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STLSubmissions 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 Re ort <br /> -Preps) 50308 Test(s) 8260FAB <br /> Laboratory Control,Soike Water QC Batch#2004/11101-2A 66 <br /> LCS , 2004/111!011-2A66-002 Extracted 11/01/2004 Analyzed 11/01/2004 i7,02 <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) 288 25 1152 65-165 20 <br /> Benzene 294 25 1176 69-129 20 <br /> • Toluene 283 25 1132 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 420 500 840 73-130 <br /> Toluene-d8 1482 1 1500 1964 1 1 181-1141 <br /> Severn Trent Laboratories, Inc <br /> 11/08/2004 1315 <br /> • STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A P,n or Se T.m Pk Tel 925 484 1919 Fax 925 484 1096'www stl-mc com`CA DHS FLAP#2496 Page 18 of 24 <br />