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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 09/28/99 <br /> Date Received: 09/24/99 <br /> Project: 5650 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES <br /> FOR PNNS BY EPA METHOD 8270C SIM <br /> Laboratory Code: Laboratory Control Sample <br /> Reporting Spike % Recovery %Recovery Acceptance <br /> Analyte Units Level LCS LCSD Criteria RPD <br /> Napthalene pg/kg(ppb) 170 82 84 51-124 2 <br /> Acenapthylene pg/kg (ppb) 170 82 82 52-125 0 <br /> Acenapthene pg/kg(ppb) 170 80 81 57.122 1 <br /> Fluorene pg/kg (ppb) 170 81 83 55-126 2 <br /> Phenanthrene pg/kg (ppb) 170 85 86 59.126 2 <br /> Anthracene pg/kg (ppb) 170 80 81 45-134 1 <br /> Fluoranthene pg/kg(ppb) 170 86 87 56-132 I <br /> Pyrene gg/kg(ppb) 170 87 89 54-125 2 <br /> Benz(a)anthracene pg/kg(ppb) 170 82 85 51-130 4 <br /> Chrysene pg/kg (ppb) 170 84 86 57-125 2 <br /> Benzo(b)tluoranthene pg/kg(ppb) 170 82 85 54-135 3 <br /> Benzo(k)fluoranthene pg/kg(ppb) 170 86 88 52-141 2 <br /> Benzo(a)pyrene gg/kg(ppb) 170 78 77 38.140 I <br /> Indeno(1,2,3-cd)pyrene pg/kg(ppb) 170 74 77 58-122 3 <br /> Dibenzo(a,h)anthracene pg/kg(ppb) 170 83 81 58-130 2 <br /> Benzo(g,h,i)perylene gg/kg(ppb) 170 76 77 54-124 2 <br /> 40 <br />