Self-Governance Tribes assume environmental responsibilities by:
(a)
Adopting a resolution or taking an equivalent Tribal action which:
(1)
Designates a certifying officer to represent the Self-Governance Tribe and to assume the status of a responsible Federal official under NEPA, NHPA, and related provisions of law; and
(2)
Accepts the jurisdiction of the Federal court, as provided in § 137.310 and § 137.311 for purposes of enforcement of the Federal environmental responsibilities assumed by the Self-Governance Tribe; and
(b)
Entering into a construction project agreement under section 509 of the Act [25 U.S.C. 458aaa-8 ].