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?i an <br /> Lancasteris Report <br /> Laboratories ,fit n a 1 ys p <br /> W2'5 New Holland Pike PO Box 12425 Lancaster,PA 17605-2425•717 656 2300 Fax 717-656-2681•www lancasterlab5 Com <br /> Pagel of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 861666 <br /> Reported 08/15/03 at 09 40 ANI <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC LlmltS RPD RPD Max <br /> Batch number 03216A16A Sample number(s) 4093686 <br /> TPH-GRO - Waters N D 50 ug/l 96 98 70-130 0 30 <br /> Batch number 03217A07C Sample number(s) 4093687-4093688 <br /> TPH-GRO - Waters N D 50 ug/l 100 70-130 <br /> Batch number 03217A16A Sample numbers) 4093689-4093696 <br /> TPH-GRO - Waters N D 50 ug/1 110 112 70-130 2 30 <br /> Batch number P032242AA Sample number(s) 4093666 <br /> Methyl Tertiary Butyl Ether N D 5 ug/1 104 77-127 <br /> Benzene N D 5 ug/1 114 85-117 <br /> Toluene N D 5 ug/l 107 85-115 <br /> Ethylbenzene N D 5 u9/1 109 82-119 <br /> Xylene (Total) N D 5 ug/l 110 84-120 <br /> Batch number P032251AA Sample number(s) 4093687-4093694,4093696 <br /> Ethanol N D 50 ug/l 91 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 101 77-127 <br /> di-Isopropyl ether N ❑ 5 ug/1 101 74-125 <br /> hyl t-butyl ether N D 5 ug/1 102 74-120 <br /> I*Amyl methyl ether N D 5 ug/l 109 79-113 <br /> -Butyl alcohol N D 5 ug/1 105 53-147 <br /> Benzene N D 5 ug/l 101 85-117 <br /> N D 5 ug/l 97 85-115 <br /> Toluene <br /> Tol enN D 5 ug/l 98 82-119 <br /> Ethylbenzene <br /> Xylene (Total) N D 5 ug/1 101 84-120 <br /> Batch number P032251AB Sample number(s) 4093695 43-159 <br /> Ethanol N D 50 ug/l 91 <br /> Methyl Tertiary Butyl Ether N D 5 ug/1 101 77-127 <br /> di-Isopropyl ether N D 5 u9/1 101 74-125 <br /> Ethyl t-butyl ether N D 5 ug/1 102 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 109 79-113 <br /> t-Butyl alcohol N A 5 ug/l 105 53-147 <br /> Benzene N D 5 ug/l 101 BS-117 <br /> Toluene N D 5 ug/1 97 85-115 <br /> N D 5 ug/1 98 82-119 <br /> Ethylbenzene <br /> ID <br /> 5 ug/1 101 84-120 <br /> Xylene (Total) N <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Cone Conc RPD Max <br /> Batch number 0321GA16A Sample number(s) 4093686 <br /> TPH-GRO - Waters 115 70-130 <br /> Batch number 03217A07C Sample number(s) 4093687-40936B8 <br /> TPH-GRO - Waters 101 109 70-130 6 30 <br /> Batch number 03217A16A Sample number(s) 4093689-4093696 <br /> TPH-GRO - Waters 123 70-130 <br /> I <br /> *-Outside of specification <br /> �I) 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 />