POLLUTION LOCATOR| Superfund | Superfund Site Report

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  • Site Description
    Stage of Clean-up: Construction Underway

    Conditions at listing (October l98l): The Nyanza Chemical Waste Dump is adjacent to an active industrial complex in Ashland, Massachusetts. The 35-acre site is within l,000 feet of Sudbury Reservoir, which is used for recreational purposes and is considered a possible supplemental source of drinking water for the metropolitan Boston area. From l9l7 to l978, the site was occupied by numerous producers of textile dyes and intermediates. Nyanza Chemical, the last of these companies, operated from l965 to l978, when it went out of business due to financial problems. Over 45,000 tons of chemical sludges were generated by Nyanza's waste water treatment processes. Soil, ground water, and surface water are contaminated with HEAVY METALS and chlorinated organics. Mercury-laden particulates may also have been blown into the air from exposed sludges. The current owner leases the old plant to various businesses. When Nyanza sold the land, the court required that about $250,000 be placed in escrow, most of which the owner has spent on site studies. Status (July l983): In January l983, EPA signed a $500,000 Superfund State Contract with Massachusetts for a remedial investigation to determine the type and extent of contamination at the site and a feasibility study to identify alternatives for remedial action. The work is scheduled to be completed in the first quarter of l984.  More...

    Sources of Contamination:
    • Discharge to sewer/surface water
    • Dumping - unauthorized
    • Inadvertent spill
    • Lagoon disposal
    • Manufacturing process
    • Storage - drums/containers of waste
    • Storage - finished product
    • Storage - raw material
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  • Threats and Contaminants
    The groundwater, soil, sediments, and surface water are contaminated with HEAVY METALS and chlorinated organics. The groundwater and soil are also contaminated with spent solvents and chemical wastes. Health threats include direct contact with and accidental ingestion of contaminated surface water, groundwater, or soil. Wetlands nearby and fish in the Sudbury River are contaminated with MERCURY. Sediments in the Sudbury River also have high MERCURY levels.

    Contaminants Detected

    Air Soil Other
    LEAD X   

    Groundwater and Drinking Water

    Were drinking water wells shut down due to contamination? No
    Are drinking water wells potentially threatened? No
    Aquifer discharges into: Surface water
    Population served by water wells in the aquifer: 0
    List ground water uses.
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  • Pre-Cleanup Rankings
    EPA Hazard Ranking System scores for NYANZA CHEMICAL WASTE DUMP:

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

    Overall site:
    Surface water migration:
    Ground water migration:
    Air migration:

    Rank Superfund sites in the U.S., MASSACHUSETTS, or in MIDDLESEX 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: MAD990685422
    Address: MEGUNKO RD
    ASHLAND, MA 01721
    Other Names: NYANZA CHEMICAL
    Site Ownership: Private
    Category of Site: Chemical Plant
    Date of Final Listing on the NPL: September 08, 1983
    List Standard Industrial Classifications (SIC) associated with current and past activities at the NYANZA CHEMICAL WASTE DUMP Superfund site.
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  • Potentially Responsible Party (PRP) Involvement
    Number of PRPs currently associated with this site: 29
    Hazardous waste received from off-site generators/transporters? No
    Number of owners/operators which are also municipalities: 0
    Percent of waste at the site that is municipal solid waste: None

    List Potentially Responsible Parties identified by U.S. EPA as associated with the NYANZA CHEMICAL WASTE DUMP Superfund site.
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