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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 #2003/05/30-01.40 <br /> LCS 2003/05/30-01.40-013 Extracted: 05/30/2003 Analyzed: 05/30/200315:58 <br /> LCSD 2003/05/30-01.40-014 Extracted: 05/30/2003 Analyzed: 05/30/200316:24 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 6.29 6.41 10.00 62.9 64.1 1.9 50-150 30 <br /> Phenanthrene 7.12 7.14 10.00 71.2 71.4 0.3 50-150 30 <br /> Pyrene 8.10 7.94 10.00 81.0 79.4 2.0 50-150 30 <br /> Chrysene 7.63 7.59 10.00 76.3 75.9 0.5 50-150 30 <br /> Benzo(a)pyrene 8.65 8.71 10.00 86.5 87.1 0.7 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 6.11 5.95 10 61.1 59.5 43-116 <br /> p-Terphenyl-d14 7.54 7.42 10 75.4 74.2 33-141 <br /> Severn Trent Laboratories, Inc. 06/02/200312:10 <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 />