This environmental assessment (EA) incorporates by reference, and is tiered to, the Cody Resource Management Plan (USDI, BLM 1990) and the Washakie Resource Management Plan (USDI, BLM 1988). This EA also incorporates by reference the Final Environmental Impact Statement Grass Creek Planning Area [Proposed] Resource Management Plan (USDI, BLM 1996). These documents contain descriptions of the affected environment and two RMPs also provide general management prescriptions for their respective planning areas.