2016-08-29_PERMIT FILE - C1981035A ‎(4)‎

• Permit No: C1981035A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 8/29/2016
• Doc Name: delete this
• Section_Exhibit Name: KI 2.05.6 Mitigation of the Impacts of Mining Operations
• Media Type: D
• Archive: Yes

PROTECTION OF HYDROLOGICAL BALANCE
Within the Probable Hydrologic Consequences section of this application
it was concluded that there would not be significant effects to the
hydrologic balance of the project site or adjacent areas. The lack of
significant groundwater and surface water resources in the immediate
and adjacent area precludes the potential for significant impacts from a
small underground mining operation.
Preventive and protective measures to be employed during and after the
mining operation include; isolation of the pre -mining surface water
drainages through re-routing and/or piping beneath or through the
disturbed area, collection and control of sediment and other constituents
from runoff at the disturbed area in a sediment pond, isolation of the
Hay Gulch irrigation ditch from disturbed area contamination through
berming and silt fencing (if necessary), watering of roadways and surface
areas to reduce ambient dust, and gravelling or hard surfacing roadways,
parking areas, washout areas, and other locations susceptible to
accumulation of sediments or materials.
Measures for the protection and control of surface and groundwater are
further detailed in the operations and reclamation plans.
PROBABLE HYDROLOGIC CONSEQUENCES
The "Cumulative Hydrologic Impact Assessment for Hay Gulch, La Plata
County Colorado, Revised October 2006" is included in this permit
package as Appendix 4(7). This document was prepared by Tom
Kaldenbach, Environmental Protection Specialist for the Colorado
Division of Minerals and Geology. Mr. Kaldenbach's assessment
concludes that "Neither the King Coal Mines nor the Blue Flame Mine is
expected to significantly degrade ground water quality or reduce ground
water supply; therefore, no cumulative impact to ground water is
predicted for Hay Gulch."
Norwest Corporation performed a geohydrology study of the King II mine
area (See Section 2.04.7 and Appendix 4(6)). This report corroborates
Mr. Kaldenbach's report of no significant hydrologic impacts.
TR -26 has been submitted to the Division to further address ground
water monitoring, springs 8v seeps and additional surface monitoring of
the Hay Gulch Ditch. Data obtained will be used to update the Probable
Hydrologic Consequences and the Cumulative Hydrologic Impact
Assessment of Hay Gulch and surrounding areas.
No significant hydrologic consequences of mining are anticipated. All
coal to be removed from the mine lies above the potentiometric surface of
Hay Gulch, the only known aquifer in the area. Therefore, there should
GCC Energy, LLC King II Mine
Section 2.05.6
Page 2 November 30, 2015 (TR -24 AR#2)