municipal Code. As such, this analysis is based on the more conservative base exterior noise level standards. "Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 14 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 15 4 EXISTING NOISE LEVEL MEASUREMENTS To assess the existing noise level environment, 24-hour noise level measurements were taken at four locations in the Project study area. The receiver locations were selected to describe and document the existing noise environment within the Project study area. Exhibit 4-A provides the boundaries of the Project study area and the noise level measurement locations. To fully describe the existing noise conditions, noise level measurements were collected by Urban Crossroads, Inc. on Tuesday, February 26th, 2019. Appendix 4.1 includes study area photos. 4.1 MEASUREMENT PROCEDURE AND CRITERIA To describe the existing noise environment, the hourly noise levels were measured during typical weekday conditions over a 24-hour period. By collecting individual hourly noise level measurements, it is possible to describe the daytime and nighttime hourly noise levels and calculate the 24-hour CNEL. The long-term noise readings were recorded using Piccolo Type 2 integrating sound level meter and dataloggers. The Piccolo sound level meters were calibrated using a Larson-Davis calibrator, Model CAL 150. All noise meters were programmed in "slow" mode to record noise levels in "A" weighted form. The sound level meters and microphones were equipped with a windscreen during all measurements. All noise level measurement equipment satisfies the American National Standards Institute (ANSI) standard specifications for sound level meters ANSI S1.4-2014/IEC 61672-1:2013. (8) 4.2 NOISE MEASUREMENT LOCATIONS The long-term noise level measurements were positioned as close to the nearest sensitive receiver locations as possible to assess the existing ambient hourly noise levels surrounding the Project site. Both Caltrans and the FTA recognize that it is not reasonable to collect noise level measurements that can fully represent every part of a private yard, patio, deck, or balcony normally used for human activity when estimating impacts for new development projects. This is demonstrated in the Caltrans general site location guidelines which indicate that, sites must be free of noise contamination by sources other than sources of interest. Avoid sites located near sources such as barking dogs, lawnmowers, pool pumps, and air conditioners unless it is the express intent of the analyst to measure these sources. (4) Further, FTA guidance states, that it is not necessary nor recommended that existing noise exposure be determined by measuring at every noise-sensitive location in the project area. Rather, the recommended approach is to characterize the noise environment for clusters of sites based on measurements or estimates at representative locations in the community. (9) Based on recommendations of Caltrans and the FTA, it is not necessary to collect measurements at each individual building or residence, because each receiver measurement represents a group of buildings that share acoustical equivalence. (9) In other words, the area represented by the receiver shares similar shielding, terrain, and geometric relationship to the reference noise source. Receivers represent a location of noise sensitive areas and are used to estimate the future noise level impacts. Collecting reference ambient noise level measurements at the nearby 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 16 sensitive receiver locations allows for a comparison of the before and after Project noise levels and is necessary to assess potential noise impacts due to the Project’s contribution to the ambient noise levels. 4.3 NOISE MEASUREMENT RESULTS The noise measurements presented below focus on the average or equivalent sound levels (Leq). The equivalent sound level (Leq) represents a steady state sound level containing the same total energy as a time varying signal over a given sample period. Table 4-1 identifies the hourly daytime (7:00 a.m. to 10:00 p.m.) and nighttime (10:00 p.m. to 7:00 a.m.) noise levels at each noise level measurement location. Appendix 4.2 provides a summary of the existing hourly ambient noise levels described below: •Location L1 represents the noise levels northwest of the Project site on Cliff Drive in an existing park near residential homes. The energy (logarithmic) average daytime noise level was calculated at 55.7 dBA Leq with an average nighttime noise level of 50.0 dBA Leq. •Location L2 represents the noise levels within the existing parking lot at the Project site, south of existing residential homes. The energy (logarithmic) average daytime noise level was calculated at 54.8 dBA Leq with an average nighttime noise level of 47.2 dBA Leq. •Location L3 represents the noise levels on northeast of the Project site on Riverside Avenue adjacent to an existing park. The energy (logarithmic) average daytime noise level was calculated at 63.2 dBA Leq with an average nighttime noise level of 59.6 dBA Leq. •Location L4 represents the noise levels east of the Project site on Ocean View Avenue adjacent to existing residential homes. The energy (logarithmic) average daytime noise level was calculated at 56.2 dBA Leq with an average nighttime noise level of 48.7 dBA Leq. Table 4-1 provides the (energy average) noise levels used to describe the daytime and nighttime ambient conditions. These daytime and nighttime energy average noise levels represent the average of all hourly noise levels observed during these time periods expressed as a single number. Appendix 4.2 provides summary worksheets of the noise levels for each hour as well as the minimum, maximum, L1, L2, L5, L8, L25, L50, L90, L95, and L99 percentile noise levels observed during the daytime and nighttime periods. The background ambient noise levels in the Project study area are dominated by the transportation-related noise associated the arterial roadway network. This includes the auto and heavy truck activities on study area roadway segments near the noise level measurement locations. The 24-hour existing noise level measurement results are shown on Table 4-1. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 17 TABLE 4-1: 24-HOUR AMBIENT NOISE LEVEL MEASUREMENTS Location1 Description Energy Average Noise Level (dBA Leq)2 CNEL Daytime Nighttime L1 Located northwest of the Project site on Cliff Drive in an existing park near residential homes. 55.7 50.0 58.2 L2 Located within the existing parking lot at the Project site, south of existing residential homes. 54.8 47.2 56.3 L3 Located northeast of the Project site on Riverside Avenue adjacent to an existing park. 63.2 59.6 67.0 L4 Located east of the Project site on Ocean View Avenue adjacent to existing residential homes. 56.2 48.7 57.6 1 See Exhibit 4-A for the noise level measurement locations. 2 Energy (logarithmic) average levels. The long-term 24-hour measurement worksheets are included in Appendix 4.2. "Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 18 EXHIBIT 4-A: NOISE MEASUREMENT LOCATIONS 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 19 5 METHODS AND PROCEDURES The following section outlines the methods and procedures used to model and analyze the noise levels due to Project operational activities. 