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I� <br />1 Lancaster <br />Laboratories <br />Analysis Report <br />2425 New Holland Pike, PO Box 12425, Lancaster, PA 17605-2425 •717-656-2300 Fax: 7t7-656-2681 • www.tancasterlabs.com <br />Quality Control Summary <br />Client Name: ChevronTexaco Group Number: 883197 <br />Reported: 02/12/04 at 08:28 AM <br />Laboratory Compliance Quality Control <br />Blank Blank Report LCS LCSD LCS/LCSD <br />Analvais Name <br />Batch number: 04034AD78 <br />TPH-GRO - Waters <br />Batch number: 04034A07C <br />TPH-GRO - Waters <br />Batch number: 040350020A <br />Methanol (by Direct Injection) <br />Batch number: 040350021A <br />Methanol (by Direct Injection) <br />Batch number: 0403SAGBA <br />TPH-GRO - Waters <br />Hatch number: 04035AOBB <br />TPH-.RO - Waters <br />MS MSD MS/MSD RPD BKG DUP <br />REC %R13C Limits RPD MAX Conc Cone <br />Sample number(s): 4207699-4207708 <br />109 63-154 <br />Sample number(s): 4207709-4207714 <br />109 63-154 <br />Sample number(s): 4207700-4207719 <br />115 112 73-117 3 20 <br />Sample number(s): 4207720-4207729 <br />112 112 73-117 0 20 <br />Sample number(s): 4207715 <br />107 63-154 <br />Sample number(s): 4207716-4207725 <br />107 63-154 <br />*- Outside of specification <br />F(1) The result for one or both determinations was less than five times the LOQ. <br />(2) The background result was more than four times the spike added. <br />Page 2 of 8 <br />RPD RPD Max <br />DUP Dup <br />RPD <br />RPD Max <br />Analysis Name <br />Result <br />MDL <br />Units <br />%REC <br />%RBC Limits <br />Batch number: 1?040392AA <br />Sample <br />number(s): <br />4207724-4207729 <br />Ethanol <br />N.D. <br />50. <br />ug/l <br />7B <br />46-145 <br />Methyl Tertiary Butyl Ether <br />N.D. <br />0.5 <br />ug/l <br />87 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />0.5 <br />ug/l <br />96 <br />67-130 <br />Ethyl t -butyl ether <br />N.D. <br />0.5 <br />ug/l <br />92 <br />74-120 <br />t -Amyl methyl ether <br />N.D.. <br />0.5 <br />ug/l <br />87 <br />79-113 <br />t -Butyl alcohol <br />N.D. <br />S. <br />ug/l <br />93 <br />57-141 <br />Benzene <br />N.D. <br />0.5 <br />ug/l <br />85 <br />85-117 <br />1,2-Dichloroethane <br />N.D. <br />0.5 <br />ug/l <br />93 <br />77-132 <br />Toluene <br />N -D. <br />0.5 <br />ug/l <br />85 <br />65-115 <br />1,2-Dibromoethane <br />N.D, <br />0.5 <br />ug/l <br />85 <br />81-114 <br />Ethylbenzene <br />N.D. <br />0.5 <br />ug/i <br />85 <br />82-119 <br />Xylene (Total) <br />N.D. <br />0.5 <br />ug/l <br />86 <br />84-120 <br />Batch number: P040401AA <br />Sample <br />number(s): <br />4207720-4207721 <br />Ethanol <br />N.D. <br />50, <br />ug/i <br />108 <br />46-145 <br />Methyl Tertiary Butyl Ether <br />N.D. <br />0.5 <br />ug/i <br />91 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />0.5 <br />ug/i <br />103 <br />67-130 <br />Ethyl t -butyl ether <br />N.D. <br />0.5 <br />ug/i <br />97 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />0.5 <br />ug/l <br />93 <br />79-113 <br />t -Butyl alcohol <br />N.D. <br />5. <br />ug/l <br />105 <br />57-141 <br />Benzene <br />N.D. <br />0.5 <br />ug/l <br />92 <br />65-117 <br />1,2-Dichloroethane <br />N.D. <br />0.5 <br />ug/1 <br />100 <br />77-132 <br />Toluene <br />N.D. <br />0.5 <br />ug/1 <br />90 <br />85-115 <br />1,2-Dibromoethane <br />N.D. <br />0.5 <br />ug/1 <br />88 <br />81-114 <br />Ethylbenzene <br />N.D. <br />0.5 <br />ug/1 <br />90 <br />82-119 <br />Xylene (Total) <br />N.D. <br />0.5 <br />ug/l <br />90 <br />84-120 <br />Batch number: P040402AA <br />Sample <br />number(s). <br />4207727 <br />664 <br />Methyl Tertiary Butyl Ether <br />N.D. <br />0.5 <br />ug/l <br />89 <br />77-127 <br />Sample <br />Matrix <br />Quality <br />Control <br />Analvais Name <br />Batch number: 04034AD78 <br />TPH-GRO - Waters <br />Batch number: 04034A07C <br />TPH-GRO - Waters <br />Batch number: 040350020A <br />Methanol (by Direct Injection) <br />Batch number: 040350021A <br />Methanol (by Direct Injection) <br />Batch number: 0403SAGBA <br />TPH-GRO - Waters <br />Hatch number: 04035AOBB <br />TPH-.RO - Waters <br />MS MSD MS/MSD RPD BKG DUP <br />REC %R13C Limits RPD MAX Conc Cone <br />Sample number(s): 4207699-4207708 <br />109 63-154 <br />Sample number(s): 4207709-4207714 <br />109 63-154 <br />Sample number(s): 4207700-4207719 <br />115 112 73-117 3 20 <br />Sample number(s): 4207720-4207729 <br />112 112 73-117 0 20 <br />Sample number(s): 4207715 <br />107 63-154 <br />Sample number(s): 4207716-4207725 <br />107 63-154 <br />*- Outside of specification <br />F(1) The result for one or both determinations was less than five times the LOQ. <br />(2) The background result was more than four times the spike added. <br />Page 2 of 8 <br />RPD RPD Max <br />DUP Dup <br />RPD <br />RPD Max <br />