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STL <br /> Submission 2005-01-0750 <br /> • <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience- Irvine <br /> Attn Antu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Protect 410500011FA20 Received 01/27/2005 14 55 <br /> Conoco Phillips#08671 <br /> Site 8606 Thornton Rd , Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2005102109-1A 64 <br /> LCS 2005102109-1A 64-035 Extracted 02/09/2005 Analyzed 02/09/2005 07 35 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 25 2 25 1008 65-165 20 <br /> Benzene 258 25 1032 69-129 20 <br /> Toluene 267 25 1068 70-130 20 <br /> Surregates(s) <br /> 1,2-Dichloroethane-d4 444 500 888 73-130 <br /> Toluene-d8 531 500 11062 1 1 81-114 <br /> • <br /> Severn Trent Laboratories, Inc 02J11/200511 55 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton CA 94566 <br /> Apel of S. mT,a,nt pie Tel 925 494 1919 Fax 925 484 1096*www stl-inc com`CA DHS ELAP#2496 Page 16 of 21 <br />