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i <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 /> i <br /> 09/09/97 QUALITY CONTROL REPORT DHS Certification #1400 <br /> Nancy Biedenweg, Lab Director <br /> Client DEL-TECH Date Received 09/05/97 <br /> 10624 OLIVE AVE Date Started: : 09/05/97 <br /> OAKDALE, CA 95361 Date Complete: 09/09/97 <br /> AT17N: DON LIGHT <br /> I <br /> Lab Report #: H7090506 Lab Sample #s PH7090191-197 <br /> Lineari Check: <br /> BTEX Benzene 0.9999 TPH Gasoline 0.9996 <br /> Toluene 09999 TPH Diesel N/A <br /> Ethyl Benzene 0.9998 Motor Oil N/A <br /> Xylenes 0.9993 TRPH (418.1) N/A <br /> MTBE N/A <br /> Std % Repeatability j MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEC N/A 95 98 101 100 <br /> TPH Gasoline 97 TPH Diesel N/A <br /> TRPH (418.1) N/A TPH Motor Oil NIA <br /> Matrix Spike Recoverle$ MSD RPD <br /> MTBE N/A N/A ERR <br /> BTEX Benzene 96.0 93.0 32 <br /> Toluene 98.0 94.0 42 <br /> Ethyl Benzene 1020 96.0 6.1 <br /> Xylenes 105.0 1000 4.9 <br /> TPH Gasoline 1050 102A 29 <br /> TPH Diesel N/A N/A ERR <br /> TRPH 418.1 N/A <br /> Method Blank MTBE Benzene Toluene Eth"Benz Xylenes <br /> BTEX NIA <.3 u <.3 u L <.3 u L `<.'3 u L <br /> TPH Gasoline <50 u L TPH Diesel/MO N/A TRPH(418,1) N/A <br /> Lab Control Sam le % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 87 54.9 - 141 <br /> Toluene 93 687 - 127 <br /> Ethyl Benz 99 70 8 - 130 <br /> Xylenes 99 69.3 - 138 <br /> TPH Gasoline 119 65.2 - 146 <br /> TPH Diesel N/A 34.6 - 117 <br /> TRPH (418.1) N/A WA <br /> OFFICE (209) 667-5258 • FAX (209) 667-2581 • BBS (209) 667-4119 <br /> -wrrivF- L _ "i -, I ? _ <br />