AN ORDINANCE TO AMEND CHAPTER 99, ARTICLES I, III, IV, V AND VI SECTIONS 99-5, 99-6, 99-23, 99-26, 99-27, 99-30, 99-31 AND 99-32 AND BY ADDING A NEW SECTION 99-21A , AND CHAPTER 115, ARTICLES IV, V, VI, VII, VIII AND XXVIII SECTIONS 115-20, 115-25, 115-29, 15-37, 115-45, 115-53 AND 115-28 REGARDING PERIMETER BUFFERS AROUND RESIDENTIAL DEVELOPMENT