Authorizing the revision of lines and grades on a portion of City Plan No. 58 by striking from the City Plan and vacating Melon Street from Ridge Avenue to Thirteenth Street and by reserving and placing on the City Plan a right-of-way for drainage and water main purpose, by striking from the City Plan and vacating a portion of Park Avenue and abandoning a certain right-of-way for drainage and water main purposes, all under certain terms and conditions. — Open Common Ground