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STT Submission: 2005-06-0133 <br /> 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: 06/06/2005 15:13 <br /> Conoco Philips Site#11195 <br /> Site: 16500 Louis Ave., Lathrop, California <br /> Batch QC Report <br /> Prep(s): 5030B Test(s):8260B <br /> Matrix Spike( MS 1 MSD ) Water QC Batch#2005106116-2A.62 <br /> MS/MSD Lab ID: 2005-06-0317-001 <br /> MS: 2005/06/16-2A.62-036 Extracted:06/16/2005 Analyzed: 06/16/2005 20:36 <br /> Dilution: 1.00 <br /> MSD: 2005106116-2A.62-002 Extracted: 06116/2005 Analyzed: 06/16/2005 21:02 <br /> = Dilution: 1.00 <br /> Compound Conc. ug/L Spk.Level Recove % Limits% Flags <br /> MS MSD Sample u 1L MS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 25.0 21.7 ND 25 100.0 86.8 14.1 65-165 20 <br /> Benzene 27,6 21.5 ND 25 110.4 86.0 24.6 69-129 20 R4 <br /> Toluene 29.7 24.0 ND 25 118.8 96.0 21.2 70-130 20 R4 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 503 522 500 100.7 104.4 73-130 <br /> Toluene-d8 507 512 500 101.5 102.4 1 81-114 <br /> e <br /> i <br /> 4 <br /> i <br /> i <br /> i <br /> i <br /> 4 <br /> ii <br /> 061201200517:45 <br /> Severn Trent Laboratories, Inc. <br /> i <br /> ST San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 s <br /> Apart of nevem Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com"CA QHS ELAP#2496 Page 6 of 7 <br /> k <br /> k <br />