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STLSubmission#:2003-10-0962 <br /> Fuel Oxygenates by 82608 <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 <br /> Phone: (510)336-1772 Fax: (510)336-9119 t <br /> Project. 9902.013 Received: 10/27/2003 15:18 <br /> C. Navarra <br /> Site: 7500 W. 11 th St., Tracy <br /> _ Batch QC Report <br /> Prep(s); 50308 <br /> t. i Test(sj:826013 <br /> Laboratory Control Spike Water QC Batch#2003/11/04'0164 <br /> " 'LCS: 2003111104'01 64-032 Extracted ,i 1/04/2003 Analyzed 11/04/2003 09:32 <br /> ,LCSI7 2003111104-01 64-_054 Extracted: 110412003 . Analyzed 1110412003-09:54 <br /> Compound Conc. u !L Ex .Conc. Recovery% RPD Ctrl.Limits% Flags <br /> i LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 23.7 25.5 25.0 94.8 102.0 7,7 65-165 20 <br /> Benzene 22.0 26.3 25.0 88.0 105.2 17.8 69-129 20 <br /> Toluene 21.8 25.5 25.0 87.2 102.0 15.6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 501 457 500 100.2 91.4 76-114 <br /> L� Toluene-d8 456 476 500 91.2 95.2 88-110 <br /> Severn Trent Laboratories, Inc. 21/9712903 16:35 <br /> 5TL San Francisco-1220 Quarry Lane,Pleasanton,CA 94566 <br /> A,an 0 S.—nem vm Tel 925 484 1919 Fax 925 484 1096'vwwv.stl-ino.com`CA DHS ELAP#2496 Page 15 of 16 , <br /> N <br />