of such amounts made available under this heading shall be available for obligation until the Assistant Secretary provides in writing to the Committees on Appropriations of both Houses of Congress recommendations for the appropriate level of design during feasibility studies, the appropriate level of preconstruction engineering and design required before a construction new start, and how cost estimate classifications may best be adjusted for changing environments. WATER INFRASTRUCTURE FINANCE AND INNOVATION PROGRAM ACCOUNT For the cost of direct loans and for the cost of guaranteed loans, as authorized by the Water Infrastructure Finance and Innovation Act of 2014, $2,200,000, to remain available until expended, for safety projects to maintain, upgrade, and repair dams identified in the National Inventory of Dams with a primary owner type of state, local government, public utility, or private: Provided, That no project may be funded with amounts provided under this heading for a dam that is identified as jointly owned in the National Inventory of Dams and where one of those joint owners is the Federal Government: Provided further, That amounts made available under this heading in this Act shall also be available for projects to construct, maintain, upgrade, and repair levees and ancillary features with a primary owner type of state, municipal, county, private, or other non-Federal entity: Provided further, That no project may be funded with amounts provided under this heading for a levee unless the Secretary has certified in advance, in writing, that the levee is not owned, in whole or in part, by the Federal Government: Provided further, That such costs, including the cost of modifying such loans, shall be as defined in section 502 of the Congressional Budget Act of 1974: Provided further, That these funds are available to subsidize gross obligations for the principal amount of direct loans, including capitalized interest, and total loan principal, including capitalized interest, any part of which is to be