Primary Metal Manufacturing (NAICS 331) and Fabricated Metal Product Manufacturing (NAICS 332)

The metals sector is part of the manufacturing sector (NAICS 31 - 33).  It includes the fabricated metals industry, the iron and steel industry, the metal casting industry, and the nonferrous metals industry.

Laws and Regulations

• Air:
  • Greenhouse Gas Reporting Program
  • National Emission Standards for Hazardous Air Pollutants (NESHAP):
    • Benzene Waste Operations
    • Chromium Electroplating
    • Coke Ovens: Pushing, Quenching,& Battery Stacks
    • Coke Ovens (Charging, Top Side, and Door Leaks)
    • Degreasing Organic Cleaners (Halogenated Solvent Cleaners)
    • Electric Arc Furnace Steelmaking Facilities (Area Sources)
    • Ferromanganese and Silicomanganese Production (Ferroalloys, Major Sources)
    • Industrial Cooling Towers
    • Integrated Iron and Steel
    • Iron and Steel Foundries (Major Sources)
    • Lime Manufacturing
    • Metal Can (surface coating)
    • Metal Coil (surface coating)
    • Metal Furniture (surface coating)
    • Paper and Other Web (surface coating)
    • Polyvinyl Chloride and Copolymers Production
    • Primary Aluminum
    • Primary Copper
    • Primary Lead Smelting
    • Primary Magnesium Refining
    • Reinforced Plastic Composites Production
    • Secondary Aluminum
    • Secondary Lead Smelters
• Water:
  • Iron and Steel Rulemaking Process: effluent guidelines. 
  • Metal Products and Machinery: effluent guidelines.

Compliance

• Combustion Portal Exit: compliance assistance center.
• Industrial Materials Recycling: Foundry Sand
• Metals Sector Compliance Assistance Exit: including sector profiles and assistance centers.
• Mining and Mineral Processing Compliance Assistance Resources for the Gold and Copper Industries

Related Technical Information

• AP 42 - Chapter 12: Metallurgical Industry - emission factors and process information for air pollution source categories.