Status

March 2026 Quarterly Update

Residential Properties Remediation – Complete

Soil remediation and restoration activities are complete on all properties under the Residential unit.  Monitoring of restored vegetation in regulated areas will be completed in 2026. Following submittal of Sherwin-Williams final annual report, NJDEP is expected to close out all residential land use permits in 2027.

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 is complete on Lot 4, the United States Avenue North, and the 6 East Clementon / 10 Foster Avenue subareas. 
• Remediation of the United States Avenue South subarea is underway and is expected to continue through April 2026. The Gibbsboro Green Trail along United States Avenue will be periodically closed during excavation activities. 
• EPA has approved the Remedial Design for the 7 Foster Avenue subarea. Remediation activities are expected to begin in May 2026 following completion of the United States Avenue South subarea.
• Sherwin-Williams is preparing the remedial design for an extended Soil Vapor Extraction (SVE) pilot study on the 1 Foster Avenue subarea. The SVE system is expected to be installed this spring and operated for approximately six months. Sherwin-Williams is also preparing the remedial design for excavation of contaminated soils on 1 Foster Avenue, which is expected to occur in early 2027.  
• LNAPL located within and adjoining the eastern side of the FMP will be remediated using enhanced bioremediation along with SVE. Sherwin-Williams continues to advance the Remedial Design for the bioremediation and SVE program.
• Pre-Design Investigations (PDI) continue in Upper Hilliards Creek, which extends from Foster Avenue down to West Clementon Road in Gibbsboro.

Waterbodies Unit – Phased Remediation Underway

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 complete. Fish restocking will take place this spring.  The wooden boardwalk at the base of the lake will be repaired prior to reopening it to the public.     
• Pre-design investigations of Bridgewood Lake and adjacent upland areas are nearly complete. Remedial design for the lake dredging and remediation of shoreline soils is expected to begin in the next few months. 
• Sherwin-Williams has submitted a proposed PDI Work Plan for soil sampling along Hilliards Creek extending from West Clementon Road to Hilliards Road in Gibbsboro. Soil sampling is expected to begin in 2026 following approval of the Work Plan.
• The Remedial Design for an accelerated dredge of Kirkwood Lake was completed and approved by EPA, however, the NJDEP permits necessary for accelerating the dredge still have not been approved. Once permits are approved, contractor selection, pre-dredge mobilization and staging are expected to take one year or more. 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 Record of Decision finalizing the remedy for groundwater within the FMP on September 26, 2025. EPA is currently drafting a Scope of Work and will work with Sherwin-Williams to finalize a modification to the Consent Decree. 

EPA is currently drafting a Scope of Work and will work with Sherwin-Williams to finalize a modification to the Consent Decree. Once the modification is approved, Sherwin-Williams will move forward on the groundwater remedy.   

United States Avenue Sanitary Sewer Extension

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

• Utility connections and additional system work will be performed this spring, followed by connections to the individual properties.  
• Additional short-term road and lane closures along Foster Avenue, United States Avenue and Berlin Road will be required for the final phases of construction, sewer connections, and road repaving.