Area Source Standards
What is an Area Source of Hazardous Air Pollutants? Why is it regulated?
Hazardous air pollutants (HAPs) are known or suspected to cause adverse environmental effects and/or serious health effects. Environmental specialists also refer to these pollutants as toxic air pollutants. The U.S. Environmental Protection Agency (EPA) has identified 187 air pollutants, for example, benzene, which is found in gasoline. EPA also has named 174 categories of sources that release hazardous air pollutants into the air. EPA places standards, or requirements, on sources of hazardous air pollutants called new source performance standards (NSPS).
These new source performance standards place national emission standards for hazardous air pollutants (NESHAP), including maximum achievable control technology (MACT). EPA lists these standards and which agency enforces the standards in tables published in the Federal Register. Click here to access the tables.
Major source of hazardous air pollutants: The term "major source" 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 187 named pollutants, or 25 tons per year of a mixture of pollutants.
Area source of hazardous air pollutants: The term "area source" 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.
To reduce the hazardous area pollutants released by area sources, EPA places standards, or requirements, on area sources to minimize emissions. 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.
What are Missouri's Area Source Requirements?
The following table gives area source requirements for which the Missouri Department of Natural Resources is conducting compliance-enforcement activities. Direct questions regarding standards, compliance, and reports about area sources to the agency listed as “Regulating Agency” in the table, below. The department's Air Pollution Control Program recommends that facilities submit notifications and other required reports about area sources to the air program and EPA Region 7 contacts. If you have questions regarding any of the area source regulations or need help navigating the requirements, contact the Air Pollution Control Program at 573-751-4817.
Table 1 On-line Compliance Resources for Missouri Area Source Requirements
|Regulating Agency||Description||40 CFR 63 Subpart||Title V Permit||Keyword||Rule and Implementation Information||Regulation||Helpful Links|
|EPA||Wool Fiberglass Manufacturing at Area Sources||(2N) - NN||Major Permit Assumed||Fiberglass, Wool||Link||Link|
|EPA||Gasoline Distribution||(6B) - BBBBBB||Exempt||Gasoline||Link||Link||Link|
|EPA||Gasoline Distribution||(6B) - BBBBBB||Exempt||Gasoline||Link||Link||Link|
|EPA||Flexible Polyurethane Foam Production & Fabrication Industry||(6O) - OOOOOO||Exempt||Polyurethane foam||Link||Link|
|EPA||Wood Preserving Industry||(6Q) - QQQQQQ||Exempt||Wood Preserving||Link||Link|
|EPA||Nine Metal Fabrication and Finishing Source Categories||(6X) - XXXXXX||Exempt||Metal Fab and Finish||Link||Link||Link|
|MoDNR||Coke Oven Batteries (Reg refers to Sources, not area or major. )||(1L) - L||Major Permit assumed||Coke Ovens||Link||Link|
|MoDNR||Dry Cleaning Facilities (Major and area sources)||(1M) - M||Exempt||Dry cleaning||Link||Link||Link|
|MoDNR||Hard and Decorative Chromium Electroplating and Chromium Anodizing Tanks (Major and area sources)||(1N) - N||Exempt||Chromium||Link||Link|
|MoDNR||Ethylene Oxide Emissions Standards for Sterilization Facilities (Major and area sources)||(1O) - O||Exempt||Ethylene Oxide||Link||Link|
|MoDNR||Halogenated Solvent Cleaning (Major and area sources)||(1T) - T||Exempt||Solvent Cleaning||Link||Link|
|MoDNR||Secondary Lead Smelting (Major and area sources)||(1X) - X||Major Required||Lead||Link||Link|
|MoDNR||Marine Tank Vessel Loading Operations
(Major and new area sources)
