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Sr7-rT Submission# 2003-11-0593 <br /> Gas/BTEX Compounds by 8015M/8021 <br /> RMC Pacific Materials, Inc <br /> Attn Robert Aldenhuysen <br /> P O Box 5252 <br /> Pleasanton, CA 94566 <br /> Phone (925)426-2261 Fax (925)426-2231 <br /> Project Received 11/17/2003 15 37 <br /> Batch QC Report <br /> Prep(s) 5030 Test(s) 8021 B <br /> Laboratory Control Spike Water QC Batch#2003/11/20-01 01 <br /> LCS 2003/11/20-0101-006 Extracted 11/20/2003 Analyzed 11/20/2003 10 00 <br /> LCSD 2003/11/20-01 01-007 Extracted 11/20/2003 Analyzed 11/20/2003 10 32 <br /> Compound Conic ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS I LCSD <br /> Benzene 107 103 1000 1070 1030 3 8 77-123 20 <br /> Toluene 104 996 1000 1040 996 4 3 78-122 20 <br /> Ethyl benzene 104 996 100 0 1040 996 4 3 70-130 20 <br /> Xylene(s) 304 291 300 1013 970 4 3 75-125 20 <br /> Surrogates(s) <br /> Trifluorotoluene 534 504 500 1068 11006 58-124 <br /> • Severn Trent Laboratories, Inc 11/241200312 13 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> Amo aS—M T,« Pm TO 925 484 1919 Fax 925 484 1096`www s8-inc com'CA DHS ELAP#2496 Page 6 or 7 <br />