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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 40
Chapter I
Part 63
Subpart D - Subpart D—Regulations Governing Compliance Extensions for Early Reductions of Hazardous Air Pollutants
§ 63.70 - Applicability.
§ 63.71 - Definitions.
§ 63.72 - General provisions for compliance extensions.
§ 63.73 - Source.
§ 63.74 - Demonstration of early reduction.
§ 63.75 - Enforceable commitments.
§ 63.76 - Review of base year emissions.
§ 63.77 - Application procedures.
§ 63.78 - Early reduction demonstration evaluation.
§ 63.79 - Approval of applications.
§ 63.80 - Enforcement.
§ 63.81 - Rules for special situations.
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