It is the intent of this chapter to set forth the method of recovery of proportional cost shares from those property owners who connect their properties to major sanitary sewer facilities subsequent to their construction, so that in the event that all property, other than street and road right-of-way, which lies within the benefited district is connected to the major sanitary sewer facilities during their expected useful life, then those properties shall bear, in the aggregate, up to 100 percent of the cost for design and construction of such facilities, including legal, administrative, and interest expenses associated therewith.