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Superfund Site Report: SAN FERNANDO VALLEY (AREA 4)
  • Map Locating Superfund Site
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  • Site Description
    Stage of Clean-up: Study Underway

    Conditions at proposal (October 15, 1984): San Fernando Valley (Area 4) is an area of contaminated ground water in the Pollock Well Field area in the City of Los Angeles, Los Angeles County, California. The area is part of the San Fernando Valley Basin, a natural underground reservoir that represents an important source of drinking water for at least 3 million people in the Los Angeles metropolitan area. The contaminated ground water, which underlies an area of approximately 5,860 acres, contains PERCHLOROETHYLENE (PCE), according to tests conducted by the California Department of Health Services, as well as numerous local government agencies. The State's recommended drinking water guideline for PCE (4 parts per billion) is exceeded in a number of public wells in this area. To alleviate this contamination, wells are either taken out of service or blended with water from clean sources to ENSURE that the public receives water with concentrations below the State's guideline.  More...

    Sources of Contamination:
    • Discharge to sewer/surface water
    • Inadvertent spill
    • Incineration residuals handling
    • Landfarm/land treatment facility
    • Landfill
    • Manufacturing process
    • Storage - drums/containers of waste
    • Storage - raw material
    • Waste pile
    • Waste tank - above ground
    • Waste tank - below ground
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  • Threats and Contaminants
    The groundwater is contaminated with various chlorinated VOCS, specifically TRICHLOROETHYLENE (TCE) and PERCHLOROETHYLENE (PCE). Exposure to the VOC contamination can occur through drinking, bathing, or cooking with contaminated groundwater. However, since the contamination was discovered, residents have been provided with alternate drinking water supplies, including imported water or groundwater mixed with imported water.

    Contaminants Detected

    Air Soil Other

    Groundwater and Drinking Water

    Were drinking water wells shut down due to contamination? Yes
    Population served by the wells now shut down: > 100,000
    Are drinking water wells potentially threatened? Yes
    Population served by the threatened wells: > 100,000
    Aquifer discharges into: A drinking water aquifer
      Surface water
    Population served by water wells in the aquifer: > 100,000
    List ground water uses.
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  • Pre-Cleanup Rankings
    EPA Hazard Ranking System scores for SAN FERNANDO VALLEY (AREA 4):

    Less Hazard National Average More Hazard
    0%         50%         100%

    Overall site:
    Ground water migration:

    Rank Superfund sites in the U.S., CALIFORNIA, or in LOS ANGELES County by EPA Hazard Ranking Scores.

    *Note: EPA's Hazard Ranking System is designed to screen and prioritize sites for the Superfund program, based on limited data available at time of listing. These scores are not based on a comprehensive risk assessment of the site and do not reflect conditions after initiation of cleanup work.
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  • Site Information
    EPA ID: CAD980894976
    LOS ANGELES, CA 90086
    Site Ownership: Mixed Ownership
    Category of Site: Wells
    Date of Final Listing on the NPL: June 10, 1986
    List Standard Industrial Classifications (SIC) associated with current and past activities at the SAN FERNANDO VALLEY (AREA 4) Superfund site.
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  • Potentially Responsible Party (PRP) Involvement
    Number of PRPs currently associated with this site: 0
    Number of past and present PRPs who contributed less than 1% of the waste: 0
    Number of owners/operators which are also municipalities: 1

    List Potentially Responsible Parties identified by U.S. EPA as associated with the SAN FERNANDO VALLEY (AREA 4) Superfund site.
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