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Submission # 2001.11-0135 As <br /> Gas/BTEX Compounds by 8015M18021 <br /> Batch QC report <br /> STL Ghromalab <br /> Test Method 8021 B Prep Method 5035 1220 Quarry Lane <br /> Pleasanton CA 94566 <br /> Laboratory Control Spike(LCS/LCSD) Soil QC Batch#2001111107-01 04 Tel 925 484 1919 <br /> Fax 925 484 1096 <br /> LCS 2001111107-01 04-004 Extracted 11/07/2001 0841 Analyzed 11/07/2001 08 41 www sti-mc com <br /> LCSD 2001111107-0104-005 Extracted 11/07/2001 0908 Analyzed 11/07/2001 09 08 www chromalab com <br /> CA DHS ELAP#1094 <br /> Compound Cone [mg/Kg] Exp Cone [mg/Kg] Recovery[%] RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Benzene 00931 00892 01000 01000 931 892 4 3 77-123 35 <br /> Toluene 0 0922 00904 0 1000 01000 92 2 904 2 0 78-122 35 <br /> Ethyl benzene 00918 00899 01000 01000 91 8 899 2 1 70-130 35 <br /> Xylene(s) 0 285 0 280 0 300 0 300 950 93 3 1 8 75-125 35 <br /> Surrogate(s) <br /> Trnfluorotoluene 463 441 500 500 926 882 53125 <br /> STL Chromalab is a part of Severn Trent Laboratories Inc Page 15 of 16 <br />