The government document delineates the boundaries of a designated area in Rio Rico, Arizona, primarily overseen by the Fish and Wildlife Service. The northern boundary is defined by the vicinity of Rio Rico, AZ, with Nogales, AZ marking the eastern and southwestern edges, while the US-Mexico border serves as the southern limit. This geographic outline is crucial for identifying specific regions pertinent to federal initiatives, likely tied to wildlife conservation or habitat protection efforts. Such delineated areas are often essential in federal grants and Requests for Proposals (RFPs), as they clarify the scope for funding applications and project implementation, illustrating the government's commitment to managing and preserving sensitive environmental areas. The document’s structure is straightforward, providing clear geographical references necessary for stakeholders involved in conservation projects within this designated zone.