Authorizing and directing the revision of lines and grades on a portion of City Plan Nos. 146 and 271 within an area bounded by Delaware Avenue, Shackamaxon Street, a right of way for sewer maintenance within the lines of former Shackamaxon Street, the Pierhead Line of the Delaware River, a certain property line approximately 99 feet northeast of Ellen Street, Penn Street, and Ellen Street, under certain terms and conditions. — Open Common Ground