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STLSubmission# 2003-07-0769 <br /> Gas/BTEX Fuel Oxygenates by 8260B (C6-C12) <br /> Cambna Environmental Emeryville <br /> Attn Cynthia Vasko <br /> 5900 Hollis Street, Ste A <br /> Emeryville, CA 94608 <br /> Phone (510)420-3344 Fax (510)420-9170 <br /> Project 245-0783 Received 071251200312 18 <br /> 98996184 <br /> Site 2575 Country Club Blvd Stockton <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2003108105-02 65 <br /> LCS 2003108105-02 65-028 Extracted 08/05/2003 Analyzed 08/05/2003 19 28 <br /> LCSD 2003108105-02 65-050 Extracted 08/05/2003 Analyzed 08/05/2003 19 50 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS I LCSD <br /> Benzene 286 292 25 0 1144 1168 21 69-129 20 <br /> Toluene 28 5 285 250 1140 1140 0 0 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 221 229 250 884 916 36165-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 453 481 500 906 962 76-130 <br /> Toluene-d8 527 540 500 1054 11080 78-115 <br /> Sevem Trent Laboratories, Inc 08!0612003 15 39 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton CA 94566 Page 8 of 9 <br /> A put ol3evarn Front Plc Tel 925 484 1919 Fax 925 484 1096`www stl4nc com'CA DHS FLAP#2496 <br />