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,~ MINING PLAN EXHIBIT D BARTLEY GRAVEL PIT (112) Section 15, T40N, R19W, NMPM Expansion of the mining area west and north of 110 Permit No. 84-155 is expected to be required late in the fall of 1986 upon completion of the southerly parts of the presently permitted area. Topsoil remaining on that southerly portion will be dozed west to the existing topsoil stockpile and the remaining sandstone resources ripped and dozed into a stockpile in the "worked out" pit floor immediately to the north. Stockpiles of prepared "product" will then be loaded into trucks for transport to western county road construction and maintenance projects. (See Fig. 1) Following depletion of the resources in the south part of the 110 permitted area topsoil will be shifted to the graded, worked-out pit floor. Topsoil and overburden will then be stripped from the newly permitted (112) Area "A" and stockpiled to either side in the completed southerly end of the 110 permit and westerly adjacent to the new Excavation Area "A". Sandstone resources will be ripped and dozed into stockpiles to the north to be hauled away. Resources should be depleted from Excavation Area "A" late 1986. (See Fig. 2) Succeeding excavations B, C, ~ D will proceed north to northeast along the gas pipeline right-of-way to the northeast boundary corner of the new (112) permitted area. Units for excavation at a particular time are limited by the practicality of moving topsoil and rip-loosened sandstone gravel product by bulldozer. It has been demonstrated that dozing cannot be cost effective over distances greater than 200 to 300 feet. '~Jork units then shall be limited to approximately three acres at a time, although preparations for a fresh area may begin while finishing the on-going area. After depletion of recoverable resource southeast of the pipeline right-of-way, excavation will proceed west and southwest from the northeast corner of the permitted area, using worked out areas to stockpile topsoil and prepared gravel product where practical. All of the permitted area, except the fifty-foot wide pipeline right-of-way, is considered to be major disturbance, since it is all excavated and utilized for processing before reclamation topsoiling can begin.