2010-08-02_REVISION - M1977300 ‎(43)‎

• Permit No: M1977300
• IBM Index Class Name: REVISION
• Doc Date: 8/2/2010
• Doc Name: New Amend- EPP- Cover & Table of Contents
• From: Cotter Corp
• To: DRMS
• Type & Sequence: AM2
• Media Type: D
• Archive: No

Environmental Protection Plan, Schwartzwalder Mine vi
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Figure 9-5. Piper Diagram Showing Major Ion Composition of Water in Flooded Mine ........................ 9-39
Figure 9-6. Depth Profiles for Temperature, pH, ORP, and E.C. in Mine Water, Nov 12, 2007 ............. 9-42
Figure 9-7. Time Concentration Plots for Solution Parameters (pH, ORP, TDS) in Mine Water ............ 9-44
Figure 9-8. Time Concentration Plots for Major Anions (HCO3, SO4, and Cl) in Mine Water ................ 9-45
Figure 9-9. Time Concentration Plots for Major Cations (Ca, Mg, Na, K) in Mine Water ......................9-46
Figure 9-10. Time Concentration Plots for Metals (Fe, Mn) in Mine Water ............................................ 9-47
Figure 9-11. Time Concentration Plots for Trace Metals (U, Mo) in Mine Water ................................... 9-48
Figure 9-12. Linear Regression of Recent Uranium Concentrations (June 2007 - June 2010) ................ 9-49
Figure 9-13. Linear Regression of Recent Uranium Concentrations Projected to Background (9 Years) 9-49
Figure 9-14. Piper Diagram Showing Major Ion Composition of Seepage into the Upper Mine Levels. 9-51
Figure 11-1. Change in TDS, Sulfate, Specific Conductance, Alkalinity, and pH in with Location in
Ralston Creek, December 1998 ...........................................................................................11-12
Figure 11-2. Seasonal Variation in TDS Components in Ralston Creek ................................................11-13
Figure 11-3. Piper Diagram Showing Major Ion Composition of Ralston Creek Samples ....................11-14
Figure 11-4. Trends in Major Ion Concentrations at Station SW-BPL, 1998 - 2010 .............................. 11-15
Figure 11-5. Correlation of Uranium, Sulfate, Bicarbonate, and TDS Concentrations at SW-BPL....... 11-16
Figure 11-6. Trends in Uranium Concentrations at Stations SW-AWD, SW-A001, SW-BPL, SW-FBRG,
S W-ARH, and S W-LLHG ................................................................................................... 11-17
Figure 11-7. Uranium Concentrations in Ralston Creek at Upstream Stations SW-AWD and SW-A001,
1990 - June 2010 .................................................................................................................11-18
Figure 11-8. Uranium Concentrations in Ralston Creek at Downstream Stations SW-BPL and SW-FBRG,
1990 - June 2010 .................................................................................................................11-19
Figure 11-9. Uranium Concentrations in Ralston Creek at Downstream Stations SW-ARH and SW-LLHG,
1990 - June 2010 .................................................................................................................11-20
Figure 14-1. Comparison of TDS and Uranium Concentrations in Ralston Creek, Upstream and
Downstream of Waste Rock Dumps .....................................................................................14-4
Figure 15-1. 50-gpm Water Ion Exchange Treatment System ..................................................................15-5
Figure 15-2. Schematic of 100-gpm Ion Exchange Water Treatment System ..........................................15-6
Figure 15-3. Preliminary Location Considered for Funnel-and-Gate PRB System ................................15-12
Figure 15-4. Proposed Wetland Area ......................................................................................................15-15
Figure 15-5. Proposed Locations for Bedrock Monitoring Wells ...........................................................15-17
Figure 15-6. Cross Section N52°W Through Schwartz Trend showing Proposed Locations for Bedrock
Monitoring Wells ................................................................................................................ 15-18
Figure 17-1. Soil Types in Vicinity of Schwartzwalder Mine ..................................................................17-4
4109C.100731 Whetstone Associates 6