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STLSubmission 2004-10-0851 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience-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 10/26/2004 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado St, Stockton <br /> � Batch QC Report <br /> r Prep(s) 5030B, , Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004111102-1B 64 , <br /> v k <br /> LCS , 2004111102-1B 64-003 Extracted 11/0212004 Analyzed 1 1 10212 004°0803 <br /> LCSD _ y <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) 230 25 920 65-165 20 <br /> Benzene 229 25 916 69-129 20 <br /> Toluene 239 25 956 70-130 20 <br /> Surragates(s) <br /> 1,2-Dichloroethane-d4 458 500 916 73-130 <br /> Toluene-d8 520 500 11040 1 81-114 <br /> Severn Trent Laboratories, Inc 11108/2004 1315 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> Apart u/Se"m Tmn1 Pk Tel 925 484 1919 Fax 925 484 1 096"www stl-inc corn'CA DHS ELAP#2496 Page 20 of 24 <br />