Ohio Revised Code Title LIII. Real Property § 5301.88

(A) Except as otherwise provided in division (B) of this section, an environmental covenant and any amendment or termination of the environmental covenant shall be filed in the office of the county recorder of each county in which the real property that is subject to the environmental covenant is located and shall be recorded in the same manner as a deed to the property. For purposes of indexing, a holder shall be treated as a grantee.

(B) Pursuant to Chapter 5309. of the Revised Code, an environmental covenant and any amendment or termination of the environmental covenant in connection with registered land, as defined in section 5309.01 of the Revised Code, shall be entered as a memorial on the page of the register where the title of the owner is registered.

(C) Except as otherwise provided in division (C) of section 5301.89 of the Revised Code, an environmental covenant is subject to the laws of this state governing recording and priority of interest in real property.