All streets, both internal and external (including grading and paving), driveways, parking areas, sidewalks, curbs, gutters, street lighting, shade trees, water mains, water systems, culverts, storm sewers, sanitary sewers, drainage structures, and other such improvements as may be found necessary for the health, safety and welfare of the public and in the public interest shall be installed at the expense of the developer and shall be completed to the satisfaction of the Township Engineer before a certificate of occupancy may be issued. In lieu of total completion of landscaping improvements only, an adequate performance guarantee posted in accordance with the provisions of § 142-63 of this chapter may be accepted for a period of not more than one year, during which each such landscaping improvement shall be completed or the guarantee will be forfeited.