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<br />This mix was developed in an effort to provide the genetic <br />plant material which over time will produce a similar vegetative <br />structure as identified in premining vegetation studies (Appendix <br />F) . <br />When the permit was renewed the seed raix was revised as <br />follows: <br />CANADIAN STRIP MINE <br />SEED MIX <br />1 <br />Seed mix is as follows: <br />Thickspike wheatgrass, Critana <br />Western wheatgrass, Arriba <br />Green needlegrass <br />Slender wheatgrass <br />Beardless wheatgrass, Whitman <br />Pubescent wheatgrass, Luna <br />Big bluegrass, Sherman <br />Canadian bluegrass, Ruebens _ <br />Rocky Mountain Penstomen <br />Lewis flax <br />Yarrow <br />Cicer milk vetch, Lutana <br />Mountain big sagebrush <br />Rubber rabbitbrush <br />Winterfat <br />Rate in PLS <br />lbs acre <br />3.00 <br />6.00 <br />0.50 <br />6.00 <br />3.00 <br />2.00 <br />2.00 <br />2.00 <br />0.25 <br />0.25 <br />0.25 <br />1.00 <br />0.25 <br />0.25 <br />2.00 <br />28.75 <br />This mix was used on the 1987 reclaimed area and is the presently <br />approved permanent seed mix. <br />Premining diversity estimates (Figure 4F, Appendix F) <br />illustrates that 6 species contributed 76 percent of the total <br />diversity. <br />-63- (Revised April 13, 1990) <br />i <br />