99.—(1) The reservoir manager of a controlled reservoir must, on being requested by the Department, provide the Department with such information and assistance as it may reasonably seek in connection with the exercise of its powers and duties under this Act.
(2) The reservoir manager in particular—
(a)must, on being requested by the Department, make available to it the records referred to in section 98(2)(a),
(b)must, on being so requested, provide the Department with such further information or particulars as the Department may require, in such form and manner and within such period of time, as the Department may by notice served on the reservoir manager require.