18. (1) The Chairman or any member, or any other person authorised by the Chairman in this behalf, may, with or without assistants or workmen, enter into or upon any land in order-(a) to make any inspection, survey, experiment, valuation or inquiry; (b) to dig or bore into the sub-soil;(c) to set out boundaries and intended lines or work;(d) to mark such boundaries and lines by placing marks and cutting trenches; or (e) to do any other thing, whenever it is necessary to do so for any of the purposes of this Ordinance: Provided that no such entry shall be made without giving the occupier of the land at least twenty-four hours' notice of the intention to make such entry. (2) When any person enters upon any land in pursuance of sub-section (1) he shall, at the time of entering or as soon thereafter as may be practicable, pay or tender payment for all necessary damage to be done, and in case of dispute as to the sufficiency of the amount so paid or tendered refer the matter to the Deputy Commissioner whose decision shall be final.