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+wt <br /> Submission 2004-11-0843 <br /> WEN <br /> STL <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience- Irvine <br /> Attn Antu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Protect 41050001 FA20 Received 11/29/2004 18 20 <br /> Conoco Phillips#08671 <br /> Site 8606 Thornton Road, Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch#2004112104--2 64 <br /> i <br /> MS/MSD Lab 1D 2004-11-0840-003 <br /> MS 2004112104--2 64-016 Extracted 12/04/2004 Analyzed 12/04/2004 20 16 - <br /> Dilution 1 00 <br /> MSD 2004112104-2 64-038 Extracted 12/04/2004 Analyzed 12/04/2004 20 38 <br /> Dilution 1 00 <br /> Compound Conc ug/L S k Leve Recove % Limits% Flags <br /> MS MSD Sample u IL MS MSD RPD Rec RPD MS MSD <br /> Benzene 255 271 ND 25 1020 1084 61 69-129 20 <br /> Toluene 259 271 ND 25 1036 1084 4 5 70-130 20 T <br /> Methyl tert-butyl ether 289 286 ND 25 1156 1144 10 65-165 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 524 514 500 1049 1028 73-130 <br /> Toluene-d8 486 490 500 972 981 81-114 <br /> Severn Trent Laboratories, Inc 12/10/2004 1721 <br /> STL San Francisco•1220 Quarry Lane,Pleasanton CA 94566 <br /> Apat 01 S"em Trent Pk Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn'CA DHS FLAP#2496 Page 20 of 24 <br />