20(1)The requirements set out in paragraphs 21 to 23 shall be conditions of the deemed planning permission, so far as relating to relevant development in the area of a county council which is a qualifying authority for the purposes of this Schedule.
(2)For the purposes of sub-paragraph (1), relevant development is development consisting of—
(a)the disposal of waste or spoil, or
(b)the excavation of bulk materials from borrow pits.
(3)The requirement set out in paragraph 24 shall be a condition of the deemed planning permission, so far as relating to development in the area of a county council which is a qualifying authority for the purposes of this Schedule.