The owner or holder of all radioactive isotopes or materials containing radioactive isotopes within the City shall disclose the location thereof to the Fire Department and register such radioactive isotopes or materials and state the quantity thereof. The owner or holder of radioactive isotopes or materials containing radioactive isotopes shall identify and register all personnel responsible for such materials with the Fire Department where such radioactive isotopes or material containing radioactive isotopes are located within any building in the City. The owner or holder of radioactive isotopes or materials containing radioactive isotopes shall disclose in writing to the Fire Department the type of isotopes involved therein with technical description of characteristics of such materials. The failure to register such materials as required in this section shall constitute a misdemeanor. (Code 1981 § 16-59. Code 1995 § 70-58.)