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• E.4 SITE-SPECIFIC RE(:LAMATIDN PRACTICES <br />~iradin~ <br />Upon reclamation and decommissioning, the site will be graded to be at <br />slopes appropriate to the proposed post-mining land use (rangeland- <br />wildlife). The post-mining slopes will not exceed those ^~lt~SeYttfiq'ex4sting <br />in the immediate area (Exhibit F) and, in no case, will:pe steeper than 3:1. <br />Surfa~ee drainage will be reestablished to pre-mining conditions. <br />All grading will be done in a manner to control erosion and siltation of <br />affected lands. <br />E.4.2 Topsoil Stripping, Stockpiling, and Replacement <br />In the preparation process, the native topsoil on the disturbed areas will <br />be removed and stockpiled to the extent possible. Suitable surface soil <br />• materials will be scraped from the areas of disturbance and stockpiled at <br />designated locations, as described in Exhibit D. <br />Surfaces of topsoil stockpiles will be temporarily stabilized and protected <br />from wind and water erosion by seeding suitable grass species. Selected <br />species may include tall wheatgrass (Agropyron elongatum), crested <br />wheatgrass (Agropyron cristatum), western wheatgrass (A. smithii), Indian <br />ricegrass (Dryzopsis hymenoides), alfalfa, and sweetclover. An established <br />grass and forb cover will be adequate to protect topsoil stockpiles form <br />erosion until the soil is needed for reclamation. Topsoil suitability <br />ratings and approximate soil volumes are indicated in Exhibit I. The amount <br />of topsoil available will allow for a topsoil respreading depth of six to <br />twelve inches. The i:opsoil will be spread as evenly as practical on the <br />regraded surfaces. <br />E.4.3 Surface Preparation <br />Where necessary, surfaces to be reclaimed will be ripped prior to receiving <br />a topsoil cover from the topsoil stockpiles. Surface tillage and seedbed <br />E-3 <br />