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4.0 - Revegetation Methods - Reclaimed Irrigated Pastureland <br />The majority of the revegetated areas will be returned to a postmining land use of irrigated pasture <br />including lands within the permit area which have not been disturbed, butwhich have had irrigation <br />water shut -off in order to better control and manage surface and ground water within the mine <br />area during operations. These latter lands occur in the south and north portion of the proposed <br />permit expansion area. Map 2.05.4 -5 shows all Reclaimed Irrigated Pasturelands as well as all <br />other post -mine land uses. <br />4.1 Topsoil Replacement - General Comments <br />Topsoil replacement operations may be carried out during most of the year, the exception being <br />those periods when wet conditions would preclude handling of the topsoil materials. Prior to <br />replacement of topsoil, the graded spoil will be ripped to reduce compaction. Detailed topsoil <br />handling and replacement plans are provided in Section 2.05.4(2)(d), Topsoil (Redistribution). <br />Prior to final seedbed preparation, soil conditioning and weed control tillage will be carried out <br />through the use of chisel plowing and disking. Chisel plowing will relieve any topsoil compaction, <br />will aid in controlling weedy species, and will leave the site in a temporary toughened condition <br />reducing wind and water erosion potential. Disking will be used to condition soil, break up clods, <br />and control weeds through tillage prior to seeding. If annual weeds are a problem, several tillage <br />operations may be required to get adequate control. Harrowing and cultipacking prior to seeding <br />will be conducted as needed in order to provide the smooth, firm seedbed required. In any areas <br />that may be poorly drained, tillage will be timed in order to reduce bogging, excessive compaction <br />and excessive cloddiness caused by tillage when soils are wet. The best period for tillage in these <br />areas may be in the early spring prior to the irrigation season (prior to mid - April). Section <br />2.05.4(2)(d), Topsoil (Redistribution), contains additional information on subsoil and topsoil <br />conditioning. <br />PR -06 June 2010 2.05.4(2)(e) -15 <br />