5.1 REFERENCE OPERATIONAL NOISE LEVELS To estimate the Project operational noise levels, reference noise level measurements were collected from similar types of activities to represent the noise levels expected with the development of the proposed Project. This section provides a description of the reference noise level measurements shown on Table 5-1 used to estimate the Project operational noise impacts. It is important to note that the following projected noise levels assume the worst-case noise environment with the roof-top air conditioning units and parking structure vehicle movements all operating continuously. These noise level impacts will likely vary throughout the day. TABLE 5-1: REFERENCE NOISE LEVEL MEASUREMENTS Noise Source Total Duration (hh:mm:ss) Ref. Distance (Feet) Source Height (Feet) Reference Noise Levels (dBA Leq) Sound Power Level (PWL)4 @ Ref. Distance @ 50 Feet3 Roof-Top Air Conditioning Units1 96:00:00 5' 4' 77.2 57.2 88.9 Parking Lot Vehicle Movements2 01:00:00 10' 5' 52.2 38.2 69.9 1 As measured by Urban Crossroads, Inc. on 7/27/2015 at the Santee Walmart located at 170 Town Center Parkway. 2 As measured by Urban Crossroads, Inc. on 5/17/2017 at the Panasonic Avionics Corporation in the City of Lake Forest. 3 Reference noise levels at 50 feet represent the normalized noise source levels for comparison at a common distance. 4 Calculated using the CadnaA noise model at the reference distance to the noise source. "Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 5.1.1 ROOF-TOP AIR CONDITIONING UNITS To assess the impacts created by the roof-top air conditioning units at the Project buildings, reference noise levels measurements were taken over a four-day total duration at the Santee Walmart on July 27th, 2015. Located at 170 Town Center Parkway in the City of Santee, the noise level measurements describe mechanical roof-top air conditioning units on the roof of an existing Walmart store, in addition to background noise levels from additional roof-top units. The reference noise level represents Lennox SCA120 series 10-ton model packaged air conditioning units. At 5 feet from the closest roof-top air conditioning unit, the highest exterior noise level from all four days of the measurement period was measured at 77.2 dBA Leq. Using the uniform reference distance of 50 feet, the noise level is 57.2 dBA Leq. The operating conditions of the reference noise level measurement reflect peak summer cooling requirements with measured temperatures approaching 96 degrees Fahrenheit (°F) with average daytime temperatures of 82°F. This reference noise level measurement is anticipated to conservatively overstate the roof- top air conditioning unit noise levels of the Project since it represents the cooling equipment of a larger, commercial-retail box store. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 20 5.1.2 PARKING STRUCTURE VEHICLE MOVEMENTS To determine the noise levels associated with parking structure vehicle movements, Urban Crossroads collected reference noise level measurements over a 24-hour period on May 17th, 2017 at the parking lot for the Panasonic Avionics Corporation in the City of Lake Forest. The peak hour of activity measured over the 24-hour noise level measurement period occurred between 12:00 p.m. to 1:00 p.m., or the typical lunch hour for employees working in the area. The measured reference noise level at 50 feet from the parking activity was measured at 38.2 dBA Leq. The parking activity noise levels are mainly due to cars pulling in and out of spaces during peak lunch hour activity and employees talking. This reference noise level measurement is anticipated to conservatively overstate the parking structure noise levels of the Project since it represents the parking activity associated with that of a larger, commercial office use with a greater number of parking spaces. 5.2 CADNAA NOISE PREDICTION MODEL To fully describe the exterior operational noise levels from the 215 Riverside Avenue, Urban Crossroads, Inc. developed a noise prediction model using the CadnaA (Computer Aided Noise Abatement) computer program. CadnaA can analyze the noise level of multiple types of noise sources and calculates the noise levels at any location using the spatially accurate Project site plan and includes the effects of topography, buildings, and multiple barriers in its calculations using the latest standards to predict outdoor noise impacts. Using the spatially accurate Project site plan and flown aerial imagery from Nearmap, a CadnaA noise prediction model of the Project study area was developed. The noise model provides a three-dimensional representation of the Project study area using the following key data inputs: • Ground absorption; • Reflections at buildings and barriers; • Reference noise level sources by type (area, point, etc.) and noise source height; • Multiple noise receiver locations and heights; • Barrier and building heights. Based on these data inputs, the CadnaA noise prediction model will calculate the distance from each noise source to the noise receiver locations, using the ground absorption, distance, and barrier/building attenuation inputs to provide a summary of noise level calculations at each receiver location and the partial noise level contributions by noise source. The reference sound power level (PWL) for the highest noise source expected at the Project site was input into the CadnaA noise prediction model. While sound pressure levels (e.g. Leq) quantify in decibels the intensity of given sound sources at a reference distance, sound power levels (PWL) are connected to the sound source and are independent of distance. Sound pressure levels vary substantially with distance from the source, and also diminish as a result of intervening obstacles and barriers, air absorption, wind, and other factors. Sound power is the acoustical energy emitted by the sound source and is an absolute value that is not affected by the environment. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 21 The sound power level used in this analysis has been calibrated in the noise prediction model to accurately describe the reference dBA Leq noise levels. Based on the technical guidance provided for CadnaA, (10) the reference noise source is created in a separate CadnaA noise model with a receiver at the reference distance of the noise level measurement. The PWL of the noise source is then adjusted in the separate CadnaA noise model until the noise level at the given reference distance equals the measured reference noise level. The operational noise level calculations provided in this noise study account for the distance attenuation provided due to geometric spreading, when sound from a localized stationary source (i.e., a point source) propagates uniformly outward in a spherical pattern. Soft site conditions are used in the operational noise analysis which result in noise levels that attenuate (or decrease) at a rate of 7.5 dBA for each doubling of distance from a point source, given the soft ground and vegetation between the Project site and adjacent sensitive receiver locations. Appendix 6.1 includes the CadnaA noise model inputs and calculation data. