(a) Any person who renders assistance or advice concerning an emergency or accident involving threatened discharge of hazardous materials or the cleanup thereof shall not be liable for any civil damages for any acts or omissions at the scene of the emergency or accident in mitigating or attempting to mitigate the actual or threatened discharge of hazardous materials or cleanup thereof.
(b) The immunity provided in subsection (a) shall not apply to any person (1) whose act or omission caused in whole or in part such actual or threatening discharge and who would otherwise be liable therefor; or (2) who receives compensation other than reimbursement for out-of-pocket expenses for services in rendering such assistance or advice.
(c) Nothing in this section shall be construed to limit or otherwise affect the liability of any person for damages resulting from such person's gross negligence or from such person's reckless, wanton or intentional misconduct.