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rl 11 <br /> STLSubmission 2005-10-0397 ' <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geosclence- 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 10/17/2005 17 45 <br /> Conoco Phillips#08671 <br /> Site 8606 Thorton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260E <br /> Laboratory Control spike Water QC Batch#2005110121-2A.65 <br /> LCS 2005/10/21-2A 65-039 Extracted ' 0/21/2005 Analyzed 10/21/2005 18 39 <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 tert-butyl ether(MTBE) 232 25 928 65-165 20 <br /> Benzene 239 25 956 69-129 20 <br /> Toluene 241 25 964 70-130 20 <br /> Surrogates(s) <br /> 12-Dlchloroethane-d4 406 500 812 73-130 <br /> Toluene-d8 1450 500 1900 1 1 1 81-114 <br /> I <br /> Severn Trent Laboratories, Inc 10129120051235 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> Apert of Sore Tf-tPic Tel 925 484 1919 Fax 925 484 1096`www stl-ine comCA DHS ELAP#2496 Page 16 of 21 <br />