A person who is called on for assistance in an emergency has the immunity from civil liability or penalty described under § 5-617 of the Courts and Judicial Proceedings Article as a result of assistance or advice rendered in:

1. (1) Mitigating the effects of an actual or threatened discharge of a hazardous substance or material;
2. (2) Preventing a discharge of a hazardous substance or material;
3. (3) Cleaning up a discharge of a hazardous substance or material; or
4. (4) Attempting any of the acts in this subsection.

Added by Acts 1984, c. 228. Amended by Acts 1990, c. 546, § 3; Acts 1997, c. 14, § 20, eff. April 8, 1997.