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S� Submission#- 2003-07-0859 <br /> W ww 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 /> Protect 180238 80 Received 07/29/2003 10 15 <br /> Conoco #4409 <br /> Site 1502 N EI Dorado St , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch #2003108108-1D 64 <br /> LCS 2003108108-1 D 64-039 Extracted 08/08/2003 Analyzed 08/08/2003 14 39 <br /> LCSD 2003108108-1 D 64-040 Extracted 05/08/2003 Analyzed 08/08/2003 09 30 <br /> Compound Ccnc ug/L Exp Conc Recovery% RPD Ctrl Limits % Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 26 4 265 25 1056 1060 0 4 69-129 20 <br /> Toluene 26 5 246 25 1060 984 74 70-130 20 <br /> Methyl tert-butyl ether(MTBE)i 24 7 252 25 988 1008 2 0 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 536 541 500 1072 1082 76-114 <br /> Toluene-d8 502 490 500 1004 98 0 88-110 <br /> Severn Trent Laboratories, Inc 08/1212003 10 55 <br /> STL San Francisco* 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Pk <br /> Tel 925 484 1919 Fax 925 484 1096"www sti-inc corn"CA DHS ELAP#2496 Page 18 of 22 <br />