All conditions in violation of Sections 29.20.010 and 29.20.020 of this Title constitute a nuisance. Any person whose duty it is to correct such conditions and who fails to do so will be subject to charges according to the Fee Schedule approved by the City Council. In cases where the City Administrator determines that it is necessary to take immediate action in order to meet the purposes of this Title, summary abatement of such nuisances is authorized.