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X31 <br /> Submission # 2002-06-0019 <br /> Gas/BTEXFuel Oxygenates by 8260B <br /> Gettler Ryan STL San Francisco <br /> 1220 Quarry Lane <br /> Attn Deanna Harding Pleasanton,CA 94566 <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> Project 180288 80 Received 06/03/2002 16 01 www <br /> Pro chro <br /> 1 www hromalabab com <br /> Tosco#11192 <br /> Site 1403 Country Club Blvd , Sto�ll'c&YWP#2496 <br /> .—Batch QC Report <br /> Prep(s) 50306 m Test(s) 8260F=AB <br /> � n <br /> Matrix Spike( MS 1 MSD ] Water QC Batch# 2002106106-01.27 <br /> Mw-8 » MS h _' iab ID ' --2002-06-001 9 -008 <br /> u n d <br /> MS 2002/06/06-01 27-008 Extracted 06106/2002 Analyzed` " 06106/2002 1128 <br /> Dilution f 100 <br /> MSD 2002106106-01 27-009 Extracted 06/0612002 Analyzed 06/06/2002 11-50 <br /> r Dilution - <br /> .t 1,00 <br /> Compound Cone ug IL Spk Leve ecove Limits% Fla s <br /> . MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Benzene 257 258 ND 250 1028 1032 0 4 69-129 20 <br /> Toluene 258 25 7 ND 250 1032 1028 0 4 70-130 20 <br /> Methyl tert-butyl ether 211 200 ND 25 0 844 800 5 4 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 492 487 500 984 97 5 76-114 <br /> Toluene-d8 1493 1518 1 1 500 1986 11036 1 1811-110 <br /> • <br /> 08/01/2002 15 46 STL San Francisco is part of Severn Trent Laboratories, Inc Page 17 of 17 <br />