Confederated Tribes of the Chehalis Reservation Environmental Site Assessments
Terraphase has provided environmental assessment services to the Confederated Tribes of the Chehalis Reservation in Washington state to support land acquisition, Fee-to-Trust property transfers, and economic development initiatives. These efforts have played a key role in advancing both high-profile and community-focused tribal development projects.
Scope of Services
Terraphase’s work includes Phase I Environmental Site Assessments (ESAs) for pre-acquisition due diligence, environmental risk opinions, and Environmental Assessments (EAs) conducted under the National Environmental Policy Act (NEPA). Our services have supported commercial development, residential land purchases, and acquisition of floodplain and environmentally sensitive lands. These projects have required coordination with engineering teams, adherence to tight timelines, and management of public input and comment processes.
Notable Accomplishments
- Completed EAs for notable Eagle 2, 3, and 4 developments and Great Wolf Lodge hotel and water park projects
- Delivered EAs for the new Elder’s Center, and wastewater system improvement projects, and treatment clinic projects
- Provided updated EA for a substance abuse treatment clinic
- Completed Phase I ESA for riverine habitat and acquisition
Puyallup Tribe of Indians Environmental Site Assessments
Under an on-call contract with the Puyallup Tribe of Indians in Washington state, Terraphase has provided environmental consulting and site assessment services for over 100 properties undergoing Fee-to-Trust transfer as part of long-term development initiatives. These efforts support infrastructure, housing, and facility construction projects for tribal clients, ensuring compliance with federal and tribal environmental requirements.
Scope of Services
Terraphase has completed Environmental Assessments (EAs) under the National Environmental Policy Act (NEPA) and provided technical assistance with Tribal Environmental Policy Act (TEPA) documentation. Our work involved close coordination with the U.S. Department of the Interior, Bureau of Indian Affairs (BIA), and local stakeholders to address environmental issues associated with Fee-to-Trust acquisitions. Projects our team supported also included cultural resources assessments, due diligence for property acquisition, and remedial investigations.
Notable Accomplishments
- Completed NEPA/TEPA reviews for 100+ Fee-to-Trust properties
- Delivered EAs for the Puyallup Tribe of Indians Justice Center, Emerald Queen Casino and Hotel, and Grandview Avenue reconstruction
- Completed evaluations for the Youth Center and Chief Leschi ballfield/stadium projects
- Completed EAs for U.S. Department of Housing and Urban Development (HUD)-funded housing
- Conducted a remedial investigation for a waterfront property acquisition now developed as a world-class restaurant
North Fork Rancheria HUD Environmental Assessment
For over a decade, Terraphase has supported the North Fork Rancheria of Mono Indians (Tribe) in California by completing Housing and Urban Development (HUD) Environmental Assessments (EAs) for a variety of community development projects. This long-standing partnership reflects our deep understanding of HUD regulatory processes and commitment to culturally sensitive, community-focused environmental planning.
Scope of Services
In one of the Tribe’s recent initiatives, Terraphase completed a HUD EA for the construction of a 4,270-square-foot facility adjacent to the Tribe’s Wellness Center at the North Fork Mill Site. Designed to house the Tribe’s Information Technology Department, the building served as a technology hub supporting digital equity and inclusion programs, education, and cultural preservation. Funded under HUD’s Indian Community Development Block Grant, the project required an EA to be developed by the Tribe as the responsible entity under 24 CFR 58.
Terraphase assessed the environmental impacts and incorporated mitigation measures for previously unidentified cultural resources and migratory birds related to tree removal. The EA concluded the project would not result in a significant impact on the quality of the human environment, supporting a Finding of No Significant Impact (FONSI).
Notable Accomplishments
- Over a decade of HUD EA support
- Ensured compliance with 24 CFR 58
- Identified and incorporated mitigation measures for cultural resources and migratory birds
- Supported a FONSI, enabling project advancement
