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cover crop for wind reduction. Cover crops may be seeded throughout an entire field or they <br />may be planted in strips perpendicular to the prevailing wind direction. Cover crop seeding rates <br />will be adjusted based on their deployment and intended use. For example, a cover crop seeded <br />by itself for temporary protection will be applied at the rate of 30 pounds of pure live seed per <br />acre. A cover crop planted along with the permanent reclamation seed mixtures would be seeded <br />at the rate of 10 pounds of pure live seed per acre. <br />Mulching <br />GCC Rio Grande, Inc. -Red Rock Mine <br />Drought Management Plan <br />Mulching with cereal/grain straw or native hay can reduce wind erosion. Mulching methods are <br />described in detail in the revegetation section of the permit document. When mulch is crimped, <br />it will be anchored at right angles to the prevailing winds to the extent this is practicable. <br />Organic Matter <br />Using organic matter in highly erosive areas can decrease erosion and promote establishment of <br />vegetation. One study has shown that organic matter application reduced soil loss by 86 percent <br />compared to bare soils (Demars, 1998). Once incorporated with the soil, organic matter can <br />increase infiltration up to 125 percent (Demars, 1998). Organic matter controls erosion by: <br />• Increasing water infiltration; <br />• Reducing runoff and soil particle transport in runoff; <br />• Increasing plant growth and soil cover; <br />• Reducing soil particle dislodging; <br />• Increasing water - holding capacity of soil, that in turn reduces storm <br />water runoff; <br />• Buffering soil pH that can increase vegetation establishment and <br />growth; <br />• Alleviating soil compaction by increasing soil structure; and <br />Habitat Management, Inc. 7 03/ 03/ 2003 <br />