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)l Sherwood <br /> LANDER AVENUE <br /> 8071 NORTH LAN <br /> Lads P D SOX 937 <br /> ZC O R P O R A T 1 0 nl HILMAR CALIFORNIA95324 <br /> 12/09/97 QUALITY CONTROL REPORT DHS Certification#1400 <br /> Volatile Analyses Nancy Biedenweg, Lab Director <br /> Client DEL-TECH Date Received 12108197 <br /> 10624 OLIVE AVE Date Started 12106197 <br /> OAKDALE, CA 95361 Date Complete 12/09/97 <br /> ATTN DON LIGHT <br /> Lab Report It H7120801 Lab Sample#s PH7120530-540 <br /> Linearity Check <br /> BTEX Benzene 09998 TPH Gasoline 09999 <br /> Toluene 09998 TPH Diesel NIA <br /> Ethyl Benzene 09999 Motor Oil NIA <br /> Xylenes 09999 TRPH (418 1) NIA <br /> MTBE NIA <br /> Std % Re atabii MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 98 102 108 106 <br /> TPH Gasoline 90 TPH Diesel NIA <br /> TRPH (418 1) NIA TPH Motor Oil NIA <br /> • <br /> Matrix Spike Recovenes MS MSD RPD <br /> MTBE NIA NIA ERR <br /> BTEX Benzene Spike insignificant relative to sample concentration ERR <br /> Toluene 103 0 99 0 4 0 <br /> Ethyl Benzene 1030 970 6 0 <br /> Xylenes Spike Insignificant relative to sample concentration ERR <br /> TPH Gasoline 970 840 14 4 <br /> TPH Diesel NIA NIA <br /> TRPH 4181 NIA <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA < 3 < 3 < 3 <.3 u <br /> TPH Gasoline <50 TPH Diesel/MO NIA TRPH(418 1) NIA <br /> Lab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 97 746 - 1260 <br /> Toluene 95 707 - 1180 <br /> Ethyl Benz 103 708 - 1190 <br /> Xylenes 100 74 6 1160 <br /> TPH Gasoline 118 652 - 1460 <br /> TPH Diesel NIA NIA - NIA <br /> TRPH (418 1) NIA NIA <br /> OFFICE (209) 667 5258 o FAX (209) 667 2581 a BBS (209) 667 4119 <br />