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40�1Lancasternal sis Re ort <br /> . Laboratories A Y p <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605.2425•717 656.2300 Fax 717-656-2661•www lancasterlabs com <br /> Page 1 of 6 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 921483 <br /> Reported 12/07/04 at 02 32 PM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted In these situations,to demonstrate precision and accuracy at <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified in the <br /> method <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unxts �IsRBC %RRC Limits RPD RPD Max <br /> Batch number 04324112601A Sample number(s) 4409323 <br /> TRPH 418 1 N D 0 40 mg/1 86 87 54-113 2 14 <br /> Batch number 04324WABO26 Sample number(s) 4409323 <br /> Aniline N D 1 ug/1 82 72 35-102 13 30 <br /> 4-Chloroaniline N D 1 ug/1 82 72 32-120 13 30 <br /> Dxbenzofuren N D 1 ug/1 87 88 65-110 1 30 <br /> 2-Methylnaphthalene N D 1 ug/l 86 85 54-110 1 30 <br /> 042-Nitroaniline N D 1 ug/1 96 98 73-115 2 30 <br /> Nxtroaniline N D 1 U9/1 92 85 64-113 7 30 <br /> -Nitroaniline N D 1 ug/l 94 91 56-107 3 30 <br /> 2,4,5-Trichlorophenol N D 1 u9/1 90 90 70-115 0 30 <br /> 2-Chlorophenol N D 1 ug/1 89 88 63-112 2 30 <br /> Phenol N D 1 ug/l 44 42 24-65 3 30 <br /> 2-Nxtrophenol N D 1 ug/1 108 101 68-118 6 30 <br /> 2,4-Dimethylphenol N D 1 ug/1 92 66 60-107 5 30 <br /> 2,4-Dichlorophenol N D 1 ug/1 91 87 66-110 5 30 <br /> 4-Chloro-3-methylphenol N D 1 ug/1 90 89 70-112 2 30 <br /> 2,4,6-Trichlorophenol N D 1 ug/l Be 86 69-111 2 30 <br /> 2,4-Dinitrophenol N D 20 ug/l 89 96 46-121 7 30 <br /> 4-Nitrophenol N D 10 ug/1 47 48 19-76 1 30 <br /> 4,6-131nxtro-2-methylphenol N D 5 ug/l 119 118 56-130 0 30 <br /> Pentachlorophenol N D 3 ug/1 80 77 48-108 3 30 <br /> N-Nitrosodxmethylamine N D 2 ug/1 65 64 39-84 2 30 <br /> bis(2-Chloroethyl)ether N D 1 ug/1 83 81 57-110 2 30 <br /> 1,3-Dichlorobenzene N D 1 ug/1 86 84 35-107 3 30 <br /> 1,4-Dichlorobenzene N D 1 u9/1 87 82 37-109 5 30 <br /> 1,2-Dichlorobenzene N D 1 ug/1 85 83 42-105 2 30 <br /> bis(2-Chloroisopropyl)ether N D 1 ug/1 103 99 55-130 4 30 <br /> HexachlOTOethane N D 1 ug/1 87 85 18-110 2 30 <br /> N-Nitroso-di-n-propylamine N D 1 Ug/1 85 83 56-109 2 30 <br /> Nitrobenzene N D 1 ug/1 92 85 61-111 7 30 <br /> isophorone N D 1 u9/1 85 83 63-105 3 30 <br /> bis(2-Chloroethoxy)methane N D 3 ug/1 102 96 69-119 6 30 <br /> 1,2,4-Trlchlorobenzene N D 1 Ug/1 86 84 45-109 2 30 <br /> 1 86 85 58-108 1 30 <br /> Naphthalene N D 1 ug/ <br /> Hexachlorobutadiene N D 1 ug/1 88 83 15-119 6 30 <br /> Hexachlorocyclopentadiene N D 5 ug/1 99 103 12-140 4 30 <br /> 2-Chloronaphthalene N D 1 ug/1 74 74 57-95 0 30 <br /> Acenaphthylene N D 1 ug/1 96 97 65-120 2 30 <br /> Dimethylphthalate N D 2 ug/1 85 84 34-114 1 30 <br /> 2,6-Dinitrotoluene N D 1 ug/1 Be 91 70-108 4 30 <br /> Acenaphthene N D 1 ug/l 89 69 68-111 1 30 <br /> 2,4-Dinxtrotoluene N D 1 ug/1 100 101 75-122 1 30 <br /> *-Outside of specification <br /> (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 />