According to this Elkhart Truth article, the IDNR is expected to announce a decision regarding the Bulldog Mine permit #429 by this Friday (3/6). At that time, they could decide to approve it or reject it. They could also send the application back to Sunrise Coal for modification. In the latter case, Sunrise Coal would have 1 year to make the requested modifications.
Regardless of the decision on the IDNR permit, Sunrise Coal will also have to receive a water discharge permit from the Illinois EPA.
The IDNR permit is just the first step in a lengthy process.