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Analysis • • <br /> a <br /> Lancaster Laboratories <br /> a Where quality is a science <br /> Page 1 of 5 <br /> Quality control Summary <br /> Client Name ChevronTexaco Group Number- 831097 <br /> Reported 12/02/02 at 03 20 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Reault MDXI 'Unita %BE 96REC Limits RPD RPD M <br /> Hatch number 023221848001 Sample numbers) 3941449 <br /> Cadmium N D 10 ug/l 103 94-110 <br /> Chromium N D 2 ug/l 102 95-110 <br /> Lead N D 8 9 ug/I 101 94-110 <br /> Nickel N D 1 9 ug/1 101 92-110 <br /> Zinc N D 4 9 ug/1 100 94-112 <br /> Hatch number 02322A53A Sample number(s) 3941447-3941448,3941450-3941451 <br /> TPH-GRO - Waters N D 50 u9/1 101 105 74-116 4 30 <br /> Batch number 02322WAP026 Sample number(s) 3941448 <br /> Aniline N D 1 ug/I 70 69 57-98 1 30 <br /> 4-Chloroanxlane N D 1 ug/l 49 42 24-118 14 30 <br /> Dabenzofuran N D 1 ug/l 85 85 66-112 0 30 <br /> 2-Methylnaphthalene N D I ug/l 80 80 54-112 0 30 <br /> 2-Nitroaniline N D 1 ug/l 96 95 79-128 1 30 <br /> 3-Nitroaniline N D 1 ug/l 90 88 28-122 2 30 <br /> 4-Nitroannline N D 1 ug/1 62 81 63-119 1 30 <br /> 2,4,5-Trichlorophenol N D 1 u9/1 94 92 70-122 2 30 <br /> 2-Chlorophenol N D 1 ug/l 91 89 73-114 3 30 <br /> henol N D 1 u9/1 50 48 23-67 3 30 <br /> -Nitrophenol N D 1 ug/l 96 94 73-123 1 30 <br /> 2,4-Dimethylphenol N D 1 ug/l 82 83 67-105 0 30 <br /> 2,4-Dichlorophenol N D 1 ug/l 91 90 71-120 1 30 <br /> 4-Chloro-3-methylphenol N D 1 ug/1 93 92 74-119 1 30 <br /> 2,4,6-Tr2chlorophenol N D I u9/1 90 89 66-125 1 30 <br /> 2,4-Dinitrophenol N D 20 ug/l 93 94 35-135 1 30 <br /> 4-Nitrophenol N D 10 ug/l 50 50 17-75 0 30 <br /> 4,6-Dinitro-2-methylphenol N D 5 ug/l 97 95 46-144 2 30 <br /> Pentachlorophenol N D 3 ug/l 87 86 43-127 1 30 <br /> N-Nitrosodimethylamine N D 2 u9/1 67 65 42-85 3 30 <br /> bis(2-Chloroethyl)ether N D 1 u9/1 89 86 75-115 4 30 <br /> 1,3-Dichlorobenzene N D 1 ug/l 64 63 35-98 1 30 <br /> 1,4-Dichlorobenzene N D 1 ug/l 65 64 38-99 1 30 <br /> 1,2-Dichlorobenzene N D 1 ug/l 69 68 42-100 1 30 <br /> bis(2-Chloroisopropyl)ether N D 1 ug/I 106 100 65-153 5 30 <br /> Hexachloroethane N D 1 ug/1 48 45 20-97 7 30 <br /> N-Nitroso-di-n-propylamine N D 1 u9/1 85 82 67-119 4 30 <br /> Nitrobenzene N D I ug/1 89 89 74-116 1 30 <br /> isophorone N D 1 ug/l 87 85 68-109 2 30 <br /> bis(2-Chloroethoxy)methane N D 1 u9/1 96 94 75-125 3 30 <br /> 1,2,4-Trichlorobenzene N D 1 ug/1 70 71 40-106 0 30 <br /> Naphthalene N D 1 ug/1 83 83 58-108 0 30 <br /> Hexachlorobutadiene N D 1 ug/1 44 40 18-103 11 30 <br /> Hexachlorocyclopentadiene N D 5 ug/1 47 43 5-156 10 30 <br /> 2-Chloronaphthalene N D 1 u9/1 81 80 61-114 0 30 <br /> Acenaphthylene N D 1 ug/1 81 81 71-116 0 30 <br /> Dimethylphthalate N D 2 ug/1 80 79 2-102 1 30 <br /> 2,6-Dinitrotoluene N D 1 ug/I 90 89 74-120 1 30 <br /> Acenaphthene N D 1 ug/l 89 90 68-114 1 30 <br /> 2,4-Dinxtrotoluene N D 1 ug/1 97 97 75-129 0 30 <br /> Fluorene N D I u9/1 82 83 63-126 1 30 <br /> 4-Chlorophenyl-phenylether N D 1 u9/1 79 80 64-121 2 30 <br /> Diethylphthalate N D 2 ug/l 86 85 28-120 1 30 <br /> N-Nltrosodiphenylamine N D 2 ug/1 87 87 64-118 0 30 <br /> *- Outside of specification <br /> 0(1) 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 M B E R 2425 New holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605-2425 <br /> 717-656 2300 Fax 717 656 2681 2216 Rev 9111/00 <br />