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LM �r Submission 2005-04-0610 <br /> S TL <br /> GasIBTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Inane, CA 92718 - - <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Protect 41050001 FA20 Received 04/19/2005 15 55 <br /> Conoco Phillips 408671 <br /> Site 8606 Thornton Rd , Stockton <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 8260E <br /> Laboratory Control Spike Water QC Batch#2005105102-2A 68 <br /> LCS 2005/05!02-2A,68-012 Extracted 0510212005 Analyzed 05/0212005 19 12 <br /> LCS0 <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) 22 9 25 91 6 65-165 20 <br /> Benzene 230 25 92 0 69-129 20 <br /> Toluene 246 25 98 4 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichlaroethane-d4 442 500 884 73-130 <br /> Toluene-d8 473 500 946 81-114 <br /> Severn Trent Laboratories Inc 05/03/2005 1449 <br /> STL San Francisco`1220 Quarry Lane Pleasanton CA 94566 <br /> Aped of S—m Trent Plc Tel 925 484 1919 Fax 925 484 1096"www s8-inc corn'CA DHS FLAP#2496 Page 19 of 24 <br />