EPA Superfund Site

FIVE POINTS PCE PLUME

UT | EPA ID UTN000802654

About this site’s exposure pathways: As of September 2025, the Five Points PCE Plume Superfund site is considered “Insufficient Data to make a Human Exposure evaluation” (HEID) because of a newly identified exposure pathway and/or contaminant(s) Further characterization of the site found related soil and soil gas PCE contamination, in addition to the already known groundwater plume. The site was previously categorized as Human Health Exposure Under Control because the groundwater plume did not impact resident’s drinking water. The new pathway does impact the selected remedy since new mediums will need to be addressed.

EPA uses this Human Exposure status when there is a lack of evidence to suggest that actual or reasonably anticipated human exposures are occurring and that those exposures are above acceptable risk-based levels. The planned activities to collect sufficient information to evaluate this new exposure pathway and/or contaminants(s) are to conduct further characterization of the soil and soil gas contamination through sampling and to evaluate for potential vapor intrusion occuring in buildings do to PCE soil gas. EPA and UDEQ currently anticipates that there will be sufficient data to make a Human Exposure evaluation by 2031 because of the completion of the additional investigation and focused feasibility study.

EPA and UDEQ are in continued communication with the dry cleaner owner and the property owner about current work undergoing at this site. EPA performed a small indoor air sampling event after confirmed soil gas samples were taken to evaluate potential vapor intrusion occurring in nearby properties. Although no immediate human risk, EPA and UDEQ are planning a widespread indoor air investigation to evaluate vapor intrusion human exposure pathway.