2019-09-18_PERMIT FILE - C1981035 ‎(5)‎

• Permit No: C1981035
• IBM Index Class Name: PERMIT FILE
• Doc Date: 9/18/2019
• Section_Exhibit Name: KI 2.05.6 Mitigation of the Impacts of Mining Operations
• Media Type: D
• Archive: No

2.05.6 - MITIGATION OF THE IMPACTS OF MINING OPERATIONS
AIR POLLUTION CONTROL PLAN
An Air Pollution Control Permit has been listed in section 2.03.10 and is
included as Appendix 2(2).
FISH AND WILDLIFE PLAN
Fish and Wildlife information is located in section 2.04.11 and also in
Appendix 6. A raptor protection plan is on file with the Colorado Division of
Reclamation, Mining 8s Safety. Section 2.05.4 details plants species to be included
for replanting during reclamation procedures.
PROTECTION OF HYDROLOGICAL BALANCE
Information required by 2.05.6(3) concerning protection of hydrological
balance is addressed in a report by Don May, P.E., which is included as Appendix
11(1). See also Maps King I-007, King I-007A, King I-007C, and Map King I-004.
PERMANENT CHANNEL DESIGN
In addition to the above mentioned report by Don May, P.E., a seed mix has
been determined which will provide a suitable cover for the designed channel
bottoms and sides. Composition and seeding rates of the seed mix are presented in
Table 1. The desirable qualities of this vegetation include characteristics of high
water tolerance, ability to withstand periodic inundation, sod-forming ability and
deep-rooting characteristics. Soils were evaluated, and, during the period of
vegetation establishment, should be able to resist erosion unless an event larger
than the 100 year, 24 hour peak flow occurs. Any reseeding and channel
maintenance necessary during the period of vegetation establishment is recognized.
The low cost and low maintenance benefits of the grassed waterway should result in
a functional and desirable permanent channel configuration. The runoff designs
and calculations used in determining peak flow for the channel design are provided
as Appendix 11(1) by Don R. May, P.E.. Appendix 11(1A) is a June, 2019 Revision 5
to Appendix 11(1) (including revised Figure 2) produced by Stoner Engineering and
Surveying for TR-27. Appendix 1 1(1 B) consists of SEDCAD hydrologic modelling
data for TR-27.
GCC Energy, LLC will monitor structures during the vegetation phase and
evaluate the need for any additional stabilization to ensure compliance with all
applicable regulations.
Table 1. Seed Mix for Grassed Waterway
Species #LB/PLS*/AC #Seeds/Ft2
Western Wheat ass 4.0 11.6
Streambank Wheat ass 2.0 7.4
Basin Wildrye 3.0 7.8
Reed Cana ass 0.5 5.8
Cicer Milkvetch 1.0 3.3
Total 10.5 35.9
GCC Energy, LLC King I Mine
Section 2.05.6
Page 1 September 10, 2019 (TR-27 AR-2)