Forms and Notices for Leave of Absences. Defendant's Request and Declaration to Vacate Civil Assessment, Local.The notice should state the date, date of move out, tenant and owner name and address. II. Reason for requesting Optional Catastrophic Leave. Leave may be granted for any of the following reasons. If you are interested in porting out to another area, please complete a Portability Request Form, also available in our office lobby. Welcome to Contra Costa County's on-line application process! How do I obtain the application for a Community Event? How do I safely dispose of my unwanted medications? Days of bereavement leave.