# section112-radionuclides — Clean Air Act "major source" emission thresholds by pollutant and area classification

For section112-radionuclides, which major-source test is Section 112 HAP major source; pollutant or pollutant class is radionuclides; threshold (tons per year) is specified by the Administrator by rule; definition heading is Major source means any stationary source, recorded from its source on 2026-08-19; source re-checked 2026-09-09.

- **Row ID:** section112-radionuclides _(our reading, not quoted from the source)_
- **Which major-source test:** Section 112 HAP major source _(our reading, not quoted from the source)_
- **Pollutant or pollutant class:** radionuclides _(verified: appears in the quote below)_
- **Threshold (tons per year):** specified by the Administrator by rule _(verified: appears in the quote below)_
- **Definition heading:** Major source means any stationary source _(verified: appears in the quote below)_

## What the source says

> For radionuclides, “major source” shall have the meaning specified by the Administrator by rule.

## Source

- https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-70/subpart-A/section-70.2

Last verified: 2026-09-09. Review by: 2027-02-15.
Part of [Clean Air Act "major source" emission thresholds by pollutant and area classification](https://referencesource.org/clean-air-act-major-source-thresholds/).