23.—(1) The Executive may, in relation to any land within the Order limits, for the purposes of this Order—
(a)survey or investigate the land;
(b)without prejudice to the generality of sub-paragraph (a), make trial holes in such positions as the undertaker thinks fit on the land to investigate the nature of the surface layer and subsoil and remove soil samples;
(c)without prejudice to the generality of sub-paragraph (a), carry out archaeological investigations on the land;
(d)take steps to protect or remove any flora or fauna on the land where the flora or fauna may be affected by the carrying out of the authorised works;
(e)place on, leave on and remove from the land apparatus for use in connection with the exercise of any powers conferred by sub-paragraphs (a) to (d); and
(f)enter on the land for the purpose of exercising the powers conferred by sub-paragraphs (a) to (e).
(2) No land may be entered, or equipment placed or left on or removed from the land under paragraph (1), unless at least 7 days' notice has been served on every owner and occupier of the land.
(3) Any person entering land under this article on behalf of the Executive—
(a)shall, if so required, before or after entering the land produce written evidence of his authority to do so; and
(b)may take with him such vehicles and equipment as are necessary for the purpose of exercising any of the powers conferred by paragraph (1).
(4) No trial hole shall be made under this article in a carriageway or footway without the consent of the street authority, but such consent shall not be unreasonably withheld.
(5) The Executive shall make compensation for any damage occasioned, by the exercise of the powers conferred by this article, to the owners and occupiers of the land, such compensation to be determined, in case of dispute, under Part I of the 1961 Act.