If the Minister is satisfied that there is a significant risk that any of the key petroleum operations to which an application for approval under section 78 relates will have a significant adverse impact on—
(a) operations for the injection of a greenhouse gas substance; or
(b) operations for the storage of a greenhouse gas substance—
that are being, or could be, carried on under an existing greenhouse gas injection licence or an existing cross‑boundary greenhouse gas injection licence, the Minister must not give the approval under section 78 unless the registered holder of the greenhouse gas injection licence or cross‑boundary greenhouse injection licence has agreed, in writing, to the applicant carrying on the key petroleum operations in respect of which the Minister is so satisfied.