The furnishing of a performance guarantee in favor of the Township in an amount not to exceed 120% of the cost of the installation of only those improvements required by an approval or developer's agreement, ordinance, or regulation to be dedicated to a public entity, and that have not yet been installed, which cost shall be determined by the Township Engineer according to the method 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, street lighting, street trees, surveyor's monuments, as shown on the final map, water mains, sanitary sewers, community septic systems, drainage structures, public improvements of open space, and any grading necessitated by the preceding improvements.