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 22 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 23 6 OPERATIONAL IMPACTS This section analyzes the potential operational noise levels due to the Project’s stationary noise sources at the adjacent residential and commercial receiver locations. Exhibit 6-A shows the noise source and receiver locations used to assess the Project-related operational noise levels generated by roof-top air conditioning units and parking structure vehicle movements. Based on the reference noise level measurements, previously described in Section 5.1, the Project operational stationary-source noise levels are estimated at each of the nearby receiver locations. All operational noise level calculations include the noise barrier attenuation provided by the planned parapet walls, Project building, existing buildings, and topography in the Project study area, as shown on Exhibit 6-A. Table 6-1 shows the Project-only noise levels at receiver locations R1 to R7 range from 26.7 to 48.2 dBA Leq based on the reference noise levels used in the analysis. At receiver locations R1 to R5, which represent noise-sensitive residential uses, the Project operational noise levels range from 26.7 to 48.2 dBA Leq, and are shown to satisfy the City of Newport Beach Municipal Code daytime 55 dBA Leq and nighttime 50 dBA Leq exterior noise level standards for residential uses. At receiver locations R6 and R7, which represent existing commercial uses, the Project operational noise levels range from 37.4 to 37.9 dBA Leq, and are shown to satisfy the City of Newport Beach Municipal Code daytime 65 dBA Leq and nighttime 60 dBA Leq exterior noise level standards for commercial uses. Therefore, the results of the analysis show that the Project- related operational noise levels associated with roof-top air conditioning units and parking structure vehicle movements will satisfy the City of Newport Beach Municipal Code daytime and nighttime base exterior noise level standards at the nearby noise-sensitive residential homes and adjacent commercial uses. As such, no additional exterior noise abatement measures (e.g., noise barriers) are required. TABLE 6-1: OPERATIONAL NOISE LEVEL COMPLIANCE Receiver Location1 Land Use Unmitigated Project Operational Noise Levels (dBA Leq)2 Threshold (dBA Leq)3 Threshold Exceeded? Daytime Nighttime Daytime Nighttime R1 Residential 28.4 55 50 No No R2 Residential 26.7 55 50 No No R3 Residential 45.5 55 50 No No R4 Residential 48.2 55 50 No No R5 Residential 40.8 55 50 No No R6 Commercial 37.9 65 60 No No R7 Commercial 37.4 65 60 No No 1 See Exhibit 6-A for the receiver and noise source locations. 2 CadnaA noise prediction model results are provided in Appendix 6.1. 3 Exterior noise level standards (Table 3-1). "Daytime" = 7:00 a.m. to 10:00 p.m.; "Nighttime" = 10:00 p.m. to 7:00 a.m. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 24 EXHIBIT 6-A: OPERATIONAL NOISE SOURCE LOCATIONS 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 25 7 REFERENCES 1. City of Newport Beach. Municipal Code, Chapter 10.26 Community Noise Control. 2. California Department of Transportation Environmental Program. Technical Noise Supplement - A Technical Supplement to the Traffic Noise Analysis Protocol. Sacramento, CA : s.n., September 2013. 3. Environmental Protection Agency Office of Noise Abatement and Control. Information on Levels of Environmental Noise Requisite to Protect Public Health and Welfare with an Adequate Margin of Safety. March 1974. EPA/ONAC 550/9/74-004. 4. California Department of Transportation Environmental Program. Technical Noise Supplement - A Technical Supplement to the Traffic Noise Analysis Protocol. Sacramento, CA : s.n., September 2013. 5. U.S. Department of Transportation, Federal Highway Administration, Office of Environment and Planning, Noise and Air Quality Branch. Highway Traffic Noise Analysis and Abatement Policy and Guidance. June, 1995. 6. U.S. Department of Transportation Federal Transit Administration. Transit Noise and Vibration Impact Assessment Manual. September 2018. 7. U.S. Environmental Protection Agency Office of Noise Abatement and Control. Noise Effects Handbook-A Desk Reference to Health and Welfare Effects of Noise. October 1979 (revised July 1981). EPA 550/9/82/106. 8. American National Standards Institute (ANSI). Specification for Sound Level Meters ANSI S1.4-2014/IEC 61672-1:2013. 9. U.S. Department of Transportation, Federal Transit Administration. Transit Noise and Vibration Impact Assessment. September 2018. 10. DataKustik. Technical Note: Calibrating Point Sources TN0301e. 2009. 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 26 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 27 8 CERTIFICATION The contents of this noise study report represent an accurate depiction of the noise environment and impacts associated with the 215 Riverside Avenue Project. The information contained in this noise study report is based on the best available data at the time of preparation. If you have any questions, please contact me directly at (949) 336-5979. Bill Lawson, P.E., INCE Principal URBAN CROSSROADS, INC. 260 East Baker Street, Suite 200 Costa Mesa, CA 92626 (949) 336-5979 blawson@urbanxroads.com EDUCATION Master of Science in Civil and Environmental Engineering California Polytechnic State University, San Luis Obispo • December, 1993 Bachelor of Science in City and Regional Planning California Polytechnic State University, San Luis Obispo • June, 1992 PROFESSIONAL REGISTRATIONS PE – Registered Professional Traffic Engineer – TR 2537 • January, 2009 AICP – American Institute of Certified Planners – 013011 • June, 1997–January 1, 2012 PTP – Professional Transportation Planner • May, 2007 – May, 2013 INCE – Institute of Noise Control Engineering • March, 2004 PROFESSIONAL AFFILIATIONS ASA – Acoustical Society of America ITE – Institute of Transportation Engineers PROFESSIONAL CERTIFICATIONS Certified Acoustical Consultant – County of Orange • February, 2011 FHWA-NHI-142051 Highway Traffic Noise Certificate of Training • February, 2013 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study 28 This page intentionally left blank 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study APPENDIX 3.1: CITY OF NEWPORT BEACH MUNICIPAL CODE 29 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 30 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/1/9 (119 hits) Chapter 10.26 COMMUNITY NOISE CONTROL Sections: 10.26.005 Declaration of Policy. 10.26.010 Definitions. 10.26.015 Decibel Measurement Criteria. 10.26.020 Designated Noise Zones. 10.26.025 Exterior Noise Standards. 10.26.030 Interior Noise Standards. 10.26.035 Exemptions. 10.26.040 Schools, Day Care Centers, Churches, Libraries, Museums, Health Care Institutions—Special Provisions. 10.26.045 Heating, Venting and Air Conditioning—Special Provisions. 10.26.050 Sound-Amplifying Equipment. 10.26.055 Noise Level Measurement. 10.26.065 Proposed Developments. 10.26.070 Prima Facie Violation. 10.26.075 Violations. 10.26.080 Violations—Additional Remedies—Injunctions. 10.26.085 City Manager Waiver. 10.26.090 Noise Abatement Programs. 10.26.095 Manner of Enforcement. 10.26.100 Severability. 10.26.005 Declaration of Policy. A. In order to control unnecessary, excessive and annoying noise in the City of Newport Beach, it is declared to be the policy of the City to prohibit such noise generated from or by all sources as specified in this chapter. B. It is determined that certain noise levels are detrimental to the public health, welfare and safety and contrary to public interest, therefore, the City Council of the City of Newport Beach does ordain and declare that creating, maintaining, causing or allowing to be created, caused or maintained, any noise in a manner prohibited by, or not in conformity with, the provisions of this chapter, is a public nuisance and may be punished as a public nuisance. The ordinance codified in this chapter is effective thirty (30) days from adoption, however, all fixed noise sources existing at the date of adoption shall have ninety (90) days from the date of adoption to achieve compliance with this chapter. (Ord. 95-38 § 11 (part), 1995) 10.26.010 Definitions. The following words, phrases and terms as used in this chapter shall have the meanings as indicated here: “Agricultural property” means a parcel of real property which is undeveloped for any use other than agricultural purposes. “Ambient noise level” means the all-encompassing noise level associated with a given environment, being a composite of sounds from all sources, excluding the alleged offensive noise, at the location and approximate time at which a comparison with the alleged offensive noise is to be made. 31 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/2/9 “A-weighted sound