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Lancaster <br /> Laboratories n a I ysis Rein ort <br /> 2425 Naw Holland Pike PO Bax 12425 Lancaster,PA 17605-242 5•717 656-2300 Fax 717-656-2681•www lancasterlabs em <br /> Page 4 of 7 <br /> Quality Control Summary <br /> Client Name. ChevronTexaco Group Number 854136 <br /> Reported 06/16/03 at 10 47 PM ' <br /> Sample Matrix Quality Control <br /> MS MSD NS/MSD RPD BKG DUP DUP DUP <br /> RPD <br /> Analysis Name RBC RSCiI, mits RPD MAX Coag Conc RM Max <br /> I <br /> Batch number 031551848005 Sample number(s) 4054925 <br /> Cadmium 103 103 78-121 0 20 N D N D 0 (1) 20 <br /> Chromium 103 103 80-124 0 20- N D N D 0 (1) 20 <br /> Lead 103 102 75-125 1 20 N D N D 0 (1) 20 <br /> Nickel 101<" 101 85-116 0 20 N D N D 0 (1) 20 <br /> Zinc 103 103 80-120 0 20 0 0051 0 0057 11 (1) 20 <br /> Batch number 03155A07B Sample number(s) 4054923-4054924,4054926-4054927 <br /> TPH-GRO - Waters 103 70-130 <br /> Batch number 03156112601A Sample number(s) 4054924 <br /> TRPH 418 1 1 1 1 1 3 (1) 34 <br /> Batch number N031561AB Sample number(s) 4054924 <br /> Ethanol 94 91 34-163 2 30 <br /> Methyl Tertiary Butyl Ether 96 95 69-134 1 30 <br /> di-Isopropyl ether 91 91 75-130 0 30 <br /> Ethyl t-butyl ether 91 92 73-123 1 30 <br /> t-Amyl methyl ether 91 92 77-117 1 30 <br /> t-Butyl alcohol 92 92 39-155 0 30 <br /> Dichlorodifluoromethane 155 151 62-169 3 30 • <br /> Chloromethane 107 107 66-142 0 30 <br /> Vinyl Chloride 113 110 64-148 2 30 <br /> Bromomethane 86 86 48-132 0 30 <br /> Chloroethane 91 91 58-136 0 30 <br /> Trichlorofluoromethane 119 118 64-154 1 30 <br /> 1,1-Dichloroethene 116 117 78-146 1 30 <br /> Methylene Chloride 104 103 80-126 1 30 <br /> trans-1,2-Dichloroethene 106 110 82-133 3 30 <br /> 1,1-Dichloroethane 102 103 79-135 1 30 <br /> 2,2-Dichloropropane 96 98 78-134 1 30 <br /> cis-1,2-Dichloroethene 108 109 83-126 1 30 <br /> Chloroform 104 103 77-133 0 30 <br /> Bromochloromethane 111 ill 55-136 0 30 <br /> 1,1,1-Trichloroethane 103 104 82-135 1 30 <br /> Carbon Tetrachloride 102 103 73-144 0 30 <br /> 1,1-Dichloropropene 110 109 87-127 1 30 <br /> Benzene 110 109 83-128 0 30 <br /> 1,2-Dichloroethane 100 100 73-136 0 30 <br /> Trichloroethene 109 110 75-135 1 30 <br /> 1,2-Dichloropropane 104 104 81-121 0 30 <br /> Dibromomethane 103 104 83-120 1 30 <br /> Bromodichloromethane 95 95 81-127 0 30 <br /> Toluene 103 103 83-127 1 30 <br /> 1,1,2-Trichloroethane 97 97 77-125 1 30 <br /> Tetrachloroethene _ 114_ 114 _75-143 0 30 <br /> 1,3-Dichloropropane 97 97 82-121 0 30 <br /> Dibromochloromethane 86 68 73-119 2 30 <br /> 1,2-D2urumoecnane 95 97 78-12i) i 30 <br /> Chlorobenzene 104 104 83-120 1 30 <br /> 1,1,1,2-Tetrachloroethane 94 96 83-119 2 30 <br /> Ethylbenzene 103 103 82-134 1 30 <br /> m+p-Xylene 107 106 82-130 0 30 <br /> o-Xylene 105 104 62-130 0 30 <br /> *- Outside of specification <br /> (l) The result for one or both determinations was less than five times the ]AQ • <br /> (2) The background result was more than four times the spike added <br />