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Exhibit D- Mining Plan <br />Any method that accelerates the operation timetable will be utilized, depending <br />upon market conditions and the capacities of the operator. To this end, an existing <br />conveyor system is established in the northeast corner of Tract A. Extracted <br />resource may be conveyed to or from other Varra Companies, Inc. off-site plant <br />facilities. One conveyor system and route is already established on the northwest <br />corner of the permit area and will convey materials to or from the Kurtz operation <br />to the North. A second conveyor route may be established (subsequent to an <br />approved OMLR technical revision) along the west permit boundary to facilitate <br />movement of materials to and from the adjacent Heintzelman operation. Processed <br />and unprocessed or otherwise Colorado Department of Health compliant inert <br />materials may originate from different sources and locations for import and <br />utilization for our on-site processing, commercial, or reclamation interests; either <br />as product in its unaltered state, or as otherwise processed, recycled, or repurposed <br />from on-site processing and operations. All inert materials may arrive via <br />conveyor or overland haulage. <br />While initial operations will commence on the north boundary of Tract A, both <br />Tracts A and B may be extracted concurrently. All extraction will proceed in a <br />manner to minimize visual and audible impacts to adjacent lands and properties. <br />In Tracts A or B, extraction will commence to facilitate removal of material from a <br />nearby residence and County Road 28 to better distance those locations from <br />operations over time; and to gain time to vacate or relocate any utilities, oil and gas <br />lines, or other structures from the interior of the tracts as needed, and in <br />cooperation with the owners or other responsible parties. <br />Extraction activities will remove aggregate to a weighted average depth of 39.0± <br />feet from the surface. Anomalous depths greater than 50.0± feet may occur. <br />While extracted slopes may be temporarily 1.25H:1 V, all final basin (reservoir) <br />slopes will be established concurrently with extraction and will conform to Rule <br />3.1.5(7), or flatter (refer to Exhibit S — Stability Analysis). <br />Initially a 1600± foot extraction front will advance along its east -west orientation <br />from the northern extraction limit toward the southern permit boundary. The <br />advancing front will be comprised of side slopes nearly 400 linear feet at 1.25H:1 V <br />along each side of an 800 foot advancing wall. Concurrent reclamation will trail <br />this front by approximately 400 foot increments. This front is approximate for all <br />active Tracts. As the basin floor and perimeter boundary is reached, final grading <br />may commence once a minimum area of approximately four acres (or a distance of <br />Varra Companies, Inc. OMLR 112 Permit Application 5 <br />Parcel 122 — Resource Development Project 1 July 2015