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STLSubmission# 2004-01-0474 <br /> Gas/BTEX by 8015M18021 <br /> Treadwell & Rollo-San Francisco <br /> Attn David Dixon <br /> 555 Montgomery Street Suite 1300 , <br /> San Francisco, 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) 5035 Test(s) 8021 B <br /> Matrix Spike( MS 1 MSD ) Soil QC Batch#2004/01/20-0101 <br /> CSB-4-16 0 >> MS Lab ID 2004-01-0474-004 <br /> MS 2004101120-01 01-016 Extracted 01/21/2004 Analyzed 01/21/2004 00 39 <br /> Dilution 100 <br /> MSD 2004101120-01 01-017 Extracted 01/21/2004 Analyzed 01/21/2004 01 06 <br /> Dilution 100 <br /> Compound Cone m Ka Spk Leve Recove % Limits% Fla s <br /> MS MSD Sample mg[Kg MS MSD I RPD Rec RPD MS MSD <br /> Benzene 00627 00805 ND 00958 65 4 886 301 65-135 35 <br /> Toluene 00639 00826 ND 00958 66 7 909 30 7 65-135 35 <br /> Ethyl benzene 00580 00747 ND 00958 605 82 2 304 65-135 35 mso <br /> Xylene(s) 0 183 0 234 1 ND 0 287 638 85 7 29 3 65-135 35 mso <br /> Surrogate(s) <br /> Trifluorotoluene 268 1 390 500 1536 1780 1 53-125 0 ' <br /> Severn Trent Laboratories, Inc 01129120041234 , <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart of Sew hart Pk Tel 925 484 1919 Fax 925 484 1096'www stl-inc com`CA DHS EL4P#2496 Page 23 of 28 <br />