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Item 4C - Noise Mitigation PlanNOISE CONTROL - CANINE BEHAVIOR NOISE CONTROL PLAN Prepared By: Aaron Mueller, LEED AP BD+C Director of Design and Construction April 2018 -NOTICE- Trusted Authority, LLC DBA Dogtopia, LLC hereby claims any and all Trademark rights under 15 U.S.C. 1125 of the Lanham Act to the following materials. Any of the disclosed Dogtopia franchise color schemes, design features, design layouts, and other non-functional aspects of the disclosed franchise materials that distinguish the Dogtopia franchise are further protected under relevant Trade Dress Law. Any unauthorized copying of the various Dogtopia franchise color schemes, design features, design layouts, and other non-functional aspects of the Dogtopia franchise is strictly prohibited. Trusted Authority, LLC DBA Dogtopia, LLC further claims copyright to any and all original works of Authorship of the following materials as defined by the Copyright Act of 1976 as amended. All copyright rights are reserved. Table of Contents 1. Introduction 2. Wall Construction 2.1. Dog Spaces 2.2. People Spaces 2.3. Exterior Walls 3. Ceiling Construction 4. Wall Sound Control Diagram B dogtopia. 1. Introduction No two Dogtopia footprints are the same and each require a unique design that is engineered around its environment. Noise control is one of the primary focuses when programming a space. With more than 15 years of experience in the dog daycare industry, Dogtopia has refined the design to provide maximum sound containment, utilizing standard construction materials and practices. Analysis of the existing structure, neighboring tenants as well as their locations, are all taken into consideration during the design process to provide a dog daycare that is welcome in any environment. This document provides details on the strategy and materials used when constructing a new daycare. 2. Wall Categories Walls are broken down into three categories (Dog Space, People Space, and Exterior Walls) based on how critical sound mitigation is for that particular wall assembly in the daycare. Dog Space are the areas in which dogs will be kept for any period of time and barking may occur. People space is the areas in the daycare that isn't Dog Space (e.g. restrooms, breakroom, reception, etc.). Exterior Walls are considered the perimeter walls of the daycare including walls abutting adjacent building tenants. 2.1. Dog Space Dog Space typically consist of the playrooms, utility rooms, evaluation rooms, spa & grooming, and suites. Dogtopia's standard design for walls around the Dog Space at the interior of the daycare are 6" thick, fully insulated, full -height, metal stud walls with type X-5/8" gypsum board on each side. The wall is full -height in that it spans from the floor to the roof deck (not just above the ceiling) and is filled with acoustical insulation. This wall is continuous and prevents any substantial amount of sound or smell from escaping the Dog Space. Any windows in this wall assembly are frameless preventing the transfer of sound. 2.2. People Space People Space typically consist of restrooms, reception, hallways, office, laundry/storage, and a breakroom. Sound coming from these areas is minimal and designed with a standard 3 5/8" metal stud wall that spans from the floor to 6" above the suspended ceiling, with type X-5/8" gypsum board on each side. This wall type is insulated only when surrounding the office or restrooms. The wall type may also be used within the Dog Space as sound transmission within the Dog Space isn't of concern. 2.3. Exterior Walls Dogtopia utilizes two approaches when designing exterior wall assemblies depending on what the wall is separating the daycare from. When Dog Space is abutting a neighboring tenant, a two -wall system with an air gap is applied. Typically, an insulated demising wall of 3 5/8" or wider that spans from the floor to roof deck between the Better Tcge, tier, LLG Real, Eyl Perw_b t� D ©2019 daycare and neighboring tenant exists. If there is no existing demising wall, one is constructed. One inch from the new/existing demising wall an additional wall is constructed on the daycare side. This additional wall is a 6", fully insulated, full -height metal stud wall with two sheets of type X-5/8" gypsum board on the daycare side. Acoustical sealant is provided at the perimeter of the wall and any penetrations. This assembly provides an STC rating of —70 depending on the construction of the existing demising wall. This assembly may also be utilized when sound mitigation to the building exterior is critical. Daycares located near residential neighborhoods may utilize this system to prevent any disruption to residents surrounding the location. If an Exterior Wall separates People Space from the exterior, whether it divides a neighboring tenant or at the exterior of the building, the existing construction/wall assembly may be utilized. The noise generated in this area will rarely be from dogs and does not require sound attenuation. The air gap/space between the wall prevents sound transmission. So, as long as the Dog Space has the 6" wall assembly between the demising wall and Dog Space and is at least 1" away from the demising wall, existing assemblies will typically suffice. 