level” means the total sound level meter with a reference pressure of twenty (20) micropascals using the A-weighted network (scale) at slow response. The unit of measurement shall be defined as DBA. “Code Enforcement Officer” means the Code Enforcement Officer of the City or his duly authorized deputy. “Commercial property” means a parcel of real property which is used as either in part or in whole for commercial purposes. “Cumulative period” means an additive period of time composed of individual time segments which may be continuous or interrupted. “Decibel (Db)” means a unit which denotes the ratio between two quantities which are proportional to power: the number of decibels corresponding to the ratio of two amounts of power is ten times the logarithm to the base ten of this ratio. “Dwelling unit” means any area within a structure on any parcel which: 1. Contains separate or independent living facilities for one or more persons, with an area or equipment for sleeping, sanitation and food preparation, and which has independent exterior access to ground level; or 2. Is being utilized for residential purposes by one or more persons separately or independently from occupants of other areas within the structure. “Emergency machinery, vehicle, work or alarm” means any machinery, vehicle, work or alarm used, employed, performed or operated in an effort to protect, provide or restore safety conditions in the community or for the citizenry, or work by private or public utilities when restoring utility service. “Equivalent, noise, level, leq.” means the sound level corresponding to a steady state noise level over a given measurement period with the same amount of acoustic energy as the actual time varying noise level. Also known as the energy average noise level during the measurement period. The measurement period shall be fifteen (15) minutes under the terms of this chapter. “Fixed noise source” means a stationary device which creates sounds while fixed or motionless including but not limited to residential, agricultural, industrial and commercial machinery and equipment, pumps, fans, compressors, air conditioners and refrigeration equipment. “Grading” means any excavating of filling of earth material or any combination thereof conducted at a site to prepare said site for construction or other improvements thereon. “Health care institution” means any hospital, convalescent home or other similar facility excluding residential. “Hertz (HZ)” means the unit which describes the frequency of a function periodic in time which is the reciprocal of the period. “Impulsive noise” means a noise of short duration usually less than one second and of high intensity, with an abrupt onset and rapid decay. “Industrial property” means a parcel of real property which is used either in part or in whole for manufacturing purposes. “Intruding noise level” means the total sound level, in decibels, created, caused, maintained or originating from an alleged offensive source at a specified location while the alleged offensive source is in operation. “Licensed” means the issuance of a formal license or permit by the appropriate jurisdictional authority, or where no permits or licenses are issued, the sanctioning of the activity by the jurisdiction as noted in public record.32 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/3/9 “Major roadway” means any street, avenue, boulevard or highway used for motor vehicle traffic which is owned or controlled by a public government entity. “Mobile noise source” means any noise source other than a fixed noise source. “Person” means any individual, firm, partnership, association, corporation, company or organization of any kind, including public agencies. “Residential property” means a parcel of real property which is used either in part or in whole for residential purposes, other than transient uses such as hotels and motels, and residential care facilities. Residential property includes the residential portion of mixed use properties. “Simple tone noise” means a noise characterized by a predominant frequency or frequencies so that other frequencies cannot be readily distinguished. If measured, simple tone noise shall exist if the one-third octave band sound pressure levels in the band with the tone exceeds the arithmetic average of the sound pressure levels of the two continuous one-third octave bands as follows: five Db for frequencies of five hundred (500) Hertz (Hz) and above or, by fifteen (15) Db for frequencies less than or equal to one hundred twenty-three (123) Hz. “Sound level meter” means an instrument meeting American National Standard Institute’s Standard S1.4-1971 or most recent revision thereof for Type 2 sound level meters or an instrument and the associated recording and analyzing equipment which will provide equivalent data. “Sound pressure level” of a sound, in decibels, means twenty (20) times the logarithm to the base ten of the ratio of the pressure of the sound to a reference pressure which shall be explicitly stated. “Vibration” means any movement of the earth, ground or other similar surface created by a temporal and spatial oscillation device or equipment located upon, affixed in conjunction with that surface. (Ord. 95-38 § 11 (part), 1995) 10.26.015 Decibel Measurement Criteria. Any decibel measurement made pursuant to the provisions of this chapter shall be based on a reference sound pressure of twenty (20) micropascals as measured with a sound level meter using the A-weighted network (scale) at slow response. (Ord. 95-38 § 11 (part), 1995) 10.26.020 Designated Noise Zones. The properties hereinafter described assigned to the following noise zones: Noise Zone I — All single-, two- and multiple-family residential properties; Noise Zone II — All commercial properties; Noise Zone III — The residential portion of mixed-use properties; Noise Zone IV — All manufacturing or industrial properties. The actual use of the property shall be the determining factor in establishing whether a property is in Noise Zone I, II, III or IV provided that the actual use is a legal use in the City of Newport Beach. (Ord. 95-38 § 11 (part), 1995) 10.26.025 Exterior Noise Standards. 33 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/4/9 A. The following noise standards, unless otherwise specifically indicated, shall apply to all property with a designated noise zone: NOISE ZONE TYPE OF LAND USE ALLOWABLE EXTERIOR NOISE LEVEL (Equivalent Noise Level, Leq) 7 a.m. to 10 p.m.10 p.m. to 7 a.m. I Single-, two-or multiple-family residential 55 DBA 50 DBA II Commercial 65 DBA 60 DBA III Residential portions of mixed-use properties 60 DBA 50 DBA IV Industrial or manufacturing 70 DBA 70 DBA If the ambient noise level exceeds the resulting standard, the ambient shall be the standard. B. It is unlawful for any person at any location within the incorporated area of the City to create any noise, or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such person, which causes the noise level when measured on any other property, to exceed either of the following: 1. The noise standard for the applicable zone for any fifteen-minute period; 2. A maximum instantaneous noise level equal to the value of the noise standard plus twenty (20) DBA for any period of time (measured using A-weighted slow response). C. In the event the ambient noise level exceeds the noise standard, the maximum allowable noise level under said category shall be increased to reflect the maximum ambient noise level. D. The Noise Zone III standard shall apply to that portion of residential property falling within one hundred (100) feet of a commercial property, if the intruding noise originates from that commercial property. E. If the measurement location is on boundary between two different noise zones, the lower