A generator may petition the Department to be allowed to operate under the provisions applicable to an episodic generation event for a second event in a calendar year under the following conditions: If the generator has already held a planned episodic generation event in a calendar year, the generator may petition the Department for an additional event that is an unplanned episodic generation event within 72 hours of the beginning of the unplanned event; and If the generator has already operated under provisions for an episodic generation event for an unplanned event in a calendar year, the generator may petition the Department for an additional event that is a planned episodic event that will occur in that calendar year. A generator submitting a petition under this regulation shall include, as part of the petition: The reason or reasons why the generator needs to operate under the provisions for an episodic generation event for a second event; Information on the nature of the second episodic generation event; An estimate of the amount of hazardous waste to be managed in connection with the episodic generation event; A description of how the waste from the episodic generation event is to be managed; The estimated length of time, not to exceed 60 days, of the period needed to complete management of the hazardous waste generated from the episodic generation event; and Information about the generator’s previous episodic generation event from the current calendar year, including the nature of the event, whether it was a planned event or an unplanned event, and how the generator complied with the conditions of this chapter with which the event was required to have been conducted. The generator shall make the petition to the Department in writing, either on paper or electronically. The generator shall: Retain in the generator’s records a copy of a written approval by the Department of a petition submitted by the generator under this regulation; and Retain the copy of the Department’s written approval for 3 years from the date the second episodic generation event ended.