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ATL Submission 2004-12-0130 <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 01 6981 Received 12/01/2004 17 15 <br /> Conoco Philips Site#6981 <br /> Site 4707 Pacific Ave , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260E <br /> Matrix Spike ( MS 1 MSD } Water QC Batch#2004112105-1A 65 <br /> MS/MSD Lab ID 2004-12-0135-006 <br /> MS 2004112105-1A 65-021 Extracted 12/05/2004 Analyzed 12/05/2004 14 21 <br /> Dilution 1 00 <br /> MSD 2004112105-1A 65-046 Extracted 12/05/2004 Analyzed 12/0512004 14 46 <br /> Dilution 1 00 <br /> Compound Conc u /L S k Level Recove % Limits% Flaas <br /> MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 31 7 285 ND 25 1268 1140 106 65-165 20 <br /> Benzene 29 2 260 ND 25 1168 1040 116 69-129 20 <br /> Toluene 282 248 ND 25 1128 992 128 70-130 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 455 486 500 91 0 972 73-130 <br /> Toluene-d8 1507 1522 1 1 500 11014 1 104 4 1 81-114 <br /> I <br /> Severn Trent Laboratories, Inc <br /> 12/09/2004 11 16 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart of seY m Tree,Pic Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn'CA DHS ELAP#2496 Page 6 of 6 <br />