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STLSubmission: 2005-10-0071 <br /> ffy Gas/BTEXIMTBE 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: 77CP.60004.04.0195 Received: 10/04/2005 09:45 <br /> Conoco Philips Site#11195 <br /> Site: 16500 Louis Ave, Lathrop <br /> Batch QC Report <br /> Prep(s): 5030B Test(s):82606 <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch#2005/10107-01.64 <br /> MS/MSD Lab ID: 2005-10-0099-004 <br /> MS: 2005110107-01.64-033 Extracted: 1010712005 Analyzed: 101071200510:33 <br /> Dilution: 1.00 <br /> MSD: 2005110107-01.64-054 Extracted: 10/07/2005 Analyzed: 101071200510:54 <br /> Dilution: 1.00 <br /> Compound Conc. uglL Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample uglL M5 MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 22.8 23.5 ND 25.0 91.2 94.0 3.0 65-165 20 <br /> Benzene 25.6 26.8 ND 25.0 102.4 107.2 4.6 69-129 20 <br /> Toluene 25.5 27.2 ND 25.0 102.0 108.8 6.5 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 508 505 500 101.6 101,0 73-130 <br /> Toluene-d8 536 546 1 1 500 107.2 109.2 1 81-114 <br /> Severn Trent Laboratories, Inc. 1 011 9/2005 15:46 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pad of 8—m T.n1P1c Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS FLAP#2496 Page 6 of 6 <br />