Taking of emergency action. If, in the opinion of the Code Enforcement Officer, a violation exists which requires immediate action to avoid a direct hazard or imminent danger to the health, safety or welfare of occupants of a building, or to other persons, the Code Enforcement Officer shall direct that such violation be immediately remedied or shall take direct action on his own initiative to abate the hazard or danger. Any costs incurred by such action shall be paid for by the owner, occupant or person responsible for the violation. The Code Enforcement Officer shall keep on file an affidavit stating with fairness and accuracy the items of expense and date of execution of action taken. The Code Enforcement Officer is furthermore authorized to institute a suit, if necessary, against the person liable for such expenses or place a lien against property, in order to recover said costs.