2014-07-11_REPORT - C1980007

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 7/11/2014
• From: Hydro Geo, Inc
• To: DRMS
• Annual Report Year: 2013
• Permit Index Doc Type: Hydrology Report
• Email Name: JRS
• Email Name: DIH
• Media Type: D
• Archive: No

West Elk Mine 2013 Annual Hydrology Report v
LIST OF FIGURES
Figure 1.
Monthly Precipitation Data for Paonia 1 SW ( 56306) .......... ..............................3
Figure 2.
Monthly Precipitation Data for McClure Pass (59743) ........ ..............................3
Summary of the Groundwater Monitoring Well Characteristics ......................33
Figure 3.
Monthly Precipitation Data for Overland Reservoir (59853) .............................4
Summary of the Groundwater Monitoring Program ............ .............................34
Figure 4.
Monthly Snow Water Equivalent Data for Overland Reservoir .........................5
Summary of the Underdrain and Mine Inflow Monitoring Program ................35
Figure 5.
Monthly Snow Water Equivalent Data for McClure Pass .... ..............................5
Summary of the U.S. Forest Service Water Resources ........ .............................36
Figure 6.
Average Daily Flow Data for the North Fork of the Gunnison River near
Summary of CDPS Limits for Outfall 007 .......................... .............................43
Somerset, CO (USGS 09132500) ......................................... ..............................6
Summary of CDPS Discharge Permit Limits for Sedimentation Ponds' ..........
Figure 7.
Average Daily Stream Flow Data for Minnesota Creek near Paonia, CO
Summary of CDPS Discharges for Water Year 2013 (Adapted from WY
(USGS 09134000) ................................................................. ..............................8
2013 DMRs) ......................................................................... .............................45
Figure 8.
Temperature Data Logger Monitoring Site Locations ......... .............................21
Summary of Salinity Loading in the North Fork of the Gunnison River ..........
Figure 9.
Mine Water Balance ............................................................. .............................40
LIST OF TABLES
Table 1. Baseline and Routine Monitoring Frequencies .................... .............................11
Table 2. Laboratory Parameters for First 5 Years of Monitoring (including Baseline).. 12
Table 3. Summary of the Surface Water Monitoring Program .......... .............................14
Table 4. Summary of the Temperature Monitoring Site Details ........ .............................20
Table 5.
Summary of the Spring and Seep Monitoring Program ....... .............................24
Table 6.
Summary of the Groundwater Monitoring Well Characteristics ......................33
Table 7.
Summary of the Groundwater Monitoring Program ............ .............................34
Table 8.
Summary of the Underdrain and Mine Inflow Monitoring Program ................35
Table 9.
Summary of the U.S. Forest Service Water Resources ........ .............................36
Table 10.
Summary of CDPS Limits for Outfall 007 .......................... .............................43
Table 11.
Summary of CDPS Discharge Permit Limits for Sedimentation Ponds' ..........
44
Table 12.
Summary of CDPS Discharges for Water Year 2013 (Adapted from WY
2013 DMRs) ......................................................................... .............................45
Table 13.
Summary of Salinity Loading in the North Fork of the Gunnison River ..........
51
June 2014 HydroGeo, Inc.