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r, r <br /> Submission 2004-OS-0291 <br /> STL Volatile Organic Compounds by 8260B <br /> TRC Alton Geosclence- Irvine <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 410500011FA20 Received 08/11/2004 1716 <br /> Conoco Phillips#11192 <br /> Site 1403 Country Club Boulevard, Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2004108113-1A 09 <br /> LCS 2004108113-1A 09-003 Extracted 08/13/2004 Analyzed 08/13/2004 08 00 <br /> LCSD 2004108113-iA 09-004 Extracted 08/13/2004 Analyzed 08113/2004 08 39 <br /> Compound Conc uglL Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS LCSD <br /> 1 1-Dlchloroethene 178 174 20 890 870 23 65-125 20 <br /> Trichloroethene 189 194 20 945 970 26 74-134 20 <br /> Chlorobenzene 198 177 20 990 885 112 61-121 20 <br /> Surrogates(s) <br /> 4-Bromofluorobenzene 463 435 500 926 870 79-118 <br /> 1,2-Dichloroethane-d4 452 496 500 904 992 78-117 <br /> Toluene-d6 1484 495 1 500 1968 1990 1 77-121 <br /> Severn Trent Laboratories, Inc 08/24/2004 11 51 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Severn Trent Pk Tel 925 484 1919 Fax 925 484 1096.www stl-inc com'CA DHS FLAP*2496 Page 6 of 8 <br />