Acoustical Analysis 062826 resubmission 4901 2414 2009 v1

Acoustical Analysis of Site Sound Emissions Proposed Mavis Tire Center #2296 - West Orange, NJ 28 June 2026 Page 3 As the proposed tire center is anticipated to be operational only during daytime hours, operational sound should not exceed 65 dB(A) at nearby receptors. Because HVAC equipment will operate during the nighttime hours, it should meet the more stringent nighttime noise code limit of 50 dB(A) at residential receptors. While OAA acknowledges that commercial noise limits apply, the focus of this analysis was on the residential receptors as these receptors are closer and are more likely to be sensitive than commercial uses. Impact wrenches are the primary noise source associated with vehicle servicing. Based on OAA survey data at another Mavis Tire facility, impact wrench activity with the garage doors open produces maximum sound levels of 73 dB(A) at a distance of 50 feet. Impact wrench noise is primarily high-frequency sound. Given the proposed 6-foot solid fence will attenuate about 10 dB at higher frequencies, results indicate that such activity will be below the daytime noise code limit of 65 dB(A) at residential receptor vantage points. With the garage door closed, results will reduce by an additional 10 dB. Specific calculations are included in Attachment A at the end of this report. Rooftop equipment serving the building includes two 10-ton rooftop units, one 5-ton rooftop unit, and exhaust fans. The proposed rooftop units are manufactured by Trane and have sound power levels ranging from 82 to 86 dB(A). The exhaust fan is a downblast centrifugal 2,500 cfm fan with a sound power level of 74 dB(A). There is also a small toilet exhaust fan which produces negligible sound. The rooftop is surrounded by a tall parapet, which attenuates RTU noise. Analyses show that the total HVAC equipment sound level is well below 50 dB(A) at the nearest residences. Calculations are included at the end of this report in Attachment A. Overall, the results of this acoustical analysis indicate that the project will fully comply with all State noise code limits. HVAC equipment is shown to meet nighttime noise code limits and service bay activity during the day is shown to meet daytime noise code limits. Given the results of this analysis, no negative acoustical impact is expected from the proposed Mavis Tire Center.