U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 51Subpart K - Subpart K—Source Surveillance
§ 51.210 - General.
§ 51.211 - Emission reports and recordkeeping.
§ 51.212 - Testing, inspection, enforcement, and complaints.
§ 51.213 - Transportation control measures.
§ 51.214 - Continuous emission monitoring.
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