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5 Analysis . • <br /> a+ <br /> Lancaster Laboratories <br /> Where quality is a science <br /> Page 1 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number: 828908 <br /> Reported 11/13/02 at 01 47 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL units %R$C RRC Limits RPD RPD Max <br /> Batch number 023050007A Sample number(s) 3930710,3930712-3930714 <br /> TPH - DRO CA LUFT (Waters) N D 50 ug/l 105 104 54-120 1 20 <br /> Batch number 02305A55A Sample number(s) 3930709-3930710,3930712-3930714 <br /> TPH-GRO - Waters N D 50 ug/l 104 103 74-116 1 30 <br /> Batch number 02305WAR026 Sample number(s) 3930710 <br /> Aniline N D 1 ug/l 47* 52* 57-98 9 30 <br /> 4-Chloroaniline N D 1 ug/l 30 33 24-118 9 30 <br /> Dibenzofuran N D 1 ug/l 85 88 66-112 3 30 <br /> 2-Methylnaphthalene N D 1 ug/l 81 84 54-112 4 30 <br /> 2-Nitroaniline N D 1 ug/l 87 91 79-128 4 30 <br /> 3-Nxtroan=line N D 1 ug/i 66 64 28-122 3 30 <br /> 4-Nitroaniline N D 1 ug/l 73 70 63-119 4 30 <br /> 2,4,5-Trichlorophenol N D 1 ug/l 87 90 70-122 4 30 <br /> 2-Chlorophenol N D 1 ug/1 84 84 73-114 0 30 <br /> Phenol N D 1 ug/l 44 53 23-67 19 30 <br /> 2-Nstrophenol N D 1 ug/l BB 89 73-123 1 30 <br /> 2,4-Dimethylphenol N D 1 ug/l 82 8S 67-105 3 30 <br /> 4-Dichlorophenol N D 1 ug/l 85 87 71-120 2 30 <br /> Chloro-3-methylphenol N D 1 ug/l 88 89 74-119 2 30 <br /> ,4,6-Trichlorophenol N D 1 ug/l 83 87 66-125 5 30 <br /> 2,4-Dsnitrophenol N D 20 ug/l 80 80 35-135 0 30 <br /> 4-Nitrophenol N D 10 ug/l 52 70 17-75 29 30 <br /> 4,6-Dinitro-2-methylphenol N D 5 ug/l 86 85 46-144 2 30 <br /> Pentachlorophenol N D 3 ug/l 75 74 43-127 1 30 <br /> N-Nitrosodimethylamine N D 2 ug/l 57 62 42-85 9 30 <br /> bis(2-Chloroethyl)ether N D 1 ug/l 84 84 75-115 0 30 <br /> 1,3-Dichlorobenzene N D 1 ug/l 71 79 35-98 10 30 <br /> 1,4-Dichlorobenzene N D 1 ug/l 69 78 38-99 12 30 <br /> 1,2-Dichlorobenzene N D 1 ug/1 71 80 42-100 12 30 <br /> bis(2-Chloroisopropyl)ether N D 1 ug/l 97 97 65-153 1 30 <br /> Hexachloroethane N D 1 ug/l 69 83 20-97 18 30 <br /> N-Nitroso-di-n-propylamxne N D 1 ug/l 81 83 67-119 2 30 <br /> Nitrobenzene N D 1 ug/l 89 91 74-116 3 30 <br /> Isophorone N D 1 ug/l 84 84 68-109 0 30 <br /> bis(2-Chloroethoxy)methane N D 1 ug/l 92 93 75-125 0 30 <br /> 1,2,4-Trichlorobenzene N D 1 ug/l 79 86 40-106 9 30 <br /> Naphthalene N D 1 ug/l 82 86 58-108 6 30 <br /> Hexachlorobutadiene N D 1 ug/l 77 90 18-103 16 30 <br /> Hexachlorocyclopentadsene N D 5 ug/1 79 100 5-156 23 30 <br /> 2-Chloronaphthalene N D 1 ug/l 84 87 61-114 4 30 <br /> Acenaphthylene N D 1 ug/l 80 84 71-116 6 30 <br /> Dimethylphthalate N D 2 ug/l 62 88 2-102 35* 30 <br /> 2,6-Dinxtrotoluene N D 1 ug/l 84 88 74-120 4 30 <br /> Acenaphthene N D 1 ug/l 89 92 68-114 3 30 <br /> 2,4-Dinitrotoluene N D 1 ug/l 91 94 75-129 4 30 <br /> Fluorene N D 1 ug/l 97 101 63-126 4 30 <br /> 4-Chlorophenyl-phenylether N D 1 ug/l 81 83 64-121 2 30 <br /> Diethylphthalate N D 2 ug/l 81 90 28-120 10 30 <br /> N-Nitrosodiphenylamine N D 2 ug/l 80 81 64-118 1 30 <br /> 4-Bromophenyl-phenylether N D 1 ug/l 88 88 70-120 0 30 <br /> Hexachlorobenzene N D 1 ug/l 89 90 65-128 1 30 <br /> Phenanthrene N D 1 ug/l 86 88 67-116 2 30 <br /> Anthracene N D 1 ug/l 85 85 66-116 0 30 <br /> *-Outside of specification <br /> 0) The result for one or both determinations was less than five times the LOQ <br /> 2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> M E I%A B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> UnixLancaster PA 17605 2425 <br /> 7i7 656-2300 Fax 717 656-7681 2216 Rev 9111100 <br />