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FRIEDMAN & BRUYA, INC. <br /> --------- ---------- - <br /> r ENVIRONMENTAL CHEMISTS <br /> Date of Report: 11/21/03 <br /> Date Received: 11/07/03 <br /> Project: Pombo Property, 06-6102-00-4700-201, F&BI 311051 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER <br /> SAMPLES FOR PNXS BY EPA METHOD 8270C SIM <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analyte Units Level LCS LCSD Criteria (Limit 20) <br /> Naphthalene pg/L(ppb) 5 86 89 70-107 4 <br /> Acenaphthylene µg2(ppb) 5 93 96 65-116 3 <br /> Acenaphthene µg2(ppb) 5 93 95 70-114 2 <br /> Fluorene µg2 (ppb) 5 90 91 65-113 2 <br /> Phenanthrene pg/L (ppb) .5 89 89 72-108 1 <br /> Anthracene µg/L (ppb) 5 90 91 60-106 1 <br /> Fluoranthene µg2(ppb) 5 94 94 69-109 1 <br /> Pyrene µg/L(ppb) 5 95 96 75-109 2 <br /> Benz(a)anthracene pg/L(ppb) 5 91 93 52-120 3 <br /> Chrysene µg2(ppb) 5 92 92 61-110 0 <br /> Benzo(b)fluoranthene pg/L (ppb) 5 97 97 49-146 0 <br /> Benzo(k)fluoranthene pg/L(ppb) 5 89 95 71-114 6 <br /> Benzo(a)pyrene pg/L(ppb) 5 93 95 58-126 2 <br /> Indeno(1,2,3-cd)pyrene µg2 (ppb) 5 82 83 71-108 2 <br /> Dibenzo(a,h)anthracene pg/L(ppb) 5 89 91 67-120 2 <br /> Benzo(g,h,i)perylene pg/L(ppb) 5 82 83 67-106 1 <br /> i <br /> 13 <br />