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SZISherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> P.O. BOX 937 <br /> } C O R p o R A r r o nr HILMAR,CALIFORNIA 95324 <br /> 07/03/97 QUALITY CONTROL REPORT DHS Certification #1400 <br /> Volatile Analyses Nancy Biedenweg, Lab Director <br /> Client: DEL-TECH Date Received: 06/30/97 <br /> 10624 OLIVE AVE Date Started-, : 0'7/01/97 <br /> OAKDALE, CA 95361 Date Complete: 07/03/97 <br /> ATTN: DON LIGHT <br /> Lab Report #: H7063004 Lab Sample #s PH7062326-2332 <br /> Lineari Check: <br /> STEX Benzene 0,9997 TPH Gasoline 0.9997 <br /> Toluene 0.9999 TPH Diesel N/A <br /> Ethyl Benzene 0.9999 Motor Oil N/A <br /> Xylenes 0.9999 TRPH (418.1) N/A <br /> MTBE N/A <br /> Std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 104 92 99 102 <br /> TPH Gasoline 104 TPN Diesel N/A <br /> TRPH (418.1) NIA TPH Motor Oil N/A <br /> Matrix Spike Recoveries MSD RPD <br /> MTBE N/A N/A ERR <br /> BTEX Benzene 94.0 109.0 14.0 <br /> Toluene 86.0 98.0 4.0 <br /> Ethyl Benzene 95.0 90.0 5.0 <br /> Xylenes 92.0 95.0 0.0 <br /> TPH Gasoline 114.0 98.0 6.0 <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 N/A <.3 u L <.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 Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 88 37.0 - 151.0 <br /> Toluene 96 47.0 - 150.0 <br /> Ethyl Benz 98 36.9 - 102.0 <br /> Xylenes 101 42.7 * 137.9 <br /> TPH Gasoline 114. 35.0 - 130.1 <br /> TPH Diesel N/A 45.1 - 135.2 <br /> TRPH (418.1) N/A N/A <br /> OFFICE: (209) 667-5258 FAX: (209) 667-2581 . BBS: (209) 667-4119 <br /> RECE.t'd ::�:: - <br />