Laserfiche WebLink
8. Topsoiling and Revegetation of the Permanent Embankments <br /> As the final graded slopes of The Revenue Pile and the Atlas Pile are created, topsoiling <br /> must occur followed by seeding. Both piles have very specific design criteria regarding the <br /> area of the pile, slopes,benches,base perimeter, height,water handling ditches, etc. <br /> Rules: <br /> a- Prior to topsoiling, the slopes and benches to be topsoiled should be graded and <br /> checked for slope accuracy and bench locations and width, etc. If this is <br /> acceptable, topsoiling can occur and should occur in the fall, if possible. There is <br /> a shortage of topsoil within the site so some material will have to be imported to <br /> complete the full extent of the Piles. It is expected that topsoil will become <br /> available from sites in Ouray and Montrose Counties and will be imported to the <br /> mine site. <br /> b- Topsoil should be placed in 12 inch lifts and should not be compacted. Some <br /> vegetation mixed with the soil is acceptable. <br /> c- The area of topsoiling is dependent upon what topsoil is available, and the <br /> amount of area done at each year is at the discretion of the surface mine <br /> manager, however, it is best to topsoil as much regraded area as possible, once <br /> the regrading is complete. The topsoil does not need to be smooth; it is actually <br /> better if it is slightly rough, which gives the seed good places to get trapped and <br /> take root. <br /> d- Once topsoiling of an area is completed, seeding should take place in late <br /> September for this altitude. Seeding should be done by either broadcast seeding <br /> or hydroseeding. Fertilizer can be applied to the area as well using broadcast <br /> methods or can be part of the mixture in the hydroseeding tank brought to the <br /> site by the contractor.A tackifier will also be used by the hydroseeding contractor <br /> if this method is used. <br /> 7 <br />