(2) A resolution or ordinance adopted under this section shall authorize the levy and collection of a seepage charge only in an affected area located entirely within a single drainage basin as identified in regional treatment works plans.
(3) A resolution or ordinance adopted under this section shall:
(a) Describe the boundaries of the affected area; and
(b) Contain an estimate of the commencement and completion dates for the proposed treatment works and a proposed schedule for the extension of sewer service into the affected area. [1983 c.235 §2]