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2009-08-10_GENERAL DOCUMENTS - M1977300
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2009-08-10_GENERAL DOCUMENTS - M1977300
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Last modified
8/24/2016 3:49:32 PM
Creation date
8/13/2009 8:38:41 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977300
IBM Index Class Name
GENERAL DOCUMENTS
Doc Date
8/10/2009
Doc Name
EPP- SECTIONS 1 to Pg. 9-26
From
Whetstone Associates/Cotter Corp.
To
DRMS
Permit Index Doc Type
Gen. Correspondence
Email Name
DB2
Media Type
D
Archive
No
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Environmental Protection Plan, Schwartzwalder Mine <br />ii <br />(iii).2 Bedrock Permeability Tests ................................................................... 8-19 <br />(iii).3 Mine Inflow During Operations ............................................................. 8-20 <br />(iii).4 Mine Flooding After Operations ............................................................ 8-25 <br />(c) Description of Geologic Media ........................................................................................ 8-30 <br />(d) Identification of Fracture Systems ................................................................................... 8-30 <br />(e) Hydrogeologic Conceptual Model ................................................................................... 8-34 <br />(i) Hydrogeology of the Ralston Creek Alluvium and Fill ............................................. 8-34 <br />(ii) Hydrogeology of the Mine Unweathered Bedrock .................................................... 8-38 <br />9. GROUNDWATER QUALITY ............................................................................................................. 9-1 <br />(a) Existing and Potential Future Groundwater Uses .............................................................. 9-1 <br />(b) Groundwater Quality Data ............................................................................................... .. 9-1 <br />(i) Colorado Groundwater Quality Standards and Point of Compliance ........................ .. 9-1 <br />(ii) Water Quality in Alluvium ........................................................................................ .. 9-3 <br />(ii).I Alluvial Monitoring Wells ..................................................................... .. 9-3 <br />(ii).2 Sump Water Quality ............................................................................... 9-26 <br />(ii).3 Seep Water Quality ................................................................................ 9-26 <br />(ii).4 Domestic Well Water Quality ................................................................ 9-30 <br />(iii) Water Quality in Shallow Bedrock ............................................................................ 9-30 <br />(iv) Water Quality in the Underground Mine ................................................................... 9-33 <br />(iv).1 Evaluation of Changes in Mine Water Quality with Depth ................... 9-41 <br />(iv).2 Evaluation of Chemical Trends in Mine Water as a Function of Time. 9-43 <br />• (iv).3 Water Quality Data for Seepage into the Upper Mine Levels ............... 9-48 <br />(c) Analytical Suite and Detection Limits ............................................................................. 9-51 <br />10. SURFACE WATER CONTROL & CONTAINMENT FACILITIES ................................................10-1 <br />11. SURFACE WATER QUALITY DATA ............................................................................................. 11-2 <br />(a) Surface Water Quality Standards ..................................................................................... 11-2 <br />(i) Discharge Permit Limits ............................................................................................ 11-2 <br />(ii) Stream Standards ....................................................................................................... 11-3 <br />(b) Surface Water Quality Data .............................................................................................11-6 <br />(i) Previous Studies of Surface Water Quality ...............................................................11-6 <br />(ii) Surface Water Sampling Locations ...........................................................................11-6 <br />(c) Ralston Creek Water Quality ...........................................................................................11-8 <br />(i) Water Quality During Operation of the Sumps and WTP .........................................11-9 <br />(ii) Water Quality After Turning off the Sumps and WTP ............................................11-10 <br />(iii) Summary of Water Quality Impacts to Ralston Creek ............................................11-53 <br />12. WATER QUALITY MONITORING PLAN ...................................................................................... 12-1 <br />13. CLIMATE ............................................................................................................................................ 13-1 <br />14. GEOCHEMICAL DATA AND ANALYSIS ...................................................................................... 14-1 <br />is (a) Geochemical Characterization of Waste Rock and Fill ...................................................14-1 <br />(i) Whole Rock Analysis ................................................................................................ 14-1 <br />4109C.090807 Whetstone Associates 6
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