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N <br /> STLSubmission: 2005-03-0104 <br /> 9 <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: Conoco Philips Site# 11195 Received: 03/02/2005 16:00 <br /> Site: 16500 S. Harland Rd. Lathrop, CA <br /> 4; <br /> Batch QC Report <br /> Prep(s): 5030B Test(s):82606 <br /> F; <br /> F, <br /> Matrix Spike(MS I MSD] Water QC Batch#2005!03114-2B.68 <br /> 4; <br /> MS/MSD Lab ID: 2005-03-0042-004 <br /> MS: 2005103114-2B.68-001 Extracted:03/14/2005 Analyzed: 03/14/2005 20:01 <br /> Dilution: 1.00 <br /> MSD: 2005!03114-2B.68-018 Extracted:03/14/2005 Analyzed: 03/14/2005 20:18 <br /> Dilution: 1.00 <br /> Cone. u !L 5 k.Leve Recovery% Limits% Flags <br /> ;.. Compound <br /> MS MSD Sample ug/L MS I MSD I RPD Ree. RPD MS MSD <br /> Methyl tert-butyl ether 31.4 28.7 ND 25 125.6 114.8 9.0 65-165 20 <br /> Benzene 29.3 26.5 ND 25 117.2 106.0 10.0 69-129 20 <br /> Toluene 30.6 27.1 ND 25 122.4 108.4 12.1 70-130 20 <br /> r <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 446 462 500 89.2 92.4 73-130 F <br /> Toluene-de 508 487 500 101.6 197.4 1 81-114 <br /> i <br /> r <br /> r <br /> r <br /> ; <br /> r <br /> Severn Trent Laboratories, Inc. 03117/2005 13:14 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> Page 9 of 9 <br /> A Pan ofS-V-m Trent Plc Tel 925 484 1919 Fax 925 484 1 096'www.stl-inc.com`CA DHS FLAP#2496 <br /> b <br />