You may complete an on-line application at the Contra Costa Human Resources Department at 651 Pine St., 2nd Floor, Martinez, CA 94553. You can upload electronic copies of required documents during the on-line application process.Information and links to various college resources for college employees including faculty, staff and management. When you find a new place to rent, you and your new landlord must fill out the Request for Tenancy Approval (RTA) form in your packet and send it to us. The Contra Costa County Probation Department is seeking qualified individuals to fill vacancies for the position of Juvenile Institution Officer I. The Civil Unit staff is made up of both sworn and non-sworn staff. I moved in or out of Contra Costa County, how do I transfer my case? West Contra Costa Unified School District Logo. If you want a copy of the criteria or guidelines that the health plan used to make its decision, contact Member Services.