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elimination of the woody stem density standard for the reclamation of the mine site. <br />The Division has approved these techniques (4.15.7(1)). <br />4. Species diversity will be determined successful for bond release areas greater than <br />10 acres when at least four perennial species have a relative cover between 3% and <br />60 %. Of the four species at least one will be a forb or shrub, and applicable <br />perennial grasses will be cool - season species. Species diversity for areas less than <br />10 acres will be determined successful when at least three perennial species will <br />have a relative cover between 1% and 60 %. Of the three species, at least one will be <br />a forb or shrub, and applicable grasses will be cool- season species. <br />Comparisons between reclaimed and undisturbed areas, in order to demonstrate that <br />the success criteria of 4.15.8, 4.15.9, or 4.15. 10 have been met, will be based on the <br />following: <br />1) Comparison of cover and production on most revegetated areas with reference <br />areas established during the baseline vegetation study. <br />2) Standards for the small riparian community at the lower Hubbard Creek site <br />which include 44.3 percent cover and 1,784 pounds per acre. The diversity <br />standard for the riparian community will be as follows: The plant community <br />shall contain a minimum of one cool - season, sod forming grass and three cool - <br />season bunch grasses with each species having a minimum of five percent <br />cover. <br />The Division has approved these comparisons and standards. <br />6. The Division proposes to approve of the reference areas, which the applicant has <br />selected based on the requirements of Rule 4.15.7(3). <br />7. The reference areas will be utilized to determine revegetation success in a manner which <br />the Division finds acceptable 4.15.7(4)). <br />IX Protection of Fish, Wildlife and Related Environmental Values <br />Fish and wildlife habitat is a planned post - mining land use. The applicant has <br />selected appropriate plant species and distributions to benefit fish and wildlife <br />(4.18(4)(i)). <br />X. Subsidence Control <br />The permit area includes three different mines which have been active through the <br />term of the permit to date: the Somerset Mine, the Sanborn Creek Mine, and the Elk <br />Creek Mine. These underlie different areas and, therefore, have had separate <br />requirements for subsidence monitoring and control. <br />26 <br />