For those main extensions constructed and installed prior to the passage of this chapter, hookup charges and refunds shall be calculated per front-foot and per square foot of the parcel(s) of property served as set forth in Chapter 3.35 PMC. [Ord. 3608 § 28, 2003; Ord. 2961 § 12, 1993; Code 1970 § 13.44.011.]