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Portions of the C horizon salvaged in a separate lift. Two upland soil map units <br /> within the PR-05 revision area which support native rangeland are characterized by <br /> thin surface horizons. Within these units (98B and 98H), A, B, and portions of the C <br /> horizons will be combined in a single lift. Single lift soil replacement will be <br /> employed on dryland pasture reclaimed areas (Replacement Block "D", on Map <br /> ?05.4-4), whereas two lift replacement will be employed on irrigated pastureland and <br /> hayland (Replacement Blocks "A", "B", and "C). <br /> B. The Division has determined selected overburden materials shall be used for, or as a <br /> supplement to topsoil. The resulting soil is equal to or better than the available <br /> topsoil. This determination is based on physical and chemical analyses and field-site <br /> trials approved by the Division (4.06.2(4)(a)). <br /> C. The applicant has submitted a plan for reclamation of excessive rills and gullies. The <br /> plan is included in Section 2.05.4(2)(e) of the permit application. This plan is <br /> proposed to be approved by the Division (4.14.6(1)). <br /> IV. Sealing of Drilled Holes and Underground Openings <br /> A. The Division will require that each hole, well or other underground opening be capped, <br /> sealed, backfilled, or otherwise properly managed (4.07.3). <br /> V. Use of Explosives <br /> A. The applicant has proposed to conduct blasting less than 1,000 feet from a school, <br /> church, hospital, or nursing facility, or less than 500 feet from disposal wells, <br /> petroleum or gas storage facilities, municipal water-storage facilities, <br /> fluid-transmission pipelines, gas or oil collection lines, or water or sewage lines. The <br /> Division proposes to approve these lesser distances based upon pre-blasting surveys, <br /> seismic investigations, and other appropriate investigations (4.08.4(7)). <br /> B. The Division is proposing to approve the use of seismograph recorders to aide in the <br /> design of blasts to determine maximum weight of explosives per delay. The design <br /> is based upon cumulative seismograph records of each blast. The designs ensure that <br /> blasts will not result in a failure and comply with the limitations of 4.08.4(10) at a 95 <br /> percent level of confidence. (4.08.6(2)). <br /> 24 <br />