; and (2) for deposit in the Navajo OM&R Account of the Trust Fund established under section 6(b)(2), $11,100,000, which funds shall be retained until expended, withdrawn, or reverted to the General Fund of the Treasury. (b) Implementation costs There are authorized to be appropriated non-trust funds in the amount of $1,000,000 to assist the United States with costs associated with the implementation of this Act, including the preparation of a hydrographic survey of historic and existing water uses on the Reservation and on allotments. (c) State cost share The State shall contribute $8,000,000 payable to the Secretary for deposit into the Navajo Water Development Projects Account of the Trust Fund established under section 6(b)(1) in installments in each of the 3 years following the execution of the agreement by the Secretary as provided for in subsection (b) of section 4. (d) Fluctuation in Costs (1) In general The amount authorized to be 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 occurring after the date of enactment of this Act as indicated by the Bureau of Reclamation Construction Cost Index—Composite Trend. (2) Repetition The adjustment process under this subsection shall be repeated for each subsequent amount appropriated until the amount authorized, as adjusted, has been appropriated. (3) Period of indexing The period of indexing adjustment for any increment of funding shall end on the date on which funds are deposited into the Trust Fund. 8. Conditions precedent (a) In general The waivers and releases contained in section 9 shall become effective as of the date the Secretary causes to be published in the Federal Register a statement of findings that— (1) to the extent that the agreement conflicts with this Act, the agreement has been revised to conform with this Act