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Day 15
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
- Federal Implementation Plans Under the Clean Air Act for Indian Reservations in Idaho, Oregon and Washington [HTML] or [PDF]
- National Primary and Secondary Ambient Air Quality Standards
- Approval and Promulgation of State Implementation Plans; Indiana
- Proposed Finding of Failure To Attain; State of California, San Joaquin Valley Nonattainment Area
- Approval of Operating Permit Program; State of Iowa
- Full Approval of Operating Permit Program; State of Connecticut
AIR TEXT Files - [ZIP 147kb] - National Primary and Secondary Ambient Air Quality Standards