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Harvest Church- CUP set <br />December, 2025Page - 6 <br />Business operations - Acoustics <br />Amplified Music/Speech: <br />Any & all sound amplification will be consistent with Sunday morning worship gatherings, midweek small groups and occasional Saturday <br />events. <br />Times: <br />•Sunday mornings 10:00am -12:30pm <br />•Midweek – Mon-Fri 7:00pm-8:30pm <br />•Occasional Saturdays 10:00am-2:00pm <br />Harvest Valley Church has contracted with the following design/contractors for all its acoustical & sound requirements for the proposed build. <br />•Acoustech- Acoustical design company <br />•MGA – Audio/video/lighting <br />Below are the Harvest Valley Church’s proposed applications to meet all sound/decibel levels as requested per City of Pleasanton. <br />Sound Mitigation: <br />•Installation of 2, 4 or 6” Acoustical core absorbency panels or an R15 or R21 batt insulation at all walls adjacent to Suite B for sound. As well as <br />exterior wall insulation according to title 24 calculations that would mitigate sound to adjacent parcels and property line. <br />Decibel Levels: <br />•Normal speech conversation level for a small group of people is 60 dB-SPL <br />•Typical teaching levels through a reinforcement system are 60-70 dB-SPL <br />•Strong preaching levels through a reinforcement system are 70-80+ dB-SPL <br />•Typical contemporary worship music levels are 85-105 dB-SPL <br />•Typical contemporary Christian concert levels are 100-115 dB-SPL <br />We have specified an STC 62 (Sound Transmission Class) for the newly constructed interior walls around the Sanctuary. Sound levels generated <br />in the Sanctuary will be attenuated ≈62 dB (assuming all the doors in those walls are closed. For the backstage areas, that will be one additional <br />wall - the exterior walls we have specified an STC 52 for the newly constructed walls beyond the Sanctuary walls. So, any sound levels generated <br />in the Sanctuary will be attenuated ≈62 db + ≈52dB (a total of 112 dB) before reaching at least one more wall. <br />The existing exterior wall construction should achieve at least an STC 62, then the maximum level escaping the Sanctuary to the exterior of the <br />House Right wall would be ≤43 dB which should be acceptable. <br />The frequency range included in the Rating is 125-4000 Hz, which encompasses human speech and most common indoor residential/commercial <br />sounds (television and/or music). <br />NOTE: See attached documents.