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STL Submission, 2005-01-0034 <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 410500011FA20 Received 01/03/2005 14 00 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave. Stockton <br /> Ratch QC Report <br /> Prep(s) 50308 Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#20051011064A 64 <br /> LGS 2005101106-2A 64;020 Extracted 01106/2005 Analyzed 01/06/2005 17,20 <br /> LCSD <br /> Compound Cone ug/L Exp Cone Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS I LCSD <br /> Methyl tert-butyl other(MTBE) 240 25 960 65-165 20 <br /> Benzene 231 25 924 69-129 20 <br /> Toluene 233 25 93.2 70-130 20 <br /> Surmgates(s) <br /> 1,2-Dichloroethane-d4 513 500 1026 73-130 <br /> Toluene-d6 1457 1 1500 1914 81-114 <br /> Sevem Trent Laboratories, Inc 01117/20051331 <br /> STL San Francisco•1220 Quarry Lane Pleasanton,CA 944566 <br /> R P.rtasw.m rnN Tell 925 4841919 Fax 926 4841086'www s%-Inc com'CA DHS FLAP#2496 Page 20 of 27 <br />