In the case of a surface mining permit, the bond shall be filed based on the number of acres estimated to be affected during the first year of operation under the permit. In the case of an amendment to a surface mining permit, the bond shall be filed based on the number of acres estimated to be affected during the balance of the period until the next anniversary date of the permit.
In the case of an in-stream mining permit, the bond shall be filed based on the number of acres of land within the limits of the in-stream mining permit for the entire permit period. In the case of an amendment to an in-stream mining permit, the bond shall be filed based on the number of any additional acres of land to be affected within the limits of the in-stream mining permit.
The operator may deposit with the chief, in lieu of a surety bond, cash in an amount equal to the surety bond as prescribed in this section or an irrevocable letter of credit or negotiable certificates of deposit issued by any bank organized or transacting business in this state having a cash value equal to or greater than the amount of the surety bond as prescribed in this section. Cash or certificates of deposit shall be deposited upon the same terms as the terms upon which surety bonds may be deposited. If the operator deposits cash, the cash shall be credited to the performance cash bond refunds fund created in section 1501.16 of the Revised Code. If the operator deposits certificates of deposit , the chief shall require the bank that issued any such certificate to pledge securities of a cash value equal to the amount of the certificate that is in excess of the amount insured by the federal deposit insurance corporation. The securities shall be security for the repayment of the certificate of deposit.
R.C. § 1514.04