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� Lancaster <br /> • Laboratories Analysis Report <br /> ' 2425 New Holland Pike PO Box 12425 Lancaster PA 17605.2425•717 656 2300 Fax 717 6562681 www lanoasterlabs com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 868176 <br /> Reported 03/25/04 at 10 42 AM <br /> Sample Matrix Quality Control. <br /> MS MSD MS/MSD RPD BKG DUP DUP yup <br /> ' RPD <br /> Analysis NeEa1e RSC RSC Limits RPD MAX Conc Conc RPD Max <br /> TPH-GRO - Waters 122 63-154 <br /> Batch number P040773AA Sample number(s) 4233965-4233968 <br /> ' Ethanol 78 91 41-155 15 30 <br /> Methyl Tertiary Butyl Ether 94 94 69-134 0 30 <br /> di-Isopropyl ether 92 91 75-130 1 30 <br /> Ethyl t-butyl ether 93 93 78-119 0 30 <br /> t-Amyl methyl ether 95 96 77-117 1 30 <br /> ' t-Butyl alcohol 96 95 51-147 1 30 <br /> Benzene 98 98 83-128 0 30 <br /> 1,2-Dichloxoethane 93 93 73-136 1 30 <br /> Toluene 100 100 83-127 1 30 <br /> 1,2-Dibromoethane 94 95 78-120 1 30 <br /> ' Ethylbenzene 100 100 82-129 1 30 <br /> Xylene (Total) 100 101 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name Methanol and Ethanol <br /> Batch number 0407SO027A <br /> Acetone <br /> ' 4233965 114 <br /> 4233966 10B <br /> 4233967 107 <br /> 4233968 108 <br /> ' Blank 147 <br /> LCS 148 <br /> Ms 107 <br /> MSD 106 <br /> Limits 80-132 <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 04076A07C <br /> Trifluorotoluene-P <br /> 4233965 81 <br /> Blank 81 <br /> LCS 101 <br /> LCSD 101 <br /> MS 102 <br /> ' MSD 103 <br /> Limits 57-146 <br /> Analysis Name TPH-GRO - Waters <br /> ' Batch number 04076AOSA <br /> Trifluorotoluene-F <br /> 4233966 126 <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 />