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• III IIIIIIIIIIIIIIII • Robert D. Corey a9u9.t,.,,__.. Corey 62237 Spring Creek Road Montrose, Colorado 81401 March 20, 1987 Mined Iand Reclamation Division 423 Centennial Building 1313 Sherman Street Denver, Colorado 80203 - 2273 Attention: Karen A. Hallner, Reclamation Specialist Reference: File No. M-87-024, Corey Gravel Pit No. 3 Dear Karen: As requested I am supplying the following information: Exhibit C - Mining Plan Page 1 of 2 REC~IVEC~ MAR 231987 MINED LAND RECLAMATION DIV131ON 1. The amount of material required to form the three to one slope on the south face is approximately 70,000 cubic yards. The overburden in the pit is primarily topsoil that I intend to use in the preparation of a seed bed. There is approximately 8,800 cubic yards of this material. The pit will be mined leaving the bulk of the three to one slope in place. 2. The maximum height of the south face is approximately 35 feet. In the interest of safety it will be mined in a series of lifts to reduce the effect of vertical feathering on the mine wall. 3. The depth of overburden varies from three feet to one foot using an average of one and one-half feet, there is approximately 8,800 cubic yards of material. 4. Enclosed you will find a map (exhibit E-1) developed using aerial photo- _ graphs supplied by the soil conversation service. To my knowledge this represents the area that was disturbed in previous operations and limits that could be mined under this application. Stakes will be placed at the southern boundry as requested. From the measurements taken, mining could proceed 65 feet taking the full depth of the gravel across the south face and then proceed on a three to one slope for 105 feet to the south boundry of the pit. This represents approximately 82,000 cubic yards of usable material. The rate at which this material will be mined is dependent on economic conditions. It is my intention to make a yearly reclamation plan starting this year at the north end and proceed southerly as the mining progresses. Under this plan I hope to apply for a release on the reclamed acerage.