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<br />Mining Phase <br />ear or Activity De cription of Minine and Other Disturbance Activities <br />Mining <br />Phase 1B Phase 1B mines 25± acres of Parcel B. Approximately 4± acres of this parcel, <br />within the low Dow channel of the S. Platte River, will be left undisturbed, <br />except for any channel improvements required by UD&FCD and any <br />disturbance for support structures for the conveyor. The mining proposed on <br />this parcel is expected to be completed within the 1" year, and will create <br />approximately 25+_ acres of temporary lake area. The 25± acres does include <br />some area within 400' of the S. Platte River channel. As mining within 400' of <br />the S. Platte River channel requires approval by UD&FCD and agreement on <br />what S. Platte River channel improvements should be installed as a condition <br />ofapproval, no mining will occur without such approval and agreement. This <br />400' area is shown on Exhibit C-2, Mining Plan Map. <br />Mining will involve the excavation and storage of 6-12"± of topsoil, <br />excavation and storage of overburden material, and the excavation of <br />aggregate material and export to Parcel C for processing. This mining will <br />also be part of 1" Phase of mining. The proposed mining setbacks are: 50' <br />from any of the three PSCo. towers, 35' from the top of existing old berm <br />along the east side of the S. Platte River, 50' from the west outside top bank <br />of the Fulton Ditch, and 35' from the nearest non-pressurized water discharge <br />pipeline in the southwest corner of the property. The Easement Detail on <br />Exhibit C-2, Mining Plan Map shows the location of the easement for this <br />pipeline and the other two pipelines in this area. Prior to excavation being <br />undertaken, this pipeline will be located in the field to insure this excavation <br />setback is followed. Once again, the last setback would also mean that the <br />closest mining would be 85'± to any of the PSCo. tower structures and much <br />more than 35' to a proposed second non-pressurized water pipeline and the <br />existing Sinclair gasoline pipeline. <br />Installation of <br />Conveyor- At the same time Phase lA and 1B are being excavated another activity that <br />is expected to take place the 1" year is the installation of the conveyor across <br />the S. Platte River. The conveyor will need a minimum of two support <br />structures in the otherwise undisturbed S. Platte River channel area. Approval <br />of UD&FCD and a Floodplain Use permit will be obtained for construction <br />of these support structures. <br />4 <br />