2008-03-13_REPORT - C1981019 ‎(3)‎

• Permit No: C1981019
• IBM Index Class Name: REPORT
• Doc Date: 3/13/2008
• Doc Name: 2007 AHR Exhibit 2A & Exhibit 2B
• From: Colowyo Coal Company
• To: DRMS
• Annual Report Year: 2007
• Permit Index Doc Type: Hydrology Report
• Email Name: SB1
• Media Type: D
• Archive: No

~~ ~COIDPa°Y Exhibit 2A
Aanua! Rerlemetim aad Xydmlogy Repart
Water Quality Date
1982-2005
COLOWYO MINE
LGSC I.owerGoadSpring Creek ~
~~
Listing of Sheam Lab Data i
Flow Field Fiekf Field Lab Lab TDS NO3 NO2 NO3+NO2 NH3 Total Bicarb Ambig. SW Ambig. SW Ambig. SNAmbig. SW Ambig. SNAmbig. SWAmbig. SWAmbig. SW Ambig. SNAmbig. SW
No datum => Blank Rate pH Temp Conduct pH Conduct •180 TSS as N as N as N as N P as CaCO3 Sulfate As Ca Fe Pb Mg 61n Hg Se Na Zn
cfs S.U. deg C umholcm S.U. umholcm mgA mgA mgfl mgA mgA mgA mgA mgA mgA mgA mgA mgA mgA mgfl mgA mgA mgA mgA mgA
Statlstlcs
Mean 4.14 8.07 9.37 1613.04 8.01 1703.38 1339.89 63.32 1,31 0.03 2.36 0.12 0.06 407.32 654.68 0.00 140.82 0.60 0.05 145.92 '0.13 0.00 0.01 72.65 0.02
Std. Dev. 5.32 0.41 5.97 368.28 0.23 317.35 358.16 258.93 0.80 0.04 2.21 0.22 0.07 81.33 160.75 0.00 25.63 0.63 0.05 29.73 0.06 0.00 0.00 25.76 0.03
Ccef. Var.
Range 46.94 4.7 25.6 2160 2.4 2659 3420 3698 4 0.09 8.19 2.25 0.495 573 110 0.0177 198 4.24 0.199 225.3 0.315 0.0009 0.0295 144.3 0.195
Max 47 9.3 25 2900 6.5 2820 4050 3700 4.1 0.1 8.29 2.26 D.5 603 945 0.018 208 4.27 0.2 226 0.32 0.001 0.03 164 0.2
Min 0.06 4.6 -0.6 740 6.1 161 630 2 0.1 0.01 0.1 0.01 0.005 30 235 0.0003 10 0.03 0.001 0.7 D.005 0.0001 D.0005 19.7 0.005
Max at 4/27/1998 11118/1997 71261 1982 10/3x1996 811911991 iN9/1993 11/812000 4/3011985 121281 1989 SR/2001 1212611985 1211411989 iR/1999 10/24/2002 12!411989 4811982 12/28N989 4127!1998
SN7l2001 12/4/1989 48/1982 211612004 t Or4N989 10!811998 1012/2000
Min at 1216!1999 7!8!2002 12118! 1996 4/512002 SN411991 6123!1992 5/2311995 9130!1994 8/1012004 1111!2004 8117/1992 8110/2004 9!1111997 5/14/1992 512011997 11N/2004 3!1311984 211!1988
11/5/2001 Sr20N997 1!31/2000 611/1993 9/20/2001 411712000 6/28/1985
# Of Sample: 280 224 270 224 305 289 135 3D1 49 45 100 104 105 115 115 115 163 122 115 164 ,113 115 115 117 115
Station Sample Flow Field Field Field Lab Lab TDS NO3 NO2 NO3+NO2 NH3 Total Bicarb Ambig. SW Ambig. SW Ambig. SNAmbig. SWAmbig. SWAmbig. SWAmbig. SWAmbig. SWAmbig. SWAmbig. SW
Name Oate Rate pH Temp Conduct pH Conduct -180 TSS as N as N as N as N P as CaCO3 Sulfate As Ca Fe Pb Mg Mn Hg Se Na Zn
cfs S.U. deg C
' umhalcm S.U. umholcm mgA mgfl mgfl mgfl mgr/ mgA mgA mgA mgA mgA mgA mgA
~ mgll
~ mgfl mgfl mgfl mgA mgA mgr/
LGSC 3111!2004 3.2 8.2 4.7 2000 8 1870 8 161 155
LGSC 415x2004 2.15 8.3 8 1860 8.1 1800 10 149 146 ~
LGSC 5/4x2004 2.39 8.5 8.6 1920 6.1 1740 1470 5 0.74 0.01 0.73 0.1 0.03 455 730 0.0007 146 0.29 0.04 153 0.118 0.0002 0.004 88 O.D1
LGSC 6117x2004 1.91 8.7 11.3 1930 7.9 1760 5 145 158 ~,
LGSC 7119!2004 3.48 8.5 16.2 1910 6.1 1840 50 146 161 i
LGSC 8/1012004 1.26 7.9 12.3 2090 8 1880 1650 18 0.33 0.01 0.34 0.06 0.07 543 770 O.OD1 151 0.48 0.04 167 0.24 0.0002 0.003 104 0.01
LGSC 9116x2005 1.26 7.9 9.5 2230 7.9 1850 i6 160 176
LGSC 10!512004 2.92 8 8 2180 6.1 1830 14 151 169
LGSC 11!1!2004 4.7 8 3.3 2100 8 1800 1600 5 0.91 0.01 0.91 O.D7 0.08 450 790 0.0006 131 0,42 D.D4 149 0,261 0.0002 O.OD4 93.7 D.01
LGSC 12/1412004 3.06 8 2 2248 8.1 2010 5 157 162 ~~
LGSC 1!6/2005 2.65 8 1.6 2078 6.1 2070 t0 0.7
LGSC 2/10/2005 1.58 7.6 0.5 1990 8.1 2070 1590 5 1.37 0.01 1.36 0.05 0.0.5 501 770 D.0007 146 0.23 0.04 156 0.15 0.0002 D.OD6 92.7 0,02
LGSC 3/9l20D5 1.31 8.09 3.4 2019 8.2 1820 7 153 159

