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STT Submission 2004-07-0931 <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 77CP 60004 01 6981 Received 07/30/2004 16 15 <br /> Conoco Philips Site #6981 <br /> Site 4707 Pacific Ave , Stockton, CA <br /> r <br /> BReatch QC art <br /> Prep(s) 50306 - <br /> _ Test(s) 8260E <br /> Laboratory Control,Spike <Water' + `QC Batcfi#2004108106-2113 62 <br /> ft XiEw / i � t C ✓ ,f f'i f <br /> LCS 2004108/06-2B 62-041 Extra7cted y08/06/2004 Ana lyzedP08/06/2004 17 41 <br /> LCSD 2004108106-213 62-003 Extracted 0$106/2004 Analyzed 08/06/2004 18 03 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tort-butyl ether(MTBE) 21 1 21 3 25 844 852 09 65-165 20 <br /> Benzene 265 231 25 1060 92 4 137 69-129 20 <br /> Toluene 1274 242 25 1096 96 B 124 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 511 491 S00 1022 98 2 76-130 <br /> Toluene-d8 1508 488 500 11016 1 97 6 78-115 <br /> Severn Trent Laboratories, Inc 08112!2004 10 26 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pert of Severn TMI Pk Tel 925 484 1919 Fax 925 464 1096*www stl-mc com*CA DHS ELAP#2496 Page 5 of 6 <br />