Book excerpt: This Final Environmental Impact Statement (Final EIS) analyzes impacts related to mining phosphate ore at the proposed Rasmussen Valley Mine in Southeastern Idaho. The Proposed Action includes developing six mine pits, haul roads, water management structures, and overburden disposal areas. Use of the existing fertilizer plant would continue in Soda Springs. Alternatives to the Proposed Action are also analyzed and site-specific mitigation measures developed. The BLM and USFS Preferred Alternative is the Rasmussen Collaborative Alternative (RCA) because of reduced impacts compared to the Proposed Action based on revisions to overburden storage, the haul road, eliminating all impacts to wetlands, and an earthen cover design that would reduce water impacts.