AT&T EG46 Fox Hollow Road & Amazon Road <br />Emergency Equipment <br />Page 3 <br />The proposed equipment includes one Kohler 50 kW Generator. According to the manufacturer, <br />the generator will produce the following sound levels: <br />Source <br />Sound Level <br />Engine - unhoused <br />80 dBA 23 feet <br />Exhaust - open <br />102 dBA 3 feet <br />The emergency generator would be in operation for less than 10 consecutive minutes during <br />daytime hours on a monthly basis for routine testing, and for longer periods during emergencies. <br />The generator will be located within a room on the south end of the existing church building. The <br />nearest receiving properties are approximately 70 feet to the west and 200 feet south across Fox <br />Hollow road. The building blocks the receiving property to the west. <br />Because the proposed generator would run for less than 10 consecutive minutes at an agreed <br />upon time during daytime hours (7 AM-10 PM), it would not be considered a noise disturbance <br />under the code even if the noise level briefly exceeds the 45 dBA limit. However, to minimize the <br />noise levels from the generator, implement the following noise control measures for each source: <br />Engine Discharge: <br />• Install a louver equivalent to Vibro-Acoustics ALV-MV-8 at the air discharge. <br />Engine Intake: <br />• Install sound absorbing material with a minimum NRC rating of 0.90 on at least 96 square <br />feet of the ceiling and 300 square feet of the walls of the generator room. Recommended <br />products for this application are minimum 2" thick F-Sorb or T-Max. <br />• Install a sheet metal hood on the outside of the air intake opening. Hood to be lined with <br />1" duct liner. <br />Exhaust stack: <br />• Install a critical grade exhaust stack muffler on the engine exhaust stack that provides 25- <br />40 dBA noise reduction equivalent to GT Exhaust Muffler 201-5100. <br />