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Region 1 - Environmental Remediation Project Information

***New Online Document Repository, including Remediation sites: DECinfo Locator, with more than 55 interactive data layers, lets users see and download permits, former industrial site cleanup plans, water quality reports, and more based on any street address, or zooming into a specific area of New York State's map. Selecting a map feature can bring up links to database records for petroleum bulk storage facilities and more. This allows users to see how DEC is working to protect and enhance the state's environment and recreational opportunities. Additional information about how to use the interactive map, including a YouTube tutorial, can be found on the DECInfo Locator webpage. Check our layer description web page to see what is available, including layer icons, and how often it is updated.

Calendar of All Scheduled Public Meetings and Comment Periods - for sites in DEC's cleanup programs in Region 1.

Records and documents for cleanup sites in region 1 are available through DECinfo Locator or the Site Remedial Database Search.

Nassau County

Northrop Grumman - Bethpage Facility (130003A) and Naval Weapons Industrial Reserve Plant Site (130003B)

NYSDEC Announces an Agreement with Northrop Grumman to Hydraulically Contain the Navy Grumman Groundwater Plume

The New York State Department of Environmental Conservation (NYSDEC) has reached an agreement with Northrop Grumman Systems Corporation (Grumman) and finalized a proposed Consent Decree regarding the remediation of the Navy Grumman groundwater plume located in Bethpage, New York. A link to the proposed Consent Decree is included below and is available for public comment until October 22, 2021 at 5:00 p.m. The public comment period will be extended until December 7, 2021.

Written Comments must be submitted to the contact listed below by close of business December 7, 2021.

The proposed Consent Decree formalizes understandings reached in December 2020 between NYSDEC and Grumman to advance the company's actions to install additional extraction wells, construct and operate treatment plants, and return the treated water to the aquifer system as part of a comprehensive plan to contain and clean up the Navy Grumman groundwater plume. The proposed settlement also requires the company to undertake additional work within the plume and pay more than $60 million in compensation to New York State and affected water districts in the form of Natural Resource Damages. NYSDEC encourages all interested community residents and other stakeholders to comment on the proposed decree before it is submitted to federal court for final approval.

Contact: Andrew Guglielmi, NYS DEC - Office of General Counsel, 625 Broadway, Albany, NY 12233-5253, Phone: (518) 402-9185, E-mail:

Link to Proposed Consent Decree: Proposed Consent Decree, September 22, 2021 (PDF, 366 Pages, 4.9 MB)

Amended Remedy Selected for Hydraulic Containment of the Navy Grumman Groundwater Plume
NYSDEC issued a Fact Sheet (PDF) on December 20, 2019 announcing the release of the Amended Record of Decision (AROD) (PDF). The selected remedy outlined in the AROD details the construction, long-term operation and maintenance of a full containment and treatment system to effectively halt further spread of the Navy Grumman groundwater plume.

The selection of a final remedy to hydraulically contain the Navy Grumman groundwater plume comes after the release of the Proposed Amended Record of Decision on May 23, 2019 and a 45-day comment period from May 23, 2019 - July 8, 2019. The AROD contains a Responsiveness Summary that includes the Department's responses to over 200 comments that were received during this 45-day comment period.

Documents Related to the Proposed Amended Remedy Available Online:

Northrop Grumman Implementing OU3 Remedy
In accordance with the Northrop Grumman - Bethpage Facility Record of Decision - OU3 (PDF) (2.6 MB) issued March 29, 2013, Northrop Grumman is currently implementing remedial activities at the Former Grumman Settling Ponds/Former Ballfield Area.

U.S. Navy Implementing OU4 Remedy
In accordance with the 2018 United States Navy Operable Unit 04 Record of Decision (PDF, 102 pages, 3.9 MB) issued August 2018, the U.S. Navy is currently implementing remedial activities at the Former Drum Marshaling Area.

Additional information and documents are also available on the Northrop Grumman - Bethpage Facility Web Page.

Pall Corporation - 130053B
The Pall Corporation Site Operable Unit Number 02 - Record of Decision (PDF) (1.3 MB) was issued March 2013. The site is located in Glen Cove, Nassau County.

Solvent Finishers - 130172
The Record of Decision for this State Superfund Project was issued July 2016. See the Solvent Finishers Site Web page for documents and more information.

Suffolk County

Dzus Fastener Co., Inc. - Site No. 152033
Please see the Dzus Fastener Co. Inc. Web Page for site-related information and documents.

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