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STLSubmission#: 2003-11-0639 <br /> Pentachlorophenol by 8270C <br /> Geomatrix Consultants <br /> Attn.: Robert Cheung <br /> 2101 Webster Street, 12th Floor <br /> Oakland, CA 94612 <br /> Phone: (510)663-4299 Fax: (510)663-4141 <br /> Project: 7066.001 Received: 11/18/2003 17:50 <br /> Tracy Gravel Pits <br /> Site: 26805 South MacArthur Dr,Tracy,CA,95576 <br /> Batch QC Report <br /> Prep(s): 355013/8270C Test(s):8270C <br /> Matrix Spike(MS/MSD) Soil QC Batch#2003/11/20-01.11 <br /> GMX-23-1.0 >> MS Lab ID: 2003-11-0639-017 <br /> MS: 2003/11/20-01.11-005 Extracted: 11/20/2003 Analyzed: 11/21/2003 11:55 <br /> Dilution: 1.00 <br /> MSD: 2003/11/20-01.11-006 Extracted: 11/20/2003 Analyzed: 11/21/2003 12:23 <br /> Dilution: 1.00 <br /> Compound Conic. mg/Kg Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample mg/Kg MS MSD RPD Rec. RPD MS MSD <br /> Pentachlorophenol 1.08 0.960 ND 1.99 54.3 48.0 12.3 11-114 35 <br /> Surrogate(s) <br /> 2-Fluorophenol 27.7 22.3 50 55.5 44.7 25-121 <br /> Phenol-d6 33.6 29.9 50 67.2 59.8 24-113 <br /> 2,4,6-Tribromophenol 33.3 32.2 50 66.7 64.5 19-122 <br /> Severn Trent Laboratories, Inc. 11/25/2003 15:15 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP#2496 Page 6 of 7 <br />