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STL Submission# 2004-06-0414 <br /> I <br /> . Gas/BTEX Compounds by 8015M18021 <br /> RMC Pacific Materials, Inc <br /> Attn Robert Aldenhuysen <br /> iP Q Box 5252 <br /> Pleasanton, CA 94566 <br /> Phone (925) 426-2261 Fax (925)426-2231 <br /> IProject Kerlinger Received 06/11/2004 20 00 <br /> IBatch QC Report <br /> Prep(s) 5035 Test(s) 8021 B <br /> ILaboratory Control Spike Soil QC Batch #2004106116-01 01 <br /> LCS 2004106116-01 01-002 Extracted 06/1612004 Analyzed 06/16/2004 10 48 <br /> LCSD 2004106116-01 01-003 Extracted 06/16/2004 Analyzed 06/16/2004 11 23 <br /> Compound Conc mg/Kg Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec 1 RPD LCS LCSD <br /> Benzene 00948 00982 01000 948 982 3 5 77-123 35 <br /> Toluene 00972 00997 01000 972 997 2 5 78-122 35 <br /> Ethyl benzene 0 104 0 105 01000 1040 1050 1 0 70-130 35 <br /> Xylene(s) 0 310 0 314 0 300 1033 1047 1 3 75-125 35 <br /> . Surrogates(s) <br /> Trifluorotoluene 483 1483 500 1966 1966 53-125 <br /> I <br /> Severn Trent Laboratories, Inc 06/1812004 15 40 <br /> STL San Francisco"9220 Quarry Lane Pleasanton,CA 94566 <br /> A Pan of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com'CA DHS ELAP*2496 Page 33 of 33 <br />