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Submission 2005-11-0986 <br /> STL <br /> s <br /> Gas/BTEX Fuel Oxygenates by 82608 (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 /> Project 247-0783-003 Received 11114120051515 <br /> 98996184 <br /> Site 2575 Country Club Boulevard, Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2005111115-1 B 65 <br /> LCS 2005111115-1 B 65-050 Extracted 11/15/2005 Analyzed 11/15/2005 06 50 <br /> LCSD 2005/11/15-1 B 65-016 Extracted 11/15/2005 Analyzed 11/15/2005 07 16 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tent-butyl ether(MTBE) 207 219 25 828 876 56 65-165 20 <br /> Benzene 233 235 25 93 2 94 0 0 9 69-129 20 <br /> Toluene 250 254 25 1000 1016 16 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 397 406 500 794 812 73-130 <br /> Toluene-d8 457 462 500 91 4 924 81-114 <br /> i <br /> Severn Trent Laboratories, Inc 1112212005 10 28 <br /> STL San Francisco* 1220 Quarry Lane,Pleasanton CA 94566 <br /> A peA 0 S—em Trent Rc Tel 925 484 1919 Fax 925 484 1096*www stl-inc corn*CA DHS ELAP#2496 Page 11 of 16 <br />