Performance guarantees shall be for the cost of installation of those on-tract improvements required by the approval or developer's agreement to be dedicated to the Township or other public entity, and that have not yet been installed, which cost shall be determined by the municipal engineer, according to the method of calculation set forth in N.J.S.A. 40:55D-53.4, for the following improvements as shown on the approved plans or plat: streets, pavement, gutters, curbs, sidewalks, streetlighting, street trees, surveyor's monuments, as shown on the final map and required by "the map filing law," or by N.J.S.A. 46:26B-1 through N.J.S.A. 46:26B-8, water mains, sanitary sewers, community septic systems, drainage structures, public improvements of open space, and any grading necessitated by the preceding improvements as well as privately owned perimeter buffer landscaping as required by ordinance or imposed as a condition of approval for each section or phase of the development (hereafter sometimes referred to as "required improvements").