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Related Material
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
- Transportation Conformity Rule Amendments: Flexibility and Streamlining; Final Rule
- Approval of a Section 182(f) Exemption; Illinois, Indiana, Michigan, and Wisco
- Transportation Conformity Rule Amendments: Authority for Transportation Conformity Nitrogen Oxides Waivers
- Approval and Promulgation of Implementation Plans; Illinois
- Approval and Promulgation of Implementation Plan; Michigan