Item 4. CONTROLS AND PROCEDURES

As of March 31, 2023, with the participation of our management, our Chief Executive Officer (principal executive officer) and our Chief Financial Officer (principal financial and accounting officer) carried out an evaluation, pursuant to Rule 13a-15(b) of the Securities Exchange Act of 1934, as amended (the “Act”), of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Act). Based upon that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective as of March 31, 2023.

There have been no changes in our internal controls over financial reporting, as defined in Rule 13a-15(f) of the Act, in the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. LEGAL PROCEEDINGS

Information regarding our litigation and legal proceedings can be found in Note 9 to the Consolidated Financial Statements, which is incorporated into this Item 1 by reference.

In February 2020, the State of Texas filed suit against Houston Refining, LP, a subsidiary of LyondellBasell, in Travis County District Court seeking civil penalties and injunctive relief for violations of the Texas Clean Air Act related to several emission events. In July 2020, Harris County, Texas petitioned to intervene in the lawsuit and the State added additional claims to its petition relating to self-reported deviations of Houston Refining’s air operating permit. We are currently engaged in settlement discussions with the State to resolve this matter, and reasonably believe resolution of this matter will result in a payment of a penalty in excess of $300,000.

On July 27, 2021, approximately 160,000 pounds of liquid process material containing primarily acetic acid was released from a reactor at the La Porte acetic acid unit. In October 2021, the Texas Commission on Environmental Quality (“TCEQ”) issued a Notice of Enforcement for the incident. In November 2021, the State of Texas filed a petition on behalf of the TCEQ seeking injunctive relief and civil penalties for unauthorized air pollution and regulatory nuisance related to the incident. As of April 17, 2023, we have agreed in principle with the State of Texas to resolve this matter with a civil penalty of $1.1 million; an agreed final judgment is being prepared to be lodged for public comment and entered by the court.

Additional information about our environmental proceedings can be found in Part I, Item 3 of our 2022 Annual Report on Form 10-K, which is incorporated into this Item 1 by reference.