Officials from the United States Environmental Protection Agency (EPA) have released a proposed cleanup plan for a portion of the Raymark Industries, Inc. Superfund Site (Raymark).
The 30-day formal public comment period on the Raymark Proposed Plan started on June 30, 2016 and will end on July 29, 2016.
This proposed plan is part of a conceptual comprehensive cleanup approach and is based on a combination of remedial alternatives proposed in four separate Feasibility Study reports for four different Operable Units (OUs).
These final cleanup actions and the interim actions that are presented for public consideration in the proposed plan are projected to cost $95.7 million and include:
- Excavation and removal of the top two feet of an estimated 4,650 cubic yards of sediment from the channel of Upper Ferry Creek from Interstate 95 to the Broad Street bridge;
- Excavation and removal to a depth of four feet of an estimated 22,600 cubic yards of soil that meets the definition of Raymark Waste from the banks of Upper Ferry Creek;
- Excavation and removal to a depth of four feet of an estimated 7,600 cubic yards of wetland soil that meets the definition of Raymark Waste from abutting wetland areas;
- Replacement of excavated sediment and Raymark Waste with clean material; the bottom of each excavation would be lined with a geotextile to prevent mixing and serve as a warning layer where
- Raymark Waste remains below four feet;
- Restoration and revegetation of excavated areas with native species, and restoration of wetlands;
- Dewatering of sediment and Raymark Waste as necessary for transport;
- Sediment and Raymark Waste containing more heavily contaminated material that exceeds certain regulatory limits would be shipped to a licensed out-of-town disposal facility;
- Consolidation of excavated sediment and Raymark Waste at the Raybestos Memorial Ballfield (OU4);
- Sediment and Raymark Waste that exceeds the capacity of OU4 would be shipped to a licensed out-of-town disposal facility;
- Placement of institutional controls to limit future excavation, groundwater use, and other activities that could pose a risk, where necessary;
- Long-term monitoring, and operation and maintenance.