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1 <br /> Lancaster Analysis Report <br /> Laboratories Y <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425•717-656.2300 Fex 717-656-2681•WWW lancasterlabs cOm <br /> Page 1 of 7 <br /> Quality Control summary <br /> Client Name ChevronTexaco Group Number 943162 <br /> Reported 05/23/05 at: 01 43 PM <br /> Matrix QC may not be reported if site-speclfic 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 to the <br /> method <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unxts %RHC %RHC Limits RPD RFD Max <br /> Batch number 051330015A Sample number(s) 4522833 64-125 <br /> TPH-DRO CALUPT(Waters) N D 29 ug/l 88 <br /> Batch number 05133112601A N Sample numbeer4(ss) 4522033 87 86 54-113 1 14 <br /> TRPH 418 1 <br /> Batch number 051331848004 Sample number(s) 4522834 g7-111 <br /> Cadmium 95-112 <br /> D 0 00097 mg/1 104 95-112 <br /> Chromium N D 0 0048 mg/l 99 93-110 <br /> iad N n 0 0084 mg/l 101 93-110 <br /> ckel N D 0 0058 mg/l 101 94-112 <br /> Zinc N D 0 0053 mg/1 100 <br /> Batch number 05133WAA026 Sample number(s) 4522833 57-99 <br /> Aniline N D 1 ug/l 77 48-114 <br /> 4-Chloroaniline N D 1 ug/1 80 65-110 <br /> Dibenzofuran N D 1 ug/l 86 <br /> N D 1 ug/l 86 66-104 <br /> 2-Nitroaniline <br /> 2-Methylnaphthalene N D 1 ug/l 96 73-115 <br /> 3-Nitroanilane N D 1 ug/l 93 69 64-113107 <br /> 4-Nitroaniline N D 1 ug/ 83 <br /> 1 ug/1l 93 70-115 <br /> 2,4,5-Trichlorophenol N D 63-112 <br /> 2-Chlorophenol N D 1 ug/l 91 30-57 <br /> Phenol N D 1 ug/l 41 <br /> 2-Nitrophenol <br /> N D 1 u9/1 i10 63-119 <br /> N D 1 ug/l 86 60-107 <br /> 2,4-Dimethylphenol 1 ug/1 94 66-110 <br /> 2,4-Dichlorophenol N D 99-119 <br /> 4-Chloro-3-methylphenol N D 1 09/1 93 <br /> 99 69-111 <br /> 2 4,6-Trichlorophenol N D 1 ug/l 44-130 <br /> 2,4-Dinitrophenol N D 20 ug/l 99 16-75 <br /> 4-Nitrophenol N D 10 ug/l 36 56-130 <br /> 4,6-Dinitro-2-methylphenol N D 5 ug/l 99 48-108 <br /> Pentachlorophenol N D 3 ug/1 89 39-84 <br /> N-Nitrosodimethylamine N D 2 ug/1 55 <br /> bis(2-Chloroethyl)ether N D 1 ug/l 82 57-110-102 <br /> 1,3-Dichlorobenzene N D 52 <br /> 1 ug/l 88 52-103 <br /> 1 4-Dichlorobenzene N D 1 ug/1 86 58-99 <br /> 1,2-Dichlorobenzene N D 1 ug/l 84 55-130 <br /> bis(2-Chlorotsopropyllether N D 1 ug/1 90 33-106 <br /> Hexachloroethane N D 1 ug/l 84 56-109 <br /> N-Nitroso-di-n-propylamine N D 1 ug/1 84 61-111 <br /> Nitrobenzene N D 1 ug/l 85 <br /> N D 1 ug/l 79 6 -105 <br /> Isop3latune 69-119 <br /> bis(2-Chloroethoxy)methane N D 1 ug/l 91 <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 />