Laserfiche WebLink
Forward Landfill LFG Acoustical Analysis <br />May 18, 2011 <br />Table 2. Noise -Producing Equipment Noise Emissions Ratings <br />ID <br />Manufacturer Model <br />Raw <br />Atten. <br />Net <br />LWA <br />dB <br />LWA <br />dB <br />dB <br />Prechamber <br />100.7 <br />15 <br />85.7 <br />Compressor 1 <br />Prechamber <br />100.7 <br />15 <br />85.7 <br />Compressor 2 <br />Genset 1 <br />GE JENBACHER J616 <br />GS - E22 <br />122.8 <br />15 <br />107.8 <br />Genset 2 <br />122.8 <br />15 <br />107.8 <br />Genset Exhaust <br />GE JENBACHER J616 <br />127.0 <br />48 <br />79.0 <br />1 <br />GS - E22, Miratech SCR <br />and GT 201 Silencers <br />Genset Exhaust <br />127.0 <br />48 <br />79.0 <br />2 <br />Roof Exhaust <br />Greenheck <br />97.5 <br />97.5 <br />Fan 1 <br />Roof Exhaust <br />97.5 <br />97.5 <br />Fan 2 <br />Radiator 1 <br />Sutton Stromart <br />98.0 <br />98.0 <br />Radiator 2 <br />98.0 <br />98.0 <br />Rooftop <br />Cook 120HLC l OD <br />70.7 <br />70.7 <br />Exhaust <br />Gas Blower 1 <br />Kaeser Omega in <br />ArtUSA 4" Equipment <br />84.9 <br />84.9 <br />Gas Blower 2 <br />84.9 <br />84.9 <br />Enclosure <br />Chiller <br />York <br />102.0 <br />102.0 <br />3 AMBIENT NOISE <br />Page 5 <br />The project site is in an active farming area, approximately 2 miles east of Highway <br />SR99 and a little over 2 miles east of the main runway of Stockton Municipal Airport. <br />Ambient noise is expected to be consistent with the proximity to these noise sources and <br />may well exceed the ordinance standards. In the interest of conservatism, the ordinance <br />standards will therefore be accepted as the criteria for the facility. <br />Project sound levels were determined as follows: <br />A series of acoustic measurements was taken at locations surrounding the <br />completed Keller Canyon facility while producing power at full capacity. The <br />one-third octave sound levels and measurement distances were used to compute <br />the effective sound power level being radiated from each side of the facility. <br />These levels were compared to levels predicted from the manufacturers' ratings as <br />shown in Table 2 and found to be in good agreement. Acoustic treatments used in <br />the Keller Canyon facility are to be duplicated on the Forward project. <br />2. The project area topography, locations of noise sensitive uses and measurement <br />positions and the project facility were entered into the SoundPLAN 7.0 database. <br />