Ohio Rev. Code Ann. § 1514.02
(A) After the dates the chief of the division of mineral resources management prescribes by rule pursuant to section 1514.08 of the Revised Code, but not later than July 1, 1977, nor earlier than July 1, 1975, no operator shall engage in surface mining or conduct a surface mining operation without a surface mining permit issued by the chief. No person shall engage in in-stream mining or conduct an in-stream mining operation without an in-stream mining permit issued by the chief. However, a person who, on March 15, 2002, holds a valid permit to conduct in-stream mining that is issued under section 10 of the "Rivers and Harbors Appropriation Act of 1899," 30 Stat. 1151, 33 U.S.C. 403, as amended, shall not be required to obtain an in-stream mining permit from the chief under this section until the existing permit expires. An application for a surface or in-stream mining permit shall be upon the form that the chief prescribes and provides and shall contain all of the following:
(10) A complete plan for surface or in-stream mining and reclamation of the area to be affected, which shall include a statement of the intended future uses of the area and show the approximate sequence in which mining and reclamation measures are to occur, the approximate intervals following mining during which the reclamation of all various parts of the area affected will be completed, and the measures the operator will perform to prevent damage to adjoining property and to achieve all of the following general performance standards for mining and reclamation:
(o) In the case of in-stream mining, do all of the following:
(12) For any applicant for a surface mining permit who intends to extract ten thousand tons of minerals or more per year or who intends to extract any incidental coal irrespective of the tonnage of minerals intended to be mined, a map, in triplicate, on a scale of not more than four hundred feet to the inch, or three copies of an enlarged United States geological survey topographic map on a scale of not more than four hundred feet to the inch. Each application for an in-stream mining permit shall include such a map regardless of the tons of minerals that the applicant intends to extract. The map shall comply with all of the following:
(13) A certificate of public liability insurance issued by an insurance company authorized to do business in this state or obtained pursuant to sections 3905.30 to 3905.35 of the Revised Code covering all surface or in-stream mining operations of the applicant in this state and affording bodily injury and property damage protection in amounts not less than the following:
(18) In the case of an application for an in-stream mining permit, and if required by the division of mineral resources management after review of an applicant's proposed in-stream mining plans, a hydraulic evaluation of the watercourse prepared by a professional engineer registered under Chapter 4733. of the Revised Code. If the hydraulic evaluation is required, it shall include, without limitation, all of the following:
(E) An operator, at any time and upon application therefor and approval by the chief, may amend the plan of mining and reclamation filed with the application for a permit in order to change the reclamation measures to be performed, modify the interval after mining within which reclamation measures will be performed, change the sequence in which mining or reclamation will occur at specific locations within the area affected, mine acreage previously mined or reclaimed, or for any other purpose, provided that the plan, as amended, includes measures that the chief determines will be adequate to prevent damage to adjoining property and to achieve the performance standards set forth in division (A)(10) of this section. An application for a significant amendment to a plan, as "significant" is defined by rule, shall include a copy of the advertisement that the applicant is required to have published in accordance with section 1514.022 of the Revised Code. The chief may propose one or more amendments to the plan in writing within ninety days after the fifth anniversary of the date of issuance of a surface mining permit or within ninety days after the first anniversary of the date of issuance of an in-stream mining permit. The chief's proposal may be made upon a finding of any of the following conditions after a complete review of the plan and inspection of the area of land affected, and the plan shall be so amended upon written concurrence in the findings and approval of the amendments by the operator: