It shall be unlawful for any person to violate any of the provisions of this title. Any person, firm or corporation, whether as principal, agent, employee, or otherwise, violating or causing the violation of the provisions of this title shall be guilty of an infraction and upon conviction thereof shall be punished by a fine of not more than seven hundred fifty dollars ($750.00). Each and every day a violation occurs shall constitute a separate offense. The person responsible for any illegal sign as established by this ordinance shall be liable for the cost incurred in the removal and abatement thereof and the City is authorized to effect the collection of said cost. Any sign that would have been illegal under any ordinance or regulation existing prior to the enactment of this sign ordinance shall not be grand-fathered in under this ordinance. The City's failure to take appropriate action against violations of this title shall not be a waiver of any of the rights of the City as set forth in this title.