A State permit or permit revision which is not otherwise required by federal law or regulations shall not be required for remedial action activities undertaken pursuant to the provisions of this Title that occur entirely on the site.
415 ILCS 5/58.4
A State permit or permit revision which is not otherwise required by federal law or regulations shall not be required for remedial action activities undertaken pursuant to the provisions of this Title that occur entirely on the site.
415 ILCS 5/58.4