42 U.S. Code § 8435 - Citizens suits
Except as otherwise provided in subsection (b), any aggrieved person may commence a civil action for mandatory or prohibitive injunctive relief, including interim equitable relief, against the Secretary or the head of any Federal agency which has a responsibility under this chapter if there is an alleged failure of the Secretary or such agency head to perform any act or duty under this chapter which is not discretionary. The United States district courts shall have jurisdiction over actions brought under this section, without regard to the amount in controversy or the citizenship of the parties.
In any action brought under subsection (a), the Secretary, if not a party, may intervene as a matter of right.
The court, in issuing any final order in any action brought under subsection (a), may award costs of litigation (including reasonable attorney and expert witness fees) to any party, whenever the court determines such award is appropriate.
Nothing in this section shall restrict any right which any aggrieved person (or class of aggrieved persons) may have under any statute or common law to seek enforcement of this chapter or any rule thereunder, or to seek any other relief (including relief against the Secretary or the agency head involved).
This chapter, referred to in subsecs. (a) and (e), was in the original “this Act”, meaning Pub. L. 95–620, Nov. 9, 1978, 92 Stat. 3289, known as the Powerplant and Industrial Fuel Use Act of 1978, which is classified principally to this chapter. For complete classification of this Act to the Code, see Short Title note set out under section 8301 of this title and Tables.