(1)
Where the right of user in any land has vested in the Central Government or in any State Government or Corporation under section 6—
(i) it shall be lawful for any person authorised by the Central Government or such State Government or Corporation, as the case may be, and his servant and workmen to enter upon the land and lay pipelines or to do any other act necessary for laying of pipelines:
(a) any land which, immediately before the date of the notification under sub‑section (1) of section 3, was used for residential purposes;
(b) any land on which there stands any permanent structure which was in existence immediately before the said date;
(c) any land which is appurtenant to a dwelling‑house; or
(d) any land at a depth which is less than one metre from the surface; ***
(2)
If any dispute arises with regard to any matter referred to in paragraph (b) or paragraph (c) of the proviso to clause (i) of sub-section (1), the dispute shall be referred to the competent authority whose decision thereon shall be final.