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COLOWYO COAL COMPANY <br />SECTION 1 - INTRODUCTION <br />Rills and gullies forming in reclamation areas that are regraded and topsoiled if they <br />either (1) disrupt the approved postmining land use or the reestablishment of the <br />vegetative covers or (2) cause or contribute to a violation of water quality standards for <br />receiving streams. These features will be identified during the spring of each year. As <br />part of the spring inspection, regraded and topsoiled areas will be visually inspected and <br />rills and gullies identified. <br />This report provides a summary of any identified rills and gullies, all activities <br />undertaken to remediate these areas, and anticipated time frames for repair. This <br />report will be submitted annually and no later than June 15 of each year. <br />SECTION 2 — IDENTIFIED RILLS AND GULLIES <br />In 2014, three areas encompassing a total of five reclamation blocks have been <br />identified for the repair of rilling and /or gullies. Please see Map 1 for location of <br />identified areas. <br />SECTION 3 — MITIGATION MEASURES <br />Area 1 is located in reclamation blocks WP014, WP019, and WP020 in the West Pit. A <br />small dozer (D6) will repair the rills, the contour ditches that topped over, and the area <br />above the rills that is contributing to the erosion. The area will then be reseeded with <br />the approved seed mix. <br />Area 2 is located in reclamation blocks WPO18 and WP020 in the West Pit. A small <br />dozer (D6) will repair the rills, the contour ditches that topped over, and the area above <br />the rills that is contributing to the erosion. The area will then be reseeded with the <br />approved seed mix. <br />Area 3 is in the East Pit, Section 15, within reclamation block EP057, specifically to the <br />South of the Final East Pit Ditch. Many small rills have formed in this area which was <br />topsoil and seeded in the fall of 2012. Mitigation efforts in this area will include <br />reestablishment of the western contour ditches with small dozer (D6) and correction of <br />the erosion from the contour ditch to the Final East Pit Ditch. The many smaller rills will <br />be tracked over by the dozer or repaired accordingly. When the repair has been <br />complete the area mitigated will be reseeded with the approved seed mix for that area. <br />Page 2 <br />