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Lancaster <br /> Laboratories Analysis Reportle <br /> 2425 New Holland Pike PC Box 12425 Lancaster PA 17605-2425•717 656 2300 Fax 717 656 2681•www lancasterlabs com <br /> Page 4 of 8 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 907633 <br /> Reported 09/41/04 at 08 32 AM <br /> Sample Matrix Quality Control <br /> MS MSD NS114SD RPD BKG DUP Dup Dup RPD <br /> Analysis Name %REC %REC Limits RPD XM Conc Conc RPD Marc <br /> 4-Chloroaniline 83 82 30-116 1 30 <br /> Dibenzofuran 88 86 60-110 2 30 <br /> 2-Methylnaphthalene 85 83 58-110 3 30 <br /> 2-Nltroaniline 97 96 66-117 0 30 <br /> 3-Nitroaniline 91 89 42-125 2 30 <br /> 4-Nitroaniline 79 81 55-106 3 30 <br /> 2 4 5-Trichlorophenol 95 95 52-124 1 30 <br /> 2-Chlorophenol 88 89 56-110 2 30 <br /> Phenol 36 39 8-82 6 30 <br /> 2-Nitrophenol 102 103 32-146 1 30 <br /> 2 4-Dimethylphenol 60 82 29-134 3 30 <br /> 2 4-Dichlorophenol 89 90 59-113 1 30 <br /> 4-Chloro-3-methylphenol 89 B8 69-112 1 30 <br /> 2 4 6-Trichlorophenol 94 93 48-127 2 30 <br /> 2 4-Dinitrophenol 27 67 20-151 86* 30 <br /> 4-Nitrophenol 28 33 10-95 17 30 <br /> 4,6-Dinitro-2-methylphenol 88 91 20-346 3 30 <br /> Pentachlorophenol 72 77 16-131 7 30 <br /> N-Nitrosodlmethylamine 50 52 37-76 4 30 <br /> bis(2-Chloroethyl)ether 92 91 55-108 1 30 <br /> 1,3-Dichlorobenzene 81 80 42-107 2 30 . <br /> 1 4-Dichlorobenzene 82 81 38-112 1 30 <br /> 1,2-Dichlorobenzene 82 81 45-106 2 30 <br /> b1B(2-Chloroisopropyl)ether 104 102 60-121 2 30 <br /> Hexachloroethane 78 76 15-124 3 30 <br /> N-Nitroso-di-n-propylamine 91 88 56-106 3 30 <br /> Nitrobenzene 94 93 33-133 1 30 <br /> Isophorone 88 88 60-106 1 30 <br /> bis(2-Chloroethoxy)methane 101 101 66-119 0 30 <br /> 1 2,4-Trichlorobenzene 84 82 48-112 3 30 <br /> Naphthalene 87 84 55-113 3 30 <br /> Hexachlorobutadiene 77 76 23-122 1 30 <br /> Hexachlorocyclopentadiene 69 64 10-146 7 3C <br /> 2-Chloronaphthalene 80 79 60-107 2 30 <br /> Acenaphthylene 90 89 61-121 2 30 <br /> Dimethylphthalate 60 60 14-118 1 30 <br /> 2,6-Dinitrotoluene 88 90 30-136 2 30 <br /> Acenaphthene 94 91 59-12C 4 30 <br /> 2 4-Dinitrotoluene 96 95 25-160 0 30 <br /> Fluorene 87 86 52-121 1 30 <br /> 4-Chlorophenyl-phenylether 90 87 62-113 3 30 <br /> Diecnylphthalate 79 79 55-tu9 u 30 <br /> N-Nitrosodiphenylamine 90 90 65-103 0 30 <br /> 4-Bromophenyl-phenylether 97 96 64-113 0 30 <br /> Hexachlorobenzene 97 98 62-117 1 30 <br /> Phenanthrene 88 88 56-125 0 30 <br /> Anthracene 88 87 60-117 0 30 <br /> Di-n-butylphthalate 84 84 62-111 1 30 <br /> Fluoranthene 84 84 61-112 0 30 <br /> Pyrene 95 94 63-117 1 30 <br /> Butylbenzylphthalate 86 86 52-129 D 30 <br /> Benzo(a)anthracene 92 90 72-112 2 30 <br /> Chrysene 94 93 71-111 1 30 <br /> 3,3'-Dichlorobenzidine 87 76 26-116 14 30 <br /> bis(2-Ethylhexy1)phthalate 93 94 61-118 0 30 <br /> *-Outside of speClfication <br /> (l) 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 spil,e added <br />