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Inalysis Report <br /> Lancaster <br /> Laboratories <br /> Page 2 of 6 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 844064 <br /> Reported: 04/02/03 at 12 :56 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Methyl Tertiary Butyl Ether N.D. 125. ug/kg 90 75-125 <br /> di-Isopropyl ether N.D. 125. ug/kg 93 70-129 <br /> Ethyl t-butyl ether N.D. 125. ug/kg 90 71-124 <br /> t-Amyl methyl ether N.D. 125. ug/kg 85 70-122 <br /> t-Butyl alcohol N.D. 2500. ug/kg 89 46-158 <br /> Benzene N.D. 125. ug/kg 97 83-118 <br /> Toluene N.D. 125. ug/kg 97 81-116 <br /> Ethylbenzene N.D. 125. ug/kg 95 82-115 <br /> Batch number: Q030731AB Sample number(s) : 4008128-4008129 <br /> Ethylbenzene N.D. 125. ug/kg 95 82-115 <br /> Xylene (Total) N.D. 125. ug/kg 97 82-117 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BRG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 030690026A Sample number(s) : 4008127-4008129 <br /> TPH - DRO CA LUFT (Soils) (2) (2) 44-124 22* 20 <br /> Batch number: 030705708001 Sample number(s) : 4008127-4008129 <br /> Lead (2) (2) 75-125 7 20 853. 843. 1 20 <br /> Batch number: 0307OA33C Sample number(s) : 4008127-4008128 <br /> TPH-GRO - Soils 93 93 70-130 1 30 <br /> Batch number: 0307OA33D Sample number(s) : 4008129 <br /> TPH-GRO - Soils 93 93 70-130 1 30 <br /> Batch number: 03071A53B Sample number(s) : 4008126 <br /> TPH-GRO - Waters 126 70-130 <br /> Batch number: 030861848002 Sample number(s) : 4008126 <br /> Lead 107 107 75-125 0 20 N.D. N.D. 0 (1) 20 <br /> Batch number: P030722AA Sample number(s) : 4008126 <br /> Methyl Tertiary Butyl Ether (2) (2) 69-134 1 30 <br /> di-Isopropyl ether 94 95 75-130 1 30 <br /> Ethyl t-butyl ether 100 101 73-123 1 30 <br /> t-Amyl methyl ether 105 106 77-117 1 30 <br /> t-Butyl alcohol 109 109 39-155 0 30 <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 /> Lancaster Laboratories,Inc. <br /> M E M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax-717-6562681 7216 Rev. 10/21n2 <br />