The Environmental Protection Agency (EPA) is promulgating a direct final, source-specific Federal Implementation Plan (FIP) to regulate emissions from a proposed gas-to-energy project at the Tri- Cities landfill. This facility is located on the reservation of the Salt River Pima-Maricopa Indian Community (SRPMIC), within the Phoenix area designated by EPA as nonattainment for CO, PM-10, and ozone. This facility will be owned and operated by the Salt River Project (SRP) under the terms of an agreement and lease entered into with the SRPMIC.