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STLSubmission #: 2003-04-0681 <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: 04/28/2003 18:30 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/04/29-01.40 <br /> LCS 2003/04/29-01.40-005 Extracted: 04/29/2003 Analyzed: 04/29/200315:19 <br /> LCSD 2003/04/29-01.40-006 Extracted: 04/29/2003 Analyzed: 04/29/200315:46 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 6.42 7.13 10.00 64.2 71.3 10.5 50-150 30 <br /> Phenanthrene 6.92 7.37 10.00 69.2 73.7 6.3 50-150 30 <br /> Pyrene 6.39 6.75 10.00 63.9 67.5 5.5 50-150 30 <br /> Chrysene 7.82 8.23 10.00 78.2 82.3 5.1 50-150 30 <br /> Benzo(a)pyrene 8.64 9.23 10.00 86.4 92.3 6.6 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 5.58 6.41 10 55.8 64.1 43-116 <br /> p-Terphenyl-d14 6.83 7.19 10 68.3 71.9 33-141 <br /> Severn Trent Laboratories, Inc. 04/30/200313:25 <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 8 of 8 <br />