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STLSubmission# 2004-01-0474 <br /> Volatile Organic Compounds by 8260B (Low Level) <br /> Treadwell & Rollo-San Francisco <br /> Attn David Dixon <br /> 555 Montgomery Street Suite 1300 , <br /> San Francisca, CA 94111-2554 <br /> Phone (415) 955-9040 Fax (415) 955-9041 <br /> Protect 2597 10 Received 01/16/2004 16 50 ' <br /> Stockton -Carando Site <br /> Batch QC Report ' <br /> Prep(s) 5030B Test(s) 8260B ' <br /> Matrix Spike it MS 1 MSD } Water QC Batch#2004/01/20-0107 <br /> CSB-1-19 GW >> MS Lab ID 2004-01-0474 -019 ' <br /> MS 2004101120-01 07-007 Extracted 01/20/2004 Analyzed 01/20/2004 14 34 <br /> Dilution 100 <br /> MSD 2004101120-01 07-008 Extracted 01/20/2004 Analyzed 01/20/2004 14 59 ' <br /> Dilution 100 <br /> Compound Conc u 1L S k Leve Recove % Limits% Flags <br /> MS MSD sample u /L MS MSD RPD Rec RPD MS MSD <br /> Benzene 196 192 ND 200 960 96 0 21 69-129 20 <br /> Chlorobenzene 204 196 NO 200 1020 98 0 4 0 61-121 20 <br /> 1 1-Dichloroethene 192 187 ND 200 96 0 935 26 65-125 20 <br /> Toluene 196 206 ND 200 980 1030 50 70-130 20 <br /> Trichloroethene 204 202 ND 200 1020 1010 1 0 74-134 20 <br /> Surrogate(s) <br /> 4-Bromofluorobenzene 455 457 500 910 914 86-115 <br /> 1 2-Dichloroethane-d4 496 488 500 99 2 976 76-114 <br /> Toluene-d8 1497 1501 1 500 1994 11003 88-110 <br /> i <br /> i <br /> Severn Trent Laboratories, Inc 01123/20041651 <br /> ' <br /> STL San Francisco` 1220 Quarry Lane Pleasanton CA 94566 <br /> Apart of S"m T'enl Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com`CA DHS ELAP#2496 Page 19 of 20 <br />