312 IAC 11-2-23 "Significant environmental harm" defined

Sec. 23. "Significant environmental harm" means damage to natural or cultural resources, the individual or cumulative effect of which is found by the director or a delegate to be obvious and measurable (based upon the opinion of a professional qualified to assess the damage) and that: (1) creates a condition where recovery of affected resources is not likely to occur within an acceptable period; and (2) cannot be adequately mitigated through the implementation of a mitigation plan approved by the director.