city of simi valley memorandum

S-1 CUPS0793 Supplemental(ks)

CITY OF SIMI VALLEY MEMORANDUM

June 7, 2017 TO: Planning Commission FROM: Stratis Perros, Deputy Director/City Planner SUBJECT: SUPPLEMENT TO PLANNING COMMISSION AGENDA ITEM 11.A.1;

CUP-S-793: Meridian Realty Advisors, L.P.: A request to approve a Conditional Use Permit to construct a new 106-bed, three-story residential care facility and a determination that the project is exempt from the California Environmental Quality Act

In response to the staff report prepared for the above agenda item, the adjacent westerly neighbor has submitted comments on the staff report (Attachment A). The neighbor's comments are numbered on the Comment Letter and staff's responses thereto, are detailed below with the corresponding number: 1. Remove the proposed tree from the southeast corner of the project site to

maintain visibility of the commercial building located to the immediate west of the proposed project site. Condition *C-8 requires removing the proposed tree from the southeast corner of the project site. The subject tree is not required and low shrubs can be installed in this planter. The applicant agreed with this Condition.

2. Concern that the proposed residents may be disturbed by noise from the existing

automotive uses located in the building immediately west of the proposed project site. These automotive repair tools typically have high sound for short bursts of time. The Noise Study is shown in Exhibit 1, Meridian Assisted Living/Memory Care – Noise Study. In response to the westerly neighbor’s concerns, Memorandum #1 to the initial Noise Study was prepared to address this issue (Exhibit 2). The analysis in Memorandum #1 recognizes: (a) the sound levels generated by automotive repair activities observed and expected on the site, (b) the noise generation being six feet below the first residential floor, and (c) traffic noise levels from Los Angeles Avenue. The overall conclusion in Memorandum #1 is that there would not be noise impacts on the future residents since the City’s General Plan standard of 45dbA-CNEL would be met. The Building Code also requires that interior noise standards must be met. The Noise Study did find a need to upgrade the noise insulating qualities of windows facing Los Angeles Avenue. It is recommended that new Condition *A-18 be adopted to ensure implementation of the Noise Reduction Measures in the Noise Study to mitigate traffic noise on Los Angeles Avenue. The applicant agreed with this Condition:

*A-18 Applicant must ensure that all windows directly facing Los Angeles

Avenue will have a minimum Sound Transmission Class rating of 27.

SUPPLEMENTAL

AGENDA ITEM NO.

11.A.1

CUP-S-793 Meridian Realty Advisors, L.P.

S-2 CUPS0793 Supplemental(ks)

3. The visible portions of the proposed six-foot high retaining wall on the project site’s west property line facing the neighbor’s parking lot and building should have an aesthetically pleasing treatment. Condition *A-16 requires using slumpstone for all exposed retaining walls and garden walls. This would apply to the subject retaining wall. The applicant agreed with this Condition.

4. The noise study does not detail the methodology used to determine that the

automotive repair services to the west will not impact future residents of the proposed facility. Noise study methodology as described in Exhibit 1, Section 5.3, indicates that Sound Plan modeling was used to analyze the project area noise.

Attachment A: Comment Letter from Gaines & Stacey LLP ..................................... S-3 Exhibit 1: Meridian Assisted Living/Memory Care – Noise Study Exhibit 2: Meridian Assisted Living/Memory Care – Noise Study – Memorandum #1

FRED GAINES

SHERMAN L. STACEY

LISA A. WEINBERG*

REBECCA A. THOMPSON*

NANCI SESSIONS-STACEY

KIMBERLY A. RIBLE

ALICIA B. BARTLEY

•• profess/onal corpa,al/on

Planning Commission City of Simi Valley 2929 Tapo Canyon Road Simi Valley, CA 93063-2199

Re: Case No. CUP-S-793

LAW OFFICES OF

GAINES & STACEY LLP

16633 VENTURA BOULEVARD, SUITE 1220 ENCINO, CA91436-1872

June 2, 2017

ORIGINAL VIA U.S. MAIL

525 E. Los Angeles A venue

Dear Honorable Commissioners:

TELEPHONE (818) 933-0200 FACSIMILE (818) 933-0222

INTERNET: WWW.GAINESLAW.COM

This office represents Survivor's Trust of the Roger & Lynda Brown Trust, Survivor's Trust of the Henry & Sala Frydrych Family Trust and J & S Frydrych Family Trust, collectively doing business as Henson B. Development, with regard to its interests in the pending application for a new residential care facility located at 525 E. Los Angeles Avenue (the "Project"). Our client is the owner of the adjacent property to the west, located at 521 E. Los Angeles Avenue.

Our client has three primary concerns with regard to the proposed project. First, it is concerned with decreased visibility of its commercial buildings. Its tenants rely on visibility from the street for the livelihood of their respective businesses, and care should be taken to reduce the Project's impact on the visibility of our client's buildings to the extent possible. To address this issue, we note that one tree proposed to be planted near the south west comer of the project site would likely block our client's existing pole sign. As such, should the Project be approved, we request that approval be conditioned on removing the subject tree from the landscaping plan.

In addition, or client is concerned with potential complaints from future residents regarding noise. The automotive uses at our client's property have been long established. Tools are often used that have high sound for short bursts of time. While the average sound level coming from our client's propert'J measured over time complies with the Cit-/ s regulations regarding maximum noise levels, we are concerned that future residents of the project will lodge complaints regarding the intermittent noise caused by these tools. Given that the proposed assisted living facility would be considered a sensitive receptor, please condition Project approval on adequate noise insulation to mitigate any impacts caused by short bursts of high sound.

G&S\2197-001

ATTACHMENT A

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Planning Commission June 2, 2017 Page 2

Last, our client is concerned with treatment of the retaining wall on the Project's west property line. We understand that the retaining wall will be approximately six feet in height, and is needed due to the requirement that the Project site be raised out of the flood plain. As this wall will be immediately next to our client's parking lot, we request that Project approval be conditioned on finishing the visibie ponions of the waU with an aestheiicaUy pieasing treatment

Please note that we have communicated these concerns to the applicant's representative, Larry Greene, who expressed willingness to address our client's concerns. Specifically, Mr. Greene represented that the applicant is open to removing or relocating any trees that block visibility to our client's property, subject to City approval. With regard to the wall, Mr. Greene agreed to provide information regarding the color and texture of the masonry wall to us once those details are refined. Last, Mr. Greene provided us with an acoustic report that concludes that noise coming from our client's property will not impact future residents of the Project. We note that the report does not indicate the ambient noise measurement locations, does not define what is meant by "projected noise level is anticipated to range between 52.0 and 58.0 dBA ... ", and does not indicate the noise from the pneumatic screw gun operation was actually measured.

Moreover, it appears that the report's projected noise level is a range over time, and as such the report does not address our client's concern that future residents of the project will lodge complaints regarding the intermittent noise caused by these tools. Given these weaknesses in the applicant's acoustic report, we request that the Project be conditioned on installing acoustic windows on its west facing facade to mitigate intermittent noise impacts to the greatest extent possible.

