State & Local Air Compliance Authorities
State and local authorities have the primary responsibility to protect the quality of our air in the Northwest and to ensure compliance with requirements.
EPA Air Quality Policies
National Policies issued by the EPA for the enforcement of the Clean Air Act.
Components of the Enforcement Program
Information about the Region 10 Air Enforcement Program, including compliance assistance and monitoring.
Region 10 Enforcement: general information about EPA's Region 10 compliance and enforcement program
Enforcement and Compliance History Online (ECHO): general information on the compliance status of facilities near you