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<br />CORE LABORATORIES
<br />Q U A L I T Y C O N T R O L R E S U L T S
<br />Job Number.: 983261 Report Oat e.: 12/29/98
<br />CUSTOMER: Greystone PROJECT: OTRY 484-03 Castif to Cnty A77N: Nick Nathis
<br />Test Method........: EPA 200.7 Batch .............: 42373 Analyst...: lm[
<br />Method Description.: Metals Analysis(ILAP ), Trace Units .............: mg/L Test Code.: NI
<br />Parameter..........: Nickel (Ni)
<br />OC Lab ID Reagent QC Result GC Result True Value Orig. Value Lalc. Result • Limits Date Time
<br />CCB 9812168 0.00024 0.005 12/16/1998 1300
<br />PDS 983261-1 9809295 0.46088 0.50 0.00013 92.2 X 75-125 12/16/1998 1332
<br />PSD 983261-1 9809295 0.46390 0.46088 0.50 0.00013 92.8 Y. 75-125 12/16/1998 1335
<br /> 0.7 R 20
<br />CCV 9812161 2.46040 2.5 98.4 X 90-110 12/16/1998 1340
<br />CCB 9812168 -0.00000 0.005 12/16/1998 1348
<br />SD 983261-1 -0.00081 0.00013 12/16/1998 1357
<br />MB 1216 -0.00126 0.005 12/16/1998 1475
<br />SB 9809295 0.52662 0.50 105.3 Y. 80-120 12/16/1998 1419
<br />LCS 980865 0.55183 0.484000 114.0 X 78.3-121.7 12/16/7998 1423
<br />CCV 9812161 2.32677 2.5 93.1 Y. 90-110 12/16/1998 1540
<br />CCB 9812168 -0.00006 0.005 12/16/1998 1545
<br />CCB 9812168 -0.00052 0.005 12/16/1998 1552
<br />ISB 981120M 0.84457 0.9969 84.7 X 80-120 12/76/7998 7632
<br />CCV 9872161 2.34676 2.5 93.9 Y. 90-110 12/16/1998 1636
<br />CLB 9812168 0.00043 0.005 12/76/1998 1640
<br />Test Method........ : EPA 270.2 Batch .............: 42188 Analyst...: lmt
<br />Method Description.: Se(eni um (GFAA) Units .............: mg/L Test Code.: SE
<br />Parameter..........: Selenium (Se)
<br />OL Lab ID Reagent OC Result OC Result True Value Orig. Value Calc. Result • Limits Date Time
<br />]CV 981214V 0.04300 0.0400 107.5 X 90-110 12/14/1998 1048
<br />ICB 12148 -0.00009 0.005 12/14/1998 1051
<br />MB 1211 -0.00155 0.005 12/14/1998 1055
<br />SB 980826) 0.01982 0.020000 99.1 % 80-120 12/14/1998 1058
<br />MS 983271-1 980826) 0.02119 0.020000 0. 00191 96.4 % 75-125 12/14/1998 1105
<br />MSD 983271-1 980826) 0.02144 0.02119 0.020000 0. 00191 97.7 % 75-125 12/14/1998 1108
<br /> 1.2 R 2D
<br />SD 983236-3 -0.00125 0. 00173 12/14/1998 1114
<br />PDS 983261-1 9812108 0.01796 0.020000 -0. 00126 96.1 X 75-125 12/14/1998 1121
<br />PSD 983261-1 9812108 0.01773 0.01796 0.020000 -0. 00126 95.0 % 75-125 12/14/1998 1124
<br /> 1.3 R 20
<br />LLV 981214A 0.04887 0.050000 97.7 % 90-110 12/14/1998 1128
<br />CCB 12148 -0.00076 0.005 12/14/1998 1131
<br />SD 983261-1 -0.00122 -0. 00126 12/14/1998 1134
<br />MB 1209 -0.00172 0.005 12/14/1998 1138
<br />SB 980826) 0.01789 0.020000 89.5 X 80-120 12/14/1998 1141
<br />CCV 981214A 0.04856 0.050000 97.1 % 90-110 12/14/1998 1147
<br />CCB 12148 -0.00106 0.005 12/14/1998 1151
<br />MB 1211 -0.00200 0.005 12/14/1998 1154
<br />LCS 980866 0.02525 0.028400 88.9 X 80-120 12/14/1998 1157
<br />SB 980826) 0.02008 0.020000 100.4 X 80-120 12/14/1998 1201
<br />MS 983173-1 980826) 0.01913 0.020000 -0. 00034 97.3 X 75-125 12/14/1998 1207
<br />MSD 983173-1 980826) 0.01843 0.01913 0.020000 -0. 00034 93.8 Y. 75-125 12/14/1998 1211
<br /> 3.7 R 20
<br />SD 983237-1 0.00237 0. 01967 12/14/1998 1217
<br />CCV 981214A 0.04918 0.050000 98.4 % 90-110 12/14/1998 1227
<br />CCB 12148 -0.00164 0.005 12/14/1998 1230
<br />MB 1210 -0.00165 O.OOS 12/14/1998 1250
<br />SB 980826) 0.01712 0.020000 85.6 X 80-120 12/14/1998 1254
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