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Submission# 2004-02-0435' TL <br /> GasIBTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 02/12/2004 18 26 <br /> Conoco Phillips#5886 <br /> Site 2701 West March Lane, Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Matrix Spike ( MS I MSD ) Water QC Batch#2004102119-02 69 <br /> MW-7S » MS Lab 1D 2004-02-0435 -014 <br /> MS 2004102119-02 69-045 Extracted 02/19/2004 Analyzed 02/19/2004 23 45 <br /> Dilution 1 00 <br /> MSD 2004102119-02 69-003 Extracted 02/20/2004 Analyzed 02/20/2004 00 03 <br /> • Dilution 100 � <br /> Compound Conc ug 1L S k Leve Recove % Limits% Flags <br /> MS MSD Sam pl, u 1L MS MSD RPD Ret RPD MS MSD <br /> Benzene 204 186 ND 250 816 744 92 69-129 20 <br /> Toluene 206 18 9 ND 250 824 756 86 70-130 20 <br /> Methyl tent butyl ether 227 22 0 ND 25 0 908 880 31 65-165 20 <br /> Surrogate(s) <br /> Toluene-d8 496 492 500 991 984 88-110 <br /> 1 2-Dichloroethane-d4 464 463 500 92 8 1 927 76-114 <br /> I <br /> Severn Trent Laboratories, Inc 02/25/2004 10 57 <br /> STL San Francisco`1220 Quarry Lane Pleasanton CA 94566 <br /> A pan of Sevem Trent Pic Tel 925 484 1919 Fax 925 484 1096'www stl-ine com'CA DHS ELAP#2496 Page 26 of 27 <br />