March 2023 Quarterly Update

Residential Properties Remediation – Complete
Remediation and restoration activities are complete on all properties scheduled to be remediated under the Residential unit. 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 permit.

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 is currently working on administrative documents and filings to close-out soil and sediment remediation under this project 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 be monitored for the next several years.

The United States Avenue Burn Site – Remediation Underway
The EPA-selected remedy for the Burn Site includes excavation, transportation and off-site disposal of contaminated soils and stream sediments, followed by restoration activities. 

Pre-construction staging, mobilization and tree clearing activities were performed during the first quarter of 2023. Excavation activities are currently taking place on the west side of United States Avenue along the historic Lucaston railroad tracks. The Gibbsboro multi-purpose Green Trail will be closed in this area until mid-April. Once this area is complete, remediation on the east side of United States Avenue will follow. The remediation work is expected to continue through 2023, followed by restoration activities. 

The Former Manufacturing Plant (FMP) Soils – Pre-Design Investigation
The EPA-issued Record of Decision (ROD) for the FMP Soils unit includes three distinct work areas requiring different remedial approaches. The Sherwin-Williams team began an extensive EPA-approved pre-design investigation in 2022. The investigation to fully define the areas requiring remediation continues at the FMP. The pre-design and remedial design phases for each area are expected to extend over multiple years.  

Waterbodies Unit – Pre-Design Investigation
The EPA-issued ROD for the Waterbodies unit addresses contaminated sediments and soils present within Hilliards Creek and its floodplain, as well as Silver Lake, Bridgewood Lake and Kirkwood Lake.

The Sherwin-Williams team is preparing the required documents and submittals to initiate pre-design investigation activities in Silver Lake, the first lake scheduled to be dredged. As currently envisioned, remediation of the lakes may occur prior to remediation of the Hilliards Creek floodplain. Additional information will be provided once the work plans are further developed. 

Former Manufacturing Plant Groundwater – Remedial Investigation
Sherwin-Williams is working with EPA to finalize the Remedial Investigation of the Groundwater unit. Once the Remedial Investigation is complete and approved, Sherwin-Williams will proceed with the Feasibility Study to evaluate alternatives for addressing groundwater contamination at the FMP.

Additional Activities

United States Avenue Sanitary Sewer Extension
Sherwin-Williams is working on the design of a sanitary sewer line extension along United States Avenue in Gibbsboro. This sewer line extension will help facilitate remediation work at and adjacent to the FMP. Construction of the sewer line extension is expected to begin in 2023. Following construction, connection of the new sewer line to individual properties will occur once the appropriate permits and approvals are obtained by the Borough of Gibbsboro.

Kirkwood Lake Accelerated Action
Sherwin-Williams has been working cooperatively with Camden County in evaluating options for potentially accelerating the dredging of Kirkwood Lake. Sherwin-Williams and the County have retained a firm to prepare specifications and designs for dredging of the lake.

The design firm performed pre-design field activities within Kirkwood Lake in late 2022 and early 2023. This pre-design investigation will provide the information needed to evaluate the feasibility of remediating Kirkwood Lake prior to completing the upstream areas. 

No agreement or schedule is in place at this time for the actual dredging. Extensive design and permitting is required, which will take a year or more, before any dredging work can be performed.  This work is being performed in parallel with other sections of the Waterbodies unit, by a separate project team, to ensure that any accelerated action of Kirkwood Lake does not delay efforts on upstream waterbodies.