At the time of original approval, no facility shall be located within one thousand (1,000) feet of another such facility or of a halfway house, a convalescent home, nursing home, retirement home, school, church, a children's nursery or a day care home, however, the County Council shall have the authority to waive this requirement, provided that the facilities are separated by a County classified principal street, railroad track, major waterway or other comparable manmade or natural barrier; and