payments received under this Act, with interest on the payments as determined appropriate by the Secretary. (e) Non-Federal contributions (1) In general Except as provided in paragraph (2), no fish habitat conservation project may be recommended by the Board under subsection (b) or provided financial assistance under this Act unless at least 50 percent of the cost of the fish habitat conservation project will be funded with non-Federal funds. (2) Projects on Federal land or water Notwithstanding paragraph (1), Federal funds may be used for payment of 100 percent of the costs of a fish habitat conservation project located on Federal land or water. (3) Non-Federal share The non-Federal share of the cost of a fish habitat conservation project— (A) may not be derived from a Federal grant program