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Submission # 2002-06-0146 _ <br /> Gas/BTEXFue! Oxygenates by 8260B <br /> Ge#ler Ryart <br /> STL San Francisc <br /> Attn Deanna Harding 1220 Quarry Lan <br /> 6747 Sierra Court Suite J <br /> Pleasanton,CA 9 <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> Project 69811 Received 06/10/2002 16 41 www sti-mc com - <br /> Tosco <br /> www chromalab com <br /> Site 4707 Pacific Avenue CA DHS FLAP#2496 <br /> Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50306 _ n Test(s) 8260FAB <br /> Matrix Spike( MS I MSD)' Water QC Batch#2002106112-01 27 <br /> MW-8 » MS Lab ID 2002-06-0146 -008 <br /> MS 2002106112-01 27-012 Extracted 06112/2002 Analyzed 06/12/2002 14 45 <br /> Dilution 100 <br /> MSD 2002106112-01 27-013 Extracted 06112/2002 Analyzed ° 06/12/2002 15 07 <br /> a <br /> Dilution - 100 <br /> Compound Conc uglL S k Leve ecove Limits% Flags <br /> MS MSD Sample u /L I MS MSD RPD Rec RPD MS MS <br /> Benzene 240 24 5 NO 250 96 0 980 21 69-129 20 <br /> Toluene 247 25 2 NO 250 988 1008 2 0 70-130 20 <br /> Methyl tert-butyl ether 197 20 0 NO 250 768 800 1 5 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 515 510 500 1030 1019 76-114 <br /> Toluene-d8 1505 1516 500 1010 1032 88-110 <br /> 08/01/2002 15 57 STL San Francisco is part of Severn Trent Laboratories Inc Page 25 of 26 <br />