2023-01-09_REVISION - M2021052 (10)

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R; le G1avel t iY #1 6.1.1.1 Materials Handling Scott will set forth the following materials handling measures: • Grading will create a final topography appropriate to the final land use selected in the Reclamation Plan, which is a pond surrounded by a wetland fringe and a perimeter berm vegetated with upland herbaceous species. • All grading will be done in a manner to control erosion and siltation of the Affected Lands, and to protect areas outside the Affected Lands from sedimentation derived from the Affected Lands. • Reclamation of the perimeter berm and the fringe of the pond will proceed concurrently with the mining process. Reclamation of the operating area shall be completed as soon as feasible after the mining process concludes. • All refuse and acid-forming or toxin-producing materials, if found, will be handled and disposed of in a manner that will control unsightliness and protect the pond from pollution. No such materials are expected to be encountered. • Any drill or auger holes that are part of the mining operation will be plugged with non- combustible material. There will not be any adits nor shafts at this location. • The maximum slopes are depicted on Figure 11, Exhibit C6. This detail depicts a 5:1 slope for the upper portion of the reclaimed pond and was informed by the CPW staff due to its potential use by wildlife, as well as Garfield County LUC standards (LUC Section 7-1002.H.2). • No inert structural fill generated outside of the approved permit area will be backfilled into the mining pit. • All mined material that will be disposed of within the Affected Lands will be handled in such a manner so as to prevent any unauthorized release of pollutants to the surface drainage system. • No unauthorized release of pollutants to groundwater shall occur from any materials mined, handled or disposed of within the Affected Lands. 6.1.1.2 Water—General Requirements Scott will minimize disturbances, to the extent practicable, to the prevailing hydrologic balance of the Affected Lands and of the surrounding area and to the quantity or quality of water in surface and groundwater systems both during and after the mining operation and during reclamation by: • Complying with applicable Colorado water laws and regulations governing injury to existing water rights. • Compliance with applicable federal and Colorado water quality laws and regulations, including statewide water quality standards and site-specific classifications and standards adopted by the Water Quality Control Commission. • Compliance with applicable federal and Colorado dredge and fill requirements. • Removing temporary or large siltation structures from drainage ways after disturbed areas are revegetated and stabilized, as required by the Reclamation Plan. 38