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Illinois Compiled Statutes

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Information maintained by the Legislative Reference Bureau
Updating the database of the Illinois Compiled Statutes (ILCS) is an ongoing process. Recent laws may not yet be included in the ILCS database, but they are found on this site as Public Acts soon after they become law. For information concerning the relationship between statutes and Public Acts, refer to the Guide.

Because the statute database is maintained primarily for legislative drafting purposes, statutory changes are sometimes included in the statute database before they take effect. If the source note at the end of a Section of the statutes includes a Public Act that has not yet taken effect, the version of the law that is currently in effect may have already been removed from the database and you should refer to that Public Act to see the changes made to the current law.

415 ILCS 5/3.363

    (415 ILCS 5/3.363)
    Sec. 3.363. Prevention of significant deterioration (PSD) permit. "Prevention of Significant Deterioration permit" or "PSD permit" means a permit or the portion of a permit for a new major source or major modification that is issued by the Illinois Environmental Protection Agency under the construction permit program pursuant to subsection (c) of Section 9.1 that has been approved by the United States Environmental Protection Agency and incorporated into the Illinois State Implementation Plan to implement the requirements of Section 165 of the Clean Air Act and 40 CFR 51.166.
(Source: P.A. 99-463, eff. 1-1-16.)