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a� )— .V.% <br /> ANr <br /> Lancaster _ r <br /> Laboratories <br /> Page 4 of 9 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 839664 <br /> Reported 03/04/03 at 06 05 PM <br /> Laboratory Compliance Quality Control <br /> Blank _ Blank Report LCS r LCSD _� LCS/LCSD r <br /> Analysis Name Result MDL- Units %REC %REC Limits RPD RPD Max <br /> 1,2,3-Trichloropropane N D 1 ug/1 106 76-124 <br /> n-Propylbenzene N D 1 ug/1 105 78-119 <br /> 2-Chlorotoluene N D 1 u9/1 107 78-115 <br /> -1,3,5-Trlmethylbenzene- - - N D 1 - ug/1 107 -— 78-122 _ <br /> 4-Chlorotoluene N D I ug/1 107 80-118 <br /> tert-Butylbenzene N D 1 ug/l 105 74-121 <br /> 1,2,4-Trimethylbenzene N D 1 ug/1 108 79-123 <br /> sec-Butylbenzene N D 1 ug/l 106 72-120 <br /> p-Isopropyltoluene N D 1 ug/1 108 72-126 <br /> 1,3-Dichlorobenzene N D 1 ug/1 110 82-119 <br /> 1,4-Dichlorobenzene N D 1 , ug/l 106 -84-116 _ <br /> n-Butylbenzene N D 1 ug/1 103 66-123 <br /> 1 2-Dichlorobenzene N D 1 ug/l 108 84-117 <br /> 1,2-Dibromo-3-chloropropane N D - 2 ug/l 96 59-120 <br /> 1,2,4-Trichlorobenzene N D 1 ug/l 108 67-121 <br /> Hexachlorobutadiene N D 2 ug/l 99 55-120 <br /> Naphthalene - N D 1 -- - ug/1 105 64-121 _ <br /> 1,2,3-Trichlorobenzene N D 1 ug/1 107 69-121 01 <br /> Acetone N D 6 ug/l 126 33-179 <br /> Carbon Disulfide N D 1 ug/I ill 83-133 <br /> 2-Butanone N D 3 ug/1 131 53-149 <br /> tran8-1,3-Dichloropropene N D 1 ug/l 103 79-114 <br /> cis-1,3-Dichloropropene N D 1 ug/l 103 78-114 <br /> 4-Methyl-2_pentanone_ —_ N D ___3 --- -ug/l-___104_ - 63-130 _ - <br /> 2-Hexanone N D 3 ug/l 117 57-135 <br /> 2-Chloroethyl Vinyl Ether N D 2 ug/1 105 68-121 <br /> Fre6n-113 <br /> Batch number P030382AA - Sample number(s) 3986818,3986820-3986822 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 103 77-127 <br /> Benzene N D 5 ug/l 101 85-117 <br /> Toluene N D 5 ug/l 106 85-115 <br /> Ethylbenzene N D 5 ug/l 106 82-119 <br /> Xylene (Total) N D 5 ug/1 104 84-120 <br /> Batch number P030392AA Sample number(s) 3986822 <br /> Xylene (Total) N D 5 u9/1 100 84-120 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD EKG DUP DUP Dup <br /> RPD <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 was more than four times the spike added 0 <br /> Lancaster Laboratories Inc <br /> M E M B E Ft 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605 2425 <br /> 717-656 2300 Fax 717-656-2681 »tr Ro lnr?rn7 <br />