In addition to the penalties established by this Chapter, any threat to public health, safety or welfare shall be declared and deemed a public nuisance. Such public nuisance may be summarily abated and/or remedied by the City Engineer, and/or civil action to abate, enjoin or otherwise compel the cessation of such nuisance may be taken by the City Attorney. The cost of such abatement, remediation and/or restoration shall be borne by the owner, lessee or tenant of the property causing the violation. The cost thereof shall be a lien upon and against the property and such lien shall continue in existence until the same shall be paid.