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Sherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> C O R P O R A T I O N P.O. BOX 937 <br /> HILMAR, CALIFORNIA 95324 <br /> QUkLT 400 <br /> Total Petroleum Hydrocarbons(TPH) Analysis <br /> Client: FOOTHILL ENGINEERING Date Received: 03/12/01 <br /> 12793 PADDY QRJM Date Started: 03/13/01 <br /> LODI, CA 95240 Date Complete: 03/15/01 <br /> ATTN: ERV RIFENBURG <br /> Lab Report #: H1031202 Lab Sample #:PH1030582-PH1030584 <br /> Linearity Check: <br /> BTEX Benzene 0.9992 TPH Gasoline 0.9992 <br /> Toluene 0.9992 TPH Diesel N/A <br /> Ethyl Benz 0.9994 Motor Oil N/A <br /> Xylenes 1.0000 TRPH (418.1) N/A <br /> MTBE N/A <br /> std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 100 103 93 100 <br /> TPH Gasoline 99 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br /> • Matrix Spike Recoveries MS MSD RPD <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 98 99 1 <br /> Toluene 98 98 0 <br /> Ethyl Benz 100 99 1 <br /> Xylenes 98 98 0 <br /> TPH Gasoline 108 108 0 <br /> TPH Diesel N/A N/A N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <3 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <br /> TPH Gasoline <1 mg/Kg Diesel/MO N/A TRPH(418.1) N/A <br /> Lab Control sample % Reoovery EPA Performance Acceptance Range <br /> STEX Benzene 108 73.1 - 124 <br /> Toluene 105 73.6 -- 120 <br /> Ethyl Benz 119 72.5 - 118 <br /> Xylenes 121 72.7 - 121 <br /> TPH Gasoline 92 82.4 - 117 <br /> TPH Diesel N/A N/A - N/A <br /> TRPH (41$.1) N/A N/A <br /> cy <br /> 1133.�denweg, 'Lab rectOf' <br /> OFFICE:(209)667-5258 FAX: (209) 667-2581 <br />