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Y Ott <br /> Submission 2004-11-0843 <br /> M 0 IM M STL <br /> GaslBTEX 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 /> Project 41050001 FA20 Received 11/2912004 18 20 <br /> Conoco Phillips#08671 <br /> Site 8606 Thornton Road, Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch #2004112104-2E 64 <br /> LCS 2004112104-2E 64-004 Extracted 1 210 412 0 0 4 Analyzed 12/04/2004 17 04 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl Cert-butyl ether(MTBE) 251 25 1004 65-165 20 . <br /> Benzene 24 2 25 968 69-129 20 <br /> Toluene 24 2 25 968 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dlchloroethane-d4 470 500 940 73-130 <br /> Toluene-d8 455 500 910 81-114 <br /> Severn Trent Laboratories, Inc 1 2/1 012004 17 210 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pan or S-Trent Pic Tel 925 484 1919 Fax 925 484 1096`www stl-inc com'CA DNS ELAP#2496 Page 17 of 24 <br />