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STLSubmission 2004-07-0629 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> SECOR-Sacramento <br /> Attn Gavan Heinrich <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone (916) 861-0400 Fax (916) 861-0430 <br /> Project 77CP 60193 04 Received 07/21/2004 12 00 <br /> Conoco Philips Site#11193 <br /> Site 3202 West Hammer Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004107130-1 E 64 <br /> LCS 2004107130-1 E 64-055 Extracted 07/30/2004 Analyzed 07/30/2004 07 55 <br /> LCSD 2004107130-1 E 64-018 Extracted 07/30/2004 Analyzed 07/30/2004 08 18 <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) 249 277 25 996 1108 106 65-165 20 <br /> Benzene 247 247 25 988 988 00 69-129 20 <br /> Toluene 279 28 8 25 111 6 1152 32 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 501 513 500 1002 1026 72-128 <br /> Toluene-d8 1541 535 1500 11082 11070 1 80-113 <br /> Severn Trent Laboratories, Inc 09/08/2004 11 03 <br /> STL San Francisco`1220 Quarry Lane Pleasanton,CA 94566 <br /> A part of Swam T—t Pk Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn"CA DHS ELAP#2496 Page 11 of 13 <br />