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River and the north portion of the mine pit area where cottonwood seedlings will be <br />transported into those areas currently devoid of cottonwoods or willows. The density of <br />these plantings shall be based upon monitoring data collected in connection with #16 <br />above and shall be determined based upon the naturally occurring spacing between <br />mature cottonwood trees found in this area. Survival of these transplanted seedlings <br />will be reported to the Planning Administrator in the Annual Report. (This condition <br />applies to the Existing Pit only.) <br />19. Concurrent with the cottonwood tree monitoring plan described above, the <br />applicant shall submit a detailed irrigation plan for both cottonwood and wetlands areas <br />outside the mine area to be approved by the Planning Administrator, documenting the <br />methods, quantities and frequency of irrigation. Sub-surface irrigation may be required <br />if surface irrigation proves ineffective in maintaining cottonwood health & vigor. In <br />addition, the applicant's Stormwater Management Plan shall be modified with the <br />Colorado Department of Health; showing that this cottonwood treed area has been <br />modified to be an approved discharge point for this mine. (This condition applies to the <br />Existing Pit only.) <br />20. Permittee shall maintain a 50' undisturbed buffer from all jurisdictional wetlands <br />outside the mine boundary. Permittee is required to maintain existing wetlands <br />vegetation through irrigation or other means. The Planning Administrator may increase <br />the setback if required to maintain wetlands in premining condition. (This condition <br />applies to the Existing Pit only.) <br />21. A maximum of 1000 lineal feet of disturbed high wall is allowed at any time, <br />except as necessary to construct cutoff walls in advance of mining. All other high wall <br />areas shall have either permanent or temporary revegetation actively in progress. This <br />requires the placement of suitable soils and seeding. Irrigation will be required as <br />necessary to establish vegetation. (This condition applies to the Existing Pit only.) <br />22. A maximum of 1000 lineal feet of disturbed high wall is allowed at any time, <br />except as necessary to construct cutoff walls in advance of mining. All other high wall <br />areas shall have either permanent or temporary revegetation actively in progress. This <br />requires the placement of suitable soils and seeding. Irrigation will be required as <br />necessary to establish vegetation. (This condition applies to the Expansion Area only.) <br />23. All stockpiles and equipment, except for the truck scale, office trailers, toilet, <br />maintenance shed and scale house shall be located below the top of the pit highwall <br />dependent on the area available on the pit floor where the equipment is visually <br />screened. (This condition applies to the Existing Pit only.) <br />24. Topsoil and overburden stockpiles shall have a minimum of 3:1 slopes, and shall <br />be revegetated if left undisturbed for more than six months. <br />25. No berms or stockpiles associated with the perimeter drainage ditch located <br />outside the active mine area shall be permitted. (This condition applies to the Existing <br />Pit only.) <br />Air and Water Quality <br />26. All haul roads and disturbed sites shall be watered and/or chemically stabilized to <br />minimize dust. Watering operations shall be increased immediately in response to <br />periods of high wind. Environmental Health Director may require 'temporary closure of <br />facility if dust control measures are not effective. <br />Page 2009-299 <br />May 26, 2009 <br />Routt County Board of County Commissioners' Minutes