If this chapter shall be held to be invalid, unconstitutional or void in its entirety, then the zoning ordinances and land subdivision ordinances which were effective immediately prior to the adoption of this chapter shall be deemed to be the Land Use and Development Ordinances for the Borough of Keyport. The various provisions of this chapter are deemed to be severable and if any section, sentence, clause or phrase is found to be invalid, unconstitutional or void, the balance of the chapter shall remain in effect.