Indiana Code Title 14. Natural and Cultural Resources § 14-36-1-28

Sec. 28. (a) Upon receipt of the operator's affected area report the director shall charge against the surety bonds or other securities on deposit in connection with the operation covered by the report the amount required by section 22 of this chapter for each acre of land in the area of land affected by the operation within the time covered by the report.  The director shall issue to the operator and the director's surety a release of any parts of the surety bonds or other security on deposit in connection with the operation against which a charge has not been made.

(b) If the report shows that the number of acres of land comprising the area of land affected is smaller than the number of acres of land for which the operator has paid to the director a permit fee in connection with the permit authorizing the operation covered by the report, the operator is entitled to a refund in the amount of the fees paid for acres not affected.