List experience that relates to the qualifications as required on the job announcement. You may complete an on-line application at the Contra Costa Human Resources Department at 651 Pine St., 2nd Floor, Martinez, CA 94553.An incomplete application packet may disqualify an applicant. You can contact the organization or visit their website to check if they will accept a paper application. Sample Job Application. Should I got to Contra Costa College or Berkeley City College if I'm planning to transfer to a UC within 2 years? Each application becomes available on October 1 one year prior to the academic year, with a filing deadline of June 30 at the end of the academic year. All applicants will have an opportunity to upload transcripts when completing our online application process. Cover letter explaining your interest in the position.