Koppers Holdings KOP Oregon — Number of potential responsible parties
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Where this comes from
Reported directly by Koppers Holdings in its filing.
Tagged under the XBRL concept kop:NumberOfPotentiallyResponsibleParties.
The source filing: Koppers Holdings’s 10-Q, filed August 6, 2026.
- Filed
- Aug 6, 2026, 12:05 PM EDT
- Fiscal quarter
- Q2 FY2026
- Calendar quarter
- Q2 2026
- Accession
- 0001315257-26-000048
Domestic Environmental Matters. Koppers Inc. has been named as one of the potentially responsible parties (PRPs) at the Portland Harbor CERCLA site located on the Willamette River in Oregon. Koppers Inc. operated a coal tar pitch terminal near the site. Koppers Inc. has responded to a US Environmental Protection Agency (the EPA) information request and has executed a PRP agreement which outlines a private process to develop an allocation of past and future costs among more than 80 parties to the site. Koppers Inc. believes it is a de minimis contributor at the site.
ITEM 1. FINANCIAL STATEMENTS
FAQ
- What is Koppers Holdings's oregon — number of potential responsible parties?
- Koppers Holdings (KOP) reported oregon — number of potential responsible parties of 80 in Q2 2026.
- How has Koppers Holdings's oregon — number of potential responsible parties changed year-over-year?
- Koppers Holdings's oregon — number of potential responsible parties decreased by 0.0% year-over-year, from 80 to 80.
- What is the long-term trend for Koppers Holdings's oregon — number of potential responsible parties?
- Over 4 years (2021 to 2025), Koppers Holdings's oregon — number of potential responsible parties has grown at a 0.0% compound annual growth rate (CAGR), from 320 to 320.
- What does oregon — number of potential responsible parties mean?
- This metric represents the total count of entities identified as potentially liable for environmental remediation or cleanup costs at a specific site or geographic location. It serves as a key indicator of potential cost-sharing opportunities and the complexity of legal or regulatory negotiations regarding environmental liabilities. Monitoring this figure helps investors assess the company's exposure to shared financial responsibility versus sole liability.
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