Authorizing the revision of lines and grades on a portion of City Plan No. 27-S by striking from the City Plan the easterly twenty feet wide portion of Swanson Street from Wolf Street to Snyder Avenue, striking from the City Plan and vacating the legally open portion of Vandalia Street from Wolf Street to Weccacoe Avenue, and reserving and placing on the City Plan a right-of-way for sewer and drainage purposes within the portion of Swanson Street being stricken and authorizing acceptance of the grant to the City of the said right-of-way, all under certain terms and conditions, including the de