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i <br /> Submission 2005-07-0027 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> SECOR-Sacramento <br /> Attn Kimber Collins <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 0192 Received 06/30/2005 16 00 <br /> Conoco Philips Site# 11192 <br /> Site 1403 Country Club Dr , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Matrix Spike( MS 1 MSD ) Water QC Batch#2005107!09-2B 68 <br /> MS/MSD Lab ID 2005-07-0031 -004 <br /> MS 2005107109-2B 68-050 Extracted 07/09/2005 Analyzed 07/09/2005 20 50 <br /> Dilution 2000 <br /> MSD 2005107/09-213 68-016 Extracted 07/09/2005 Analyzed 07/09/2005 21 16 <br /> Dilution 2000 <br /> Compound Conc ug 1L S k Leve Recove % Limits% Fla s <br /> MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 234 230 ND 500 468 460 17 65-165 20 M5 M5 <br /> Benzene 262 255 ND 500 52 4 510 27 69-129 20 M5 M5 <br /> Toluene 263 264 ND 500 526 52 8 04 70-130 20 M5 M5 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 451 447 500 903 894 73-130 <br /> Toluene-d8 507 500 500 1014 11000 1 81-114 <br /> Severn Trent Laboratories, Inc 07/15/2005 16 28 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Sevam Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-Enc cpm'CA DHS ELAP#2496 Page i 2 of 13 <br />