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az Sherwood <br /> 8071 NORTH LANDER AVENUE <br /> Labs <br /> . C O R P O R A T 1 0 N P O BOX 937 <br /> HILMAR, CALIFORNIA 95324 <br /> 05/07/87 QUALITY CONTROL REPORT DHS Certification #1400 <br /> Volatile Analyses Nancy Biedenweg, Lab Director(, <br /> Client: DEL-TECH Date Received: 05/05/97 <br /> 10624 OLIVE AVE Date Started, : 05/05197 <br /> OAKDALE, CA 95361 Date Complete: 05/107197 <br /> ATTN• DON LIGHT <br /> Lab Report #: H7050501 Lab Sample #s PH70M02-107 <br /> Lineari Check: <br /> BTEX Benzene 0.9999 TPH Gasoline M9999 <br /> Toluene M9998 TPH Diesel N/A <br /> Ethyl Benzene M9998 Motor Oil NIA <br /> Xylenes 0.9999 TRPH (418.1) N/A <br /> MTBE NIA <br /> Std % Rep!mtability MTBE Benzene Toluene Eth Benz Xylenee <br /> BTEX N/A 99 101 100 102 <br /> TPH Gasoline 88 TPH Diesel N/A <br /> TRPH (4118.1) N/A TPH Motor Oil N/A <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE NIA N/A ERR <br /> BTEX Benzene 101.0 990 20 <br /> Toluene 101.0 101.0 00 <br /> Ethyl Benzene 100.0 94.0 8.2 <br /> Xylenes 88.0 93.0 3,1 <br /> TPH Gasoline 87.0 83.0 4.7 <br /> TPH Diesel NIA N/A <br /> TRPH 4181 N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <,3 u c.3 u <,3 u L <.3 u L <br /> TPH Gasoline <50 u TPH Diesel/MO N/A TRPH(41&1) N/A <br /> Lab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEC Benzene 87 37.0 - 151.0 <br /> Toluene 89 47.0 - 150.0 <br /> Ethyl Benz 66 36-9 - 1020 <br /> Xylenes 92 427 137.9 <br /> TPH Gasoline 110 33.0 - 130.1 <br /> TPH Diesel N/A 45.1 - 133.2 <br /> TRPH (41 a1) N/A N/A <br /> OFFICE (209) 667-5258 • FAX (209) 667-2581 ® BBS (209) 667-4119 <br />