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Analysis Report <br /> k <br /> Lancaster Laboratories Page 2 of 3 <br /> Wherequality is a science <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 810536 <br /> Reported 06/13/02 at 04 15 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name $REC $RSC Limits RPD MAX Cone Conc RPD Max <br /> Benzene 103 99 78-134 4 30 <br /> 1,2-Dichloroethane 114 106 75-141 6 30 <br /> Toluene 105 109 78-133 4 30 <br /> 1,2-Di <br /> bromoethane 99 100 78-120 1 30 <br /> Ethylbenzene 106 109 82-134 2 30 <br /> Xylene (Total) 105 104 81-136 1 30 <br /> Batch number U021612AB Sample number(s) 3832740,3832742-3832747 <br /> Methyl t-butyl ether (2) 69-134 <br /> di-Isopropyl ether 104 68-133 <br /> Ethyl t-butyl ether 95 73-123 <br /> t-Amyl methyl ether 89 69-118 <br /> t-Butyl alcohol 96 51-148 <br /> Benzene 100 78-134 <br /> 1,2-Dachloroethane 113 75-141 <br /> Toluene 111 78-133 <br /> 1,2-Dabromoethane 101 78-120 <br /> Ethylbenzene 108 82-134 <br /> Xylene (Total) 108 81-136 <br /> Batch number U021621AB Sample number(s) 3632739,3832741 <br /> Methyl t-butyl ether (2) (2) 69-134 3 30 <br /> di-Isopropyl ether 106 110 68-133 4 30 <br /> Ethyl t-butyl ether 94 97 73-123 4 30 <br /> Amyl methyl ether 86 91 69-118 3 30 <br /> -Butyl alcohol 92 99 51-148 6 30 <br /> Benzene 96 101 78-134 2 30 <br /> 1,2-Dichloroethane 115 115 75-141 0 30 <br /> Toluene 107 111 78-133 4 30 <br /> 1,2-Dibromoethane 100 101 78-120 1 30 <br /> Ethylbenzene 98 107 82-134 7 30 <br /> Xylene (Total) 104 110 81-136 5 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - waters <br /> Batch number 02161A56A <br /> Trifluorotoluene-F <br /> 3832739 96 <br /> 3832740 109 <br /> 3832741 96 <br /> 3832742 98 <br /> 3832743 96 <br /> 3832744 102 <br /> 3632745 97 <br /> 3832746 96 <br /> 3832747 97 <br /> 3832748 99 <br /> Blank 99 <br /> LCS 109 <br /> LCSD 108 <br /> MS 117 <br /> Limits 67-135 <br /> *-Outside of specification <br /> 01) The result for one or both determinations was Iess than five times the LOQ <br /> 2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> MEMBER 2425 New Holland Pike <br /> PO Box 1 <br /> � Lancasterr PA PA 17605 2425 <br /> 717 656 2300 Fax 717 656 2681 2216 Rev 9111/00 <br />