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w <br /> STLSubmission 2004-08-0675 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> SECOR-Sacramento <br /> Attn Clint Harms <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone (916)861-0400 Fax (916) 861-0430 <br /> Project 77CP 60193 01 0001 /77BP 50193 02 0427 Received 08/25/2004 15 00 <br /> Conoco Philips Site#11193 <br /> Site 3202 West Hammer Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260FAB <br /> Matrix Spike ( MS/MSD ) Water QC Batch#2004/09105-1A.68 <br /> MW-1R » MS Lab ID 2004-08-0675 -001 <br /> MS 2004109105-1A 68-025 Extracted 09/05/2004 Analyzed 09/05/2004 10 25 <br /> Dilution 100 <br /> MSD 2004109105-1A 68-044 Extracted 09/05/2004 Analyzed 09/05/2004 10 44 <br /> k Dilution 100 <br /> Compound Conc a 1L Spk Leve Recove % Limits% Flacis <br /> MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Benzene 191 208 ND 25 764 83 2 85 69-129 20 <br /> Toluene 201 203 ND 25 804 81 2 10 70-130 20 <br /> Methyl tent-butyl ether 214 227 293 25 739 791 68 65-165 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 452 459 500 905 919 72-128 <br /> Toluene-d8 472 474 1 1 500 1946 1947 1 180-113 <br /> Severn Trent Laboratories, Inc 09/09120041444 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton CA 94566 <br /> A pan 01Sev6m Trent Plc Tel 926 484 1919 Fax 925 484 1096'www stl-inc com`CA DHS ELAP#2496 Page 22 of 23 <br />