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Lancaster <br /> Laboratories A n a I ys is Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425 717-656 2300 Fax 717-656-2681•www lancasteriabs com <br /> Page 5 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 884689 <br /> Reported 02/23/04 at 04 21 PM <br /> Sample Matrix Quality Control <br /> MS MSA MS/MSD RPD BICC DUP DUP Dup <br /> Analysis Name skREC RPD <br /> REC Limits RPD MAIC Conc Conc RPD Max <br /> TPH-GRO - Waters 99 97 63-154 2 30 <br /> Batch number 04049A07B Sample number(s) 4216138-4216139 <br /> TPH-GRO - Waters 99 97 63-154 2 30 <br /> Batch number N040432AC Sample number(s) 4216136 <br /> Methyl Tertiary Butyl Ether 105 96 69-134 9 30 <br /> Chloromethane 113 106 70-148 6 30 <br /> Vinyl Chloride 116 111 64-148 5 30 <br /> Bromomethane 105 97 52-140 8 30 <br /> Chloroethane 111 103 63-142 7 30 <br /> Trichlorofluoromethane 111 105 67-163 6 30 <br /> l,l-Dichloroethene 112 104 78-146 8 30 <br /> Methylene Chloride 103 96 79-133 7 30 <br /> trans-1,2-Dichloroethene 107 99 82-133 8 30 <br /> 1,1-Dichloroethane 108 99 85-135 9 30 <br /> cis-1,2-Dichloroethene 106 94 83-126 12 30 <br /> Chloroform 106 96 82-131 10 30 <br /> 1,1,1-Trichloroethane 107 96 82-135 9 30 <br /> Carbon Tetrachloride 111 101 73-144 9 30 <br /> Benzene 109 101 83-128 8 30 <br /> 1,2-Dichloroethane 100 91 73-136 9 30 . <br /> Trichloroethene 108 97 75-135 11 30 <br /> 1,2-Dichloropropane 106 98 81-121 9 30 <br /> Bromodichloromethane 102 94 83-121 8 30 <br /> Toluene 105 97 83-127 8 30 <br /> 1,1,2-Trichloroethane 96 88 77-125 9 30 <br /> Tetrachloroethene 109 101 75-143 8 30 <br /> Dibromochloromethane 96 a8 73-119 9 30 <br /> Chlorobenzene 104 96 83-120 8 30 <br /> Ethylbenzene 108 99 82-129 9 30 <br /> m+p-Xylene 106 99 82-130 7 30 <br /> o-Xylene 105 97 82-130 8 30 <br /> 6romoform 84 77 64-119 a 30 <br /> 1 1,2,2-Tetrachloroethane 87 61 69-121 7 30 <br /> 1,3-Dichlorobenzene 105 97 79-123 8 30 <br /> 1,4-Dichlorobenzene 102 95 81-122 7 30 <br /> 1,2-Dichlorobenzene 104 94 82-117 10 30 <br /> trans-1,3-Dichloropropene 98 89 75-117 9 30 <br /> Cis-1,3-Dichloropropene 104 93 76-117 11 30 <br /> Freon 113 122 112 73-166 9 30 <br /> Batch number P040481AA Sample number(s) 4216135,4216138-4216139 <br /> Methyl Tertiary Butyl Ether 91 91 69-134 1 30 <br /> Benzene 102 103 83-128 1 30 <br /> Toluene 95 98 83-127 3 30 <br /> Ethylbenzene 95 96 82-129 1 30 <br /> Xylene (Total) 94 96 82-130 2 30 <br /> Surrogate Quality Control <br /> Analysis Name TCL SW846 Semivolatiles/Waters <br /> *- Outside of specification <br /> (1) The result for one or both determmaUons was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br />