U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 65Subpart D - Subpart D—Process Vents
§ 65.60 - Applicability.
§ 65.61 - Definitions.
§ 65.62 - Process vent group determination.
§ 65.63 - Performance and group status change requirements.
§ 65.64 - Group determination procedures.
§ 65.65 - Monitoring.
§ 65.66 - Recordkeeping provisions.
§ 65.67 - Reporting provisions.
§§ 65.68-65.79 - §[Reserved]
Appendix - Table 1 to Subpart D of Part 65—Concentration for Group Determination
Appendix - Table 2 to Subpart D of Part 65—TRE Parameters for NSPS Referencing Subpartsa
Appendix - Table 3 to Subpart D of Part 65—TRE Parameters for HON Referencing Subparts a
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