Metals Sector: Primary (NAICS 331) and Fabricated (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 & Area Sources
  • 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.
• Metal Molding and Casting (Foundries) Effluent Guidelines
• Nonferrous Metals Manufacturing Effluent Guidelines
• Metal Finishing Effluent Guidelines

Compliance

• Combustion Portal: compliance assistance center.
• Industrial Materials Recycling: Foundry Sand
• Metals Sector Compliance Assistance: 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.