Synthetic Organic Chemical Manufacturing Industry: National Emission Standards for Hazardous Air Pollutants (NESHAP) - 40 CFR 63 Subparts F,G,H,I
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Rule Summary
This National Emission Standards for Hazardous Air Pollutants (NESHAP) rule consists of four subparts in 40 CFR part 63. Subpart F provides the applicability criteria for Synthetic organic chemical manufacturing industry (SOCMI) sources, requires that owners and operators of SOCMI sources comply with subparts G and H, and specifies general recordkeeping and reporting requirements. The specific control, monitoring, reporting, and recordkeeping requirements are stated in subpart G for process vents, storage vessels, transfer racks, and wastewater streams, and in subpart H for equipment leaks. Subpart I provides the applicability criteria for the non-SOCMI processes subject to the negotiated regulation for equipment leaks and requires owners and operators to comply with subpart H.
Rule History
05/16/2024 - Final Rule
06/26/2023 - Public Comment Period Extension Federal Register Notice
04/25/2023 - Proposed Rule
12/21/2006 – Final Rule
06/14/2006 – Proposed Rule; amendments
12/23/2004 – Proposed Rule & Direct Final Rule
01/20/2000 – Proposed Rule; amendments
12/09/1998 – Final Rule Correction
08/22/1997 – Proposed Rule; correction & Proposed Rule; amendments
01/17/1997 – Final Rule: amendments
12/05/1996 – Final Rule: amendments
08/26/1996 – Proposed Rule: amendments
06/20/1996 – Final Rule: amendments
02/29/1996 – Proposed Rule & Direct Final Rule
12/12/1995 – Final Rule; correcting amendments
04/10/1995 – Proposed Rule: clarification
04/10/1995 – Proposed Rule & Direct Final Rule
04/10/1995 – Final Rule; amendments
01/27/1995 – Final Rule & Extension of Compliance
10/28/1994 – Notice of Partial Stay and Reconsideration & Proposed Compliance Extension and Proposed Changes to Subpart H
10/24/1994 – Proposed Amendments & Notice of Partial Stay and Reconsideration & Proposed Amendments
09/20/1994 – Correcting Amendments
06/06/1994 – Final Rule
04/22/1994 – Final Rule
12/31/1992 - Proposed Rule (txt) (txt)
Additional Resources
Documents from the 2024 Final Rule
- 04/09/2024 - Regulatory Impact Analysis
- 04/30/2024 - Residual Risk Assessment for the Synthetic Organic Chemical Manufacturing Industry Source Category (pdf)
- 04/09/2024 - Fact Sheet: Overview of Final Rule
- 04/09/2024 - Fact Sheet: Key Things to Know About the Final Rule
- 04/09/2024 - List of Facilities that EPA Anticipates Will Be Covered by the Final Rule
Documents from the 2023 Proposal
Earlier Documents
Compliance
Chemical Sector Clean Air Act Section 114 Information Collection Request
Process-Based Self-Assessment Tool for the Organic Chemical Industry