costs of such project which would not otherwise be included as expenditures under section 303, 655, 1203, 1353, 1383, or 1396b of this title, as the case may be, and which are not included as part of the costs of projects under section 1310 of this title , shall, to the extent and for the period prescribed by the Secretary, be regarded as expenditures under the State plan or plans approved under such subchapter, or for administration of such State plan or plans, as may be appropriate, and

costs of such project which would not otherwise be a permissible use of funds under part A of subchapter IV and which are not included as part of the costs of projects under section 1310 of this title , shall to the extent and for the period prescribed by the Secretary, be regarded as a permissible use of funds under such part.