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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 /> 07127M QUALITY CONTROL REPORT DHS Certification#1400 <br /> Volatile Analyses Nancy Biedenweg, Lab Director <br /> Client: DEL TECH Date Received: 07120/98 <br /> 110624 OLIVE AVE Date Sampled : 07rd2J88 <br /> OAKDALE, CA 95361 Date Complete: 07122/98 <br /> ATTN: DON LIGHT <br /> Lab Report* H8072001 Lab Sample gs: PH8071509-1516 <br /> Linear! Check: <br /> BTEX Benzene 0.9997 TPH Gasoline 0.9997 <br /> Toluene 0.9992 TPH Diesel NIA <br /> Ethyl Benzene 0.9m Motor Oil WA <br /> Xylenes 0.9993 TRPH (418.1) NIA <br /> MTBE 0.9999 <br /> Std% Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX 102 92 93 99 97 <br /> TPH Gasoline 95 TPH Diesel NIA <br /> TRPH (418.1) NIA TPH Motor Oil NIA <br /> ktri;x Spike Recoveries MS MSD RPD <br /> MTBE 85 94 10.1 <br /> BTEX Benzene 93 97 4.2 <br /> Toluene 101 104 2.9 <br /> Ethyl Benzene 105 106 0.9 <br /> Xylenes 101 406 4.8 <br /> TPH Gasoline 95 90 5.4 <br /> TPH Diesel NIA WA NIA <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTBX <2 !T& C3 <.3—ng/L <.3 Hei <.3 <br /> TPH Gasoline X50 ug/L TPH Diesel-MO NIA TRPH(418.1) NIA <br /> Lab Control Sample% Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 94 73.3 - 171 <br /> Toluene 96 73.0 - 118 <br /> Ethyl Benz 101 71.2 - lie <br /> Xylenes 79 71.0 - 120 <br /> TPH Gasoline 100 68.0 150 <br /> 0 TPH Diesel NIA NIA NIA <br /> TRPH (418.1) NIA NIA <br /> OFFICE: (209) 667.5258 FAX: (209) 667.2581 a BBS: (209) 667-4119 <br />