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IfLancastert <br /> Laboratories Analysis Re p or <br /> 025wNe.w Holland Pike Po Box 12425 Lancaster,PA 17605-2425•717 656 2300 Fax 717 656 2681•www lancastarlabs eom <br /> Page 4 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 862273 <br /> Reported 08/27/03 at 10 23 A!u[ <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP DUP <br /> RPD <br /> Analysis Name REC %REC Limits RPD MAX Conc Conc RPD Max <br /> 2,4,6-Trichlorophenol 88 7B 31-140 12 30 <br /> 2,4-Din�.trophenol 72 51 20-151 33* 30 <br /> 4-Nitrophenol 38 35 15-77 7 30 1 <br /> 4,6-Dinitro-2-methylphenol 88 68 13-151 25 30 <br /> Pentachlorophenol 66 54 5-141 19 30 <br /> N-Nitrosodimethylamine 68 65 40-88 5 30 <br /> bis(2-Chloroethyl)ether 82 81 63-114 1 30 <br /> 1,3-Dichlorobenzene 80 81 44-108 0 30 <br /> 1,4-Dichlorobenzene 77 78 42-105 1 30 <br /> 1,2-Dichlorobenzene 79 79 49-106 0 30 <br /> bis(2-Chloroisopropyl)ether 92 91 60-145 1 30 <br /> Hexachloroethane 72 70 20-116 2 30 <br /> N-Nitroso-di-n-propylamine 77 76 61-110 1 30 <br /> Nitrobenzene 85 86 43-133 1 30 <br /> Isophorone 82 82 44-127 0 30 <br /> bis(2-Chloroethoxy)methane 93 92 75-116 1 30 <br /> 1,2,4-Trichlorobenzene 84 84 53-113 0 30 <br /> Naphthalene 85 85 63-107 0 30 <br /> Hexachlorobutadiene 78 79 22-120 1 30 <br /> Hexachlorocyclopentadiene 77 76 5-130 1 30 <br /> Chloronaphthalene 84 84 64-114 1 30 <br /> enaphthylene 9* 14* 66-107 43* 30 <br /> imethylphthalate 9* 7* 17-127 28 30 <br /> 2,6-Dinatrotoluene 84 82 35-137 2 30 <br /> Acenaphthene 90 90 71-110 0 30 <br /> 2,4-Dinitrotoluene 91 89 43-145 3 30 <br /> Fluorene 81 80 52-121 2 30 <br /> 4-Chlorophenyl-phenylether 84 85 64-109 1 30 <br /> Dzethylphthalate 38* 34* 55-114 12 30 <br /> N-Nitrosodiphenylami.ne 81 79 69-105 2 30 <br /> 4-Bromophenyl-phenylether 91 89 70-109 1 30 <br /> Hexachlorobenzene 93 91 65-114 2 30 <br /> Phenanthrene 89 88 56-125 1 30 <br /> Anthracene 87 86 71-106 2 30 <br /> Di-n-butylphthalate 73 69* 71-107 5 30 <br /> Fluoranthene 83 81 70-104 2 30 <br /> Pyrene 99 96 67-112 3 30 <br /> Butylbenzylphthalate 75 72 69-115 5 30 <br /> Benzo(a)anthracene 92 90 72-108 2 30 <br /> Chrysene 92 90 73-108 2 30 <br /> 3,31 -nichlorobenzidine 80 74 8-113 8 30 <br /> bis(2-Ethylhexyl)phthalate 82 80 64-130 2 30 <br /> Di-n-octylphthalate 60 78 64-119 2 30 <br /> Benzo(b)fluoranthene 92 89 72-109 3 30 <br /> Benzo(k)fluoranthene 93 91 73-111 2 30 <br /> Benzo(a)pyrene 94 92 77-110 3 30 <br /> Indeno(1,2,3-cd)pyrene 97 94 69-115 2 30 <br /> Dibenz(a,h)anthracene 101 98 81-118 3 30 <br /> Benzo(g,h,i)perylene 100 97 72-114 3 30 <br /> 2-methylphenol 72 72 34-119 0 30 <br /> 4-methylphenol 68 68 11-144 0 30 <br /> Benzyl alcohol 83 82 61-89 1 30 <br /> Benzoic acid 38 37 6-60 3 30 <br /> Batch number 03223112601A Sample number(s) 4096277 <br /> *-Outside of specification <br /> 01) 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 />