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<br /> <br />ͭͲͱͱʹ-ͬͰ Noise Memo.docx ͵ Warner Avenue Footlab <br />PROJECT OPERATIONAL NOISE LEVELS <br />Using the reference noise levels to represent the Project operations that include roof-top air <br />conditioning units, trash enclosure activity, and parking lot vehicle movements, Urban <br />Crossroads, Inc. calculated the operational source noise levels that are expected to be <br />generated at the Project site and the Project-related noise level increases that would be <br />experienced at each of the sensitive receiver locations. Table 2 shows the Project <br />operational noise levels during the daytime hours of 7:00 a.m. to 10:00 p.m. The daytime <br />hourly noise levels at the off-site receiver locations are expected to range from 43.6 to <br />48.7 dBA Leq. <br />TABLE 2: DAYTIME PROJECT OPERATIONAL NOISE LEVELS <br />Noise Source1 <br />Operational Noise <br />Levels by Receiver <br />Location (dBA Leq) <br />R1 R2 R3 <br />Loading Dock Activity 48.0 41.7 35.2 <br />Roof-Top Air Conditioning Units 38.9 40.3 39.6 <br />Trash Enclosure Activity 31.1 26.8 19.9 <br />Parking Lot Vehicle Movements 33.0 33.9 32.8 <br />Soccer Games 28.1 29.9 39.3 <br />Total (All Noise Sources) 48.7 44.7 43.6 <br />1 See Exhibit 4 for the noise source locations. CadnaA noise model <br />calculations are included in Appendix B. <br />Table 3 shows the Project operational noise levels during the nighttime hours of 10:00 p.m. <br />to 7:00 a.m. The nighttime hourly noise levels at the existing off-site receiver locations are <br />expected to range from 37.2 to 38.1 dBA Leq. The differences between the daytime and <br />nighttime noise levels are primarily related to the estimated duration of noise activity, as <br />outlined in Table 1. Appendix B includes the detailed noise model inputs. <br />TABLE 3: NIGHTTIME PROJECT OPERATIONAL NOISE LEVELS <br />Noise Source1 <br />Operational Noise <br />Levels by Receiver <br />Location (dBA Leq) <br />R1 R2 R3 <br />Loading Dock Activity 0.0 0.0 0.0 <br />Roof-Top Air Conditioning Units 36.5 37.9 37.2 <br />Trash Enclosure Activity 28.7 24.4 17.5 <br />Parking Lot Vehicle Movements 0.0 0.0 0.0 <br />Soccer Games 0.0 0.0 0.0 <br />Total (All Noise Sources) 37.2 38.1 37.2 <br />1 See Exhibit 4 for the noise source locations. CadnaA noise model <br />calculations are included in Appendix B. <br />