Superfund Site Profile

There are no active cleanup activities currently underway at the JJ Seifert Machine Shop Site (Seifert). Cleanup at the site involves the injection of biodegradable material into the subsurface to faciliate the biological degradation of the volatile organic groundwater contaminants. The last injection occured in April 2017 and the groundwater is currently being monitored.

Because there are no above-ground structures or surface contaminants, no impacts to the cleanup are anticipated by Hurricane Irma.

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The JJ Seifert Machine site is located in Ruskin, Florida. It includes the area where JJ Seifert Machine Company manufactured products such as electronic components from 1962 to 2011. EPA placed the site on the Superfund program’s National Priorities List (NPL) in 2010 because of contaminated groundwater resulting from facility operations. EPA and the Florida Department of Environmental Protection (FDEP) have investigated site conditions and taken steps to protect people and the environment from contamination. In 2009, FDEP had filters installed on private wells where contaminants exceeded drinking water standards.

In 2014, EPA began a treatment program that involved the injection of biological amendments into the subsurface to naturally degrade the volatile organic contaminants  (VOCs) in the groundwater. Two injections have been completed and ground-water monitoring indicate a steady decrease in contaminant levels.