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Exhibit D- Mining Plan <br /> The FEMA designated flood plain was severed in 1911 with the construction of the <br /> Union Pacific railroad bed located approximately 1 mile to the west. While found <br /> within and along the terminus of the upper terrace of the historic floodplain of St. <br /> Vrain Creek, operations will not impact the active FEMA designated floodplain. <br /> The general direction of extraction activities over the Tracts is from north to south, <br /> as shown on Exhibit C-2 — Extraction Plan Map. No extraction will occur within <br /> 125 feet of a residential structure, or ten feet of any other structure, property <br /> boundary, right-of-way, or easement without written agreement with the owner of <br /> said structure. These setbacks supersede any representation of the extraction limits <br /> shown on Exhibit C-2: Extraction Plan Map. <br /> Extraction activities will be limited to within 25.0± feet of well heads and <br /> facilities, and those same wellheads will be backfilled to create a 100± foot radius <br /> around the well head for future oil and gas activities at that well head. The fill <br /> around well heads will occur concurrently with extraction around the well head <br /> and facilities, to the extent practical. At all times, safety will take precedent and <br /> over-ride as necessary any element of the permit to assure protection of life and <br /> property and compliance with federal safety regulations (MSHA). Changes <br /> resulting from a safety consideration that require a modification of the approved <br /> permit will be made after the fact respective of amendment or technical revision <br /> provisions of the Office of Mined Land Reclamation (OMLR). <br /> Initially, heavy equipment (typically, scrapers, dozers, or excavators operating <br /> alone or in combination) will extract soil, placing it along the basin perimeter in <br /> the construction of up to a five (5.0±) foot high visual berm. The berm may vary <br /> in height and width. Outslopes of the berm will be 3H:1V or flatter to aid <br /> establishment of grasses and utilizing the approved seed mixture. Where necessary <br /> to aid in access along the perimeter of the pit or completed reservoir, the berms <br /> may be increased in width to better facilitate the access of vehicles or heavy <br /> equipment. The height and width of the berm will be field fit at the time of <br /> placement and will not go beyond permit limits. While the berm width will vary, <br /> they will fit within the ten (10.0±) foot buffer between the permit boundary and <br /> any planned extraction; and where wider, will extend into the basin area <br /> conforming to 3H:1 V minimum outslopes. To the extent possible, the height of <br /> berms will near five (5.0±) feet along the perimeter where a residential structure is <br /> within 125.0± feet from active extraction operations. Soils volumes extracted in <br /> excess of that needed for reclamation may be temporarily stockpiled as part of the <br /> berms, elsewhere on-site, or conveyed to nearby Kurtz or Heintzelman Projects, <br /> Varra Companies, Inc. OMLR 112 Permit Application 4 <br /> Parcel 122—Resource Development Project 20 April 2017 <br />