noise level standard applicable to the noise zone shall apply. (Ord. 95-53 § 1, 1995; Ord. 95-38 § 11 (part), 1995) 10.26.030 Interior Noise Standards. A. The following noise standard, unless otherwise specifically indicated, shall apply to all residential property within all noise zones: NOISE ZONE TYPE OF LAND USE ALLOWABLE INTERIOR NOISE LEVEL (Equivalent Noise Level, Leq) 7 a.m. to 10 p.m.10 p.m. to 7 a.m. I Residential 45 DBA 40 DBA 34 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/5/9 III Residential portions of mixed-use properties 45 DBA 40 DBA If the ambient noise level exceeds the resulting standard, the ambient shall be the standard. B. It shall be unlawful for any person at any location within the incorporated area of the City to create any noise or to allow the creation of any noise on property owned, leased, occupied or otherwise controlled by such a person which causes the noise level when measured on any other property, to exceed either of the following: 1. The noise standard for the applicable zone for any fifteen-minute period; 2. A maximum instantaneous noise level equal to the value of the noise standard plus twenty (20) DBA for any period of time (measured using A-weighted slow response). C. In the event the ambient noise level exceeds the noise standard, the noise standard applicable to said category shall be increased to reflect the maximum ambient noise level. D. The Noise Zone III standard shall apply to that portion of residential property falling within one hundred (100) feet of a commercial property, if the intruding noise originates from that commercial property. E. If the measurement location is on a boundary between two different noise zones, the lower noise level standard applicable to the noise zone shall apply. (Ord. 95-53 § 2, 1995; Ord. 95-38 § 11 (part), 1995) 10.26.035 Exemptions. The following activities shall be exempted from the provisions of this chapter: A. Any activity conducted on public property, or on private properly with the consent of the owner, by any public entity, or its officers, employees, representatives, agents, subcontractors, permittees, licensees, or lessees, which are consistent with, and in furtherance of, the governmental functions or services the public entity has authorized, or responsible, to perform, activities which are exempt from the provisions of this chapter include, without limitation, sporting and recreational activities which are sponsored or co-sponsored by the City of Newport Beach or the Newport Mesa Unified School District; B. Occasional outdoor gatherings, public dances, show, sporting and entertainment events, provided said events are conducted pursuant to a permit or license issued by the appropriate jurisdiction relative to the staging of said events; C. Any mechanical device, apparatus or equipment used, related to or connected with emergency machinery, vehicle, work or warning alarm or bell, provided the sounding of any bell or alarm on any building or motor vehicle shall terminate its operation within forty-five (45) minutes in any hour of its being activated; D. Noise sources associated with construction, repair, remodeling, demolition or grading of any real property. Such activities shall instead be subject to the provisions of Chapter 10.28 of this title; E. Noise sources associated with construction, repair, remodeling, demolition or grading of public rights-of-way or during authorized seismic surveys; F. All mechanical devices, apparatus or equipment associated with agriculture operations provided that: 1. Operations do not take place between eight p.m. and seven a.m. on weekdays, including Saturday, or at any time Sunday or a federal holiday, or 35 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/6/9 2. Such operations and equipment are utilized for the protection or salvage of agricultural crops during periods of potential or actual frost damage or other adverse weather conditions, or 3. Such operations and equipment are associated with agricultural pest control through pesticide application, provided the application is made in accordance with permits issued by or regulations enforced by the California Department of Agriculture; G. Noise sources associated with the maintenance of real property. Such activities shall instead be subject to the provisions of Chapter 10.28 of this title; H. Any activity to the extent regulation thereof has been preempted by state or federal law. NOTE: Preemption may include motor vehicle, aircraft in flight, and railroad noise regulations; I. Any noise sources associated with people and/or music associated with a party at a residential property. Such noise is difficult to measure under the terms of this chapter and instead shall be subject to the provisions of Chapters 10.28 and 10.58 of this title; J. Any noise sources associated with barking dogs or other intermittent noises made by animals on any properly within the City of Newport Beach. Such noise is difficult to measure under the terms of this chapter and instead shall be subject to the provisions of Chapter 7.20 of this Code; K. Any noise sources associated with the operation of a permanently installed heating, venting and air conditioning (HVAC) equipment on a residential property permitted under the provisions of Section 10.26.045(B) and (C); L. Any noise sources specifically identified and mitigated under the provisions of a use permit, modification permit, development agreement or planned community district development plan adopted prior to the date of adoption of this chapter. (Ord. 95-53 § 3, 1995; Ord. 95-38 § 11 (part), 1995) 10.26.040 Schools, Day Care Centers, Churches, Libraries, Museums, Health Care Institutions —Special Provisions. It is unlawful for any person to create any noise which causes the noise level at any school, day care center, hospital or similar health care institution, church, library or museum while the same is in use, to exceed the noise standards specified in Section 10.26.025 prescribed for the assigned Noise Zone I (residential uses). (Ord. 95-38 § 11 (part), 1995) 10.26.045 Heating, Venting and Air Conditioning—Special Provisions. A. New HVAC Equipment. New permits for heating, venting and air conditioning (HVAC) equipment in or adjacent to residential areas shall be issued only where installations can be shown by computation, based on the sound rating of the proposed equipment, not to exceed an A-weighted sound pressure level of fifty (50) DBA or not to exceed an A-weighted sound pressure level of fifty-five (55) dBA and be installed with a timing device that will deactivate the equipment during the hours of ten p.m. to seven a.m. The method of computation used shall be that specified in “Standard Application of Sound Rated Outdoor Unitary Equipment,” Standard 275, Air conditioning and Refrigeration Institute, 1984 or latest revision thereof. B. Existing HVAC Equipment. 1. HVAC equipment legally installed prior to April 22, 1981, shall be permitted to operate with an exterior noise limit of sixty-five (65) dBA until January 1, 1998. 