52 Pa. Code § 5.43 : PUBLIC UTILITIES — PUBLIC UTILITY COMMISSION — GENERAL PROVISIONS — FORMAL PROCEEDINGS — PLEADINGS AND OTHER PRELIMINARY MATTERS —PETITIONS — Petitions for issuance, amendment, repeal, or waiver of Commission regulations

(a) A petition to the Commission for the issuance, amendment, waiver or repeal of a regulation must set forth clearly and concisely the interest of the petitioner in the subject matter, the specific regulation, amendment, waiver or repeal requested, and cite by appropriate reference the statutory provision or other authority involved. The petition must 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.
(b) A copy of the petition shall be served on all persons directly affected and on other parties who petitioner believes will be affected by the petition. Copies of the petition shall be served on the Office of Trial Staff, the Office of Consumer Advocate and the Office of Small Business Advocate. Service shall be evidenced with a certificate of service filed with the petition.
(c) Copies shall also be served in compliance with Commission direction.
(d) Subsection (a) is identical to 1 Pa. Code § 35.18 (relating to petitions for issuance, amendment, waiver or repeal of regulations).

52 Pa. Code § 5.43