The property is is an approximately 335-acre parcel surrounding Hawley Lake in McNary, Apache County, Arizona and contains 129 cabins in an outdoor recreation area on the White Mountain Apache Indian Reservation. The property is bounded by Fort Apache Reservation rangeland and U.S. Forest Service land in all directions. Based on available historical documentation, the property was vacant before being developed in the 1960s with 482 recreational and residential use cabins. The cabins were initially built by non-residents who leased the land from the White Mountain Apache Tribe. When the leases expired between 1984 and 2001, the cabins were to be donated to the White Mountain Apache Tribe; however, some owners destroyed or moved their cabins before vacating. Many cabins were left inaccessible due to debris in the interior or because they were nailed/screwed shut. As of 2002, 68 of the cabins are actively used for rentals. An assessment for hazardous building materials was performed in November 2019 on nine cabins in Section C of the Hawley Lake Cabin area and identified asbestos-containing material (ACM) in four cabins (cabins C-20, C-18, C-17, and C-7). A Phase I Environmental Site Assessment (ESA) and Phase II ESA was performed on 34 cabins in Section B (as well as cabins A-25X, A-52, A-55) in June 2021 and February 2022, respectively, and identified one recognized environmental condition (REC) and four business environmental risks (BERs). Based on when the cabins were constructed (1960s), lead-based paint (LBP) was possibly used during initial construction and may have led to the presence of lead contamination in the soil along roof drip lines from externally applied LBP, which is a REC to the property. Based on when the cabins were constructed (1960s), LBP was possibly used during initial construction and may be present on internal walls and other internal painted surfaces, which poses an environmental concern to the property. Based on when the cabins were constructed (1960s), ACM was possibly used during initial construction and may be present within the building materials, which is an environmental concern to the property. During the on-site walk-through, water staining and potential mold growth were observed inside multiple cabins, which is an environmental concern to the property. During the on-site walk-through, animal nests and droppings were observed inside multiple cabins, which is an environmental concern to the property. The Phase II ESA performed in February 2022, identified ACM, LBP, and mold in multiple cabins, and lead in soil along one roof drip line (cabin B-43). A Phase I ESA and Phase II ESA was performed on 49 cabins, in Sections A, B, and C to the north, east, and south of Hawley Lake, in November 2022 and identified the same REC and four BERs as the June 2021 Phase I ESA. A Phase II ESA performed in November 2022, identified LBP and ACM in building materials in several cabins; polychlorinated biphenyl (PCB)-containing caulk in one cabin (cabin A-68); mold in indoor air and on building materials at several cabins; and lead in the soil along one roof drip line (cabin A-75). The redevelopment plan for the property is to repair, remodel, or demolish the existing cabins for residential or recreational uses. Surface soils that contain elevated lead concentrations could require removal or capping to prevent exposure or release and to mitigate potential impacts to human health if the property is designated for residential and recreational use. Additionally, if soils are to be excavated for off-site disposal, waste disposal testing is recommended. Abatement of building materials containing ACM and LBP and the removal of mold-affected material is recommended before any building renovation or demolition activities. If buildings are renovated for reuse or demolished, a licensed abatement professional should remove and properly dispose of building materials that contain LBP. In the interim, these materials should be