2018-01-03_REVISION - C1994082 (29)

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such, Seneca Property, LLC presented analyses of impacts of elevated conductivity levels in terms of material damage in PR -01. The Division agreed with Seneca Property, LLC's analyses and found that the Yoast permit application package complied with Rule 2.07.6(2)(c) & (k), which was the subject of Stipulation No. 7. The Division also found that the permit application package complied with Rule 2.06.8(4), which was the subject of Stipulation No. 9. Therefore, Stipulation Number 7 & 9 were found complied with and removed prior to the submittal of the application for RN4. IV. Topsoil Baseline soils information is found in Tab 9 of the permit application package. Mine soil reconstruction is discussed in Tab 21. All available, suitable topsoil was for the most part salvaged from areas disturbed by mining and either stored in a stockpile or immediately redistributed on regraded areas. The locations of the sixteen topsoil stockpiles used during mining operations are shown on Exhibit 12-1. Five topsoil stockpiles remain, with a total combined volume of 70.5 acre feet. Stockpiles were seeded following construction, to protect the topsoil from erosion; the remaining five stockpiles are marked with identification signs. Topsoil was not salvaged from approximately 69 of the 989.6 affected acres at the Yoast Mine. Topsoil was not salvaged from these areas because 1.) steep slopes made salvage operations unsafe, 2.) rock outcrops or unsuitably high clay content precluded use of the material, and/or 3.) the area was been disturbed prior to mining or was under water. Soil salvage operations were monitored by Seneca Property in the field to verify removal of all available topsoil. Replaced topsoil thickness was verified by sampling reclaimed areas prior to seeding with at least one hole per five acres. Results of this sampling are documented in the Annual Reclamation Reports submitted to the Division each year. Regraded pit areas were covered with an average of 1.8 feet, and a minimum of 1.0 foot, of topsoil. Areas where shrub or tree islands were to be established were to be covered with 0.5 feet of topsoil. The facilities areas, where subsoils will not be disturbed, were to be covered with an average of 1.1 feet, and a minimum of 0.5 feet of topsoil. No topsoil substitute materials are proposed for use in the Yoast reclamation plan. Reclaimed areas will continue to be monitored annually for the presence of rills and gullies. The location of these erosional features will be indicated on a map, and a report will be generated to describe the features noted and any necessary mitigation. A copy of the map and report will be submitted to the Division for its review. Details regarding the rill and gully survey and reporting are located in Tab 22 of the permit application package. V. Sealing of Drilled Holes and Underground Openings 26