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®® STL Submission: 2005-07-0098 <br /> Gas/BTEX/MTBE by 82608 <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: 07/05/2005 14:48 <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 !MSD ) Water QC Batch#2005107/13-26.68 <br /> MS/MSD Lab ID: 2005-07-0220-001 <br /> MS: 2005107113-2B.68-036 Extracted: 07/13/2005 Analyzed: 07/13/2005 22:36 <br /> Dilution: 20.00 <br /> MSD: 2005107113-2B.68-002 Extracted: 07/13/2005 Analyzed: 07/13/2005 23:02 <br /> Dilution: 20.00 <br /> a,- <br /> Compound Conc. ug/L Spk,Level Recovery% Limits% Flags <br /> MS MSD Sample ug/L MS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 606 633 113 500 98.6 104.0 5.3 65-165 20 <br /> Benzene 542 547 ND 500 108.4 109.4 0.9 69-129 20 <br /> Toluene 547 542 ND 500 109.4 108.4 0.9 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 394 389 500 78.8 77.8 73-130 <br /> Toluene-d8 I 506 497 1 1 - 500 1 101.3 99.5 1 81-114 <br /> Severn Trent Laboratories, Inc. 07115/200512:34 <br /> STL San Francisco*1220 Quarry Lane, Pleasanton,CA 94566 <br /> A„a„�fSe­T-1 P,. Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP##2496 Page 5 of 5 <br />