Colorado Revised Statutes Title 13. Courts and Court Procedure § 13-25-115. Certificate of head officer

Where a subpoena is issued to a state agency of an executive department seeking an appearance in any court of record, and the evidence sought is proof of the absence of a public record or entry, or the foundation for or the authenticity of the documents which are otherwise admissible pursuant to the Colorado rules of evidence, such subpoena may be complied with by the submission of the documents under the official certificate of the head officer, or acting head officer, or official custodian acting under the authority of the head officer of any executive department of the government of the state of Colorado, as provided for in this section, without an appearance by the personnel of such agency. Nothing in this section shall be construed to restrict the right of any party to any legal proceeding to subpoena a state employee to testify to matters going beyond the foundation or authenticity of the records of the executive department.