2020-08-07_REVISION - M1980244 (3)

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NEWMONT GOLDCORP along the centerline of the road. Haul roads constructed for surface mining areas and the VLFs, where 240-ton trucks are used, are approximately 120 feet wide, and each lane is approximately 45 feet wide. Haul road berms will contain openings, sized as necessary, to allow stormwater runoff from to flow from the road surface to ditches and other stormwater management features. The haul road alignments may follow the topographic ridges or run along or across contours on hillsides. Bedrock is at or near ground surface in mine areas; therefore, site preparation will generally include growth medium removal and storage and limited cut-and-fill grading. Subgrade preparation for haul road fill placement will be minimal, except as required in specific instances such as culvert locations. In general, soils will be removed along the haul road alignment to expose a competent, stable subgrade material. Where soil layers are sufficiently thick (e.g., greater than six inches over a greater than one-acre area)and accessible(i.e., mechanical means can be easily used to remove), the soil material will be salvaged and stored for use in reclamation. Overburden material may be used for road fill as well as local materials derived from the cut. Fill slopes for the haul roads generally will be constructed at the angle-of-repose of the fill material. In areas of culvert installations, fill placement will be conducted in a manner that maintains the integrity and function of the culvert. During operations, haul road dust will be suppressed using the current methodologies. CC&V is using water for dust suppression on temporary roads and may use magnesium chloride or other suitable dust suppressants for more permanent or established roads. Water used in dust control will be supplied from the established water supply sources, unless another supply becomes available. Haul road stormwater and sediment control will be managed using diversion berms, drainage ditches, culverts, flow-velocity controls, and barriers to sediment movement, including interim re- vegetation. Prior to release to drainages, stormwater runoff will be routed via ditches through sediment control devices consistent with applicable best management practices (BMPs) such as silt fences, rock check dams, and other effective measures. After such temporary detention, stormwater runoff will be allowed to continue down gradient. Flow velocity reduction measures will be employed along channels, as necessary,to minimize erosion. These measures will include, but will not be limited to, vegetative strips, riprap, check dams, geotextile, and use of vegetative debris. These features will be reviewed and maintained as part of the site Stormwater Management Plan, which is provided in Appendix 3. Additional details about stormwater management are provided in Exhibit G. Cripple Creek&Victor Gold Mining Company Exhibit D Cresson Project Amendment 13 18