The boundary lines of the B-2 Turnpike District shall be as delineated by "Supplemental Map No. Five to the Zoning Map of the Borough of Ramsey, New Jersey, dated April 9, 1968," prepared by the office of the engineer for the Borough and which supplemental map shall accompany this chapter and is hereby made a part thereof. In addition to delineating the boundary lines for the aforesaid B-2 Turnpike District, the "Supplemental Map No. Five" is hereby deemed to amend the boundaries of the R-3 Residence District and to otherwise amend the Borough Zoning Map as otherwise shown thereon.