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o STL <br /> Submission 2005-03-0034 <br /> Fuel Oxygenates by 8260B <br /> Wright Environmental Services Inc <br /> Attn Marla Reid <br /> 67 E 10th Street <br /> Tracy, CA 95376-4001 <br /> Phone (209) 833-0758 Fax (209) 832-5152 <br /> Project Mr Ed s Muffler Received 0310112005 16 30 <br /> BTS#050228-BP 1 <br /> Site 595E 11th St , Tracy,CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch #2005103111-01 64 <br /> LCS 2005/03111-01 64-008 Extracted 03/11/2005 Analyzed 03111/2005 08 08 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 261 250 104 4 65-165 20 <br /> Benzene 259 250 1036 69-129 20 <br /> Toluene 272 250 1088 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 476 500 952 73-130 <br /> Toluene-d8 497 500 1994 81-114 <br /> Severn Trent Laboratories, Inc 03/15/2005 09 40 <br /> STL San Francisco'1220 Quarry Lane Pleasanton,CA 94566 <br /> A Pmt of Se"n,Trent Pk Tel 925 484 1919 Fax 925 484 11006"www sti-inc corn'CA DHS FLAP*2496 Page 15 of 1 a <br />