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STLSubmission #: 2003-06-0779 <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: 06/25/2003 15:31 <br /> Batch QC Report <br /> Prep(s): 3510C/8270C-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Water QC Batch #2003/06/25-01.40 <br /> LCS 2003/06/25-01.40-004 Extracted: 06/25/2003 Analyzed: 06/26/200310:38 <br /> LCSD 2003/06/25-01.40-005 Extracted: 06/25/2003 Analyzed: 06/26/200311:05 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 7.62 7.88 10.00 76.2 78.8 3.4 50-150 30 <br /> Phenanthrene 7.83 8.13 10.00 78.3 81.3 3.8 50-150 30 <br /> Pyrene 8.40 8.36 10.00 84.0 83.6 0.5 50-150 30 <br /> Chrysene 8.63 8.82 10.00 86.3 88.2 2.2 50-150 30 <br /> Benzo(a)pyrene 9.45 9.71 10.00 94.5 97.1 2.7 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 7.06 7.07 10 70.6 70.7 43-116 <br /> p-Terphenyl-d14 7.93 7.81 10 79.3 78.1 33-141 <br /> Severn Trent Laboratories, Inc. 07/01/200310:17 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A Part of Severn Trent Pc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com`CA DHS ELAP#2496 Page 6 of 6 <br />