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FR Air Documents
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
- Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Determination of Attainment of Fine Particle Standard | PDF Version (55K, About PDF)
- Approval and Promulgation of Implementation Plans and Operating Permits Program; State of Iowa
- Approval and Promulgation of Implementation Plans and Operating Permits Program; State of Iowa | PDF Version (78K, About PDF)