Provisions with respect to property of the Corporation within, surrounded by, or adjoining,

Subject to the provisions of this section, the Commissioner may include in a clearance area any land owned by the Corporation which he might have included in such area had it not been so owned, and where any land of the Corporation is included in a clearance area, or being land surrounded by or adjoining a clearance area, might have been acquired by the Commissioner under section 282 had it not previously belonged to the Corporation, the provisions of this Act, shall apply in relation to such land as if it had been acquired by the Commissioner as being land comprised in the clearance area or, as the case may be, as being land surrounded by or adjoining a clearance area.