(a) The Department of Public Health may issue a subsurface sewage disposal system installer license or a subsurface sewage disposal system cleaner license.
(b) An apprentice's permit shall be issued by said department for the performance of work as a subsurface sewage disposal system installer or cleaner under the supervision of a licensee, upon application of the licensee. Such permit shall be valid for one year and may be renewed for one additional year upon application of the licensee.