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Sherwood <br /> �? 8071 NORTH LANDER AVENUE <br /> • Labs PO BOX 937 <br /> CORPORA T ! O N HILMAR CALIFORNIA 95324 <br /> 01/02/01 QUALITY CONTROL REPORT DHS Cert #1400 <br /> Total Petroleum Hydrocarbons(TPH) Analysis <br /> Client: FOOTHILL ENGINEERING Date Received: 12/28/01 <br /> 12793 PADDY CREMK Date Started: 12/28/01 <br /> LODI, CA 95240 Date Complete: 01/02/01 <br /> ATTN: ERV RIFENBURG <br /> Lab Report #: H0122801 Lab Sample #:PH0120942-PH0120951 <br /> Linearity Check <br /> BTEX Benzene 0.9994 TPH Gasoline 0.9999 <br /> Toluene 0.9995 TPH Diesel N/A <br /> Ethyl Benz 0.9992 Motor Oil N/A <br /> Xylenes 0.9991 TRPH (418.1) N/A <br /> MTBE N/A <br /> std % Repeatability WBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 97 99 96 98 <br /> • TPH Gasoline 95 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 95 99 4 <br /> Toluene 98 104 6 <br /> Ethyl Benz 96 104 8 <br /> Xylenes 99 102 3 <br /> TPH Gasoline 79 74 7 <br /> TPH Diesel N/A N/A N/A <br /> bdethod Slank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <.3 ug/L <.3 ug/L < 3 ug/L <.3 ug/L <br /> TPH Gasoline <50 ug/L Dmesel/MO N/A TRPH(418-1) N/A <br /> Lab Control sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 95 73.1 - 124 <br /> Toluene 99 73.6 - 120 <br /> Ethyl Benz 88 72.5 - 118 <br /> Xylenes 100 72.7 - 121 <br /> • TPH Gasoline 98 82.4 - 117 <br /> TPH Diesel N/A N/A N/A <br /> TRPH (418.1) N/A N/A <br /> G 1 2JO� <br /> Nancy B3 denweg, Lab Ds F09)667-5258 FAX (209)667-2581 <br />