(1) Prior to initiating programs as authorized in this chapter, the port commission shall undertake the investigation and monitoring of aircraft noise impact to determine the nature and extent of the impact. The port commission shall adopt a program of noise impact abatement based upon the investigations and as amended periodically to conform to needs demonstrated by the monitoring programs. In no case may the port district undertake any of the programs prescribed in this chapter in an area that is:

(a) More than ten miles beyond the paved north end of any runway;

(b) More than thirteen miles beyond the paved south end of any runway; or

(c) More than two miles from the centerline of any runway ten miles north and thirteen miles south from the paved end of such runway.

(2) Such areas as determined in this section, shall be known as "impacted areas."