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)l Sherwood <br /> L a bs 8071 NORTH LANDER AVENUE <br /> PO BOX 937 <br /> C O R P O R A T I O N <br /> HILMAR, CALIFORNIA 95324 <br /> 09/25/00 QUALITY CONTROL REPORT DRS Cert. #1400 <br /> Total Petroleum Hydrocarbons(TPH) Analysss <br /> Cla.ent: FOOTHILL ENGINEEB"G Date Recsavrd: 09/18/00 <br /> 12793 PADDY CREEK Date Started: 09/19/00 <br /> LODI, CA 95240 Date Complete: 09/25/00 <br /> ATTN: ERV RIPENBURG <br /> Lab Report #: H0091903 Lab Sample O-PHOO90961--PHOO90971 <br /> Lzv&=%ty Check <br /> BTEX Benzene 0.9992 TPH Gasoline 1.0000 <br /> Toluene 0.9989 TPH Diesel 0.9996 <br /> Ethyl Benz 0.9985 Motor Oil 0.9998 <br /> Xylenes 0.9990 TRPH (418.1) N/A <br /> MTBE N/A <br /> std % Rapeatabiiity MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 96 98 95 98 <br /> TPH Gasoline 109 TPH Diesel 102 <br /> TRPH (418.1) N/A Motor Oal 100 <br /> Matrix Spike MS iDd3D RPD <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 101 97 4 <br /> Toluene 105 100 5 <br /> Ethyl Benz 103 97 6 <br /> Xylenes 102 98 4 <br /> TPH Gasoline 107 107 0 <br /> TPH Diesel 111 107 4 <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <3 ug/Kg <3 ug/Ag <3 ug/K4 <3 ug/Kg <br /> TPH Gasoline <1 mg/Kg D3-esel/M0 <5 mg/Kg TRPH(418-1) N/A <br /> lab Cogtrol Sample % Recovery EPA Performance Acceptance Range <br /> BTEC Benzene 85 72.1 - 124 <br /> Toluene 90 72.6 - 120 <br /> Ethyl Benz 92 73.5 - 118 <br /> Xylenes 106 73 7 - 121 <br /> TPH Gasoline 100 82.4 - 117 <br /> TPH Diesel 114 76.5 - 136 <br /> 46 TRPH (418.1) N/A N/A <br /> 70 k1Z J, <br /> L22 Bedenveg, Lab D ector, <br /> OFFICE (209) 667-5258 0 FAX (209)667-2581 <br />