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information required by 2.04.9 and shall specify the volume of each type of material to be <br />salvaged. <br />The requirements of 2.05.3(5) are essentially reiterated in 2.05.4(2)(c), which specifies a <br />plan for removal and storage of topsoil, subsoil, and other material pursuant to <br />requirements of 4.06. In addition, 2.05.4(2)(c) requires a plan for redistribution of <br />topsoil, subsoil, and other material to meet the requirements of 4.06. <br />Performance standards of Rule 4.06 that are of particular note for this evaluation include <br />the following: <br />4.06.2(2)(b) states in part, that the depth of topsoil to be salvaged shall be determined <br />from the site specific soils information required in 2.04.9 as approved by the Division. <br />4.06.2(3) addresses subsoil segregation, and states that the B horizon and portions of the <br />C horizon, or other underlying layers demonstrated to have qualities for comparable root <br />development shall be segregated and replaced as subsoil, only if the Division determines <br />that such material is necessary to ensure soil productivity consistent with the approved <br />postmining land use. <br />4.06.2(5) requires that, to the extent practicable, the surface soil layer shall be removed <br />at a time when the physical and chemical properties of topsoil can be protected... <br />4.06.4(2) requires that topsoil and other materials be redistributed in a manner that <br />achieves an approximate uniform thickness consistent with postmining land use and <br />vegetation requirements, prevents excess compaction and contamination, minimizes <br />deterioration of biological, chemical, and physical properties, and protects topsoil from <br />wind and water erosion. <br />Excerpts Regarding Soil Salvage and Replacement Procedures for the NH-2 Mine <br />Area from the Division's Current (RN-04) Findings Document (March 2003) <br />In association with Permit Revision No. 5, a new soil survey encompassing <br />approximately 376 acres to the northwest of the previously approved New <br />Horizon 2 permit area was conducted ...A two lift salvage procedure will be <br />utilized on all map units, with the exception of two relatively shallow upland soils, <br />Valley City-Rock Outcrop Complex (98B) and Waheap Fine Sandy Loam (98H). <br />These shallow rangeland soils will be salvaged using a single lift procedure. <br />(p.10/11) <br />Topsoil salvaging depths and plans are detailed in Section 2.04.9 of the permit <br />application. (p. 11) <br />• At the New Horizon Mine 2 area, a total soil replacement depth of approximately <br />3.4 feet is projected for irrigated haylands and irrigated pasturelands designated <br />as "Block A ", on Map 2.05.4-4. A total replacement depth of approximately 1.9 <br />4