15. The undertaker shall remove—
(a)Work No. 1 (except that, in relation to the two piles, it shall only remove as much as is practicable); and
(b)Works Nos. 2 and 3,
no later than three years after the date on which this Order is made and shall, subject to the exception in paragraph (a), restore the sites of the works to their former condition, subject to natural change.