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Submission# 2002-08-0084 <br /> Fuel Oxygenates by 8260B <br /> ' Philip Services- Illinois STL San Franclsco <br /> 1220 Quarry Lane <br /> Attn Mark Milward Pleasanton CA 94566 <br /> 210 W Sand Bank Road <br /> ' Colombia, It_62236 Tel (925)484-1919 <br /> Phone (618) 281-1547 Fax (618) 281-5120 Fax (925)484-1096 <br /> www stl-inc corn <br /> Project C23484517 B00 Received 08/02/2002 18 35 www chromalab corn <br /> ' Sara Lee <br /> CA DNS ELAP#2496 <br /> Batch QC Report' Prep(s) 5o3aB Test(s) 8260B <br /> ' Laboratory Control Spike Water QC Batch# 2002108107-01 62 <br /> LCS 2002108107-01 62-042 Extracted 08/07/2002 Analyzed 08/07/2002 10 42 <br /> LCSD 2002108107-01 62-004 Extracted 08/07/2002 Analyzed 08/07/2002 11 04 <br /> ' Compound Conc ug/L Exp Conc Recovery RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 278 249 250 111 2 996 11 0 65-165 20 <br /> ' Benzene 228 254 250 91 2 1016 108 69-129 20 <br /> Toluene 253 274 250 101 2 1096 8 0 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 431 387 500 862 774 76-114 <br /> MToluene-d8 507 534 500 1014 11068 88-110 <br /> 1 <br /> I� <br /> 1 <br /> 08/08/2002 12 05 STL San Francisco is part of Severn Trent Laboratories Inc Page 15 of 17 <br />