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l A <br />i <br />C <br />G <br />l~ <br />~ <br /> rave <br />Env <br />ronmenta <br />ssessment <br />Mule <br />reek <br />Page 16 <br />' use of seeded species from locally native plants, fertilizers and mulch will also apply to <br /> the reclamation activities. <br />' The proposed mining azea has been identified as Management Area 2B, which <br /> emphasizes outdoor recreation in roaded natural or rural setting. The proposed area <br /> <br />i (section 30) is within the active grazing allotment "Four Mile." Anon-native population <br /> of leafy spurge (approximately 15 acres in size) is present at the site and would be <br /> scheduled for chemical control treatments. <br />' i <br /> The reclamat <br />on process would involve the following steps: <br />1. The proposed mining process would facilitate reclamation by reducing slopes <br />to between 2:1 and 3:1, with the exception of possible rock outcrops. To the <br />extent practical, the contours will be reshaped to simulate natural topographic <br />t conditions and slopes would be varied to include random flat areas of various <br />sizes and shapes. Contouring during reclamation would also include the <br />creation of water bazs draining to the flat azeas and other measures to <br />' minimize erosion. It is likely that there will be some hard rock outcroppings <br />that will remain after the mining process. <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br /> <br />2. The ground surface would then be scarified and the stockpiled topsoil would <br />be distributed with an average depth of 3 inches on slopes and 1-1/2 inches on <br />flat areas. It may be necessary to import additional topsoil, depending upon <br />the amount available from stockpiles created during the site preparation phase. <br />3. The areas covered with topsoil would then be seeded following surface <br />preparation with a spring tooth harrow. The composition of the seed mix to <br />be used is presented in the following table (Table 2.1). The seed would be <br />broadcast by hand and a drag would be pulled over the seeded area to cover <br />the seed. <br />Table 2.1 -Seed Mix com osition <br />Kind and Variety Scientific name Pure Germ Origin <br />Perennial Ryegrass, Penguin Lolium perenne 19.8 96% OR <br />Smooth Brome, Lincoln Bromopsis inermis 18.0 85% KS <br />Canada Bluegrass, Reubens Poa compressa 14.7 97°/a ID <br />Tall Fescue, Fawn Festuca arundinacea 9.93 90% OR <br />Kentucky Bluegrass, Newport Poa pratensis 9.89 90% JD <br />Slender Wheatgrass Agrapyron trachycaulum 9.80 98% CAN <br />Sheep Fescue Festuca ovira 9.61 94% CAN <br />Alsike Clover Trifolium hybridum 4.89 99% CAN <br />Hydrosphere Rcsource Consultants, 1002 Walnut Suile 200, Boulder, CO 80102 <br />