To amend the Philadelphia Zoning Maps by changing the zoning designations of certain areas of land located within an area bounded by Cecil B. Moore Avenue, 11th Street, Montgomery Avenue and 12th Street; amending Section 14-1402 of The Philadelphia Code, entitled "Parking in Residential Districts;" and by amending Section 14-305 of The Philadelphia Code, entitled "C-4 Commercial and C-5 Commercial Districts," all under certain terms and conditions. — Open Common Ground