Annual posting of the ordinance codified in this chapter shall serve as general notice to all property owners. In addition, the City shall give written notice of a first violation to the property owner in each calendar year. Notice shall give the property owner one week (seven days) to mow the property, and failure to comply shall result in the City mowing the property as provided in Section 52.03 of this chapter. The City shall not be required to give more than one written notice to a property owner in a calendar year. Any billings for mowing done by the City or its agents are to be sent by regular mail and shall become delinquent 30 days after mailing.