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Lancaster Laboratories <br />Where quality is a science. <br />Quality Control Summary <br />Client Name: ChevronTexaco <br />200. <br />Group <br />Number: <br />8281.35 <br />Reported: 11/01/02 at 11:08 <br />Am <br />3926510-3926514 <br />4 <br />30 <br />N.D. <br />Laboratory <br />Compliance Quality <br />Control <br />Analysis Name <br />Blank Blank <br />Besult MDL <br />Report LCS <br />Units JsREC <br />LCSD <br />RHC <br />LCS/LCSD <br />Limits <br />Batch number: 02299A16A <br />Sample number(s): <br />3926510-3926514 <br />ug/l <br />109 <br />TPH-GRO - Waters <br />N.D. 50, <br />ug/l 113 <br />116 <br />74-116 <br />Batch number: 023030020A <br />Methanol (by Direct Injection) <br />Batch number: N023012AA <br />Ethanol <br />Methyl t -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-I)ibromoethane <br />Ethylbenzene <br />Xylene (Total) <br />Sample number(s): 3926510-3926513 <br />N.D. <br />200. <br />ug/l <br />108 <br />64-130 <br />Sample <br />number(s): <br />3926510-3926514 <br />4 <br />30 <br />N.D. <br />50. <br />ug/l <br />60 <br />43-159 <br />N.D. <br />.5 <br />ug/l <br />94 <br />77-127 <br />N.D_ <br />-5 <br />ug/l <br />109 <br />74-125 <br />N.D. <br />.5 <br />ug/l <br />99 <br />74-120 <br />N.D. <br />.5 <br />ug/l <br />93 <br />71-114 <br />N.D. <br />5_ <br />ug/1 <br />66 <br />59-139 <br />N.D. <br />.5 <br />ug/l <br />107 <br />85-117 <br />N.D_ <br />.5 <br />ug/l <br />105 <br />77-132 <br />N.D. <br />.5 <br />ug/l <br />115 <br />85-115 <br />N.D. <br />.5 <br />ug/l <br />87 <br />81-114 <br />N.D. <br />.5 <br />ug/l <br />118 <br />82-119 <br />N.D. <br />.5 <br />ug/l <br />114 <br />84-120 <br />Sample Matrix Quality Control <br />MS MSD MS/MSD RPD BKC3 DUP <br />Analysis Name REC $REC Limits ,SPD MAX Cone Conc <br />Batch number: 023030020A Sample number(s): 3926510-3926513 <br />Methanol (by Direct Injection) Be Be 69-127 0 20 <br />Batch number: N023012AA <br />Ethanol <br />Methyl t -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 />Analysis Name: TPH-GRO - Waters <br />Batch number: 02299A16A <br />Trifluorotoluene-F <br />3926510 108 <br />Sample number(s): 3926510-3926514 <br />49 <br />57 <br />34-163 <br />15 <br />30 <br />86 <br />90 <br />69-134 <br />4 <br />30 <br />102 <br />107 <br />68-133 <br />5 <br />30 <br />92 <br />97 <br />73-123 <br />6 <br />30 <br />85 <br />92 <br />69-118 <br />7 <br />30 <br />54 <br />57 <br />51-148 <br />7 <br />30 <br />101 <br />107 <br />78-134 <br />6 <br />30 <br />97 <br />102 <br />73-136 <br />5 <br />30 <br />108 <br />114 <br />83-127 <br />6 <br />30 <br />79 <br />62 <br />78-120 <br />4 <br />30 <br />109 <br />116 <br />82-134 <br />6 <br />30 <br />106 <br />113 <br />82-130 <br />7 <br />30 <br />Surrogate Quality Control <br />*- Outside of specification <br />_jJJ„) 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 E M 13 E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, PA 17605-2425 <br />717-656-2300 Fax: 717-556-2681 <br />Page 1 of 2 <br />RPA RPD Max <br />3 <br />DUP <br />RPD <br />30 <br />Dup <br />RPD <br />Max <br />2216 Rev. 9/11/00 <br />