To amend the Philadelphia Zoning Maps, by changing the zoning designation of a certain area of land located in the 8th Ward and within the area bounded by Spruce street, South Fifteenth street, Latimer street, and a line parallel to and one-hundred ten feet west of South Fifteenth street from Class "C-4" Commercial to Class "C-5" Commercial and exempting this area of land from certain provisions of Section 14-305 of The Philadelphia Code entitled "C-4" and "C-5" Commercial in order to permit the construction of a parking garage adjacent to the new Regional Performing Arts Center and to facilit — Open Common Ground