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A <br /> STLSubmission#: 2003-04.0705 <br /> Gas1BTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 <br /> Phone (925) 551-7444 Fax (925) 551-7899 - - - - <br /> Project 180183 80 Received 04/28/2003 18 17 <br /> Tosco#01205 <br /> Site 16470 Cambridge Street <br /> Lathrop, CA <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Matrix Spike( MS 1 MSD ) Water QC Batch #2003105108-2b.64 <br /> KMW-2 >> MS Lab 1D 2003-04-0698-012 <br /> MS 2003105108-2b 64-060 Extracted 05/09/2003 Analyzed 05/09/2003 00 34 <br /> Dilution 1 00 <br /> MSD 2003105108-2b 64-061 Extracted 05/09/2003 Analyzed 05/09/2003 00 <br /> :0 <br /> Dilution 1 <br /> Compound Cone: u !L Spk Level Recoveq Lemds% Fla s <br /> MS MSD Sample u 1L M5 NISD RPD Rec RPD MS MSD <br /> Benzene 21 7 236 ND 25 868 94 4 84 69-129 20 <br /> Toluene .227 232 ND 25 90 8 928 22 70-130 20 <br /> Methyl Cert-butyl ether 290 286 ND 25 1160 1144 14 65-165 20 <br /> Surrogare(s) <br /> 1 2-Dichloroethane-d4 542 1531 500 1084 1062 76-114 <br /> Toluene-d8 488 486 1 1 500 1975 1972 88-110 <br /> • <br />-- -- Severn-Trent Laboratories Jnc-- — — —-— -- — — -- -- — -- — -0511312003 12 07— <br /> STL San Francisco' 1220 Duerry Lane Pleasanton CA 94566 <br /> A oen V Severn rmm Pic Tel 925 484 1919 Fax 925 484 1096`www stl-inc com'CA DHS E LAP#2496 Page 26 of 27 <br />