If the city is required to respond to an unruly gathering, the following persons shall be jointly and severally liable for civil penalties as set forth in section 9.40.060, in addition to liability for any injuries to city personnel or damage to city property:
A. The person or persons who own the property where the unruly gathering took place; provided, that notice has been mailed to the owner of the property as set forth herein and a subsequent unruly gathering occurs at least (14) fourteen days after the mailing of such notice.
B. The responsible person or persons; provided, however, that if the responsible person is a juvenile, then the parents or guardians of the juvenile will be jointly and severally liable for penalties and liabilities herein.
C. Any persons in attendance at and engaging in conduct contributing to the unruly gathering as set forth in section 9.40.030.B.
D. Nothing in this section shall be construed to impose liability on a property owner or responsible person for the conduct of persons who are present without the express or implied consent of the property owner/responsible person as long as the property owner/responsible person has taken reasonable steps, including but not limited to requesting police assistance to exclude such uninvited participants from the property. Where an invited person engages in conduct which the property owner/responsible person could not reasonably foresee and the conduct is an isolated instance of a person at the gathering violating the law which the property owner/responsible person is unable to reasonably control without the intervention of the police, the unlawful conduct of that person shall not be attributable to the property owner/responsible person for the purposes of determining whether the gathering constitutes an unruly gathering.
(Ord. 2473 §3(part))