Ohio Rev. Code Ann. § 1509.074
(A) With regard to material that results from the construction, operation, or plugging of a horizontal well, all of the following apply:
(1) Except as provided in division (A)(2) of this section, the owner shall determine the concentration of radium-226 and of radium-228 in representative samples of the material if the material is technologically enhanced naturally occurring radioactive material. The owner shall provide for the collection and analysis of the representative samples of the material. The collection and analysis of the representative samples shall be performed in accordance with requirements approved by the chief of the division of oil and gas resources management. The owner shall not remove the material from the location associated with the production operation of the horizontal well until the analysis is complete and the results are available. However, the owner may do one of the following:
(2) The owner is not required to determine the concentration of radium-226 and of radium-228 of the material that is technologically enhanced naturally occurring radioactive material if any of the following applies:
(4) If the material is not technologically enhanced naturally occurring radioactive material and the material has come in contact with a refined oil-based substance, the owner shall do one of the following:
(C) As used in this section: