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2.05.3(51 <br />• Topsoil stockpiles will be so constructed to reduce erosion <br />of the stockpiles by either wind or water. Topsoil stockpiles <br />that are to remain in place for more than ninety days will be <br />seeded as soon as practical, with the following seed mix, and <br />berms will be constructed around the base of stockpiles where <br />necessary to prevent loss of topsoil material from the stock- <br />piles. <br />Topsoil Stockpile Seed Mix <br />Seeding Rate <br /># PLS/Acre <br />Red Clover, Trifolium repens 2.00 <br />Tall wheatgrass, Agropyron elongatum 2.00 <br />Annual ryegrass, Lolium multiflorum 3.00 <br />Russian wildrye, Elymus junceus 1.00 <br />Western wheatgrass, Agropyron smithii 1.00 <br />Totals 9.00 <br />Seeding rate is for drill seeding - rate should be doubled for <br />broadcast seeding. <br /># PLS/Acre - Pounds of pure live seed per acre. <br />Topsoil stockpiles that remain in place less than ninety <br />• days will be protected from erosion by the most practical and <br />economical means. This may include, but not be limited to; <br />contour disking, terracing, mulching, ripping or seeding to a <br />temporary vegetative cover. All suitable topsoil material will <br />be salvaged and utilized in the reclamation process. Enough <br />suitable material will be reserved in stockpiles for final recla- <br />mation of all disturbed areas and any necessary remedial mainte- <br />nance or repair of reclaimed areas. <br />• 2.05-10i May 1991 <br />