EPA moves to feasibility study for contaminated Clark Fork River site cleanup

The Smurfit Stone Community Advisory Group convened on May 1, 2025, in Missoula, Montana, to discuss ongoing environmental concerns related to the Superfund site. The meeting focused on the latest findings regarding contaminants, particularly polychlorinated biphenyls (PCBs), arsenic, and manganese, and the implications for community health and safety.

The discussion began with an update on the testing of PCBs, which were analyzed directly rather than through analog methods. Participants expressed concerns about the lack of detailed information regarding the extent of sampling conducted. The Environmental Protection Agency (EPA) is transitioning from understanding the contaminants' presence to developing a feasibility study aimed at cleanup strategies. This shift raises questions about the movement of contaminants and their impact on local ecosystems, particularly concerning the Clark Fork River and its surrounding biota.

Key issues highlighted included the discovery of higher metal concentrations in newer wells compared to older ones, and the presence of dioxins and furans in localized areas associated with a former wastewater treatment system. The community members emphasized the need for more comprehensive downstream testing to better understand the contamination pathways.

As the meeting progressed, participants voiced their concerns about the potential for "waste in place" strategies, which could leave contaminants unaddressed. They noted that the EPA's risk assessment process could limit the ability to incorporate new findings into cleanup priorities once the feasibility study is underway. The community's apprehension was further fueled by a recent newsletter indicating unacceptable levels of contamination in the shallow aquifer, which is not a designated drinking water source, thereby reducing the perceived urgency for cleanup.

The meeting concluded with a call for continued community engagement and vigilance regarding environmental health. Participants underscored the importance of ensuring that future generations can safely enjoy the local environment, particularly areas historically impacted by industrial activities. The advisory group plans to continue monitoring developments and advocating for thorough investigations and effective remediation strategies as the feasibility study progresses.