The Planning Board may impose conditions in addition to those required to ensure that the intent of this chapter and the Site Plan Ordinance regulations are satisfied. These may include, but are not limited to, harmonious design of buildings, aesthetics, planting and its maintenance as a sight or sound screen, landscaping, hours of operation, lighting, numbers of persons involved, noise, sanitation, safety, smoke and fume control and the minimizing of noxious, offensive or hazardous elements.