Status

September 2025 Quarterly Update

Residential Properties Remediation – Complete

Remediation and restoration activities are complete on all properties scheduled to be remediated under the Residential unit and EPA has issued its final approval of the remediation work. Sherwin-Williams will continue to monitor the restoration of vegetation in regulated areas as required under the New Jersey Department of Environmental Protection (NJDEP) land use permits.

Route 561 Dump Site – Soils/Sediments Complete

Remediation and restoration activities are complete on all properties associated with the Route 561 Dump Site unit. Sherwin-Williams will continue to monitor the restoration of vegetation in regulated areas as required under the NJDEP land use permit. Groundwater associated with this unit will continue to be monitored. 

The United States Avenue Burn Site – Soils/Sediments Complete

Remediation and restoration activities are complete on all areas under the United States Avenue Burn Site unit. Sherwin-Williams will continue to monitor the restoration of vegetation in regulated areas as required under the NJDEP land use permit, as well as perform post-remediation groundwater and surface water monitoring. 

The Former Manufacturing Plant (FMP) Soils – Phased Remediation Underway

The EPA-issued Record of Decision (ROD) for the FMP unit outlines three distinct remedial approaches to address contaminated soils at the FMP, sediments in a portion of Hilliards Creek adjacent to the FMP, as well as an area of light non-aqueous phase liquid (LNAPL) contamination located along the eastern side of the FMP. The FMP soils work has been divided into several subareas to allow for phasing of activities.  

• Remediation of Lot 4 and the United States Avenue North subarea is complete.
• Remediation of the 6 East Clementon / 10 Foster Avenue subarea is complete. Restoration of the area is substantially complete.
  • Final restoration of 10 Foster Avenue will occur following completion of the Silver Lake remediation.
  • The Borough of Gibbsboro plans to construct a parking lot and park on 6 East Clementon. 
  • Foster Avenue will be reopened once the culvert restoration is complete, which is expected in early October.
• Sherwin-Williams has received the final approvals for the remediation of the United States Avenue South subarea. Mobilization and construction are expected to begin by November 1, 2025.  
• EPA has approved the Remedial Design for the 7 Foster Avenue subarea. Remediation activities are expected to begin in 2026 following the United States Avenue South subarea.
• Pre-Design Investigations (PDI) continue at the 1 Foster Avenue subarea, as well as in Upper Hilliards Creek, which extends from Foster Avenue down to West Clementon Road in Gibbsboro.  
• LNAPL located within and adjoining the eastern side of the FMP will be remediated using enhanced bioremediation along with soil vapor recovery. A pilot study to provide additional data needed for the remedial design was completed in September.
  

Waterbodies Unit – PDI/Remedial Design/Remediation

Contaminated sediments and floodplain soils in Silver Lake, Bridgewood Lake, Kirkwood Lake and Hilliards Creek will be addressed in a phased approach. Under the EPA-approved remedy, remediation will occur on the upstream Silver and Bridgewood lakes, followed by the Hilliards Creek floodplain and Kirkwood Lake.

• The remediation of Silver Lake in Gibbsboro is underway. Remediation of the lake is expected to be completed in November 2025, followed by lake restoration.     
• Pre-design investigations of Bridgewood Lake and adjacent upland areas are ongoing. 
• Sherwin-Williams initiated a series of wetland surveys, tree surveys and cultural resource evaluations along Hilliards Creek extending from West Clementon Road down to the inlet of Kirkwood Lake. The first phase of PDI field work along Hilliards Creek from West Clementon Road to Hiliards Road is expected to begin later this fall, pending receipt of all approvals. 
• EPA has approved the Remedial Design for Kirkwood Lake.  Permit equivalency applications are under review by the NJDEP. Sherwin-Williams and Camden County continue to evaluate the potential for accelerating the dredging of Kirkwood Lake before or concurrently with the dredging of upstream areas of the Waterbodies unit. At this time, there is no agreement or schedule in place for accelerating the dredging.
  

Former Manufacturing Plant Groundwater – Remedy Decision Phase

The EPA released a Proposed Remedial Action Plan (PRAP) to address groundwater contamination within the FMP. A public meeting was held on August 7, 2025, and EPA accepted public comments through August 26, 2025.  EPA is expected to release a Record of Decision by the end of September.

Following release of the Record of Decision, EPA and Sherwin-Williams will work together to finalize a modification to the Consent Decree to incorporate the remedy decision.  

United States Avenue Sanitary Sewer Extension

The Sherwin-Williams Company is installing sanitary sewers adjacent to the Former Manufacturing Plant and will connect residential properties on United States Avenue and Foster Avenue currently unserved by sanitary sewers.

• Significant progress has been made.  Additional system work and utility connections will be performed, followed by connections to the individual properties.  
• Periodic road and lane closures along Foster Avenue, United States Avenue and Berlin Road will still be required for the final phases of construction and sewer connections.