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Lancaster <br /> Analysis nalysls Repor# <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425•717 656 2300 Fax 717-656.2681-www lancasterlabs Cpm <br /> Page I of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 858473 <br /> Reported 07/21/03 at 12 12 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unite $REC %REC Lxmi to RPD RPD Max <br /> Batch number 0319OA07B Sample number(s) 4077855-4077858 <br /> TPH-GRO - Waters N D 50 u9/1 93 97 70-130 4 30 <br /> Batch number 031920002A Sample number(s) 4077856-4077858 <br /> Methanol (by Direct Injection) N D 200 ug/l Be 78-114 <br /> Batch number P031961AB Sample number(s) 4077855-4077856 <br /> Ethanol N D 50 ug/1 96 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/1 87 77-127 <br /> di-Isopropyl ether N D 5 ug/l Be 74-125 <br /> Ethyl t-butyl ether N D 5 ug/1 89 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 86 79-113 <br /> t-Butyl alcohol N D 5 ug/l 90 53-147 <br /> Benzene N D 5 ug/l 89 85-117 <br /> Toluene N D 5 ug/l 89 85-115 <br /> Ethylbenzene N D 5 ug/1 86 82-119 <br /> Xylene (Total) N D 5 ug/l Be 84-120 <br /> Batch number P031961AC Sample number(s) 4077857-4077858 <br /> Ethanol N ❑ 50 ug/l 96 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 87 77-127 • <br /> di-Isopropyl ether N D 5 ug/l Be 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 89 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 86 79-113 <br /> t-Butyl alcohol N D 5 ug/1 90 53-147 <br /> Benzene N D 5 ug/1 89 85-117 <br /> Toluene N D 5 ug/1 89 85-115 <br /> Ethylbenzene N D 5 ug/l 86 82-119 <br /> Xylene (Total) N ❑ 5 ug/l 88 84-120 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP DUP <br /> RPD <br /> Analysia Name %REC %REC Limits RPD W Cone Conc RPD Max <br /> Batch number 03190A07B Sample number(s) 4077855-4077858 <br /> TPH-GRO - Waters 113 70-130 <br /> Batch number 031920002A Sample number(s) 4077856-4077858 <br /> Methanol (by Direct Infection) 68 88 78-116 0 20 <br /> Batch number P031961AB Sample number(s) 4077855-4077856 <br /> Ethanol 116 112 34-163 3 30 <br /> Methyl Tertiary Butyl Ether 108 87 69-134 23 30 <br /> di-Isopropyl ether 111 90 75-130 21 30 <br /> Ethyl t-butyl ether 109 88 73-123 21 30 <br /> t-Amyl methyl ether 109 87 77-117 23 30 <br /> t-Butyl alcohol 120 98 39-155 21 30 <br /> Benzene 116 93 83-128 22 30 <br /> Toluene 113 93 83-127 20 30 <br /> Ethylbenzene 112 89 82-134 23 30 <br /> Xylene (Total) 113 91 82-130 21 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 />