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Revisions Approved Since RN-02 Approval (July. 1993) <br /> Seven technical revisions(TR's),eleven minor revisions (MR's),and one Succession of Operator's (SO) have <br /> been approved since approval of RN-02. The various revisions are briefly described below: <br /> TR-16 proposed approval was issued January 4, 1994. The revision allowed for a reduced cover depth on <br /> approved coal processing waste disposal areas, and addressed details regarding reclamation sequence, soil <br /> handling, and vegetation monitoring on final reclaimed areas. <br /> TR-17 proposed approval was issued April 19, 1994. The revision established two borrow areas for refuse <br /> cover material (CBA#1 and CBA#2), and sllowed for the initial phase construction of Sediment Pond #1 1. <br /> Prior to activation of CRDA No. 3,enlargement of Pond 1 I will be required. Construction of Uppper Coal <br /> Canyon permanent channel diversion will also be required in association with CRDA No. 3 construction. <br /> TR-18 proposed approval was issued October 13, 1994. The revision allowed for reactivation of CRDA No. <br /> 1, which had been suspended due to potential stability concerns. Reactivation was approved based on <br /> completion of a thorough stability analysis,and commitment to intensively monitor water levels within the pile. <br /> TR-19 proposed approval was issued January 30, 1995. The revision allowed for excavation of a connecting <br /> channel between Sediment Ponds 1 and 2, and replacement of Pond 7 and 8 CMP spillways with riprapped <br /> open channel emergency spillways. <br /> TR-20 proposed approval was issued December 28, 1995. The revision addressed increase in coal production <br /> and underground mining sequence changes associated with reactivation of mining in the Roadside North <br /> Portals. Modifications to hydrology and subsidence monitoring requirements within the North Portals affected <br /> area were included in the revision. <br /> TR-21 proposed approval decision was issued with one stipulation on March 6, 1995. The revision allowed <br /> for expansion and modification of the coal handling area at the Roadside North Portal. Stipulation No. 14, <br /> attached to the approval, required submittal of a required air emission permit prior to implementation. An <br /> "Initial Approval" construction permit from the Air Pollution Control Division dated June 27, 1995, was <br /> subsequently submitted to the Division,as required by the stipulation. <br /> TR-22 proposed approval decision was issued October 16, 1997. The revision allowed for construction of a <br /> minewater treatment pond(Pond 12),adjacent to existing Pond 5, at the North Portal facility area. The pond <br /> was proposed to provide for surface treatment of minewater from the North Portal,discharged through CDPS <br /> Point 004. Suspended solids discharge limits had been exceeded at the location on several occasions. The <br /> revision included associated modifications to adjacent Pond 5, to accomodate Pond 12 construction. <br /> MR-18 proposed approval decision was issued July 23, 1993. The revision updated certain information <br /> regarding surface and subsurface ownership within and adjacent to the permit area. <br /> MR-19 proposed approval decision was issued November 26, 1993. The revision updated ownership and <br /> control information to reflect changes in the corporate management structure between Powderhom Coal <br /> Company and Peabody Holding Company. <br /> MR-20 proposed approval decision was issued May 16, 1994. The revision addressed the name change for <br /> the mine, from "Roadside and Cameo Mines" to "Roadside North and South Portals". <br /> 7 <br />