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Submission 2005-02-0795 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <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 02/24/2005 15 10 <br /> Conoco Phillips#5886 <br /> Site 2701 W March Ln , Stockton <br /> Batch QC Report n <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water 4 QC Batch#2005103109-01 07 <br /> LCS 2005103109-01 07-002 ~Extracted 03/09/2005 Analyzed 03/09/2005 16 23 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% R.PDJ Ctrl Limits% Flags <br /> LCS LCSD_ — LCS— LCSD__%- –Rec– RPD –LCS–-LCSD- <br /> Benzene 21 7 250 868 69-129 20 <br /> Toluene 245 250 980 70-130 20 <br /> Surrogates(s) <br /> 1,24Dichloroethane-d4 439 500 878 73-130 <br /> Severn Trent Laboratories, Inc 03/11/2005 15 26 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pan o1 S"em 7mn1 Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc cam'CA DHS ELAP#2496 Page 27 of 31 <br />