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C7 <br />Lancaster <br />Laboratories <br />Quality Control Summary <br />Client Name ChevronTexaco <br />92 <br />69-127 <br />Group <br />Number <br />839081 <br />Reported 01/31/03 at 03 <br />56 PM <br />74-132 <br />Sample <br />number(s) 3963540-3983542 <br />110 <br />Laboratory <br />Compliance Quality <br />Control <br />Sample <br />Blank <br />Blank <br />Report <br />LCS <br />LCSD <br />LCS/LCSD <br />Analysis Name <br />Result <br />MDL <br />Unite <br />REC <br />%REC <br />Limits <br />Batch number 03025A07C <br />Sample <br />number(s) <br />3983543 <br />90 <br />91 <br />69-118 <br />TPH-GRO - Waters <br />N D <br />50 <br />ug/l <br />96 <br />95 <br />74-116 <br />Batch number 030280003A <br />Sample <br />number(s) <br />3983539-3983542 <br />73-136 <br />0 30 <br />Methanol (by Direct Injection) <br />N D <br />200 <br />u9/1 <br />92 <br />64-130 <br />Batch number 0302BA07A <br />Sample <br />number(s) <br />3983539 <br />TPH-GRO - Waters <br />N D <br />50 <br />ug/l <br />103 <br />104 <br />74-116 <br />Batch number 0302BA07B <br />Sample <br />number(s) <br />3983540-3983542 <br />TPH-GRO - Waters <br />N D <br />50 <br />ug/l <br />103 <br />104 <br />74-116 <br />Batch number N030272AA <br />Sample <br />number(s) <br />3983539-3983543 <br />Ethanol <br />N D <br />50 <br />ug/l <br />75 <br />43-159 <br />Methyl Tertiary 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 />111 <br />74-125 <br />Ethyl t -butyl ether <br />N D <br />5 <br />u9/1 <br />99 <br />74-120 <br />t -Amyl methyl ether <br />N D <br />5 <br />u9/1 <br />95 <br />71-114 <br />t -Butyl alcohol <br />N D <br />5 <br />ug/l <br />68 <br />59-139 <br />Benzene <br />N D <br />5 <br />ug/l <br />110 <br />85-117 <br />1,2-1)ichloroethane <br />N D <br />5 <br />u9/1 <br />105 <br />77-132 <br />e <br />N D <br />5 <br />ug/1 <br />108 <br />85-115 <br />Wtl,,ne <br />2-Dlbromoethane <br />N D <br />5 <br />ug/1 <br />89 <br />81--114 <br />hylbenzene <br />N D <br />5 <br />ug/l <br />107 <br />82-119 <br />Xylene (Total) <br />N D <br />5 <br />ug/l <br />107 <br />84-120 <br />alvsis Name <br />Batch number 03025A07C <br />TPH-GRO - Waters <br />Batch number 030280003A <br />Methanol (by Direct Injection) <br />Batch number 0302BA07A <br />TPH-GRO - Waters <br />Batch number 0302BA07B <br />TPH-GRO - Waters <br />Batch number N030272AA <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />di -Isopropyl ether <br />Ethyl t -butyl ether <br />t -Amyl methyl ether <br />t -Butyl alcohol <br />Benzene <br />1,2-Dichloroethane <br />Sample Matrix Quality Control <br />MS MSD MS/MSD RPD BKG <br />$REC RSC Limits RPD MAX Conc <br />Sample numbers) 3983543 <br />114 74-132 <br />Sample number(a) 3983539-3983542 <br />92 <br />92 <br />69-127 <br />0 20 <br />Sample <br />number(s) 3983539 <br />110 <br />74-132 <br />Sample <br />number(s) 3963540-3983542 <br />110 <br />74-132 <br />Sample <br />number(s) 3983539-3983543 <br />64 <br />71 <br />34-163 <br />9 30 <br />96 <br />97 <br />69-134 <br />0 30 <br />113 <br />114 <br />68-133 <br />1 30 <br />93 <br />94 <br />73-123 <br />2 30 <br />90 <br />91 <br />69-118 <br />1 30 <br />58 <br />60 <br />51-148 <br />4 30 <br />115 <br />115 <br />78-134 <br />0 30 <br />104 <br />104 <br />73-136 <br />0 30 <br />*- Outside of specification <br />(1) The result for one or both determinations was less than five times the LOQ <br />0 The background result was more than four times the spike added <br />Page 1 of 3 <br />RPD RPD Max <br />1 30 <br />1 30 <br />1 30 <br />DIIP DIIP Dup <br />RPD <br />Conc RPD Max <br />Lancaster laboratories, Inc. <br />INI 6 M 8 2425 New Holland Pike <br />®Po Box 92425 <br />Lancaster, PA 17605-2425 <br />717-656 2300 Fax 717-656-2681 2216 Rev 10!2102 <br />