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STL Submission# 2003-10-0414 <br /> 8 <br /> • Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geosclence <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 410500-01 Received 10/09/2003 15 25 <br /> Conoco Phillips Site#4409 <br /> Site 1502 N Eldorado St <br /> Batch QG Report <br /> Preps) 6030B Test(s). 8260FAB <br /> Laboratory Control Spike Water QC Batch#20103114/22-0'1.68 <br /> ICS 2003/10/22-01.68-019 Extracted 1012212003 Analyzed 10122!2003 09.19 <br /> LCSD 2003/10/22-0168-044) Extracted 10122/2003 Analyzed 10/22/2003 09.40 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RFD LCS LCSD <br /> Benzene 233 229 250 932 91 6 1 7 69-129 20 <br /> Toluene 247 233 250 988 932 58 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 235 223 250 940 692 52 65-165 20 <br /> Surrogates(s) <br /> 1,2-DichlamethaneA4 505 503 500 1010 1006 76-114 <br /> Toluene-d8 537 532 500 1074 1064 88-110 <br /> Severn Trent Laboratories, Inc 01/08/2004 1345 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 <br /> Arwi a 5—Trm+"c Tel 925 484 1919 Fax 925 484 1096`www sti me corn`CA DHS FLAP#2496 Page 10 of 10 <br />