After years of warnings and vanishing crayfish, a wood-treatment plant in Sheridan, Oregon, has pleaded guilty to polluting the South Yamhill River—raising urgent questions about public health and accountability in a community that relies on the waterway. According to the Associated Press via KOIN, Stella-Jones Corp. admitted to 10 misdemeanor counts of unlawful water Pollution and agreed to up to $250,000 in fines tied to months of contamination at a site that’s already a Superfund property for historic pentachlorophenol (PCP) Pollution.
PCP—a likely carcinogen associated with non-Hodgkin lymphoma and multiple myeloma—has a notorious legacy in wood preservation. Federal cleanup at the Sheridan site previously removed contaminated soils and attempted to contain polluted groundwater under the Superfund program, yet recent stormwater samples again showed PCP exceedances. Draft federal findings suggest dioxins and other byproducts have spread beyond the facility, including to nearby soils and sediments, while threatened fish like steelhead and coho salmon use the river for spawning—a stark reminder that harming wildlife ultimately harms people and the broader environment.
Regulators are under scrutiny, too. The Oregon Department of Environmental Quality (DEQ) flagged repeated violations dating back to 2022 but has not yet issued civil penalties, even as it pursued a criminal case. The U.S. Environmental Protection Agency is still finalizing its report, and the Confederated Tribes of Grand Ronde have urged faster action to protect Tribal people and resources. Meanwhile, residents say they were kept in the dark about risks to a river that also supplies local drinking water…