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Lancaster Laborator, <br /> es <br /> z426 M" fro Pu Dai 12%29 � � r� , � � a rti o` er e��3 r,. s�- �-. �• ►�wanctr�attis ism <br /> Page 4 of 6 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 895616 <br /> Reported 05/24/04 at 01 46 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name $RBC $REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number N041392AA Sample number(s) 4271225 <br /> Methyl Tertiary Butyl Ether 94 94 69-134 0 30 <br /> Chloromethane 110 109 70-148 1 30 <br /> Vinyl Chloride 110 107 70-151 2 30 <br /> Bromomethane 103 101 52-140 2 30 <br /> Chloroethane 107 105 63-142 2 30 <br /> Trichlorofluoromethane 118 117 67-163 1 30 <br /> 1 1-Dichloroethene 116 114 78-146 2 30 <br /> Methylene Chloride 104 103 79-133 1 30 <br /> trans-1 2-Dichloroethene 107 106 82-133 1 30 <br /> 1,1-Dichloroethane 104 102 85-135 2 30 <br /> cis-1,2-Dichloroethene 105 101 83-126 4 30 <br /> Chloroform 102 104 82-131 1 30 <br /> 1,1,1-Trichloroethane 109 108 82-135 1 30 <br /> Carbon Tetrachloride 109 110 73-144 0 30 <br /> Benzene 104 103 83-128 1 30 <br /> 1,2-Dichloroethane 97 97 73-136 1 30 <br /> Trichloroethene 105 105 75-135 0 30 <br /> 1,2-Dichloropropane 101 100 81-121 2 30 <br /> Bromodlchloromethane 100 100 83-121 0 30 . <br /> Toluene 103 103 83-127 0 30 <br /> 1 1,2-Trichloroethane 91 92 77-125 1 30 <br /> Tetrachloroethene 104 104 75-143 0 30 <br /> Dibromochlorcmethane 93 93 73-119 0 30 <br /> Chlorobenzene 100 101 83-120 1 30 <br /> Ethylbenzene 103 103 82-129 0 30 <br /> m+p-Xylene 104 103 82-130 1 30 <br /> o-Xylene 103 102 82-130 1 30 <br /> Bromoform 90 88 64-119 3 30 <br /> 1 1,2,2-Tetrachloroethane 85 85 69-121 0 30 <br /> 1,3-Dichlorobenzene 103 102 79-123 1 30 <br /> 1,4-Dichlorobenzene 102 100 81-122 1 30 <br /> 1 2-Dichlorobenzene 100 99 82-117 1 30 <br /> trans-1,3-Dzchloropropene 93 94 75-117 0 30 <br /> cis-1 3-Dichloropropene 98 95 76-117 3 30 <br /> Freon 113 121 119 73-166 1 30 <br /> Batch number P041422AA Sample number(s) 4271224,4271227-4271228 <br /> Methyl Tertiary Butyl Ether 107 109 69-134 1 30 <br /> Benzene 99 103 83-126 4 30 <br /> Toluene 98 102 83-12� 3 30 <br /> Ethylbenzene 102 106 82-129 4 30 <br /> Xylene (Total) 100 104 82-130 4 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH - DRO CA LUFT (Waters) <br /> Batch number 041340005A <br /> Orthoterphenyl <br /> 4271225 91 <br /> *-Outside of specification <br /> (1) 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 />