Indiana Code Title 13. Environment § 13-18-20-3

Sec. 3. Each facility for which a coal mine operator files a notice of intent under the general coal mine permit rules adopted under IC 13-18-18 shall pay an annual fee of five hundred dollars ($500) instead of the following individual permit fees.  The annual fee must accompany the initial notice of intent and is due each year on the anniversary date of the date when the initial notice of intent was filed.