To amend the Philadelphia Zoning Maps by changing the zoning designations of certain areas of land located within an area bounded on the northeast by the Manayunk Canal, on the southeast by Green Lane, on the southwest by the Schuylkill River, and on the northwest by Leverington Avenue with a straight line extending from Leverington Avenue to the Schuylkill River. Further to approve the Residential Mixed-Use-2 District (RMX-2) Master Plan for the foregoing designated areas of land. Further, to amend certain provisions of Section 14-503 of the Philadelphia Code in connection with the foregoin — Open Common Ground