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x A <br /> " - Lancaster <br /> Laboratories <br /> Page b of 9 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 839664 <br /> Reported 03/04/03 at 06 05 PM <br /> Sample Matrix Quality Control <br /> M3 MSD MS/MSD RPD BRt3 DUP DUP Dup <br /> s - - z _ - 7— - RPD- <br /> Analysis Name %REC.' %REC Limits RPD MAX Conc Conc RPD Max <br /> 1,1,2-Trichloroethane 107 107 77-125 1 30 <br /> Tetrachloroethene 122 123 75-143 0 30 <br /> -- -1-3-Dichloropropane ---I10 110 82-121- - 0- -30 <br /> Dibromochloromethane 98 98 73-119 0 30 <br /> 1,2-Dibromoethane 107 108 78-120 1 30 <br /> Chlorobenzene 114 113 83-120 0 30 <br /> 1,1,1 2-Tetrachloroethane 106 107 83-119 0 30 <br /> Ethylbenzene 115 115 82-134 0 30 <br /> m+p-Xylene 118 118 62-130 1 30 <br /> o-Xylene 116 115 82-130 0 30 <br /> Styrene 114 115 67-137 1 30 <br /> Bromoform 91 90 64-119 2 30 <br /> isopropylbenzene 115 114 81-130 0 30 <br /> 1,1,2 2-Tetrachloroethane 105 105 69-121 0 30 <br /> Bromobenzene 116 113 83-121 3 30 <br /> 1,2,3-Trichloropropane 107 109 73-125 1 30 - <br /> n-Propylbenzene 114 114 78-131 0 30 ` <br /> 2-Chlorotoluene 113 112 78-121 1 30 <br /> 1,3,5-Trimethylbenzene 113 112 74-130 1 30 <br /> 4-Chlorotoluene 112 111 81-123 0 30 " <br /> tert-Butylbenzene 113 113 76-128 1 30 <br /> 1,2,4-Trimethylbenzene 113 114 75-132 1 30 <br /> sec-Butylbenzene _— _113 =113 _72-134 _0 ----30 <br /> p-Isopropyltoluene 115 113 _ 72-135 2 30 <br /> 1,3-Dichlorobenzene 116 114 82-128 2 30 <br /> --- <br /> n-Butylbenzene ill 111 60-140 0 30 <br /> 1,2-Dichlorobenzene - 111 -- 111 " 82-117 0 -30 <br /> 1,2-Dibromo-3-chloropropane 98 97 54-130 1 30 <br /> 1,2,4-Trichlorobenzene 111 110 66-121 1 30 <br /> Hexachlorobutadiene 113 110 52-132 3 30 <br /> Naphthalene 112 113 59-124 0 30 <br /> 1,2,3-Trichlorobenzene 113 113 66-321 0 30 <br /> Acetone 73 73 26-148 1 30 <br /> Carbon Disulfide 128 128 78-150 0 30 <br /> 2-Butanone 91 92 42-140 1 30 <br /> trans-1,3-Dichloropropene 105 105 75-117 1 30 <br /> cis-1 3-Dzchloropropene 108 _ 107 76-117 1 30 <br /> 4-Methyl-2-pentanone 105 105 59-132 0 30 <br /> 2-Hexanone 101 101 53-134 0 30 <br /> 2-Chloroethyl Vinyl Ether 16 0* 1-172 200* 30 <br /> Freon 113 123 125 81-155 2 30 <br /> Batch number P030382AA Sample number(s) 3986818 3986820-3986822 <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 <br /> Lancaster Laboratories Inc <br /> M E M B E R 2425 New Holland Pike <br /> PD Sox 12425 <br /> Lancaster PA 17605 2425 <br /> 717 656 2300 Fax 717-656 2681 774G oe 4nr7rm <br />