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Lancastern ! sis Report <br /> Laboratories A Y • <br /> 2425 New Holland Pike PQ Box 12425 Lancaster PA 176052425 717 656-2300 Fax 717 656 2681 www lancasterlabs corn <br /> Page 5 of 8 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 905571 <br /> Reported —08/10/04 at-06 13 2M__ <br /> Sample Matrix Quality Control <br /> MS _ MSD'- MS/MSD - - _ RPD BKG- DUP - - - DVP- _ -Dup-RPD <br /> Analysis Name %RHC %RSC Limits RPD MAX Cone Conc RPD Max <br /> 11-Dichloroethane 105 98 85-135 6 30 <br /> 2,2-Dichloropropane 108 105 78-134 3 30 <br /> cis-1,2-Dichloroethene 111 106 83-126 4 30 <br /> -- Chloroform -- - - - - 107== 102- - =82-131- 5T 30 -_- - ----- -- - — --_­_ _ <br /> Bromochl0romethane 95 91 60-130 4 30 <br /> 1,1,1-Trichloroethane 110 104 81-142 6 30 <br /> Carbon Tetrachloride 112 107 73-144 5 30 <br /> 1,1-Dichloropropene 11.1 106 86-134 5 30 <br /> Benzene 111 105 a3-128 5 30 <br /> 1 2-Dichloroethane 100 96 73-136 4 30 <br /> Trichloroethene 109 105 75-135 4 30 <br /> 1,2-Dichloropropane 106 101 81-121 5 30 W <br /> Dibromomethane 105 100 83-120 5 30 <br /> Bromodichloromethane 103 99 80-129 5 30 <br /> Toluene 107 101 83-127 6 30 <br /> 1,1,2-Trichloroethane 102 98 77-125 5 30 <br /> Tetrachloroethene 109 104 78-133 5 30 <br /> 1,3-Dichloropropane 101 95 82-121 6 30 <br /> Dibromochloromethane 100 94 73-119 6 30 <br /> 1,2-Dibromoethane - - 103 98= 78-120 - 5 30 _ <br /> Chlorobenzene 104 97 83-120 7 30 • <br /> 1,1,1,2-Tetrachloroethane 103 98 83-119 5 30 <br /> Ethylbenzene 107 101 82-129 6 30 <br /> m+p-Xylene 106 100 82-130 7 30 <br /> o-Xylene 105 100 82-130 5 30 <br /> Styrene 105 100 76-126 5 30 <br /> Bromoform 103 99 64-119 4 30 <br /> Isopropylbenzene 107 102 81-130 5 30 <br /> 1,1,2,2-Tetrachloroethane_ r105100---69-121 _5=`30T=__ <br /> Bromobenxene 108 103 63-1215 30 <br /> 1,2,3-Trichloropropane 103 ' 97 73-125 5 30 <br /> -- n-Propylbenzene �- T111—- 105--X78-131 _ 5___30_; - - <br /> 2-Chlorotoluene 109 103 78-121 5 30 <br /> 1,3 5-Trimethylbenzene 107 102 77-124 5 30 <br /> 4-Chlorotoluene= - -107- -103 - -81-123 4 - 30 <br /> tert-Butylbenzene 111 105 76-128 6 30 <br /> 1,2 4-Trimethylbenzene 106 102 75-132 4 30 <br /> sec-Butylbenzene 110 103 73-129 6 30 <br /> p-Isopropyltoluene _I05_98_______72_-I28 6 30 <br /> 1,3-Dichlorobenzene 106 101 79-123 5 30 <br /> 1,4-Dichlorobenzene 105 100 81-122 4 30 <br /> n-Butylbenzene 106 100 66-131 6 30 <br /> 1,2-Dichlorobenzene 105 99 82-117 5 30 <br /> 1,2-Dibromo-3-chloropropane 93 90 53-125 4 30 <br /> 1 2,4-Trlchlorobenzene 98 98 60-121 0 30 <br /> Hexachlorobutadiene 85 83 52-132 3 30 <br /> Naphthalene 73 .71 50-124 2 30 - - <br /> 1,2 3-Trichlorobenzene 95 92 58-122 2 30 <br /> Acetone 62 61 12-153 1 30 <br /> Carbon Disulfide 122 117 77-155 4 30 <br /> 2-Butanone 86 61 42-140 6 30 <br /> trans-1 3-Dichloropropene 97 93 75-117 5 30 <br /> cis-1,3-Dichloropropene 100 96 76-117 4 30 <br /> 4-Methyl-2-peritanone 100 94 54-134 6 30 <br /> 2-Hexanone 94 90 44-140 4 30 <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 />