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Lancaster. ort <br /> . Laboratories Analysis Rein <br /> New Holland Pike PO Box 12425 Lancaster,PA 17605-2425-717-656-2300 Fax 717-656-2681•www lanCasteriabs corn <br /> Page 4 of 6 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 873985 <br /> Reported 11/18/03 at 04 51 PNf <br /> Sample Matrix Quality Control <br /> MS MSD KS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name RSC %RSC LiMitS RPD NM CQnQ Conc RPD max <br /> Chloroform 98 99 82-131 1 30 <br /> 1,1,1-Trichloroethane 100 100 82-135 0 30 <br /> Carbon Tetrachloride 96 98 73-144 2 30 <br /> Benzene 101 102 83-128 2 30 <br /> 1,2-Dichloroethane 91 92 73-136 1 30 <br /> Trichloroethene 101 101 75-135 0 30 <br /> 1,2-Dlchloropropane 97 101 81-121 4 30 <br /> Bromodichloromethane 92 93 83-121 1 30 <br /> Toluene 97 100 83-127 3 30 <br /> 1,1,2-Trichloroethane 99 99 77-125 0 30 <br /> Tetrachloroethene 101 105 75-143 4 30 <br /> Dibromochloromethane 90 95 73-119 5 30 <br /> Chlorobenzene 97 99 83-120 2 30 <br /> Ethylbenzene 94 96 82-129 2 30 <br /> m+p-Xylene 99 101 82-130 2 30 <br /> o-Xylene 95 96 82-130 1 34 <br /> Bromoform 81 83 64-119 2 30 <br /> 1,1,2,2-Tetrachloroethane 91 92 69-121 1 30 <br /> 1,3-Dichlorobenzene 95 96 79-123 0 30 <br /> 1,4-Dichlorobenzene 95 96 81-122 1 30 <br /> 0Dichlorobenzene 91 93 82-117 2 30 <br /> ns-1,3-Dlchloropropene 87 87 75-117 0 30 <br /> -1,3-Dichloropropene 83 86 76-117 4 30 <br /> Freon 113 101 105 81-155 3 30 <br /> Batch number P033144AA Sample number(s) 4159231,4159234-4159235 <br /> Methyl Tertiary Butyl Ether 92 93 69-134 1 30 <br /> Benzene 102 103 83-128 1 30 <br /> Toluene 103 102 83-127 0 30 <br /> Ethylbenzene 102 101 82-129 1 30 <br /> Xylene (Total) 103 103 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TCL SW846 Semivolatiles/waters <br /> Batch number 03312WAG026 <br /> 2-Fluorophenol Phenol-d6 2,4,6-Tribromophenol Nitrobenzene-d5 <br /> 4159232 57 37 93 89 <br /> Blank 53 34 94 93 <br /> LCS 57 38 91 87 <br /> LCSD 62 - 41 96 91 <br /> Limits 23-94 10-80 40-136 54-124 <br /> 2-Fluorobiphenyl Terphenyl-d14 <br /> 4159232 87 84 <br /> Blank 86 82 <br /> LCS 65 88 <br /> LCSD 89 86 <br /> *-Outside of specification <br /> 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 />