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. Radiation Protection

Subpart W Rulemaking Activity

NESHAP Subpart W is a radon emission standard for operating uranium mill tailings. In accordance with the Clean Air Act Amendments of 1990, EPA formed a workgroup to review the standard. On May 2, 2014, EPA issued a Notice of Proposed Rulemaking with proposed revisions to Subpart W. On July 21, 2014, EPA issued a Federal Register Notice extending the comment period. View the Federal Register notice extending the comment period to October 29, 2014 (pdf) (212.73 K). On January 17, 2017 EPA officially issued a final rule that revised Subpart W.

View the official rule in the Federal Register (82 FR 5142, January 17, 2017) Note: The effective date of this action was deferred to March 21, 2017.

Subpart W: 2017 Final Rule Fact Sheet (pdf) (148.77 KB) .

On this page:

  • Supporting and Background Documents
  • Enforcement
  • Applications
  • EPA-hosted Quarterly Conference Calls
  • Non-Privileged Records
  • Uranium Location Database

Supporting and Background Documents

View Subpart W Rulemaking Activity: Documents to view items pertaining to the proposed rulemaking, public comment period and other support documents.

View Subpart W Rulemaking History to view older Federal Register notices related to Subpart W.

Enforcement

View Section 114 Letters/Responses related to Subpart W rulemaking. These documents are EPA requests (with responses as they were received) for facility information from uranium recovery facilities.

Applications

View documents related to Pinon Ridge Mill and the application for approval of construction of a tailings facility.

EPA-hosted Quarterly Conference Calls

EPA hosted quarterly conference calls with interested stakeholders during the rulemaking process. The final stakeholder conference call was held January 5, 2017. 

View and download 2017 conference call minutes.

View and download 2016 conference call minutes.

View and download 2015 conference call minutes.

View and download 2014 conference call minutes.

View and download 2013 conference call minutes.

View and download 2012 conference call minutes.

View and download 2011 conference call minutes.

View and download 2010 conference call minutes.

View and download 2009 conference call minutes.

Non-Privileged Records

To view non-privileged records regarding the Subpart W review, select a link below. These non-privileged records are provided in accordance with the settlement agreement in the Subpart W Rulemaking Activity: Documents web page.

View and download 2017 Subpart W non-privileged records.

View and download 2016 Subpart W non-privileged records.

View and download 2015 Subpart W non-privileged records.

View and download 2014 Subpart W non-privileged records.

View and download 2013 Subpart W non-privileged records.

View and download 2012 Subpart W non-privileged records.

View and download 2011 Subpart W non-privileged records.

View and download 2010 Subpart W non-privileged records.

View and download 2009 Subpart W non-privileged records.

View and download Subpart W appointments with incomplete date information.

Uranium Location Database

EPA worked with the multi-agency Colorado Plateau Data Coordination Group Steering Committee to create the Uranium Mines and Mills Location Database. EPA coordinated this effort with federal, state, and tribal agencies in other parts of the western United States. The database identifies and shows the location of active, inactive and suspected uranium mine and mill locations in fourteen western states, as well as mines which principally produced other minerals, but were known to have uranium in the ore.

Radiation Protection

  • Radiation Basics
    • Protecting Yourself from Radiation
    • Radiation Health Effects
    • Radiation Sources & Doses
    • Radiation Terms and Units
    • Radionuclides
  • Radiation Dose Calculator
  • Radiation Regulations & Laws
  • Federal Guidance for Radiation Protection
  • Radiological Emergency Response
  • Phosphogypsum
  • TENORM
  • Radiation Protection Document Library
  • Frequent Questions
  • Glossary
Contact Us about Radiation Protection
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 27, 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.