Response usually begins with the responsible person (spiller) and escalation occurs if necessary.
The provincial government must be prepared to take over an incident should the responsible person be unknown or be unable to fulfill its response obligations as set out in section 91.2 of the Environmental Management Act.
Section 91.2 of the Environmental Management Amendment Act contains a list of actions a responsible person must take to address a spill that has occurred or is at imminent risk of occurring: