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WAMNER <br />Construction, Inc. <br />1850 E. I". Street, Craig, CO 81625 <br />Phone & Fax (970) 824-2709 <br />WagnerCorpq.com <br />EXHIBIT D (6.4.4) — Mining Plan <br />Wagner Construction Inc. (operators) will adhere to the same mining plan offered under <br />the 110 Permit M-99-018 with expansion revision noted below in Subsection H. <br />a) Mining will commence upon approval of this permit. and end when necessary <br />excavation has been completed and the requirements for agricultural <br />improvements by land owner are satisfied. <br />Open pit mining will result in approximately 928 linear feet of 2 to 1 north facing <br />slopes. The pit floor will be graded to drain with exposed aggregate. The north pit <br />boundary will be day lighted without slope. <br />b) Mining Management — excavators, crushers, dozers, loaders, dump trucks <br />Present topsoil depth in this rock area is approximately six (6) inches in depth and <br />is suitable as a plant growth medium. The topsoil will be salvaged for use in the <br />landscaping, backfilling and structural fill process. Topsoil from the mine <br />excavation will be stockpiled for reclamation activities and stored at the highest <br />point along the perimeter of the excavation. Topsoil piles will be sloped to a 2 to <br />1 angle and revegetated with a pasture land seed mix called premium pasture mix <br />as available locally and in accordance with DRM&S specifications 20.0 <br />REVEGETATION. Topsoil removal will run concurrent with mining efforts. <br />Limited areas will be stripped upon need. Seed bed preparation consisting of <br />discing to eliminate compacted conditions, drill seeding and fertilizing of topsoil <br />will be conducted annually as mining operations progress. <br />a. Top Soil Management — excavators, dump trucks, Ioaders <br />The depth of the excavation of deposit will not exceed 60 (sixty) feet without <br />technical revision. <br />c) Dry pit mining methods are used for extraction. No water will be used for mining. <br />The excavation site is located at the highest point of a rock ledge and is <br />considered a dry basalt operation at an expected depth of sixty (60) feet. Site <br />surveys and existing excavations do not indicate the presence of ground water <br />within the permit boundaries. No runoff, impoundment, or groundwater can affect <br />the excavation or affect the hydrologic balance, pre or post mine. Measures will <br />be taken to minimize disturbance to the hydrologic balance <br />d) Permit area is being increased to 27.91 acres to provide additional acreage for <br />material stockpiling, equipment storage, as well as accommodate future phases. <br />e) Future phase mining is not anticipated to increase to more than 10 acres over a 20 <br />year period. Mining operations over the last 16 years have resulted in the <br />excavation of four (4) acres with a maximum .25 acre per year pit growth. Current <br />