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Lancaster Laboratories <br />Where quality is a science. <br />Page 1 of 7 <br />Quality Control Summary <br />Client Name: ChevronTexaco Group Number: 829283 <br />Reported: 11/14/02 at 07:58 PM <br />.., Laboratory Compliance Quality Control <br />Analvsis Name <br />xesurr <br />FIV4----- <br />J <br />Batch number: 0230BA16A <br />Sample <br />number(s): <br />50- <br />3933143-3933152 <br />ug/1 <br />103 107 <br />74-116 <br />TPH-GPO - Waters <br />N.D- <br />Batch number: 02308A16B <br />Sample <br />number(s): <br />3933153-3933160 <br />TPH-GPO - Waters <br />N.D- <br />50. <br />ug/l <br />103 107 <br />74-116 <br />Batch.number: 02309A53A <br />Sample <br />number(s): <br />3933161-3933170 <br />TPS-GRO .- Waters <br />N.D. <br />50. <br />ug/1 <br />104, 108 <br />74-116 <br />Batch number: 023100040A <br />Sample <br />number(s): <br />3933144 <br />104. <br />64-130 <br />Methanol (by Direct Injection) <br />N.D. <br />200. <br />ug/1 <br />Batch number: 023100041A <br />Sample <br />number(s). <br />3933145-3933164 <br />Methanol (by Direct Injection) <br />N.D. <br />200- <br />ug/l <br />88 <br />64-130 <br />Batch number: 023100042A <br />Sample <br />number s►: <br />3933165-3933170 <br />Methanol (by Direct Injection) <br />N.D. <br />200. <br />ug/l <br />100 <br />64-130 <br />Batch number: N023051AB <br />Sample <br />number(s): <br />3933166-3933170 <br />Ethanol <br />N.D. <br />5o. <br />ug/l <br />91 <br />43-159 <br />Methyl t -butyl ether <br />N.D. <br />.5 <br />ug/l <br />100 <br />.77-127 ' <br />di -Isopropyl ether <br />N.D. <br />.5 <br />ug/l <br />91 <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />.5 <br />u9/1 <br />91 <br />74-120 <br />s3 <br />t -Amyl methyl ether <br />N -D- <br />.5 <br />ug/l <br />94 <br />71-114 <br />t -Butyl alcohol <br />N -D. <br />5. <br />ug/l <br />104 <br />59-139 <br />Benzene <br />N.D. <br />.5 <br />ug/1 <br />106 <br />85-117 <br />1,2-Dichloroethane <br />N.D. <br />.5 <br />ug/1 <br />103 <br />77-132 <br />Toluene + <br />N.D. <br />.5 <br />ug/1 <br />109 <br />85-115 <br />1,2-Dibromoethane <br />N.D- <br />.5 <br />ug/l <br />103 <br />81-114 <br />Ethylbenzene . <br />N.D. <br />-5 <br />ug/1 <br />109 <br />82-119 <br />Xylene (Total) <br />N.D- <br />-5 <br />u9/1 <br />110 <br />84-120 , <br />Batch number: N023101AA, <br />Sample <br />number(s): <br />3933154-3933159 <br />Ethanol <br />N.D. <br />50. <br />ug/l <br />84 <br />43-159 <br />Methyl t -butyl ether <br />N.D. <br />.5 <br />u9/1 <br />96 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />.5 <br />ug/l <br />91 <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />5 <br />ug/1 <br />88 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />.5 <br />ug/l <br />91 <br />71-114 <br />t -Butyl alcohol <br />N.D. <br />5. <br />ug/1 <br />88 <br />59-139 <br />Benzene <br />N.D. <br />.5 <br />ug/1 <br />108 <br />85-117 <br />1,2-Dichloroethane <br />N.D. <br />.5 <br />ug/l <br />104 <br />77-132 <br />Toluene <br />N.D. <br />.5 <br />ug/1 <br />110 <br />85-115 <br />11,2-Dibromoethane <br />N.D. <br />.5 <br />uv/1 <br />102 <br />81-1.1.4 <br />Ethylbenzene <br />N.D. <br />.5 <br />u9/1 <br />109 c <br />82-119 <br />Xylene (Total) <br />N.D. <br />.5 <br />ug/l <br />110 <br />84-120 <br />Batch number: N0231OIAB <br />Sample <br />number(s): <br />3933160-.3933162 <br />Ethanol <br />N.D- <br />50. <br />u9/1 <br />84 <br />43-159 <br />Methyl t -butyl ether <br />N.D. <br />.5 <br />ug/1 <br />96 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />.5 <br />- ug/l <br />91. <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />.5 <br />ug/1 <br />88 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />.5 <br />ug/l <br />91 <br />71-114 <br />t -Butyl alcohol <br />N.D. <br />5. <br />ug/1 <br />88 <br />59-139 <br />Benzene <br />N.D- <br />.5 <br />u9/1 <br />108 <br />85-117 <br />1,2-Dichloroethane <br />N.D- <br />.5 <br />ug/1 <br />104 <br />77-132 <br />*- Outside of specification <br />(1) The result for one or both determinations was less than <br />five times the <br />LOQ. <br />(2) The background result was more than four <br />times the spike <br />added. <br />Lancaster <br />Laboratories, <br />Inc. <br />M E M B E R 2425 New <br />Holland Pike <br />PO Box 12425 <br />Lancaster, <br />PA 17605-2425 <br />717-656-2300 Fax: 717-656-2681 <br />ED RPD Max <br />4 30 <br />4 30 <br />4 30 <br />9- <br />5' <br />2216 Rev. 901109 <br />