Superfund Information Systems: Site Profile

Superfund Site:


Cleanup Activities

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The San Fernando Valley (Area 2) site is a 6,680-acre area of contaminated groundwater in Glendale, California. The site is one of four Superfund sites in the San Fernando Valley. Numerous potentially responsible parties (PRPs) contaminated groundwater in the region with volatile organic compounds (VOCs), including trichloroethylene (TCE) and perchloroethylene (PCE). Cleanup and investigation activities are ongoing.

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What Has Been Done to Clean Up the Site?

The site is being addressed through federal, state, municipal and PRP actions.

EPA has conducted two five-year reviews of the site’s remedy. The most recent review concluded that EPA could not make a protectiveness determination for the site until it evaluates the regional groundwater vapor intrusion pathway and establishes the hydraulic capture of the groundwater plume.

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What Is the Current Site Status?

For the site’s long-term cleanup, EPA split the site into two operable units (OUs) to manage and prioritize cleanup actions. An OU is a focused study area that allows EPA to take discrete actions as part of an overall cleanup.

Glendale North and South OU: The interim remedy includes groundwater pumping and treatment, with the City of Glendale or another municipality receiving the treated water. The Glendale Area treatment facility began operating in 2000 and continues to provide drinking water to the city. So far, the plant has removed over 20,000 pounds of VOCs from groundwater at the site.

Glendale Chromium OU: EPA completed a removal action, or short-term cleanup, in 2007 to excavate contaminated soils and cap and fence the site. EPA began investigating chromium contamination in the groundwater in 2008. EPA and PRPs have since installed 29 new groundwater monitoring wells to help identify the extent of chromium contamination. Investigation activities are ongoing. EPA will use the results of these studies to identify cleanup options for the site.

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Sampling and Monitoring

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