; except that, in the case of grants under subsection (a)(3), the Secretary shall ensure that each eligible local government shall supplement the amount received under such grant with amount that is not less than such grant amount. (2) Use Supplemental amounts made available in accordance with paragraph (1) shall be used only for projects and activities for which grant amounts are eligible to be used. (3) Sources for supplemental funds (A) Limitation on federal funds Supplemental funds required by paragraph (1) may not include any amounts made available from a Federal grant program, other than— (i) the community development block grant program under title I of the Housing and Community Development Act of 1974 ( 42 U.S.C. 5301 et seq.); (ii) any Federal program for general revenue sharing with local governments; or (iii) any Federal program that provides block grants to States and localities to develop, promote, implement, and manage energy efficiency and conservation projects and programs designed to reduce fossil fuel emissions, reduce energy use, improve energy efficiency, and create and retain jobs. (B) State and private amounts The Secretary may require that a portion of the supplemental funds required by paragraph (1) come from the State or private sources. (C) Non-federal funds Supplemental funds required by paragraph (1) may include— (i) general or specific purpose State or local revenues; (ii) State categorical grants; (iii) special appropriations under State law; (iv) donations of land, building, or building materials; (v) in-kind construction, technical, and planning services