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ITHE FOLLOWING WILL BE APPENDED TO THE END OF SECTION V.1.4.i FOLLOWING OR <br />CONCURRENT WITH THE PERMIT RENEWALI <br />During the summer of 1999 several problems were observed with the revegetation of Refuse <br />Area #l. First, Cheatgrass had again become a dominant invader on portions of the site. <br />Second, in areas with substantial perennial vegetation the plant community is composed of an <br />overwhelming dominance of grasses. The following plan is designed to help address both issues. <br />During the late winter /early spring of 2000, once the ground is thawed and active growth is <br />observed, approximately two acres of Refuse Area #1 will be sprayed to control Cheatgrass on <br />select areas dominated by this species. In no case will the treatment cover more than 2.8 acres <br />(20%) of the 14.07 acres of this site. The herbicides that will be used are Roundup Pro and Oust. <br />Each will be applied sepaza[ely. Roundup Pro will be the herbicide primarily used. Oust will be <br />used on an experimental basis since only limited information is available concerning its effects <br />on seedling establishment. <br />Roundup Pro will be applied at a rate of one pint per acre in a manner consistent with its <br />labeling. This low rate is intended to control Cheatgrass while minimizing the effects on <br />perennial vegetation. <br />Oust will be applied at a rate of 0.5 to 0.75 ounces per acre. Use of Oust will be limited to a <br />maximum of 0.5 acres for the purpose of this treatment. The primary concern with use of Oust is <br />its potential adverse effects on the reseeding soon after treatment. The label and Dupont <br />literature recommend waiting 90 to 160 days following treatment before planting grasses <br />depending on species. No such recommendations exist for forb and shrub plantings. The areas <br />treated with Oust will be considered experimental in nature with subsequent fall reseeding if <br />adequate seedlings do not survive. <br />Approximately one week following herbicide application the treated areas will be broadcast <br />seeded and harrowed. The proposed seed mix will be strongly dominated by forbs and shrubs. <br />Table V.13a shows the proposed seed mix. Larger seeded species will be seeded prior to <br />harrowing to allow deeper soil coverage than the smaller seeded species that will be seeded <br />following harrowing. In the event that seedlings do not become adequately established on the <br />Oust treated portions a fall seeding will also occur. <br />The boundaries of the treated areas will be cleazly mazked for future reference. A detailed <br />description of the actual treatment(s) will be included in the 2000 Annual Reclamation Report. <br />