on-scene commander definition

on-scene commander means either the National On-Scene Commander or the municipality on-scene commander or the provincial on-scene commander as the case may be;
on-scene commander. (OSC) means the person named in the local oil pollution emergency plan, or the person nominated by the NC in the event of a Tier Two or Tier Three spill, to take command of response actions at the scene of the incident, both at sea and on land. The OSC has overall decision making responsibility for the tactical response to an oil pollution incident and should be supported by appropriate operational, scientific and administrative personnel.
on-scene commander means the person named in the local oil pollution emergency plan, or the person nominated to take command of response actions at the scene of the incident,