Authorizing the revision of lines and grades on a portion of City Plan No. 269 by striking from the City Plan and vacating the southwesterly footway area of East Service Drive from a point approximately eighteen feet northwest of Health Sciences Drive to a point approximately two-hundred twenty-seven feet further northwestwardly therefrom, striking from the City Plan and vacating the northwesterly footway area of Health Sciences Drive from a point approximately one-hundred sixty-six feet southwest of East Service Drive to a point approximately three-hundred thirteen feet further southwestwardl — Open Common Ground