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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report. 06/11/02 <br /> Date Received: 05/24/02 <br /> Project: 5011.001 (Roberts Property) <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER <br /> SAMPLES FOR PNA'S BY EPA METHOD 8270C SIM <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analvte Units Level LCS LCSD Criteria (Lunit 20) <br /> Naphthalene jig/l,(ppb) 5 86 84 56.126 3 <br /> Acenaphthylene gglL(ppb) 5 102 100 61.128 3 <br /> Acenaphthene µglL(ppb) 5 90 88 63-124 3 <br /> Fluorene 4glL(ppb) 5 102 98 64-130 4 <br /> Phenanthrene 4glL(ppb) 5 87 87 69-124 0 <br /> Anthracene µglL(ppb) 5 108 108 68-122 0 <br /> Fluoranthene jigIL(ppb) 5 95 96 73-129 1 <br /> Pyrene µglL(ppb) 5 94 95 68-125 1 <br /> Benzo(a)anthracene jig/l,(ppb) 5 81 79 69-122 1 <br /> Chrysene }sglL(ppb) 5 85 84 68-122 0 <br /> Benzo(b)fluoranthene 4glL(ppb) 5 86 87 67-132 1 <br /> Benzo(k)fluoranthene 4g1L(ppb) 5 88 88 68-132 1 <br /> Benzo(a)pyrene µglL(ppb) 5 93 93 71-132 0 <br /> Indeno(1,2,3-ed)pyrene µg2(ppb) 5 97 97 58-130 0 <br /> Dibenz(a,h)anthracene µglL(ppb) 5 98 98 59-137 0 <br /> Benzo(g,h,i)perylene µglL(ppb) 5 92 93 58-130 0 <br /> 38 <br />