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Lancaster <br /> Laboratories <br /> Page I of 9 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 839664 <br /> Reported 03/04/03 at 06 05 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number 030310015A Sample number(s) 3986819-3986822 <br /> TPH - DRO CA LUFT (Waters) N D 50 ug/1 96 93 54-120 4 20 <br /> Batch number 03031A53A Sample number(s) 3986819-3986822 <br /> TPH-GRO - Waters N D 50 ug/l 106 74-116 <br /> Batch number 03031A53B Sample number(s) 3986818 <br /> TPH-GRO - Waters N D 50 ug/l 106 74-116 <br /> Batch number 0303�LWACO26 Sample number(s) 3986819 <br /> Aniline N D 1 ug/l 81 78 57-98 4 30 <br /> 4-Chloroaniline N D 1 ug/l Be 83 24-118 5 30 <br /> Dibenzofuran N D 1 ug/l 95 93 66-112 2 30 <br /> 2-Methylnaphthalene N ❑ 1 ug/l 91 90 54-112 1 30 <br /> 2-Nitroaniline N D 1 ug/l 97 96 79-128 1 30 <br /> Nitroaniline N D 1 ug/l 94 89 28-122 5 30 <br /> itroanaline N D 1 ug/l 86 82 63-119 5 30 <br /> 4,5-Trichlorophenol N D 1 ug/l 92 91 70-122 1 30 <br /> 2-Chlorophenol N D 1 ug/l 91 89 73-114 1 30 <br /> Phenol N D 1 ug/l 48 47 23-67 3 30 <br /> 2-Nitrophenol N D 1 u9/1 95 97 73-123 3 30 <br /> 2,4-Dimethylphenol N D 1 ug/1 86 86 67-105 0 30 <br /> 2,4-Dichlorophenol N D 1 ug/1 95 95 71-120 0 30 <br /> 4-Chloro-3-methylphenol N D 1 ug/l 97 99 74-119 2 30 <br /> 2,4,6-Trichlorophenol N D 1 ug/1 92 90 66-125 2 30 <br /> 2,4-Dinitrophenol N D 20 ug/1 75 76 35-135 1 30 <br /> 4-Nitrophenol N D 10 ug/1 39 39 17-75 0 30 <br /> 4,6-Dinitro-2-methylphenol N D 5 ug/l 88 86 46-144 2 30 <br /> Pentachlorophenol N D 3 ug/1 78 77 43-127 1 30 <br /> N-Nltrosodimethylamine N D 2 ug/l 66 62 42-85 5 30 <br /> bis(2-Chloroethyl)ether N D 1 ug/l 89 85 75-115 4 30 <br /> 1,3-Dichlorobenzene N D 1 ug/l 77 74 35-98 4 30 <br /> 1,4-Dichlorobenzene N D 1 ug/l 76 75 38-99 3 30 <br /> 1,2-Dichlorobenzene N D 1 ug/l 79 76 42-100 3 30 <br /> bis(2-Chloroisopropyl)ether N D 1 ug/l 110 107 65-153 3 30 <br /> Hexachloroethane N D 1 ug/l 66 64 20-97 4 30 <br /> N-Nitroso-dl-n-propylamine N D 1 ug/l 92 87 67-119 5 30 <br /> Nitrobenzene N D 1 ug/l 94 95 74-116 1 30 <br /> Isophorone N D 1 ug/l 92 92 68-109 0 30 <br /> bis(2-Chloroethoxy)methane N D 1 ug/l 105 103 75-125 2 30 <br /> 1,2,4-Trichlorobenzene N D 1 ug/l 81 82 40-106 0 30 <br /> Naphthalene N D i ug/1 93 93 58-10B 0 30 <br /> Hexachlorobutadiene N D 1 ug/1 70 68 18-103 3 30 <br /> Hexachlorocyclopentadiene N D 5 ug/l 76 67 5-156 14 30 <br /> *-Outside of specification <br /> The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> RA F- M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> A Lancaster PA 17605 2425 <br /> 717 656-2300 fax 717 656 2681 271E RPv ilvwm,) <br />