Protection of the Environment Operations Act 1997

(5) Without limiting subsection (1)(c) or (3)(c), the costs and expenses incurred by the appropriate regulatory authority in connection with a matter associated with or incidental to a matter referred to in subsection (1)(a) or (b) or (3)(a) or (b) include costs and expenses incurred in connection with an associated matter before the clean-up notice or prevention notice was given.