EPA Region 10

EPA Region 10
Name	Environmental Protection Agency Region 10
Caption	EPA Region 10 offices and jurisdictional map
Formation	1970
Headquarters	Seattle, Washington
Region served	Alaska, Idaho, Oregon, Washington, and parts of the Pacific Islands
Parent organization	United States Environmental Protection Agency

EPA Region 10

EPA Region 10 is the Pacific Northwest regional office of the United States Environmental Protection Agency, serving a five-state and insular area in the northwestern Pacific. The region implements Clean Air Act, Clean Water Act, Comprehensive Environmental Response, Compensation, and Liability Act programs and enforces federal environmental statutes across diverse ecosystems, tribal lands, and metropolitan centers. Region 10 works with federal agencies such as the National Oceanic and Atmospheric Administration, United States Fish and Wildlife Service, and Bureau of Land Management, as well as state agencies including the Washington State Department of Ecology, Oregon Department of Environmental Quality, Idaho Department of Environmental Quality, and Alaska Department of Environmental Conservation.

Overview

Region 10 administers federal environmental policy and regulatory programs in a geographically expansive area that includes temperate rainforests, the Columbia River, the Cascade Range, the Alaska Range, coastal estuaries, and remote Pacific islands. The office coordinates with tribal governments such as the Tulalip Tribes, Yakama Nation, Aleutian Pribilof Islands Association, and Confederated Tribes of the Umatilla Indian Reservation on sovereign environmental authorities and Indian Self-Determination and Education Assistance Act-related agreements. Region 10 interacts with metropolitan regions like Seattle, Portland, Oregon, Anchorage, Alaska, and rural communities reliant on fisheries, timber, and tourism industries represented by entities such as the Pacific Northwest Economic Region.

Jurisdiction and Member States

Region 10's primary jurisdiction encompasses the states of Alaska, Idaho, Oregon, and Washington, along with American insular areas including the Commonwealth of the Northern Mariana Islands and advisory roles in parts of the Republic of the Marshall Islands and Federated States of Micronesia through Compact arrangements. Within these boundaries, the region interfaces with state environmental agencies, municipal governments like the City of Seattle, port authorities such as the Port of Seattle and Port of Portland, federal land managers including the National Park Service and United States Forest Service, and internationally relevant bodies like the International Pacific Halibut Commission on transboundary resource issues.

Organizational Structure and Leadership

Region 10 is led by a Regional Administrator appointed by the President of the United States and confirmed with oversight from the United States Environmental Protection Agency. The regional office contains divisions focused on Air Program, Water Division, Cleanup and Emergency Response, Enforcement, and Prevention, and includes specialized offices for Tribal Affairs, Environmental Justice, and Science and Technology. Region 10 collaborates with federal partner offices such as the Department of the Interior, Department of Defense, and Department of Agriculture on cross-cutting missions. Leadership has engaged with national initiatives led by figures like the Administrator of the Environmental Protection Agency and participates in interagency counsels such as the Northwest Power and Conservation Council on regional planning.

Programs and Priorities

Region 10 implements core programs under statutes including the Safe Drinking Water Act and Resource Conservation and Recovery Act, prioritizing enforcement in metropolitan and industrial sites such as ports, refineries, and mining operations like those associated with the historic Kennecott Mines and modern extraction oversight. The region emphasizes watershed restoration for systems including the Lower Columbia River and the Puget Sound recovery, hazardous waste cleanup at Superfund sites like Lower Duwamish Waterway and Portland Harbor Superfund, air quality management in urban corridors, and protection of marine mammals regulated under the Marine Mammal Protection Act by coordinating with National Marine Fisheries Service. Programs address climate resilience, renewable energy siting, and contamination responses in cold-climate and coastal contexts.

Notable Initiatives and Actions

Region 10 has led high-profile Superfund actions and settlements, collaborated on salmon recovery with the Bonneville Power Administration and Northwest Power Planning Council predecessors, and supported tribal capacity-building via grants under the Clean Water Act and Indian Environmental General Assistance Program. The office has advanced initiatives on per- and polyfluoroalkyl substances (PFAS) in drinking water, partnering with state laboratories and federal research bodies like the Environmental Protection Agency Office of Research and Development and Centers for Disease Control and Prevention. Region 10 has enforced emissions rules against industrial facilities, negotiated corrective actions with corporations including energy and manufacturing firms, and coordinated disaster response with the Federal Emergency Management Agency after oil spills and chemical releases in coastal and inland waters.

History and Milestones

Since its establishment following the 1970 creation of the Environmental Protection Agency, the regional office has evolved through landmark federal actions such as enforcement of the National Environmental Policy Act and implementation of amendments to the Clean Air Act in 1990. Milestones include major Superfund remediations, the incorporation of tribal treatment as sovereign partners in the 1980s and 1990s, and leadership in watershed-based recovery plans for the Columbia River Basin. Region 10’s historical record intersects with notable events and cases involving entities like the City of Tacoma, Ketchikan Gateway Borough, and industrial sites that prompted litigation in federal courts including the United States Court of Appeals for the Ninth Circuit. Ongoing developments reflect evolving national policy set by successive administrations and statutes such as the Consolidated Appropriations Act affecting funding for regional environmental programs.

Category:United States Environmental Protection Agency regional offices