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 Coal Company, L.P
Water Quality Data
1982-2004
Lower Good Spring Creek
COLOWYO MINE
LGSC (LGSC)
Listing of S[ream Lab Data
Flow Field Field Field Lab Lab TDS NO3 NO2 NO3+NO2 NH3 Total Bigrb Ambig. SW Ambig. SW Ambig. SN Ambig. SN Ambig. SN Ambig. SM Ambig. SN Ambig. SN Ambig. SM Ambig. SW
No datum => Blank Rate pH temp Conduct pH Contluct -180 TSS as N as N as N as N P as CaCO3 Sulfate As Ca Fe Pb Mg Mn H9 Se Na Zn
cfs S.U. degC umho/cm S.U. umhc/cm m9ll mgll mg(I mge mgll mgll mgll mg/1 mgll mgll mgll mgll mgll mgll m9fl mg6 mgfl mgll mg8
8fatistics
Mean 6.28 8.06 9.43 1657.77 8.00 169739 1337.52 66.38 1.42 0.01 2.54 0.12 0.06 398.69 fifi740 000 142.77 0.60 0.03 747.61 0.12 0.00 0.01 72.19 0.02
Std. Dev. S.W 0.42 6.05 377.23 0.23 321.53 360.66 268.45 082 0.07 2.28 0.24 0.07 77.25 1fi0.5B 0.00 25.47 0.63 003 28 B7 0.06 0.00 0.00 25.93 0.03
Coef Var.
Range 46.94 4.7 25.6 2160 2.4 2659 3330 3696 3.77 0.04 7.99 2.25 0.495 572 685 0.0774 140 4.24 0.199 749.4 0315 0.0009 0.029 144.3 0.195
Maz 47 9.3 25 2900 B.5 2820 4050 3700 4.1 0.05 8.29 2.2fi 0.5 602 945 0.078 208 4.27 0.2 226 0.32 0.001 0.03 764 0.2
Min 0.06 4.fi -0.6 740 6.1 161 720 2 0.33 0.07 03 0.01 0.005 30 260 0.0006 68 0.03 0.001 76.6 0.005 0.0001 0.001 19.7 0.005
Max at 427/7998 71/7&1997 726/ 7982 10/3/799fi 8179/ 1991 1/19/1993 11/82000 4/30/7985 7228/1989 5/7/2007 77/26/7985 17/14/1989 1!//7999 10/26/2002 12/4/1989 4q/1982 122811989 4/27/1998 5/172007 12/4/1989 4!7/7982 2/76/2006 10/6/1989 70/811990 70/1/2000
Min at 11/6/1999 7/82002 12/18/ 7996 4/52002 5174/ 1991 6123/1992 52&1995 9/60/7994 81102004 11/12006 8/77/7992 &702004 9/11/7997 5/74/1992 5120/1997 71/72004 3/1311984 2/7/1988 77/52007 520/1997 7/372000 6/7/1993 9202001 4/172000 628/1985
#Of Samples 257 207 247 207 282 26fi 127 279 41 37 92 96 97 707 707 107 140 114 107 761 705 707 107 709 707
Station Sample Flow Field Field Field Lab Lab TDS NO3 NO2 NO3+NO2 NH3 Total Bicarb Ambig. SW Ambig. SW Ambig. SN Ambig. SN Ambig. SA Ambig. SN Ambig. SN Ambig. 514 Ambig. SN Ambig. SW
Name Date Rafe pH Temp Conduct pH Conduct -180 TSS as N as N as N as N P as CaCO3 Sulfate As Ca Fa Pb Mg Mn Hg Se Na Zn
cfs S.U. degC umho/cm S.U. umho/cm mg6 mg/I mg/I mg/I mgll mg/I mg/I mg/I mgB mg/I mgll mg/I mg/I mg/I mgA mgA mgll mg/I mg4
LGSC 5137/7988 9.11 B.7 1240 7054 186 0.03 242 508 0.007 179 0.89 0.02 154 0.74 0.0002 0.009 45 0.07
LGSC 627/7988 4.38 7.8 1520 1376 76 0.02 296 700 0.001 176 0.39 0.02 147 0.07 0.0001 0.014 62 0.07
