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Observer Location: R3 Project Name: TheAddington <br />Source: Roof -Top Parking Job Number: 11177 <br />Condition: Operational Analyst. B. Lawson <br />NOISE MODEL INPUTS <br />Noise Distance to Observer <br />332.0 feet <br />Noise Distance to Barrier. <br />315.0 feet <br />Barrier Distance to Observer: <br />17.0 feet <br />Observer Elevation: <br />0.0 feet <br />Noise Source Elevation: <br />40.0 feet <br />Barrier Elevation: <br />0.0 feet <br />Barrier Height: <br />6.0 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 />15.0 <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 />10.0 0.0 <br />44.0 <br />47.0 <br />55.0 <br />61.0 <br />68.6 <br />Distance Attenuation <br />332.0 -22.8 <br />-22.8 <br />-22.8 <br />-22.8 <br />-22.8 <br />-22.8 <br />Shielding (Barrier Attenuation) <br />315.0 -5.3 <br />-5.3 <br />-5.3 <br />-5.3 <br />-5.3 <br />-5.3 <br />Raw (Distance + Barrier) <br />-28.1 <br />15.9 <br />18.9 <br />26.9 <br />32.9 <br />40.5 <br />60 Minute Hourly Adjustment <br />-28.1 <br />15.9 <br />18.9 <br />26.9 <br />32.9 <br />40.5 <br />Observer Location: R4 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 />164.0 feet <br />Barrier Height: 4.0 feet <br />Noise Distance to Barrier. <br />161.0 feet <br />Noise Source Height. 5.0 feet <br />Barrier Distance to Observer: <br />3.0 feet <br />Observer Height. 5.0 feet <br />Observer Elevation: <br />0.0 feet <br />Barrier Type (0-Wall, f-Berm): 0 <br />Noise Source Elevation: <br />50.0 feet <br />Drop Off Coefficient: 20.0 <br />Barrier Elevation: <br />50.0 feet <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 />164.0 -30.3 <br />-30.3 <br />-30.3 <br />-30.3 <br />-30.3 <br />-30.3 <br />Shielding (Barrier Attenuation) <br />161.0 -19.0 <br />-19.0 <br />-19.0 <br />-19.0 <br />-19.0 <br />-19.0 <br />Raw (Distance + Barrier) <br />-49.3 <br />25.1 <br />26.8 <br />28.1 <br />28.4 <br />28.9 <br />39 Minute Hourly Adjustment <br />-51.2 <br />23.2 <br />24.9 <br />26.2 <br />26.5 <br />27.0 <br />