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RULE 4 PERFORMANCE STANDARDS <br /> <br />Rule 4 Performance Standards 4-44 Revision Date: 4/9/25 <br /> Revision No.: MR-261 <br />previously. Tall shrubs plots will consist of, but may not contain all, of the following species to <br />be considered successful. <br /> <br /> Alderleaf Mountain Mahogany (Cercocarpus montanus) <br /> Chokecherry (Padus virginiana ssp. melanocarpa) <br /> Skunkbrush sumac (Rhus trilobata) <br /> Saskatoon serviceberry (Amelanchier alnifolia) <br /> Snowberry (Symphoricarpos sp.) <br /> <br />For the Collom reclamation areas, at the request of CPW, Colowyo will incorporate approximately <br />750 small size exclosures into Collom reclamation areas on 150 acres at a density of approximately <br />five exclosures per acre to meet their expectations for establishing tall shrub species. <br /> <br />Diversity <br />The revegetation objective for diversity will be to establish at least four native* perennial species, <br />each more than 3% composition, minimum of two of which are grasses and a minimum of one <br />which is a forb, with the following caveat; <br /> <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 /> <br />The dominant species will contribute to the appropriate structure and stability of the post-mining <br />vegetative community to insure that the post-mining land use as addressed in Section 2.05.5. <br /> <br />4.15.9 Revegetation Success Criteria: Cropland <br /> <br />Colowyo does not impact any cropland areas; therefore, the requirements of this rule are not <br />applicable to Colowyo. <br /> <br />4.15.10 Revegetation Success Criteria: Previously Mined Areas: Areas to be Developed for <br />Industrial or Residential Use <br /> <br />Colowyo does not plan to develop any areas to industrial or residential use; therefore, the <br />requirements of this rule are not applicable to Colowyo. <br /> <br />4.15.11 Revegetation Sampling Methods and Statistical Demonstrations for Revegetation <br />Success Revegetation <br /> <br />During monitoring of revegetated units, developing shrub patches will be identified and as <br />necessary delineated to facilitate mapping that in turn will represent the juxtaposition <br />(stratification) of developing communities. As indicated previously, delineated shrub patches will <br />be classified as either low or high density areas depending on apparent density of developing shrub <br />populations. <br /> <br />Sample Layout