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Forward Landfill LFG Acoustical Analysis Page 15 <br />May 18, 2011 <br />100712 012 <br />dB 07/12/2010 09:56:15 AM - 09:57:30 AM <br />12.50 31.50 63 125 250 500 1000 2000 4000 8000 16000 A C Hz <br />LZeq LZF10 - LZF50 LZF90 <br />Cursor. (A) Leq=67.8 dB LF10=68.6 dB LF50=67.7 dB LF90=66.8 dB <br />100712 012 <br />% Based on LAF , 10ms Classwidth: 0.2 dB 07/12/2010 09:56:15 AM -09:57:30 AM <br />100 <br />L1 = 70.2 dB <br />L5 = 68.9 dB <br />L10 = 68.6 dB <br />90 <br />L50 = 67.7 dB <br />L90 = 66.8 dB <br />L95 = 66.6 dB <br />80 <br />L99 = 66.3 dB <br />70- <br />60- <br />05040 <br />so- <br />40- <br />30 <br />30- <br />20- <br />2010066 <br />to - <br />0 -- <br />6666.5 67 67.5 <br />68 68.5 69 69.5 70 70.5 71 71.5 72 <br />dB <br />Level - Cumulative <br />Cursor. <br />[67.6 ; 67.8[ dB Level: 9.8% Cumulative: <br />53.1% <br />Figure 10. Keller Canyon 65 ft from Office Wall <br />