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LancasterAnalysis Report <br /> i Laboratories Y � <br /> 2425 New Holland Pike PQ Box 12425 Lancaster PA 17605-2425 717 656-2300 Fax 717 656 2681 www Iancasterl8t)S Com <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 893337 <br /> Reported 05/05/04 at 10 30 AM <br /> Matrix QC may not be reported tf site-specific QC samples were not <br /> submitted In these situations,to demonstrate precision and accuracy at <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified to the <br /> method <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 /> Batch number 0411SA16A Sample number(s) 4260021-4260025 <br /> TPH-GRO - Waters N D 50 u9/1 102 105 70-130 3 30 <br /> Batch number 041200015A Sample number(s) 4260022-4260024 <br /> Methanol (by Direct Injection) N D 1000 ug/l 104 76-119 <br /> Batch number P041194AA Sample number(s) 4260021 4260025 <br /> Methyl Tertiary Butyl Ether N D 2 ug/1 102 77-127 <br /> Ot-Arnyl <br /> i-Isopropyl ether N 0 2 ug/l 98 67-130 <br /> thyl t-butyl ether N D 2 ug/1 102 74-120 <br /> methyl ether N D 2 ug/l 108 79-113 <br /> t-Butyl alcohol N D 100 ug/1 88 57-141 <br /> Benzene N D 5 ug/l 103 85-117 <br /> Toluene N 0 5 ug/l 104 85-115 <br /> 82-119 <br /> Ethylbenzene N D 5 ug/l 105 g4-120 <br /> Xylene (Total} N D 5 ug/l 105 <br /> Batch number P041251AA Sample number(s) 4260022-4260024 46-145 <br /> Ethanol N D SDO ug/ 103 77-127 <br /> Methyl Tertiary Butyl Ether N D 2 ug/1 101 67-130 <br /> di-Isopropyl ether N D 2 ug/l 95 74-124 <br /> Ethyl t-butyl ether N D 2 ug/1 94 79-113 <br /> t-Amyl methyl ether N D 2 ug/l 100 <br /> t-Butyl alcohol N D 100 u9/1 105 57-141 <br /> N D 5 ug/1 101 85-117 <br /> Benzene N D 5 ug/l 94 85-115 <br /> Toluene82-119 <br /> Ethylbenzene N D 5 ug/l 95 84-120 <br /> Xylene (Total) N D 5 ug/1 97 <br /> Sample Matrix Quality Control <br /> MS MSD Ms/MSD RPD BKG DUP DUP Dup RPA <br /> Analysis Name %RRC %REC Limits RPD MAX Ccnc Conc RPD Maxim^ <br /> Batch number 0411BA16A Sample number(s) 42 0021-4260025 <br /> TPH-GRO - Waters 89 <br /> Batch number 04120001SA Sample number(s) 4260022-4260024 <br /> Methancl (by Direct Injection) 112 112 72-122 0 20 <br /> Batch number P041194AA Sample number(s) 4260021,4260025 <br /> Methyl Tertiary Butyl Ether 103 103 69-134 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 />