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STLSubmission #: 2003-05-0057 <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: 05/01/2003 16:50 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/05/02-01.40 <br /> LCS 2003/05/02-01.40-013 Extracted: 05/02/2003 Analyzed: 05/02/200317:18 <br /> LCSD 2003/05/02-01.40-014 Extracted: 05/02/2003 Analyzed: 05/02/200317:44 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 6.96 7.11 10.00 69.6 71.1 2.1 50-150 30 <br /> Phenanthrene 6.81 6.89 10.00 68.1 68.9 1.2 50-150 30 <br /> Pyrene 6.25 6.47 10.00 62.5 64.7 3.5 50-150 30 <br /> Chrysene 7.79 7.84 10.00 77.9 78.4 0.6 50-150 30 <br /> Benzo(a)pyrene 8.60 8.72 10.00 86.0 87.2 1.4 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 7.25 7.61 10 72.5 76.1 43-116 <br /> p-Terphenyl-d14 7.06 7.43 10 70.6 74.3 33-141 <br /> Severn Trent Laboratories, Inc. 05/08/200312:00 <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 5 of 5 <br />