Shown verbatim: the complete text as captured from the official PDF posted by the Illinois General Assembly, fetched 2026-09-25. Page and line markers are part of the official record; nothing is edited or removed. This is the current version. The official bill page.
SB4041 Enrolled LRB104 20739 JDS 34242 b
1 AN ACT concerning State government.
2 Be it enacted by the People of the State of Illinois,
3 represented in the General Assembly:
4 Section 5. The Permanent Noise Monitoring Act is amended
5 by adding Section 16 as follows:
6 (620 ILCS 35/16 new)
7 Sec. 16. Noise contour studies.
8 (a) As used in this Section:
9 "Airport sponsor" means the entity that owns or operates a
10 covered airport.
11 "Covered airport" means an airport, as defined in Section
12 6 of the Illinois Aeronautics Act, that is a commercial
13 service airport and that had more than 150,000 aircraft
14 operations, take-offs and landings, during the immediately
15 preceding calendar year.
16 "Noise contour study" means a noise exposure map and
17 accompanying documentation prepared in accordance with 14 CFR
18 Part 150 for existing conditions and forecast conditions.
19 (b) Beginning no later than December 31, 2030 and every 5
20 years thereafter, the airport sponsor shall prepare or cause
21 to be prepared a noise contour study for each covered airport
22 under its jurisdiction.
23 (c) Each noise contour study required under this Section
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1 shall:
2 (1) be prepared using the methodology required under
3 14 CFR Part 150;
4 (2) include contours for existing conditions and
5 forecast conditions;
6 (3) identify the location and extent of noncompatible
7 land uses within the contours to the extent required under
8 14 CFR Part 150;
9 (4) include a summary of changes, if any, from the
10 most recently completed noise contour study; and
11 (5) include a modernization review evaluating whether
12 additional analysis should be included in future studies,
13 including, but not limited to:
14 (A) the use of supplemental noise contours,
15 including contours below DNL 65 dB;
16 (B) changes in federal guidance, methodology, or
17 modeling tools;
18 (C) changes in aircraft operations, fleet mix,
19 runway usage, nighttime operations, or surrounding
20 land uses; and
21 (D) whether additional metrics, thresholds, or
22 disclosure practices should be used for informational
23 or planning purposes in addition to those required
24 under 14 CFR Part 150.
25 (d) The modernization review required under paragraph (5)
26 of subsection (c) shall include findings and recommendations
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1 concerning whether any revisions to applicable noise
2 thresholds, contours, methodologies, or disclosure practices
3 should be considered by the airport sponsor, the State, or the
4 Federal Aviation Administration.
5 (e) The airport sponsor shall make each completed noise
6 contour study available to the public on its website and shall
7 submit a copy to the Governor, the President of the Senate, the
8 Senate Minority Leader, the Speaker of the House of
9 Representatives, and the Minority Leader of the House of
10 Representatives.
11 (f) Nothing in this Section prohibits the airport sponsor
12 from preparing a revised or supplemental noise contour study
13 at any time more frequently than required under this Section.Every fact on this page links to its source, starting with the official bill record.