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Section 816.111 (b) Continued. <br />• (2) mhe vegetative cover shall be capable of stabilising the soil sur- <br />face from erosion. <br />(3) Vegetative cover shall be considered of the same seasonal variety <br />when it consists of a mixture of species of equal or superior utility <br />for the approved postmining land use, when compared with the utility of <br />naturally-occurring vegetation during each season of the year. <br />(4) If both the premining and postmining land uses are cropland, plant- <br />ing of the crops normally grown will meet the requirements of Paragraph <br />(b)(1) of this Section. <br />Implementation of the detailed revegetation plan described in Sections <br />780.18 (b)(5)(i) and 816.133 will assure that all areas except <br />approved water areas, will be promptly reseeded to achieve a per- <br />manent vegetative cover of the same seasonal variety native to <br />• the area of disturbed land. <br />The productivity levels of the existing area as described <br />Section 779.22 (a)(2) will be restored as the seeded vegetation matures. <br />The productivity levels of the Fish Creek bond release area, shown <br />on Energy Mines No. 1 and 2 Vegetation (Piap 15), indicate the <br />productivity levels which might be e~;pected in other parts of the <br />permit area to be used as rangeland. This area was seeded in Pfay <br />of 1974 using much less sophisticated seed mixture and reclamation <br />techniques. <br />Anticipated forage production on this reclaimed site has been <br />described by the Soil Conservation Service to be 1,500 pounds of <br />air dry forage per acre in unfavorable years, 2,000 pounds during <br />median years, and 2,500 pounds during favorable years. Actual pro- <br />duction data caas first taken on this site in August of 1976 when it <br />was found that the production of seeded grasses amounted to 244 <br /> <br />816-140 <br />