§ 150.074 CANCELLATION OF REGISTRATION.
   (A)   Grounds for cancellation. The Clerk-Treasurer shall cancel the registration of any plumbing contractor for any fraud or deceit by the contractor in obtaining it, or for any misconduct by him in the practice of plumbing, or for the violation of any provisions of this code or of any other ordinance concerning plumbers, plumbing, street excavations and paving repairs; the Clerk-Treasurer may also cancel the registration if the registrant ceases to engage in the business of being a plumbing contractor. ('79 Code, § 4-75)
   (B)   Appeal. 
      (1)   Any plumbing contractor whose registration with the Clerk-Treasurer has been canceled may appeal from that action by filing a request with the Mayor for a hearing upon the charges upon which his registration was canceled.
      (2)   The Mayor shall fix a date for and shall hold a hearing on the charges with the date of the hearing being not less than five days or more than 30 days from the time when the request for a hearing was filed. ('79 Code, § 4-76)
   (C)   Right of contractor at hearing. At the hearing before the Mayor on the cancellation of a plumbing contractor's registration, the plumbing contractor shall have the right to appear and be represented by counsel, to cross-examine witnesses against him, and to produce evidence in his defense. ('79 Code, § 4-77)
   (D)   Actions of Mayor. If, after the required hearing before the Mayor on the cancellation of a plumbing contractor's registration, the Mayor finds that the charges against the plumbing contractor are sustained, he shall confirm its suspension or cancellation. ('79 Code, § 4-78)
   (E)   Reinstatement. Any person whose plumbing contractor's registration with the Clerk-Treasurer has been canceled or suspended shall not be allowed to be re-registered with the Clerk-Treasurer except upon the written recommendation of the Mayor. ('79 Code, § 4-79)