In issuing a notice of hearing, the executive director or any lawful delegatee will designate as parties those persons and entities known to them whose legal rights, duties or privileges are being determined in a contested case and any person whose participation as a party is then deemed necessary to the proper disposition of such proceeding. All other persons proposing to be named or admitted as parties shall apply for such designation in the manner herein after described. No other person or entity shall be or have standing before the commission as a party within the definition of section 4-166(8) of the Connecticut General Statutes.
Conn. Agencies Regs. § 10-392-18