Thank you for your consideration and attention to this matter. As always, please do not hesitate to contact me at any time with any questions or comments you may have.

Sincerely,

GAINES & STACEYLLP

By FREDG

G&S\2197-00 I

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Planning Commission June 2, 2017 Page 3

cc: All City Planning Commission Members Via Email: [email protected] [email protected] [email protected] [email protected] [email protected]

V em Umetsu, Department of Environmental Services (Via Email: [email protected])

G&S\2197-00 I

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Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Prepared for: Meridian Realty Advisors 3811 Turtle Creek Blvd, Ste 1050 Dallas, TX 93065 Prepared by: MD Acoustics Mike Dickerson, INCE 1197 Los Angeles Ave, Ste C-256 Simi Valley, CA 93065 Date: 3/29/2016

EXHIBIT 1

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Table of Contents

MD Acoustics ii JN: 01761601_Report

TABLE OF CONTENTS

1.0 Introduction .................................................................................................................................... 1 1.1 Purpose of Analysis and Study Objectives 1 1.2 Site Location and Study Area 1 1.3 Proposed Project Description 1

2.0 Fundamentals of Noise ................................................................................................................... 4 2.1 Sound, Noise and Acoustics 4 2.2 Frequency and Hertz 4 2.3 Sound Pressure Levels and Decibels 4 2.4 Addition of Decibels 4 2.5 Human Response to Changes in Noise Levels 5 2.6 Noise Descriptors 5 2.7 Traffic Noise Prediction 6 2.8 Sound Propagation 6

3.0 Ground-Bourne Vibration Fundamentals ....................................................................................... 8 3.1 Vibration Descriptors 8 3.2 Vibration Perception 8 3.3 Vibration Perception 8

4.0 Regulatory Setting ......................................................................................................................... 10 4.1 Federal Regulations 10 4.2 State Regulations 10 4.3 City of Simi Valley Noise Regulations 11

5.0 Study Method and Procedure ....................................................................................................... 15 5.1 Noise Measurement Procedure and Criteria 15 5.2 Long-Term Noise Measurement Locations 15 5.3 Traffic Noise Modeling 17

6.0 Existing Noise Environment .......................................................................................................... 18 6.1 Long-Term Noise Measurement Results 18

7.0 Future Noise Environment Impacts and Mitigation ..................................................................... 20 7.1 Future Exterior Noise 20

7.1.1 Traffic Source Noise 20 7.2 Future Interior Noise 20 7.3 Summary of Noise Reduction Measures 20

8.0 Construction Noise Impact ........................................................................................................... 23 8.1 Construction Noise 23 8.2 Construction Vibration 24 8.3 Construction Noise Reduction Measures 24

9.0 References .................................................................................................................................... 25


MD Acoustics iii JN: 01761601_Report

LIST OF APPENDICES

Appendix A: Photographs and Field Measurement Data ....................................................................... 2

Appendix B: SoundPLAN Input/Outputs ................................................................................................ 3

LIST OF EXHIBITS

Exhibit A: Location Map ..................................................................................................................... 2

Exhibit B: Site Plan .............................................................................................................................. 3

Exhibit C: Typical A-Weighted Noise Levels ....................................................................................... 4

Exhibit D: Land Use Compatibility Guidelines .................................................................................. 11

Exhibit E: Measurement Locations .................................................................................................. 16

Exhibit F: Future Noise Level Projections ........................................................................................ 21

Exhibit G: Future Noise Level Contours ............................................................................................ 22


MD Acoustics iv JN: 01761601_Report

LIST OF TABLES

Table 1: Long-term Noise Measurement Data (dBA)1 .............................................................................. 18

Table 2: Typical Construction Noise Levels1 ............................................................................................. 23

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Introduction

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1.0 Introduction

1.1 Purpose of Analysis and Study Objectives This noise assessment was prepared to evaluate whether the potential noise impacts associated with the project would cause a significant impact to and from the project site. The assessment was conducted and compared to the noise standards set-forth by the Federal, State and Local agencies. Consistent with the California Environmental Quality Act (CEQA) and CEQA Guidelines, a significant impact related to noise would occur if a proposed project is determined to result in:

x Exposure of persons to or generation of noise levels in excess of standards established in the local General Plan or noise ordinance, or applicable agencies.

x Exposure of persons to or generation of excessive groundborne vibration or goundborne noise levels.

x A substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project.

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

The following is provided in this report:

x A description of the study area and the proposed project x Information regarding the fundamentals of noise x A description of the local noise guidelines and standards x An evaluation of the existing ambient noise environment x An analysis of traffic noise impacts to the project site x An analysis of construction noise impacts

1.2 Site Location and Study Area The project site is located at 525 E Los Angeles Avenue, in the City of Simi Valley, California, as shown in Exhibit A. The land uses surrounding the Project include commercial to the east, west, and south with the arroyo directly to the north.

1.3 Proposed Project Description The Project proposes to develop a 20 unit / 30 bed memory care, 74 unit / 77 bed 3-story assisted living facility with a subterranean parking garage. This study assesses the potential traffic noise impact to the project site and compares the results to the applicable City noise limits. The primary source of traffic noise propagates from Los Angeles Avenue. The site plan used for this is illustrated in Exhibit B.

Meridian Assisted Living/Memory CareNoise Impact StudyCity of Simi Valley, CA

Exhibit A

Location Map

2

SITE

Introduction


Exhibit B

Site Plan

3

Introduction

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Fundamentals of Noise

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2.0 Fundamentals of Noise

This section of the report provides basic information about noise and presents some of the terms used within the report.

2.1 Sound, Noise and Acoustics Sound is a disturbance created by a moving or vibrating source and is capable of being detected by the hearing organs. Sound may be thought of as mechanical energy of a moving object transmitted by pressure waves through a medium to a human ear. For traffic, or stationary noise, the medium of concern is air. Noise is defined as sound that is loud, unpleasant, unexpected, or unwanted.

2.2 Frequency and Hertz

A continuous sound is described by its frequency (pitch) and its amplitude (loudness). Frequency relates to the number of pressure oscillations per second. Low-frequency sounds are low in pitch (bass sounding) and high-frequency sounds are high in pitch (squeak). These oscillations per second (cycles) are commonly referred to as Hertz (Hz). The human ear can hear from the bass pitch starting out at 20 Hz all the way to the high pitch of 20,000 Hz.

2.3 Sound Pressure Levels and Decibels

The amplitude of a sound determines it loudness. The loudness of sound increases or decreases as the amplitude increases or decreases. Sound pressure amplitude is measure in units of micro-Newton per square inch meter (N/m2), also called micro-Pascal (µPa). One µPa is approximately one hundred billionths (0.00000000001) of normal atmospheric pressure. Sound pressure level (SPL or Lp) is used to describe in logarithmic units the ratio of actual sound pressures to a reference pressure squared. These units are called decibels abbreviated dB. Exhibit C illustrates references sound levels for different noise sources.

