parking fines are payable in person in the office of the clerk , city hall , on weekdays from 9:00 to 5:00 p.m. notice of intent to contest any violation must be delivered to the court , either in person or by mail , within ten days of the summons . all fines are doubled if not paid within 30 days of the issuance of the summons and nonotice of intent to contest is failed . fine must be paid in cash . no personal checks or credit cards will be accepted