§7–229.

    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)    Mitigating the effects of an actual or threatened discharge of a hazardous substance or material;

        (2)    Preventing a discharge of a hazardous substance or material;

        (3)    Cleaning up a discharge of a hazardous substance or material; or

        (4)    Attempting any of the acts in this subsection.