3. Ceiling Construction Dogtopia's standard ceiling is a suspended ceiling system fitted with School Zone® lay in acoustical tiles used to absorb and prevent sound from escaping the room(s). The tiles have a noise reduction coefficient of .70 and a ceiling attenuation class of up to 40. These tiles are often used in schools and libraries where sound absorption and reduction are critical. The suspended ceiling is consistent throughout the daycare and typically no higher than 12'. Above the suspend ceiling is the existing building roof system and typically an R-30 insulation. 4. Wall Sound Control Diagram • Special wall type at demising wall(s) that extend to the roof deck • Special wall type between playrooms and people space that extend to the roof deck • Air gap at the demising wall Type A: Walls for bathrooms, dog food prep areas, etc. (non -dog rooms) Type B: Walls between the dog playrooms Type C: Demising walls (adjacent/shared wall with neighboring tenant(s)) Type D: Wall between playroom and people spaces (hallways, restrooms, spa/grooming, etc.) Extends to roof deck 3 5;!9' 20GA (METAL STUDS '-W W A.G. EXISTING CONSTRUCTION 5f8' TYPE x GYPSUM BOARD SEE PARTITION FINISH PLAN I=UH WALL FINISH R-1S GATT INSULATION f 1' AIR GAP 6' 200A METAL STIR @ W O.C. 5fiB' TYPE k GYPSUM BOARD BOTH SIDES SEE PARTITION & FINISH PLAN FOR WALL FINISH BATT INSULATION 3 SvIr 2 METAL - STUDS CW 16' 0.0. 5W TYPE x GYPSUM BOARD BOTH SIDES SEE PARTITION � FINISH FLAN FOR WAL I FINISH BATT INSULATION 3 518' 2UGA METAL STUDS 0 16' O.C. W TYPE X GYPSUM 130A.RD BOTH SIDES SEE PARTITION & FINISH PLAN FOR WALL FINISH 0 Noise Impact Study for Dogtopia—Phoenix (McDowell Road) Executive Summa An on -site noise impact study for the proposed Dogtopia doggie daycare and boarding commercial space located within the building at 502 West MacDowell Road in Phoenix, Arizona as part of the Zoning Adjustment (case # ZA-404-19). The purpose of this study is to quantify the potential noise impact from overnight boarded dogs to the residential community to the north of the building. Dogtopia will not have any outdoor run area and all boarded animals will be located in the south facing playrooms during overnight hours. This noise impact study evaluated the sound emission through the shell building envelope to the north fa- gade, west fagade and door, and through the rooftop and air handling units, the reduction of sound due to distance from the building envelope to the north shared property line, and the evaluated the potential sound level of dogs compared to the quietest nighttime hour at the north residential property line. Results The predicted instantaneous maximum sound from approximately 40 dogs barking is 17 dBA less than the quietest nighttime hour at this location and no frequency band is within 15 dB of that ambient noise levels during the quietest nighttime hour. In addition the 1 sec instantaneous maximum sound from the dogs barking was compared to the quietest 1 second on the property at 2:00 AM, and if those two events happen at the same time the dogs barking would be 30% qui- eter than the traffic noise during the single second. The predicted instantaneous maximum sound from 40 dogs barking compared to the quietest hour and quietest 1 second is shown below. Based on our on -site assessment, analysis, and calculations there is no risk of dogs within Dogtopia being a noise impact to the north residences and the predicted instantaneous maximum sound level of 33 dBA is more than 20 dB (75%) quieter than the City of Phoenix 55 dBA allowance noted in Section 1204—Environmental Quali- ty (6). n 6 40 i� 30 0- 20 Comparison of Quietest Nighttime Hour to Predicted Dogtopia Noise Impact (Frequency & Amplitude) A] co 10 0 u� 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 dBA One -Third Octave Band Frequency, Hz ■Quietest 1-sec Overnight ■Quietest Nighttime Hour ■ Predicted Dogtopia Nighttime Noise Bmpact West Door to Parking North Parking Lot Shell Interior (unfinished) looking northeast Noise Impact Analysis and Conclusions Entrance MN PARKING L02 w. McDCOML ST N. STH AVE. The noise impact analysis predicts the worst case scenario for nighttime barking to be the sound level measured from 10 to 15 medium to large dogs barking concurrently measured during a daytime play session at a similar Dogtopia in July 2019. The sound level was measured to be 95 dBA for 30 second average (Leq) and 102 dBA instantaneous maximum (Lmax). For this analysis the instantaneous maximum of 109 dBA was used to represent the absolute worst -case scenario where 40 dogs are concurrently barking, which means they are barking at the exact same second. This value represents the loudest hundredth of a