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DATA ANALYSIS • At the Chimney Rock Mine, three vegetation communities will be reclaimed including dryland pasture, irrigated pasture, and rangeland/wildlife habitat. The following discussion provides a description of each community with the revegetation success criteria. The Vegetation Map (Map 2 of the permit) has been revised to reflect these communities and Table 1 presents a summary of the revegetation standards. All data which has been used in this analysis are contained in the appendices of this document. Data collected during 1990 for the proposed reference areas are presented in Appendix 1. Data collected on the East Pit reclaimed area during 1958 are contained in Appendix 2. Additional data collected on the East Pit reclaimed area during 1957 are contained in Appendix 3. Data collected on the irrigated pasture are contained in Appendix 4. SPECIES DIVERSITY Using the CMLRD-recommended method, the reclamation success standard for species diversity in the dryland pasture will be establishment of 2 cool season grasses, 1 warm season grass, and 1 perennial forbs. In addition, eaclt of these species must have a relative cover value between 3 percent and 60 percent. Seed mixes for the dryland pasture are provided in Table 2. The rangeland/wildlife habitat will have the same diversity standard as the • dryland pasture. Seed mixes for the rangeland/wildlife habitat are provided in Table 3. For the irrigated pasture, the reclamation standard will be establishment of 3 cool season grasses and 1 perennial forb. Again, each species most have a relative cover value between 3 percent and 40 percent. The seed mix for the irrigated pasture is provided in Table 4. The mix was determined using sampling data collected in the irrigated pasture area. VEGETATIVE COVER The vegetative cover standard will be the same for all of the reclaimed vegetation types. However, it will be calculated using the applicable reference area. The vegetative cover standard for a reclaimed area will be 90 percent of the reference area as sampled at the time of revegetation success analysis (see Table 1). PRODUCTION The production standard will also be the same for all of the reclaimed vegetation types. Again, the standard will be determined using the reference areas. Production will be 90 percent of the reference area at the time of revegetation success analysis (see Table 1). . 4