; and (2) an execution and management plan detailing how each project will be managed, project team, timelines for each project, and, notwithstanding subsection (d), recommendations on commencement dates based on ensuring proper staffing, resources, and management. (d) Commencement Subject to the availability of appropriations, a project submitted under subsection (c) that is authorized pursuant to section 3307 shall commence not later than 1 year after the date on which such authorization occurs, unless otherwise indicated in the respective committee resolution authorizing the project. (e) Experts and consultants (1) GSA personnel In carrying out the pilot program the Administrator shall identify and use General Services Administration personnel with knowledge and experience in complex real estate transactions. (2) Contracted services The Administrator shall, to the extent practicable and subject to appropriations Acts, use contracts, including nonappropriated contracts, for services necessary to carry out this section. (f) Compliance with budgetary rules For budgetary scorekeeping purposes, a project carried out under this section shall be treated in a manner consistent with the requirements for scoring a leaseback from a public-private partnership under Appendix B of Circular A–11 of the Office of Management and Budget, as of the date of enactment of this section. (g) GAO study Not later than 1 year after the occupancy of projects authorized under this section, the Comptroller General of the United States shall conduct a review of such projects and submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Environment and Public Works of the Senate a report that includes— (1) a review and evaluation of the public-private partnerships executed under this section and a comparison of such agreements to similar projects completed as Government construction, including a comparison of timetables and costs