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<br />' F'rior to seedbed preparation, I)iammonium Phosphate (18- <br />6e spread over- the dis~t.urbed area at a rate of 'Ui! p 6-O) will <br />-~unds per- <br />, acre. Following fertilization, the seedbed will be hurnugi-J. 'y <br /> <br />' tilled to a depth of 4 to h inches. Seed will then be <br />a depth of 1/4" to 1/~" in the seedbed. Jr-:ii. 1.:=..1 to <br /> Seed will 6e drilled in two directions, the second se~ rl:.i~~.r nom:=;; <br /> will be done perpendicular to the first. Following :irriti., <br />~ <br />.~ <br />' operations, native hay n~ulch will be spread over the s - <br />` <br />e:~er1 :: <br /> at a rate of 1.5 tons per acre. Within 24 hours of mul h!. r-~q, ;I~r= <br /> <br />' straw will be crimped 1" tc; 4" into the soil using cou <br />discs with centers no more than 18" apart. Crimping wi Cr-'r ~-.,I~:.: <br />1 ai.se I~: <br /> done in two directions, with the second crimping pass cr~~ c.t v <br />' right angle to the first. Immediately after- <br />operations, water wi 11 be applied at the rate of 10, i]f cri.~y:i~.~l <br />~.:! g.;! 1. ~.,: ;, <br /> per- acre. In this manner, the timely and permanent es t:. bii J~mr_i:t <br /> of seeded species will be enhanced. <br />' Premature grazing will be detrimental to newly e tablist-~ed <br /> pleants. Grazing will therefore be restricted on resee ed s.itcs <br />' until grasses have set seed {.he second growing sea <br />revegetation. on after <br /> In the event accessibility to seeding areas becomes a si gnificant <br /> factor, seed, fertilizer and hay may be I-~anci roadr_ast. <br />' F<evegetation by broadcast. rr~etl-!ods will be deemed appro elate if <br /> the mine site is too mi.rddy and/or rocky to allow a ccess to <br />i ~ machinery. However, all areas which are firm a <br />vehicular travel and acce=~sible will I:re tr-eatecl by the: ough fur <br />echanir_al <br /> revegetation measures outlined above. <br />' The segr.ience of revegetation prc;cedures for broadcast seedings <br /> will be the same as those outlined for mechanical r-ev getation. <br /> Hand distribution will require that the specified rates for drill <br /> !needing t;e doubled. After seed and fertilizer have be n spread, <br /> these 'two products will be ra4::ed into the soil to a dept h of I/4" <br /> to 1/2". Straw mulch will Le hand crimped or covered with a <br />' light layer of soil. Mulch anchoring by either of tl~e <br />assures appropriate seedling microclimate modificati a methods <br />n until <br /> seeded species become established. <br /> Though post mine establishment of shrub and tree spec ies would <br />t enhance wildlife use of tl-re Walker North permit ar a, such <br /> plantings would 6e unsuccessful within imposed limitat ions and <br />' contrary to the essence of native revegetation. Lac4:: o <br />soil rooting medium, very low pre- and post-mine so a 'top- <br />il water <br /> holding capacity, the absence of a perennial water sc,u ~ce, and <br /> <br />' the naturally depressed soil fertility of the permit: a <br />hihits the unaided establi~ahrnent and permanence of spec ea pro- <br />es such <br /> as plum, buffaloberry, chokecherry, wild rose, sandhill cherry, <br /> Russian olive and cottonwood. Ongoing fertilization an ir-riga- <br /> ti on practices would have to be undertaken in order to a sure the <br />' continued e>:istence of ttisse species. <br /> <br /> E-2 <br /> <br />