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tillage operations may be required to get adequate control. Harrowing and cultipacking prior to <br />seeding will be conducted as needed in order to provide the smooth, firm seedbed required. In <br />any areas that may be poorly drained, tillage will be timed in order to reduce bogging, excessive <br />compaction and excessive cloddiness caused by tillage when soils are wet. The best period for <br />tillage in these areas may be in the early spring prior to the irrigation season (prior to mid-April). <br />Section 2.05.4(2)(d), Topsoil (Redistribution), contains additional information on subsoil and <br />topsoil conditioning. <br />Irrigation Designs <br />Areas that are to be reclaimed as Irrigated Pasture or Intensively Managed Irrigated Pasture will <br />be irrigated using either sprinkler irrigation or flood irrigation. Map 2.05.5-1 shows all areas <br />which will be reclaimed as Intensively Managed Irrigated Pasture or Irrigated Pasture on the <br />Garvey property. <br />The calculations for both flood and sideroll sprinkler irrigation are shown in Attachment <br />2.05.4(2)(e)-1 for the reclaimed Irrigated Pasture and Intensively Managed Irrigated Pasture. <br />These calculations were made using the irrigation design worksheets from the Colorado <br />Irrigation Guide and the NRCS National Engineering Handbook Sec. 15, Chap. 11. Flood <br />irrigation will be supplied by 4 inch to 10 inch supply lines. The extent of irrigation on the <br />Garvey property will be based on the amount of shares that are available to them from the CCC <br />Ditch for this area. The designs are based on the NRCS calculations with accounting for 6 days <br />out of 7 days for operating the system, allowing one day off for rest, unforeseen issues, system <br />maintenance, family commitments, etc. This design can be seen in Attachment 2.05.4(2)(e)-1. <br />Revegetation Methods <br />As discussed in the narrative relating to the proposed postmining land uses found in Section <br />2.05.5, the majority of the mining disturbance areas will be reclaimed to a postmining land use <br />which is similar to, or improved relative to the premining conditions. As described in the <br />discussion on Topsoil Redistribution found in Section 2 2.05.4(2)(d), topsoil replacement <br />operations may be carried out during most of the year, the exception being those periods when <br />wet conditions would preclude handling of the topsoil materials due to potential soil compaction <br />problems. Prior to replacement of topsoil, the graded spoil will be ripped to reduce compaction. <br />Detailed topsoil handling and replacement plans are provided in Section 2.05.4(2)(d), Topsoil <br />Redistribution. In areas where irrigation is proposed, such as on the Intensively Managed <br />Irrigated Pasture and Irrigated Pasture areas, or on other locations where irrigation water might <br />be available to promote initial stand establishment, seeding may be carried out as late as July 15. <br />This will allow for a 75-90 day growing season, enough time to establish an adequate stand <br />capable of over -wintering. Fall dormant seedings may be made into annual grain stubble if the <br />potential for competition from established weedy species is not great. For situations where <br />temporary stabilization is required outside of the normal seeding periods, and the stabilization <br />Section 2.OS.4(2)(e) Page 2 May 2015 <br />