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WORM, <br /> © Submission# 2004-02-0755 <br /> r <br /> STL <br /> Volatile Organic Compounds by 8260B • <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 /> Protect 41050001 FA20 Received 02/24/2004 16 25 <br /> Conoco Phillips# 11192 <br /> Site 1403 Country Club Blvd Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 82606 <br /> Laboratory Control Spike Water QC Batch#2004103103-1A 09 <br /> LCS 2004103103-1A 09-003 Extracted 03/03/2004 Analyzed 03/03/2004 10 31 <br /> LCSD 2004103103-1A 09-004 Extracted 03/03/2004 Analyzed 03/03/2004 11 03 <br /> Compound Conc ug/L Exp Conc Recovery % RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 196 197 20 98 0 985 0 5 69-129 20 • <br /> Chlorobenzene 189 205 20 945 1025 81 61-121 20 <br /> 1,1-Dichloroethene 175 175 20 875 875 00 65-125 20 <br /> Toluene 200 21 0 20 1000 1050 4 9 70-130 20 <br /> Trichloroethene 200 204 20 1000 1020 2 0 74-134 20 <br /> Surrogates(s) <br /> 4-Bromofluorobenzene 471 472 500 94 2 944 86-115 <br /> 1,2-Dichloroethane-d4 481 480 500 96 2 960 76-114 <br /> Toluene-d8 498 504 1 500 1996 11008 1 1 88-110 <br /> Severn Trent Laboratories, Inc 03/09/2004 09 2110 <br /> STL San Francisco*1220 Quarry Lane Pleasanton,CA 94566 <br /> A pan of Severn 7reN Pic Tel 925 484 1919 Fax 925 484 1096*www stl inc com*CA DHS ELAP#2496 Page 5 of 6 <br />