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  1. Home
  2. Toxics Release Inventory (TRI) Program

TRI Reporting Using North American Industry Classification System (NAICS)

TRI Reporting Using North American Industry Classification System (NAICS)
Basic Information
Legal Authorities
  • 42 U.S.C. §11023
  • 42 U.S.C. §11048
Federal Register Citations
  • 71 FR 32464
Code of Federal Regulations Citations
  • 40 CFR Part 372
Docket Numbers
  • EPA-HQ-TRI-2002-0003
Effective Date
  • August 7, 2006

On this page:

  • Rule Summary
  • Rule History
  • Additional Resources

Rule Summary

In 2006, EPA updated the Toxics Release Inventory (TRI) regulations to include the North American Industry Classification System (NAICS) codes. EPA conducted a careful crosswalk between the Standard Industry Classification (SIC) codes covered under Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA) and their corresponding NAICS codes. Facilities may now rely on the list of covered NAICS codes to determine whether they are required to report to the TRI Program.

Rule History

On April 9, 1997, the Office of Management and Budget (OMB) published a Federal Register Notice of final decision to adopt NAICS for the United States, a new economic classification system that replaced the SIC system that had traditionally been used by the federal government for collecting and organizing industry-related statistics.

Additional Resources

Revision - Final Rule (PDF)(8 pp, 207 K, About PDF)
Revision - Proposed Rule (PDF)(9 pp, 208 K, About PDF)
Final Rule (PDF)(15 pp, 230 K, About PDF)
Proposed Rule (PDF)(16 pp, 222 K, About PDF)

Toxics Release Inventory (TRI) Program

  • What is TRI?
    • Covered Chemicals
    • Covered Industry Sectors
    • Data Quality
  • Reporting for Facilities
    • Guidance (GuideME)
    • Reporting Software (TRI-MEweb)
    • Laws & Regulatory Activities
    • Enforcement
  • TRI Data & Tools
  • Pollution Prevention
    • Guide to Using TRI Data to Reduce Pollution in Your Community
    • P2 Analyses
    • P2 Resources
  • TRI Data in Action
    • Data Uses Catalog
    • TRI for Communities
    • TRI for Advocacy Organizations
    • TRI for Researchers
    • TRI for the Press
    • TRI for Industry
    • TRI for Government
    • TRI for Tribes
    • What You Can Do
  • TRI Site Map
TRI Program Contacts
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on January 30, 2025
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