2021-08-19_PERMIT FILE - M2021052

Home Browse Search

R;fle ;ravel Pit #1 6.1.1.3 Groundwater—Specific Requirements • The Rifle Pit mining operations will be dewatering groundwater and discharging it to the Colorado River. • The CDPHE is in the process of updating their dewatering permits. Scott Contracting Inc. will coordinate with CDPHE Permitting staff regarding the applicable permit for these operations and submit water quality samples prior to obtaining coverage. • Scott Contracting, Inc. will meet the permit limits which will be protective of the Colorado River's water quality standards, as determined by the CDPHE. • Scott Contracting, Inc. will not be discharging to groundwater and be held to surface water discharge water quality standards. • Scott Contracting, Inc. will not discharge water until they have received a permit certification from CDPHE allowing the activity. • Scott Contracting, Inc. will not have an in-situ leach mining operation. • Scott Contracting, Inc. has installed piezometers to monitor the groundwater levels on the parcel and can provide that data upon request. See Figure 14 for the approximate locations of the dewatering wells. See Section 8 Exhibit G for more information regarding water. 6.1.1.4 Wildlife All aspects of the Rifle Pit mining and reclamation plan consider the safety and protection of wildlife on the mine site, at processing sites, and along all access roads to the mine site with special attention given to critical periods in the life cycle of those species which require special consideration. See Section 9 Exhibit H for more information regarding wildlife and habitat management. 6.1.1.6 Topsoiling Topsoil will be removed and segregated from other spoil as part of the Rifle Pit mining and consider the following management practices and standards: • Vegetative cover will be applied to avoid deterioration of the topsoil, protect it from wind and water erosion, and keep it free of any contamination by toxic or acid- forming material so it can be used for reclamation. • Woody vegetation at the site will be remove from or appropriately incorporated into the existing topsoil prior to excavation within the Affected Areas. • Scott Contracting, Inc. will try to ensure that existing vegetation is put to a beneficial use such as firewood, mulching, lumber, etc. • Topsoil piles will be stored in a location and in a configuration to avoid erosion and interaction with the mining activities. The topsoil stockpile areas are depicted in Exhibit D3 and D4, Figures 12 and 13. • The topsoil stockpiles will be rehandled as little as possible until replacement on the regraded, disturbed area. Scott Contracting, Inc. will obtain proper approval from the Board or Office prior to relocating topsoil stockpiles. • Measures will be taken to assure the stability of replaced topsoil on graded slopes by roughing in final grade to eliminate slippage zones. • When growing media is replaced, it will be done in as even a manner as possible. Fertilizer or other soil amendments shall be added, if needed, although not anticipated. 32