2.4 Addition of Decibels

Because decibels are on a logarithmic scale, sound pressure levels cannot be added or subtracted by simple plus or minus addition. When two sounds or equal SPL are combined, they will produce an SPL 3 dB greater than the original single SPL. In other words, sound energy must be doubled to produce a 3 dB increase. If two sounds differ by approximately 10 dB, the higher sound level is the predominant sound.

Exhibit C: Typical A-Weighted Noise Levels


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2.5 Human Response to Changes in Noise Levels

In general, the healthy human ear is most sensitive to sounds between 1,000 Hz and 5,000 Hz, (A-weighted scale) and it perceives a sound within that range as being more intense than a sound with a higher or lower frequency with the same magnitude. For purposes of this report as well as with most environmental documents, the A-scale weighting is typically reported in terms of A-weighted decibel (dBA). Typically, the human ear can barely perceive the change in noise level of 3 dB. A change in 5 dB is readily perceptible, and a change in 10 dB is perceived as being twice or half as loud. As previously discussed, a doubling of sound energy results in a 3 dB increase in sound, which means that a doubling of sound energy (e.g. doubling the volume of traffic on a highway) would result in a barely perceptible change in sound level.

2.6 Noise Descriptors

Noise in our daily environment fluctuates over time. Some noise levels occur in regular patterns, others are random. Some noise levels are constant while others are sporadic. Noise descriptors were created to describe the different time-varying noise levels.

A-Weighted Sound Level: The sound pressure level in decibels as measured on a sound level meter using the A-weighted filter network. The A-weighting filter de-emphasizes the very low and very high frequency components of the sound in a manner similar to the response of the human ear. A numerical method of rating human judgment of loudness.

Ambient Noise Level: The composite of noise from all sources, near and far. In this context, the ambient noise level constitutes the normal or existing level of environmental noise at a given location.

Community Noise Equivalent Level (CNEL): The average equivalent A-weighted sound level during a 24-hour day, obtained after addition of five (5) decibels to sound levels in the evening from 7:00 to 10:00 PM and after addition of ten (10) decibels to sound levels in the night before 7:00 AM and after 10:00 PM.

Decibel (dB): A unit for measuring the amplitude of a sound, equal to 20 times the logarithm to the base 10 of the ratio of the pressure of the sound measured to the reference pressure, which is 20 micro-pascals.

dB(A): A-weighted sound level (see definition above).

Equivalent Sound Level (LEQ): The sound level corresponding to a steady noise level over a given sample period with the same amount of acoustic energy as the actual time varying noise level. The energy average noise level during the sample period.

Habitable Room: Any room meeting the requirements of the Uniform Building Code or other applicable regulations which is intended to be used for sleeping, living, cooking or dining purposes, excluding such enclosed spaces as closets, pantries, bath or toilet rooms, service rooms, connecting corridors, laundries, unfinished attics, foyers, storage spaces, cellars, utility rooms and similar spaces.


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L(n): The A-weighted sound level exceeded during a certain percentage of the sample time. For example, L10 in the sound level exceeded 10 percent of the sample time. Similarly L50, L90 and L99, etc.

Noise: Any unwanted sound or sound which is undesirable because it interferes with speech and hearing, or is intense enough to damage hearing, or is otherwise annoying. The State Noise Control Act defines noise as "...excessive undesirable sound...".

Outdoor Living Area: Outdoor spaces that are associated with residential land uses typically used for passive recreational activities or other noise-sensitive uses. Such spaces include patio areas, barbecue areas, jacuzzi areas, etc. associated with residential uses; outdoor patient recovery or resting areas associated with hospitals, convalescent hospitals, or rest homes; outdoor areas associated with places of worship which have a significant role in services or other noise-sensitive activities; and outdoor school facilities routinely used for educational purposes which may be adversely impacted by noise. Outdoor areas usually not included in this definition are: front yard areas, driveways, greenbelts, maintenance areas and storage areas associated with residential land uses; exterior areas at hospitals that are not used for patient activities; outdoor areas associated with places of worship and principally used for short-term social gatherings; and, outdoor areas associated with school facilities that are not typically associated with educational uses prone to adverse noise impacts (for example, school play yard areas).

Percent Noise Levels: See L(n).

Sound Level (Noise Level): The weighted sound pressure level obtained by use of a sound level meter having a standard frequency-filter for attenuating part of the sound spectrum.

Sound Level Meter: An instrument, including a microphone, an amplifier, an output meter, and frequency weighting networks for the measurement and determination of noise and sound levels.

Single Event Noise Exposure Level (SENEL): The dB(A) level which, if it lasted for one second, would produce the same A-weighted sound energy as the actual event.

2.7 Traffic Noise Prediction

Noise levels associated with traffic depends on a variety of factors: (1) volume of traffic, (2) speed of traffic, (3) auto, medium truck (2–3 axle) and heavy truck percentage (4 axle and greater), and sound propagation. The greater the volume of traffic, higher speeds and truck percentages equate to a louder volume in noise. A doubling of the Average Daily Traffic (ADT) along a roadway will increase noise levels by approximately 3 dB; reasons for this are discussed in the sections above.

2.8 Sound Propagation

As sound propagates from a source it spreads geometrically. Sound from a small, localized source (i.e., a point source) radiates uniformly outward as it travels away from the source in a spherical pattern. The sound level attenuates at a rate of 6 dB per doubling of distance. The movement of vehicles down a roadway makes the source of the sound appear to propagate from a line (i.e., line source) rather than a point source. This line source results in the noise propagating from a roadway in a cylindrical


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spreading versus a spherical spreading that results from a point source. The sound level attenuates for a line source at a rate of 3 dB per doubling of distance.

As noise propagates from the source, it is affected by the ground and atmosphere. Noise models use hard site (reflective surfaces) and soft site (absorptive surfaces) to help calculate predicted noise levels. Hard site conditions assume no excessive ground absorption between the noise source and the receiver. Soft site conditions such as grass, soft dirt or landscaping attenuate noise at a rate of 1.5 dB per doubling of distance. When added to the geometric spreading, the excess ground attenuation results in an overall noise attenuation of 4.5 dB per doubling of distance for a line source and 7.5 dB per doubling of distance for a point source.

Research has demonstrated that atmospheric conditions can have a significant effect on noise levels when noise receivers are located 200 feet from a noise source. Wind, temperature, air humidity and turbulence can further impact have far sound can travel.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Ground-Bourne Vibration Fundamentals

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3.0 Ground-Bourne Vibration Fundamentals

3.1 Vibration Descriptors Ground-borne vibrations consist of rapidly fluctuating motions within the ground that have an average motion of zero. The effects of ground-borne vibrations typically only cause a nuisance to people, but at extreme vibration levels, damage to buildings may occur. Although ground-borne vibration can be felt outdoors, it is typically only an annoyance to people indoors where the associated effects of the shaking of a building can be notable. Ground-borne noise is an effect of ground-borne vibration and only exists indoors, since it is produced from noise radiated from the motion of the walls and floors of a room and may also consist of the rattling of windows or dishes on shelves.

