25 CFR 170.470 - Which construction standards must Tribes use?
(a) Tribes must either:
(1) Use the approved standards referred to in § 170.454; or
(b) For designing and building eligible intermodal projects funded by the TTP, Tribes must use either:
(1) Nationally recognized standards for comparable projects; or
(2) Tribally adopted standards that meet or exceed nationally recognized standards for comparable projects.