10.—(1) This paragraph applies where—
(a)any person is carrying on, or proposing to carry on, any activity on or in the ground, and
(b)that activity might lead to a discharge mentioned in paragraph 3(1)(a), (b) or (c).
(2) The regulator may serve a notice on the person requiring the person, from the date the notice takes effect, to hold an environmental permit authorising the carrying on of the activity.
(3) A notice under sub-paragraph (2) takes effect on the date specified in it, but—
(a)a notice served for the purpose of paragraph 11 must not take effect until at least 6 months after it is served, and
(b)a notice served for the purpose of paragraph 12, or for any other purpose, must not take effect until at least 3 months after it is served.