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STLSubmission #: 2003-05-0695 <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: 05/23/2003 18:40 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/05/27-01.40 <br /> LCS 2003/05/27-01.40-004 Extracted: 05/27/2003 Analyzed: 05/28/200310:31 <br /> LCSD 2003/05/27-01.40-005 Extracted: 05/27/2003 Analyzed: 05/28/200310:58 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 5.22 5.28 10.00 52.2 52.8 1.1 50-150 30 <br /> Phenanthrene 5.43 5.45 10.00 54.3 54.5 0.4 50-150 30 <br /> Pyrene 5.46 5.16 10.00 54.6 51.6 5.6 50-150 30 <br /> Chrysene 5.76 5.76 10.00 57.6 57.6 0.0 50-150 30 <br /> Benzo(a)pyrene 6.36 6.50 10.00 63.6 65.0 2.2 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 4.63 4.52 10 46.3 45.2 43-116 <br /> p-Terphenyl-d14 4.87 4.60 10 48.7 46.0 33-141 <br /> Severn Trent Laboratories, Inc. 05/28/200317:05 <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 14 of 14 <br />