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ME S TL Submission#: 2003-08-0648 <br /> Gas/BTEX Fuel Oxygenates by 8260B (C6-C12) <br /> Cambria Environmental Sonoma <br /> Attn.: Joe Neely <br /> 270 Perkins Street <br /> Sonoma, Ca 95476 <br /> Phone: (707)933-2361 Fax: (707)935-6649 <br /> Project: 245-0797 Received: 08/21/2003 14:50 <br /> 98996181 <br /> Site: 2494 E. Fremont Street, Stockton <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260FAB <br /> Laboratory Control Spike Water QC Batch#2003/08/25-02.64 <br /> LCS 2003/08/25-02.64-042 Extracted: 08/25/2003 Analyzed: 08/25/2003 20:42 <br /> LCSD 2003/08/25-02.64-004 Extracted: 08/25/2003 Analyzed: 08/25/2003 21:04 <br /> Compound Conc. ug/L Exp.Conc. Recovery % 1RPD1 Ctrl.Limits % Flags <br /> LCS LCSD LCS LCSD I % I Rec. RPD LCS LCSD <br /> Benzene 26.9 26.7 25.0 107.6 106.8 0.7 69-129 20 <br /> Toluene 28.0 26.3 25.0 112.0 105.2 6.3 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 28.0 26.9 25.0 112.0 107.6 4.0 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 498 490 500 99.6 98.0 76-130 <br /> Toluene-d8 490 481 1500 198.0 96.2 78-115 <br /> Severn Trent Laboratories, Inc. 08/26/200310:43 <br /> STL San Francisco•1220 Quarry Lane,Pleasanton,CA 94566 <br /> a penws Tmt nc Tel 925 484 1919 Fax 925 484 1096'w .stl-inacom'CA DHS ELAP#2496 Page 4 of 5 <br />