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STLSubmission #: 2003-05-0029 <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 17:10 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/05/01-01.40 <br /> LCS 2003/05/01-01.40-004 Extracted: 05/01/2003 Analyzed: 05/02/2003 09:57 <br /> LCSD 2003/05/01-01.40-005 Extracted: 05/01/2003 Analyzed: 05/02/200310:24 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 7.36 7.51 10.00 73.6 75.1 2.0 50-150 30 <br /> Phenanthrene 7.25 7.44 10.00 72.5 74.4 2.6 50-150 30 <br /> Pyrene 7.18 6.86 10.00 71.8 68.6 4.6 50-150 30 <br /> Chrysene 7.98 8.16 10.00 79.8 81.6 2.2 50-150 30 <br /> Benzo(a)pyrene 8.84 9.00 10.00 88.4 90.0 1.8 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 7.21 7.14 10 72.1 71.4 43-116 <br /> p-Terphenyl-d14 7.61 7.28 10 76.1 72.8 33-141 <br /> Severn Trent Laboratories, Inc. 05/02/200315:20 <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 />