Authorizing and directing the revision of lines and grades on a portion of City Plan No. 271 of an area bounded by Girard avenue, Hancock street, Wildey street, Germantown avenue, New Market street, Laurel street and Second street by striking from the City Plan and vacating Germantown avenue from Second street to Wildey street; by striking from the City Plan and vacating Hancock street from Pollard street to Germantown avenue; by striking from the City Plan and abandoning a certain right-of-way for drainage purposes and water main purposes; by striking from the City Plan and abandoning a certa — Open Common Ground