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Submission##:2002-10-0555 <br /> Gas/BTEXFuel Oxygenates by 82606 <br /> San Joaquin Company, Inc. STL San Francisco <br /> Attn.: Dai Watkins 1220 Quarry Lane <br /> Pleasanton,CA 94566 <br /> .' 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 Tel:(925)484-1919 <br /> V- Phone: (510) 336-1772 Fax: (510) 336-9119 Fax:(925)484-1096 <br /> www.sti-inc.corn <br /> Project: 9902.013 Received: 10/25/200218:55 www.chromalab.com <br /> C. Navarra 7500 W. 11 th St. <br /> Site: Tracy CA DHS ELAP#2496 <br /> :,� <br /> Batch QC Report <br /> -- - - <br /> t. <br /> s Prep(s): 5030B - Test(s)::8260FAB <br /> Method Blank Water Q0.8atch#200211.0131-01:27:. <br /> j MB: 2002110131-01.27-005 Date Extracted:10131/2002 11:12 <br /> Compound Conc. RL Unit Analyzed Flag <br /> _s Gasoline ND 50 ug/L 101311200211:12 <br /> Benzene ND 0.5 ug/L 101311200211:12 <br /> Toluene ND 0.5 ug/L 101311200211:12 <br /> !' Ethylbenzene ND 0.5 ug/L 101311200211:12 <br /> Total xylenes ND 1.0 ug/L 10131/2002 11:12 <br /> tert-Butyl alcohol (TBA) ND 5.0 ug/L 10/31/2002 11:12 <br /> Methyl tert-butyl ether(MTBE) ND 0.5 ug/L 10/31/2002 11:12 <br /> } Di-isopropyl Ether(DIPE) ND 1.0 ug/L 10131/2002 11:12 <br /> - Ethyl tert-butyl ether(ETRE) ND 0.5 ug/L 10/31/2002 11:12 <br /> tert-Amyl methyl ether(TAME) ND 0.5 ug/L 10/31/2002 11:12 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 100.3 76-114 % 10/31/2002 11-12 <br /> Toluene-d8 100.3 88-110 % 10/311200211:12 <br /> f <br /> 11/04/2002 10:37 STL San Francisco is part of Severn Trent Laboratories,Inc. Page 17 of 22 <br />