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| FIVE POINTS PCE PLUME | Woods Cross/Bountiful, Utah | |
| Davis County |
Site Location:
The site is located within the Salt Lake Valley in the Cities of Woods
Cross and Bountiful, Utah. A ground water plume begins in Bountiful,
traveling west-northwest into Woods Cross City, contaminating the city's
municipal well system. Most of the mile-long plume underlies Woods Cross
City, making it the affected community.
Site History:
The site consists of a ground water plume of tetrachloroethylene (also
called "PCE" or "PERC"). Woods Cross City has only four municipal water
wells to provide drinking water to the community of 7,400 people. Two of
these wells are contaminated with PCE. One of the wells is consistently
above the Cancer Risk Screening Concentration (CRSC) and the federally
regulated Maximun Contaminant Level (MCL). This well is no longer used,
but when it was in use, this well provided up to 50% of the city's water
supply. The other affected well has levels of PCE below the MCL and is
within Federal Drinking Water Standards. Nearby monitoring wells show
higher amounts of contamination than the drinking water wells. The
movement of ground water indicates that the contamination is likely to
increase in the municipal wells over time. The contamination is thought
to be from one or more dry cleaning operations in the area. Woods Cross
City cannot address the contamination because of the cost and technical
complexity of the problem. Both Cities, the State, and U.S.
Environmental Protection Agency (EPA) have been working to address this
ongoing problem.
Site Contamination/Contaminants:
Sampling and analyses indicate the plume has multiple potential sources,
but has no clear identifiable source(s). The plume consists of PCE,
which indicates dry cleaning operations as a likely source. Two former
dry cleaners and one active dry cleaner are in near proximity to each
other and the plume.
Potential Impacts on Surrounding Community/Environment:
The municipal drinking water system of Woods Cross City has been
impaired by this increasing contamination. More than 7,400 residents are
served by the drinking water system.
Response Activities (to date):
EPA's Removal Program has been working with one of the nearby dry
cleaners to remove old underground storage structures that used to
contain PCE. This action will only partially address the source(s) and
will not address the contaminated water. The City, State, and EPA are
committed to working cooperatively to address all of the environmental
concerns at this site.
[The description of the site (release) is based on information available at the time the site was evaluated with the HRS. The description may change as additional information is gathered on the sources and extent of contamination. See 56 FR 5600, February 11, 1991, or subsequent FR notices.]
For more information about the hazardous substances identified in this narrative summary, including general information regarding the effects of exposure to these substances on human health, please see the Agency for Toxic Substances and Disease Registry (ATSDR) ToxFAQs. ATSDR ToxFAQs can be found on the Internet at http://www.atsdr.cdc.gov/toxfaq.html or by telephone at 1-888-42-ATSDR or 1-888-422-8737.