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Lancaster ; Report <br /> W.,. Laboratories i4 n a l ys s p <br /> 2425 New Holland Pike PO Bax 12425 Lancaster PA 17605.2425-717-656-2300 Fax 717-656-2681-Www lancasterlabs com <br /> Page 4 of 7 <br /> Quality Control Summary <br /> Client Name CYlevronTexaco Group Number 941826 <br /> Reported 05/12/05 at 02 41 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analvais Name Result ML 'units %REC %RHC Limits RPD RPD Max <br /> 4-Methyl-2-pentanone N D 3 ug/1 98 57-133 <br /> 2-Hexanone N D 3 ug/l 98 47-150 <br /> 2-Chlorcethyl Vinyl Ether N D 2 ug/l 100 53-133 <br /> Freon 113 N D 2 u9/1 118 73-140 <br /> Batch number Z051252AA Sample number(S) 4516306,4516309-4516311 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 95 77-127 <br /> Benzene N D 5 ug/l 92 85-117 <br /> Toluene N D 5 ug/l 95 65-115 <br /> Ethylbenzene N D 5 ug/l 93 82-119 <br /> Xylene (Total) N D 5 ug/l 97 63-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSO RPD BRG DUP DUP Dup RPD <br /> Analysis Name %REC %RSC Limits RPD MAX Conc Cora RPA Max <br /> Batch number 051241848004 Sample number($) 4516308 <br /> Cadmium 102 102 87-117 0 20 N D N D 0 (1) 20 <br /> romium 101 101 86-118 0 20 N D N D 0 (1) 20 <br /> Wnkel <br /> d 102 102 87-118 0 20 N D N D 0 (1) 20 <br /> 101 102 91-111 0 20 N D N D 0 (1) 20 <br /> Zinc 99 99 80-120 0 20 0 0371 0 0307 19 (1) 20 <br /> Batch number 05125AIGA Sample number(s) 4516306-4516307,4516309-4516311 <br /> TPH-GRO - Waters 109 63-154 <br /> Batch number W051292AA Sample number(s) 4516307 <br /> Ethanol 123 107 26-153 13 30 <br /> Methyl Tertiary Butyl Ether 105 103 69-134 2 30 <br /> di-Isopropyl ether 103 105 75-130 1 30 <br /> Ethyl t-butyl ether 105 103 78-119 2 30 <br /> t-Amyl methyl ether 102 103 77-117 1 30 <br /> t-Butyl alcohol 99 102 51-147 3 30 <br /> Dichlorodifluoromethane 168 161 72-206 4 30 <br /> Chloromethane 120 117 72-208 2 30 <br /> Vinyl Chloride 121 116 81-150 4 30 <br /> Bromomethane 114 106 59-143 7 30 <br /> Chloroethane 115 111 63-142 3 30 <br /> Trichlorofluoromethane 134 129 77-177 4 30 <br /> 1,1-Dichloroethene 123 121 87-145 2 30 <br /> Methylene Chloride 109 108 79-133 1 30 <br /> trans-1,2-Dichloroethene 113 112 82-133 1 30 <br /> 1,1-Dichloroethane 113 112 85-135 1 30 <br /> 2,2-Dichloropropane 116 114 79-146 3 30 <br /> cis-1,2-Dichloroethene 108 106 83-126 2 30 <br /> Chloroform 110 109 82-131 1 30 <br /> Bromochloromethane 110 106 60-130 3 30 <br /> 1,1,1-Trichloroethane 116 114 81-142 1 30 <br /> Carbon Tetrachloride 119 116 79-155 2 30 <br /> 1,1-Dichloropropene 114 112 86-134 2 30 <br /> Benzene 110 109 83-128 1 30 <br /> 1,2-Dichloroethane 111 108 73-136 2 30 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> 0 <br /> (2) The background result was more than four times the spike added <br />