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STL <br /> Submission 2005-08-0231 <br /> ® <br /> Gas/BTEX Fuel Oxygenates by 8260B (C6-C12) <br /> Cambria Environmental Emeryville <br /> Attn Cynthia Vasko <br /> 5900 Hollis Street, Ste A <br /> Emeryville, CA 94608 <br /> Phone-(510)420=3344-Fax-(510)420=9170 <br /> Protect 247-0783-003 Received 08/08/2005 12 27 <br /> 98996184 <br /> Site 2575 Country Club Boulevard, Stockton <br /> Batch QC Report <br /> Preps} 5030B Test(s) 8260B <br /> Matrix Spike ( MS/ MSD } Water QC Batch#2005108117-1A 65 <br /> MS/MSD Lab ID 2005-08-0182 -001 <br /> MS 2005/08/17-1 A 65-003 Extracted 08/17/2005 Analyzed 08/17/2005 10 03 <br /> Dilution 1000 <br /> MSD 2005108/17-IA 65-028 Extracted 08/17/2005 Analyzed 08/17/2005 10 28 <br /> Dilution 1000 <br /> Compound Conc u /L Spk Level Recovery% Limits% Flags <br /> MS MSD Sample 19/1- MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 1040 1020 695 250 1380 1300 60 65-165 20 <br /> Benzene 269 294 0 682 250 _ 107 3 -117 3_ 8 9_ 69e129� 20� <br /> Toluene 269 -289 0 776 250 107 3 115 3 7 2 70-130 20T <br /> Surrogate(s) <br /> 12-Dichloroethane-d4 509 506 500 1018 1012 73-130 <br /> Toluene-d8 476 487 500 .952 .974 81-114 <br /> Severn Trent Laboratories, Inc 08/17/2005 16 37 <br /> STL San Francisco'1220 Quarry Lane Pleasanton,CA 94566 <br /> A mr,m seer„T.N M. Tel 925 484 1919 Fax 925 484 1096"www sti-inc cam'CA DHS ELAP#2496 Page 12 of 13 <br />