2. HVAC equipment legally installed prior to April 22, 1981, shall be exempted from the interior noise level standard as specified in Section 10.26.030 of this chapter until January 1, 1998.36 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/7/9 3. HVAC equipment legally installed after April 22, 1981, and prior to the date of adoption of this chapter shall not exceed a maximum exterior noise limit of fifty-five (55) dBA during the ninety-day compliance period set forth in Section 10.26.005. C. In the event that HVAC equipment cannot meet the requirements set forth in this chapter, then the exterior noise limit for such equipment may be raised to sixty-five (65) dBA and exempted from the interior noise level standard as specified in Section 10.26.030 of this chapter, provided that the applicant obtains the written consent of all the owners of the affected properties. (Ord. 95-38 § 11 (part), 1995) 10.26.050 Sound-Amplifying Equipment. Loudspeakers, sound amplifiers, public address systems or similar devices used to amplify sounds shall be subject to the provisions of Chapter 10.32 of this title. Such sound-amplifying equipment shall not be construed to include electronic devices, including but not limited to, radios, tape players, tape recorders, compact disc players, electric keyboards, music synthesizers, record players or televisions, which are designed and operated for personal use, or used entirely within a building and are not designed or used to convey the human voice, music or any other sound to an audience outside such building, or which are used in vehicles and heard only by occupants of the vehicle in which installed, which shall be subject to the provisions of Chapter 10.28 of this title. (Ord. 95-38 § 11 (part), 1995) 10.26.055 Noise Level Measurement. A. The location selected for measuring exterior noise levels in a residential area shall be at any part of a private yard, patio, deck or balcony normally used for human activity and identified by the owner of the affected property as suspected of exceeding the noise level standard. This location may be the closest point in the private yard or patio, or on the deck or balcony, to the noise source, but should not be located in nonhuman activity areas such as trash container storage areas, planter beds, above or contacting a property line fence, or other areas not normally used as part of the yard, patio, deck or balcony. The location selected for measuring exterior noise levels in a nonresidential area shall be at the closest point to the noise source. The measurement microphone height shall be five feet above finish elevation or, in the case of a deck or balcony, the measurement microphone height shall be five feet above the finished floor level. B. The location selected for measuring interior noise levels shall be made within the affected residential unit. The measurements shall be made at a point at least four feet from the wall, ceiling or floor, or within the frame of a window opening, nearest the noise source. The measurements shall be made with windows in an open position. (Ord. 95-38 § 11 (part), 1995) 10.26.065 Proposed Developments. Each department whose duty it is to review and approve new projects or changes to existing projects that result or may result in the creation of noise shall consult with the Code Enforcement Officer prior to any such approval. If at any time the Code Enforcement Officer has reason to believe that a standard, regulation, action, proposed standard, regulation or action of any department respecting noise does not conform to the provisions as specified in this chapter, the Code Enforcement Officer may request such department to consult with him on the advisability of revising such standard or regulation to obtain uniformity. (Ord. 95-38 § 11 (part), 1995) 10.26.070 Prima Facie Violation. Any noise exceeding the noise level standard as specified in Section 10.26.025 and 10.26.030 of this chapter, shall be deemed to be prima facie evidence of a violation of the provisions of this chapter. (Ord. 95-38 § 11 (part), 1995) 10.26.075 Violations. 37 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/8/9 Any persons violating any of the provisions of this chapter shall be deemed guilty of an infraction. (Ord. 95-38 § 11 (part), 1995) 10.26.080 Violations—Additional Remedies—Injunctions. A. As an additional remedy, the operation or maintenance of any device, instrument, vehicle or machinery in violation of any provisions of this chapter which operation or maintenance causes or creates sound levels exceeding the allowable standards as specified in this chapter shall be deemed and is declared to be a public nuisance and may be subject to abatement summarily by a restraining order or injunction issued by a court of competent jurisdiction. B. Any violation of this chapter is declared to be a public nuisance and may be abated in accordance with law. The expense of this chapter is declared to be public nuisance and may be by resolution of the City Council declared to be a lien against the property on which such nuisance is maintained, and such lien shall be made a personal obligation of the property owner. (Ord. 95-38 § 11 (part), 1995) 10.26.085 City Manager Waiver. The City Manager is authorized to grant a temporary waiver to the provisions of this chapter for a period of time not to exceed thirty (30) days if such temporary waiver would be in the public interest and there is no feasible and prudent alternative to the activity, or the method of conducting the activity, for which the temporary waiver is sought. (Ord. 95-38 § 11 (part), 1995) 10.26.090 Noise Abatement Programs. A. In circumstances which adopted community-wide noise standards and policies prove impractical in controlling noise generated from a specific source, the City Council may establish a noise abatement program which recognizes the characteristics of the noise source and affected property and which incorporates specialized mitigation measures. B. Noise abatement programs shall set forth in detail the approved terms, conditions and requirements for achieving maximum compliance with noise standards and policies. Said terms, conditions and requirements may include, but shall not be limited to, limitations, restrictions, or prohibitions on operating hours, location of operations, and the types of equipment. (Ord. 95-38 § 11 (part), 1995) 10.26.095 Manner of Enforcement. A. The City Code Enforcement Officer is directed to enforce the provisions of this chapter and may issue citations for any violation of the provisions of this chapter or violations of this chapter may be prosecuted or enforced in the same manner as other infractions pursuant to this Code; provided, however, that in the event of an initial violation of the provisions of this chapter, a written notice may be given to the alleged violator which specifies the time by which the condition shall be corrected. B. No person shall interfere with, oppose or resist any authorized person charged with the enforcement of this chapter while such person is engaged in the performance of his/her duty. C. In the event the alleged violator cannot be located in order to serve any notice, the notice shall be deemed to be given upon mailing such notice by registered or certified mail to the alleged violator at his last known address or at the place where the violation occurred in which event the specified time period for abating the violation or applying for a variance shall commence at the date of the day following the mailing of such notice. (Ord. 95-38 § 11 (part), 1995) 10.26.100 Severability. 38 2/14/2019 Chapter 10.26 COMMUNITY NOISE CONTROL https://www.codepublishing.com/CA/NewportBeach/9/9 If any provision, clause, sentence, or paragraph of this chapter, or the application thereof to any person or circumstance shall be held invalid, such invalidity shall not affect the other provisions of this chapter which can be given effect without the invalid provisions or application and, to this end, the provisions of this chapter are hereby declared to be severable. (Ord. 95-38 § 11 (part), 1995) The Newport Beach Municipal Code is current through Ordinance 2018-19, and legislation passed through December 11, 2018. Disclaimer: The City Clerk's Office has the official version of the Newport Beach Municipal Code. Users should contact the City Clerk's Office for ordinances passed subsequent to the ordinance cited above. 