REP38125

• Permit No: C1996083
• IBM Index Class Name: Report
• Doc Date: 4/27/2005
• Doc Name: 2004 AHR Part 2
• Annual Report Year: 2004
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Bowie Resources, LLC Surface Water
Bowie No. 2 Mine
2004 Annual Hydrology Report HUB-low
Hubbartl Creek -Drainage System
Elevation - 5880
IniBated 9130/1996 9/3011996 9130/1996 9130/1996
Activated 6/23/1999 6/23/1999 6Y1311999 6/23/1999
Date 11/1712004 9128/2004 6/2512004 3!19/2004
Summary Infannation

Baseline Operation
UNITS Min Ave Max Min Ave Max
Flow CFS 2.90 19.67 85.51 0.06 15.44 151.41 5 12 0.39 20
FieldComment
ph su 8.0 8.5 9.3 7.1 8.2 9.0 8.5 6.3 8.6 8.2
Conducfivi umhos/an 80 198 390 100 346 850 160 120 370 140
Temperature Celsius 2.3 11.1 20.2 0.3 10.5 19.7 5.3 12.2 16.5 7.6
DO mglL 6.4 8.2 10.0 0.0 6.1 11.4 9.6 9.2 8.9 9.7
UNITS
Bicarbonate mg/L 62 115 155 92 221 690 92 175
Chbdde mg/L <MDL 2 3 '2 4 7 2 4
Conductivity umhos/an 118 254 406 198 400 609 198 387
Hardness mglL 49 96 138 88 161 251 88 152
Nibate-Nibd[e mg/L <MDL 0.05 0.29 <MDL 0.29 1.62 <MDL 0.04
Oil and Grease mglL <MDL 3.0 3.0 <MDL 3.0 3.0 <MDL <MDL
pH su 7.5 7.9 8.3 7.8 8.0 8.2 8.2 8.2
Phosphate mglL <MDL 0.004 0.030 <MDL 0.01 0.03 0.03 0.03
ResidueFltterable-TOS mglL 100 163 260 130 251 380 130 250
ResidueNonFitterablaTS m <MDL 33 170 <MDL 3 6 <MDL <MDL
SAR <MDL 0.47 1.04 <MDL 0.88 1.18 0.58 1.11
Sulfate mglL <MDL 17 50 30 57 100 <MDL 40
Aluminum m 0.05 0.58 1.91 <MDL 0.08 0.41 0.13 0.05
Arsenic mglL <MDL 0.0004 0.0010 <MDL 0.0003 0.0010 <MDL 0.0006
Cadmium mglL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL
Caldum mglL 13.8 26.2 36.7 24.7 43.2 70.7 24.7 39.8
Copper m <MDL 0.001 0.010 <MOL <MDL <MDL <MDL <MDL
Iron (Total) mglL 0.09 0.54 1.44 0.06 0.18 0.49 0.38 0.07
Lead m <MDL <MDL <MDL <MDL 0.0001 0.0003 0.0001 0.0001
Ma nesium mglL 3.6 7.4 11.2 6.3 13.5 21.8 6.3 12.8
Ma nose Total) mglL 0.009 0.016 0.034 0.005 0.014 0.041 0.01 0.016
Mercury mglL <MDL <MDL <MDL <MDL <MOL <MDL cMDI <MDL
Mo bdenum mglL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL
Selenium mglL <MDL 0.001 0.010 <MOL 0.0000 0.0001 <MDL 0.0001
Sodium mg/L 5.3 15.9 27.6 12.4 28.7 48.5 12.4 31.1
21nC mglL <MDL 0.01 0.04 <MDL cMDL <MDL <MDL <MDL
The LowerNubbartf Cmek monitoring polo! is boated at a concrete box culvert under the Union Pacific railroad back just above the North
Fwlc of the Gunnison. Flow values are taken from the USGS information for station #09132960.
Baseline Information for Point Hub-low is dedvetl from events beginning on 9/30/96 through 6/23/99.
Point in9uenced by mining on 6/23/99. F19UfE NO. 115