A petition to an agency for the issuance, amendment, waiver or repeal of a regulation shall set forth clearly and concisely the interest of the petitioner in the subject matter, the specific regulation, amendment, waiver or repeal requested, and shall cite by appropriate reference the statutory provision or other authority therefor. The petition shall set forth the purpose of, and the facts claimed to constitute the grounds requiring, the regulation, amendment, waiver or repeal. Petitions for the issuance or amendment of a regulation shall incorporate the proposed regulation or amendment.