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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 57Subpart C - Subpart C—Constant Controls and Related Requirements
§ 57.301 - General requirements.
§ 57.302 - Performance level of interim constant controls.
§ 57.303 - Total plantwide emission limitation.
§ 57.304 - Bypass, excess emissions and malfunctions.
§ 57.305 - Compliance monitoring and reporting.
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