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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 /> 04/09/98 QUALITY CONTROL REPORT DHS Certification #1400 <br /> Volatile Analyses Nancy Biedenweg, Lab Director <br /> Client DEL-TECH Date Received 04102/98 <br /> 10624 OLIVE AVE Date Started 04/07/98 <br /> OAKDALE, CA 95361 Date Complete 04/08198 <br /> ATTN DON LIGHT <br /> Lab Report# H8040201 Lab Sample#s PH8040035-41 <br /> Lineartty Check <br /> BTEX Benzene 09998 TPH Gasoline 09998 <br /> Toluene 09994 TPH Diesel NIA <br /> Ethyl Benzene 09992 Motor Oil NIA <br /> Xylenes 09996 TRPH (418 1) NIA <br /> MTBE NIA <br /> Std % Repeatability V, CE3E Benzene Toluene Eth Benz Xylenes <br /> BTEX _NIA 99 97 102 99 <br /> TPH Gasoline 97 TPH Diesel NIA <br /> TRPH (418 1) R1A TPH Motor Oil NIA <br /> Matrix Spike Recoveries ;,IS MSD RPD <br /> MTBE lr'°, NIA ERR <br /> BTEX Benzene 0 970 2 0 <br /> Tolucne :Ib 0 1000 51 <br /> Ethyl Benzene Spike insignificant relative to sample concentration ERR <br /> Xylenes Spi'.e insignificant relative to sample concentration ERR <br /> TPH Gasoline Sm t� insignificant relative to sample concentration ERR <br /> TPH Diesc.i N1% NIA ERR <br /> NIA <br /> Method Blank Y I BE Benzene Toluene Eth Benz Xylenes <br /> BTEY, 1 1/A <3 ua < 3 uyj < 3 u < 3 <br /> TPH Gasoline <5() ,&L TPH Diesel/MO NIA TRPH(4181) NIA <br /> Lab Control Sample % Recove� EPA Performance Acceptance Range <br /> BTEX Benzene 92 746 - 126 0 <br /> Toluene 91 707 - 118 0 <br /> Ethyl Benz sU 708 - 1190 <br /> Xylenes 99 746 - 1160 <br /> TPH Gasoline 68 679 - 1500 <br /> TPH Diesel 1; 41 1 - 1210 <br /> TRPH WR 11 1.11A NIA <br /> OFFICE (209) 667 52E3 FAX (209) 667-2581 • BBS (209) 667-4119 <br />