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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Sox 12425 Lancaster PA 17605.2425•717 656-2300 Fax 717 656-2681•WWW 1a11caSterlabs aom • <br /> Pagel of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 916038 <br /> Reported 10/26/04 at 12 20 AM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> nibmitted In these sltna110ns 10 denlonztrale precision and accilracv 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 MDL Units $RSC %REC Limits RPD RPD Max <br /> Batch number 04287A56A Sample number(s) 4376273-4376275 <br /> TPH-GRO - Waters N D 50 ug/1 119 120 70-130 1 30 <br /> Batch number 04290A07A Sample number(s) 4376268-4376269 <br /> TPH-GRO - Waters N D 5o ug/1 109 96 70-130 12 30 <br /> Batch number 0429OA07B Sample number s) 4376270-4376272 <br /> TPH-GRO - Waters N D 50 ug/l 109 96 70-130 12 30 <br /> Batch number Z042952AA Sample number(s) 4376268 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 91 77-127 <br /> Benzene N D 5 ug/1 94 85-117 <br /> Toluene N D 5 ug/l 98 85-115 <br /> Ethylbenzene N D 5 u9/1 99 82-119 <br /> Xylene (Total) N D 5 ug/l 98 83-113 <br /> Batch number Z042961AA Sample number(s) 4376269-4376270 4376272 <br /> Ethanol N D 500 ug/l 98 46-145 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 98 77-127 <br /> di-Isopropyl ether N D 2 ug/l 102 67-130 <br /> Ethyl t-butyl ether N D 2 ug/1 100 74-120 <br /> t-Amyl methyl ether N D 2 ug/l 96 79-113 <br /> t-Butyl alcohol N R 100 ug/l 102 57-141 <br /> Benzene N D 5 ug/1 92 65-117 <br /> Toluene N D 5 ug/l 97 65-115 <br /> Ethylbenzene N D 5 ug/1 99 82-119 <br /> Xylene (Total) N D 5 ug/l 97 83-113 <br /> Batch number Z042971AA Sample number(B) 4376271,4376273-4376275 <br /> Ethanol N D 500 ug/l 71 46-145 <br /> Methyl Tertiary Sutyl Ether N D 2 ug/1 100 77-127 <br /> dl-Isopropyl ether N ❑ 2 ug/1 104 67-130 <br /> Ethyl t-butyl ether N D 2 ug/l 103 74-120 <br /> t-Amyl methyl ether N D 2 ug/l 98 79-113 <br /> t-Butyl alcohol N D 100 ug/l 96 57-141 <br /> Benzene N D 5 ug/1 92 65-117 <br /> Toluene N D 5 ug/l 99 85-115 <br /> Ethylbenzene N D 5 ug/l 102 82-119 <br /> Xylene (Total) N D 5 ug/l 99 83-113 <br /> Sample Matrix Quality Control <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 />