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would run 80 dBA and maximum levels 2 dBA higher would also occur as a <br /> result of daytime operations at the transfer station. <br /> Night operations would be 10 dBA less at all points, but this would be offset by <br /> a 10 dBA penalty for noise occurring at night because it is perceived to be extra <br /> obtrusive then. <br /> 7) Combined Noise From The Operation <br /> Table N-3 summarizes the noise from each of the sources at specified prediction <br /> points and shows the average day - night level (Ldn) at each point. <br /> Points A and E in the mobile home park fall above the acceptable Ldn level of <br /> 60 dBA. Points E, F and G on adjoining industrial property fall above the 70 <br /> dBA Ldn level for property in industrial zones. <br /> 8) Road Noise <br /> Before examining mitigations it will be necessary to add the impact of traffic <br /> along Turner Road to the values determined for the transfer station. This will be <br /> done using the FWHA Noise Model and traffic predictions from the Traffic <br /> Section in this Draft Environmental Impact Report (DEIR). <br /> Two locations are evaluated with respect to traffic noise: Turner east of Cluff <br /> Avenue and Turner Road east of Beckman. In both cases noise is calculated at <br /> a receptor located 50' from the roadway centerline or about 10' back of the <br /> sidewalk. <br /> The mixture of autos, medium and heavy trucks for today's(1989-90)calculations <br /> was taken from field counts in the area. <br /> For the future year 2000+ AD with no project the same ratios as exist today <br /> were used for the vehicle mix. Traffic however, was increased pursuant to <br /> predicted future flows in the traffic section (Pg. 50). <br /> Truck and auto traffic from the expanded project (see Traffic section) was added <br /> to the future (2000 + AD) traffic to arrive at the future traffic flow and vehicle <br /> mix with the project in operation. <br /> The average amount of flow was divided into four periods during the day: 7:00 <br /> a.m. - 7:00 p.m.; 7:00 p.m. - 10:00 p.m.; 10:00 p.m. - 6:00a.m. and 6:00 a.m. <br /> - 7:00 a.m. The equivalent level (Leq) for each period was run on the FHWA <br /> Model and then the Leq's were combined to give an average community noise <br /> equivalent level (CNEL) figure for the 24-hour period. <br /> All traffic was assumed to be travelling at 25 mph. <br /> 33 <br />