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•• 4.15.2 Use of Introduced Species <br />The examination of the seed mixture approved for the reclamation of <br />rangeland indicates that Colowyo desires to include some introduced <br />species in the mixture for which regulatory approval was obtained. <br />Introduced species included in [he seed mixture are: <br />( 1) Intermediate Wheatgrass (Aaronvron intermedium) <br />( 2) Siberian Wheatgrass (Agropkron sibericum) <br />( 3) Pubescent Wheatgrass (A~rogyron tricho~horum) <br />( 4) Smooth Brome ( r m s inermus) <br />( 5) Orchard Grass (Dactylus ~lomerata) <br />( 6) Vinall Russian Wildrye (Elymus junceus) <br />( 7) Durar Hard Fescue (Festuca ovina duriscula) <br />( 8) Timothy (Phleum oratense) <br />( 9) Kentucky Bluegrass (PO~3 pratensis) <br />(10) Lutana Cicer Milkvetch (Astragalus cicer) <br />(11) Blue Flax (Li m lewisii) <br />(12) Alfalfa (Medicago a iva) <br />Of the 31 species approved, 19 species are native. On a seed weight <br />basis, 65% of the seeds to be planted are native species seed. <br />The introduced species are included in the mixture because they are <br />necessary to control erosion and because they will provide forage for <br />wildlife and livestock on the reclaimed area. The research at Colowyo <br />by the Colorado State University (CSU), Agronomy Department has <br />documented the superiority of the introduced species for revegetation <br />purposes compared with other species under similar conditions. The CSU <br />study and two progress reports are set forth in Exhibit 10, Vegetation <br />Information. None of the introduced species are poisonous or noxious. <br />For further discussion of the value of introduced species for obtaining <br />the desired post-mining vegetative community of the same seasonal variety <br />and lifeform of the pre-mined area, refer to Section 2.05. <br /> <br />Aev'siort Submitted s -) ~' - 9 9 <br />Fittvlsbn No. T t~ - `I ~ <br />4.15-2 <br />