The environmental review process must be concluded before the obligation of funds; except for infrastructure projects where the assurance that funds will be available for community health, safety, or economic development has been determined as necessary by the Agency Administrator. At the discretion of the Agency Administrator, funds may be obligated contingent upon the conclusion of the environmental review process prior to any action that would have an adverse effect on the environment or limit the choices of any reasonable alternatives. Funds so obligated shall be rescinded if the Agency cannot conclude the environmental review process before the end of the fiscal year after the year in which the funds were obligated, or if the Agency determines that it cannot proceed with approval based on findings in the environmental review process. For the purposes of this section, infrastructure projects shall include projects such as broadband, telecommunications, electric, energy efficiency, smart grid, water, sewer, transportation, and energy capital investments in physical plant and equipment, but not investments authorized in the Housing Act of 1949.