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-------------- <br /> Submission M 2002-10-0555 �-I 0011101 RM <br /> Gas/BTEXFuel Oxygenates by 8260B �. <br /> San Joaquin Company, Inc. STL San Francisco <br /> Attn.: Dai Watkins 122D Quarry Lane <br /> Pleasanton,CA 94566 <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 Tel:(925)484-1919 <br /> =1 Phone: (510) 336-1772 Fax: (510) 336-9119 Fax:(925)484-1096 <br /> www.stl-inc.com <br /> =� Project: 9902-013 Received: 10/2512002 18:55 www.chromalab.com <br /> C. Navarra 7500 W. 11 th St. <br /> l ' Site: Tracy CA DHS FLAP#2496 <br /> l <br /> Batch QC Report <br /> Prep(s). 50348 Test(s):8260FAB <br /> ' Laboratory'Control Spike Water ;'.PIC,Ba hV 2002110131-01:27 <br /> LCS 2002110/31-01.27-003 Extracted: 1013112002, Analyzed:'10/31/2002 10:29 <br /> °LCSD 2002/10131,-01.27-004 Extracted: 10/31/2002 Ana.lyzed:.10/31/2002'10149 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> _ Benzene 26.2 25.8 25.0 104.8 103.2 1.5 69-129 20 <br /> Toluene 26.1 25.5 25.0 104.4 102.0 2.3 70-130 20 <br /> Methyl Cert-butyl ether(MTBE) 28.7 28.1 25.0 114.8 112.4 2.1 65-165 20 <br /> Stirrogates(s) <br /> ?. 1,2-Dichloroethane-i4 501 509 500 100.2 101.8 76-114 <br /> Toluene-d8 515 505 500 103.0 101.0 88-110 <br /> [ ? <br /> :1 <br /> 7 <br /> _) <br /> 11/04/2002 10:37 STL San Francisco is part of Severn Trent Laboratories,Inc. Page 19 of 22 <br /> y i <br />