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75D - PH - 2525 N MAIN
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11/14/2019 7:54:38 PM
Creation date
11/14/2019 5:55:43 PM
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City Clerk
Doc Type
Agenda Packet
Agency
Planning & Building
Item #
75D
Date
11/19/2019
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Observer Location: R7 Project Name: TheAddington <br />Source: Air Conditioning Unit (Roof -Top) Job Number: 11177 <br />Condition: Operational Analyst. B. Lawson <br />NOISE MODEL INPUTS <br />Noise Distance to Observer <br />254.0 feet <br />Noise Distance to Barrier. <br />251.0 feet <br />Barrier Distance to Observer: <br />3.0 feet <br />Observer Elevation: <br />0.0 feet <br />Noise Source Elevation: <br />50.0 feet <br />Barrier Elevation: <br />50.0 feet <br />Barrier Height: <br />4.0 feet <br />Noise Source Height. <br />5.0 feet <br />Observer Height: <br />5.0 feet <br />Barrier Type (0-Wall, f-Berm): <br />0 <br />Drop Off Coefficient. <br />20.0 <br />20 = 6 dBA per doubling of distance <br />15 = 4.5 dBA per doubling of distance <br />NOISE MODEL PROJECTIONS <br />Noise Level Distance (feet) Leq L50 L25 L8 L2 Lmax <br />Reference (Sample) <br />5.0 0.0 <br />74.4 <br />76.1 <br />77.4 <br />77.7 <br />78.2 <br />Distance Attenuation <br />254.0 -34.1 <br />-34.1 <br />-34.1 <br />-34.1 <br />-34.1 <br />-34.1 <br />Shielding (Barrier Attenuation) <br />251.0 -19.0 <br />-19.0 <br />-19.0 <br />-19.0 <br />-19.0 <br />-19.0 <br />Raw (Distance + Barrier) <br />-53.1 <br />21.3 <br />23.0 <br />24.3 <br />24.6 <br />25.1 <br />39 Minute Hourly Adjustment <br />-55.0 <br />19.4 <br />21.1 <br />22.4 <br />22.7 <br />23.2 <br />Observer Location: R7 Project Name: TheAddington <br />Source: Trash Enclosure Activity Job Number: 11177 <br />Condition: Operational Analyst: B. Lawson <br />NOISE MODEL INPUTS <br />Noise Distance to Observer <br />506.0 feet <br />Noise Distance to Barrier. <br />219.0 feet <br />Barrier Distance to Observer: <br />287.0 feet <br />Observer Elevation: <br />0.0 feet <br />Noise Source Elevation: <br />0.0 feet <br />Barrier Elevation: <br />0.0 feet <br />Barrier Height: <br />50.0 feet <br />Noise Source Height. <br />5.0 feet <br />Observer Height. <br />5.0 feet <br />Barrier Type (0-Wall, f-Berm): <br />0 <br />Drop Off Coefficient: <br />20.0 <br />20 = 6 dBA per doubling <br />of distance <br />15 = 4.5 dBA per doubling <br />of distance <br />NOISE MODEL PROJECTIONS <br />Noise Level Distance (feet) Leq L50 L25 L8 L2 Lmax <br />Reference (Sample) <br />5.0 0.0 <br />69.0 <br />75.0 <br />82.0 <br />87.0 <br />88.5 <br />Distance Attenuation <br />506.0 -40.1 <br />-40.1 <br />-40.1 <br />-40.1 <br />-40.1 <br />-40.1 <br />Shielding (Barrier Attenuation) <br />219.0 -16.6 <br />-16.6 <br />-16.6 <br />-16.6 <br />-16.6 <br />-16.6 <br />Raw (Distance + Barrier) <br />-56.7 <br />12.3 <br />18.3 <br />25.3 <br />30.3 <br />31.8 <br />60 Minute Hourly Adjustment <br />-56.7 <br />12.3 <br />18.3 <br />25.3 <br />30.3 <br />31.8 <br />
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