Instructions to the Applicant. The information you provide in this Personal History Statement will be used in the background investigation.Records personnel process requests for information regarding police reports and out-of-custody inmate inquiries. The Contra Costa County Office of the Sheriff is seeking men and women interested in an exciting and challenging career in law enforcement. List experience that relates to the qualifications as required on the job announcement. Many schools offer career-guidance tools. These tools can assist you in finding out how your interests and skills fit with careers and college. The instructors are experts in their field of instruction and offer on the job experience coupled with specialized training in the field. Any such changes will be announced in a published addendum. The EBRPD Police Department serves and patrols EBRPD's 73 Regional Parks in Alameda and Contra Costa counties which host 25 million visits a year.