First Regular Session of the 124th General Assembly (2025)
PRINTING CODE. Amendments: Whenever an existing statute (or a section of the Indiana
Constitution) is being amended, the text of the existing provision will appear in this style type,
additions will appear in this style type, and deletions will appear in this style type.
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provision adopted), the text of the new provision will appear in this style type. Also, the
word NEW will appear in that style type in the introductory clause of each SECTION that adds
a new provision to the Indiana Code or the Indiana Constitution.
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between statutes enacted by the 2024 Regular Session of the General Assembly.
SENATE ENROLLED ACT No. 103
AN ACT to amend the Indiana Code concerning environmental law.
Be it enacted by the General Assembly of the State of Indiana:
SECTION 1. IC 13-17-5-10 IS ADDED TO THE INDIANA CODE
AS A NEW SECTION TO READ AS FOLLOWS [EFFECTIVE JULY
1, 2025]: Sec. 10. Not later than December 31, 2025, the department
shall do the following:
(1) Perform a comprehensive evaluation of ambient air
quality within any nonattainment areas in Indiana.
(2) Identify air pollution reduction or regulatory relief
strategies that can do the following with respect to the federal
Clean Air Act (42 U.S.C. 7401 et seq.), as amended by the
federal Clean Air Act Amendments of 1990 (P.L.101-549):
(A) Ensure that affected areas within Indiana are no
longer designated as nonattainment.
(B) Result in the eventual phase out of the inspection and
maintenance program for light duty vehicles.
(C) Meet emissions goals.
(D) Appropriately address air pollution contributions to
nonattainment areas in Indiana from sources that cannot
be addressed by state or local controls, including
contributions from international, natural or background,
interstate, mobile, and stationary sources as well as
exceptional events that are unlikely to recur.
(E) Result in the withdrawal of Lake County and Porter
SEA 103 — Concur 2
County from the Metropolitan Chicago Interstate Air
Quality Control Region.
In identifying strategies under subdivision (2), the department
must coordinate with the United States Environmental Protection
Agency.
SEA 103 — Concur President of the Senate
President Pro Tempore
Speaker of the House of Representatives
Governor of the State of Indiana
Date: Time:
SEA 103 — Concur