Synthetic Organic Chemical Manufacturing Industry: National Emission Standards for Hazardous Air Pollutants (NESHAP) - 40 CFR 63 Subparts F,G,H,I
On this page:
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 (89 FR 42932)
06/26/2023 - Public Comment Period Extension Federal Register Notice (88 FR 41369)
04/25/2023 - Proposed Rule (88 FR 25080)
12/21/2006 - Final Rule (71 FR 76603)
06/14/2006 - Proposed Rule; amendments (71 FR 34422)
12/23/2004 - Proposed Rule, amendments (69 FR 76894) & Direct Final Rule, amendments (69 FR 76859)
01/20/2000 - Proposed Rule; amendments (65 FR 3169)
12/09/1998 - Final Rule Correction (63 FR 67787)
08/22/1997 - Proposed Rule; correction (62 FR 44608) & Proposed Rule; amendments (62 FR 44614)
01/17/1997 - Final Rule: amendments (62 FR 2722)
12/05/1996 - Final Rule: amendments (61 FR 64572)
08/26/1996 - Proposed Rule: amendments (61 FR 43698)
06/20/1996 - Final Rule: amendments (61 FR 31435)
02/29/1996 - Proposed Rule (61 FR 7761) & Direct Final Rule (61 FR 7716)
12/12/1995 - Final Rule; correcting amendments (60 FR 63624)
04/10/1995 - Proposed Rule: clarification (60 FR 18071)
04/10/1995 - Proposed Rule (60 FR 18078) & Direct Final Rule (60 FR 18026)
04/10/1995 - Final Rule; amendments (60 FR 18020)
01/27/1995 - Final Rule & Extension of Compliance (60 FR 5320)
10/28/1994 - Notice of Partial Stay and Reconsideration (94-26818) & Proposed Compliance Extension and Proposed Changes to Subpart H (94-26817)
10/24/1994 - Proposed Amendments (94-25740) & Notice of Partial Stay and Reconsideration (94-25742) & Proposed Amendments (94-25741)
09/20/1994 - Correcting Amendments (94-23113)
06/06/1994 - Final Rule (94-13666)
04/22/1994 - Final Rule (94-6043)
12/31/1992 - Proposed Rule (txt) (txt)
Additional Resources
Documents from the 2024 Final Rule
- 04/09/2024 - Regulatory Impact Analysis (pdf)(1380 KB)
- 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 (pdf)(288 KB)
- 04/09/2024 - Fact Sheet: Key Things to Know About the Final Rule (pdf)(193 KB)
- 04/09/2024 - List of Facilities that EPA Anticipates Will Be Covered by the Final Rule (pdf)(373 KB)
Documents from the 2023 Proposal
- Fact Sheet: EPA's Community Risk Assessment and Risk Based Demographic Assessment (pdf)(154 KB)
Earlier Documents
Compliance
Chemical Sector Clean Air Act Section 114 Information Collection Request
Process-Based Self-Assessment Tool for the Organic Chemical Industry