Article 21 Power to survey and investigate land
The Executive may, in relation to any land falling within article 23(1)(a) below, for the purposes of this Order—
survey or investigate that land;
without prejudice to the generality of sub-paragraph (a) above, make trial holes in such positions as the Executive thinks fit on the land to investigate the nature of the surface layer and subsoil and remove soil samples;
without prejudice to the generality of paragraph (a) above, carry out archaeological investigations on the land;
place on, leave on and remove from the land apparatus for use in connection with the survey and investigation of the land and making of trial holes under sub-paragraphs (a) to (c) above; and
enter on the land for the purpose of exercising the powers conferred by sub-paragraphs (a) to (d) above.
No land may be entered, or equipment placed or left on or removed from the land under paragraph (1) above, unless at least 7 days' notice has been served on every owner and occupier of the land.
Any person entering land under this article on behalf of the Executive—
shall, if so required, before or after entering the land, produce written evidence of his authority to do so; and
may take with him such vehicles and equipment as are necessary to carry out the survey or investigation or to make the trial holes.
No trial holes 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.
The Executive shall pay 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 Land Compensation Act 1961.