2015-01-12_REVISION - M1985112 (7)

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EXHIBIT D MINE PLAN The Loloff Pit is an operational sand and gravel mine,with this application being for the expansion of the existing mine boundaries to include approximately five (5)acres of additional mining area. The site is approximately 54 acres with 42.7 acres currently permitted under Permit M-1985-112 on file with the Colorado Division of Reclamation Mining&Safety. Exhibit C shows the current permitted mining area and Exhibit D shows the proposed areas to be affected under the amendment to the permit. The affected areas include Area 1 in the northeast corner of the property that was identified as a shop and storage area in the original permit application. The property ownership changed hands over the last year and it is the new owners desire to mine this area as it contains approximately 450,000 tons of material with an average depth of 45 feet in the northeast corner. The other area where the modified permit boundaries are being requested is in the south west corner of the property identified on the map as Area 2. This area was disturbed by previous operators and this amendment includes this disturbance. This amendment shall accommodate the minimum offsets while maximizing the water storage volume for post reclamation use. This area is not a mining area as much as it is an amendment to the reclamation. The modifications proposed in Area 2 do not create any additional encroachment of existing structures. This area of impact is approximately 0.25 acres and there is not any significant depth of material. The current method of mining is a dry mining operation with de-watering occurring in the southeast corner of the property. De-watering trenches have been excavated and the sand and gravel is subsequently mined using an excavator to load haul trucks to haul material to a stockpile to feed the crusher plant. The crusher plant is loaded with front end loaders and the final product of road base will be loaded into trucks with front end loaders from a stockpile. The pit is currently mined in areas of 15- 20 acres at a time with 5-10 feet of depth of material. Stability analysis were performed with the Loloff Pit Permit M-1985-112 Technical Revision No. 1 and all mining techniques submitted with TR-01 will apply to the amended areas to be mined. The results of the stability analysis have been attached for your review. There is no use of explosives on this site and there are no explosives to be stored on site. The material being mined currently is sand and gravel that is crushed and screened to create various road base products or it is sold as pit run and used for construction materials. These construction materials are being utilized in the oil and gas fields for pad site construction and with the current boom in development,the intended timeline for the completion of the reclamation of the pit is 2016, but is subject to change as the industry changes. It should be noted that the slopes are being graded to the final reclamation slopes as mining operations are on-going. It is the owner's intent to have a slurry wall installed to mitigate infiltration of ground water as part of the final reclamation plan,so re-vegetation of the slopes has not begun, but shall be completed once the wall is installed.