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Lancaster � <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasterlabs.com ' <br /> Page 4 of 14 <br /> Quality Control Summary ' <br /> Client Name: Chevron Group Number: 1127396 <br /> Reported: 01/21/09 at 05:10 PM <br /> Laboratory Compliance Quality Control ' <br /> Blank Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL** LOQ Units %RBC %RHC Limits RPD RPD Max <br /> Methyl Tertiary Butyl Ether N.D. 0.5 4 ug/l 106 73-119 ' <br /> di-Isopropyl ether N.D. 0.5 4 ug/l 99 70-123 <br /> Ethyl t-butyl ether N.D. 0.5 4 ug/l 104 74-120 <br /> t-Amyl methyl ether N.D. 0.5 4 ug/l 104 79-113 <br /> t-Butyl alcohol N.D. S. 80 ug/l 92 74-117 <br /> Dichlorodifluoromethane N.D. 2. 5 ug/l 110 45-158 <br /> Chloromethane N.D. 1. 5 ug/l 109 47-133 ' <br /> Vinyl Chloride N.D. 1. 5 ug/l 94 62-128 <br /> Bromomethane N.D. 1. 5 ug/l 106 50-128 <br /> Chloroethane N.D. 1. 5 ug/l 99 56-128 <br /> Trichlorofluoromethane N.D. 2. 5 ug/l 100 60-137 <br /> 1,1-Dichloroethene N.D. 0.8 5 ug/l 103 76-122 <br /> Methylene Chloride N.D. 2. 5 ug/l 96 85-120 <br /> trans-1,2-Dichloroethene N.D. 0.8 5 ug/l 101 83-117 <br /> 1,1-Dichloroethane N.D. 1. 5 ug/l 102 83-127 <br /> 2,2-Dichloropropane N.D. 1. 5 ug/l 117 74-130 <br /> cis-1,2-Dichloroethene N.D. 0.8 5 ug/l 101 84-117 I <br /> Chloroform N.D. 0.8 5 ug/l 108 77-125 <br /> Bromochloromethane N.D. 1. 5 ug/l 95 83-121 <br /> 1,1,1-Trichloroethane N.D. 0.8 5 ug/l 119 83-127 <br /> Carbon Tetrachloride N.D. 1. 5 ug/l 110 77-130 <br /> 1,1-Dichloropropene N.D. 1. 5 ug/l 104 84-116 ' <br /> Benzene N.D. 0.5 4 ug/l 101 78-119 <br /> 1,2-Dichloroethane N.D. 0.5 4 ug/l 118 69-135' <br /> Trichloroethene N.D. 1. 5 ug/l 105 87-117 <br /> 1,2-Dichloropropane N.D. 1. 5 ug/l 98 80-117 <br /> Dibromomethane N.D. 1. 5 ug/l 104 87-117 <br /> Bromodichloromethane N.D. 1. 5 ug/l 104 83-121 I <br /> Toluene . N.D. 0.5 4 ug/l 96 85-115 <br /> 1,1,2-Trichloroethane N.D. 0.8 5 ug/l 95 86-113 <br /> Tetrachloroethene N.D. 0.8 5 ug/l 96 76-118 <br /> 1,3-Dichloropropane N.D. 1. 5 ug/l 97 84-119 <br /> Dibromochloromethane N.D. 1. 5 ug/l 93 78-119 I <br /> 1,2-Dibromoethane N.D. 0.5 4 ug/1 96 81-114 <br /> Chlorobenzene N.D. 0.8 5 ug/l 96 85-115 <br /> 1,1,1,2-Tetrachloroethane N.D. 1. 5 ug/l 97 83-114 <br /> Ethylbenzene N.D. 0.5 4 ug/l 99 82-119 <br /> m+p-Xylene N.D. 0.5 4 ug/l 98 83-113 I <br /> o-Xylene N.D. 0.5 4 ug/l 97 83-113 <br /> Styrene N.D. 1. 5 ug/l 90 82-111 <br /> Bromoform N.D. 1. 5 ug/l 83 69-118 <br /> Isopropylbenzene N.D. 1. 5 ug/l 102 80-113 <br /> 1,1,2,2-Tetrachloroethane N.D. 1. 5 ug/l 94 72-119 <br /> Bromobenzene N.D. 1. 5 ug/l 95 82-110 I <br /> 1,2,3-Trichloropropane N.D. 1. 5 ug/l 100 78-117 <br /> n-Propylbenzene N.D. 1. 5 ug/l 101 78-119 <br /> 2-Chlorotoluene N.D. 1. 5 ug/l 95 78-115 <br /> 1,3,5-Trimethylbenzene N.D. 1. 5 ug/l 102 78-116 <br /> 4-Chlorotoluene N.D. 1. 5 ug/1 98 80-112 <br /> tert-Butylbenzene N.D. 1. 5 ug/l 98 74-114 <br /> 1,2,4-Trimethylbenzene N.D. 1. 5 ug/l 102 78-117 <br /> sec-Butylbenzene N.D. 1. 5 ug/l 100 72-120 <br /> p-Isopropyltoluene N.D. 1. 5 ug/l 103 72-116 <br /> 1,3-Dichlorobenzene N.D. 1. 5 ug/1 98 81-114 <br /> 1,4-Dichlorobenzene N.D. 1. 5 ug/l 98 84-116 <br /> *-Outside of specification <br /> **-This limit was used in the evaluation of the final result for the blank I <br /> (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br /> I <br />