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r. STL <br /> Submission# 2003-08-0740 <br /> a <br /> GasBTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan <br /> Attn Dave Vossler <br /> 1364 North McDowell Road <br /> Petaluma, CA 94954 <br /> Phone (707)789-3252 Fax (707)789-3218 <br /> Project 140124 08 Received 08/22/2003 17 30 <br /> 6981 <br /> Site 4707 Pacific Ave , Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch #2003109103-2A 64 <br /> LCS 2003109103-2A 64-015 Extracted 09/03/2003 Analyzed 09/03/2003 18 15 <br /> LCSD 2003109103-2A 64-037 Extracted 09/03/2003 Analyzed 09/03/2003 18 37 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits%I Flags <br /> LCS LCSD LCS LCSD % Rec RPD1 LCS LCSD <br /> Benzene 233 245 25 932 98 0 M76-114 20 <br /> Toluene 251 26 6 25 1004 1064 20 <br /> Methyl tert-butyl ether(MTBE) 247 241 25 988 964 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 477 454 500 954 908Toluene-d8 489 504 500 97 8 1008 <br /> Severn Trent Laboratories, Inc 09104/20031410 <br /> STL San Francisco*1220 Quarry Lane, Pleasanton CA 94566 <br /> A put IX Severn Tmnt Plc Tel 925 484 1919 Fax 925 484 1096*www sti-enc corn'CA DHS FLAP#2496 Page 7 of 7 <br />