17 CAR § 66-507
(a) The Committee of Plumbing Examiners may, on its own motion or upon a complaint in writing duly signed and verified by the complainant, suspend or revoke any Restricted Gas Fitter Plumber’s License or gas utility license if it has reason to believe that the holder of such license has:
(b) The use of a Restricted Gas Fitter Plumber’s License or gas utility license to do plumbing other than permitted by the license shall be grounds for automatic suspension and/or revocation of such license by the Committee of Plumbing Examiners: