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Sherwood <br /> Lars 8071 NORTH LANDER AVENUE <br /> C 0 R P 0 R A r r O N P.O. BOX 937 <br /> HILMAR CALIFORNIA 95324 <br /> 10/26/00 QUALITY CONTROL REPORT DHS Cert. 01400 <br /> Total Petroleum Hydroaarbons(TPH) Analyrac <br /> Client: GEOLOGICAL TECHNICS, INC. Date Reoelved: 10/20/00 <br /> 2741 RIVER RD. Date Started: 10/23/00 <br /> MODESTO, CA 95351 Date Complete: 10/26/00 <br /> �.. ATTN: RAY KABLANOW <br /> Lab Report #: H0102008 Lab Sample #!PHO100733-PHO100739 <br /> Linearity Check: <br /> BTEX Benzene 0.9983 TPH Gasoline 1.0000 <br /> Toluene 0.9995 TPH Diesel 0.9999 <br /> Ethyl Benz 0.9978 Motor Oil 0.9965 <br /> Xylenes 0.9987 TRPH (418.1) N/A <br /> MTBE 0.9975 <br /> Std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX 101 102 99 106 101 <br /> TPH Gasoline 93 TPH Diesel 98 <br /> TRPH (418.1) N/A Motor Oil 110 <br /> IN-t--ix Spike Recoveries MS MSD RPD <br /> MTBE 110 102 8 <br /> BTEX Benzene 95 94 1 <br /> Toluene 102 95 7 <br /> Ethyl Benz 95 87 9 <br /> Xylenes 93 92 1 <br /> �. TPH Gasoline 88 90 2 <br /> TPH Diesel 99 105 6 <br /> ++ H.thod sl■nk MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX <50 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <br /> TPH Gasoline <1 mg/Kg Diesel/MO <5 mg/Kg TRPH(418.1) N/A <br /> Lab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 104 73.1 - 124 <br /> Toluene 98 73.6 - 120 <br /> Ethyl Benz 103 72.5 - 118 <br /> 4 Xylenes 101 72.7 - 121 <br /> TPH Gasoline 91 82.4 - 117 <br /> TPH Diesel 103 76.5 -- 136 <br /> TRPH (418.1) N/A N/A <br /> N cy B ledenweg, Lab �eetfsr <br /> OFFICE: (209)667-5258 FAX: (209)667-2581 <br />