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RULE 4 PERFORMANCE STANDARDS <br />c) A total of all forbs or all shrubs combined with between 4% and 50% relative cover <br />(composition), or <br />d) If five or more native* cool season perennial grass taxa contribute between 3% and 50% <br />composition, the requirement for perennial forbs and shrubs shall be limited to 1% or more <br />relative cover combined. <br />For areas targeting the wildlife habitat subcomponent of the Rangeland Land Use (Post -2008 <br />reclamation). <br />At least four native* perennial species, each more than 3% composition, minimum of two of which are <br />grasses and a minimum of one which is a forb, with the following caveat; <br />If no single forb species exceeds 3% composition, the forb requirement can be met if: <br />a) at least two native* perennial forbs combined comprise at least 2% composition, or; <br />b) at least four native* perennial forbs combined comprise at least 1% composition. <br />The dominant species will contribute to the appropriate structure and stability of the postmining <br />vegetative community to insure that the postmining land use as addressed in Section 4.16, Post -mining <br />Land Use, will be sustained. <br />The seed mixture in Section 2.05 on Table 7, Reclamation Seed Mixture, or MR -59 dated 9/10/02) or <br />other approved seed mixtures contains the desired species to achieve the goal of species diversity in the <br />postmining area. These mixtures contain grasses, forbs and shrubs capable of establishing vegetative <br />communities that are capable of supporting the desired postmining land use. <br />4.15.9 Revegetation Success Criteria: Cropland <br />Colowyo does not plan to return any of the mined area for use as cropland; therefore, the requirements of <br />this Subsection are not applicable to Colowyo. <br />4.15.10 Revegetation Success Criteria: Previously Mined Areas: Areas to be Developed for <br />Industrial or Residential Use <br />Colowyo does not plan to develop any areas to industrial or residential use; therefore, the requirements of <br />this Subsection are not applicable to Colowyo. <br />4.15.11 Revegetation Sampling Methods and Statistical Demonstrations for Revegetation Success <br />Revegetation Community Mapping / Stratification <br />Unless new, CDRMS approved, and superior monitoring and sampling metrics are developed, the <br />following metrics will be implemented at Colowyo to document revegetation progress and success. <br />During monitoring of revegetated units, developing shrub patches will be identified and as necessary <br />delineated (circumnavigated with a sub -meter GPS unit to document boundaries) to facilitate mapping <br />that in turn will represent the juxtaposition (stratification) of developing communities. As indicated <br />previously, delineated shrub patches will be classified as either "core" areas or "ecotonal" areas <br />Rule 4 Performance Standards 4-67 Revision Date: 1/31/18 <br />Revision No.: TR -119 <br />