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�® STL Submission 2005-09-0445 <br /> Fuel Oxygenates by 82608 <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-BC1 Received 09/16/2005 16 05 <br /> Mr Ed s Muffler <br /> Site 595 E 11th St , Tracy <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260E <br /> Matrix Spike ( MS I MSD ] Water QC Batch# 2005109122-01 64 <br /> MS/MSD Lab ID 2005-09-0513 -001 <br /> MS 2005109122-01 64-017 Extracted 09/22/2005 Analyzed 09/22/2005 11 17 <br /> Dilution 5000 <br /> MSD 2005109122-01 64-038 Extracted 09/22/2005 Analyzed 09/22/2005 11 38 <br /> 0 Dilution 5000 <br /> Compound Conc u /L Spk Level Recovery% Limits% Flags <br /> MS MSD Sample ug/L MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 13100 13500 12600 1250 400 720 571 65-165 20 M5 RI <br /> Benzene 1440 1280 2 52 1250 1150 1022 118 69-129 20 <br /> Toluene 1450 1250 4 87 1250 1156 99 6 14 9 70-130 20 <br /> surmgaws) <br /> 12-Dichloroethane-d4 509 506 500 1018 1012 73-130 <br /> Toluene-d8 542 534 500 1084 11068 1 81-114 <br /> • Severn Trent Laboratories, Inc 09128/20051612 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> Apart al S—n 7reni Plc Tel 925 484 1919 Fax 925 484 1096'www stl inc com"CA DHS ELAP#2496 Page 19 of 21 <br />