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p <br /> .M STL <br /> Submission # 2004-09-0240 <br /> GasIBTEX Fuel Oxygenates by 82606 <br /> Stratus Environmental Inc <br /> Attn Jay Johnson <br /> 3330 Cameron Park Drive, Suite 550 <br /> Cameron Park, CA 95682 <br /> Phone (530) 676-6007 Fax (530) 676-6005 <br /> Protect BP Facility No 6100 Received 09/09/2004 09 40 <br /> Site Petterson Pass Rd <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch # 2004109111-1 E 68 <br /> LCS 2004109/11-1 E 68-055 Extracted 09/11/2004 Analyzed 09/11/2004 08 55 <br /> LCSD 2004109/11-1E 68-014 Extracted 09/11/2004 Analyzed 09/11/2004 09 14 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 233 277 25 932 1108 173 65-165 20 <br /> Benzene 225 270 25 900 1080 182 69-129 20 <br /> . Toluene 207 245 25 828 980 168 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 508 501 500 101 6 1002 72-128 <br /> Toluene-d8 471 499 500 94 2 998 80-113 <br /> Severn Trent Laboratories, Inc 09/21/2004 16 09 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton CA 94566 <br /> Apart of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096*www stl-inc com*CA DNS ELAP#2496 Page 15 of 16 <br />