The developer shall install, at his sole expense, the following minimum site improvements: streets, accessways, off-street parking areas, sidewalks, street-lighting, storm drainage facilities, landscaping and open space areas. These improvements shall be installed in accordance with this chapter unless a specific waiver is granted as provided for within the applicable standards or requirements. Whenever a developer is required to place catch basins as part of an approval, the Planning Board shall, in its discretion, require the developer to pay for and place a sign at each such catch basin setting forth the requirements and penalties of §§ 220-23 to 220-26 of the Code of the City of Brigantine.