REP45377

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 3/16/2005
• Doc Name: 2004 AHR Section 2
• From: Colowyo Coal Company L.P.
• To: DMG
• Annual Report Year: 2004
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

COLOWYO MINE
Listing of Stream Lab Data
Colowyo Coal Company, L.P.
Water quality Data
1983-2004
Lower Taylor Creek
(LTC)
Flow Field Field Field Leb Lab TDS N03+N02 NH3 Bicarh Amhig. Ambig.SM Ambig. SN Ambig. SN Ambig. SN Ambig.SW Amhig. SN Ambig. SN Ambig. SN Ambig. SN Ambig.SN
No datum =~ Blenk Rate pH Temp Conduct pH Conduct -180 TSS as N as N as CaC03 Sulfate P As Ca Fe Ph Mg Mn H9 Se Na Zn
cfs S.U. deg C umho/cm S.U. umho/cm mgfl mg/I mg/I mgfl mg/l mgfl mgfl mg/l mg/l mgfl mg/l mgfl mg/I mg/I mg/I mgfl mgfl
Statistics
Mean 0.52 8.32 10.48 1613.23 8.09 1592.35 1127.76 468.15 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 8.50 452.45 0.27 438.92 355.76 2035.66 1.45 0.07 83.38 211.36 24.93 0.00 25.92 18.87 0.05 45.65 1.24 0.00 0.00 36.07 0.14
Caef. Var.
Range fi.3 1.9 25.1 3357.2 1.6 3370 1786 20582 4.94 0.36 400 110.9 184.995 0.027 108.2 131.99 0.28 230 7.845 0.0009 0.015 168 0.795
Max 8.3 9.3 25 3580 e.6 3570 7930 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.i 222.8 7 200 744 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
Nlax at 4/29/198fi 8/72/ 1983 6/18/1987 3/6/1998 225/ 1991 3/6/1998 10/5/1989 3/1/1988 6/28/1985 2/52007 71/78/1997 10/5/7989 3/3111988 3/1/1998 224/1986 2Y16/7990 2/28/1990 10/72/1988 3/1/1988 2/5/2001 8/13/1984 10/5/1989 2Y18/1990
Min at 12/132002 6/28/ 1985 11/11/1999 5/19/1997 222/ 1989 228/1990 228/1990 3/30/1989 2/72000 10/5/1989 3/52001 2/28/1990 9/11/1997 1/6/1998 2/52001 9/13/1995 4/172000 2/28/1990 7/1/1996 6/1/1993 10/3/1996 228/1990 628/1985
%O(Samples 145 92 98 90 132 132 59 132 47 48 55 55 55 55 57 89 56 53 54 55 55 55 55
Station Sample Flow Field Field Field Lah Lab TDS N03+N02 NH3 Biprb Ambig. Ambig. SN Ambig. SV~ Ambig. SN Ambig. SN Ambig. SW Amhig. SN Ambig. SN Ambig. SN Ambig. SN Ambig. SN
Name Date Rate pH Temp Conduct pH Conduct -180 TSS as N as N as CeC03 Sultate P As Ca Fe Pb Mg Mn Hg Se Na Zn
cfs S.U. deg C umho/cm S.U. umho/cm mgfl mg/I mg/I mgfl mg/I mgfl mg/I mg/I mg/I mgfl mg/l mgfl mg/I mg/I mg/I mgfl mg/I
LTC 5/1/1987 2.78 14 7.8 1240 952
LTC 6/4/1987 0.76 71
LTC 6/10/1987 0.6 7.9 1410 982 8fi 2.6 0.02 275 465 0.04 0.007 91 0.3 0.02 118 0.04 0.0002 0.008 66 0.01
LTC 6/18/1987 0.49 8.2 25 1480
LTC 1221/1987 0.26 0 7.9 1990 6
LTC 3/1/1988 0.26 8.7 1290 1040 20584 3.13 0.22 320 407 10.3 0.028 701 4 0.03 100 7.85 0.0002 0.006 75 0.48
LTC 3+31/1988 0.15 7.9 1650 147fi 2230 4.55 0.15 406 667 185 O.OD3 128 2.84 0.02 159 0.83 0.0002 0.008 756 0.04
LTC 420/1988 0.09 7.9 7970 162 0.03
LTC 5/31/1988 0.2fi 8.2 1370 1112 272 0.03 247 515 0.14 0.001 95 0.71 0.02 128 0.1 0.0002 0.007 88 0.01
LTC 627/1988 0.2fi 8.2 1660 1274 24 0.04 265 650 0.02 0.001 82 0.47 0.02 143 0.06 0.0001 0.007 94 0.01
LTC 729/1988 0.22 8.1 7870 100
LTC 8/16/1988 0.12 8.5 19 1580 7.8 1880 438
LTC 9/19/1988 0.09 8.2 15 7280 7.8 1770 6
LTC 10/12/1988 0.37 8 14 2010 8.1 1990 1804 62 0.12 320 1066 0.04 0.001 111 0.22 0.02 238 0.05 0.0001 0.004 12fi 0.07
LTC 11/30/1988 0.01 7.5 1880 2
LTC 222/1989 0 7 447 318 28 0.11 83 66 0.323 0.002 28 0.5 0.02 1fi 0.06 0.0001 0.001 28 0.01
LTC 3130/1989 0.003 7.8 1280 2
LTC 10/8/1989 0.003 8.67 2440 8.6 2190 1930 26 0.02 310 1128 0.055 0.001 88 O.qi 0.03 160 0.01 0.0001 0.008 174 0.01
LTC 228/1990 0.37 8 200 144 6940 7.39 0.24 76 19 3.79 0.003 32 132 0.3 8 4.3 0.0001 0.01 6 0.8
LTC 5/30/1990 0 8.8 15 1868
LTC 7/19/1990 0 8.8 17 1991 8.4 7960 38
LTC 11/9/1990 0.09 8.2 1510 1132 36 0.02 0.08 240 549 0.11 0.002 96 57 0.02 101 0.02 0.0001 0.001 80 0.07
LTC 225/1991 0.014 4 8.6 1410 1168 176 0.4 0.21 264 597 0.7 0.006 117 15.3 0.02 98 0.4 0.0001 0.001 94 0.09
LTC 421/7993 0.07 8 3 2290 8 2250 26
LTC 527/1993 3.5 8.8 17 1030 8.4 997 596
LTC 6/1/1993 1.4 8.4 19 989 8.3 958 608 8 0.55 0.11 238 233 0.02 0.001 84 2.4 0.02 64 0.03 0.0001 0.004 32 0.07
LTC 523/1995 0.007 8.2 15 2080 8.3 2030 1560 5 0.08 0.11 310 740 0.74 0.006 124 4.7 0.02 156 0.08 0.0002 0.002 124 0.04
LTC fi/19/7995 0.007 8.5 74 1245 8.4 1270 26
LTC 726/1995 0.007 8.3 72 1850 8.2 1890 5
LTC 824/1995 0.003 8.2 15 1880 8.4 1900 12
LTC 9/13/1995 0.003 8.4 14 1830 8.4 1840 1380 5 0.06 0.05 329 658 0.005 0.001 103 0.01 0.02 761 0.005 0.0002 0.002 131 0.01
LTC 1025/1995 e.t 1700 8.2 1710 5
CF 17.74 2004
LTC04.xls 3/22005 9:42 AM