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charged where erosion cannot occur. In addition, a berm will _ be constructed along the outer edge of the terraces to confine ~' water on the surface of the three terraces. The terraces will also be plowed parallel to the contour of the land to concentrate water on the surface of the terraces, which will be revegetated. The establishment of vegetation on the reworked Cash mine dump will also contribute to stabilizing the surface of the mine dump. Voluntary revegetation has not occurred on the mine dump because of the high concentration of salts, metals and acids associated with the mineralized vein portion of the Cash mine dump. The removal of this vein material and the reduc- tion of the steep slopes will encourage revegetation. As vol- untary revegetation will not occur for many years, trees will be planted at regular intervals on the terraces, Since trees are slow to form soil profiles and do not provide effective chemical pollution control until long after planting, shrubs will also be planted on the terraces. Because the reworked mine dump material will contain little soil and will have low nutrient levels, the trees and shrubs will have to be planted in specially treated and improved soil transported to the re- clamation site. In order to initiate rapid vegetation growth, native species will be collected from the area or purchased _ from a nursery and transplanted at the site. Approximately three years before the Cash mine dump has been completely reworked and the terraces have been constructed, field tests will be conducted using a variety of native tree and shrub species. These field tests will help establish the proper soil conditions necessary to promote vegetation growth, and assist in selecting the proper trees and shrubs for trans- planting after the completion of the surface operation. The northeastern part of the Cash mine dump includes an area sur- rounded by the lower access roads that is identical in compo- sition to the main portion of the mine dump. Because of its location and composition, this area has been selected as a test site for the vegetation and reclamation plan for the Cash mine dump. A list of the native tree and shrub species that will be planted in this test site is given below. A final selection of the vegetation that will be transplanted onto the main portion of the Cash mine dump will be made from these trees and shrubs. Trees Lodgepole Pine Limber Pine Ponderosa Pine Engelmann Spruce Blue Spruce Shrubs Common Juniper Kinnikinnick Myrtle Blueberry Native Rose Bitterbrush Between 50 and 60 trees ranging from 3 to 6 feet in height will be planted every 15 feet in a row in the center of each terrace. Approximately 60 shrubs will be planted between the trees. In the event that more than one species of tree is selected for transplanting, the trees will be planted in pure stands. As an example, a variety of pine may be transplanted on the terraces at the southern end of the reworked Cash mine dump, and a variety of spruce transplanted on the northeastern terraces. The shrubs that will be planted on the reworked Cash mine dump have been selected to provide food and habitation for the wildlife that inhabit this area. The leaves and twigs of Kinnikinnick are eaten by deer during the fall and winter, and rodents, songbirds, and grouse eat the berries found on Kinnikinnick, Myrtle Blueberry, and the Common Juniper. Sitterbruah is a favored browse of deer, and small rodents eat the seeds of this evergreen shrub, In order to insure that a long-lasting vegetative cover will be established on the reworked Cash mine dump, a wood fiber mulch and appropriate soil amendments and fertilizers will be applied to the terraces. The mulch will decrease erosion and -16-