(1) This section applies if a responsible person for a dangerous substance has been given an improvement notice.
(2) An inspector may, by written notice given to the responsible person, extend the compliance period for the improvement notice on the inspector's own initiative or if asked by the responsible person.
(3) However, the inspector may extend the compliance period only if the period has not ended.
(4) In this section:
"compliance period" means the period stated in the improvement notice under section 101 (2) (c), and includes that period as extended under this section.