Several different methods are used to quantify vibration amplitude.

PPV – Known as the peak particle velocity (PPV) which is the maximum instantaneous peak in vibration velocity, typically given in inches per second.

RMS – Known as root mean squared (RMS) can be used to denote vibration amplitude

VdB – A commonly used abbreviation to describe the vibration level (VdB) for a vibration source.

3.2 Vibration Perception Typically, developed areas are continuously affected by vibration velocities of 50 VdB or lower. These continuous vibrations are not noticeable to humans whose threshold of perception is around 65 VdB. Outdoor sources that may produce perceptible vibrations are usually caused by construction equipment, steel-wheeled trains, and traffic on rough roads, while smooth roads rarely produce perceptible ground-borne noise or vibration. To counter the effects of ground-borne vibration, the Federal Transit Administration (FTA) has published guidance relative to vibration impacts. According to the FTA, fragile buildings can be exposed to ground-borne vibration levels of 0.3 inches per second without experiencing structural damage.

3.3 Vibration Perception There are three main types of vibration propagation: surface, compression, and shear waves. Surface waves, or Rayleigh waves, travel along the ground’s surface. These waves carry most of their energy along an expanding circular wave front, similar to ripples produced by throwing a rock into a pool of water. P-waves, or compression waves, are body waves that carry their energy along an expanding spherical wave front. The particle motion in these waves is longitudinal (i.e., in a “push-pull” fashion). P-waves are analogous to airborne sound waves. S-waves, or shear waves, are also body waves that carry energy along an expanding spherical wave front. However, unlike P-waves, the particle motion is transverse, or side-to-side and perpendicular to the direction of propagation.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Ground-Bourne Vibration Fundamentals

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As vibration waves propagate from a source, the vibration energy decreases in a logarithmic nature and the vibration levels typically decrease by 6 VdB per doubling of the distance from the vibration source. As stated above, this drop-off rate can vary greatly depending on the soil but has been shown to be effective enough for screening purposes, in order to identify potential vibration impacts that may need to be studied through actual field tests.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Regulatory Setting

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4.0 Regulatory Setting

The proposed project is located in the City of Simi Valley and noise regulations are addressed through the efforts of various federal, state and local government agencies. The agencies responsible for regulating noise are discussed below.

4.1 Federal Regulations The adverse impact of noise was officially recognized by the federal government in the Noise Control Act of 1972, which serves three purposes:

x Publicize noise emission standards for interstate commerce x Assist state and local abatement efforts x Promote noise education and research

The Federal Office of Noise Abatement and Control (ONAC) originally was tasked with implementing the Noise Control Act. However, it was eventually eliminated leaving other federal agencies and committees to develop noise policies and programs. Some examples of these agencies are as follows: The Department of Transportation (DOT) assumed a significant role in noise control through its various agencies. The Federal Aviation Agency (FAA) is responsible to regulate noise from aircraft and airports. The Federal Highway Administration (FHWA) is responsible to regulate noise from the interstate highway system. The Occupational Safety and Health Administration (OSHA) is responsible for the prohibition of excessive noise exposure to workers.

The federal government advocates that local jurisdiction use their land use regulatory authority to arrange new development in such a way that “noise sensitive” uses are either prohibited from being constructed adjacent to a highway or, or alternatively that the developments are planned and constructed in such a manner that potential noise impacts are minimized.

Since the federal government has preempted the setting of standards for noise levels that can be emitted by the transportation source, the City is restricted to regulating the noise generated by the transportation system through nuisance abatement ordinances and land use planning.

4.2 State Regulations Established in 1973, the California Department of Health Services Office of Noise Control (ONC) was instrumental in developing regularity tools to control and abate noise for use by local agencies. One significant model is the “Land Use Compatibility for Community Noise Environments Matrix.” The matrix allows the local jurisdiction to clearly delineate compatibility of sensitive uses with various incremental levels of noise.

The State of California has established noise insulation standards as outlined in Title 24 and the Uniform Building Code (UBC) which in some cases requires acoustical analyses to outline exterior noise levels and to ensure interior noise levels do not exceed the interior threshold. The State mandates that the legislative body of each county and city adopt a noise element as part of its comprehensive general


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plan. The local noise element must recognize the land use compatibility guidelines published by the State Department of Health Services. The guidelines rank noise land use compatibility in terms of normally acceptable, conditionally acceptable, normally unacceptable, and clearly unacceptable as illustrated in Exhibit D.

Exhibit D: Land Use Compatibility Guidelines

4.3 City of Simi Valley Noise Regulations The City of Simi Valley outlines their noise regulations and standards within the Noise Element from the General Plan and the Noise Ordinance from the Municipal Code.


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City of Simi Valley General Plan

Applicable policies and standards governing environmental noise in the City are set forth in the General Plan Noise Element. Those applicable to the proposed project are presented below:

Goals, Policies, and Implementation Measures

Policies and goals from the Safety and Noise Chapter that would mitigate potential impacts on noise include the following. All General Plan policies are followed by a set of numbers in parentheses. These numbers reference applicable measures that will be undertaken by the City to implement the policy.

Goal N-1 Land Use Compatibility. Land use conflicts between various noise sources and other human activities are minimized.

N-1.1 Noise Standards. Require noise attenuation for all development where the projected exterior and interior noise levels exceed those shown in Table N-1 (Interior and Exterior Noise Standards), to the extent feasible. (Imp A-1, A-2, LU-18, N-1)

N-1.4 Noise Attenuation Measures. Ensure that all new development provides adequate sound insulation or other protection from existing and anticipated noise sources. (Imp A-1, A-2, LU-18, N-2)

N-1.5 Sensitive Receptors. Incorporate ambient noise level considerations into land use decisions involving schools, hospitals, and similar noise-sensitive uses. (Imp A-1, A-2, LU-18, N-2)

Goal N-2 Sensitive Receptors. Motor vehicle traffic and railroad noise impacts on sensitive noise receptors are minimized.

N-2.1 State Motor Vehicle Noise Standards. Encourage the enforcement of state motor vehicle noise standards for cars, trucks, and motorcycles through coordination with the California Highway Patrol and Simi Valley Police Department. (Imp A-1, A-2, LU-18, N-3)

N-2.2 Roadway Noise Sensitivity Measures. Ensure the employment of noise attenuation measures in the design of roadway improvement projects consistent with funding capability. Support efforts by the California Department of Transportation and


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others to provide for acoustical protection of existing noise-sensitive land uses affected by these projects. (Imp A-1, A-2, LU-18, N-3)

N-2.3 Noise Attenuation along Major Arterials and Railroad Tracks. Require the use of walls and berms in the design of residential and other noise-sensitive land uses that are adjacent to the 118 Freeway, major arterials, and railroad tracks. (Imp A-1, A-2, LU-18, N-1)

N-2.4 Noise Studies for New Development. Require the preparation of noise studies, as deemed necessary by the Department of Environmental Services, for new development (especially residential projects) along the freeway corridor, major thoroughfares, and railroad tracks to ensure that adequate sound attenuation from these noise sources is provided. (Imp A-1, A-2, LU-18, N-2)

Goal N-3 Stationary Noise. Nontransportation-related noise impacts on sensitive receptors are minimized.

