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i <br /> Submission # 2004-08-0026 <br /> L S T <br /> Gas/BTEX 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 U6100 Received 08/03/2004 09 50 <br /> 6100 <br /> Site 25775 Patterson Pass Rd <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch #2004108105-1A 68 <br /> LCS 2004108105-1A 68-050 Extracted 08/05/2004 Analyzed 08/05/2004 06 50 <br /> LCSD 2004108105-1A 68-009 Extracted 08/05/2004 Analyzed 08/05/2004 07 09 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 240 24 9 25 960 996 3 7 69-129 20 <br /> . Toluene 28 0 308 25 1120 1232 9 5 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 278 276 25 1112 1104 0 7 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 457 471 500 91 4 942 72-128 <br /> Toluene-d8 502 543 500 1004 1086 80-113 <br /> Severn Trent Laboratories, Inc 08/131200412 08 <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 stl-inc com*CA DHS ELAP#2496 Page 15 of 16 <br />