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Lancaster <br /> Laboratories analysis Report <br /> 2425 New Holland Pike,PO Box 12425 Lanoaster PA 17605.2425•717 656 2300 Fax 717-656 2681•www lancasterlabs com <br /> Page 2 of 3 <br /> Quality Control Summary <br />' Client Name ChevronTexaco Group Number 864230 <br /> Reported 09/02/03 at 04 03 PM <br />' Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BSO DUP DUP Dup <br /> RPI) <br /> Anel ais Noma &EEC %R8C Limits RPD MAX Conc Conc RPD MAX <br /> t-Amyl methyl ether 104 105 77-117 1 30 <br /> ' t-Butyl alcohol 89 88 39-155 1 30 <br /> Benzene 108 107 83-128 1 30 <br /> 1,2-Dichloroethane 110 100 73-136 9 30 <br /> Toluene 97 99 83-127 2 30 <br /> 1,2-Dibromoethane 94 95 78-120 1 30 <br /> ' Ethylbenzene 103 91 82-134 13 30 <br /> Xylene (Total) 105 93 82-130 12 30 <br /> Batch number N032382AA Sample number(s) 4107519-4107521 <br /> Ethanol 81 87 34-163 7 30 <br /> ' Methyl Tertiary Butyl Ether 105 105 69-134 0 30 <br /> di-Isopropyl ether 106 108 75-130 0 30 <br /> Ethyl t-butyl ether 105 104 73-123 1 30 <br /> t-Amyl methyl ether 99 101 77-117 2 30 <br /> t-Butyl alcohol 82 82 39-155 0 30 <br /> Benzene 112 112 83-128 0 30 <br /> 1,2-Dichloroethane 99 100 73-136 1 30 <br /> Toluene 106 105 83-127 1 30 <br /> 1,2-Dibromoethane 94 95 78-120 1 30 <br /> Ethylbenzene 108 106 82-134 2 30 <br /> �Xylene (Total) 109 109 82-130 0 30 <br /> Surrogate Quality Control <br /> ' Analysis Name TPH-GRO - Waters <br /> Batch number 03237A07C <br /> Trifluorotoluene-F <br /> ' 4107SI9 85 <br /> Blank <br /> Blank 84 <br /> LCS 104 <br /> LCSD 106 <br /> MS 110 <br /> ' Limits S7-146 <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 03237ASSA <br /> Trifluorotoluene-F <br /> ' 4107520 91 <br /> 4107521 110 <br /> 4107522 93 <br /> Blank 94 <br /> ' LCS 97 <br /> LCSD 96 <br /> Limits 57-146 <br /> ' Analysis Name Methanol and Ethanol <br /> Batch number 032420017A <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 /> Ik1 <br /> - - - -- - - - <br />