(1) If the nuisance described in the notice has not been removed or abated within the time allowed, or cause shown as specified in Section 5.525, the City Manager or his agent shall cause the nuisance to be abated.

(2) Notwithstanding other provisions of this code, whenever, in the judgment of the City Manager or his agent, there is reasonable cause to believe that a clear and immediate danger to the public health, welfare, or safety or to the environment exists from the public nuisance, the City Manager or his agent without hearing or prior notice may cause the summary abatement of such public nuisance.

(3) The City Manager or his agent shall cause a record to be kept of the cost incurred in abating the nuisance, including administrative charges as established in the most recent fee schedule approved by resolution of the City Council, and shall file a statement of costs with the City Recorder, who may then assess the costs on the property as provided in Section 5.535.