66.— (1) (a) A person causing or permitting a discharge to which a licence under section 63 relates may, before the expiration of such period as may be prescribed, appeal to the Board in relation to—

(i) the revocation of the licence,

(ii) the attachment of conditions or additional conditions to the licence, or

(iii) the amendment or deletion of any condition attached to the licence,

by a water services authority.

(b) A person whose application for a licence under section 63 has been refused by a water services authority may, before the expiration of such period as may be prescribed, appeal to the Board in relation to the refusal.

(c) An act of a water services authority referred to in paragraph (a) or (b) shall have effect—

(i) in case an appeal is not brought against it, upon the expiration of the period referred to in paragraph (a) or (b), as the case may be,

(ii) in case an appeal is brought against it and the final determination of the appeal does not set the act aside, upon and in accordance with such final determination, or

(iii) in case an appeal is brought against it and the appeal is withdrawn, upon the withdrawal of the appeal.

(2) The Board, after consideration of an appeal under this section, shall either, as it thinks proper, allow or refuse the appeal in whole or in part, or, give appropriate direction to the water services authority concerned relating to the granting or refusal of a licence, or the attachment, amendment or deletion of conditions, and a water services authority shall comply with any such direction.