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®� <br /> STL <br /> Submission 2445-03-0930 <br /> Gas/BTEX Fuel Oxygenates by 82608 (C6-Cl2) <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 03/30/2005 12 55 <br /> 98996184 <br /> Site 2575 Country Club Boulevard, Stockton <br /> i <br /> Botch QC Report <br /> Prep(s) 5030B Test(s) 8260E <br /> Matrix Spike ( MS 1 MSD } Water QC Batch#2005104107.1 D fib <br /> MSIMSD Lab ID 2005-04-0012-001 <br /> MS 2005104107-1 D 66-057 Extracted 04/07/2005 Analyzed 04/0712005 1157 <br /> Dilution 1 00 <br /> MSD 2005104/07-1 D 66-022 Extracted 04107/2005 Analyzed 04/07/2005 12 22 <br /> 0 Dilution 100 <br /> Compound Conc ug/L k Leve Recove % Limits% Fla s <br /> MS MSD Sam le u /L MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 236 271 ND 25 944 1084 138 65-165 20 <br /> Benzene 324 338 974 25 906 962 60 69-129 20 <br /> Toluene 404 430 154 25 1000 1104 99 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 483 458 500 966 91 6 73-130 <br /> Toluene-d8 507 527 500 1014 1054 81-114 <br /> Severn Trent Laboratories, Inc 04/08/2005 14 28 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton CA 94566 Page 15 of 16 <br /> A pan d Saver„Tent Pk Tel 925 484 1919 Fax 925 484 1096'www stl-Inc com+CA DMS FLAP#2496 <br />