(1) Counties with metropolitan forms of government in which a metropolitan airport authority has been created pursuant to § 42-4-104 are hereby authorized to establish airport noise mitigation programs to minimize the impact of noise from airport operations on surrounding properties located within the area of the metropolitan government. Such airport noise mitigation programs may include sound insulation programs, purchase assistance programs, grant or loan programs or payment of compensation to property owners whose properties are adversely affected by airport noise. Notwithstanding any law to the contrary, the expenditure of public funds to implement such a noise mitigation program shall be for the public purpose of protecting the health, safety and welfare of the citizens of the metropolitan government.
(2) No state funds shall be obligated or expended to implement this section.