I. Commercial applicators may elect to be certified by the department. Applicator certificates shall be issued by the department and may be renewed annually.
II. Any business that employs multiple commercial applicators may obtain a master certificate for the owner or chief supervisor, and commercial applicators employed by the business may obtain either an individual certificate or a subordinate certificate to qualify under the master certificate. Any business holding a master certificate shall ensure that all commercial applicators operating with a subordinate certificate under its master certificate receive the required training and shall provide the required record keeping on behalf of all commercial applicators working under the master certificate.
III. The department shall charge an annual fee for master, individual, and subordinate certificates. Annual fees for a subordinate certificate obtained under a master certificate shall be significantly less than the fees for a master certificate. Annual fees for individual certificates shall be higher than the fee for a subordinate certificate but less than the fee for a master certificate.