LGSC 729/1988 2.65 7.9 1660 5fi
LGSC &76/1988 2.75 7.6 1720 18
LGSC 9/19/1988 1.91 B.2 11 1880 7.7 1810 14
LGSC 10/12/1988 1.91 7.5 9 ~ 1870 8 1750 1508 14 0.12 0.02 406 607 0.007 164 0.28 0.02 187 0.11 0.0001 0009 79 0.01
LGSC 11130/1988 265 77 itE0 14
LGSC 12/6/7988 1.47 7.7 7860 30
LGSC 222/1989 1.8 7.8 7800 7480 70 0.11 0.087 390 761 0.007 158 0.26 0.02 173 0.13 0.0001 0.013 67 0.01
LGSC 3130/1989 3.77 7.9 1120 6
LGSC 5/1/1989 77 1640 1294 32 3.65 0.1 0.044 330 663 0.001 145 0.35 0.02 151 0.09 0.17001 0009 59 0.01
LGSC 526/1989 2.39 8.04 196fi 7.B 2000 1626 16 0.16 0032 378 850 0.001 193 0.51 0.02 202 0.13 0.0001 0.012 0.07
LGSC 727/7989 1.36 8.18 1893 8.1 1920 1628 40 7.87 0.01 0.714 400 648 0.001 177 0.28 0.14 185 0.11 0.0001 0.007 88 0.07
LGSC 70/4/7989 1 8.26 2260 8.3 2040 1806 16 7.44 0.09 0.049 458 897 0.001 718 0.49 0.02 117 0.1fi 0.0001 0.03 137 0.07
LGSC 1214/79&9 8.2 2200 1830 14 2.26 0.03 404 945 0.001 202 0.78 0.02 228 021 0.0001 0007 94 0.01
LGSC 12/28/1989 1.26 8 2150 1738 fi 4.1 0.29 0.03 492 906 0.001 208 1.32 0.02 212 0.18 0.0001 0.015 97 0.07
LGSC 2/28/1990 2.39 8.1 7820 1574 4 4.3 0.15 0.016 478 798 0.001 200 0.36 0.02 210 0.18 0.001 0.004 79 0.07
LGSC 3/27/1990 3.19 8.3 1450 1454 76 2.9 0.05 0.023 376 747 0.004 165 0.31 0.02 185 0.07 0.0001 0.005 76 0.07
LGSC 4/30/1990 2.52 B.2 1920 1616 8 2.4 0.12 0.013 422 833 0.001 188 0.35 002 167 0.09 0.0001 0.008 79 0.07
LGSC 5/30/1990 2.52 7.81 7799 8.1 1870 70
LGSC fi29/1990 1.15 8.15 2740 7.9 1970 72
LGSC 7/79/1990 7.B 8.51 2090 8.3 1960 74
LGSC 8/9/7990 0.6 B.fi6 75 2140 8 2060 1790 16 0.35 0.05 0.027 517 891 0.002 181 0.34 0.05 163 0.12 0.0001 0.004 700 0.07
LGSC 9/5/1990 7.9 7950 8
LGSC 921/1990 0.6 7.9 2180 8
LGSC 11f9/1990 1.26 B.7 2120 7748 24 1.27 0.09 0.057 442 972 0.003 1W 0.84 0.02 1fiB 0.16 0.0001 0.001 90 0.07
LGSC 725/1991 2.39 B.1 1810 7678 8 2.67 0.23 0.01 390 844 0.007 166 0.27 002 170 0.11 0.0001 0.006 79 0.07
LGSC 328/1991 3.06 7.9 2740 78 '
LGSC 4/76/1991 3.34 7.9 1750 78
LGSC 5/7711991 6.86 8.1 1760 13Bfi B 1.22 0.11 O.Od 375 691 O.W2 165 0.29 002 135 0.07 0.0001 0.005 55 0.01
LGSC 62fi/1991 126 7.7 1980 72
LGSC 723/1991 1.26 7.9 7540 36
LGSC 8/19/1997 0.88 72 8.5 7750 1708 70 0.35 0.03 0.035 430 910 0.007 1fi5 0.77 002 152 0.12 0.0001 0.001 93 0.2
LGSC 9/30/1997 08 11 7.7 2320 2
LGSC 70/76/1997 0.64 15 B.2 1710 7686 2 0.36 0.09 0.03 57fi 864 0.001 778 0.06 003 166 0.13 00001 0001 700 0.07
CF 17.76 2004
LGSC04.xls 32200570'.03 AM