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V <br /> Submission #: 2002-10-0036 <br /> mg <br /> , <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> �. Gettler Ryan STL San Francisco <br /> Attn Deanna Harding Plea Quarry Lane <br /> Pleasanton CA 94566 <br /> 6747 Sierra Court Suite J <br /> Dobkin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> www sti-Inc com <br /> Project 180138 80 Received 10/0112002 14 10 www chromalab com <br /> Tosca#6981 <br /> Site 4707 Pacific Avenue CA DHS ELAN 2496 <br /> Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260FAS <br /> Matrix Spike ( MS 1 MSD) Water QC Batch #2002110107-02 62 <br /> VW-3 » MS Lab ID 2002-10-0036- 001 <br /> MS 2002110107-02 62-017 Extracted 10/0712002 Analyzed 10/07/2002 2317 <br /> Dilution 100 <br /> MSD 2002110107-02 62-039' Extracted 10/07/2002 Analyzed 10/07/2002 23 39 <br /> Dilution 100 <br /> . Compound Conc uglL Spk Level ecove ry Limits% Fleas <br /> MS MSD Sample ug/L MS MSD RPD Ret RPD MS MSD <br /> Benzene 270 254 ND 250 1080 1016 61 69-129 20 <br /> Toluene 278 265 ND 25 0 1112 1060 48 70-130 20 <br /> Methyl tert-butyl ether 283 253 ND 250 1132 1012 112 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethene-d4 536 490 500 1072 98 0 76-114 <br /> Toluene-d8 1510 1490 1 1 500 101 9 1979 1 88-110 <br /> 1010812002 10 39 STL San Francisco is part of Severn Trent Laboratories, Inc Page 7 of 8 <br />