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Signs will serve as continuing reminders to personnel that stockpile areas are to be preserved and <br />undisturbed. <br />Any topsoil stockpile which will remain in place less than 90 days will not be revegetated. The surface of <br />each pile will be left in a roughened condition to retard wind and water erosion. A self-contained grader <br />ditch or berm will be constructed around the perimeter of the stockpile to prevent loss of the topsoil <br />resource. <br />Any topsoil stockpile which will remain in place for 90 to 180 days will be stabilized by utilizing an annual <br />grain (barley, oats or wheat) cover crop. The seeding rate will be 70 pound per acre broadcast. <br />Protection and maintenance of "long-term" topsoil stockpiles will begin when a stockpile is temporarily or <br />fully completed and no more additions or withdrawals of topsoil are to be made within a 180 day time <br />period. Topsoil stockpiles will be stabilized primarily by perennial plant establishment. The seed mixture, <br />and seeding rate for long-term topsoil stockpiles is described in the Revegetation Plan, Section <br />2.05.4(2)(e). <br />Establishing vegetative cover will aid in overall stabilization and erosion control of stockpiles. Vegetative <br />cover will aid in reducing runoff and raindrop impact and will increase moisture infiltration by maintaining <br />the upper soil surfaces in a friable, noncrusted condition. Organic matter, soil nitrogen, and microorganism <br />activity will be maintained or enhanced by the seeding of deep rooted species or species with fibrous root <br />systems. <br />The topsoil storage breakdown as of PR -08 can be seen in Table 2.05.4(2)(d)-2 below. The stockpile <br />locations are shown on Map 2.05.4-9. <br />August 2013 (PR -08) 2.05.4(2)(d)-11 <br />