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Submission # 2804-01-0263 <br /> STLr <br /> Gas/BTEX/MTBE 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#6981 Received 01/09/2004 17 10 <br /> Site 4704 Pacific Ave , Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 82606 <br /> Laboratory Control Spike Water QC Batch#2004101119-2A 66 <br /> LCS 2004101119-2A 66-007 Extracted 01/19/2004 Analyzed 01/19/2004 1$ 07 <br /> LCSD 2004101119-2A 66-031 Extracted 01/19/2004 Analyzed 01/19/2004 18 31 <br /> Compound Conc ug/L Exp Conc Recovery % RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPDJ LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 209 205 25 836 820 1 9 65-165 20 <br /> Benzene 21 5 21 7 25 860 86 8 0 9 69-129 20 <br /> Toluene 202 207 25 808 828 2 4 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 479 483 500 958 966 76-114 <br /> Toluene-d8 466 473 500 193 2 194 6 88-110 <br /> Severn Trent Laboratories, Inc 41/20/2004 10 <br /> 47 <br /> STI_ San Francisco` 1220 Quarry Lane,Pleasanton CA 94566 <br /> A part of Severn Tran)Plc Tel 925 484 1919 Fax 925 484 1096'www st]-inc corn'CA DHS FLAP#2496 Page 5 of 6 <br />