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ml STL Submission: 2005-08-0377 <br /> Gas/BTEXIMTBE 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: 08/11/2005 15:30 <br /> Conoco Philips Site#11195 <br /> Site: 16500 Louis Ave., Lathrop, California <br /> Batch QC Report <br /> Prep(s): 50306 Test(s): 8260B <br /> Matrix Spike ( MS /MSD j Water QC Batch #2005108!22-1A.68 <br /> MS/MSD Lab ID: 2005-08-0581 -023 <br /> MS: 2005108!22-1A.68-030 Extracted: 0 812 212 0 0 5 Analyzed: 081221200512:30 <br /> Dilution: 25.00 <br /> MSD: 2005108122-1A,68-056 Extracted:0812212005 Analyzed: 081221200512:56 <br /> Dilution: 25.00 <br /> NEW <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 2220 2250 1793.238 625 68.3 73.1 6.8 65-165 20 <br /> Benzene 575 590 ND 625 92.0 94.4 2.6 69-129 20 <br /> Toluene 576 610 ND 625 92.2 97.6 5.7 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 438 473 500 87.6 94.6 73-130 <br /> Toluene-d8 495 507 500 99.0 101.4 81-114 <br /> b Severn Trent Laboratories, Inc. OW2920050907 <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A OD&of seem T-1 Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com'CA DHS FLAP#2496 Page 6 of 7 <br />