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D] <br />Lancaster <br />Laboratories <br />Quality Control Summary <br />Page 3 of 5 <br />Client Name Che'vronTexaco <br />Group Number 837261 <br />Reported 01/23/03 at <br />02 23 PM <br />Sample <br />Matrix <br />Qual3_ty <br />Control <br />MS <br />MSD <br />MS/MSD <br />RPD BXG DUP DUP Dup <br />RPD <br />Analysis Name <br />%REC <br />%REC <br />Limits <br />RPD <br />MAX Conc Conc RPD Max <br />Xylene (Total) <br />113 <br />113 <br />82-130 <br />0 <br />30 <br />Batch number N030102AC <br />Sample <br />number(s) <br />3975449 <br />Methyl t -butyl ether <br />103 <br />104 <br />69-134 <br />1 <br />30 <br />Benzene <br />114 <br />115 <br />78-134 <br />1 <br />30 <br />Toluene <br />114 <br />112 <br />83-127 <br />2 <br />30 <br />Ethylbenzene <br />112 <br />113 <br />82-134 <br />1 <br />30 <br />Xylene (Total) <br />113 <br />113 <br />82-130 <br />0 <br />30 <br />Batch number N030121AA <br />Sample <br />number(s) <br />3975447 <br />Ethanol <br />116 <br />115 <br />34-163 <br />0 <br />30 <br />Methyl t -butyl ether <br />101 <br />101 <br />69-134 <br />0 <br />30 <br />di -Isopropyl ether <br />106 <br />105 <br />68-133 <br />0 <br />30 <br />Ethyl t -butyl ether <br />96 <br />99 <br />73-123 <br />2 <br />30 <br />t -Amyl methyl ether <br />96 <br />97 <br />69-118 <br />1 <br />30 <br />t -Butyl alcohol <br />108 <br />10B <br />51-148 <br />1 <br />30 <br />enzene <br />118 <br />116 <br />78-134 <br />2 <br />30 <br />Dichloroethane <br />118 <br />115 <br />73-136 <br />3 <br />30 <br />uene <br />114 <br />112 <br />83-127 <br />1 <br />30 <br />1,2-Di.bromoethane <br />105 <br />105 <br />78-120 <br />0 <br />30 <br />Ethylbenzene <br />113 <br />112 <br />82-134 <br />1 <br />30 <br />Xylene (Total) <br />115 <br />113 <br />82-130 <br />2 <br />30 <br />Surrogate Quality Control <br />Analysis Name TPH-GRO - Waters <br />Batch number 0300BA07E <br />Trifluorotoluene-F <br />3975445 91 <br />3975446 89 <br />3975447 89 <br />3975448 89 <br />3975449 88 <br />Blank 89 <br />L,CS 108 <br />LCSD 107 <br />MS 288* <br />Limits 57-146 <br />Analysis Name Methanol and Ethanol <br />Batch number 030130006A <br />Acetone <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 />Lancaster laboratories, Inc <br />M M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, PA 001Fax -2425 <br />717-6 <br />717 656 2300 fax 717-fi56 2681 ��yr oe �nroim <br />