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nlix would still need to be applied to the downhill 4:1 Slope. As this technique is developed and <br />"proven modifications to seed mix placement can and should he made as necessary. <br />Figure 2.05-6 <br />SOIL FENCE CONSTRUCTION DIAGRAM (EXAMPLE) <br />I 1 2 <br />seeder seeder <br />6 seeder widths (10:1 slope) width (4:1 slope <br />Overburden <br />This additional level of complexity should not be prohlenlalic for maintaining an overall topsoil <br />balance. It will sialply add an additional laver of "bookkeeping" (Section 12 of the Annual <br />Report) beyond that which has already occurred at Colowyo over the past three decades. <br />Reve gc? ,tabor Plan <br />Hollowing the retopsoiling of an area, any necessary feltllilalioll. Surfacc preparation, her•nl <br />development, construction of contour furrows, and seeding of'the reclamation will take place. <br />The reclamation seed mixture for areas targeting grassland (,prazingland land use and erosion <br />control), as shown in Tahle 2.05-7, Reclamation Seed Mixture, contains Sufficient diversity <br />for ecolo,,;ical stability. The seed mixture contains a variety of grasses, forhs and Shruh <br />species well adapted to the soil and Illoistllre Condition, fnll?ld at Colowvo. The diverse seed <br />mixture is capable of self-selection for each reclaimed micro-habitat encountered in the <br />reclaimed areas. The diverse Seed mixture is required to ensure quick erosion control for the <br />first icw year's of reclamation as well as ohtaining the desired post-alining vegetative <br />community wlth the same seasonal variety and lifeform of the pre-Alined area. <br />The species and seeding rates indicated on this "grassland" nlix resulted from in-depth <br />analyses of' past mixes and the resulting emergence and dominance within revc,?etateef areas. <br />A total of eleven diflerent meaSUremcnt events on C'olowvo reclamation coupled with it <br />performance evaluation for each taxon in the 2002 mix resulted in development of the mix <br />indicated on 'T'able 2.05-7 as well as 'fable 2.05-9. Examples of changes resulting from this <br />analysis include: elimination of strearnbank wheatgrass (less palatable and redundant with <br />thlcksplke), elimination of hlg HILICOraSS frolll tile "raSSland mix for lack of Ilcrformance, <br />elimination of Sainfoln from both mixes for lack of performance, and substantial increases in <br />the aalount of sagehrush Seed in both grassland and especially sagehrush Steppe targeted <br />mixes. These changes, including the planted anlountS, have resulted in an increase in the <br />2.05-50 Revision Tate: x/14/09 <br />Revision No.: TR-72