25 CFR § 224.78
How long will a TERA remain in effect?
February 24, 2021
A TERA that takes effect under this part remains in effect to the extent any provision of the TERA is consistent with applicable Federal law (including regulations), unless and until either:
(a) The Secretary reassumes all activities included within a TERA without the consent of the Tribe under Subpart G; or
(b) The Tribe rescinds a TERA under Subpart H.
[84 FR 69613, Dec. 18, 2019]