Funding

(a) Mandatory appropriations Out of any money in the Treasury not otherwise appropriated, the Secretary of the Treasury shall transfer to the Secretary the following amounts to deposit in the following accounts: (1) Agua caliente development projects account $300,000,000, to remain available until expended, withdrawn, or reverted to the general fund of the Treasury. (2) Agua Caliente Groundwater augmentation account $100,000,000, to remain available until expended, withdrawn, or reverted to the general fund of the Treasury. (3) Agua Caliente Water management account $50,000,000, to remain available until expended, withdrawn, or reverted to the general fund of the Treasury. (4) Agua Caliente Operation, maintenance and replacement costs account $50,000,000, to remain available until expended, withdrawn, or reverted to the general fund of the Treasury. (b) Fluctuation in costs (1) In general The amounts appropriated under subsection (a) shall be increased or decreased, as appropriate, by such amounts as may be justified by reason of ordinary fluctuations in costs, as indicated by the Bureau of Reclamation Construction Cost Index-Composite Trend. (2) Construction cost adjustment The amounts appropriated under subsection (a) shall be adjusted to address construction cost changes necessary to account for unforeseen market volatility that may not otherwise be captured by engineering costs indices, as determined by the Secretary, including repricing applicable to the types of construction and current industry standards involved. (3) Repetition The adjustment process under this subsection shall be repeated for each subsequent amount appropriated until the authorized amount, as adjusted, has been appropriated. (4) Period of indexing The period of indexing and adjustment under this subsection for any increment of funding shall start on May 19, 2025, and shall end on the date on which funds are deposited in the Agua Caliente Settlement Trust Fund.