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Chapter II <br /> c. Non-coal Refuse Disposal. <br /> Non-coal waste will be handled and disposed in accordance with CMLRB regulations, section <br /> 4.11.4 - Disposal of Non-coal Waste. <br /> (1) Solid Non-coal Waste Disposal. <br /> Solid non-coal waste will be disposed in the approved solid waste disposal sites, which is <br /> situated at the toe of the rock tunnel fill. <br /> Waste material will be covered over and compacted when ground conditions are sufficiently <br /> dry, during the period after snowmelt and prior to snowfall. The operator will avoid coverage <br /> and compaction when ground conditions are wet or snowcovered and frozen. When the mine <br /> is operating coverage and compaction of the trash pile will be done monthly during the months <br /> July through October, and as ground conditions allow during other months. <br /> (2) Liquid Waste Disposal. <br /> Petroleum products are collected and stored temporarily at the maintenance shop prior to <br /> being removed from the mine site for re-cycling. Oil cans and drums, containers for lubricant <br /> and hydraulic fluid will be collected at designated areas prior to being removed from the mine <br /> site for disposal. Concrete containment structures will be installed at the rock tunnel and <br /> central yard complex areas as part of preparation for resumption of mining. Such <br /> preparations are anticipated during fall, 1992. These areas are designated on the revised map <br /> 11-13-7 as "petroleum containment areas." <br /> VV <br /> ZIP <br /> 9. UNDERGROUND DEVELOPMENT WASTE `� r <br /> a. Rock Disposal Area <br /> Material excavated in the construction of the rock tunnel has been placed in the designated <br /> tunnel fill area. Mid-Continent estimates that approximately 365,000 cu. yds. of material has <br /> been placed in this facility. The approved waste design for this facility has a capacity of 1.08 <br /> million cu. yds., so there is substantial excess capacity in the facility. <br /> Mid-Continent anticipates that material excavated in further underground development work on <br /> the tunnel and on the raw coal storage facility will be placed on the approved tunnel waste <br /> disposar area until the facility reaches capacity. <br /> In construction of the current pile, the tunnel spoil material was spread on the waste pile so as <br /> to maintain a perimeter slope at the ratio of 2h:1v or less. <br /> 44 <br /> Revised 6192 <br />