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Ili A <br /> STLSubmission 2004-06-0617 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience- Irvine <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Protect 41050001 FA20 Received 06117/2004 16 31 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave Stockton <br /> 'Batch QC Report - �F <br /> s �Prep(s) 50308 r ;x x�` f 'X T _ s '° Test(s)'8260FAB„ <br /> t�+ �. �a v " '"�� r'E +: <br /> ` Laboratory Control Spike ,15`, '� Water>�Jek `, Y�° QC Batch# '04106;24'-3C 62`y <br /> ^s} -" ," T „' r. r <br /> } LCS Y 2004106124-3C 62-026 Extracted 06/24/2004 Analyzed 06/24/2004 17 26 <br /> LCSD 2004/06/24 30 621048 Extracted 06/24/2004 „,Analyzed 06/24/2004 1748 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS I LCSD <br /> Methyl lert-butyl ether(MTBE) 228 206 25 91 2 824 101 65-165 20 <br /> Benzene 249 242 25 996 968 29 69-129 20 <br /> Toluene 264 24 6 25 1056 984 71 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 399 390 500 79 8 78 0 72-128 <br /> Toluene-d8 483 496 500 96 6 99 2 80-113 <br /> Severn Trent Laboratories, Inc 06/30/2004 1255 <br /> STL San Francisco' 1220 quarry Lane,Pleasanton CA 94566 <br /> A pen of Severn Trent P[c Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn`CA DHS ELAP#2496 Page 19 of 22 <br />