If any plumber shall neglect or refuse to do anything required by these rules and regulations, or to repair any settlement of his trenches within a reasonable time after being notified by the Municipal Manager to do so, the Municipal Manager may cause such work to be done and charge the same to the plumber, and unless such charges are paid, the plumber's license shall be revoked forthwith. (Ord. 1990-08. Passed 8-21-90.)