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' STL Submission # 2004-10-0224 <br /> GasIBTEX Fuel Oxygenates by 8260B <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 /> Project BP Project#6100 Received 10/07/2004 09 30 <br /> Site 25775 Patterson Pass Rd <br /> Batch QC Report <br /> Prep(s) 5030B <br /> Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch #2004/10108-2A 66 <br /> LCS 2004/10/08-2A 66-030 Extracted 10/08/2004 Analyzed 10/08/2004 13 30 <br /> LCSD 2004/10/08-2A 66-052 Extracted 10/08/2004 <br /> Analyzed 10/08/2004 13 52 <br /> Compound Conc ug/L Exp Conc Recovery% RPD1 Ctrf Lfmits % Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 23 4 246 25 936 984 50 65-165 20 <br /> Benzene 22 7 244 25 908 976 7 2 69-129 20 <br /> Toluene 21 4 226 25 856 904 5 5 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 419 413 500 83 8 82 6 72-128 <br /> Toluene-d8 480 480 500 96 0 96 0 80-113 <br /> Severn Trent Laboratories, Inc 10/22/2004 14 42 <br /> STL San Francisco' 1220 Quarry Lane, Pleasanton,CA 94566 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096"www stf-inc com'CA DHS ELAP#2496 Page 5 of 5 <br />