2012-03-09_REPORT - C1981019 (8)

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Colowyo Coal Company 2011 Annual Reclamation and Hydrology Report COLOWYO MINE LGSC Exhibit 2A Water Quality Data 1982 -2010 Lower Good Spring Creek (LGSC) Listing of Stream Lab Data Flow Field Field Field Lab Lab TDS NO3 NO2 NO3 +NO2 NH3 Total Bicarb No datum => Blank Rate pH Temp Conduct pH Conduct -180 TSS as N as N as N as N P as HCO3 Sulfate As Ca Fe Pb Mg Mn Hg Se Na Zn cfs S U deg C umho /cm S U umho /cm mg/1 mgA mg/1 mgA mgA mgA mgA mgA mgA mgA mgA mgA mgA mgA mg/1 mgA mgA mgA mg/1 LGSC Statistics Mean 4 07 8 13 9 29 1605 22 8 05 1698 00 1336 68 60 92 144 0 05 2 30 0 12 0 07 426 16 65 50 0 00 140 17 0 65 0 05 144 27 0 13 0 00 0 01 72 85 0 03 Std. Dev. 5 22 0 72 5 89 356 15 0 24 309 98 338 42 248 18 0 77 0 08 2 08 0 21 0 06 96 72 166 45 0 00 24 76 0 92 0 06 29 43 006 0 00 0 00 25 04 0 03 Coef. Var. Range 46 94 13 2 25 6 2160 2 5 2659 3420 3698 4 0 59 8 19 2 25 0 495 741 9 710 0 0177 198 8 81 0 199 225 3 0 385 0 0009 0 0295 144 3 0 195 Max 47 17 8 25 2900 8 6 2820 4050 3700 4 1 0 6 8 29 2 26 0 5 747 945 0 018 208 8 84 0 2 226 0 39 0 001 0 03 164 0 2 Min 006 4 6 -0 6 740 6 1 161 630 2 0 1 0 01 0 1 0 01 0 005 5 1 235 0 0003 10 0 03 0 001 0 7 0 005 0 0001 0 0005 19 7 0 005 Max at 4/27/1998 11/18/1997 7/26/1982 10/3/1996 8/19/1991 1/19/1993 11/8/2000 4/30/1985 12/28/1989 5/7/2001 12/26/1985 12/14/1989 1/7/1999 2/23/2010 12/4/1989 4/7/1982 12/28/1989 8/13/2008 11/2/2009 12/4/1989 8/13/2008 2/16/2004 10/4/1989 10/8/1998 10/2/2000 Min at 12/6/1999 7/8/2002 12/18/1996 4/5/2002 5/14/1991 6/23/1992 5/23/1995 9/30/1994 8/10/2004 11/1/2004 8/17/1992 11/2/2009 9/11/1997 5/14/1992 5/20/1997 8/14/2007 3/13/1984 2/1/1988 11/5/2001 5/20/1997 7/31/2000 6/1/1993 9/20/2001 4/17/2000 6/28/1985 # Of Samples 313 257 303 257 337 321 155 332 68 58 119 146 117 135 135 127 195 142 127 196 133 127 134 137 127 Station Date LGSC 4/30/1984 7 9 9 8 1 1010 414 LGSC 5/31/1984 82 1090 1150 LGSC 6/8/1984 81 17 LGSC 7/25/1984 16 8 23 1650 7 9 1360 226 LGSC 8/13/1984 10 7 9 20 1725 8 1 1740 1430 78 6 2 0 02 0 03 315 713 0 002 138 0 98 0 02 150 0 09 0 0005 0 014 62 0 015 LGSC 9/6/1984 7 6 8 2 13 1820 7 9 1670 30 LGSC 10/2/1984 9 1 8 1 13 1750 8 1790 1340 54 3 17 0 02 0 02 356 711 0 002 152 0 84 0 02 148 0 13 0 