### §6939b. Interim control of hazardous waste injection

#### (a) Underground source of drinking water

No hazardous waste may be disposed of by underground injection—

(1) into a formation which contains (within one-quarter mile of the well used for such underground injection) an underground source of drinking water; or

(2) above such a formation.

The prohibitions established under this section shall take effect 6 months after November 8, 1984, except in the case of any State in which identical or more stringent prohibitions are in effect before such date under the Safe Drinking Water Act [42 U.S.C. 300f et seq.].

#### (b) Actions under Comprehensive Environmental Response, Compensation, and Liability Act

Subsection (a) shall not apply to the injection of contaminated ground water into the aquifer from which it was withdrawn, if—

(1) such injection is—

(A) a response action taken under section 9604 or 9606 of this title, or

(B) part of corrective action required under this chapter 1

intended to clean up such contamination;

(2) such contaminated ground water is treated to substantially reduce hazardous constituents prior to such injection; and

(3) such response action or corrective action will, upon completion, be sufficient to protect human health and the environment.

#### (c) Enforcement

In addition to enforcement under the provisions of this chapter, the prohibitions established under paragraphs (1) and (2) of subsection (a) shall be enforceable under the Safe Drinking Water Act [42 U.S.C. 300f et seq.] in any State—

(1) which has adopted identical or more stringent prohibitions under part C of the Safe Drinking Water Act [42 U.S.C. 300h et seq.] and which has assumed primary enforcement responsibility under that Act for enforcement of such prohibitions; or

(2) in which the Administrator has adopted identical or more stringent prohibitions under the Safe Drinking Water Act [42 U.S.C. 300f et seq.] and is exercising primary enforcement responsibility under that Act for enforcement of such prohibitions.

#### (d) Definitions

The terms "primary enforcement responsibility", "underground source of drinking water", "formation" and "well" have the same meanings as provided in regulations of the Administrator under the Safe Drinking Water Act [42 U.S.C. 300f et seq.]. The term "Safe Drinking Water Act" means title XIV of the Public Health Service Act.

(Pub. L. 89–272, title II, §3020, formerly §7010, as added Pub. L. 98–616, title IV, §405(a), Nov. 8, 1984, 98 Stat. 3273; renumbered §3020, and amended Pub. L. 99–339, title II, §201(c), June 19, 1986, 100 Stat. 654.)

#### **Editorial Notes**

#### References in Text

Title XIV of the Public Health Service Act, referred to in subsec. (d), is title XIV of act July 1, 1944, as added Dec. 16, 1974, Pub. L. 93–523, §2(a), 88 Stat. 1660, known as the Safe Drinking Water Act, which is classified generally to subchapter XII (§300f et seq.) of chapter 6A of this title. Part C of the Act is classified generally to part C (§300h et seq.) of subchapter XII of chapter 6A of this title. For complete classification of this Act to the Code, see Short Title note set out under section 201 of this title and Tables.

#### Codification

Section was formerly classified to section 6979a of this title, prior to renumbering by Pub. L. 99–339.

#### Amendments

1986—Subsec. (c). Pub. L. 99–339, §201(c)(1), substituted "enforcement under the provisions of this chapter" for "enforcement under sections 6972 and 6973 of this title".

1 So in original. Probably should be followed by a comma.