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STT Submission#: 2001-01-0606 <br /> Gas/BTEX/MTBE by 8260B <br /> SECOR-Sacramento <br /> Attn.: Amy Draffan <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone: (916) 861-0400 Fax: (916) 861-0430 <br /> Project: 11195 Received: 01/22/2004 13:30 <br /> Site: 16500 Louise, Lathrop., CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 82608 <br /> Laboratory Control Spike Water QC Batch#2004!01130-2A.64 <br /> LCS 2004!01130-2A.64-014 Extracted: 01/30/2004 Analyzed: 01/30/2004 17:14 <br /> LCSD 2004101130-2A.64-036 Extracted: 01/30/2004 Analyzed: 011301200417:36 . <br /> Compound Conc. ug/L Exp,Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 24.2 24.2 25 96.8 96.8 0.0 69-129 20 <br /> Toluene 24.7 25.2 25 98.8 100.8 2.0 70-130 20 <br /> Methyl tent-butyl ether(MTBE) 22.8 23.7 25 91.2 94.8 3.9 65-165 20 <br /> Surrogates(s) <br /> 7oluene-d8 482 479 500 96.4 95.8 88-110 <br /> 1,2-Dichloroethane-d4 456 463 500 91.2 92.6 76-114 <br /> i <br /> Severn Trent Laboratories, Inc, 021031200410:46 <br /> STL San Francisco, 1220 Quarry Lane, Pleasanton,CA 94566 <br /> Aad pof 8—r.Trent Plc Tel 925 484 1919 Fax 925 484 1096"www.stl-inc.com"CA DHS ELAP#2496 Page 6 of 8 <br />