Alternative B would be the most effective for protecting the paleontological and geologic values of concern in the Rainbow Canyon area. This alternative also would result in the greatest restrictions on mineral development, ROW authorizations, and other surface-disturbing activities; livestock grazing; and the excavation of paleontological resources. Alternatives A and C would allow mineral development and would be less restrictive to the authorization of ROWs and surface disturbance in areas with paleontological resources than Alternative B. Alternative C would be the least restrictive for oil and gas development and ROW authorizations, and may therefore result in the greatest potential for adverse impacts to the values of concern from surface disturbance due to these threats. Alternative D manages mineral development similar to alternatives A and C and ROW authorizations similar to Alternative B.