U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 60Subpart NNN - Subpart NNN—Standards of Performance for Volatile Organic Compound (VOC) Emissions From Synthetic Organic Chemical Manufacturing Industry (SOCMI) Distillation Operations After December 30, 1983, and on or Before April 25, 2023
§ 60.660 - Applicability and designation of affected facility.
§ 60.661 - Definitions.
§ 60.662 - Standards.
§ 60.663 - Monitoring of emissions and operations.
§ 60.664 - Test methods and procedures.
§ 60.665 - Reporting and recordkeeping requirements.
§ 60.666 - Reconstruction.
§ 60.667 - Chemicals affected by subpart NNN.
§ 60.668 - Delegation of authority.
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