Miscellaneous Organic Chemical Manufacturing: National Emission Standards for Hazardous Air Pollutants (NESHAP)
On this page:
Rule Summary
The national emission standards for hazardous air pollutants (NESHAP) for the miscellaneous organic chemical (MON) manufacturing industry established emission limits and work practice standards for new and existing miscellaneous organic chemical manufacturing process units, wastewater treatment and conveyance systems, transfer operations, and associated ancillary equipment and implemented section 112(d) of the Clean Air Act (CAA) by requiring all major sources to meet hazardous air pollutants (HAP) emission standards to reflect application of the maximum achievable control technology (MACT).
The HAP emitted from MON manufacturing facilities include toluene, ethylene oxide, methanol, xylene, hydrogen chloride, and methylene chloride. Exposure to these substances may cause adverse health effects such as irritation of the lung, eye, and mucous membranes, effects on the central nervous system, and cancer.
The final rule will reduce HAP emissions by 16,800 tons per year for existing facilities that manufacture miscellaneous organic chemicals.
See the regulations below for more details.
Rule History
1/25/2022 - Proposed Rule: Reconsideration of the 2020 NESHAP for the MON RTR
8/12/2020 - Final Rule
12/17/2019 - Proposed Amendments
12/17/2019 - Public Hearing and Comment Period Extension
07/14/2006 - Final Rule
12/08/2005 - Proposed Rule
08/30/2005 - Partial Withdrawal of Rule
07/01/2005 - Direct final rule & Proposed Amendments
11/10/2003 - Final Rule
05/01/2002 - Comment Period Extension
04/04/2002 - Proposed Rule
Additional Resources
Reconsideration:
- Public Hearing Information
- Fact Sheet: Reconsideration Proposal of the MON Final Risk and Technology Review Amendments (pdf)
- Ficha Informativa: Reconsideración de las Normas Nacionales de Emisiones para Contaminantes Peligrosos del Aire (NESHAP) de 2020 - Industria química orgánica miscelánea (pdf)
- TỜ SỰ KIỆN: Xem xét lại Tiêu Chuẩn Khí Thải Quốc Gia Năm 2020 Đối Với các Chất Gây Ô Nhiễm Không Khí Nguy Hiểm (NESHAP): Sản Xuất Hóa Chất Hữu Cơ Linh Tinh (pdf)
Final Amendments:
Proposed Amendments:
View the supporting documents in the docket folder to find additional related documents to this rule.
Compliance
Inspection Tool for the Miscellaneous Organic Chemical Manufacturing NESHAP (240 pp, 2.35 MB, About PDF)