Trinseo Provides Update on Status of Release to Waterway at Bristol Plant

March 27, 2023

Material Not Detected in Initial Sampling Results

Trinseo PLC today provides the following update regarding the accidental release of an estimated 8,100 gallons of latex emulsion product from the Altuglas LLC manufacturing facility in Bristol, Pennsylvania.

The release was the result of an equipment failure. Some of the material overflowed the on-site containment system and entered a storm drain, where it flowed to Otter Creek and then to the Delaware River.

Trinseo personnel alerted federal, state, and local authorities and immediately began to participate in the emergency response. Because the material is highly water soluble, and the release coincided with a period of rainfall, the material dissipated quickly in the water. To assess potential impacts, water samples were collected at designated locations. Results received to date have not detected the released material.

Trinseo is continuing to work cooperatively with the U.S. Coast Guard, U.S. EPA, Pennsylvania Department of Environmental Protection, and local authorities to assess potential impacts and any remedial measures to address the release.

Trinseo voluntarily paused all production operations at the facility to devote its full resources to addressing the release and to conduct a thorough review and analysis of all material-handling processes and equipment at the Bristol facility. Trinseo will make improvements as necessary to achieve a standard of environmental excellence that its employees, investors and community expect and that, to date, has been a hallmark of Trinseo’s business performance.

Following an internal review of operations, Trinseo expects to resume partial production within the next several days, and to resume full production shortly thereafter. Trinseo is working to minimize any potential customer impacts.

The Bristol facility manufactures acrylic resins for Trinseo’s Engineered Materials business. The plant employs approximately 110 people.

About Trinseo

Trinseo (NYSE: TSE), a specialty material solutions provider, partners with companies to bring ideas to life in an imaginative, smart and sustainably focused manner by combining its premier expertise, forward-looking innovations and best-in-class materials to unlock value for companies and consumers.

From design to manufacturing, Trinseo taps into decades of experience in diverse material solutions to address customers’ unique challenges in a wide range of industries, including building and construction, consumer goods, medical and mobility.

Trinseo’s approximately 3,400 employees bring endless creativity to reimagining the possibilities with clients all over the world from the company’s locations in North America, Europe and Asia Pacific. Trinseo reported net sales of approximately $5.0 billion in 2022. Discover more by visiting and connecting with Trinseo on LinkedIn, Twitter, Facebook and WeChat.

Cautionary Note on Forward-Looking Statements

This press release may contain forward-looking statements including, without limitation, statements concerning plans, objectives, goals, projections, forecasts, strategies, future events or performance, and underlying assumptions and other statements, which are not statements of historical facts or guarantees or assurances of future performance. Forward-looking statements may be identified by the use of words like "expect," "anticipate," “believe,” "intend," "forecast," "outlook," "will," "may," "might," "see," "tend," "assume," "potential," "likely," "target," "plan," "contemplate," "seek," "attempt," "should," "could," "would" or expressions of similar meaning. Forward-looking statements reflect management’s evaluation of information currently available and are based on our current expectations and assumptions, our business, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Factors that might cause future results to differ from those expressed by the forward-looking statements include, but are not limited to, our ability to successfully investigate and remediate chemical releases on or from our sites, make related capital expenditures, reimburse third-party cleanup costs or settle potential regulatory penalties or other claims; our ability to successfully execute our business and transformation strategy; increased costs or disruption in the supply of raw materials; increased energy costs; our ability to successfully generate cost savings and increase profitability through asset restructuring initiatives; compliance with laws and regulations impacting our business; conditions in the global economy and capital markets; and those discussed in our Annual Report on Form 10-K, under Part I, Item 1A —"Risk Factors" and elsewhere in our other reports, filings and furnishings made with the U.S. Securities and Exchange Commission from time to time. As a result of these or other factors, our actual results, performance or achievements may differ materially from those contemplated by the forward-looking statements. Therefore, we caution you against relying on any of these forward-looking statements. The forward-looking statements included in this press release are made only as of the date hereof. We undertake no obligation to publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law.

For Editorial Information:

Name: Paula Cooney
Phone: 1 610-840-7967

Name: Shannon Callahan
Phone: 1 484-467-5611

Source: Trinseo PLC