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ATLSubmission # 2004-01-0308 <br /> Volatile Organic Compounds by 82608 {Low Level} CP <br /> Treadwell & Rollo-San Francisco <br /> Attn Brian Moore <br /> 555 Montgomery Street, Suite 1300 <br /> San Francisco, CA 94111-2554 <br /> Phone (415) 955-9040 Fax (415) 955-9041 <br /> Project 2597 10 Received 01/13/2004 15 45 11 <br /> Stockton ll <br /> Batch QC Report I' <br /> Prep(s) 5030E l <br /> Test(s) 8260B <br /> Laboratory Control Spike � <br /> Water QC Batch #2004101114-01 60 <br /> LCS 2004101114-01 60-049 Extracted 01/14/2004 <br /> LCSD 2004101114-01 60-023 Analyzed 01/14/20040849 <br /> Extracted 01/14/2004 Analyzed 01/14/2004 09 23 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> Benzene <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> 18 9 20 3 200 94 5 1015 7 1 69-129 20 <br /> Chloro8enzene 188 202 200 94 0 101 0 7 2 61-121 20 <br /> 1,1-Dichloroethene 187 19 2 200 935 96 0 2 6 65-125 20 <br /> Toluene 18 4 196 2100 92 0 98 0 6 3 70-130 20 <br /> Trichloroethene 18 2 i9 D 20 0 91 0 95 0 4 3 74-134 2D t <br /> Surrogates(s) <br /> 4-Bromofluorobenzene 542 516 500 1084 1032 <br /> 1,2-Dichloroethane-d4 436 446 86-1 i5 <br /> Toluene-d8 500 87 2 89 2 76-114 <br /> 462 485 500 924 97 0 88-110 <br /> t <br /> L <br /> Severn Trent Laboratories, Inc 01/23/20041328 <br /> STL San Francisco'1220 Quarry Lane Pleasanton,CA 94566 L <br /> A part of Severn Trent Pk Tel 925 484 1919 Fax 925 484 1096*www stl-mc com'CA DHS FLAP#2496 <br /> Page 11 of 12 <br />