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• . • <br />• 5. SITE DISTURBANCE: <br />The Colorado Mined Land Reclamation Board has defined different degrees <br />of disturbance in a mining and reclamation operation. The definition of <br />those three Types of disturbance is as follows: <br />Major Disturbance: That area of a mining operation that includes ex- <br />' cavations, overburden spoils, and topsoil stockpiles. <br />Moderate_b'isturbance: That area of a mining operation which is a result <br />of backfilling of an open cut, stabilization of waste dumps, leveling of <br />overburdened soils the smooth grading and the distribution of topsoil or <br />other suitable approved plant growth medium. Also includes within the <br />affected area, on-site privateways; roads; railroads; evaporation or <br />settling ponds; leeching dumps; work parking storage or discharge areas <br />and areas in which structures, facilities, equipment, machines, tools or <br />other materials or properties which result from or are used in the mining <br />operation are situated. <br />• Minor Disturbance: That area of a mining operation which is undergoing <br />preparation iininediately prior to planting or seeding; is being planted or <br />seeded; Gr' ha5 been planted or seeded and has nct been released from bond <br />upon full completion of all reclamation requirements as set forth in tire <br />permit. <br />Initial hr•eakdown of the site shows the following total areas for the basic <br />site conditions. <br />Open Space (Undisturbed) <br />Plant Site <br />Mined Areas <br />89.9 Acres <br />17.5 Acres <br />_139.3 Acres <br />Total 216.7. Acres <br />Table L (page L-2) shows a breakdown for each phase with areas far each degree <br />of disturbance. As Areas 3 through 5 are too large to mine all at once, a <br />15 Acre portion was considered the maximum that would be disturbed at any one <br />time. On the average, this 15 Acres would provide 12 to 15 months of mining <br />operation. <br />• <br />Revised: 11-4-83 <br />D - 6 <br />