In cases where a builder or developer desires to install sewers, laterals and building sewers to every housing unit and/or lot within a housing development prior to their individual sale, he shall meet all conditions as set forth in this section and in other sections of this chapter and Ordinance No. 73, 5-11-1977, known as the "Spring Garden Township Subdivision and Land Development Ordinance" (Chapter
275). Plot plans for such a development must be submitted to
the Township, which must include a provision for maintenance bond
protecting the Township against defects for two years subsequent to
completion in an amount not less than 20% of the cost of installation
and must also include a covenant to convey to the Township the sewers
so constructed other than building sewers when the said sewers are
connected to the sewer system. Said plans must be approved by the
Township prior to any construction. Sewer plans conforming to all
specifications established by the Township, as to type of pipe, location
of mains, size of pipe, grades, methods, workmanship and the type
and construction of all necessary appurtenances, must be prepared,
approved by the Township and approval obtained from the necessary
state agencies. The engineering fees and charges for permits will
be paid by the builder or developer. In no case will lesser standards
than exist in the sewer system presently constructed and as required
in Township ordinances be permitted for any future extensions. Upon
approval of such plans by the Township, the extensions may be constructed
by and at the expense of the builder or developer, but only under
the inspection of an inspector designated by the Township. The cost
of such inspection, including salaries and expenses, shall be borne
by the builder or developer making the extensions.