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STLSubmission #: 2003-05-0747 <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 Task C Received: 05/28/2003 12:15 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/05/28-02.40 <br /> LCS 2003/05/28-02.40-010 Extracted: 05/28/2003 Analyzed: 05/29/200316:54 <br /> LCSD 2003/05/28-02.40-011 Extracted: 05/28/2003 Analyzed: 05/29/200317:21 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 6.19 6.02 10.00 61.9 60.2 2.8 50-150 30 <br /> Phenanthrene 6.76 6.53 10.00 67.6 65.3 3.5 50-150 30 <br /> Pyrene 6.06 6.33 10.00 60.6 63.3 4.4 50-150 30 <br /> Chrysene 7.12 6.76 10.00 71.2 67.6 5.2 50-150 30 <br /> Benzo(a)pyrene 7.84 7.29 10.00 78.4 72.9 7.3 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 5.87 5.83 10 58.7 58.3 43-116 <br /> p-Terphenyl-d14 6.08 6.39 10 60.8 63.9 33-141 <br /> Severn Trent Laboratories, Inc. 06/02/200310:26 <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 />