2010-11-29_PERMIT FILE - C1981019A

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Section 4.16, Post - mining Land Use, will be sustained. The seed mixture in Section 2.05 on Table 7, Reclamation Seed Mixture, or MR -59 dated 9/10/02) or other approved seed mixtures contains the desired species to achieve .the goal of species diversity in the postmining area. These mixtures contain grasses, forbs and shrubs capable of establishing vegetative communities that are capable of supporting the desired postmining land use. 4.15.9 Revegetation Success Criteria: Cropland Colowyo does not plan to return any of the mined area for use as cropland; therefore, the requirements of this Subsection are not applicable to Colowyo. 4.15. 10 Revegetation Success Criteria: Previously Mined Areas: Areas to be Developed for Industrial or Residential Use Colowyo does not plan to develop any areas to industrial or residential use; therefore, the requirements of this Subsection are not applicable to Colowyo. 4.15.11 REVEGETATION SAMPLING METHODS AND STATISTICAL DEMONSTRATIONS FOR REVEGETATION SUCCESS REVEGETATION COMMUNITY MAPPING / STRATIFICATION Unless new, CDRMS approved, and superior monitoring and sampling metrics are developed, the following metrics will be implemented at Colowyo to document revegetation progress and success. During monitoring of revegetated units, developing shrub patches will be identified and as necessary delineated (circumnavigated with a sub -meter GPS unit to document boundaries) to facilitate mapping that in turn will represent the juxtaposition (stratification) of developing communities. As indicated previously, delineated shrub patches will be classified as either "core" areas or "ecotonal" areas depending on apparent density of developing shrub populations. Such stratification is necessary as success criteria associated with areas of wildlife habitat will be applicable to shrub - dominated communities as opposed to grassland success criteria applicable to remaining revegetation efforts targeting livestock grazing land uses. Sample Layout The sample layout protocol for revegetation monitoring and bond release evaluations shall be a systematic procedure designed to better account for the heterogeneous expression of seedings within reclaimed areas while precluding bias in the sample site selection process. By design, the procedure is initiated randomly, and thereafter, samples are located in a systematic manner, along grid coordinates spaced at fixed distances, e.g. 200 ft. In this manner, "representation" from across the target reclamation unit is 4.15 -28 Revision Date: 3/14/08 Revision No.: TR -72