Ohio Rev. Code Ann. § 3734.26
(B) The owner shall submit an application for a grant on forms furnished by the director, together with detail plans and specifications for the measures to be performed to close the facility properly or to abate or prevent air or water pollution or soil contamination from the facility, an itemized estimate of the project's cost, a description of the project's estimated benefits, and such other information as the director prescribes. The plan may be prepared in consultation with the director or with the board of health of the city or general health district in which the facility is located. The director may award the applicant a grant only after finding that the proposed measures will provide for the proper closure of the facility or will abate or prevent air or water pollution or soil contamination from the facility, including, but not limited to, those measures necessary or desirable to:
(C) The director shall determine the amount of the grant based upon the director's determination of what constitutes reasonable and necessary expenses for the proper closure of the facility or for the abatement or prevention of air or water pollution or soil contamination from the facility. The amount of the grant shall not exceed one-half of the total, as determined by the director, of what constitutes reasonable and necessary expenses actually incurred for the proper closure of or abatement or prevention of air or water pollution or soil contamination from the facility. In making a grant, the director shall enter into a contract for funding with each applicant awarded a grant to ensure that the moneys granted are used for the purpose of this section and that the measures performed are properly performed. The final payment under a grant may not be made until the director inspects and approves the completed cleanup and the plans for developing the land for use in industry, commerce, distribution, or research. Each contract for funding shall contain provisions for the reimbursement of the state of a portion of the costs of the cleanup that is commensurate with the increase in the market value of the property attributable to the cleanup thereon, as determined by appraisals made before and after cleanup in the manner stated in the contract. For reimbursement of that portion, the contract may include provisions for: