Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Stationary Sources of Air Pollution

Basic Oxygen Process Furnace (BOPF) Steelmaking Facilities Secondary Emissions: New Source Performance Standards

Basic Oxygen Process Furnace (BOPF) Steelmaking Facilities Secondary Emissions: New Source Performance Standards
Basic Information
Legal Authorities
  • 42 U.S.C. §7401
  • 42 U.S.C. §7411
  • 42 U.S.C. §7414
  • 42 U.S.C. §7416
  • 42 U.S.C. §7601
Federal Register Citations
  • 51 FR 150
  • 48 FR 2658
  • 43 FR 15600
  • 42 FR 12130
  • 39 FR 9318
  • 38 FR 15406
Code of Federal Regulations Citations
  • 40 CFR Part 60 Subpart Na

On this page:

  • Rule Summary
  • Rule History
  • Additional Resources

Rule Summary

These final secondary emission standards apply to any new, modified, or reconstructed top-blown BOPF and to any new, modified, or reconstructed hot metal transfer station or skimming station used with a bottom-blown or a top-blown BOPF, for which construction commenced after January 20, 1983.  Visible emissions from shop roof monitors (or other building openings) are limited to an opacity of 10 percent during the steel production cycle of a top-blown BOPF, and during hot metal transfer, and skimming for a bottom-blown BOPF except that an opacity greater than 10 percent but less than 20 percent may occur once per steel production cycle.  Visible emissions from the shop roof monitor during the furnace cycle of a bottom-blown BOPF are not subject to the roof monitor opacity standard. Reference Method 9, with data reduction procedures for 3-minute averages will be used to determine compliance with the secondary emission opacity standards.

Rule History

01/02/1986 - Final Rule (51 FR 150)

01/20/1983 - Proposed rule and notice of public hearing

04/13/1978 - Final Rule (43 FR 15600)

03/02/1977 - Proposed Rule

03/08/1974 - Final Rule (39 FR 9323)

06/11/1973 - Proposed Rule

Additional Resources

Background Information Document

Stationary Sources of Air Pollution

  • Regulations
    • Industry Sector Groups
    • National Emission Standards for Hazardous Air Pollutants (NESHAP)
      • Area Source Standards
      • Risk and Technology Review Status
    • New Source Performance Standards
    • Good Neighbor Plan for the 2015 Ozone National Ambient Air Quality Standards
  • Small Business Assistance Program
Contact Us About Stationary Sources of Air Pollution
Contact Us About Stationary Sources of Air Pollution to ask a question, provide feedback, or report a problem.
Last updated on March 26, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.