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TSubmissionSL # 2004-02-0500 <br /> •r <br /> w <br /> Gas/BTEXIMTBE by 8260B <br /> SECOR-Sacramento <br /> Attn Amy Draffan <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone (916) 861-0400 Fax (916) 861-0430 <br /> Project Conoco Philips Site #6981 Received 02/16/2004 16 40 <br /> Site 4704 Pacific Ave , Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2004102123-26 64 <br /> LCS 2004102123-213 64-012 Extracted 02/23/2004 Analyzed 02/23/2004 18 12 <br /> LCSD 2004102123-213 64-034 Extracted 02/23/2004 Analyzed 02/23/2004 18 34 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Lr its% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 189 192 25 756 768 1 6 65-165 20 <br /> Benzene 22 1 220 25 884 880 0 5 69-129 20 <br /> Toluene 227 230 25 908 920 1 3 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 392 393 500 784 78 6 76-114 <br /> 7oluene-d8 1477 500 500 195 4 111000 1 88-110 <br /> Severn Trent Laboratories, Inc <br /> 0212412004 1719 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> A earl or5svarn Treni Pk Tel 925 484 1919 Fax 925 484 1096*www stl-inc Com-CA DHS ELAP#2496 Page 5 of fi <br />