A notice under subsection 486F(1) or 486G(1) must not be given to a person if the person is, or has been, a lawyer for:
(a) if the notice relates to the investigation or prevention of an offence against an environmental law--the person suspected of having committed the offence; or
(b) if the notice relates to the investigation or prevention of a contravention of an environmental penalty provision--the person suspected of having contravened the provision.