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r <br /> RECLAMATION SUGGESTIONS <br /> • Existing topsoil material , 0-24 inches, should be stockpiled. After gravel <br /> extraction has taken place, the remaining pit area should be banksloped to <br /> 4:1 or flatter where possible, and the stockpiled topsoil replaced on the <br /> areas that will be above water table level. Revegetation will require at <br /> least a twelve inch depth plant growth media for satisfactory reestablishment, <br /> Suggested Vegetative Cover: <br /> For 4:1 bankslopes with south and east exposure, a mixture of 40% Western <br /> wheatgrass (Agropyron smithii, variety Barton) , 30/ Switchgrass (Panicum <br /> virgatum, variety Grenville) and 30% Alkali sacaton (Sporobolus airoides, <br /> variety: seed source from within 150 miles of planting site) may be used. <br /> Recommended seeding rates: 40 pure live seed (PLS) per square foot. <br /> Rates arc for use with a grass drill - double for broadcast seeding. <br /> western wheatgrass, variety Barton 40% = 6.4 lbs. PLS/Acre . <br /> Switchgrass, variety Grenville 30% = 1.35 lbs. PLS/Acre <br /> Alkali sacaton 30% = 0.30 lbs. PLS/Acre <br /> TOTAL 8.05 lbs. PLS/Acre <br /> These grasses, when established, will provide excellent wildlife habitat for <br /> nesting and brood cover, - <br /> Slopes at 3: 1 should be mulched after seeding to reduce water and wind erosion <br /> before the area is protected by the seeded vegetative cover. An effective <br /> mulch of clean straw (grass, hay or cereal grain) applied at a rate of 4,000 <br /> pounds per acre, will provide 92 percent of coverage for the soil surface. <br /> This will increase soil moisture and reduce the surface temperature to protect <br /> ^_rmiccting seeds and seedlings. The straw should be crimped into the soil <br /> to prevent it from blowing and washing away. Other acceptable mulch materials <br /> are excelsior matting, jute netting and erosion control fabric. -..�.� <br /> SEEDING DATES: All seedings should be made in the spring, if possible, to <br /> take advantage of the best moisture period. Recommended dates are between rpmi <br /> March 15th and May 15th, Late fall seeding can be made after October 15th. <br /> Germination will not take place until the following spring. <br /> SEEDING EQUIPMENT: A grass drill with depth bands should be used. This will <br /> insure a better seed germination and survival rate. Broadcast seeding is <br /> acceptable but not recommended. <br /> Fiy®: <br /> Y� <br /> fiw"urw��r�^,d"'ati"rvt,�x��-7 e <br />