; or (B) any claim of the Fort Belknap Indian Community, a member of the Fort Belknap Indian Community, or an allottee, or of the United States, acting on behalf of the Fort Belknap Indian Community, a member of the Fort Belknap Indian Community, or an allottee, for— (i) damage to water quality caused by mining activities in the Little Rockies Mountains; or (ii) depletion in surface flows or groundwater on the southern end of the Reservation. (j) Water transport obligation (1) In general The Secretary, acting through the Director of the Bureau of Indian Affairs and the Commissioner, shall provide assistance with— (A) the planning, design, and construction of— (i) the Fort Belknap water supply infrastructure; (ii) the Fort Belknap Indian Irrigation Rehabilitation Project; and (iii) the restoration of historic irrigation projects within the boundaries of the Reservation; and (B) any environmental compliance activities necessary in the development and construction of a project under this Act. (2) Authorization of studies (A) In general The Secretary, acting through the Director of the Bureau of Indian Affairs and the Commissioner, in consultation with the Fort Belknap Indian Community and the State, shall carry out 1 or more studies— (i) to determine the feasibility (and, if feasible, the design) of a water supply and wastewater treatment system for the Fort Belknap Indian Community; and (ii) if a project to be developed and constructed under this Act is associated with, affected by, or located within the same river basin as a Federal reclamation project in existence on the date of enactment of this Act— (I) to determine the environmental impact of the project