History: Boise Cascade was a pulp and paper mill constructed in the 1920s that, until 1969, discharged its wastewater to Multnomah Channel. In 2015 the property was transferred to the City of St. Helens. Cascade Tissue Group is still leasing portions of the property for tissue paper production, although pulping operations are no longer performed at the property.
Current status: DEQ is currently evaluating a range of remedial action alternatives presented in a draft feasibility study submitted in August 2020. DEQ expects to issue a proposed cleanup plan for public comment in 2021.