An individual may not practice as an environmental health specialist in the State unless the individual is: Licensed by the Board; Employed under a valid environmental health specialist-in-training certificate issued by the Board; or Participating in an apprenticeship approved by the Board. An individual may not practice as an environmental health specialist under an environmental health specialist-in-training certificate for more than a total of 3 years, unless approved by the Board in accordance with COMAR 10.60.02.05B. Pursuant to Health Occupations Article, §21–401, Annotated Code of Maryland, unless an individual is licensed under this chapter, an individual may not use the title “environmental health specialist” or “licensed environmental health specialist” or the initials “E.H.S.” or “L.E.H.S.” after the name of the individual or any other title with the intent to represent that the individual is licensed to practice as an environmental health specialist.