(1)  This section applies subject to section 42ZK .

(2)  An environmental licence that is granted or renewed takes effect on the day on which the licence document in relation to the licence is served under section 42ZB(1) on the holder of the environmental licence.

(3)  The variation of an environmental licence under section 42N , 42P or 42Q takes effect on the day on which the licence document in relation to the licence, as so varied, is served under section 42ZB(1) on the holder of the environmental licence.

(4)  On the day on which a copy of a licence document in relation to an activity is served under section 42ZB(1) on a person to whom the environmental licence to which the licence document relates is transferred –

(a) the environmental licence specified in the licence document takes effect; and

(b) the previous environmental licence, in relation to the activity, that was in force immediately before that day, ceases to have effect.

(5)  Subject to this Act, an environmental licence remains in force from the day on which it takes effect until –

(a) if a period for which the licence is to remain in effect is specified in the licence document in relation to the licence – the day on which that period expires; or

(b) if the licence is surrendered – the day on which the licence ceases under section 42ZH to have effect; or

(c) the day on which a subsequent licence in relation to the activity that is issued under section 42ZB(1) takes effect; or

(d) the day on which notice of the cancellation of the licence is served on the holder of the licence –

whichever occurs first.