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STLSubmission #: 2003-03-0704 <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: 03/31/2003 17:55 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/03/31-01.40 <br /> LCS 2003/03/31-01.40-018 Extracted: 03/31/2003 Analyzed: 03/31/200317:18 <br /> LCSD 2003/03/31-01.40-007 Extracted: 03/31/2003 Analyzed: 03/31/200312:18 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 6.98 7.06 10.00 69.8 70.6 1.1 50-150 30 <br /> Phenanthrene 7.42 7.42 10.00 74.2 74.2 0.0 50-150 30 <br /> Pyrene 9.21 10.1 10.00 92.1 101.0 9.2 50-150 30 <br /> Chrysene 7.48 7.45 10.00 74.8 74.5 0.4 50-150 30 <br /> Benzo(a)pyrene 8.03 8.01 10.00 80.3 80.1 0.2 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 6.24 6.37 10 62.4 63.7 43-116 <br /> p-Terphenyl-d14 7.89 8.50 10 78.9 85.0 33-141 <br /> Severn Trent Laboratories, Inc. 04/01/200316:05 <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 7 of 8 <br />