REP41255

• Permit No: C1996083
• IBM Index Class Name: REPORT
• Doc Date: 4/18/2007
• Doc Name: 2006 AHR Part 2
• From: J.E. Stover & Associates Inc
• To: DRMS
• Annual Report Year: 2006
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Bowie Resources,LLC Surtace Water
Bowie No. 2 Mine
2006 Annual Hydrology Report HUB-up
Hubbard Creek -Drainage System
Elevation - 6320
Initiated 9/30/1996 9/30/1998 9/30/1996 9/30/1996
Activated 4/1/2002 4/1/2002 4/1/2002 4/1/2002
Date 11/26/2006 9/14/2006 8/14/2008 3/29!2006
Summary Information
Baseline Operation
UNITS Min Ave Max Min Ave Max
Flow GFS 2.83 19.38 152.81 0.90 10.91 66.16 8.56 2.91 4.5 19.24
FieldComment
h su 7.8 8.5 9.0 6.7 8.2 8.9 8.4 8.4 8.4 8.2
Conductivity umhos/cm 70 189 280 80 168 280 170 200 220 110
Temperature Celsius 0.4 9.4 20.9 0.2 8.5 15.7 3.1 15.7 12.4 6.4
DO mg/L 0.0 3.3 14.0 0.0 9.3 12.0 10.4 8.9 8.8 9.1
UNITS
Bicarbonate mg/L 57 114 149 46 109 159 94.46 104
Chloride m /L <MDL 1 2 <MDL 2 2 <MDL <MDL
Conductivity umhos/cm 114 220 286 99 215 277 195 183
Hardness mg/L 51 88 119 43 87 109 74.35 79
Nitrate-Nitrite m /L <MDL 0.03 0.17 <MDL 0.011 0.14 <MOL <MOL
Oil and Grease m /L <MDL 8 8 <MDL 3 3 <MDL <MDL
pH su 7.0 7.8 8.2 7.6 8.0 8.4 7.9 7.9
Phosphate mg/L <MDL 0.7 7.6 <MDL 0.04 0.08 <MDL <MDL
ResidueFilterable-7DS mg/L 100 145 190 70 160 308 308 153
ResidueNOnFilterable-TSS m /L <MDL 11 48 <MDL 14 21 21 <MDL
SAR <MDL 0.43 0.85 0.26 0.67 1.00 0.42 1.00
Sulfate mg/L <MDL 8 20 <MDL 19 50 7 8.64
Aluminum mg/L <MDL 0.48 2.25 <MDL 0.31 1.17 0.37 <MDL
Arsenic mg/L <MDL 0.0001 0.0010 <MDL 0.0047 0.0150 0.007 0.015
Cadmium mg/L <MDL <MDL <MDL <MDL 0.01 0.01 <MDL 0.01
Calcium m 1L 14.2 25.2 31.8 12.2 24.4 30.0 19.8 21.7
Cop er m /L <MDL <MDL <MDL <MDL 0.002 0.002 0.002 0.001
Iron (Total) mg/L 0.08 0.63 1.85 0.04 0.35 1.05 0.24 0.04
Lead mg/L <MDL <MDL <MDL <MDL 0.0068 0.0400 0.04 <MDL
Ma nesium m /L 3.7 8.3 7.8 3.0 6.1 7.2 6.1 6.1
Manganese otal) m /L 0.005 0.017 0.035 0.007 0.015 0.037 0.018 0.010
Merwry mg/L <MDL <MDL <MDL <MDL 0.0002 0.0002 0.00021 000023
Molyebtlenum mg/L <MDL <MDL <MDL <MDL 0.01 0.01 <MDL 0.01
Selenium mg/L <MDL <MDL <MDL <MDL 0.0070 0.0180 0.003 0.018
Sodium mg/L 4.7 13.6 21.1 4.0 15.2 23.5 8.4 20.5
Zinc m /L <MDL 0.01 0.04 <MDL 0.01 0.01 <MDL <MDL
The Upper Hubbard C2ek monitoring point is located at a large cuNeR located at the mine entrance of the Blue Ribbon Mine.
Flow calculated by adding DTD upper and Hub /ow.
I •
Baseline Information for Point Hub-up is derivetl from events beginning on 9/30/96 through 4/1/02.
Point influenced by mining on 4/1/02.
Figure No. 118