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Lancaster <br /> . Laboratories ,�4 n a 1 ysis Report <br /> 25 New Holland Pike,Po Box 12425 Lancaster,PA 17605-2425•717-656-2300 Fax 717-65&2681•www lamaSterlabrsx 1 <br /> Page 5 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 MS/MSD RPD BRG DUP DtrP Dug <br /> RPD <br /> Anal is Name JUC %REC LimitsPDPD NM Coac CC Max <br /> Styrene 102 101 67-137 0 30 <br /> Bromoform 82 83 64-119 1 30 <br /> Isopropylbenzene 106 105 81-130 1 30 <br /> 1,1,2,2-Tetrachloroethane 90 90 69-121 0 30 <br /> Bromobenzene 103 103 83-121 0 30 <br /> 1,2,3-Trichloropropane 91 91 73-125 0 30 <br /> n-Propylbenzene 102 101 78-131 1 30 <br /> 2-Chlorotoluene 101 102 78-121 1 30 <br /> 1,3,5-Trimethylbenzene 100 100 74-130 0 30 <br /> 4-Chlorotoluene 101 102 81-123 0 30 <br /> tert-Butylbenzene 104 104 76-128 1 30 <br /> 1,2,4-Trimethylbenzene 100 100 75-132 1 30 <br /> sec-Butylbenzene 104 103 72-134 1 30 <br /> p-Isopropyltoluene 103 102 72-135 1 30 <br /> 1,3-Dichlorobenzene 103 103 82-128 0 30 <br /> 1,4-Dichlorobenzene 102 102 81-122 0 30 <br /> n-Butylbenzene 99 99 60-140 0 30 <br /> 1,2-Dichlorobenzene 100 101 82-117 0 30 <br /> 1,2-Dibromo-3-chloropropane 76 76 54-130 0 30 <br /> 1,2,4-Trichlorobenzene 99 99 66-121 0 30 <br /> Hexachlorobutadiene 98 93 52-132 5 30 <br /> phthalene 90 91 59-124 1 30 <br /> 2,3-Trachlorobenzene 100 99 66-121 1 30 <br /> cetone 60 62 26-148 3 30 <br /> Carbon Disulfide 115 116 76-150 0 30 <br /> 2-Butanone 83 83 42-140 0 30 <br /> trans-1,3-Dichloropropene 85 86 75-117 1 30 <br /> cis-1,3-Dichloropropene 96 97 76-117 1 30 <br /> 4-Methyl-2-pentanone 89 90 59-132 1 30 <br /> 2-Hexanone 79 79 53-134 1 30 <br /> 2-Chloroethyl Vinyl Ether 0• 0• 1-172 0 30 <br /> Freon 113 137 137 81-155 0 30 <br /> Batch number P031571AB Sample number(s) 4054923,4054926-4054927 <br /> Methyl Tertiary Butyl Ether 95 94 69-134 1 30 <br /> Benzene 101 101 83-128 0 30 <br /> Toluene 96 98 83-127 2 30 <br /> Ethylbenzene 96 96 82-134 0 30 <br /> Xylene (Total) 97 96 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 03155A07B <br /> Trifluorotoluene-F <br /> 4054923 85 <br /> 4054924 82 <br /> 4054926 84 <br /> 4054927 100 <br /> Blank 82 <br /> LCS 99 <br /> *-Outside of specification <br /> 1) The result for one or both determinations was less than five times the LOQ <br /> } The background result was more than four times the spike added <br />