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Submission# 2004-03-0365 <br /> a r <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <br />-- Attn Anju Far#an _ _ - _ <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 03/10/2004 17 20 <br /> Conoco Phillips#6981 <br /> Site 4707 Pac[fic Ave Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Matrix Spike( MS 1 MSD ) Water QC Batch#2004103118-2B 66 <br /> MW-9 » M5 Lab ID 2004-03-0365 - 008 <br /> MS 2004/03/18-28 66-007 Extracted 03/19/2004 Analyzed 03/19/2004 03 07 <br /> Dilution 100 <br /> MSD 2004103118-26 66-031 Extracted 03/19/2004 Analyzed 03/19120134 03 31 <br /> Dilution 100 0 <br /> Compound Conc ug!L S k Leve Recove % Limits% Flags <br /> MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Benzene 279 276 NO 25 111 6 1104 1 1 69-129 20 <br /> Toluene 250 243 NO 25 1000 97 2 2 8 70-130 20 <br /> Methyl tert-butyl ether 282 277 NO 25 1128 1108 1 8 65-165 20 <br /> Surrogate(s) <br /> Toluene-d8 504 499 500 1007 99 8 88-110 <br /> 1 2-Dichloroethane-d4 542 557 500 J 108 3 111 4 76-114 <br /> Severn Trent Laboratories, Inc <br /> 03/24/2004 16 56 <br /> STL Safi Francisco-1220 Quarry Lane Pleasanton CA 94566 <br /> A panel Se ern Tient Pic Tel 925 484 1919 Fax 925 484 1096'www stl inc com "CA DHS FLAP#2496 Page 16 Of 16 <br />