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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:717-656-2681•W W W.lawasterlabs.com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 911494 i <br /> Reported: 09/22/04 at 11:15 .AM 1 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DIIP Dup RPD <br /> Analysis Name %RSC REC Limits RPD MAX Cone Cone RPD Fra_x� <br /> t-Amyl methyl ether 100 101 77-117 1 30 <br /> t-Butyl alcohol 92 93 51-147 2 30 <br /> Benzene 104 103 83-128 1 30 <br /> 1,2-Dichloroethane 107 112 73-136 4 30 <br /> Toluene 102 104 837127 2 30 <br /> 1,2-Dibromoethane 98 100 78-120 2 30 <br /> Ethylbenzene 102 103 82-129 1 30 <br /> Xylene (Total) 99 100 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH-GRD Waters <br /> Batch number: 04257A16A I <br /> Trifluorotoluene-F <br /> 4349358 108 <br /> 4349359 109 <br /> Blank 108r j <br /> LCS 113 <br /> LCSD 112 <br /> MS 111 <br /> Limits:. 57-146 <br /> Analysis Name: TPH-GRO - Maters <br /> Batch number: 04257A16B <br /> Trifluorotoluene-F <br /> 4349357 110 <br /> Blank 109 <br /> LCS 113 <br /> LCSD 112 <br /> MS 111 + <br /> Limits: 57-146 f <br /> i <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 04258A16A <br /> Trifluorotoluene-F <br /> I� <br /> 4349360 114 <br /> Blank 108 <br /> LCS 113 <br /> LCSD 112 <br /> MS 112 <br /> Limits: 57-146 <br /> Analysis Name: BTEX+5 Oxygenates+EDC+EDB+ETOH <br /> Batch number: Z042603AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <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 /> J <br /> f� <br />'t <br />