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• • Draft Supplemental Environmental Impact Report Page IV.0-7 • Forward Inc. Landfill 2018 Expansion Project • Table IV.0-3: Existing Noise Environment in the Project Area Location Time Period Ldn &Leg WBA) Noise Sources Site 1: Austin Rd., June 5, 12:00 24-hour Ldn's = Unattended noise measurements do • approximately 0.4 a.m. through 71, 71, 72 not specifically identify noise miles north of June 7, 11:59 sources. However, the noise results landfill entrance. p.m., 2018 Hourly average clearly indicate the plant was a • 80 feet east from Tuesday - Leq's ranged constant source of noise at this • center of Austin Rd. Thursday from: location. 72-hour 63 - 70 • measurement Site 1: Austin Rd., June 4, 2018 5-minute results: Amresco Power Plant across road • approximately 0.4 11:36- 11:46 Leq's =66, 66 (approx. 190 feet from meter) miles north of a.m. L90's= 61, 61 resulted in a background noise level landfill entrance. of 61 dB. Heavy trucks and other 80 feet east from traffic along Austin Rd., birds • center of Austin Rd. chirping. Loudest heavy truck pass- by resulted in an Lmax of 79 dB. Site 2: Austin Rd. June 5, 12:00 24-hour Ldn's= Unattended noise measurements do at landfill entrance. a.m. through 72, 73, 73 not specifically identify noise 40 feet west from June 7, 11:59 sources. • center of Austin p.m., 2018 Hourly average Rd.,south of Tuesday- Leq's ranged entrance. Thursday from: • 72-hour 52 -71 measurement Site 2: Austin Rd. June 4, 2018 5-minute results: Birds chirping(up to 51 dB), heavy at landfill entrance. 11:03-11:13 Leq's=63, 63 duty trucks and other vehicles along 47 feet west from a.m. L90's= 46, 52 Austin Rd. and turning into/out of • center of Austin the landfill entrance. A heavy truck Rd., south of pass-by resulted in an Lmax of 77 entrance. dB. Background noise was about 43 • dB. Site 3: Austin Rd., June 5, 12:00 24-hour Ldn's= Unattended noise measurements do • south of S curve, a.m. through 67, 67, 68 not specifically identify noise • approximately 1.7 June 7, 11:59 sources. miles south of p.m., 2018 Hourly average • landfill entrance. Tuesday- Leq's ranged • 56 feet east from Thursday from: center of Austin Rd. 72-hour 48 -66 • measurement Site 3: Austin Rd., June 4, 2018 5-minute results: Heavy trucks and other traffic along south of S curve, 12:41-12:51 Leq's =60, 61 Austin Rd. Maximum noise level of approximately 1.7 p.m. L90's=44,45 77 dB was from a heavy truck pass- • miles south of by. Airplanes were up to 55 dB. landfill entrance. Traffic from French Camp Rd. was