Laws & Regulations

Sulfur Dioxide (SO2) Designations Round 4: Virginia State Recommendation and EPA Response

Virginia recommendation for Round 4 area designations and EPA's response.

Sulfur Dioxide (SO2) Designations Round 4: Washington State Recommendation and EPA Response

Washington recommendation for Round 4 area designations and EPA's response.

Sulfur Dioxide (SO2) Designations Round 4: West Virginia State Recommendation and EPA Response

West Virginia recommendation for Round 4 area designations and EPA's response.

Sulfur Dioxide (SO2) Designations Round 4: Wyoming State Recommendation and EPA Response

Wyoming recommendation for Round 4 area designations and EPA's response.

Sulfur Dioxide (SO2) Designations Round 4: Wisconsin State Recommendation and EPA Response

Wisconsin recommendation for Round 4 area designations and EPA's response.

Sulfur Dioxide (SO2) Designations Round 4: North Dakota State Recommendation and EPA Response

North Dakota recommendation for Round 4 area designations and EPA's response.

Air Quality Designations for Lead

This area provides information on the process EPA, the states, and the tribes follow to designate areas as attainment (meeting) or nonattainment (not meeting) the lead air quality standards.

Air Quality Designations for Particle Pollution

This area provides information on the process EPA, the states, and the tribes follow to designate areas as attainment (meeting) or nonattainment (not meeting) the particle pollution air quality standards.

Air Quality Designations for Sulfur Dioxide

This area provides information on the process EPA, the states, and the tribes follow to designate areas as attainment (meeting) or nonattainment (not meeting) the sulfur dioxide air quality standards.