; (2) an assessment of the requirement for the levee safety guidelines to be voluntary and a description of actions taken by the Secretary and other applicable Federal agencies to ensure that the guidelines are voluntary; and (3) any recommendations of the Secretary, including the extent to which the levee safety guidelines should be revised. 229. Public-private partnership user's guide (a) In general Not later than 1 year after the date of enactment of this Act, the Secretary shall develop and make publicly available on an existing website of the Corps of Engineers a guide on the use of public-private partnerships for water resources development projects. (b) Inclusions In developing the guide under subsection (a), the Secretary shall include— (1) a description of— (A) applicable authorities and programs of the Secretary that allow for the use of public-private partnerships to carry out water resources development projects; and (B) opportunities across the civil works program of the Corps of Engineers for the use of public-private partnerships, including at recreational facilities; (2) a summary of prior public-private partnerships for water resources development projects, including lessons learned and best practices from those partnerships and projects; (3) a discussion of— (A) the roles and responsibilities of the Corps of Engineers and non-Federal interests when using a public-private partnership for a water resources development project, including the opportunities for risk-sharing; and (B) the potential benefits associated with using a public-private partnership for a water resources development project, including the opportunities to accelerate funding as compared to the annual appropriations process