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STLSubmission #: 2003-06-0042 <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: 06/02/2003 18:25 <br /> 7243.011 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/06/03-01.40 <br /> LCS 2003/06/03-01.40-008 Extracted: 06/03/2003 Analyzed: 06/03/200314:27 <br /> LCSD 2003/06/03-01.40-009 Extracted: 06/03/2003 Analyzed: 06/03/200314:54 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 7.26 6.63 10.00 72.6 66.3 9.1 50-150 30 <br /> Phenanthrene 7.84 7.43 10.00 78.4 74.3 5.4 50-150 30 <br /> Pyrene 8.43 7.93 10.00 84.3 79.3 6.1 50-150 30 <br /> Chrysene 7.87 7.93 10.00 78.7 79.3 0.8 50-150 30 <br /> Benzo(a)pyrene 8.82 8.88 10.00 88.2 88.8 0.7 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 6.62 5.99 10 66.2 59.9 43-116 <br /> p-Terphenyl-d14 8.15 7.85 10 81.5 78.5 33-141 <br /> Severn Trent Laboratories, Inc. 06/04/200315:01 <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 9 of 9 <br />