2017-11-08_REVISION - M1983139 - Laserfiche WebLink

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EXHIBIT E — RECLAMATION PLAN The changes in the reclamation plan reflect the original permit application. Relevant information regarding Exhibit E — Reclamation Plan, is discussed within the first adequacy review (8/30/1983) and the second adequacy review (1/17/1983). These documents and the corresponding responses are considered for this application amendment. The following changes are proposed in order to continue to adhere to the Division of Reclamation Mining and Safety's guidelines and finalize a close out of the mine permit. Throughout the site there are land irregularities left from mining which have slopes greater than those required for rangeland. Approximately 7 acres of land throughout the permit boundary will be regraded to a 3H:1V slope. These slopes will meet the standard requirement for rangeland land use. Part of the regarding will take place around various Xcel Energy power poles. During the mining time period, the Xcel Energy power poles were turned into islands due to excavation around the poles. There was no original structure agreement, which was cited in the May 2017 Inspection Report. Xcel is aware of the proposed reclamation grading efforts and has formally approved the work. Refer to Exhibit S. There are several small detention dams that do not store water but have historically served as flood attenuation to residential properties located east of the permit. There is some minor grading work on slopes that will be done, but the majority of the lands in these pond boundaries is fully vegetated and will not be disturbed. Within the inspection report, the noted areas which needed regrading include: • The northeastern portion of the permit area (location of three ponds). • Large stock piles just west of ponds listed above. • Three sediment ponds immediately east of the office space. • Minor areas of grading along the access road located in the southern portion of the site. There is approximately 160 acres within the pioneer parcel boundary which will need to be seeded. The approved seed mixture and method will not be altered. The most recent discussed seed mixture to be used is Buffalo Brand Sharp's Dryland Pasture Mix. This item is proposed in Technical Revision 3 dated April 28, 2015. The ponds located on the eastern portion of the site have been determined to be non jurisdictional by the U.S. Army Corps of Engineers. To be in compliance with the DRMS, the ponds will be backfilled to at least two feet above the groundwater surface. Existing stock piles on the site will be used to fill the piles. All woody vegetation in the pond areas will be removed and offered to Pioneer Sand Gravel Company, Inc to create mulch. Once complete, the grade will conform to the original natural drainage pattern and if needed, any grade control structures will be put in place. The Pioneer retail sales yard consists of roughly 20 acres. The most recent lease (dated 05/19/2014), between the City of Arvada and Pioneer Sand Company, Inc. states that the sales yard, office and parking area will expire on October 31, 2023. In order to finalize reclamation, a formal request of change is land use is desired. The 20 acre piece will be designated as commercial / industrial in order for the 10 year lease to continue. No further reclamation activities are planned for the Commercial area. Within the 2013 lease, Exhibit H describes the 'Facilities to Remain on the Leased Property at the End of the Lease' and can be used as reference for an end of lease agenda. The reclamation plan map (Exhibit F) shows the sales yard and roadway to remain.