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STLSubmission #: 2003-05-0454 <br /> PNA analysis by 8270C/SIM GC/MS <br /> Geomatrix Consultants <br /> Attn.: Martin Bloes <br /> 2101 Webster St.,12 th Floor <br /> Oakland, CA 94612 <br /> Phone: (510) 663-4148 Fax: (510) 663-4141 <br /> Project: 7243.011 Received: 05/16/2003 13:00 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/05/19-01.40 <br /> LCS 2003/05/19-01.40-004 Extracted: 05/19/2003 Analyzed: 05/21/200310:46 <br /> LCSD 2003/05/19-01.40-005 Extracted: 05/19/2003 Analyzed: 05/21/200311:13 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 7.02 7.02 10.00 70.2 70.2 0.0 50-150 30 <br /> Phenanthrene 7.53 7.61 10.00 75.3 76.1 1.1 50-150 30 <br /> Pyrene 7.36 7.40 10.00 73.6 74.0 0.5 50-150 30 <br /> Chrysene 7.73 7.91 10.00 77.3 79.1 2.3 50-150 30 <br /> Benzo(a)pyrene 8.84 9.12 10.00 88.4 91.2 3.1 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 6.52 6.46 10 65.2 64.6 43-116 <br /> p-Terphenyl-d14 6.50 7.01 10 65.0 70.1 33-141 <br /> Severn Trent Laboratories, Inc. 05/23/200316:58 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com`CA DHS ELAP#2496 Page 15 of 16 <br />