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FRIEDMANT & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> • Date of Report: 09/29/99 <br /> Date Received: 09/27/99 <br /> Project: 5650 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES <br /> FOR PNA'S BY EPA METHOD 8270C SIM <br /> Laboratory Code: Laboratory Control Sample <br /> Reporting Spike % Recovery % Recovery Acceptance <br /> Analvte Units Level LCS LCSD Criteria RPD <br /> ' Napthalene 4g/kg (ppb) 170 82 84 51-124 2 <br /> Acenapthylene µg/kg (ppb) 170 82 82 52-125 0 <br /> Acenapthene µg/kg (ppb) 170 80 81 57-122 1 <br /> ' Fluorene 4g/kg (ppb) 170 81 83 55-126 2 <br /> Phenanthrene µg/kg (ppb) 170 85 86 59-126 2 <br /> Anthracene µg/kg (ppb) 170 80 81 45-134 1 <br /> Fluoranthene µg/kg (ppb) 170 86 87 56-132 1 <br /> Pyrene µg/kg (ppb) 170 87 89 54-125 2 <br /> Benz(a)anthracene µg/kg (ppb) 170 82 85 51-130 — 4 <br /> ' Chrysene µg/kg (ppb) 170 84 86 57.125 2 <br /> Benzo(b)fluoranthene µg/kg (ppb) 170 82 85 54-135 3 <br /> Benzo(k)fluoranthene µg/kg (ppb) 170 86 88 52-141 2 <br /> Benzo(a)pyrene 4g/kg (ppb) 170 78 77 38-140 1 <br /> • Indeno(1,2,3-cd)pyrene µg/kg (ppb) 170 74 77 58-122 3 <br /> Dibenzo(a,h)anthracene µg/kg (ppb) 170 83 81 58-130 2 <br /> Benzo(g,h,i)perylene µg/kg (ppb) 170 76 77 54-124 2 <br /> i <br /> • <br /> 32 <br />