Conn. Gen. Stat. § 4-174

Any interested person may petition an agency requesting the promulgation, amendment, or repeal of a regulation. Each agency shall prescribe by regulation the form for petitions and the procedure for their submission, consideration, and disposition. Within thirty days after submission of a petition, the agency either shall deny the petition in writing stating its reasons for the denials or shall initiate regulation-making proceedings in accordance with section 4-168 .