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y • <br /> i <br /> Lancaster r <br /> aLs Laboratories Analysis Repo t <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717.656-2300 Fax:717-656-2681•wWw.fancasterlabs.com <br /> Page 3 of 6 <br /> Qualityp,Control Summary <br /> Client Name: ChevronTexaco Group Number: 957863 <br /> Reported: 09/15/05 at 01;23 PM <br /> Sample Matrix Quality Control <br /> M5 MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %RSC Limits RPD MAX Conc Conc RPD Max <br /> t-Butyl alcohol 99 97 56-134 2 30 <br /> Benzene 103 101 83-128 2 30 <br /> 1,2-Dichloroethane :107 104 70-143 3 30 <br /> Toluene 107 104 83-127 2 30 <br /> 1,2-Dibromoethane 96 95 78-120 1 30 <br /> Ethylbenzene 107 104 82-129 3 30 <br /> Xylene (Total) 108 104 82-130 4 30 <br /> Batch number: Z052504AA Sample number(s) : 4596144 <br /> Methyl Tertiary Butyl Ether 102 101 69-134 1 30 <br /> Benzene 103 103 83-128 0 30 <br /> Toluene 106 104 83-127 1 30 <br /> Ethylbenzene 105 104 82-129 1 30 <br /> Xylene (Total) 104 103 82-130 1 30 <br /> Surrogate Quality Control <br /> alysis Name: TPH Fuels by GC (Waters) <br /> tch number: 052460003A <br /> Chlorobenzene Orthoterphenyl <br /> 4596145 90 101 <br /> 4596146 102 100 <br /> 4596147 69 98 <br /> 4596148 179* 87 <br /> 4596149 88 86 <br /> 4596150 85 97 <br /> 4596151 89 97 <br /> 4596152 272* 92 <br /> 4596153 46 117 <br /> 4596154 86 9B <br /> 4596155 93 100 <br /> Blank 86 94 <br /> LCS 94 108 <br /> LCSD 98 113 <br /> Limits: 14-141 37-146 <br /> Analysis Name: TPH - DRO CA LUFT (Waters) <br /> Batch number: 052460004A <br /> orthoterphenyl <br /> 4596145 88 <br /> 4596146 81 <br /> 4$96147 86 <br /> 4596148 76 <br /> 4596149 79 <br /> 4596150 84 <br /> 4596151 86 <br /> 4596152 132 <br /> 4596153 93 <br /> 4596154 67 <br /> *-Outside of specification <br /> (1) 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 />