(a) Under the Federal Water Pollution Control Act, an individual, corporation, partnership, association, State, municipality, commission, or political subdivision of a State, or any interstate body.
(b) Under the Resource Conservation and Recovery Act, an individual, trust, firm, joint stock company, corporation (including a government corporation), partnership, association, State, municipality, commission, political subdivision of a State, or any interstate body. [38 FR 12784, May 15, 1973, as amended at 42 FR 56057, Oct. 20, 1977]