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Ms. Renee Escario <br />RE Consulting <br />October 9, 2019 <br />Page 6 <br />TABLE 3: OPERATIONAL NOISE LEVEL COMPLIANCE <br />Receiver <br />Location' <br />Land <br />Use <br />Noise Level at Receiver Locations (dBA)' <br />Threshold <br />Exceeded?' <br />Lso <br />(30 mins) <br />L25 <br />(15 mins) <br />La <br />(5 mins) <br />Li <br />(1 min) <br />L.. <br />(<1 min) <br />Daytime <br />Residential <br />Standards <br />55 <br />60 <br />65 <br />70 <br />75 <br />- <br />Nighttime <br />50 <br />55 <br />60 <br />65 <br />70 <br />- <br />R1 <br />Residential <br />37.9 <br />40.7 <br />44.8 <br />48.7 <br />51.8 <br />No <br />R2 <br />Residential <br />43.2 <br />1 45.4 <br />49.0 <br />1 52.8 <br />58.6 <br />No <br />R3 <br />Residential <br />46.3 <br />48.6 <br />51.7 <br />54.9 <br />59.9 <br />No <br />R4 <br />Residential <br />46.9 <br />49.1 <br />52.1 <br />55.3 <br />59.9 <br />No <br />R5 <br />Residential <br />36.7 <br />39.4 <br />45.7 <br />51.2 <br />58.5 <br />No <br />R6 <br />Residential <br />34.3 <br />37.2 <br />43.3 <br />48.8 <br />56.0 <br />No <br />R7 <br />Residential <br />31.4 <br />34.2 <br />39.0 <br />43.6 <br />50.3 <br />No <br />'See Exhibit A forth e receiver and noise source locations. <br />Estimated unmitigated Project operational noise levels as shown on Table 2. <br />' Do the estimated Project operational noise levels meet the operational noise level standards? <br />CONCLUSIONS <br />Using reference noise levels to represent the expected noise sources from The Addington site, this <br />analysis estimates the Project -related stationary -source noise levels at nearby sensitive receiver <br />locations. The normal activities associated with The Addington are anticipated to include roof -top air <br />conditioning units, trash enclosure activity, pad -mounted transformers, parking lot vehicle movements, <br />outdoor courtyard activity, outdoor pool/spa activity and roof -top parking activities. The operational <br />noise analysis shows that the Project -related stationary -source noise levels at the nearby sensitive <br />receiver locations will satisfy the City of Santa Ana exterior noise level standards. If you have any <br />questions, please contact me directly at (949) 336-5979. <br />Respectfully submitted, <br />URBAN CROSSROADS, INC. <br />Bill Lawson, P.E., INCE <br />Principal <br />REFERENCES <br />1. Urban Crossroads, Inc. Magnolia at the Park. July 2018. <br />11177-09 Noise Assessment <br />0 <br />