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S$-10- -Ir Submission# 2003-10-0407 <br /> TL <br /> • Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <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 10/09/2003 1525 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado Street <br /> Batch QC Re ort <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2003110122-01.65 <br /> LCS 2003/10/22-0165-010 Extracted, 1012212003 Analyzed, 1012212003 10 10 <br /> LCSD 2003/10/22-0165-033 Extracted 10122/2003 Analyzed, 10122/2003 10.33 <br /> Compound Cone ug/L Exp Cone Recovery%8 RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> . Benzene 21 6 21 9 25 0 864 876 14 69-129 20 <br /> Toluene 240 235 250 960 94 0 21 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 221 202 25 0 884 808 9 0 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 439 465 500 878 930 76-114 <br /> Toluene-d8 499 497 500 998 99 4 88-110 <br /> Severn Trent Laboratories, Inc 01/08/2004 13 21 <br /> STL San Francisca"1220 Quarry Lane Pleasanton,CA 94566 <br /> Adan of se Trait Plc Tel 925 484 1919 Fax 925 484 1096-www stl-inc corn`CA DHS ELAP#2496 Page 12 of 14 <br />