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Lancaster <br /> Laboratories Qnalys�_ <br /> s Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425•717 656-2300 Fax 717 656 2681 www Iamasterlabs Corn <br /> Page 4 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 943162 <br /> Reported 05/23/05 at 01 43 PM <br /> Sample Matrix Quality Control <br /> Ms MSR MS/MSD RPD SKO DUP DUP Dup RPD <br /> Analysis Name %REC $RHC Limits RPD MAX Cone Conc RPD Max <br /> 2-Nxtroaniline 100 100 63-125 0 30 <br /> 3-Nitroaniline 90 94 42-125 4 30 <br /> 4-Nitroaniline 81 86 51-113 6 30 <br /> 2,4,5-Trichlorophenol 94 96 31-139 3 30 <br /> 2-Chlorophenol 93 89 38-131 4 30 <br /> Phenol 44 46 12-79 5 30 <br /> 2-Nitrophenol 115 112 55-142 2 30 <br /> 2 4-Dimethylphenol 89 88 29-134 1 30 <br /> 2,4-Dichlorophenol 96 93 48-129 3 30 <br /> 4-Chloro-3-methylphenal 93 94 47-132 0 30 <br /> 2,4,6-Trichlorophenol 104 101 20-147 3 30 <br /> 2 4-Dinitrophenol 96 102 20-151 7 30 <br /> 4-Nitrophenol 34 34 10-95 1 30 <br /> 4,6-Dinitro-2-methylphenol 102 103 25-147 1 30 <br /> Pentachlorophenol 97 93 9-142 3 30 <br /> N-Nitrosodimethylamine 63 56 37-76 13 30 <br /> bis(2-Chloroethyl)ether 86 81 55-108 6 30 <br /> 1,3-Dichlorobenzene 90 as 59-101 6 30 <br /> 1,4-Dichlorobenzene 90 85 58-103 6 30 <br /> 1,2-Dichlorobenzene 88 84 61-96 5 30 <br /> bis(2-Chloroisopropyl)ether 93 86 58-135 7 30 <br /> Hexachloroethane 89 84 34-115 5 30 <br /> N-Nitroso-di-n-propylamxne 86 81 56-106 6 30 <br /> Nitrobenzene 86 83 41-134 4 30 <br /> Isophorone 82 79 47-121 4 30 <br /> bis(2-Chloroethoxy)methane 96 93 66-119 3 30 <br /> 1 2 4-Trichlorobenzene 92 89 67-102 3 30 <br /> Naphthalene 89 87 71-101 3 30 <br /> Hexachlorobutadiene 92 89 40-117 3 30 <br /> Hexachlorocyclopentadiene 91 94 19-136 2 30 <br /> 2-Chloronaphthalene 70 70 58-96 1 30 <br /> Acenaphthylene 100 100 61-121 1 30 <br /> Dimethylphthalate 89 88 4-131 1 30 <br /> 2 6-Dinitrotoluene 96 95 49-128 0 30 <br /> Acenaphthene 90 89 75-108 1 30 <br /> 2,4-Dinitrotcluene 104 103 43-147 1 30 <br /> Fluorene 91 89 52-121 2 30 <br /> 4-Chlorophenyl-phenylether 90 90 62-113 1 30 <br /> Diethylphthalate 89 89 49-114 0 30 <br /> N-Nitrosodiphenylamine 94 89 65-103 5 30 <br /> 4-Bromophenyl-phenylether 93 88 64-113 6 30 <br /> Hexachlorobenzene 91 90 62-11'7 1 30 <br /> Phenanthrene 91 87 56-125 4 30 <br /> Anthracene 90 89 74-106 1 30 <br /> Di-n-butylphthalate 96 92 62-111 4 30 <br /> Fluoranthene 88 85 61-112 3 30 <br /> Pyrene 98 93 63-117 4 30 <br /> Butylbenzylphthalate 102 100 61-114 2 30 <br /> Benzo(a)anthracene 94 96 72-112 2 30 <br /> Chrysene 97 92 71-111 5 30 <br /> 3,3'-Dichlorobenzidine 51 59 26-126 15 30 <br /> bis(2-Ethylhexyl)phthalate 107 105 61-118 2 30 <br /> Di-n-octylphthalate 93 94 55-119 0 30 <br /> Benzo(b)fluoranthene 77 168* 69-114 74* 30 <br /> Benzo(k)fluoranthene 96 176* 68-117 59* 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 />