FR Daily: Day 20

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

Proposed Implementation Requirements for Reduction of Sulfur Oxide (Sulfur Dioxide) Emissions
Clean Air Act Approval and Promulgation of State Implementation Plan; Colorado; Prevention of Significant Deterioration; Designation of Areas for Air Quality Planning Purposes
Approval and Promulgation of Implementation Plans; State of Nebraska
Approval and Promulgation of Implementation Plans: Washington State
Approval and Promulgation of State Implementation Plans: Washington
Approval and Promulgation of State Implementation Plan; Michigan
Clean Air Act Approval and Promulgation of State Implementation Plan; Colorado; Prevention of Significant Deterioration; Designation of Areas for Air Quality Planning Purposes