N-3.1 Protection from Stationary Noise Sources. Continue to enforce interior and exterior noise standards to ensure that sensitive noise receptors are not exposed to excessive noise levels from stationary noise sources, such as machinery, equipment, fans, and air conditioning equipment. (Imp A-1, A-2, LU-12, LU-18)

N-3.2 Regulation of Sound-Amplifying Equipment. Continue to regulate the use of sound-amplifying equipment. (Imp A-1, A-2, LU-18, N-1)

N-3.3 Enforcement of Hours of Construction Activity. Continue to enforce restrictions on hours of construction activity so as to minimize the impacts of noise and vibration from the use of trucks, heavy drilling equipment, and other heavy machinery to adjacent uses, particularly in residential areas. (Imp A-1, A-2, LU-18, N-1)

Construction Noise Regulations

Section 5-16.02(d) of the Municipal Code declares that the operation of engines, motors, and mechanical devices in and near residential districts between the hours of 11:00 PM and 7:00 AM on Friday or Saturday and between the hours of 10:00 PM and 7:00 AM on Sunday through Thursday, unless such device is enclosed within a sound-insulated structure so as to prevent noise and sounds from being plainly audible at a distance of 50 feet from such structure or within 10 feet of any residence, is a nuisance punishable by misdemeanor.

Section 5-16.02(h) of the Municipal Code declares that the operation of any pile driver, steam shovel, pneumatic hammer, derrick, hoist, or other appliance that generates a loud or unusual noise between the hours of 7:00 PM and 7:00 AM is a nuisance punishable by misdemeanor.


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Section 5-16.02(i) of the Municipal Code declares that the erection, excavation, demolition, alteration, construction, or repair of any structure or building, other than between the hours of 7:00 AM and 7:00 PM, is a nuisance punishable by misdemeanor.

Vibration

The City does not have a specific vibration threshold however typically vibration that is created during temporary construction is permitted; otherwise, any use that generates perceptible vibration is not permitted without instrumentation.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Study Method and Procedure

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5.0 Study Method and Procedure

The following section describes the noise modeling procedures and assumptions used for this assessment.

5.1 Noise Measurement Procedure and Criteria Noise measurements are taken to determine the existing noise levels. A noise receiver or receptor is any location in the noise analysis in which noise might produce an impact. The following criteria are used to select measurement locations and receptors:

x Locations expected to receive the highest noise impacts, such as first row of houses x Locations that are acoustically representative and equivalent of the area of concern x Human land usage x Sites clear of major obstruction and contamination

MD conducted the sound level measurements in accordance to CalTrans technical noise specifications. All measurements equipment meets American National Standards Institute (ANSI) specifications for sound level meters (S1.4-1983 identified in Chapter 19.68.020.AA). The following gives a brief description of the Caltrans Technical Noise Supplement procedures for sound level measurements:

x Microphones for sound level meters were placed 5-feet above the ground for all measurements x Sound level meters were calibrated (Larson Davis CAL 200) before and after each measurement x Following the calibration of equipment, a wind screen was placed over the microphone x Frequency weighting was set on “A” and slow response x Results of the long-term noise measurements were recorded on field data sheets x During any short-term noise measurements any noise contaminations such as barking dogs, local

traffic, lawn mowers, or aircraft fly-overs were noted x Temperature and sky conditions were observed and documented

5.2 Long-Term Noise Measurement Locations Noise monitoring locations were selected based on the relative location of on-site sensitive receptors from the subject roadways. One (1) 24-hour long-term noise measurement was conducted near the western property line and is illustrated in Exhibit E. Appendix A includes photos, field sheet, and measured noise data.


Exhibit E

Measurement Locations

16

SITE

1 = Long-termMonitoring Location

Study Method and Procedure

1

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Study Method and Procedure

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5.3 Traffic Noise Modeling SoundPLAN (SP) acoustical modeling software was utilized to model future worst‐case traffic noise impacts to the on‐site sensitive uses. SP is capable of evaluating traffic noise and multiple stationary noise source impacts at various receiver locations. SP’s software utilizes algorithms (based on the inverse square law and roadway parameters) to calculate noise level projections. The software allows the user to input specific noise sources, spectral content, sound barriers, building placement, topography, and sensitive receptor locations.

Roadway parameters inputted into the model include project location, traffic volume, speed and vehicle mix (auto, medium truck and heavy truck). It is important to evaluate potential impacts of the nosiest possible future condition. These conditions occur when the maximum amount of vehicles pass at the greatest speed. This scenario usually corresponds to Level of Service C (LOS C) conditions, or about 75% of buildout capacity. MD utilized LOS C traffic data from the circulation element for Los Angeles Avenue. According to the circulation element, Los Angeles Avenue is a primary arterial roadway with an LOS C of 50,500 ADT. Typical southern California day/evening/night vehicle mixes was inputted into the model. Modeling input and output assumptions are indicated in Appendix B.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Existing Noise Environment

18

6.0 Existing Noise Environment

An ambient noise measurement was conducted at along the western property line of the project site. Noise measurements are taken to determine the existing ambient noise levels at the project site. Noise measurement data indicates that traffic noise propagating from Los Angeles Avenue is the primary source of noise impacting the project site.

6.1 Long-Term Noise Measurement Results The results of the short-term noise data is presented in Table 1.

Table 1: Long-term Noise Measurement Data (dBA)1

Date Time Leq Lmax Lmin L(2) L(8) L(25) L(50) 3/28/2016 12PM – 1PM 57.9 72.7 49.1 63.2 60.8 58.8 56.7

