Laserfiche WebLink
loss of the topsoil resource. <br />Any topsoil stockpile which will remain in place 90 to 180 days will be stabilized by utilizing an <br />annual grain (barley, oats or wheat) cover crop. The seeding rate will be 70 pound per acre <br />broadcast. <br />Protection and maintenance of "long-term" topsoil stockpiles will begin when a stockpile is <br />temporarily or fully completed and no more additions or withdrawals of topsoil are to be made <br />within a 180 day time period. Topsoil stockpiles will be stabilized primarily by perennial plant <br />establishment. The seed mixture, and seeding rate for long-term topsoil stockpiles is described <br />in the Revegetation Plan, Section 2.05.4 (2)(e). <br />Establishing vegetative cover will aid in overall stabilization and erosion control of stockpiles. <br />Vegetative cover will aid in reducing runoff and raindrop impact and will increase moisture <br />infiltration by maintaining the upper soil surtaces in a friable, noncrusted condition. Organic <br />matter, soil nitrogen, and microorganism activity will be maintained or enhanced by the seeding <br />of deep rooted species or species with fibrous root systems. <br />Topsoil Replacement. Topsoil will be replaced only when the approved postmine contours are <br />achieved and when no additional disturbance is anticipated. Topsoil will not be replaced on <br />temporary reclamation sites such as haul road ditches, cut, slopes and fill slopes, pond <br />embankments and spillways, and diversion ditches. Temporary reclamation sites will be <br />seeded and stabilized as described in Section 2.05.3(2)(e) Revegetation. Topsoil will be <br />replaced within the aforementioned areas once final reclamation is achieved. Topsoil shall be <br />replaced along the contour, whenever feasible, to minimize potential erosion and topsoil/spoil <br />interface slippage problems. This practice will be discontinued on steep slopes where the safety <br />of the equipment operator is in jeopardy. Topsoil which is replaced on mined areas will be <br />scarified on the contour to a depth of 12 to 24 inches with a chisel plow or ripper. The operation <br />of seed bed preparation will also reduce compaction, increase infiltration, and promote surface <br />roughness. Spoil and topsoil scarification is also discussed in the Seed Bed Preparation section <br />of the Revegetation Plan, Section 2.05.4(2)(e). <br />• (Revisetl ~3/iz/oz> 2.05.4(2)(d) - 13 <br />