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i <br /> • STL Submission 2005-01-0034 <br /> Gas/BTEK Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine,CA 92718 <br /> Phone (949)341-7440 Fax (949)753-0111 <br /> Protect 41050001/FA20 Received 011031200514 00 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave,Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2005/011062A 66 <br /> LCS 2005/01/06-2A66-007 Extracted 01/06/2005 Analyzed 01/06/20051907 <br /> LCSD <br /> Compound Cone ug/L Exp Cone Recovery% RPD Ctrl Llmlts% Flags <br /> LC LCSD LCS I LCSD % Rec RPD LCS LCSD <br /> Methyl tort-butyl ether(MTBE) 18 7 25 748 65-165 20 <br /> Benzene 194 25 776 69-129 20 <br /> Toluene 243 25 972 70-130 20 <br /> surrogates(s) <br /> 1,2-Dichloroethane-d4 390 500 78 0 73-130 <br /> Toluene-d8 468 1 1500 1936 81-114 <br /> Seven! Trent Laboratories, Inc 011171200513 31 <br /> STL San Francisco•1220 Quarry Lane,Pleasanton,CA 94566 <br /> A Wet 5mm Tr"Pft Tei 925 454 1919 Fax 925 4841096'www sil-inc com'CA DHS EIRP#2496 Page 21 of 27 <br />