225 ILCS 732/1-30

(a) Notwithstanding any other provision of law, a person may not drill, deepen, or convert a horizontal well where high volume horizontal hydraulic fracturing operations are planned or occurring or convert a vertical well into a horizontal well where high volume horizontal hydraulic fracturing operations are planned in this State, unless the person has been issued a permit by the Department under this Act and has obtained all applicable authorizations required by the Illinois Oil and Gas Act. (b) If multiple wells are to be stimulated using high volume horizontal hydraulic fracturing operations from a single well site, then a separate permit shall be obtained for each well at the site.