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COLOWYO MINE Listing of Stream Lab Data Colowyo Coal Company, L.P. Water Quality Data 1993-2004 Lower Taylor Creek (LTC) Flaw Field Field Field Lab Lab TDS N03+NO2 NH3 Bicarb Ambig. Ambig. SN Amhig. SN Ambig. SN Ambig. SN Ambig. SW Ambig. SN Ambig. SM Ambig. SM Ambig. SN Ambig. SW No datum => Blank Rata pH Temp Conduct pH Conduct -180 TSS as N as N as CaCO3 Sulrate P As Ca Fe Ph Mg Mn Hg Se Ne Zn cfs S.U. deg C umho/cm S.U. umhdcm mg/I mgA mg/I mg/I mg/I mg/I mg/I mgA mgA mg/I mg/I mgA mgA mg/I mgA mg/I mg/I Statistics Mean 0.52 8.32 1 0.48 1613.23 8.09 1592.35 1127.76 4fi8.15 1.45 0.08 302.67 512.25 3.80 0.00 90.86 4.94 0.04 116.88 0.38 0.00 0.01 92.79 0.06 Std. Dev. 0.95 0.33 6.50 452.45 0.27 438.92 355.76 2035.66 1.45 0.07 83.38 211.36 24.93 0.00 25.92 18.67 0.05 45.65 1.24 0.00 0.00 36.07 0.14 Goer. var. Range 6.3 1.9 25.1 3357.2 1.6 3370 1786 20582 4.94 0.36 400 1109 184.995 0.027 108.2 131.99 0.28 230 7.845 0.0009 0.015 168 0.795 Max 6.3 9.3 25 3580 S.fi 3570 1930 20584 4.95 0.38 467 1128 185 0.028 134 132 0.3 238 7.85 0.001 0.016 174 0.8 Min 0 7.4 -0.1 222.8 7 200 144 2 0.01 0.02 67 19 0.005 0.001 25.8 0.01 0.02 8 0.005 0.0001 0.001 6 0.005 Max at 429/198fi 8/12/ 1983 6/18/1987 3/6/1998 2/25/1991 3/6/1998 10/5/1989 3/1/1988 6/28/1985 2/5/2001 11/18/1997 10/5/1989 3/31/1988 3/1/1998 2/24/1986 2/28/1990 2/28/1990 10/12/1988 3/1/1988 2/5/2001 8/13/1984 1 0/5/1989 228/1990 Min at 12/132002 628/ 1985 11/11/ 1999 5/19/1997 222/ 1989 228/1990 228/1990 3/30/1989 2/72000 10/5/1989 3/52001 228/1990 9/11/1997 1/6/1998 2/52001 9/13/1995 4/172000 228/1990 7/1/1996 6/1/1993 10/3/1996 228/1990 628/1985 9 Of Samples 745 92 98 90 132 132 59 132 47 48 55 55 55 55 57 59 56 53 54 55 55 55 55 Station Sample Flow Field Field Field Lab Lab TDS N03+NO2 NH3 Bicarb Ambig. Ambig. SM Ambig. SN Ambig. SN Ambig. SM Ambig.SW Ambig. SM Ambig. SN Ambig. SN Amhig. SN Ambig. SN Name Date Rate pH Temp Conduct pH Conduct -180 TSS as N as N as CeCO3 Sulfate P As Ca Fe Pb Mg Mn Hg Se Na Zn ds S.U. deg C umho/cm S.U. umho/cm mg/I mg/I mg/I mg/I mg/I mgA mg/I mgA mgA mgA mg/I mgA mg/1 mgA mg/I mgA -- mg/I LTC 222/1965 -- -'- --- - 8.3 1990 1745 360 2.7 0.02 --- 376 494 0.29 0.002 ---_113 ~8.1 0.02 ` 115 --- 0.22 0.001 0.008 --111 ^ O.Ofi7 LTC 4/30/1985 12 8 1280 1770 ' LTC 5/31/1985 a 8.1 1620 1230 362 4.93 0.05 305 549 0.02 0.001 126 1.77 0.02 145 0.12 0.001 0.01 68 0.011 LTC 628/1985 2 7.4 1525 8 1750 1200 160 4.95 0.14 290 599 0.02 0.001 109 0.97 0.02 150 0.04 0.0002 0.008 76 0.005 LTC 7/8/1985 2.4 7.8 1675 LTC 722/1985 4.74 8.2 13 1700 LTC 729/1985. 8 1900 10 LTC &7/1985 0 8 19 1700 LTC 821/1985 O.fifi 7.8 15 1750 7.9 1980 14 LTC 9/6/1985 0 7.5 12 1700 LTC 9/18/1985 8.4 1820 1440 20 1.6 0.1 259 792 0.02 0.001 105 0.05 0.02 181 0.02 0.0002 0.002 121 0.01 LTC 10116/1985 1.22 8.3 9 2025 8 2270 66 LTC 1028/1985 1.2 8.2 9 1700 LTC 10/30/1985 8.1 1830 1423 74 3.23 0.04 330 790 0.02 0.007 130 0.14 0.02 190 0,05 0.0002 0.002 117 0.01 LTC 1126/1985 0.39 3.5 7.5 1690 SOD LTC 1/13/1986 0.01 8.2 7 1700 LTC 128/1986 0.09 1 8.4 1300 316 LTC 2/24/1986 0.49 8 8.3 1810 1225 6210 3.33 0.15 350 584 3.32 0.003 134 2.8 0.02 2.34 0.0001 0.015 103 0.17 LTC 327/1986 0.64 4 8 1920 924 LTC 429/1986 6.3 8 8 1110 765 LTC 5/30/1986 2.44 18 7.9 1350 202 LTC 6/17/1986 8.3 1500 1140 136 3.26 0.02 285 539 0.1 0.001 100 0.37 0.04 0.0002 0.012 83 0.01 LTC 6/18/1986 2.2 8.1 18 1400 LTC 70/1986 1.8 6.4 19 1380 LTC 724/1986 0.54 8.4 18 1475 8.1 1470 12 LTC 8/4/1986 0.37 8.7 18 1550 8.2 1510 1262 8 2.11 0.02 278 638 0.06 0.001 96 0.04 0.02 0.01 0.0002 0.011 87 0.01 LTC 9/10/1986 0.49 8 10 1400 LTC 925!1986 0.54 8 8 1600 8.1 ifi20 82 0.23 LTC 10/13/1986 8 8.3 1750 1388 26 2.89 0.02 340 650 0.02 0.001 104 0.12 0.02 0.06 0.0002 0.009 107 0.01 LTC 1125/1986 0.02 1 7.7 1830 60 LTC 2/12/1987 0.26 0 8.1 1230 912 266 3.5 0.17 264 364 0.28 0.002 99 0.96 0.02 87 0.19 0.0002 0.006 72 0.01 LTC 3/25/1987 1.06 0 7.fi 2000 230 CF 17.14 2004 LTC04.xls 322005 9:42 AM