(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 10 miles beyond the paved north end of any runway;
(b) More than 13 miles beyond the paved south end of any runway; or
(c) More than two miles from the centerline of any runway 10 miles north and 13 miles south from the paved end of such runway.
(2) Areas within which a port district may undertake a program authorized in this chapter shall be known as "impacted areas."