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Regraded pit areas will be covered with an average of 1.8 feet, and a minimum of 1.0 <br />foot of topsoil. Areas where shrub or tree islands are [o be established will be <br />covered with 0.5 feet of topsoil. The facilities area, where subsoils will not be <br />disturbed, will be covered with an average of 1.1 feet, and a minimum of 0.5 feet of <br />topsoil during reclamation. No topsoil substitute materials are proposed for use in <br />the Yoast reclamation plan. <br />Reclaimed areas will be monitored annu:illy for the presence of rills and gullies. The <br />location of these erosional features will be indicated on a map, and a report will be <br />generated to describe the features noted and any necessary mitigation. A copy of the <br />map and report will be submitted to the Division for its review. Details regarding the <br />rill and gully survey and reporting are located in Tab 22 of the permit application <br />package. <br />V. Sea]ing of Drilled Holes and Underground Openings <br />All exploration, drill or boreholes, wells, or other underground openings except those <br />used solely for surface blasting will be plugged or sea]ed to prevent acid or toxic <br />drainage from entering the groundwater, minimize disturbance to the prevailing <br />hydrologic balance, and ensure safety. Details of the sealing plan are located in Tab <br />18 of the permit application package. No vaziance from regulatory requirements <br />regarding sealing has been requested or proposed for approval, and so no specific <br />findings apply. <br />VI. Use of Explosives <br />Explosives will be used to fragment overburden and exposed coal at the Yoast Mine. <br />Seneca Coal Company typically will use ammonium nitrate and fuel oil (ANFO) for <br />this purpose, primed with cast primers and detonated with detonating cord. A <br />certified blaster will be in chazge of all blasting operations to ensure compliance with <br />state and federal laws. Additional information regazding planned blasting operations <br />is located in Tab 14 of the permit application package. <br />VII. Backfilling and Grading <br />Backfilling and grading plans will ensure that disturbed areas are returned to <br />approximate original contour in a timely manner. Details of the Backfilling and <br />grading plan, schedule, and post mine topography are located in Tabs 19 and 20 of <br />the permit application package. <br />Seneca Coal Company will generate a topographic map, using photogrammetric <br />methods, of backYilled and regraded areas on an annual basis. The map will be used <br />to determine whether regraded areas are consistent with the approved postmining <br />Yoy,~ Kline 30 Msch 6, ?001 <br />