This Chapter of the New Hampshire Revised Statutes concerns salt applicator certification option. It provides that commercial applicators may elect to be annually certified by the department. Applicator certificates shall be issued by the department of environmental services. 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 certificates to qualify under the master certificate. Any business holding a master certificate shall ensure that all commercial applicators operating under its master certificate receive the required training and shall provide the required recordkeeping on behalf of all commercial applicators. Annual fees for certificates obtained under a master certificate shall be significantly less than the fees for a master certificate.