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Forward Landfill LFG Acoustical Analysis Page 12 <br />May 18, 2011 <br />APPENDIX B — Keller Canyon Noise Emissions Measurement Summary <br />100712 007 <br />dB 07/12/2010 09:40:28 AM - 09:41 :58 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=74.4 dB LF10=75.9 dB LF50=74.1 dB LF90=72.7 dB <br />100712 007 <br />% Based on LAF , 10ms Classwidth: 0.2 dB 07/12/2010 09:40:28 AM - 09:41:58 AM <br />100 Li = 77.9 d <br />L5= 76.5 d <br />L10 = 75.9 d <br />90 L50 = 74.1 d <br />L90 = 72.7 d <br />L95 = 72.3 d <br />80 L99 = 71.6 d <br />60- <br />50- <br />40- <br />05040 -- -- - ------ <br />30- <br />20- <br />10- <br />0 <br />-3020100 <br />71 72 73 74 75 76 77 78 79 dB <br />Level - Cumulative <br />Cursor. [74.2 ; 74.4[ dB Level: 7.2% Cumulative: 48.0% <br />Figure 7 - Keller Canyon 100 ft from Roll -Up Door <br />