Laserfiche WebLink
• optimum size and development of the excavation is designed along with the annual <br />volumes of overburden materials to be moved to accommodate the anticipated <br />production schedule. <br />The subject pit has a maximum designed highwall of approximately 180 feet. After a <br />steady-state pit is opened, the backhaul system will be used to remove overburden and <br />coal. <br />Photographs of the conceptual pit were enclosed in the original permit and are on file <br />with the Division. Also refer to the cross sections (Appendix 4-2a) for a view of the <br />planned pit. The anticipated annual production is 300,000 tons per year for five yeazs <br />for an aggregate production of 1,500,000 tons. It should be noted that the annual <br />production rates aze subject to change according to markets, mining conditions and <br />economics. Accordingly, this permit is not a production based permit but an activities <br />and disturbance based permit. Nothing herein shall preclude Oakridge from, upon <br />approval of the Division, altering the annual or gross production so long as such <br />activity is within the scope of the mine plan and permitted activity. Any and all <br />modifications will be approved by the Division. <br />2.05.2(2) OQeration Description <br />• Maps 5-1 and 5-2 indicate the location of the pit and other affected areas within the <br />permit area. The operation will involve opening an initial pit with sufficient room to <br />create a haulback method of open pit mining. The initial cut material has been placed <br />in the permanently reclaimed spoils area. The mining will proceed by placing the <br />sequential "cuts" or "lifts" in the mined out area. The final cut will be backfilled and <br />regraded. The backfilling, regrading and reclamation of the pit has been planned in a <br />way that may facilitate future mining development. At the present time, no additional <br />mining is anticipated beyond that described in this permit. <br />Oakridge owns additional private lands north and south of the proposed pit area; the <br />feasibility of mining in these azeas has not been fully determined. Additional, <br />extensive exploration and study will be required before a decision can be made to <br />include such areas into a life of the mine plan. Consequently, the only area to be <br />affected with this permit term is the present Carbon Junction surface mine herein <br />described. <br />As previously discussed, the annual production of coal will be approximately 300,000 <br />tons, or about 25,000 tons per month, after all facilities are in place and mine is in full <br />operation. However, the monthly production will vary during start-up, beginning on <br />month one of year one. See Map 5-2 and Appendix 4-2A for a description and location <br />of the life system and cross sections of the planned pit. <br />Technical Revision 08 (v 1.3) 5-3 Revised 9/1997 <br />