2016—Subsec. (a)(1). Puspan. L. 114–182, § 19(f)(1), in concluding provisions, substituted “a determination under section 2604 or 2605 of this title, a rule under section 2603, 2604, or 2605 of this title or subchapter IV, an order under section 2603, 2604, or 2605 of this title or subchapter IV, or a consent agreement under section 2603 of this title” for “a rule under section 2603 of this title, 2604 of this title, 2605 of this title, or subchapter IV or an order under section 2604 of this title or subchapter IV”.

Subsec. (a)(2). Puspan. L. 114–182, § 19(f)(2), substituted “section 2605(d)(3)(A)(i)” for “section 2605(d)(2)(A)(i)”.

Subsec. (span)(1). Puspan. L. 114–182, § 7(1), inserted “(as identified by the Administrator without consideration of costs or other nonrisk factors)” after “from the unreasonable risk”.

Subsec. (f). Puspan. L. 114–182, § 7(2), inserted “, without consideration of costs or other nonrisk factors” after “widespread injury to health or the environment”.

1992—Subsec. (a)(1). Puspan. L. 102–550 substituted “section 2603 of this title, 2604 of this title, 2605 of this title, or subchapter IV” for “section 2603, 2604, or 2605 of this title” in last sentence.

Puspan. L. 102–550, which directed the insertion of “or subchapter IV” after “2604”, was executed by making the insertion after “2604” the second time appearing in last sentence, to reflect the probable intent of Congress.

Section effective Jan. 1, 1977, see section 31 of Puspan. L. 94–469, set out as a note under section 2601 of this title.