3/28/2016 1PM – 2PM 62.4 88.1 50.5 65.5 61.2 59.0 57.1

3/28/2016 2PM – 3PM 66.6 91.0 50.5 72.9 61.8 59.4 57.7

3/28/2016 3PM – 4 PM 68.3 94.3 52.4 68.3 63.3 61.2 59.6

3/28/2016 4PM – 5PM 59.5 71.5 51.7 63.7 62.2 60.3 58.7

3/28/2016 5PM – 6PM 58.1 73.4 49.8 62.4 61.0 59.3 57.2

3/28/2016 6PM – 7PM 55.6 66.8 45.4 60.6 59.0 57.0 54.5

3/28/2016 7PM – 8 PM 54.5 75.5 39.1 60.4 58.3 55.5 52.0

3/28/2016 8PM – 9PM 53.6 67.8 38.5 59.9 57.8 55.0 51.1

3/28/2016 9PM – 10PM 51.2 69.0 35.6 58.5 56.0 52.0 47.3

3/28/2016 10PM – 11PM 48.7 65.8 31.9 57.1 53.7 49.0 42.7

3/28/2016 11PM – 12AM 46.2 61.7 30.1 55.8 51.6 44.4 37.7

3/29/2016 12AM – 1AM 47.5 73.3 30.5 56.6 50.0 40.7 36.2

3/29/2016 1AM – 2AM 43.9 65.4 31.6 53.1 48.2 40.9 35.6

3/29/2016 2AM – 3AM 44.6 62.7 33.1 54.2 48.0 41.1 39.0

3/29/2016 3AM – 4AM 47.3 63.3 39.7 56.8 52.4 44.6 41.5

3/29/2016 4AM – 5AM 53.0 66.6 44.2 60.5 57.8 53.7 49.5

3/29/2016 5AM – 6AM 58.4 84.1 47.4 62.9 60.2 57.5 54.7

3/29/2016 6AM – 7AM 57.9 77.0 44.3 63.1 61.3 58.9 56.2

3/29/2016 7AM – 8AM 57.7 74.1 42.0 63.3 61.2 58.7 55.9

3/29/2016 8AM – 9AM 60.4 88.5 43.2 62.6 60.1 57.5 54.7

3/29/2016 9AM – 10AM 56.0 75.0 44.4 61.5 59.4 57.0 54.2

3/29/2016 10AM -11AM 56.0 70.0 47.2 61.3 59.3 57.1 54.7

3/29/2016 11AM – 12PM 57.2 75.6 57.6 62.2 60.0 57.9 55.9

CNEL 62.1 Notes:

1. Measurements were taken over a 1hour intervals for a 24-hour period. Measurement locations are indicated in Exhibit E.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Existing Noise Environment

19

Noise data indicates the ambient noise level was hourly noise levels range between 43.9 to 68.3 dBA Leq. The measured CNEL was 62.1 dBA which is below the City’s 63 dBA CNEL exterior limit. The measured noise level and field notes indicate that traffic noise is the main source of noise impacting the project site and surrounding area.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Future Noise Environment Impacts and Mitigation

20

7.0 Future Noise Environment Impacts and Mitigation

This assessment analyzes future noise impacts as a result of the project and compares the results to the City’s Noise Standards. Traffic noise impacts are analyzed from the adjacent subject roadways. The analysis details the estimated exterior noise levels.

7.1 Future Exterior Noise The following outlines the exterior noise levels associated with the proposed project.

7.1.1 Traffic Source Noise On-site sensitive receptors that may be affected by potential traffic noise include outdoor useable areas (e.g. patios) were modeled using SoundPLAN acoustical modeling software.

A total of one (1) building receptor and three (3) outdoor sensitive receptors were modeled to accurately evaluate the future on-site noise impact. A receptor is denoted by either a green or yellow dot. All yellow dots represent either a property line or a sensitive receptor such as an outdoor sensitive area (e.g. courtyard, patio, backyard, etc).

Exhibit F shows the future unmitigated noise levels at the sensitive receptors. Future noise levels are expected to range from 42.7 to 68.0 dBA CNEL at the project site. The noise level projections will not exceed the City’s 63 dBA CNEL noise standard at the outdoor useable areas and therefore the impact is less than significant. No additional exterior noise mitigation measures are required.

Exhibit G illustrates the noise contours at the project site and illustrates how the noise will propagate at the site.

7.2 Future Interior Noise The future interior noise level was calculated for the sensitive receptor locations using a typical “windows open” and “windows closed” condition. A “windows open” condition assumes 12 dBA of noise attenuation from the exterior noise level. A “windows closed” condition” assumes 20 dBA of noise attenuation from the exterior noise level. Assuming a “windows closed” condition the interior noise level will range between 22.7 to 48.0 dBA CNEL. To meet the City’s interior 45 dBA CNEL standard, a “windows closed” condition and upgraded windows (STC > 27) is required for all 1st row units (floors 1 through 3) directly facing Los Angeles Avenue. With the implementation of the mitigation measures (outlined in Section 7.3) the project will comply with the City’s 45 dBA CNEL interior noise standard and therefore the impact is considered less than significant with mitigation.

7.3 Summary of Noise Reduction Measures x 1st, 2nd, 3rd Floors – 1st Row Residential Units Directly Facing Los Angeles Avenue

The results of the interior analysis indicate that all 1st, 2nd, and 3rd floor windows directly facing Los Angeles Avenue will require a minimum STC rating of 27 or greater.


Exhibit F

Future Noise Level Projections

21

Future Noise Environment Impacts and Mitigation

First Row Units Facing Subject Roadway

• All 1st, 2nd and 3rd floor windows directly facing subject roadway require a minimum STC rating of 27 or higher.


Exhibit G

Future Noise Level Contours

22

Future Noise Environment Impacts and Mitigation

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Construction Noise Impact

23

8.0 Construction Noise Impact

The degree of construction noise may vary for different areas of the project site and also vary depending on the construction activities. Noise levels associated with the construction will vary with the different phases of construction.

8.1 Construction Noise The Environmental Protection Agency (EPA) has compiled data regarding the noise generated characteristics of typical construction activities. The data is presented in Table 2.

Table 2: Typical Construction Noise Levels1

Equipment Powered by Internal Combustion Engines Type Noise Levels (dBA) at 50 Feet

Earth Moving Compactors (Rollers) 73 - 76 Front Loaders 73 - 84 Backhoes 73 - 92 Tractors 75 - 95 Scrapers, Graders 78 - 92 Pavers 85 - 87 Trucks 81 - 94

Materials Handling Concrete Mixers 72 - 87 Concrete Pumps 81 - 83 Cranes (Movable) 72 - 86 Cranes (Derrick) 85 - 87

Stationary Pumps 68 - 71 Generators 71 - 83 Compressors 75 - 86

Impact Equipment Type Noise Levels (dBA) at 50 Feet

Saws 71 - 82 Vibrators 68 - 82 Notes: 1 Referenced Noise Levels from the Environmental Protection Agency (EPA)

Construction noise is considered a short-term impact and would be considered significant if construction activities are taken outside the allowable times as described in the City’s Municipal Code (Section 5-16.02).

Construction is anticipated to occur during the permissible hours according the City’s Municipal Code. Construction noise will have a temporary or periodic increase in the ambient noise level above the existing within the project vicinity. Furthermore, noise reduction measures are provided to further reduce construction noise (Section 8.3). The impact is considered less than significant.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA Construction Noise Impact

24

8.2 Construction Vibration Construction activities can produce vibration that may be felt by adjacent land uses. The construction of the proposed project would not require the use of equipment such as pile drivers, which are known to generate substantial construction vibration levels. The primary vibration source during construction may be from a bull dozer. A small bull dozer has a vibration impact of 0.003 inches per second peak particle velocity (PPV) at 25 feet, which is below the barely perceptible threshold. The distance of the construction equipment will be further than 25 feet from any existing sensitive building and therefore the impact would be less than significant.

