2016-08-10_PERMIT FILE - P2016021 (2)

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3.2.3. Drill Hole Plugging Procedures [43 CRF 3809.401 (b) (3) (i)j; Drill holes will be drilled using wireline coring methods and will average 1,000 feet deep. Exploration drill holes will be plugged in accordance with appropriate agency and State of Colorado guidelines as described in CRS 34.32.113. One drill hole may be open at a given time. A drill rig with appropriate support equipment will be used to plug the drill holes before the drill rig leaves the drill site. Successful drill hole plugging will mitigate any undue degradation of groundwater In the area and will not allow for the mixing of surface and subsurface waters [43 CRF3W9.401(b) (2) (Un. 3.2.4. Monitoring [43 CRF 3SM401 (b) (4)1; Post -closure management will commence on reclaimed areas following completion of the reclamation work for the area. Monitoring of revegetation success will be conducted annually for three years or until revegetation standards have been met. Revegetation monitoring will occur based on seasonal growth patterns, precipitation, and weather conditions. The drill sites would be considered stabilized when 70% of the pre - disturbance vegetative cover is re-established. No undue degradation of surface or groundwater waters, air quality or wildlife mortality is anticipated during the post -closure monitoring of the proposed areas. The work areas are located along ridgelines a significant distance of any surface stream channels or riparian, wetland areas. 3.2.5. Measures to be Taken During Extended Periods of Non -Operation Only those drill sites needed for future exploration will remain open. Interim stabilization measures, as described in Section 3.2.1, will be taken as necessary at these sites to prevent undue erosion and to abate any noxious weed growth [43 CRF3809.401(b) (5) (i)]. No toxic or deleterious materials will be stored on BLM lands during periods of extend non - operations [43 CRF 3809.401(b) (5) (li)]. No equipment, supplies or structures will be stored on BLM lands during periods of extend non - operations [43 CRF 3809.401 (b) (5) (lir)]. The BLM lands in the project area will be maintained in a safe and clean condition during periods of extended non -operations 143 CRF3809.401(b) (5) (iv)]. The project area has limited access, but lands are used by recreationists throughout the year for hiking, fishing, big and small game hunting, horseback riding, and 4x4 and ORV activities which the permittee has no control over. During periods of extended non -operations the project will be surveyed on an annual basis during revegetation and weed monitoring/abatement monitoring. All work areas will be inspected for undue erosion and mitigation of any identified areas of concern will be initiated [43 CRF 3809.401(b) (5) (v)]• Anticipated periods on non -operations and no access to the work areas would be from January 1s` through April 15'" of every year due to winter weather conditions and snow accumulations [43 CRF 3809.401 (b) (5) (W)].