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LancasterAnalysis Report <br /> { Laboratories Y <br /> 2425 Now H00and Pike PO Bou 12425 Lancaster PA 1 7805-242 5•717 656 23o0 Fax 717 656-2681 www lancasterlabs corn <br /> Page 2 of 9 <br /> Quality Control Summary <br /> Client Name ChecrronTexaco Group Number 877375 <br /> Reported 12/23/03 at 02 19 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result ML Units JREC %REC Limita RPD RPD Max <br /> t-Amyl methyl ether N D 0 5 ug/l 99 79-113 <br /> t-Butyl alcohol N D 5 ug/l 125 53-147 <br /> Benzene N D 0 5 ug/l 97 85-117 <br /> Toluene N ❑ 0 5 ug/l 96 85-115 <br /> Ethylbenzene N D 0 5 ug/1 97 82-119 <br /> Xylene (Total) N D 0 5 ug/1 97 84-120 <br /> Batchnumber P033442AA Sample number(s) 4177745,4177758-4177765 <br /> Ethanol ND 50 ug/l 134 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 u9/1 Be 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 91 74-125 <br /> Ethyl t-butyl ether N D 0 5 ug/l 90 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 89 79-113 <br /> t-Butyl alcohol N D 5 ug/l 101 53-147 <br /> Benzene N D 0 5 ug/l 88 85-117 <br /> Toluene N D 0 5 ug/l 87 85-115 <br /> Ethylbenzene N D 0 5 ug/l 87 82-119 <br /> Xylene (Total) N D 0 5 ug/1 88 84-120 <br /> Batch number P033451AA Sample number(s) 4177766-4177769 <br /> Ethanol N D 50 ug/l 127 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 89 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 92 74-125 <br /> Ethyl t-butyl ether N D 0 5 ug/l 91 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 90 79-113 <br /> t-Butyl alcohol N D 5 ug/l 107 53-147 <br /> Benzene N D 0 5 ug/l 88 85-117 <br /> Toluene N D 0 5 ug/l 87 85-115 <br /> Ethylbenzene N ❑ 0 5 ug/l Be 82-119 <br /> Xylene (Total) N D 0 5 ug/1 87 84-120 <br /> Batch number W033462AA Sample number(s) 4177732 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 99 98 77-127 2 30 <br /> Benzene N D 0 5 ug/l 96 94 85-117 2 30 <br /> Toluene N D 0 5 ug/l 97 94 85-115 3 30 <br /> Ethylbenzene N D 0 5 ug/l 95 93 82-119 2 30 <br /> Xylene (Total) N D 0 5 ug/1 96 94 84-120 2 30 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Nara %REC %REC Limits RPD MAS Conc Cone RPD Max <br /> Batch number 033420031A Sample number(s) 4177733-4177737 4177739-4177752 <br /> Methanol (by Direct In3ection) 100 104 73-117 4 20 <br /> Batch number 033420032A Sample number(s) 4177753-4177771 <br /> Methanol (by Direct Infection) 96 96 73-117 0 20 <br /> Batch number 03342A16A Sample number(s) 4177732-4177734,4177738,4177752-4177761 <br /> TPH-GRO - Waters 97 63-154 <br /> Batch number 03342AI&B Sample number(s) 4177741,4177747-4177751 <br /> TPH-GRO - Waters 97 63-154 <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 />