8.3 Construction Noise Reduction Measures Construction operations must follow the City’s General Plan and the Noise Ordinance, which states that construction, repair or excavation work performed must occur within the permissible hours. To further ensure that construction activities do not disrupt the adjacent land uses, the following measures should be taken:

1. Construction should occur during the permissible hours as defined in Section 5-16.02.

2. During construction, the contactor shall ensure all construction equipment is equipped with appropriate noise attenuating devices.

3. The contractor should locate equipment staging areas that will create the greatest distance between construction-related noise/vibration sources and sensitive receptors nearest the project site during all project construction.

4. Idling equipment should be turned off when not in use.

5. Equipment shall be maintained so that vehicles and their loads are secured from rattling and banging.

Meridian Assisted Living/Memory Care Noise Impact Study City of Simi Valley, CA References

25

9.0 References

State of California General Plan Guidelines: 1998. Governor’s Office of Planning and Research

City of Simi Valley: Noise Element, 2012.

City of Simi Valley: City of Simi Valley Noise Ordinance. March, 2016.

Appendix A: Photographs and Field Measurement Data

NOTES:

DATE STARTTIME

STOPTIME

LEQ LMAX LMIN L02 L08 L25 L50 L90 L99

3/28/2016 12:00:00 PM N/A 57.9 72.7 49.1 63.2 60.8 58.8 56.7 53.0 50.7

3/28/2016 1:00:00 PM N/A 62.4 88.1 50.5 65.5 61.2 59.0 57.1 53.3 51.5

3/28/2016 2:00:00 PM N/A 66.6 91.0 50.5 72.9 61.8 59.4 57.7 54.3 52.3

3/28/2016 3:00:00 PM N/A 68.3 94.3 52.4 68.3 63.3 61.2 59.6 56.6 54.1

3/28/2016 4:00:00 PM N/A 59.5 71.5 51.7 63.7 62.2 60.3 58.7 55.6 53.3

3/28/2016 5:00:00 PM N/A 58.1 73.4 49.8 62.4 61.0 59.3 57.2 53.5 50.9

3/28/2016 6:00:00 PM N/A 55.6 66.8 45.4 60.6 59.0 57.0 54.5 49.6 46.4

3/28/2016 7:00:00 PM N/A 54.5 75.5 39.1 60.4 58.3 55.5 52.0 44.4 40.2

3/28/2016 8:00:00 PM N/A 53.6 67.8 38.5 59.9 57.8 55.0 51.1 43.2 40.6

3/28/2016 9:00:00 PM N/A 51.2 69.0 35.6 58.5 56.0 52.0 47.3 40.1 37.1

3/28/2016 10:00:00 PM N/A 48.7 65.8 31.9 57.1 53.7 49.0 42.7 35.6 33.2

3/28/2016 11:00:00 PM N/A 46.2 61.7 30.1 55.8 51.6 44.4 37.7 33.0 30.7

3/29/2016 12:00:00 AM N/A 47.5 73.3 30.5 56.6 50.0 40.7 36.2 32.4 31.1

3/29/2016 1:00:00 AM N/A 43.9 65.4 31.6 53.1 48.2 40.9 35.6 32.3 31.1

3/29/2016 2:00:00 AM N/A 44.6 62.7 33.1 54.2 48.0 41.1 39.0 34.6 32.5

3/29/2016 3:00:00 AM N/A 47.3 63.3 39.7 56.8 52.4 44.6 41.5 36.9 34.3

3/29/2016 4:00:00 AM N/A 53.0 66.6 44.2 60.5 57.8 53.7 49.5 43.3 40.7

3/29/2016 5:00:00 AM N/A 58.4 84.1 47.4 62.9 60.2 57.5 54.7 49.3 45.3

3/29/2016 6:00:00 AM N/A 57.9 77.0 44.3 63.1 61.3 58.9 56.2 51.1 48.7

3/29/2016 7:00:00 AM N/A 57.7 74.1 42.0 63.3 61.2 58.7 55.9 49.3 45.8

3/29/2016 8:00:00 AM N/A 60.4 88.5 43.2 62.6 60.1 57.5 54.7 48.4 44.4

3/29/2016 9:00:00 AM N/A 56.0 75.0 44.4 61.5 59.4 57.0 54.2 48.5 45.5

3/29/2016 10:00:00 AM N/A 56.0 70.0 47.2 61.3 59.3 57.1 54.7 49.6 46.5

3/29/2016 11:00:00 AM 12:00:00 PM 57.2 75.6 57.6 62.2 60.0 57.9 55.9 51.7 48.9

CNEL 62.1

EASTERN P/L AND SET TO RECORD FOR 24-HOURS.

Meter was placed at east property line near the middle and secured to a tree. Meter had direct line of sight to the Los Angeles Ave.

MEAS. TYPE:

x Long Term o Short Term

SERIAL #: N/A

CALIBRATION RECORD: Freq, Hz.p 250 1000

CALIBRATOR:

NOTES:

NOISE METER WAS PLACED NEAR CENTER OF THE

Input, dB / Reading, dB / Offset,mV / Time

Before __114.0_ /__114.0_____/__21.6 __/__2:50 AM__

After __114.0_/__114.0 ____/__21.6___/__4:00 PM__

FIELD SHEET - LT1

METER SETTINGS: A-WTD LINEAR SLOW 1/1 OCT INTERVALS 1 HOUR C-WTD p IMPULSE FAST 1/3 OCT LN PERCENTILE VALUES

ENGINEER: Mike Dickerson DATE:3/29/2016

PROJECT: Meridian Assisted Living/Memory Care Noise Impact Study

SITE NO.: 1

MEASUREMENT ADDRESS: Center of Eastern Property Line

CITY:Simi Valley, CA

LD CAL200 ☐ ________ S/N _9644_____

SOUND LEVEL METER: p LD-824 LD-831 p NTI-XL2 p ________

MICROPHONE: WIND SCREEN ☐NON-POLAR POLARIZED 1/2-INCH FREE FIELD ☐ 1-INCH ☐ RANDOM

PRE AMP: LD-PRM 831 p M2210 p Other

NOTES:

SYSTEM PWR: BAT ☐ AC

(observations at start of measurement)

TEMP: _62__ ºF R.H.: _____ %

WIND SPEED: __1___MPH

TOWARD (DIR): ___W_________

SKIES: ___CLEAR______________

CAMERA ______SAMSUNG________

PHOTO NOs. _______4 ____________

SERIAL #: 3168 SERIAL #: 2350

CountsAT MT HT

Dist. to Centerline Video Radar

p Single-Familyp Multi-Family

p Recreational Commercial

FIELD SHEET - LT1 PHOTOS PROJECT: Meridian Assisted Living/Memory Care Noise Impact Study ENGINEER: Mike Dickerson DATE:

3/29/2016

MEASUREMENT ADDRESS: Center of Eastern Property Line

CITY:Simi Valley, CA

SITE NO.: 1

= Long-term Noise Monitoring Location

Single-Family Multi-Family

Recreational Commercial

Single-Family Multi-Family

Recreational Commercial

p Single-Familyp Multi-Family

p Recreational Commercial

LT1

= Project Boundary

Looking South - Towards LA Avenue

LT1

Site LT01 Hourly Noise Levels, Leq(h)Notes: Noise levels over a 24 hour period.