|(1Y) - Y||Required||Vessel||Link||Link|
|MoDNR||Oil and Natural Gas Production Facilities (Major and area sources)||(2H) - HH||Exempt||Oil and Natural Gas||Link||Link|
|MoDNR||Printing and Publishing Industry ( Some Major sources that can prove actuals below HAP limits)||(2K) - KK||Major Permit assumed||Printing||Link||Link||Link|
|MoDNR||Hazardous Waste Incineration Regulations (Major and area sources)||(3E) - EEE||Major Required||Hazardous Waste||Link||Link|
|MoDNR||Portland Cement Regulations (Major and area sources)||(3L) - LLL||Major Required||Cement||Link||Link|
|MoDNR||Secondary Aluminum Production (Major and area sources)||(3R) - RRR||Exempt||Aluminum||Link||Link|
|MoDNR||Primary Lead Smelting||(3T) - TTT||Major Permit Assumed||Lead||Link||Link||Link|
|MoDNR||Publicly Owned Treatment Works Regulations (Major and area sources)||(3V) - VVV||Exempt||Sewer company||Link||Link|
|MoDNR||Municipal Solid Waste Landfills (Major and area sources)||(4A) - AAAA||Required||Landfill||Link||Link||Link|
MoDNR - Ma
|Reciprocating Internal Combustion Engines (Major and area sources)||(4Z) - ZZZZ||Exempt||Internal Combustion Engines||Link||Link||Link|
|MoDNR||Mercury Cell Chlor-Alkali Plants (Major and area sources)||(5I) - IIIII||Major Required||Mercury Cell Chlor-Alkali||Link||Link|
|EPA||Hospital Ethylene Oxide Sterilizers||(5W) - WWWWW||Exempt||Hospital||Link||Link|
|EPA||Electric Arc Furnaces Steelmaking Facilities||(5Y) - YYYYY||Major Required||Steel||Link||Link||Link|
|EPA||Iron and Steel Foundries||(5Z) - ZZZZZ||Exempt||Foundry||Link||Link|
|EPA||Gasoline Dispensing Facilities||(6C) - CCCCCC||Exempt||Gasoline||Link||Link||Link|
|EPA||Polyvinyl Chloride and Copolymers Production||(6D) - DDDDDD||Exempt||Polyvinyl Chloride||Link||Link|
|EPA||Primary Copper Smelting||(6E) - EEEEEE||Major Required||Copper||Link|
|EPA||Secondary Copper Smelting||(6F) - FFFFFF||Major Required||Copper||Link|
|EPA||Primary Nonferrous Metals Area Sources—Zinc, Cadmium, and Beryllium||(6G) - GGGGGG||Major Required||Zinc, Cadmium, and Beryllium||Link|
|EPA||Paint Stripping and Miscellaneous Surface Coating Operations||(6H) - HHHHHH||Exempt||Paint||Link||Link||Link|
|EPA||Industrial, Commercial, and Institutional Boilers||(6J) - JJJJJJ||Exempt||Boilers||Link||Link||Link|
|EPA||Acrylic and Modacrylic Fibers Production||(6L) - LLLLLL||Exempt||Acrylic Fibers||Link|
|EPA||Carbon Black Production||(6M) MMMMMM||Major Permit required||Carbon Black||Link|
|EPA||Chemical Manufacturing Area Sources: Chromium Compounds||(6N) - NNNNNN||Major Permit required||Chromium Mfg||Link|
|EPA||Lead Acid Batteries Industry||(6P) - PPPPPP||Exempt||Lead||Link||Link|
|EPA||Clay Ceramics Manufacturing Industry||(6R) - RRRRRR||Exempt||Ceramics||Link||Link|
|EPA||Glass Manufacturing Industry||(6S) - SSSSSS||Major Permit required||Glass||Link||Link|
|EPA||Secondary Nonferrous Metals Processing||(6T) - TTTTTT||Exempt||Nonferrous metals||Link||Link|
|EPA||Chemical Manufacturing Area Sources||(6V) VVVVVV||Maybe||Chemical||Link||Link||Link|
|EPA||Plating and Polishing Operations||(6W) - WWWWWW||Exempt||Plating and Polishing||Link||Link||Link|
|EPA||Ferroalloys Production Facilities||(6Y) - YYYYYY||Exempt||Ferroalloy||Link||Link|
|EPA||Aluminum, Copper and Other Nonferrous Foundries||(6Z) - ZZZZZZ||Exempt||Aluminum and copper||Link||Link|
|EPA||Asphalt Processing and Asphalt Roofing Manufacturing||(7A) - AAAAAAA||Exempt||Asphalt||Link||Link|
|EPA||Chemical Preparations Industry||(7B) - BBBBBBB||Exempt||Chemical||Link||Link|
|EPA||Paints and Allied Products Manufacturing||(7C) - CCCCCCC||Exempt||Paint||Link|
|EPA||Prepared Feeds Manufacturing||(7D) - DDDDDDD||Exempt||Animal feed||Link||Link||Link|
|EPA||Gold Mine Ore Processing and Production||(7E) - EEEEEEE||Major Permit required||Gold Mine||Link||Link|