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, pumping stations, drainage structures and such other improvements as may be found to be necessary in the public interest (including recreational facilities) shall be installed at the expense of the developer and shall be completed to the satisfaction of the Borough Engineer before a certificate of occupancy may be issued. In lieu of total completion of landscaping improvements only, an adequate performance bond properly guaranteeing the completion may be accepted. Such bond value will be set at the time of posting and will be held by the Borough Clerk of the Borough of Lake Como, after approval by the Borough Attorney as to form and surety, for a period of no more than one year, during which time the landscaping improvements shall be completed, or the bond will be forfeited.