LGSC
4120!2005
6.23
8.19
6.9
1720
8.2
1540
31
140
141 I
LGSC 5123lZOD5 9.95 8.42 14.5 1360 8.3 851 630 220 2 0.1 2 0.1 0.15 282 235 0.003 90 2.34 0.2 62 0.11 0.001 0.005 24 0.05
LGSC 6/25/2005 4.22 8.46 14.3 1580 8.3 1500 32 145 144
LGSC 7N9l2005 3.2 826 12.4 1770 8.2 1600 10 132 141
LGSC 8!22/2005 1.16 8.1 14.4 2030 8.2 1820 1520 ZO 0.1 0.1 0.1 0.1 0.05 483 722 0.003 142 D.O5 0.2 137 0.17 O.OD1 0.005 81 0.05
LGSC 9/14/20D5 0.8 8.22 9.6 2110 8.3 1970 16 139 177
LGSC 10!17!2005 2.03 8.15 12.6 1840 8.2 1700 5 143 155
LGSC 11!21!2005 1.69 8.3 3.6 1910 8.4 1820 1490 5 t.7 0.1 1.7 0.2 0.05 476 685 0.003 142 0.3 0.2 158 0.16 0.001 0.005 78 0.05
LGSC 12/1312005 1.07 824 3.4 1990 8.2 1980 44 156 170
LGSC 1!18/2006 1.91 8.36 4.8 1880 8.2 1740 5 150 155
LGSC 2/2112006 1.69 7.68 2.4 1860 8.1 1860 12 145 146
LGSC 3x1512006 2.27 7.81 62 1820 8.1 1810 1460 8 1.3 0.1 1.3 0.1 0.05 478 694 0.003 141 0.21 0.2 142 0.09 0.001 0.007 94 0.05
LGSC 4N 212006 5.03 8.27 11.6 1520 8.3 1560 6 123 120
LGSC 5x1812006 3.92 8.19 13.2 1560 8.3 16D0 1160 12 0.5 0.1 0.5 0.1 0.1 525 410 0.003 127 0.77 0.2 118 0.17 0.001 0.005 58 0.05
LGSC 6/612006 1.69 8.01 12.7 1850 8.2 1860 28 149 149
LGSC 712512006 0.89 823 17.4 1980 8.3 1920 10 148 161
LGSC 8!2312006 0.36 7.76 14.3 2190 8.4 2040 1710 9 0.1 0.1 0.1 02 0.1 50.5 716 0.003 159 0.48 0.2 169 0.2 0.001 0.005 124 0.05
LGSC 9x20120D6 2.65 8.12 10 1900 8.4 1840 9 139 142
LGSC 1011612006 2.15 8.3 7.2 1850 8.12 1900 40 152 155
LGSC 11N5/2006 1.69 8.46 3.8 1950 8.2 1880 1460 5 1 0.1 1 0.1 0.05 438 635 0.003 142 0.28 0.2 155 0.15 0.001 0.005 81 0.05
LGSC 12113/2006 2.03 8.51 4.6 2010 8.4 1830 5 156 158
LGSC 1/11/2007 1.47 6.44 3.8 1920
LGSC 28/2007 2.39 8.46 3.7 1610 8.3 1530 44 110 115
LGSC