On receipt of a proposal submitted under subsection (a), the Secretary shall provide a copy of the proposal to each entity described in paragraph (2) and, if applicable, the Federal agency that operates the project, in the case of a project operated by an agency other than the Department of the Army.
Except as provided in paragraph (2), 100 percent of the cost of developing, reviewing, and implementing a proposal submitted under subsection (a) shall be provided by an entity other than the Federal Government.
Except as provided in subparagraphs (B) and (C), the operation and maintenance costs for the non-Federal sponsor of a proposal submitted under subsection (a) shall be 100 percent of the separable operation and maintenance costs associated with the costs of implementing the proposal.
For a proposal submitted under subsection (a) for constructing additional water supply storage at a reservoir for use under a water supply storage agreement, in addition to the costs under subparagraph (A), the non-Federal costs shall include the proportional share of any joint-use costs for operation, maintenance, repair, replacement, or rehabilitation of the reservoir project determined in accordance with section 390b of this title.
The Secretary may may receive and expend funds contributed by a non-Federal interest for the review and approval of a proposal submitted under subsection (a).
The Secretary is authorized to receive and expend funds from a non-Federal interest to formulate, review, or revise operational documents, pursuant to a proposal submitted in accordance subsection (a), for any reservoir for which the Secretary is authorized to prescribe regulations for the use of storage allocated for flood control or navigation pursuant to section 709 of title 33.
On request by a non-Federal interest, the Secretary may provide technical assistance in the development or implementation of a proposal under subsection (a), including assistance in obtaining necessary permits for construction, if the non-Federal interest contracts with the Secretary to pay all costs of providing the technical assistance.
Nothing in this section affects or modifies any authority of the Secretary to review or modify reservoirs.