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ST L Submission# 2003-10-0434 <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 410500-01 Received 10/10/2003 15 37 <br /> 01205 <br /> Site 16470 Cambridge St, Lathrop CA <br /> ' Batch QC Report <br /> Prep(s) 8015M Alcohols Test(s) 80151VIod <br /> Laboratory Control Spike Water QC Batch#2003110116-01 20 <br /> LCS 2003/10/16-0120-002 Extracted 10/1612003 Analyzed 10/16/200i1523 <br /> LCSD 2003110116-01 2( 003 Extracted 10/'16'/20'03 Analyzed M/16/200315 41 <br /> Compound Conc mg1L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methanol 383 456 500 766 912 174 60-130 25 <br /> Surrogates{s) <br /> tert-Butyl alcohol 412 393 50 824 786 60-130 0 <br /> Severn Trent Laboratories, Inc <br /> 10/23/2003 14 00 <br /> STL San Francisco.1220 Quarry Lane,Pleasanton,CA 94566 <br /> Ao.edsw.m T,.m Plc Tel 925 484 1919 Fax 925 484 1096"www stl-inc com•CA DHS FLAP#2496 Page 12 of 12 <br />