172Powers of entry for other purposes
(1)Any person designated in writing for the purpose by either of the Ministers or the Authority may enter any premises or vessel for the purpose of—
(a)determining whether, and if so in what manner, any power or duty conferred or imposed on either of the Ministers or on the Authority by virtue of any enactment to which this section applies (including a power of either or both of the Ministers to make subordinate legislation) should be exercised or, as the case may be, performed; or
(b)exercising or performing any power or duty which is so conferred or imposed.
(2)Any person designated in writing for the purpose by either of the Ministers or the Authority may—
(a)carry out such inspections, measurements and tests on any premises or vessel entered by that person under this section or of any articles found on any such premises or vessel; and
(b)take away such samples of water or effluent or of any land or articles,
as that Minister or the Authority considers appropriate for any purpose mentioned in subsection (1) above and has authorised that person to carry out or take away.
(3)The powers which by virtue of subsections (1) and (2) above are conferred in relation to any premises for the purpose of enabling either of the Ministers or the Authority to determine whether or in what manner to exercise or perform any power or duty conferred or imposed on him or it by or under the water pollution provisions of this Act shall include power, in order to obtain the information on which that determination may be made—
(a)to carry out experimental borings or other works on those premises; and
(b)to install and keep monitoring and other apparatus there.
(4)This section applies to any enactment contained in this Act and to any other enactment under or for the purposes of which the Authority carries out functions.