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FROM GREG-LEWICKI FRX N0. 3036299335 Jun. 12 2001 02:20PM P2 <br />Proposed Revised Veget atio n Su ccess Criteria <br />As pointed out in the Matt Hayes letter, the acreage of the upper portal bench area to be studied <br />for revegetation - 1.21 acres, and the yard area - 2.36 acres, is so small that it is not possible to <br />accurately divide consider them as sepazate sample azeas. For this reason, the new standazd will <br />apply to both azeas. <br />The rule under which this application is made to change the standazd is Rule 4.15.7 (d)(ii). Lu this <br />instance, the technical document upon which the standards would be based would be Mr. Davey's <br />letter recommending changes in the standards. <br />Herbaceous Cover: 42% <br />Herbaceous Productivity: 900 lbs/a«e <br />Species Diversity: see below: <br />Using relative cover or production values for each species, the reclaimed areas will have at least <br />3 perennial species with relative importance equal to or greater than 3%,. but with a113 pcren~tial <br />species combined not to exceed 80% in relative importance. Any one of the 3 species cannot <br />exceed 55°!o in relative importance. Relative importance means the % cover of the perennial <br />species will be compared to the % cover of all species except noxious weeds. <br />The basis for the change in species diversity standazd is given is the second Matt Hayes letter <br />enclosed in this section. <br />Shrub Density: <br />The landowner has requested that no shrubs-be planted on the reclaimed area. Since he has <br />requested this and the post-mining land use of grazing/wildlife habitat will be enhanced by an <br />open area, no further woody plant density information is needed. The adjacent area is <br />characterized by dense shrub communities which will provide sufficient cover and edge effect for <br />wildlife. The reclaimed area will provide herbaceous forage with preferred browse species. <br />Determining Revegetation Success <br />Quantitative Sarr~pling -General: <br />There is no reference area to be used in a success comparison. The entire site is <br />included as one unit. Reclaimed parameter values will be compared against technical <br />standards. A SU x SU ft. grid was drawn over the ACRD site map. Each point of the grid <br />