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Submission# 2004-01-0703 <br /> STL• Alcohols by GC-FID <br /> TRC Alton Geoscience <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 01/27/2004 13 30 <br /> Conoco Phillips#01205 <br /> Site 16470 Cambridge St , Lathrop <br /> Batch QC Report <br /> Prep(s) 8015M Alcohols - Test(s) 8015Mod <br /> Laboratory Control Spike Water QC Batch #2004101130-01 20 <br /> LCS 2004101130-01 20-003 Extracted 01/30/2004 Analyzed 01130120041311 <br /> LCSD 2004101130-01 20-004 Extracted 01/30/2004 Analyzed 01/30/2004 13 23 <br /> Compound Conc mg/L Exp Conc Recovery% RPD Gtr! Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS LCSD <br /> Methanol 498 520 500 99 6 1040 4 3 64-130 25 <br /> Surrogates(s) <br /> tent-Butyl alcohol 48 2 472 50 964 944 60-130 0 <br /> Severn Trent Laboratories, Inc 02/03/2004 12 19 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> A part of S—n Trent PtG Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn"CA DHS ELAP#2496 Page 19 of 20 <br />