Ill. Admin. Code tit. 62 § 1780.6
Permit applicants shall comply with Part 62 Ill. Adm. Code 1778, 1779, 1780, 1783, and 1784 by providing accurate descriptive and predictive information relating to geology, water quality and quantity for a particular permit area, based upon expert opinion extrapolation from known data on geology, water quality and quantity of similar areas, rather than by the collection of new data for the particular site, provided that the data used by an expert are included within the permit application, the expert opinion is approved by the Department, and made available to the public for review and inspection. The Department's approval shall be based upon the expert's education and/or training in the field in which the expert is offering an opinion.
Ill. Admin. Code tit. 62, § 1780.6
Amended at 11 Ill. Reg. 8602, effective July 1, 1987