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STI L Submission 2005-09-0445 <br /> Fuel Oxygenates by 8260B <br /> Wright Environmental Services Inc <br /> Attn Jeff Downs <br /> 707 E 11th Street, #120 <br /> Tracy, CA 95376-4001 <br /> Phone (209) 833-0758 Fax (209) 832-5152 <br /> Project 050914-BCI Received 09116/2005 16 05 <br /> Mr Ed s Muffler <br /> Site 595 E 11th St , Tracy <br /> Batch QC Re ort <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2005/09124-01 64 <br /> LCS 2005/09/24-01 64-036 Extracted 09/24/2005 Analyzed 09/24/2005 09 36 <br /> LCSD <br /> i <br /> I <br /> Compound 1 Conc ug/L Exp Conc Recovery% RPD Ctrl Limits % Flags <br /> LCS LCSD LCS LCSD % Rec RPD1 LCS LCSD <br /> I <br /> . Methyl tert-butyl ether(MTBE) 226 250 904 65-165 20 <br /> Benzene 252 250 1008 69-129 20 <br /> Toluene 248 250 99 2 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 459 500 918 73-130 <br /> Toluene-d8 1543 500 1086 81-114 <br /> Severn Trent Laboratories, Inc 09/28/2005 1612 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096"www stl-one com'CA DHS ELAP#2496 Page 17 of 21 <br />