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Analysis Report <br /> Lancaster <br /> • Laboratories <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 875698 <br /> Reported 11/28/03 at 09 38 AM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analyses Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number 03325AO7C Sample number(s) 4168530-4168533 <br /> TPH-GRO - Waters N D 50 ug/1 IOB 70-130 <br /> Batch number 033280008A Sample number(s) 4168530-4168533 <br /> Methanol (by Direct Injection) N D 200 ug/l 110 78-114 <br /> Batch number P033251AA Sample numbers) 4168530-4168533 <br /> Ethanol N D 50 ug/1 80 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/1 96 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 88 74-125 <br /> Ethyl t-butyl ether N D 0 5 ug/1 92 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 97 79-113 <br /> t-Butyl alcohol N D 5 ug/l 87 53-147 <br /> Benzene N D 0 5 ug/l 101 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 95 77-132 <br /> Toluene N D 0 5 ug/l 98 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 96 81-114 <br /> *thylbenzene N D 0 5 ug/l 99 82-119 <br /> ylene (Total) N D 0 5 ug/l 100 84-120 <br /> Batch number P033271AA Sample number(s} 4168530-4168532 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/1 96 77-127 <br /> t-Amyl methyl ether N D 0 5 ug/l 913 79-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Anal sxs Name $REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 03325AO7C Sample number(s) 4168530-4168533 <br /> TPH-GRO - Waters 101 100 63-154 1 30 <br /> Batch number 033280008A Sample number(s) 4168530-4168533 <br /> Methanol (by Direct Injection) 73 96 73-117 21* 20 <br /> Batch number P033251AA Sample number(s) 4168530-4168533 <br /> Ethanol 80 81 38-149 1 30 <br /> Methyl Tertiary Butyl Ether 97 98 69-134 1 30 <br /> di-Isopropyl ether 89 91 75-130 2 30 <br /> Ethyl t-butyl ether 94 95 78-119 1 30 <br /> t-Amyl methyl ether 100 98 77-117 2 30 <br /> t-Butyl alcohol 92 95 44-150 3 30 <br /> Benzene 107 107 83-128 0 30 <br /> 1,2-Dichloroethane 97 98 73-136 1 30 <br /> *-Outside of specification <br /> i(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 717 656 24;91 2216 R.V 3/1n/na <br />