Train v. Colorado Public Interest Research Group, Inc.
Headline: Court limits EPA power, rules radioactive materials covered by the Atomic Energy Act are not "pollutants" under the Water Pollution Control Act, leaving nuclear discharge control to atomic-energy regulators.
Holding: The Court ruled that source, byproduct, and special nuclear materials regulated under the Atomic Energy Act are not "pollutants" under the Federal Water Pollution Control Act, so the EPA need not regulate their water discharges.
- Keeps primary control of AEA-regulated nuclear discharges with atomic-energy regulators, not the EPA.
- Prevents EPA from requiring water pollution permits for AEA-covered radioactive materials.
- Leaves nuclear plants and federal facilities governed by AEC/NRC effluent standards.
Summary
Background
Respondents are Colorado-based organizations and residents who feared harm from radioactive discharges at the Fort St. Vrain nuclear power plant and the Rocky Flats weapons plant. Those facilities operate under radioactive-effluent standards set by the Atomic Energy Commission (now NRC/ERDA). The EPA adopted permit regulations excluding source, byproduct, and special nuclear materials (those governed by the Atomic Energy Act) from the Water Pollution Control Act permit program. Respondents sued under the Act’s citizen-suit provision, seeking a declaration that all radioactive materials are "pollutants" and an injunction forcing EPA regulation. The District Court sided with the AEC, the Court of Appeals required EPA regulation, and the Supreme Court granted review because of the issue’s importance.
Reasoning
The central question was whether source, byproduct, and special nuclear materials are "pollutants" under the 1972 Water Pollution Control Act. The Court examined statutory language and then relied heavily on legislative history, including House and Senate committee reports and floor colloquies, which showed Congress meant to preserve the Atomic Energy Act’s pervasive regulatory scheme. The Court concluded that including AEA-regulated materials under the Water Pollution Act would have been a major change Congress did not intend. The Court therefore held those AEA-covered radioactive materials are not "pollutants" for the Act’s permit program and that the EPA acted within its mandate in declining to regulate them.
Real world impact
The decision leaves primary authority over discharges of AEA-regulated radioactive materials with atomic-energy regulators rather than the EPA under the Water Pollution Act. Nuclear plants and federal facilities subject to AEA licensing remain governed by AEC/NRC effluent rules. The opinion also notes EPA still has a role in setting generally applicable environmental radiation standards, while the AEC/NRC keeps licensing and implementation authority.
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