(1) Upon sanction of the scheme, the Government shall publish in the official Gazette a declaration stating the fact of such sanction and that the land proposed to be acquired by the Board for the purposes of the scheme is required for a public purpose.
(2) The declaration shall state the limits within which the land proposed to be acquired is situated, the purpose for which it is needed, its approximate area and the place where a plan of the land may be inspected.
(3) The said declaration shall be conclusive evidence that the land is needed for a public purpose, and the Board shall, upon the publication of the said declaration proceed to execute the scheme.
(4) If at any time it appears to the Board that an improvement can be made in any part of the scheme, the Board may alter the scheme for the purpose of making such improvement and shall subject to the provisions of sub-sections (5) and (6) forthwith proceed to execute the scheme as altered.
(5) If the estimated cost of executing the scheme as altered exceed, by a greater sum than five per cent of the estimated cost of executing the scheme as sanctioned, the Board shall not, without the previous sanction of the Government, proceed to execute the scheme as altered.
(6) If the scheme as altered involves the acquisition otherwise than by agreement, of any land other than that specified in the Schedule referred to in clause (e) of sub-section
(2) of section 16 the provisions of sections 15 and 16 and of sub-section (1) of this section shall apply to the part of the scheme so altered, in the same manner as if such altered part were the scheme.