EPA places standards, or requirements, on categories of stationary sources that emit (or have the potential to emit) one or more hazardous air pollutants (HAPs). EPA listed these standards, called National Emission Standards for Hazardous Air Pollutants (NESHAP) standards, and which agency enforces the standards in tables published in the Federal Register, 80 FR 10596, Feb. 27, 2015.
- Major source of hazardous air pollutants: Refers to any stationary source or group of stationary sources that emits or has the potential to emit 10 tons per year of any of the named HAPs, or 25 tons per year of a mixture of pollutants.
- Area source of hazardous air pollutants: Refers to facilities that release smaller quantities of toxic air pollutants. Although emission from one area source may be relatively small, multiple area sources concern environmental specialists, especially when they are in densely populated areas.
EPA places NESHAP Area Source Standards on area sources to minimize emissions, which reduces the hazardous area pollutants released by the area sources. These requirements call for specific management practices and generally available control technologies (GACT). These technologies consist of methods, practices and techniques applicable to area sources. When EPA developed these technologies, staff members considered the economic impact as well as the technical abilities of employees to operate and maintain systems for emission control.
Missouri's Area Source Requirements
The Missouri Department of Natural Resources is conducting compliance and enforcement activities for area source requirements in the following table. For questions regarding standards, compliance and reports about area sources, please contact the agency listed as “Regulating Agency” in the table. If you need help navigating the requirements, contact the department's Air Pollution Control Program. The department recommends that facilities submit notifications and other required reports about area sources to the department's Air Pollution Control Program and EPA Region 7 Air Technology Standards Contacts.
Online Compliance Resources
| Regulating Agency | Description Sort descending | 40 CFR 63 Subpart | Title V Permit | Keywords | Rule and Implementation Information | Regulation | Helpful Link |
|---|---|---|---|---|---|---|---|
| MoDNR | Publicly Owned Treatment Works Regulations (Major and area sources) | (3V) - VVV | Exempt | sewer company | Publicly Owned Treatment Works (POTW): NESHAP | 40 C.F.R. Part 63 Subpart VVV | |
| EPA | Reciprocating Internal Combustion Engines (Area sources) | (4Z) - ZZZZ | Exempt | Internal Combustion Engines | Regulatory Actions for Stationary Engines | 40 C.F.R. Part 63 Subpart ZZZZ | |
| MoDNR | Reciprocating Internal Combustion Engines (Major sources) | (4Z) - ZZZZ | Exempt | Internal Combustion Engines | Regulatory Actions for Stationary Engines | 40 C.F.R. Part 63 Subpart ZZZZ | |
| MoDNR | Secondary Aluminum Production (Major and area sources) | (3R) - RRR | Exempt | aluminum | Clean Air Act Standards and Guidelines for the Metals Production Industry | 40 C.F.R. Part 63 Subpart RRR | |
| EPA | Secondary Copper Smelting | (6F) - FFFFFF | Major Permit | copper | Secondary Copper Smelting Area Sources: NESHAP | 40 C.F.R. Part 63 Subpart FFFFFF | |
| MoDNR | Secondary Lead Smelting (Major and area sources) | (1X) - X | Major Permit | lead | Clean Air Act Standards and Guidelines for the Metals Production Industry | 40 C.F.R. Part 63 Subpart X | |
| EPA | Secondary Nonferrous Metals Processing | (6T) - TTTTTT | Exempt | nonferrous metal | Secondary Nonferrous Metals Processing Area Sources: NESHAP | 40 C.F.R. Part 63 Subpart TTTTTT | |
| EPA | Wood Preserving Industry | (6Q) - QQQQQQ | Exempt | wood preserving | Wood Preserving Area Sources: NESHAP | 40 C.F.R. Part 63 Subpart QQQQQQ | |
| EPA | Wool Fiberglass Manufacturing (Area sources) | (2N) - NN | Major Permit | fiberglass, Wool | Wool Fiberglass Manufacturing at Area Sources: NESHAP | 40 C.F.R. Part 63 Subpart NN |