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r <br />'Lancaster <br />Laboratories <br />Quality Control Summary <br />Client Name: ChevronTexaco Group Number: 872526 <br />Reported: 11/07/03 at 10:50 AM <br />Laboratory Compliance Quality Control <br />Analysis Name <br />Batch number: 03302A55A <br />TPH-GRO - Waters <br />Batch number: 033070007A <br />Methanol ;by Direct Injection) <br />Batch number: P033021AA <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 />Toluene <br />1,2-Dibromoethane <br />Ethylbenzene <br />Xylene (Total) <br />$lank <br />Blank <br />Result <br />MDL <br />Sample <br />number(s) <br />N.D. <br />50. <br />Report LCS <br />Units %REC <br />4152395-4152399 <br />Ug/1 122 <br />Sample number($): 4152395-4152399 <br />N.D. 200. ug/1 96 <br />Sample number(s): 4152395 <br />N.D. <br />50. <br />ug/l <br />90 <br />N.D. <br />0.5 <br />ug/1 <br />95 <br />N.D. <br />0.5 <br />ug/l <br />95 <br />N.D. <br />0.5 <br />ug/l <br />91 <br />N.D. <br />0.5 <br />ug/l <br />97 <br />N.D. <br />5. <br />ug/1 <br />100 <br />N.D. <br />0.5 <br />ug/l <br />98 <br />N.D. <br />0.5 <br />ug/l <br />95 <br />N.D. <br />0.5 <br />ug/l <br />100 <br />N.D. <br />0.5 <br />ug/1 <br />98 <br />N.D. <br />0.5 <br />ug/l <br />101 <br />N.D. <br />0.5 <br />ug/1 <br />102 <br />Batch number: P033023AA Sample number(s): <br />4152396-4152398 <br />Ethanol <br />N.D. <br />50. <br />ug/l <br />92 <br />Methyl Tertiary Butyl <br />Ether N.D. <br />0.5 <br />ug/l <br />96 <br />di -isopropyl ether <br />N.D. <br />0.5 <br />ug/l <br />94 <br />Ethyl t -butyl ether <br />N.D. <br />0.5 <br />ug/l <br />91 <br />t -Amyl methyl ether <br />N.D. <br />0.5 <br />ug/1 <br />96 <br />t -Butyl alcohol <br />N.D. <br />5. <br />ug/1 <br />102 <br />Benzene <br />N.D. <br />0.5 <br />ug/l <br />95 <br />1,2-Dichloroethane <br />N.D. <br />0.5 <br />ug/1 <br />92 <br />Toluene <br />N.D_ <br />0.5 <br />ug/l <br />97 <br />1,2-Dibromoethane <br />N.D. <br />0.5 <br />ug/1 <br />95 <br />Ethylbenzene <br />N.D. <br />0.5 <br />ug/l <br />97 <br />Xylene (Total) <br />N.D. <br />0.5 <br />ug/1 <br />98 <br />Batch number: P033031AA Sample number(s): <br />4152399 <br />Ethanol <br />N.D. <br />50. <br />ug/1 <br />89 <br />Methyl Tertiary Butyl Ether N.D. <br />0.5 <br />ug/1 <br />95 <br />di -Isopropyl ether <br />N.D. <br />0.5 <br />ug/1 <br />93 <br />Ethyl t -butyl ether <br />N.D. <br />0.5 <br />ug/l <br />90 <br />t -Amyl methyl ether <br />N.D. <br />0.5 <br />ug/l <br />95 <br />t -Butyl alcohol <br />N.D. <br />5 <br />ug/1 <br />101 <br />Benzene <br />N.D. <br />0.5 <br />ug/1 <br />95 <br />1,2-Dichloroethane <br />N.D. <br />0.5 <br />ug/1 <br />94 <br />Toluene <br />N.D. <br />0.5 <br />ug/l <br />93 <br />1,2-Dibromoethane <br />N.D. <br />0.5 <br />ug/l <br />92 <br />Ethylbenzene <br />N.D. <br />0.5 <br />ug/1 <br />93 <br />Xylene (Total) <br />N.D. <br />0.5 <br />ug/1 <br />95 <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 <br />was more than four times <br />the spike added. <br />Lancaster Laboratories, Inc. <br />M E M B F- R <br />2425 New Holtand Pike <br />PO Box 12425 <br />Lancaster, PA 17605-2425 <br />717-656-23nO Fav 717-656-2681 <br />LCSD LCs/LCSD <br />%REC Limits <br />101 70-130 <br />78-114 <br />46-145 <br />77-127 <br />74-125 <br />74-120 <br />79-113 <br />53-147 <br />85-117 <br />77-132 <br />85-115 <br />81-114 <br />82-119 <br />84-120 <br />46-145 <br />77-127 <br />74-125 <br />74-120 <br />79-113 <br />53-147 <br />85-117 <br />77-132 <br />85-115 <br />81-114 <br />82-119 <br />84-120 <br />46-145 <br />77-127 <br />74-125 <br />74-120 <br />79-113 <br />53-147 <br />85-117 <br />77-132 <br />85-115 <br />81-114 <br />82-119 <br />84-120 <br />Page 1 of <br />RPD, RPD Max <br />19 30 <br />�-„r, a- �i,nm-4 <br />