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EPA Superfund Site

SAN FERNANDO VALLEY (AREA 4)

CA | EPA ID CAD980894976

Human exposure is under control

About this site’s exposure pathways: As of September 2022, there is insufficient data to determine the Human Exposure Control Status at the San Fernando Valley (Area 4) site. A remedial investigation followed by an RI/FS report is currently being conducted to evaluate a PCE/TCE, Cr6, and 1,4-dioxane groundwater plume. The GW plume risk to the Pollock LA Dept of Water and Power (LADWP) municipal water supply wells is believed to be incomplete based on LADWP long-term wellhead sampling and treatment of GW. The RI/FS will update the CSM and is expected to select long-term GW remedies for the Pollock wellfield.

As well, vapor intrusion risk is being investigated as a new potential human exposure risk. Currently, there is insufficient information to evaluate VI human exposure at this site; however, based on indoor air sampling conducted at 15 homes in Feb 2022, the VI / GW to indoor air sampling pathway is incomplete. A second round of indoor air sampling will be conducted in winter 2022/23 at additional residences, businesses, and two schools.

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Data limitations: Proximity to a Superfund site boundary does not mean your property is contaminated. EPA site boundaries show the area designated for cleanup, not the full extent of contamination. Groundwater plumes can extend beyond site boundaries. This tool shows publicly available EPA federal data. It is not affiliated with or endorsed by EPA, and is not a substitute for a professional environmental assessment.

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