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STLSubmission #: 2003-05-0695 <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: 05/23/2003 18:40 <br /> Batch QC Report <br /> Prep(s): 3550B/827OC-SIM Test(s): 8270C-SIM <br /> Laboratory Control Spike Soil QC Batch #2003/05/28-03.40 <br /> LCS 2003/05/28-03.40-020 Extracted: 05/28/2003 Analyzed: 05/28/200317:48 <br /> LCSD 2003/05/28-03.40-021 Extracted: 05/28/2003 Analyzed: 05/28/200318:14 <br /> Compound Conc. ug/Kg Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Acenaphthene 224 237 330 67.9 72.0 5.9 50-150 30 <br /> Phenanthrene 230 241 330 69.7 73.3 5.0 50-150 30 <br /> Pyrene 236 260 330 71.5 79.0 10.0 50-150 30 <br /> Chrysene 242 261 330 73.3 79.3 7.9 50-150 30 <br /> Benzo(a)pyrene 263 280 330 79.7 85.1 6.6 50-150 30 <br /> Surrogates(s) <br /> 2-Fluorobiphenyl 6.53 6.84 10 65.3 68.4 30-115 <br /> p-Terphenyl-d14 6.79 7.52 10 67.9 75.2 18-137 <br /> Severn Trent Laboratories, Inc. 05/29/200314:53 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com`CA DHS ELAP#2496 Page 8 of 9 <br />