Area Sources of Urban Air Toxics

Area sources are smaller stationary sources of air pollution that emit less than 10 tons per year of a single air toxic, or less than 25 tons per year of a combination of air toxics. Through the Integrated Urban Air Toxics Strategy, and multiple separate listings, the EPA identified 68 area source categories that represent 90 percent of the combined emissions of the 30 urban air toxics.

List of 68 Area Sources of Urban Air Toxics
Acrylic Fibers/Modacrylic Fibers Production Iron and Steel Forging
Agricultural Chemicals and Pesticides Manufacturing Iron Foundries
Aluminum Foundries Lead Acid Battery Manufacturing
Asphalt Processing and Asphalt Roofing Manufacturing Medical Waste Incinerators
Autobody Refinishing Paint Shops Mercury Cell Chlor-Alkali Plants
Carbon Black Production Miscellaneous Organic NESHAP
Chemical Manufacturing: Chromium Compounds Municipal Landfills
Chemical Preparations Municipal Waste Combustors (MWC)
Chromic Acid Anodizing Nonferrous Foundries
Clay Products Manufacturing (Clay Ceramics Manufacturing) Oil and Natural Gas Production
Commercial Sterilization Facilities Paint Strippers
Copper Foundries Paints and Allied Products Manufacturing
Cyclic Crude and Intermediate Production Pharmaceutical Production
Decorative Chromium Electroplating Plastic Materials and Resins Manufacturing
Dry Cleaning Facilities Plastic Parts and Products (Surface Coating)
Electrical and Electronic Equipment – Finish Operations Plating and Polishing
Fabricated Metal Products Polyvinyl Chloride and Copolymers Production
Fabricated Plate Work Portland Cement
Fabricated Structural Metal Manufacturing Prepared Feeds Materials
Ferroalloys Production: Ferromanganese & Silicomanganese Pressed and Blown Glass and Glassware Manufacturing
Flexible Polyurethane Foam Fabrication Operations Primary Copper (not subject to MACT)
Flexible Polyurethane Foam Production Primary Metal Products Manufacturing
Gas Distribution Stage 1 Primary Nonferrous Metals (Zn, Cd and Be)
Halogenated Solvent Cleaners Public Owned Treatment Works
Hard Chromium Electroplating Secondary Copper Smelting
Hazardous Waste Incineration Secondary Lead Smelting
Heating Equipment, Except Electric Secondary Nonferrous Metals
Hospital Sterilizers Sewage Sludge Incineration
Industrial Boilers Fired by Coal, Wood and Oil Stainless and Nonstainless Steel Manufacturing Electric Arc Furnace
Industrial Inorganic Chemical Manufacturing Stationary Internal Combustion Engines
Industrial Machinery and Equipment – Finish Operations Steel Foundries
Industrial Organic Chemical Manufacturing Synthetic Rubber Manufacturing
Inorganic Pigments Manufacturing Valves and Pipe Fittings
Institutional/Commercial Boilers Fired by Coal, Wood and Oil Wood Preserving

Area Source Category Listing Revisions