1986-12-11_PERMIT FILE - C1981017

• Permit No: C1981017
• IBM Index Class Name: Permit File
• Doc Date: 12/11/1986
• Doc Name: Permit Application Approval Package
• From: OSM
• To: Mid-Continent Resources, Inc
• Media Type: D
• Archive: No

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Other effects on ground water will be mixing of ground waters from previously
unconnected aquifers as a result of the proposed rock tunnel ; and degradation
of alluvial water from the coal processing waste pile and the rock tunnel
waste pile. Noner of these impacts are expected to cause material damage to
ground water uses in the Coal Basin area. For further discussion of impacts,
see Section VII of this document; Probable Cumulative Hydrologic Impacts.
Ground water quality and water levels are measured in the 12 alluvial wells
shown on Map IV-C-1 of the permit application and maps in the "Surface and
Ground Water Impacts, Sutey Property Disposal Site" of permit revision No. 1 .
Water levels in these wells are measured monthly and the water is sampled
quarterly. Ground water quality data collected from four of these wells are
presented in Appendix III-E-2, Figure III-E-2, and Table III-E-1 of the permit
application. An additional eight monitoring wells were completed and
monitoring commenced in October, 1982.
All observation wells will be monitored on a quarterly basis. Water levels
and samples will be taken. Water samples will be analyzed for the following
constituents:
pH Magnesium
Temperature Sulfate
Specific Conductivity Iron
Total Dissolved Solids Manganese
Bicarbonate Mercury
Calcium Potassium
The proposed operation is in compliance with the requirements of this section.
VII. Probable Hydrologic Consequences of Mining and Cumulative
y ro ogic impacts 5tudy - Rules an c)
This Cumulative Hydrologic Impact Study (CHIS) for the drainage basin of the
Roaring Fork River has been prepared by the Colorado Mined Land Reclamation
Division (CMLRD) pursuant to Rule 2.07.6(2)(c). This CHIS assesses the
probable cumulative hydrologic impacts of all anticipated coal mining
operations upon the general area of the Roaring Fork River Valley (Figure 2) .
Included in this assessment are all existing coal mines and those proposed
coal mines for which permit applications have been submitted to the Division.
This study has been prepared using information and analysis contained in the
Coal Basin mines permit application, information and analysis contained in
other permit applications of mines located in the general area and other
available information, including site visitation by members of the Division
staff. Coal mining operations in the study area include:
1. Garfield Energy Corp. - Sunlight Mine, CMLRD File No. C-046-81
2. Snowmass Coal Company - North Thompson Creek Mines, CMLRD File No.
C-025-81
3. Mid-Continent Resources, Inc. - Coal Basin Mines, CMLRD File No.
C-017-81