A responsible party shall pay the emergency response charges within thirty (30) days of the issuance of an invoice by the city. An emergency response charge that is unpaid after thirty (30) days from the issuance of an invoice by the city bears interest at the rate of one percent (1%) per month. Failure to pay an emergency response charge within thirty (30) days of the issuance of an invoice by the city shall be punishable by a fine not to exceed one thousand dollars ($1,000.00). Every day that any portion of an emergency response charge remains unpaid shall constitute a separate and distinct offense. (Ord. O-20-2015, 9-14-2015)