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f) <br /> Sherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> . C O R P O R A T 1 0 N P.O. BOX 937 <br /> HILMAR CALIFORNIA 95324 <br /> 08!11199 QUALITY CONTROL REPORT DHS Certification 01400 <br /> Total Petroleum Hydrocarbons(TPH)Analysis Nancy Bledenweg, Lab DI cto/ n <br /> Client: FOOTHILL ENGINEERING Date Received: 07121M d- <br /> 9�I�/Rs <br /> 12793 PADDY CREEK LN Date Started: : 07/21/99 <br /> LODI, CA 95240 Date Complete: 07/26/99 <br /> ATTN: ERVIN RIFENBURG <br /> Lab Re ort at H9072103 Lab Sample#s: PH9070842-PH9070848 <br /> [Linearity Check: <br /> BTEX Benzene 0.9996 TPH Gasoline 0.9999 <br /> Toluene 0.9995 TPH Diesel NIA <br /> FFMri FlonrPni. A•A4AIR MwMr Ail NfAf <br /> MTBE s _ 0-997r 1 TRPH (418.1) <br /> Sbd y Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA 99 106 88 99 <br /> TPH Gasoline 99 TPH Diesel NIA <br />• TRPH (418.1) NIA TPH Motor Oil NIA <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE NIA NIA ERR <br /> BTEX Benzene 103 104 1.0 <br /> Toluene 93 95 2.1 <br /> Ethyl Benzene 92 96 4.3 <br /> Xylenes 97 97 0.0 <br /> TPH Gasoline 99 101 2.0 <br /> TPH Diesel NIA NIA ERR <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <.3 ug/L <3 <.3 C3 <br /> TPH Gasoline <50 TPH Diesel/MO N/A TRPH(418.1) NIA <br /> Lab Control Sample%Recovery_ EPA Performance Acceptance Range <br /> BTEX Benzene' 102 - - - 73.1 - 124 <br /> Toluene 89 73.6 - 120 <br /> Ethyl Benz 118 72.5 - 118 <br /> Xylenes 102 72.7 - 121 <br />• TPH Gasoline 96 66.0 - 150 <br /> TPH Diesel NIA NIA NIA <br /> TRPH (418.1) NIA u NIA <br /> OFFICE: (209)667-5258 FAX: (209)667-2581 <br />