Tribal Services
Tribal communities face unique environmental challenges that require culturally sensitive, locally informed and technically advanced solutions. Our team brings decades of experience working directly with Tribal communities across the country to advance housing, economic development and fee-to-trust projects.
Each Tribal governance is rooted in sovereignty and shaped by diverse decision-making structures. Onterris partners with Tribal governments and organizations to deliver environmental services that respect sovereignty, support sustainable development and ensure regulatory compliance.
Each Tribal governance is rooted in sovereignty and shaped by diverse decision-making structures. Onterris partners with Tribal governments and organizations to deliver environmental services that respect sovereignty, support sustainable development and ensure regulatory compliance.
Industries and sectors we support
Onterrris provides comprehensive and integrated services to meet the unique requirements of Tribal Nations.
Advancing sovereignty with confidence
Project locations
Through established relationships with the U.S.Bureau of Indian Affairs and other agencies, our team has supported Tribal projects and navigated complex regulatory environments for more than 25 years.
Clear science
Onterris prepares comprehensive and defensible environmental compliance documents, including those required under the National Environmental Policy Act (NEPA), Tribal environmental regulations, state laws and agency-specific technical requirements. With thousands of NEPA and related documents completed nationwide, we anticipate challenges and deliver high-quality studies tailored to geographic, cultural and regulatory contexts.
Real partnership
Working as a collaborative long-term partner, not just a transactional advisor, we combine cultural respect, systems thinking and practical experience. We aim to bring clarity and confidence to our shared goals. This builds momentum and advances Tribal priorities. Our approach is informed by a deep understanding of Tribal self-determination and the environmental concerns unique to each community.
Funding strategies
Our team of funding specialists partner with Tribes to secure and leverage funding. These funds can be used to build and strengthen Tribal environmental restoration and resiliency programs, quality housing, infrastructure improvements, economic development, resource management, waste management, and preservation of cultural heritage. Once funding is secured, Onterris can be your trusted partner for grant management/administration, reporting, and regulatory compliance.
Project types supported
Fee-To-Trust Support
Casino
Housing
Commercial
Recreational
Restoration
Remediation
Agricultural
Planning Documents
Energy Sovereignty
Transportation
Solid Waste
Water Supply
Wastewater
Emergency Response
Disaster Recovery
Solutions and capabilities
Success stories
See how we partner with Tribal communities.
Our Thinking
Critical Minerals, Strategic Alliances and the Race to Build Responsible Supply Chains
U.S., Canadian and Australian collaboration will determine how fast essential materials reach global markets
Employee Spotlight
Preserving The Past While Building the Future
For archaeologist Gabriel Robles, Catalina Island, California, is home and a landscape rich with thousands of years of cultural history. See how he works alongside project teams, tribal groups and the City of Avalon to protect cultural resources while helping essential infrastructure move forward responsibly.
Our Thinking
Accelerating Brownfield Readiness Across Remote Former Defense Sites
Grant strategy and field execution advanced cleanup planning for World War II legacy contamination on Alaska Native Corporation lands
Meet the experts
