Whenever the Authority shall determine that the cost
of any sewer for which a design is in progress or is planned for which
a benefit assessment is to be made shall include a portion of the
cost of a sewer previously constructed which was paid for, either
in all or in part, by the Town, said Authority shall determine the
proportion of previously deferred excess costs of such sewer which
will benefit properties served by the sewer being planned and shall
include such costs in the cost of the sewer being designed, constructed
or extended for the purpose of determining the amount of the assessment
to be levied against the aforesaid properties; subject, however, to
the rights of notice, hearing appeal or such other right conveyed
by this chapter or sections of the General Statutes of the State of
Connecticut as may be applicable.