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Lancaster <br /> Laboratories Analysis Report <br /> Oi.!tvwHolland Pike,PO Box 12425 Lancaster,PA 1 760 5-242 5•717-656 2300 Fax 717-656-2681•www lancasterlab5 com <br /> Pagel of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 889747 <br /> Reported 04/03/04 at 07 25 PM <br /> Matrix QC may not be reported if 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 1n the <br /> method <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result ML Units IRE IRE Limits RPD RPD Max <br /> Batch number 04089A08C Sample number(s) 4242260-4242265 <br /> TPH-GRO - Waters N D 50 ug/l 107 104 70-130 2 30 <br /> Batch number 0409OA07B Sample number(s) 4242266-4242269 <br /> TPH-GRO - Waters N D 50 ug/l 90 89 70-130 1 30 <br /> Batch number P040901AA Sample number($) 4242261-4242269 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 94 77-127 <br /> di-Isopropyl ether N D 2 ug/l 90 67-130 <br /> hyl t-butyl ether N D 2 ug/l 92 74-120 <br /> Amyl methyl ether N D 2 ug/1 98 79-113 <br /> Butyl alcohol N D 100 ug/l 94 57-141 <br /> Benzene N D 5 ug/l 95 85-117 <br /> 1,2-DYchloroethane N D 2 ug/l 92 77-132 <br /> Toluene N D 5 ug/l 97 85-115 <br /> 1,2-Dibromoethane N D 2 ug/l 99 81-114 <br /> Ethylbenzene N D 5 ug/l 98 82-119 <br /> Xylene (Total) N D 5 ug/l 100 84-120 <br /> Batch number P040902AA Sample number(a) 4242260 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 98 77-127 <br /> Benzene N D 5 ug/l 98 85-117 <br /> Toluene N D 5 ug/l 100 B5-115 <br /> Ethylbenzene N D 5 ug/1 101 82-119 <br /> Xylene (Total) N D 5 ug/1 103 84-120 <br /> Batch number P040911AA Sample number(s) 4242261 <br /> t-Butyl alcohol N D 100 ug/1 95 57-141 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 04089A08C Sample number(s) 4242260-4242265 <br /> TPH-GRO - Waters 129 63-154 <br /> Batch number 0409OA07B Sample number(s) 4242266-4242269 <br /> TPH-GRO - Waters 95 92 63-154 2 30 <br /> Batch number P040901AA Sample number(s) 4242261-4242269 <br /> *-Outside of specification <br /> The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br />