Ohio Rev. Code Ann. § 3753.03
(A) Effective upon the date that the United States environmental protection agency delegates the program created under section 112(r) of the Clean Air Act Amendments to the environmental protection agency of this state, an owner or operator of a stationary source that has a covered process shall develop and submit a risk management plan no later than the latest of the following:
(B) An owner or operator who is subject to division (A) of this section shall submit a single risk management plan that reflects all covered processes at the stationary source by the applicable deadline established under that division and that is in the form required by the director of environmental protection in rules adopted under section 3753.02 of the Revised Code. The risk management plan shall include all of the following, as applicable:
(C) An owner or operator who has submitted a risk management plan as required by division (A) of this section or submitted an update to a risk management plan under division (C) of this section shall revise, update, and submit the risk management plan in accordance with whichever of the following is applicable: