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STL <br /> Submission# 2004.01-0544 <br /> 16 <br /> GasIBTEX Compounds (High Level) <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 /> Protect 2597 10 Received 01/20/2004 17 25 <br /> Stockton-Carand o Site <br /> Batch QC Report <br /> ' Prep(s) 5030 Test(s) 8021 B <br /> Laboratory Control Spike Soil QC Batch#2004101123-05 01 <br /> ' LCS 2004101/23-05 01-002 Extracted 01/23/2004 Analyzed 01/23/2004 08 54 <br /> LCSD 2004101123-05 01-003 Extracted 01/2312004 Analyzed 01/23/2004 09 20 <br /> Compound Conc mglKg Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 0 121 0 130 0 125 968 1040 7 2 77-123 35 <br /> Toluene 0 124 0 132 0 125 992 1056 63 78-122 35 <br /> Ethyl benzene 0 117 0 124 0 125 936 992 58 70-130 35 <br /> Xylene(s) 0 349 0 374 0 375 931 99 7 6 8 75-125 35 <br /> Surmgates(s) <br /> ' Tnfluorotoluene 442 1457 1500 884 91 4 53-1251 0 <br /> 1 <br /> I 1 <br /> Severn Trent Laboratories, Inc 01/29/2004 12 36 <br /> ' STL San Francisco*1220 Quarry Lane Pleasanton,CA 94566 <br /> A part ofSevam T-1 Pie Tel 925 484 1919 Fax 925 484 1096*www stl ine corn'CA DHS FLAP*2496 Page 4 of 5 <br />