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! <br /> STLSubmission # 2004-01-0474 <br /> Volatile Organic Compounds by 8260B (Low Level) <br /> Treadwell & Rolla-San Francisco ! <br /> Attn David Dixon <br /> 555 Montgomery Street Suite 1300 i <br /> San Francisco, CA 94111-2554 <br /> Phone (415) 955-9040 Fax (415)955-9041 <br /> Project 2597 10 Received 01/16/2004 16 50 ! <br /> Stockton - Carando Site <br /> Batch QC Report ' <br /> Prep(s) 5030E Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2004/01/19-0107 <br /> LCS 2004/01/19-0107-002 Extracted 01/19/2004 Analyzed 01/19/2004 1216 ! <br /> LCSD 2004/01/19-01 07-005 Extracted 01/19/2004 Analyzed 01/19/2004 13 52 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD i <br /> Benzene 186 176 200 93 0 88 0 55 69-129 20 <br /> Chlorobenzene 207 186 200 1035 930 10 7 61-121 20 <br /> 1,1-Dichloroethene 199 181 200 995 905 95 65-125 20 <br /> Toluene 195 177 200 975 885 9 7 70-130 20 <br /> Trichloroethene 207 177 200 1035 885 156 74-134 20 <br /> Surrogates(s) <br /> 4-Bromofluorobenzene 466 469 500 93 2 938 86-115 ' <br /> 1,2-Dichloroethane-d4 456 482 500 91 2 964 76-114 <br /> Toluene-d8 454 490 500 90 8 980 88-110 <br /> i <br /> 1 <br /> i <br /> Severn Trent Laboratories, Inc 01/231200416 51 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 ' <br /> A aafl ofs"�„Tien Pic Tel 925 484 1919 Fax 925 484 1096'www stl-inc cam'CA DHS FLAP#2496 Page 17 of 20 <br /> ! <br />