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� STL <br /> • GasIBTEX Fuel Oxygenates ates by 82608 Submission 2004-07-0397 <br /> TRC Alton Geosclence- Irvine <br /> Attn An1u Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Protect 41050001 FA20 Received 07/13/2004 16 34 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado St Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004/07123-2B 65 <br /> LCS 2004107123-2B 65-042 Extracted 07/23/2004 Analyzed 07/23/2004 22 42 <br /> LCSD 2004/07/23-213165-004 Extracted 07/23/2004 Analyzed 07/23/2004 23 07 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limas% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 33 8 333 25 1352 1332 1 5 65-165 20 <br /> Benzene 266 26 5 25 1064 1060 04 69-129 20 <br /> Toluene 270 277 25 1080 1108 2 6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 467 473 500 934 946 72-128 <br /> Toluene-d8 477 1 467 500 95 4 93 4 80-113 <br /> Severn Trent Laboratories Inc <br /> 07!2712004 12 34 <br /> STL San Francisco"1220 Quarry Lane Pleasanton,CA 94566 <br /> A part or Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www stl-mc corn"CA DHS EL.AP#2496 Page 20 of 24 <br />