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NJ Involvement plan

Solvay Specialty Polymers USA, LLC (Syensqo)

Addressing PFAS at and in the vicinity of its West Deptford, New Jersey facility

Solvay Specialty Polymers USA, LLC, a Syensqo SA company, is committed to engaging with stakeholders who wish to better understand the company’s operations. As a science company with sustainability at its core, Syensqo cares deeply about the communities in which it operates. In July 2021, we eliminated the use of fluorosurfactants at our West Deptford site with our launch of non-fluorosurfactant technologies. 

This document repository serves to provide the community with key information on the environmental work being completed in West Deptford, NJ.

The documents available on this page detail the ongoing investigation and remediation activities regarding certain per- and polyfluoroalkyl substances (PFAS) at, and in the vicinity of, Syensqo’s facility located at 10 Leonard Lane in West Deptford, New Jersey and include:

  • Remedial investigation results, work plans, and reports.
  • Feasibility studies, remedy selection documents and final remediation documents.

Syensqo is committed to completing the investigation and remediation of any PFAS impacts scientifically attributable to our facility.

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Documents

Documents related to the Solvay Specialty Polymers USA LLC Public Participation Plan can be downloaded here. All documents are in Adobe PDF format.
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If you have any questions, please call our Community Information Line 800-936-8159 or email contact_westdeptford@syensqo.com.

Who is treating/testing the drinking water provided to homes and businesses through the municipal water systems? 

Each municipality tests and treats its own municipal drinking water supply to ensure it meets health and safety standards set by the United States Environmental Protection Agency and the New Jersey Department of Environmental Protection.

For example, the Township of West Deptford tests and treats its municipal drinking water. For more information, we recommend calling the water department in your municipality.

Now that the comment period is over, can I still submit questions? 

Yes. We encourage you to contact us with your questions by calling our Community Information Line 800-936-8159 or emailing us at contact_westdeptford@syensqo.com.

How long will the remediation take?

Remedial investigations and environmental remediation both take considerable time. Specialty Polymers has made significant progress in its investigation and implemented interim remediation steps for groundwater while the investigation continues. We do not yet have a defined timeframe for completion of the investigation or the final remediation.

What is being done to restore the municipal drinking water wells that are not operational due to contamination?

Specialty Polymers has provided funding to West Deptford, and will provide additional funding if needed, to enable the municipal water supply to meet PFAS drinking water standards. The municipality installs and maintains the treatment systems.

Specialty Polymers has also provided $101 million to the New Jersey Department of Environmental Protection (NJDEP) under an agreement. From that fund, NJDEP may provide funding to support treatment systems as necessary on other municipal wells in the region.

Are there any plans to provide treatment in homes served by the public water system?

Water served to residences by municipal water systems is already tested and treated, if necessary, by the municipality. There are no plans to provide additional treatment to homes served by a municipal water system.

Did Syensqo purchase Solvay Specialty Polymers USA, LLC? 

No, Syensqo originated from the split of Solvay Specialty Polymers’ former parent company into two independent companies in December 2023. The West Deptford facility became part of Syensqo with the creation of the two companies. 

August 12, 2025Proposed Surface Water and Porewater Sampling in Main Ditch
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C1
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C2
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C3
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C4
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C5
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C6
August 5, 2025Technical Memorandum - First Quarter 2025 Groundwater Results - Appendix C7
July 22, 2025Response to NJDEP Comments – Interim Remedial Investigation Report for Drainage Features
July 22, 2025Response to NJDEP Comments –Remedial Investigation Work Plan for Surface Water / Groundwater Interaction Assessment
June 1, 2025Major Diversion Water Allocation Permit Aquifer Test Waiver Request
May 8, 2025120-Day Engineered Response Action Report for 437 Swedesboro Ave
May 6, 2025Response to NJDEP Comments – Multiple Documents
May 5, 2025May 5, 2025 Public Meeting Boards
May 2, 2025Interim Remedial Investigation Report - Groundwater
April 21, 2025Response to Public Comments Regarding the Public Participation Plan
March 28, 2025JCO Potable Well Update
March 20, 2025Annual Monitoring and Maintenance Report – IEC Update
March 19, 2025Discharge to Groundwater Proposal: Permit-by-Rule Authorization Request (Aquifer Injection Testing)
March 18, 2025Technical Memorandum - Fourth Quarter 2024 Groundwater Results
March 18, 2025Technical Memorandum - Fourth Quarter 2024 Groundwater Results - Appendix C1
March 18, 2025Technical Memorandum - Fourth Quarter 2024 Groundwater Results - Appendix C2
March 18, 2025Technical Memorandum - Fourth Quarter 2024 Groundwater Results - Appendix C3
March 18, 2025Technical Memorandum - Fourth Quarter 2024 Groundwater Results - Appendix C4
March 18, 2025Technical Memorandum - Fourth Quarter 2024 Groundwater Results - Appendix C5
March 10, 2025Public Participation Plan
March 5, 2025Technical Memorandum - Investigation Work Plan - Man Made Ditch North of the Fenceline
February 7, 2025Technical Memorandum - Proposed Field Assessment of Polymer Building Roof Wipe Sampling
January 30, 2025Memorandum - Environmentally Sensitive Natural Resources
January 30, 2025Technical Memorandum - Conceptual Site Model
January 25, 2025West Deptford Meeting Boards
January 21, 2025Technical Memorandum - Third Quarter 2024 Groundwater Results - Appendix
January 21, 2025Technical Memorandum - Third Quarter 2024 Groundwater Results