Laserfiche WebLink
Erosion Sediment Control <br />1. The topsoil stockpile would be seeded during the first fall planting season with a <br />BLM approved seed mix after the soil is stockpiled to control erosion of the topsoil. <br />The topsoil would be put back in place in accordance with the approved reclamation <br />plan included in the Topaz Mine POO. <br />2. Runoff from the WRA, ore stockpile area, and topsoil stockpile would be captured by <br />earthen berms located at the crest and toe of the WRA. The existing drainage <br />controls for the existing road system (culverts, waterbars, and ditches) would be <br />maintained as needed using current BLM BMPs for road stabilization. New roads <br />would be designed and would incorporate the BLM BMPs. Water bars, earthen <br />beans, straw bale barriers, and vegetation buffers would be used to control sediment <br />runoff along new roads. Erosion impacts would be minimized by installing the <br />sediment control measures discussed in Section 8.2.6.3, Surface Water. <br />3. The Operator would capture sediment from the WRA, ore stockpile area, and topsoil <br />stockpile by earthen berms located at the crest and toe of the WRA. The earthen <br />berms would be seeded with a native seed mix approved by the BLM. <br /> <br />4. The topsoil stockpile would be seeded during the first fall planting season with a <br />BLM approved seed mix after the soil is stockpiled to control erosion of the topsoil. <br />The topsoil would be put back in place in accordance with the approved reclamation <br />plan included in the Topaz Mine Plan of Operations. • <br />5. The Operator may install straw bale barriers as a temporary measure to control <br />erosion. If areas are prone to erosion, they would be re-designed and constructed to <br />effectively maintain soils in a stable condition. <br />6. Disturbed areas that are not expected to be disturbed for a significant period of time <br />would be temporarily or permanently seeded. <br />7. Sites that are no longer expected to be used would be reclaimed as soon as possible. <br />8. Runoff from the WRA, ore stockpile area, and topsoil stockpile would be captured by <br />earthen berms located at the crest and toe of the WRA. The existing drainage <br />controls for the existing road system (culverts, waterbars, and ditches) would be <br />maintained as needed using current BLM BMPs for road stabilization. New roads <br />would be designed and would incorporate the BLM BMPs. Water bars, earthen <br />berms, straw bale barriers, and vegetation buffers would be used to control sediment <br />runoff along new roads. Erosion impacts would be minimized by installing the <br />sediment control measures identified in the Stormwater Management Plan. <br />101 <br />A-2