(a)   Notice of the lien provided for by Section 921.03 may be recorded in the County Clerk's office in the trust and mortgage books. Enforcement of such lien may be made in the same manner as enforcement of a judgment lien and such manner shall be in addition to any other means of enforcement or collection of such expenses that are available to the City.
   (b)   The payment of the amount so chargeable to such owner shall not relieve him of any fine imposed under the provisions of this article or constitute a defense against any violation of the provisions of this article.