(510 ILCS 77/10.26)
Sec. 10.26. Karstified carbonate bedrock. "Karstified carbonate bedrock" means a carbonate bedrock unit (limestone or dolomite) that has a pronounced conduit or secondary porosity due to dissolution of the rock along joints, fractures, or bedding plains.
(Source: P.A. 91-110, eff. 7-13-99.)