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11111512KNEM 'Ir Submission# 2004-04-0904 <br /> 1=11mgm S TL <br /> Alcohols by GC-FID <br /> TRC Alton Geoscience <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 04/28/2004 15 35 <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#2004105111-01 20 <br /> LCS 2004/05111-01 20-003 Extracted 05/11/2004 Analyzed 05/11/2004 12 36 <br /> LCSD 2004105111-0120-004 Extracted 05/11/2004 Analyzed 05/11/2004 12 49 <br /> Compound Conc mg/L. Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methanol 51 5 474 500 1030 948 83 60-130 25 • <br /> Surrogates(s) <br /> tert-Butyl alcohol 537 516 50 1074 1032 60-130 D <br /> Severn Trent Laboratories, Inc 05/11/2004 18 110 <br /> STL San Francisco`1220 Quarry Lane Pleasanton CA 94566 <br /> A p n a S—.7.r4 Pi. Tel 925 484 1919 Fax 925 484 1096'www sti-inc corn'CA DHS ELAP*2496 - Page 19 of 20 <br />