B.7 Development is permitted by Class B(f) subject to the following conditions—E+W
(a)that waste materials are not brought on to the land from elsewhere for deposit unless they are for use in works described in Class B(a), (d) or (e) and are incorporated forthwith into the building or works in question; and
(b)that the height of the surface of the land will not be materially increased by the deposit.