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STL Submission#. 2003-08-0508 <br /> z <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 <br /> Phone (925) 551-7444 Fax (925) 551-7899 <br /> Project 180288 80 Received 08/15/2003 12 00 <br /> Conoco#11192 <br /> Site 1403 Country Club Blvd , Stockton <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch #2003108127-2C 68 <br /> LCS 2003108127-2C 68-054 Extracted 08/27/2003 Analyzed '0812712003 21 54 <br /> LCSD ' 2003/08127-2C68-014 Extracted 08/27/2003 Analyzed 08/27/2003 22 14 <br /> Compound Conc ug/L Exp Conc. Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 255 249 25 1020 996 24 69-129 20 <br /> Toluene 262 249 25 1048 996 51 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 267 258 25 1068 1032 34 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 543 525 500 1086 1050 76-114 <br /> Toluene-d8 520 509 500 1040 , 1018 88-110 <br /> Severn Trent Laboratories, Inc 09/09/2003 08 01 <br /> STL San Francisco* 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Se m Trot Plc Tel 925 4841919 Fax 925 484 1096*www stl-mc com*CA DHS ELAN 2496 Page 20 of 23 <br />