39 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 40 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study APPENDIX 4.1: STUDY AREA PHOTOS 41 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 42 JN:12356 Study Area Photos L1 East 33, 37' 20.920000", 117, 55' 27.920000" L1 North 33, 37' 20.950000", 117, 55' 27.980000" L1 South 33, 37' 20.920000", 117, 55' 27.900000" L1 West 33, 37' 21.000000", 117, 55' 27.980000" L2 North 33, 37' 19.590000", 117, 55' 25.420000" L2 Northeast 33, 37' 19.590000", 117, 55' 25.450000" 43 JN:12356 Study Area Photos L2 South 33, 37' 19.590000", 117, 55' 25.480000" L2 West 33, 37' 19.620000", 117, 55' 25.480000" L3 North 33, 37' 21.060000", 117, 55' 22.680000" L3 Southeast 33, 37' 21.070000", 117, 55' 22.680000" L3 Southwest 33, 37' 21.090000", 117, 55' 22.600000" L3 West 33, 37' 21.050000", 117, 55' 22.540000" 44 JN:12356 Study Area Photos L4 Northeast 33, 37' 18.350000", 117, 55' 21.470000" L4 South 33, 37' 18.340000", 117, 55' 21.500000" L4 West 33, 37' 17.850000", 117, 55' 21.720000" 45 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 46 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study APPENDIX 4.2: AMBIENT NOISE LEVEL MEASUREMENT WORKSHEETS 47 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 48 Date:Location:Meter:Piccolo I JN:12356 Project:215 Riverside Analyst:R. Saber Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99%L eq Adj.Adj. L eq 0 48.3 58.4 43.3 53.0 52.0 50.0 50.0 48.0 47.0 45.0 45.0 44.0 48.3 10.0 58.3 1 46.3 59.1 42.2 51.0 51.0 49.0 49.0 46.0 45.0 43.0 43.0 42.0 46.3 10.0 56.3 2 44.8 53.1 42.3 49.0 48.0 47.0 47.0 45.0 44.0 43.0 42.0 42.0 44.8 10.0 54.8 3 44.5 53.9 41.1 49.0 49.0 47.0 46.0 44.0 43.0 42.0 42.0 42.0 44.5 10.0 54.5 4 53.3 78.8 42.4 66.0 56.0 49.0 48.0 46.0 45.0 43.0 43.0 43.0 53.3 10.0 63.3 5 49.5 58.9 44.0 53.0 53.0 52.0 51.0 50.0 49.0 46.0 45.0 44.0 49.5 10.0 59.5 6 53.8 73.2 48.3 58.0 57.0 56.0 55.0 54.0 53.0 50.0 50.0 49.0 53.8 10.0 63.8 7 56.8 76.5 50.3 62.0 61.0 60.0 60.0 57.0 55.0 53.0 52.0 51.0 56.8 0.0 56.8 8 55.7 68.7 48.3 62.0 60.0 59.0 59.0 56.0 54.0 51.0 50.0 49.0 55.7 0.0 55.7 9 55.7 66.5 48.4 62.0 61.0 59.0 58.0 56.0 54.0 51.0 51.0 49.0 55.7 0.0 55.7 10 57.0 68.3 48.6 63.0 62.0 60.0 60.0 58.0 55.0 52.0 51.0 50.0 57.0 0.0 57.0 11 57.0 73.9 49.1 66.0 63.0 60.0 59.0 57.0 54.0 52.0 51.0 50.0 57.0 0.0 57.0 12 57.2 85.2 49.3 63.0 61.0 58.0 57.0 55.0 53.0 51.0 51.0 50.0 57.2 0.0 57.2 13 57.1 73.6 49.6 66.0 63.0 60.0 59.0 57.0 54.0 51.0 51.0 50.0 57.1 0.0 57.1 14 54.9 68.0 48.5 61.0 59.0 58.0 57.0 55.0 53.0 51.0 50.0 49.0 54.9 0.0 54.9 15 55.0 67.4 49.5 61.0 60.0 58.0 57.0 55.0 54.0 51.0 51.0 50.0 55.0 0.0 55.0 16 56.0 73.7 50.3 62.0 60.0 59.0 58.0 56.0 55.0 52.0 52.0 51.0 56.0 0.0 56.0 17 55.5 74.8 49.1 62.0 60.0 58.0 57.0 55.0 54.0 52.0 51.0 50.0 55.5 0.0 55.5 18 55.2 71.8 47.6 63.0 61.0 58.0 57.0 55.0 53.0 51.0 50.0 49.0 55.2 0.0 55.2 19 55.2 70.6 47.6 64.0 62.0 59.0 58.0 54.0 52.0 50.0 49.0 49.0 55.2 5.0 60.2 20 52.6 64.6 44.0 61.0 59.0 56.0 55.0 52.0 51.0 48.0 47.0 45.0 52.6 5.0 57.6 21 49.2 66.1 43.9 56.0 54.0 52.0 51.0 49.0 48.0 45.0 45.0 44.0 49.2 5.0 54.2 22 49.3 61.9 44.0 53.0 53.0 52.0 51.0 50.0 48.0 46.0 46.0 45.0 49.3 10.0 59.3 23 49.9 63.9 45.4 58.0 53.0 52.0 51.0 49.0 48.0 47.0 46.0 46.0 49.9 10.0 59.9 Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99% Min 54.9 66.5 47.6 61.0 59.0 58.0 57.0 55.0 53.0 51.0 50.0 49.0 Max 57.2 85.2 50.3 66.0 63.0 60.0 60.0 58.0 55.0 53.0 52.0 51.0 56.2 62.8 60.9 58.9 58.2 56.0 54.0 51.5 50.9 49.8 Min 49.2 64.6 43.9 56.0 54.0 52.0 51.0 49.0 48.0 45.0 45.0 44.0 Max 55.2 70.6 47.6 64.0 62.0 59.0 58.0 54.0 52.0 50.0 49.0 49.0 53.0 60.3 58.3 55.7 54.7 51.7 50.3 47.7 47.0 46.0 Min 44.5 53.1 41.1 49.0 48.0 47.0 46.0 44.0 43.0 42.0 42.0 42.0 Max 53.8 78.8 48.3 66.0 57.0 56.0 55.0 54.0 53.0 50.0 50.0 49.0 50.0 54.4 52.4 50.4 49.8 48.0 46.9 45.0 44.7 44.1 Evening L1 - Located northwest of the Project site on Cliff Drive in an existing park near residential homes. 24-Hour Noise Level Measurement Summary Tuesday, February 26, 2019 Hourly L eq dBA Readings (unadjusted) Night Day Night L eq (dBA) Day Energy Average Average: 24-Hour Daytime Nighttime Evening 24-Hour CNEL (dBA) 54.3 55.7 50.0 Energy Average Average:58.2Night Energy Average Average:48.346.344.844.553.349.553.856.855.755.757.057.057.257.154.955.056.055.555.255.252.649.249.349.935.040.045.050.055.060.065.070.075.080.085.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23Hourly Leq(dBA)Hour Beginning U:\UcJobs\_12100-12500\_12300\12356\Fieldwork\12356_L1_Summary 49 Date:Location:Meter:Piccolo I JN:12356 Project:215 Riverside Analyst:R. Saber Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99%L eq Adj.Adj. L eq 0 43.5 53.4 38.5 49.0 47.0 46.0 45.0 44.0 42.0 41.0 40.0 40.0 43.5 10.0 53.5 1 43.0 56.3 38.5 49.0 48.0 46.0 46.0 43.0 41.0 40.0 40.0 38.0 43.0 10.0 53.0 2 41.5 59.0 38.5 48.0 46.0 43.0 42.0 41.0 40.0 38.0 38.0 38.0 41.5 10.0 51.5 3 41.2 55.1 39.9 45.0 44.0 43.0 42.0 41.0 40.0 40.0 40.0 40.0 41.2 10.0 51.2 4 47.6 71.2 40.2 59.0 54.0 47.0 45.0 42.0 41.0 40.0 40.0 40.0 47.6 10.0 57.6 5 47.1 65.7 41.6 54.0 52.0 50.0 49.0 47.0 45.0 43.0 43.0 42.0 47.1 10.0 57.1 6 52.9 66.4 45.1 63.0 61.0 58.0 55.0 51.0 49.0 47.0 47.0 46.0 52.9 10.0 62.9 7 56.2 69.4 46.7 64.0 63.0 61.0 60.0 57.0 52.0 49.0 48.0 47.0 56.2 0.0 56.2 8 56.7 70.0 44.0 65.0 64.0 62.0 60.0 57.0 53.0 47.0 46.0 45.0 56.7 0.0 56.7 9 54.9 69.2 43.6 63.0 62.0 60.0 59.0 55.0 52.0 47.0 46.0 45.0 54.9 0.0 54.9 10 56.5 68.4 44.9 64.0 63.0 61.0 60.0 57.0 54.0 48.0 47.0 46.0 56.5 0.0 56.5 11 55.0 68.4 44.6 62.0 61.0 59.0 58.0 56.0 52.0 48.0 47.0 46.0 55.0 0.0 55.0 12 54.1 73.1 44.0 61.0 60.0 58.0 57.0 54.0 51.0 48.0 47.0 45.0 54.1 0.0 54.1 13 56.6 75.5 45.1 67.0 62.0 60.0 59.0 56.0 53.0 50.0 49.0 47.0 56.6 0.0 56.6 14 53.7 67.3 44.3 62.0 60.0 58.0 57.0 54.0 51.0 47.0 46.0 45.0 53.7 0.0 53.7 15 55.3 76.8 45.1 64.0 63.0 60.0 58.0 53.0 51.0 48.0 47.0 46.0 55.3 0.0 55.3 16 55.0 73.2 45.9 63.0 61.0 59.0 58.0 55.0 53.0 49.0 49.0 47.0 55.0 0.0 55.0 17 54.3 70.3 45.4 62.0 60.0 58.0 57.0 54.0 52.0 49.0 48.0 46.0 54.3 0.0 54.3 18 54.1 73.2 44.3 61.0 60.0 58.0 57.0 53.0 51.0 48.0 48.0 46.0 54.1 0.0 54.1 19 54.1 69.3 44.7 63.0 62.0 59.0 57.0 53.0 50.0 47.0 46.0 45.0 54.1 5.0 59.1 20 51.7 71.2 40.3 62.0 60.0 57.0 54.0 50.0 48.0 44.0 43.0 41.0 51.7 5.0 56.7 21 48.2 68.4 38.5 58.0 55.0 52.0 51.0 47.0 44.0 41.0 40.0 40.0 48.2 5.0 53.2 22 47.7 69.1 40.1 55.0 53.0 51.0 51.0 47.0 44.0 41.0 41.0 40.0 47.7 10.0 57.7 23 45.4 61.0 41.2 52.0 51.0 49.0 47.0 45.0 44.0 42.0 42.0 41.0 45.4 10.0 55.4 Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99% Min 53.7 67.3 43.6 61.0 60.0 58.0 57.0 53.0 51.0 47.0 46.0 45.0 Max 56.7 76.8 46.7 67.0 64.0 62.0 60.0 57.0 54.0 50.0 49.0 47.0 55.3 63.2 61.6 59.5 58.3 55.1 52.1 48.2 47.3 45.9 Min 48.2 68.4 38.5 58.0 55.0 52.0 51.0 47.0 44.0 41.0 40.0 40.0 Max 54.1 71.2 44.7 63.0 62.0 59.0 57.0 53.0 50.0 47.0 46.0 45.0 52.0 61.0 59.0 56.0 54.0 50.0 47.3 44.0 43.0 42.0 Min 41.2 53.4 38.5 45.0 44.0 43.0 42.0 41.0 40.0 38.0 38.0 38.0 Max 52.9 71.2 45.1 63.0 61.0 58.0 55.0 51.0 49.0 47.0 47.0 46.0 47.2 52.7 50.7 48.1 46.9 44.6 42.9 41.3 41.2 40.6 Energy Average Average:56.3Night Energy Average Average: Evening 24-Hour CNEL (dBA) 53.2 54.8 47.2 Night L eq (dBA) Day Energy Average Average: 24-Hour Daytime Nighttime Evening L2 - Located within the existing parking structure at the Project site, south of existing residential homes. 24-Hour Noise Level Measurement Summary Tuesday, February 26, 2019 Hourly L eq dBA Readings (unadjusted) Night Day 43.543.041.541.247.647.152.956.256.754.956.555.054.156.653.755.355.054.354.154.151.748.247.745.435.040.045.050.055.060.065.070.075.080.085.