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The Public Comment Period has been extended for an additional 45 days through March 30, 2020

EPA is accepting written comments from the public and other interested parties on the proposed cleanup.
Comments must be sent or postmarked no later than March 30, 2020.
Comments should be sent to: Lisa Thuot, EPA Remedial Project Manager by either:

  • Postal mail: 5 Post Office Square, Suite 100, Boston, MA 02109, (postmarked by 3/30/2020)
  • Fax:- (617) 918-0129, or
  • Email:

EPA Proposes Groundwater Cleanup Plan for the Nyanza Waste Dump Superfund Site in Ashland, Massachusetts

The U.S. Environmental Protection Agency proposed a cleanup plan for groundwater at the Nyanza Waste Dump Superfund Site in Ashland, Massachusetts. EPA hosted a Public Information Session on January 23 at the Ashland High School Auditorium in Ashland, followed by a Public Hearing at the same location. Read the full press release here.

Read the Proposed Plan, 1/09/20 (39 pp, 2.31 MB, About PDF)

View the complete Administrative Record File.


Five Year Review

On May 21, 2019 the EPA completed the sixth Five Year Review for the site.

Institutional controls are required for this site.  

This site requires ICs because a decision document, such as a Record of Decision, has documented some level of contamination and/or remedy component at the site that would restrict use of the site. These ICs are required to help ensure the site is used in an appropriate way and that activities at the site do not damage the cleanup components. These ICs will remain in place for as long as the contamination and/or cleanup components stay on site.  In order to determine the current status of ICs for this site, the site contacts should be consulted. 

 More information about institutional controls at this site.   

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