The City or their agents may mow any property, which is not mowed by the above dates, and a charge of $75.00 per hour for such mowing, plus a surcharge of $100.00, will be charged to the properly owner. Any property owners who fail to mow their properties, thus allowing the same to be mowed by the City or their agents, and who do not provide payment for the mowing within 30 days as required, will be assessed by the City for such costs, which will be collected in the same manner as general property taxes.