second (0.01 seconds) from the dogs barking compared to the quietest nighttime hour and quietest exterior ambient 1 second interval at the shared north property line. Noise Impact Analysis Assumptions: All dogs will be in one or more of the playrooms overnight, shown in Figure 2, which are located on the south fagade and have interior partitions and doors between these rooms and the west fagade door and the north fagade windows. The predicted noise level at the nearest property line is shown with the proposed interior partitions and doors. Which are single metal stud walls (1 layer of 5/8" gypsum on each side, 20 ga, 16" on -center — STC 40) and solid core doors with partial seals — STC 22. Note that for each playroom there is two doors to get to the hallway and the north fagade is buffered by the Spa Room and Breakroom. The storefront glass is double pane with'/4" thick glass and a'/2" air space (laboratory STC 35 rated), which is how it tested in the field. Reduction due to distance through north fagade from playrooms considers a loss of 3 dB per doubling of distance, which was verified with the interior noise measurements in the shell building. As shown the crates within the Toy playroom are near the west fagade, but against the brick and during overnight boarding within the crates the dogs will not be able to bark within less than 7'-0" from the west fagade windows. No noise reductions were taken into consideration in this analysis associated with the shared 5-6" CMU wall along the north property line, though the calculations for this barrier show reductions of 7 to 10 dBA depending on the location of the source and the height of the residence's window. The noise reduction from the rooftop parapet was taken into consideration for sound transmission through the roof and rooftop packaged units. The barrier calculations and on -site measurements yielded a reduction of 19 dBA from the parapet. The sum of all sound transmission paths were calculated to the shared property line compared to the ambient noise levels. In order to accurately measure noise from a single source, that source must be 10 dB louder than the ambient noise levels at the receiving location. Humans and animals cannot hear sounds that are 10 dB quieter than their ambient noise environment. Sound Emission Throuoh North Facade I , 40 Dogs Barking (LTM at 3-feet 109 TL of Interior Partitions, Doors, and Distarce 36 TL of North Facade - 36 distance Reduction 'x = 871— 20"lo u3-ftl 29 SPL at Property Line 9 Sound Fmi—inn Thrnunh wa 4 Parade wi#h nnnr -I I I I ` rr• , aG Dogs Bar<ing (4,M 'i at 3-feet 109 TL of Interior Partitions, Doors, and Distarce - 35 TL of West Facade wth Door - 23 Distance Reduction x = 109 — 20'lo fx+3-ft'I - 31 SPL at Property Line 2D �,ounaemission i nrD'uG nvvesta aoesnrou narcrerrom:uni .i. , I • r.i �. 40 Dogs Barking (UiW at 3-feet 109' TL of Interior Distance -10 TL of West Fagade with Doer 36 Distance Reduction;x = 109 ) — 20*-o fx+3-ft'; - 31 SPL at Property Line 32 Sound Fmi_ceinn Thrnunh Roof & RTtls MRA m 24 uPal tpR) at 3-feet 40 Dogs Ba7Roof 1U9 TL •vf InteriflrTile and Distance a TL of nd RTUs - 32 Noise Barrier Reduction from roof are et -19 Distance Reduction (x = 109',l — 20'iog(x+3-ft) - 31 SPL at Property Line 27 gum of Sound Pressure Levels at North Residential Pro ert Lin North Facade 9 West Facade with Door 20 West Fagade through Storefront Only 32 Roof & RTUs 27 Total Predicted Noise impact: 33 A..Already t3kfnJra14.3�sZW0lwith the sound transmission measurementsfrom shell through roof and air duct systems. Environmental Noise Measurements rs"q - . t„ 06 AAA. .. 53 J 45-0 "5v 25.0 � g r Dogtopia - Phoenix: Nighttime Ambient Noise Levels Monday, September 16,. 2019 to Tuesday, September 17, 2019 Quietest Hour = 51 dBA s C1 r Time, Wmm —H4udy Leq T. tiW CP 1P City of Phoenix Noise Code The City of Phoenix Code states the following with regards to dogs barking and noise from com- mercial buildings to adjacent neighbors. Dogs Barking 8-2 Barking or howling dogs. A. No person shall keep a dog within the City limits which is in the habit of barking or howling or disturbing the peace and quiet of any person within the City. 1204 Land Use Matrix The applicable sections of the Land Use: Environmental Quality: 4. Noise, odor, dust, gas, heat, smoke, glare or vibration shall not be emitted at any time by the use that exceeds the general or ambient level by uses immediately off site as compared at the parcel boundary. 6. The noise level, measured at any point on the received property, shall not exceed 55 dBA un- less a use permit is obtained. An occurrence where the sound level increases up to 60 dBA for five continuous seconds or less shall not be deemed a violation of this section as long as there are no more than five occurrences within an hour-long interval. *1 *2 *5 Analysis & Report by Erik Miller -Klein, PE, INCE Board Certified Founding Partner of A3 Acoustics On -site evaluation by Drew Lodarek, Staff Consultant =11 ACOUSTICS