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Sedimentation control during mining consisted of pond HG-8, on the East Side of the mine site, and three ponds, the shop area pond, the explosive area pond, and the landfill azea pond, on the West Side of the mine site. All of the ponds, with the exception of pond HG-8 and the shop azea pond, have been removed. Pond HG-8 and the shop area pond have been approved as permanent ponds. Several diversion and collection ditches are located at the mine site. Ditches 1 and 3, and the west collection ditch have riprapped portions. Ditches 1, 2 and 3 are permanent ditches. Reclamation operations immediately followed mining cessation, with the mine pit completely backfilled and graded, topsoiled and seeded by the end of 1986. Office/shop/warehouse facilities were reclaimed in the fall of 1987. A total of 362 acres were disturbed and reclaimed at the mine site. Topsoil replacement depths averaged 21 inches. Three different seed mixtures were employed for revegetation. Pages 2.05-8, 2.05-9 and 2.05-10 of the consolidation volume from TR-63 list the seed mixes. Through Technical Revision No. 62, the Division granted approval for the establishment of three shrub augmentation azeas, in order to supplement the woody species on the mine site. A Phase I Bond Release (SL-01) was received on 14 September 1987 and approved on 29 January 1988. This bond release was for the backfilling and grading of the 319 acres on the East Side of the mine. The total amount of bond released was $855,000.00. There have been two bond releases for the Hayden Gulch Mine during the previous permit term. Bond release SL-02 was received on 5 July 1996, called complete on 19 September 1996 and approved on 19 June 1997. This was a phase I bond release for 45.1 acres of the West Side of the mine. The total amount of bond released was $108,046.73. Bond Release SL-03 was received on 27 February 1998, called complete on 2 April 1998 and approved on 20 Aprii 1999. This was a phase II and Phase III bond release that released a total of 357.3 acres from both Phase II and Phase Ili liability. A total of $528,718.00 was released ($196,271.00 was for the Phase II release and $332,447.00 for the Phase III release). Included in this decision was the agreement that the H-G Coal Company would retain liability for 6.8 acres comprised of the three shrub enclosures and the 1994 slump azea. The shrub pazcels were retained in conjunction with Technical Revision 62. These parcels were established as "shrub clusters" in lieu of a woody stem density standard for the entire mine site. The shrub enclosures were eligible for Phase III bond release on 6 June 2001. The 1994 Slump area is not eligible for Phase III bond release until the end of 2004. The Division also received and approved three Minor Revisions and two Technical Revisions during the previous Permit term. Below is a brief description of each revision. Minor Revision 12: This revision was received, called complete and approved on 29 August 1997. The revision dealt with a stability investigation for the 1994 slump area. Minor Revision 13: This revision was received on 1 April 1998, called complete on 10 April 1998 and approved on 13 May 1998. This revision dealt with mitigation measures for the 1994 slump area.