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-; Per Rule 6.5, a Geotechnical Stability Exhibit demonstrating the appropriateness of these setbacks is included with this permit application, but per comments of the DMG written agreements with PSCo. and Sinclair Pipeline, or a revised Stability Analysis acceptable to the DMG proposing lesser setbacks, will determine setbacks from the PSCo. towers and the Sinclair Pipeline. Item #7 - Sorenson's comments The only present uses on the property are range land for cattle on the portions of the property west of the S. Platte River, and an area of the plant site presently used for mobile home storage. No structures exist on any of the property except for fencing and isolated farm structures on the portions ofthe property west ofthe River. There are extensive tree stands along the River and on portions of Pazcel A. A Division of Wildlife (DOW) questionnaire was completed, and no endangered or critical wildlife habitat was identified. Surveys for the Ute Ladies tresses orchid and the Prebles meadow jumping mouse were also conducted, and neither were found to be present. It is expected that jurisdictional wetlands on portions of Parcel B, Pazcel C, and perhaps Parcel A will be identified, and a permit from the Army Corp of Engineers to create replacement wetlands will be necessary to remove all or portions of any identified wetland areas. A wetland delineation is being prepared by another consultant, who will also process the necessary permit to remove any existing wetlands and provide for wetland's replacement, and prior to excavation of any jurisdictional wetlands requiring a 404 permit for excavation and filling, the appropriate 404 permit will be obtained from the Corp of Engineers. Item #12 and 25 All of the property east and most of the property west of the S. Platte River are within the 100 year floodplain of the River. No mining shall occur within 400' of the low flow channel of the S. Platte River without approval of the Urban Drainage and Flood Control District (UD&FCD), and all activities within the 100 year floodplain of the S. Platte River shall require a Flood Plain Use Permit from Adams County. Any stockpiles of topsoil and overburden in the floodplain, and particularly in the floodway area, will be placed in accordance with approvals of the UD&FCD and the Floodplain Use Permit. General proposed standards for the placement of stockpiles in any floodplain area have been included in Exhibit G. A conveyor will also be constructed across the S. Platte River from the west portion of the property (D parcels) to the plant site (C parcels), and UD&FCD approval and a Floodplain Use permit from Adams County for the conveyor's support structures in the S. Platte River floodplain area will also be obtained. The site contains approximately 1+ feet of topsoil and overburden overlying 30± feet of alluvium sand and gravel material underlain by clay shale and/or claystone bedrock, which acts as a natural barrier between the alluvium aquifer and the deeper bedrock aquifers. A slurry wall will be installed around the perimeter of the D parcels to limit groundwater infiltration for dry mining and a future sealed storage water facility for reclamation. 2