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Lancaster <br /> Report <br /> riesAnal ort <br /> Laborato Y p <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasterlabs.com <br /> Page 10 of 14 <br /> Quality Control Summary ' <br /> Client Name: Chevron Group Number: 1127396 <br /> Reported: 01/21/09 at 05:10 PM <br /> Sample Matrix Quality Control ' <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in conjunction with the duplicate <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name $REC %RSC Limits RPD MAX Cone Cone RPD Max <br /> 1,1-Dichloroethene 116 114 87-145 2 30 <br /> Methylene Chloride 101 98 79-133 2 30 <br /> trans-1,2-Dichloroethene 108 107 82-133 1 30 <br /> 1,1-Dichloroethane 110 107 85-135 3 30 <br /> 2,2-Dichloropropane 124 121 79-146 3 30 ' <br /> cis-1,2-Dichloroethene 106 104 83-126 2 30 <br /> Chloroform 114 112 83-139 2 30 <br /> Bromochloromethane 97 99 82-129 2 30 <br /> 1,1,1-Trichloroethane 126 121 81-142 4 30 <br /> Carbon Tetrachloride 123 115 82-149 7 30 ' <br /> 1,1-Dichloropropene 119 114 86-134 4 30 <br /> Benzene 106 104 83-128 3 30 <br /> 1,2-Dichloroethane 121 115 70-143 5 30 <br /> Trichloroethene 113 109 83-136 3 30 <br /> 1,2-Dichloropropane 101 99 83-129 3 30 <br /> Dibromomethane 107 101 82-128 5 30 <br /> Bromodichloromethane 108 104 80-137 3 30 <br /> Toluene 103 100 83-127 2 30 <br /> 1,1,2-Trichloroethane 96 93 77-125 3 30 <br /> Tetrachloroethene 105 103 78-133 2 30 <br /> 1,3-Dichloropropane 99 98 82-121 1 30 I <br /> Dibromochloromethane 94 93 80-128 2 30 <br /> 1,2-Dibromoethane 99 97 78-120 2 30 <br /> Chlorobenzene 102 99 83-120 3 30 <br /> 1,1,1,2-Tetrachloroethane 100 99 83-119 1 30 <br /> Ethylbenzene 107 104 82-129 3 30 <br /> m+p-Xylene 105 103 82-130 2 30 <br /> o-Xylene 103 101 82-130 2 30 <br /> Styrene 96 93 69-131 4 30 <br /> Bromoform 87 83 64-119 4 30 <br /> Isopropylbenzene 111 107 81-130 4 30 <br /> 1,1,2,2-Tetrachloroethane 93 92 73-121 2 30 <br /> Bromobenzene 101 99 83-121 2 30 <br /> 1,2,3-Trichloropropane 102 99 73-125 3 30 <br /> n-Propylbenzene 110 105 74-138 4 30 <br /> 2-Chlorotoluene 102 100 78-121 1 30 <br /> 1,3,5-Trimethylbenzene 108 105 75-132 3 30 <br /> 4-Chlorotoluene 102 100 81-123 2 30 <br /> tert-Butylbenzene 103 103 76-128 1 30 <br /> 1,2,4-Trimethylbenzene 108 105 80-125 3 30 <br /> sec-Butylbenzene 112 108 73-137 4 30 <br /> p-Isopropyltoluene 109 107 74-135 2 30 <br /> 1,3-Dichlorobenzene 102 100 79-123 2 30 <br /> 1,4-Dichlorobenzene 101 97 81-122 4 30 <br /> n-Butylbenzene 108 106 70-141 2 30 <br /> 1,2-Dichlorobenzene 99 97 82-117 2 30 <br /> 1,2-Dibromo-3-chloropropane 98 94 60-131 4 30 I <br /> 1,2,4-Trichlorobenzene 97 95 60-121 1 30 <br /> Hexachlorobutadiene 99 97 51-135 2 30 <br /> Naphthalene 93 92 57-125 1 30 <br /> 1,2,3-Trichlorobenzene 90 89 65-127 0 30 <br /> Acetone 100 95 54-150 5 30 <br /> Carbon Disulfide 103 102 69-146 1 30 <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 /> 1 <br /> I <br />