Environment Protection Act 1997

The authority may, on written application by a person on whom an order is served under section 91C (1) or section 91D (1) for an extension of the period within which the person must conduct an assessment or remediation—

extend or refuse to extend the period; or

extend the period for a period less than that applied for.

In deciding whether or not to extend the period, the authority must have regard to—

the period of extension for which application is made; and

whether the contamination is causing, or is likely to cause, a significant risk of harm to human health or a risk of material environmental harm or serious environmental harm.