Where personnel from the city police or fire department responding to a loud or unruly event determine that the event can be terminated or otherwise appropriately addressed without arresting or citing the person or persons responsible for the event, such police or fire department personnel may issue a warning to any person responsible for the event in lieu of arresting or issuing a citation to such person or persons for the loud or unruly event. Such warning shall set forth the date and time of the initial response, a brief description of the unlawful activity complained of and/or observed at the event, the address of the property on which the event occurred, and a statement that if city police or fire department personnel are required to respond a second time or a subsequent time to the same address because of the same event or another event within a thirty-day period by reason of the fact that the event continues to be conducted in an unlawful manner or by reason of the fact that future events are loud or unruly events as defined in Section 9.23.030 of this code, such person or persons will be assessed a service fee for the city’s second or subsequent response costs in the amount provided for by this chapter. Such warning shall also state that the service fee, if any, shall be in addition to any criminal fine or other sanction arising out of any arrest of such person or the issuance of a citation to such person as a result of such response or responses. Any person issued a written warning in the manner provided for by this section shall sign the warning acknowledging receipt thereof. At a loud or unruly event where alcohol is served to an underage person or persons in violation of Section 9.23.110 of this code, an administrative citation for violation of Section 9.23.110 may be issued in addition to a warning for the loud or unruly event. (Ord. 4372 § 1, 2006)