Conn. Agencies Regs. § 19a-9-12
Any interested person may submit a request to the agency for a declaratory ruling regarding the validity of any regulation, or applicability to specified circumstances of a provision of the general statutes, a regulation, or a final decision on a matter within the jurisdiction of the agency. The submittal shall conform to the requirements of subsection 19a-9-6(a), and a copy shall be sent to any person that the requester knows or has reason to believe may be substantially affected by the declaratory ruling. It shall contain a detailed statement of the person's interest in such matter and the facts relevant thereto, and the names and addresses of persons to whom it was sent. The agency may request the submission of such additional facts as it deems necessary, and may conduct a hearing.
Conn. Agencies Regs. § 19a-9-12