Title 16ConservationRelease 119-73

§2403a Environmental impact assessment

Title 16 › Chapter CHAPTER 44— - ANTARCTIC CONSERVATION › § 2403a

Last updated Apr 6, 2026|Official source

Summary

Federal projects in Antarctica must follow the National Environmental Policy Act (NEPA). Agencies must do a short initial environmental check unless they find the project will have less than a minor or transitory impact or a full study is already being done. If the short check shows the project will have more than a minor or transitory impact (the law treats “significantly affecting” as the same), the agency must prepare a full, public environmental study and invite comment. The agency’s decision about whether the project can go ahead, or must be changed, must be based on that full study plus any other factors the agency thinks are relevant. “Federal activity” means any work done under a federal research program in Antarctica, even if not done directly by a federal agency. If a U.S. project is done with foreign governments, the Secretary of State and the lead U.S. agency can decide to accept that another country’s environmental review if that country provides most of the work, coordinates the review, and is a party to the Protocol; those decisions cannot be reviewed by courts. The Administrator had to write rules within 2 years after October 2, 1996, to cover environmental reviews for nongovernmental activities (like tourism) and to coordinate reviews from other parties. No final decision to start a project with a full study may be made until it has been considered at an Antarctic Treaty Consultative Meeting, but that consideration cannot delay the decision more than 15 months after the draft study was circulated. The final full study must be shared at least 60 days before the project starts. Emergency actions, the permit process under section 2404, and the fact that these rules are the only federal law duties on agencies for Antarctic impact assessments are also stated. The Secretary of State must publish timely notice in the Federal Register when making the foreign-review decision or when receiving a draft full study.

Full Legal Text

Title 16, §2403a

Conservation — Source: USLM XML via OLRC

(a)(1)(A)The obligations of the United States under Article 8 of and Annex I to the Protocol shall be implemented by applying the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.) to proposals for Federal agency activities in Antarctica, as specified in this section.
(B)The obligations contained in section 102(2)(C) of the National Environmental Policy Act of 1969 (42 U.S.C. 4332(2)(C)) shall apply to all proposals for Federal agency activities occurring in Antarctica and affecting the quality of the human environment in Antarctica or dependent or associated ecosystems, only as specified in this section. For purposes of the application of such section 102(2)(C) under this subsection, the term “significantly affecting the quality of the human environment” shall have the same meaning as the term “more than a minor or transitory impact”.
(2)(A)Unless an agency which proposes to conduct a Federal activity in Antarctica determines that the activity will have less than a minor or transitory impact, or unless a comprehensive environmental evaluation is being prepared in accordance with subparagraph (C), the agency shall prepare an initial environmental evaluation in accordance with Article 2 of Annex I to the Protocol.
(B)If the agency determines, through the preparation of the initial environmental evaluation, that the proposed Federal activity is likely to have no more than a minor or transitory impact, the activity may proceed if appropriate procedures are put in place to assess and verify the impact of the activity.
(C)If the agency determines, through the preparation of the initial environmental evaluation or otherwise, that a proposed Federal activity is likely to have more than a minor or transitory impact, the agency shall prepare and circulate a comprehensive environmental evaluation in accordance with Article 3 of Annex I to the Protocol, and shall make such comprehensive environmental evaluation publicly available for comment.
(3)Any agency decision under this section on whether a proposed Federal activity, to which paragraph (2)(C) applies, should proceed, and, if so, whether in its original or in a modified form, shall be based on the comprehensive environmental evaluation as well as other considerations which the agency, in the exercise of its discretion, considers relevant.
(4)For the purposes of this section, the term “Federal activity” includes all activities conducted under a Federal agency research program in Antarctica, whether or not conducted by a Federal agency.
(b)(1)For the purposes of this subsection, the term “Antarctic joint activity” means any Federal activity in Antarctica which is proposed to be conducted, or which is conducted, jointly or in cooperation with one or more foreign governments. Such term shall be defined in regulations promulgated by such agencies as the President may designate.
(2)Where the Secretary of State, in cooperation with the lead United States agency planning an Antarctic joint activity, determines that—
(A)the major part of the joint activity is being contributed by a government or governments other than the United States;
(B)one such government is coordinating the implementation of environmental impact assessment procedures for that activity; and
(C)such government has signed, ratified, or acceded to the Protocol,
(3)In all cases of Antarctic joint activity other than those described in paragraph (2), the requirements of subsection (a) of this section shall apply with respect to that activity, except as provided in paragraph (4).
(4)Determinations described in paragraph (2), and agency actions and decisions in connection with assessments of impacts of Antarctic joint activities, shall not be subject to judicial review.
(c)(1)The Administrator shall, within 2 years after October 2, 1996, promulgate regulations to provide for—
(A)the environmental impact assessment of nongovernmental activities, including tourism, for which the United States is required to give advance notice under paragraph 5 of Article VII of the Treaty; and
(B)coordination of the review of information regarding environmental impact assessment received from other Parties under the Protocol.
(2)Such regulations shall be consistent with Annex I to the Protocol.
(d)(1)No decision shall be taken to proceed with an activity for which a comprehensive environmental evaluation is prepared under this section unless there has been an opportunity for consideration of the draft comprehensive environmental evaluation at an Antarctic Treaty Consultative Meeting, except that no decision to proceed with a proposed activity shall be delayed through the operation of this paragraph for more than 15 months from the date of circulation of the draft comprehensive environmental evaluation pursuant to Article 3(3) of Annex I to the Protocol.
(2)The Secretary of State shall circulate the final comprehensive environmental evaluation, in accordance with Article 3(6) of Annex I to the Protocol, at least 60 days before the commencement of the activity in Antarctica.
(e)The requirements of this section, and of regulations promulgated under this section, shall not apply in cases of emergency relating to the safety of human life or of ships, aircraft, or equipment and facilities of high value, or the protection of the environment, which require an activity to be undertaken without fulfilling those requirements.
(f)Notwithstanding any other provision of law, the requirements of this section shall constitute the sole and exclusive statutory obligations of the Federal agencies with regard to assessing the environmental impacts of proposed Federal activities occurring in Antarctica.
(g)The provisions of this section requiring environmental impact assessments (including initial environmental evaluations and comprehensive environmental evaluations) shall not apply to Federal actions with respect to issuing permits under section 2404 of this title.
(h)Whenever the Secretary of State makes a determination under paragraph (2) of subsection (b) of this section, or receives a draft comprehensive environmental evaluation in accordance with Annex I, Article 3(3) to the Protocol, the Secretary of State shall cause timely notice thereof to be published in the Federal Register.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

The National Environmental Policy Act of 1969, referred to in subsec. (a)(1)(A), is Pub. L. 91–190, Jan. 1, 1970, 83 Stat. 852, which is classified generally to chapter 55 (§ 4321 et seq.) of Title 42, The Public Health and Welfare. For complete classification of this Act to the Code, see

Short Title

note set out under section 4321 of Title 42 and Tables.

Reference

Citations & Metadata

Citation

16 U.S.C. § 2403a

Title 16Conservation

Last Updated

Apr 6, 2026

Release point: 119-73