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Srr,T Submission# 2003-11_0832 <br /> • GasIBTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geosaence <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine,CA 92718 <br /> Phone (949)341-7440 Fax (949)753-0111 <br /> Project 41050001 FA20 Received 11/17/2003 16 46 <br /> Conoco Phillips#08671 <br /> Site 8606 Thornton Rd , Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 82608 <br /> Laboratory Control Spike Water QC Batch#2003191124-1A 65 <br /> LCS 2003111124-1A 65-040 Extracted 11/24/2003 Analyzed 11/24/2003 10 40 <br /> LCSD 2003/11124-1A 65-002 Extracted 11/24/2003 Analyzed 11/24/2003 11 02 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> • Methyl tert-butyl ether(MTBE) 205 230 25 820 920 115 65-165 20 <br /> Benzene 21 8 21 3 25 87 2 852 2 3 69-129 20 <br /> Toluene 21 6 220 25 86 4 88 0 1 8 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 454 501 500 908 1002 76-114 <br /> Toluene-d8 475 471 500 1950 1942 88-110 <br /> Severn Trent Laboratories, Inc 12101/2003 19 03 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> AW.fS-T-*We Tel 925 484 1919 Fax 925 484 1096'www stl-inc com'CA OHS ELAP#2496 Page 10 of 11 <br />