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� � <br /> Yerizon Wireless <br /> SEA(l Glenwood <br /> Emergency Equipment <br /> The proposed equipment includes one Generac 60 kW Diesel Generator with a Level 2A Sound <br /> Enclosure. According to data obtained from the manufacturer, the generator with a Level 2A <br /> Sound Enclosure will produce a sound level of 65 dB(A) at 23 feet. The combined sound <br /> pressure level from all the equipment duriny lhe main`.:nance testing is 66�i3(A) at 23 feet. <br /> The nearest receiving property is 56 feet south of the equipment location. The proposed <br /> equipment is south of the existing electrical substation on a 9 feet by 4 feet 6 inches concrete <br /> pad. The predicted sound level at the nearest property is shown below in Table 4 below. <br /> Table 4 <br /> Application Factors and Predicted Noise Levels <br /> For Pro osed Emer enc Generator <br /> Line A lication Factor South <br /> 1 Combined Sound Pressure Level at 23 ft. dBA . L 1 66 <br /> 2 Distance Factor(DF) -8 <br /> Inverse-S uare Law Frae Field : DF = 2010 d1/d2 56 ft <br /> 3 New Equipment Sound Pressure Level at Receiver, Lpr 58 <br /> Add lines 1 and 2 <br /> As shown in Table 4, the sound pressure level from the proposed emergency generator at the <br /> nearest receiving property is 58 dB(A), which meets the 60 d6(A) 15-minute noise code limit. <br /> Please contact us if you have any questions or require further information. <br /> Sincerely, <br /> SSA Acoustics, LLP Reviewe by, <br /> ��`��i����., <br /> Erik Miller-Klein Alan Burt <br /> Senior Technician Acoustical Consultant <br /> :'�ne 7 <br />