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ry (w <br /> STLSubmrlssion# 2003-08-0193 <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 180137 80 Received 08106/2003 16 00 <br /> Conoco#5886 <br /> Site 2701 West March Lane, Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> 2 <br /> Laboratory Control Spike Water QC Batch #2003/08/15-2A.66 <br /> LCS 2003108115-2A 66-008 Extracted 08/1512003 Anayzed 08/15/2003 21 08 <br /> LCSD 2003108115-2A 66-031 Extracted 08/15/2003 Ana yzed 08/15/200321 31 <br /> CompoundConc ug/L Exp Conc Recovery% JRPDCtrl Limits% Flags <br /> LCS I LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 307 27 8 25 1228 1112 9 9 69-129 20 <br /> Toluene 297 25 6 25 1188 1024 148 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 29 2 25 3 25 116 8 1012 143 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 528 505 500 1056 101 0 76-114 <br /> Toluene-d8 525 517 500 1050 1034 88-110 <br /> 08/18/2003 16 45 <br /> Severn Trent Laboratories, Inc <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton, CA 94566 page 26 of 32 <br /> A part of Sewrn Trent Plc Tel 925 484 1919 Fax 925 484 1096-www sll-inc corn'CA DHS ELAN 2496 <br />