14. Every consent shall include conditions to the effect that –
(a)work in relation to the relevant project shall be commenced within such period (not being more than 5 years beginning with the date consent is granted) as is specified in the consent; and
(b)no work shall be carried out in relation to the relevant project after the expiration of such period (not being more than 10 years beginning with the date consent is granted) as is specified in the consent.