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Sherwood <br /> DER AVENUE <br /> 8071 NORTH LANDER PO BOX 937 <br /> C 0 R P 0 R A T 1 0 N <br /> HILMAR, CALIFORNIA 95324 <br /> IWO199 UALI Y CONTROL=DEPORT---- QHS-CertlflcatlonVt40 <br /> Total Petroleum Hydrocarbons(TPH)Analysis Nancy Biedenweg, Lab Director <br /> 50 <br /> Client. FOOTHILL ENGINEERING Date Received 12123199 - <br /> 12793 PADDY CREEK LN Date Started. 12128199 <br /> LODI, CA 95240 Date Complete 12/30/99 <br /> ATTN- ERVIN RIFENBl1RG <br /> Lab Re ort* H9122301 Lab Sample ilk PH9120930-PH9120944 <br /> Linearity Check. <br /> BTEX Benzene 0.9991 TPH Gasoline 09999 <br /> Toluene 0.9998 TPH Diesel N/A <br /> Ethyl Benzene 0.9996 Motor Oil NIA <br /> Xylenes 0.9955 STODDARD SOLVENTS 09995 <br /> MTBE NIA <br /> Std%Repeatability MTBE Benzene Toluene Eth Benz xylenes <br /> BTEX NIA 94 95 87 93 <br /> TPH Gasoline 99 TPH Diesel NIA <br /> STODDARD SOLVENTS 98 TPH Motor Oil NIA <br /> • Matrix Spike Recoveries MS MSD RPD <br /> MTBE NIA NIA ERR <br /> BTEX Benzene 96 99 31 <br /> Toluene 95 100 51 <br /> Ethyl Benzene 103_ 101 2 0 <br /> Xylenes 95 92 3 2 <br /> TPH Gasoline 108 101 6 7 <br /> TPH Diesel NIA NIA ERR <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA <3 <3 <3 < 3 <br /> TPH Gasoline <50 TPH Diesel/MO NIA TRPH(4101) NIA <br /> Lab Control Sam le% Recovey EPA Performance Acceptance Range <br /> BTEX Benzene 97 73.1 - 124 <br /> Toluene 94 736 - 120 <br /> Ethyl Benz 91 725 - 118 <br /> Xylenes 95 72.7 - 121 <br /> TPH Gasoline 97 824 - 117 <br /> TPH Diesel NIA NIA NIA <br /> TRPH (418 1) NIA NIA <br /> OFFICE (209)667-5258 FAX (209)667-2581 <br />