0005 0 009 64 0 025 LGSC 11/1/1984 745 8 10 1800 75 1600 66 LGSC 11/6/1984 75 1600 66 LGSC 11/16/1984 81 1920 114 LGSC 12/12/1984 81 1990 126 LGSC 2/22/1985 8 1 1870 1380 64 6 7 0 02 0 1 402 704 0 002 152 1 17 0 02 155 0 15 0 0005 0 007 70 0 048 LGSC 4/30/1985 15 8 2 1110 3700 LGSC 5/31/1985 7 8 2 1580 1240 268 5 68 006 0 02 314 580 0 001 141 1 56 0 02 145 0 17 0 0005 0 008 45 0 012 LGSC 6/28/1985 18 4 7 4 1675 7 9 2050 1460 68 7 92 0 17 0 02 375 788 0 001 168 0 8 0 02 180 0 09 0 0002 0 006 74 0 005 LGSC 7/8/1985 12 4 7 6 1700 LGSC 7/22/1985 1306 7 8 12 1850 LGSC 7/29/1985 7 8 2000 70 LGSC 8/7/1985 7 81 8 15 1825 LGSC 8/21/1985 764 7 6 12 1950 7 7 2170 8 LGSC 9/6/1985 9 02 6 8 9 1825 LGSC 9/18/1985 7 68 13 8 1980 1650 15 7 68 0 03 0 02 376 873 0 001 171 0 15 0 02 189 0 04 0 0002 0 002 96 0 01 LGSC 10/3/1985 5 54 6 9 9 1950 LGSC 10/16/1985 6 77 8 6 7 1825 7 8 1910 12 LGSC 10/28/1985 5 53 8 2 8 1875 LGSC 10/30/1985 8 1 1860 1506 24 7 6 006 0 02 388 840 0 002 190 0 13 0 02 180 0 08 0 0002 0 003 88 0 01 LGSC 11/26/1985 8 11 4 7 5 1720 16 LGSC 12/26/1985 10 16 0 7 9 1860 1570 50 8 29 0 03 0 02 384 834 0 001 191 0 34 0 02 177 0 12 0 0002 0 011 81 0 01 LGSC 1/28/1986 1355 2 8 1940 68 LGSC 2/24/1986 13 55 8 8 3 1700 1278 420 5 8 0 02 0 35 346 642 0 001 154 1 15 0 02 142 0 24 0 0001 0 017 66 0 02 LGSC 3/27/1986 1125 4 8 1630 1230 LGSC 4/29/1986 44 05 8 8 1 1220 1040 LGSC 5/30/1986 25 69 14 8 1440 236 LGSC 6/17/1986 16 51 8 4 16 1550 8 1 1650 1340 128 6 46 0 02 0 08 355 675 0 001 151 0 55 0 02 152 0 08 0 0002 0 016 60 0 01 LGSC 7/7/1986 11 25 8 3 16 1575 LGSC 7/24/1986 7 15 8 16 1700 7 9 1690 52 LGSC 8/4/1986 5 53 8 5 16 1700 8 1670 1464 40 8 15 0 02 0 08 352 757 0 001 143 0 16 0 02 174 0 03 0 0002 0 019 73 0 01 LGSC 9/10/1986 5 36 8 1 8 1700 LGSC 9/25/1986 5 2 7 6 7 1740 7 9 1720 18 LGSC 10/13/1986 4 38 8 6 1850 8 1 1850 1546 104 7 4 0 02 0 13 385 807 0 001 152 0 56 0 02 177 0 12 0 0002 0 011 82 0 02 LGSC 11/25/1986 5 36 1 7 7 1810 30 LGSC 12/31/1986 3 77 0 5 8 1920 36 LGSC 2/12/1987 454 2 8 2 1710 1438 38 7 48 0 06 0 09 386 716 0 001 183 034 0 02 174 0 14 0 0002 0 019 88 0 01 LGSC 3/24/1987 6 05 7 9 1830 58 LGSC 5/1/1987 18 6 12 7 9 1080 970 LGSC 6/2/1987 696 11 7 8 1600 1148 94 5 22 0 02 0 06 340 603 0 001 149 0 51 0 02 140 0 1 0 0002 0 014 50 0 01 LGSC 6/4/1987 6 96 11