At any time before the issuance of a notice of hearing on a petition for investigation and certification, the director of PEPR may permit the amendment of the petition or its withdrawal in whole or in part. At any time after the issuance of such notice of hearing, the hearing officer, upon motion, may permit withdrawal of the petition in whole or in part, and the hearing officer may permit amendment thereof.
N.Y. Comp. Codes R. & Regs. Tit. 12 § 251.6