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23Hourly Leq(dBA)Hour Beginning U:\UcJobs\_12100-12500\_12300\12356\Fieldwork\12356_L2_Summary 50 Date:Location:Meter:Piccolo I JN:12356 Project:215 Riverside Analyst:R. Saber Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99%L eq Adj.Adj. L eq 0 52.1 72.3 38.8 61.0 59.0 56.0 55.0 53.0 45.0 39.0 39.0 38.0 52.1 10.0 62.1 1 51.2 72.0 38.7 60.0 58.0 56.0 56.0 51.0 40.0 39.0 39.0 38.0 51.2 10.0 61.2 2 50.2 72.6 37.4 60.0 59.0 58.0 57.0 42.0 40.0 39.0 38.0 38.0 50.2 10.0 60.2 3 49.4 73.1 38.9 63.0 59.0 52.0 48.0 42.0 40.0 39.0 39.0 39.0 49.4 10.0 59.4 4 57.7 72.1 40.6 68.0 67.0 64.0 62.0 56.0 49.0 43.0 42.0 40.0 57.7 10.0 67.7 5 62.2 83.1 42.8 71.0 69.0 68.0 67.0 61.0 55.0 47.0 45.0 44.0 62.2 10.0 72.2 6 66.6 77.8 45.3 74.0 73.0 71.0 70.0 68.0 64.0 52.0 49.0 48.0 66.6 10.0 76.6 7 66.1 85.5 43.6 74.0 72.0 70.0 70.0 67.0 63.0 54.0 51.0 46.0 66.1 0.0 66.1 8 65.1 80.8 43.7 73.0 71.0 70.0 69.0 66.0 62.0 53.0 50.0 45.0 65.1 0.0 65.1 9 63.1 80.3 43.7 71.0 69.0 68.0 67.0 64.0 59.0 50.0 49.0 46.0 63.1 0.0 63.1 10 63.5 78.3 42.7 70.0 69.0 68.0 67.0 64.0 61.0 52.0 50.0 46.0 63.5 0.0 63.5 11 64.4 81.4 43.8 72.0 70.0 69.0 68.0 65.0 62.0 53.0 50.0 46.0 64.4 0.0 64.4 12 64.3 88.2 44.4 71.0 69.0 68.0 67.0 64.0 61.0 52.0 50.0 47.0 64.3 0.0 64.3 13 62.7 90.2 41.9 69.0 68.0 66.0 65.0 63.0 59.0 51.0 48.0 45.0 62.7 0.0 62.7 14 61.5 77.1 43.7 68.0 67.0 66.0 65.0 62.0 59.0 52.0 50.0 47.0 61.5 0.0 61.5 15 62.8 82.1 48.1 69.0 68.0 66.0 65.0 63.0 61.0 55.0 53.0 51.0 62.8 0.0 62.8 16 63.2 82.4 46.2 70.0 69.0 67.0 66.0 64.0 61.0 54.0 52.0 49.0 63.2 0.0 63.2 17 63.7 82.4 40.6 71.0 70.0 68.0 67.0 65.0 61.0 51.0 48.0 45.0 63.7 0.0 63.7 18 61.7 74.8 41.7 69.0 68.0 67.0 66.0 63.0 58.0 48.0 46.0 43.0 61.7 0.0 61.7 19 61.0 81.3 39.8 69.0 68.0 66.0 65.0 61.0 55.0 44.0 43.0 41.0 61.0 5.0 66.0 20 60.7 86.1 38.9 70.0 69.0 66.0 65.0 58.0 51.0 41.0 40.0 39.0 60.7 5.0 65.7 21 57.7 76.5 38.9 69.0 67.0 64.0 62.0 53.0 47.0 41.0 40.0 40.0 57.7 5.0 62.7 22 56.7 75.0 45.1 67.0 66.0 62.0 60.0 53.0 51.0 48.0 47.0 46.0 56.7 10.0 66.7 23 55.6 73.3 45.1 66.0 63.0 58.0 57.0 55.0 53.0 50.0 49.0 47.0 55.6 10.0 65.6 Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99% Min 61.5 74.8 40.6 68.0 67.0 66.0 65.0 62.0 58.0 48.0 46.0 43.0 Max 66.1 90.2 48.1 74.0 72.0 70.0 70.0 67.0 63.0 55.0 53.0 51.0 63.7 70.6 69.2 67.8 66.8 64.2 60.6 52.1 49.8 46.3 Min 57.7 76.5 38.9 69.0 67.0 64.0 62.0 53.0 47.0 41.0 40.0 39.0 Max 61.0 86.1 39.8 70.0 69.0 66.0 65.0 61.0 55.0 44.0 43.0 41.0 60.0 69.3 68.0 65.3 64.0 57.3 51.0 42.0 41.0 40.0 Min 49.4 72.0 37.4 60.0 58.0 52.0 48.0 42.0 40.0 39.0 38.0 38.0 Max 66.6 83.1 45.3 74.0 73.0 71.0 70.0 68.0 64.0 52.0 49.0 48.0 59.6 65.6 63.7 60.6 59.1 53.4 48.6 44.0 43.0 42.0 Evening L3 - Located northeast of the Project site on Riverside Avenue adjacent to an existing park. 24-Hour Noise Level Measurement Summary Tuesday, February 26, 2019 Hourly L eq dBA Readings (unadjusted) Night Day Night L eq (dBA) Day Energy Average Average: 24-Hour Daytime Nighttime Evening 24-Hour CNEL (dBA) 62.1 63.2 59.6 Energy Average Average:67.0Night Energy Average Average:52.151.250.249.457.762.266.666.165.163.163.564.464.362.761.562.863.263.761.761.060.757.756.755.635.040.045.050.055.060.065.070.075.080.085.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23Hourly Leq(dBA)Hour Beginning U:\UcJobs\_12100-12500\_12300\12356\Fieldwork\12356_L3_Summary 51 Date:Location:Meter:Piccolo I JN:12356 Project:215 Riverside Analyst:R. Saber Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99%L eq Adj.Adj. L eq 0 43.6 59.0 39.4 51.0 50.0 48.0 47.0 43.0 41.0 40.0 40.0 40.0 43.6 10.0 53.6 1 41.4 52.9 39.4 49.0 48.0 43.0 42.0 40.0 40.0 39.0 39.0 39.0 41.4 10.0 51.4 2 40.7 50.6 39.4 45.0 43.0 42.0 41.0 40.0 40.0 39.0 39.0 39.0 40.7 10.0 50.7 3 45.5 67.2 39.3 56.0 53.0 48.0 44.0 41.0 40.0 39.0 39.0 39.0 45.5 10.0 55.5 4 44.9 53.9 39.9 50.0 49.0 48.0 47.0 45.0 43.0 41.0 40.0 40.0 44.9 10.0 54.9 5 50.2 65.0 45.4 55.0 54.0 53.0 52.0 50.0 49.0 47.0 46.0 46.0 50.2 10.0 60.2 6 55.7 77.8 44.1 64.0 63.0 61.0 60.0 55.0 50.0 46.0 46.0 45.0 55.7 10.0 65.7 7 55.7 78.4 44.3 66.0 64.0 61.0 59.0 53.0 50.0 46.0 46.0 45.0 55.7 0.0 55.7 8 53.7 70.3 42.9 65.0 62.0 59.0 57.0 51.0 48.0 46.0 45.0 44.0 53.7 0.0 53.7 9 58.0 76.2 45.1 68.0 65.0 63.0 61.0 57.0 53.0 48.0 47.0 46.0 58.0 0.0 58.0 10 56.7 80.7 46.0 67.0 64.0 61.0 59.0 53.0 50.0 47.0 47.0 46.0 56.7 0.0 56.7 11 54.6 72.1 44.8 64.0 62.0 60.0 58.0 53.0 50.0 47.0 46.0 45.0 54.6 0.0 54.6 12 56.0 74.9 45.2 68.0 64.0 61.0 58.0 52.0 49.0 47.0 46.0 46.0 56.0 0.0 56.0 13 61.9 89.7 44.0 65.0 63.0 60.0 58.0 53.0 50.0 47.0 46.0 45.0 61.9 0.0 61.9 14 58.2 80.9 45.4 67.0 65.0 63.0 60.1 54.0 52.0 48.0 47.0 46.0 58.2 0.0 58.2 15 56.5 76.1 46.6 65.0 64.0 62.0 59.0 54.0 52.0 49.0 48.0 47.0 56.5 0.0 56.5 16 54.5 75.4 44.1 65.0 62.0 59.0 57.0 52.0 49.0 47.0 46.0 45.0 54.5 0.0 54.5 17 53.0 65.9 43.1 62.0 61.0 59.0 57.0 52.0 49.0 47.0 46.0 44.0 53.0 0.0 53.0 18 55.2 71.2 44.0 65.0 64.0 61.0 60.0 53.0 49.0 46.0 45.0 44.0 55.2 0.0 55.2 19 52.0 67.9 41.1 64.0 62.0 57.0 54.0 49.0 47.0 44.0 43.0 42.0 52.0 5.0 57.0 20 48.6 67.9 39.3 60.0 58.0 54.0 50.0 46.0 43.0 40.0 40.0 39.0 48.6 5.0 53.6 21 51.9 74.3 39.4 65.0 61.0 53.0 50.0 45.0 43.0 40.0 40.0 39.0 51.9 5.0 56.9 22 45.8 68.3 40.6 53.0 51.0 49.0 48.0 44.0 43.0 41.0 41.0 41.0 45.8 10.0 55.8 23 46.4 64.4 39.9 60.0 54.0 49.0 47.0 44.0 41.0 40.0 40.0 40.0 46.4 10.0 56.4 Timeframe Hour L eq L max L min L1%L2%L5%L8%L25%L50%L90%L95%L99% Min 53.0 65.9 42.9 62.0 61.0 59.0 57.0 51.0 48.0 46.0 45.0 44.0 Max 61.9 89.7 46.6 68.0 65.0 63.0 61.0 57.0 53.0 49.0 48.0 47.0 56.9 65.6 63.3 60.8 58.6 53.1 50.1 47.1 46.3 45.3 Min 48.6 67.9 39.3 60.0 58.0 53.0 50.0 45.0 43.0 40.0 40.0 39.0 Max 52.0 74.3 41.1 65.0 62.0 57.0 54.0 49.0 47.0 44.0 43.0 42.0 51.1 63.0 60.3 54.7 51.3 46.7 44.3 41.3 41.0 40.0 Min 40.7 50.6 39.3 45.0 43.0 42.0 41.0 40.0 40.0 39.0 39.0 39.0 Max 55.7 77.8 45.4 64.0 63.0 61.0 60.0 55.0 50.0 47.0 46.0 46.0 48.7 53.7 51.7 49.0 47.6 44.7 43.0 41.3 41.1 41.0 Energy Average Average:57.6Night Energy Average Average: Evening 24-Hour CNEL (dBA) 54.6 56.2 48.7 Night L eq (dBA) Day Energy Average Average: 24-Hour Daytime Nighttime Evening L4 - Located east of the Project site on Ocean View Avenue adjacent to existing residential homes. 24-Hour Noise Level Measurement Summary Tuesday, February 26, 2019 Hourly L eq dBA Readings (unadjusted) Night Day 43.641.440.745.544.950.255.755.753.758.056.754.656.061.958.256.554.553.055.252.048.651.945.846.435.040.045.050.055.060.065.070.075.080.085.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23Hourly Leq(dBA)Hour Beginning U:\UcJobs\_12100-12500\_12300\12356\Fieldwork\12356_L4_Summary 52 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study APPENDIX 6.1: CADNAA NOISE MODEL DATA INPUTS & RESULTS 53 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 54 12352 CadnaA Noise Prediction Model 12352‐03.cna Date: 04.03.19 Analyst: A.Wolfe Receiver Noise Levels Name ID Level Lr Height Coordinates Day X Y Z (dBA)(m)(m)(m)(m) 1 1 28.4 1.52 r 1844518.39 662676.10 17.13 2 2 26.7 1.52 r 1844553.45 662677.42 16.52 3 3 45.5 1.52 r 1844688.05 662672.54 18.14 4 4 48.2 1.52 r 1844720.49 662661.88 17.59 5 5 40.8 1.52 r 1844762.84 662635.66 15.52 6 6 37.9 1.52 r 1844748.35 662622.30 9.52 7 7 37.4 1.52 r 1844690.22 662615.80 6.36 Area Source(s) Name Result. PWL Lw / Li Day Night Type Value norm. (dBA)(dBA)dB(A) Parking Lot 69.9 69.9 Lw 69.9 HVAC 88.9 88.9 Lw 88.9 HVAC 88.9 88.9 Lw 88.9 Barrier(s) Name Absorption Height left right Begin End (m)(m) BARRIERS 0.21 0.21 2.44 g BARRIERS 0.21 0.21 2.44 g BARRIERS 0.21 0.21 1.83 g Building(s) Name Absorption Height Begin (m) BUILDINGS 0.21 3.05 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 9.14 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 3.05 g BUILDINGS 0.21 9.14 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 3.05 r BUILDINGS 0.21 6.10 r BUILDINGS 0.21 6.10 r Urban Crossroads, Inc.55 215 Riverside Avenue Noise Impact Analysis 12356-03 Noise Study This page intentionally left blank 56