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.Sample Cover Letter. All notices related to County recruitments for which you have applied will be sent via email. Thank you for your interest in applying for the tenure-track faculty position in Art at DVC! An outline of the employment process in this District appears below; each letter corresponds to a step in the process. No library card required. A cover letter of 300 words or less, explaining why you are the ideal candidate for the students at Contra Costa College. Written Examination: Candidates that possess the minimum qualifications will advance in the recruitment process for Deputy Sheriff Recruit. I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to be joining XYZ Corporation in Chicago.