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STLGasIBTEX Fuel Oxygenates by 82608 Submission 2005-05-0813 <br /> TRC Alton Geoscience- Irvine <br /> Attn Anau Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Project 41050001 FA20 Received 05/31/2005 16 13 <br /> Conoco Phillips# 11 192 <br /> Site 1403 Country Club Blvd, Stockton <br /> - Batch QC Report _ <br /> Prep(s) 56013 d -m� - r `m Test(s) 8260B r <br /> Laboratory Control Spike r �� Water QC Batch#2005106110-2A 64 <br /> r <br /> LCS 2005106110-2A 64-000 „£ Extracted 06/10/2005 r -Analyzed 06/10/2005 19 00 <br /> LCSD <br /> Compound Conc uglL Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 233 25 932 65-165 20 <br /> Benzene 221 25 88 4 69-129 20 <br /> Toluene 244 25 97 6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 543 500 1086 73-130 <br /> Toluene-d8 558 500 111 6 1 81-114 <br /> s <br /> Severn Trent Laboratories, Inc 06/20/2405 18 37 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 <br /> A Part of se-m Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com'CA DHS ELAP#2496 Page 24 of 32 <br />