Location: Meridian Assisted Living/Memory Care east property line

Position: Noise meter was placed at center of eastern property line, 5ft above ground level.Sources: Los Angeles Avenue and fence repairDate: 3/28/2016 - 3/29/2016 See attached Noise Measurement Form.

TIME11:00 - 12:00 PM 5812:00 - 01:00 PM 6201:00 - 02:00 PM 6702:00 - 03:00 PM 6803:00 - 04:00 PM 5904:00 - 05:00 PM 5805:00 - 06:00 PM 5606:00 - 07:00 PM 5407:00 - 08:00 PM 5408:00 - 09:00 PM 5109:00 - 10:00 PM 4910:00 - 11:00 PM 4611:00 - 12:00 AM 4712:00 - 01:00 AM 4401:00 - 02:00 AM 4502:00 - 03:00 AM 4703:00 - 04:00 AM 5304:00 - 05:00 AM 5805:00 - 06:00 AM 5806:00 - 07:00 AM 5807:00 - 08:00 AM 6008:00 - 09:00 AM 5609:00 - 10:00 AM 5610:00 - 11:00 AM 57

CNEL = 62.1

Leq(h)

dBA

3/28/2016 - 3/29/2016

40

45

50

55

60

65

70

75

12

:00

PM

1:0

0 P

M

2:0

0 P

M

3:0

0 P

M

4:0

0 P

M

5:0

0 P

M

6:0

0 P

M

7:0

0 P

M

8:0

0 P

M

9:0

0 P

M

10

:00

PM

11

:00

PM

12

:00

AM

1:0

0 A

M

2:0

0 A

M

3:0

0 A

M

4:0

0 A

M

5:0

0 A

M

6:0

0 A

M

7:0

0 A

M

8:0

0 A

M

9:0

0 A

M

10

:00

AM

11

:00

AM

12

:00

PM

Leq,

dBA

Time

Appendix B: SoundPLAN Input/Outputs

Traffic values Control ConstrAffect. GradienStation ADT Vehicles type Vehicle name day evenin night Speed device Speed veh. Road surface Min / M

km Veh/24 Veh/h Veh/h Veh/h km/h km/h % %Los Angeles Ave WB Traffic direction: In entry direction

0+000 24589TotalAutomobilesMedium trucksHeavy trucksBusesMotorcyclesAuxiliary Vehicle

-------

15821548

331---

10661058

80---

268262

50---

-727272---

none - - Average (of DGAC and PCC) 0.0

0+238 - - - - - -Los Angeles Ave EB Traffic direction: In entry direction0+000 24589Total

AutomobilesMedium trucksHeavy trucksBusesMotorcyclesAuxiliary Vehicle

-------

15821548

331---

10661058

80---

268262

50---

-727272---

none - - Average (of DGAC and PCC) 0.0

0+239 - - - - - -

Noise Emissions of Road Traffic

MD Acoustics 4960 S. Gilbert Rd, Suite 1-461 Chandler, AZ 85249 USA

LevelSource name Lane Lden

dB(A)1 1.Fl 66.4

Los Angeles Ave EB 60.8Los Angeles Ave WB 65.01 2.Fl 67.8

Los Angeles Ave EB 62.8Los Angeles Ave WB 66.21 3.Fl 68.0Los Angeles Ave EB 63.3Los Angeles Ave WB 66.32 1.Fl 42.7Los Angeles Ave EB 39.0Los Angeles Ave WB 40.32 2.Fl 47.8



Los Angeles Ave EB 52.7Los Angeles Ave WB 54.24 3.Fl 56.6Los Angeles Ave EB 52.8Los Angeles Ave WB 54.2

Contribution Levels of the Receivers

MD Acoustics 4960 S. Gilbert Rd, Suite 1-461 Chandler, AZ 85249 USA

AZ Office CA Office 4960 S. Gilbert Rd, Suite 1-461 1197 Los Angeles Ave, Suite C-256 Chandler, AZ 85249 Simi Valley, CA 93065 p. (602) 774-1950 p. (805) 426-4477

www.mdacoustics.com

MD Acoustics 1 JN: 01761701_Memo#1

May 2, 2017

Mr. Ron Cibulka Meridian Realty Advisors 3811 Turtle Creek Blvd, Ste 1050 Dallas, TX 93065

Subject: Meridian Assisted Living/Memory Care – Noise Impact Study – Memorandum #1 Dear Mr. Cibulka MD Acoustics (MD) completed a noise impact study (dated 3/29/2016) for the proposed Meridian Assisted Living/Memory Care Project located 525 E Los Angeles Avenue, in the City of Simi Valley, California. That study assessed the noise impacts based on the proposed site plan, topography, grade, traffic noise and site finishes (hard vs. soft). Since the completion of that study it has come to MD’s attention that there is concern about the potential noise from an adjacent mechanic shop to the west of the property that may have pneumatic tools.

MD has calculated the noise impacts from the adjacent shop assuming up to two (2) pneumatic screw guns are in operation at the same time. The modeling takes into account the elevation difference and the proposed 6-foot wall along the property line. Appendix A and B contains the noise level map and noise contour map, respectively. This scenario was calculated to demonstrate the mechanic shop’s operational noise level and to compare to measured ambient condition (see Noise Impact Study, 3/29/2016). The projected noise level is anticipated to range between 52.0 to 58.0 dBA at the eastern facade of the project site’s building when the mechanic shop is operation. According to the baseline measurement conditions, the project site currently experiences levels ranging between 54.5 to 66.6 dBA (during 7AM to 7PM) from existing traffic conditions. When comparing the baseline condition to the mechanic shop’s projected noise level, the mechanic shop is calculated to be approximately 2.0 to 8.0 dBA quieter than the baseline condition. The impact is less than significant and does not exceed the City’s 10 dBA above the ambient condition. MD is pleased to provide this memo for the Meridian Assisted Living/Memory Care – Noise Impact Study. If you have any questions regarding this letter please call our office at (805) 426-4477.

Sincerely, MD Acoustics

Mike Dickerson, INCE Principal

EXHIBIT 2

MD Acoustics JN: 01761701_Memo#1

Appendix A Noise Level Map

Meridian Assisted Living/Memory CareNoise Impact Study – Memo#1City of Simi Valley, CA

Appendix A

Adjacent Mechanic Shop Operational Noise Levels

MD Acoustics JN: 01761701_Memo#1

Appendix B Noise Contour Map

Appendix B

Adjacent Mechanic Shop Operational Noise Level Contours

Meridian Assisted Living/Memory CareNoise Impact Study – Memo#1City of Simi Valley, CA

city of simi valley memorandum

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