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Analysis + • • <br /> Lancaster Laboratories <br /> Where quality is a saence <br /> Page 3 of 7 <br /> Quality Control Summary <br /> Client Name- ChevronTexaco Group Number. 828908 <br /> Reported 11/13/02 at 01-47 PM <br /> Laboratory Compliance Quality Control. <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Mlvaia Name Result Mh units $RSC %REC Limits R1P RPD Max <br /> Trchloroethene N D 1 —ug-Ti— 99 87-117 <br /> 1,2-Dichloropropane N D 1 ug/l 97 80-117 <br /> Dibromomethane N D 1 ug/l 103 87-117 <br /> Bromodichloromethane N D 1 u9/1 101 83-121 <br /> Toluene N D 5 ug/l 107 85-115 <br /> 1,1,2-Trichloroethane N D 8 ug/l 104 86-120 <br /> Tetrachloroethene N D 8 ug/l 105 79-136 <br /> 1,3-Dichloropropane N D 1 ug/I 105 84-119 <br /> Dibromochloromethane N D 1 ug/l 95 78-119 <br /> 1,2-Dxbromoethane N D 5 ug/l 100 81-114 <br /> Chlorobenzene N D 8 ug/1 99 85-115 <br /> 1,1,1,2-Tetrachloroethane N D 1 ug/l 96 83-121 <br /> Ethylbenzene N D 5 ug/l 106 82-119 <br /> m+p-Xylene N D 5 u9/1 108 84-120 <br /> o-Xylene N D 5 u9/1 104 84-120 <br /> Styrene N D 1 ug/l 106 77-125 <br /> Bromoform N D 1 u9/1 91 63-122 <br /> Isopropylbenzene N D 1 ug/l 101 80-120 <br /> 1,1,2,2-Tetrachloroethane N D 1 ug/l 101 72-119 <br /> Bromobenzene N D 1 ug/l 104 80-118 <br /> 1,2,3-Trichloropropane N D 1 ug/1 104 76-124 <br /> n Propylbenzene N D 1 ug/l 103 75-124 <br /> -Chlorotoluene N D 1 ug/l 93 80-120 <br /> ,3,5-Trimethylbenzene N D 1 ug/1 101 78-122 <br /> 4-Chlorotoluene N D 1 ug/l 97 80-118 <br /> tert-Butylbenzene N D 1 ug/1 91 74-121 <br /> 1,2,4-Trimethylbenzene N D 1 ug/l 103 79-123 <br /> sec-Butylbenzene N D 1 u9/1 99 69-127 <br /> p-Isopropyltoluene N D 1 ug/l 98 72-126 <br /> 1,3-Dichlorobenzene N D 1 ug/l 104 82-119 <br /> 1,4-Dichlorobenzene N D 1 ug/l 101 84-116 <br /> n-Butylbenzene N D 1 ug/l 99 60-131 <br /> 1,2-Dichlorobenzene N D 1 ug/l 100 84-117 <br /> 1,2-Dibromo-3-chloropropane N D 2 ug/l 96 59-120 <br /> 1,2,4-Trichlorobenzene N D 1 u9/1 87 67-121 <br /> Hexachlorobutadaene N D 2 ug/l 91 47-126 <br /> Naphthalene N D 1 ug/l 95 64-121 <br /> 1,2,3-Trichlorobenzene N D 1 ug/1 95 69-121 <br /> Acetone N D 6 ug/l 90 45-170 <br /> Carbon Disulfide N D 1 ug/1 110 67-143 <br /> 2-Butanone N D 3 ug/l 107 58-141 <br /> trans-1,3-Dichloropropene N D 1 ug/l 98 72-116 <br /> cis-1,3-Dichloropropene N D 1 ug/l 95 78-114 <br /> 4-Methyl-2-pentanone N D 3 ug/1 104 63-130 <br /> 2-Hexanone N D 3 ug/l 110 53-141 <br /> Xylene (Total) N D 5 ug/i 106 84-120 <br /> 2-Chloroethyl vinyl Ether N D 2 ug/l 101 57-131 <br /> Freon 113 N D 2 ug/l 106 78-139 <br /> Batch number N023082AB Sample number(s) 3930713-3930714 <br /> Methyl t-butyl ether N D 5 ug/l 96 77-127 <br /> Benzene N D 5 ug/l 106 85-117 <br /> Toluene N D 5 ug/l 107 85-115 <br /> Ethylbenzene N D 5 ug/l 106 82-119 <br /> Xylene (Total) N D 5 ug/l 106 84-120 <br /> *-Outside of specification <br /> 0]) 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 /> Lancaster Laboratories Inc <br /> M E M B E R 2425 New Holland Pike <br /> Po sox 12425 <br /> Lancaster PA 17605-2425 <br /> 717 656 2300 Fax 717 656 2691 2216 Rev 9/11100 <br />