AOC No. |
Name | Proposed Remedial Actions | Basis for Action | Current Status | Remedial Action Reference |
Radiologically Contaminated Soils | |||||
1 |
Former Hazardous Waste Management Facility (HWMF) | Excavation with off-site disposal of approximately 35,000 cubic yards of contaminated soil, debris and sediments. Habitat restoration of the wetland. Demolition and disposal of facilities and buildings. Institutional controls and monitoring. | Protect groundwater from Strontium-90. Achieve 15 mrem/yr cleanup goal for future industrial land use. | Planned action upon ROD approval. | CDM, 1999a BNL, 1999 |
6 |
Reclamation Facility (Building 650) Sump and Outfall Area | Excavation with off-site disposal of soil contaminated with long-lived radionuclides near Building 650 and at the sump outfall area. Excavation with off-site disposal of pipe (and associated contaminated soils) between the decontamination pad and outfall area. Excavate and consolidate soils contaminated with short-lived radionuclide with AOC 1 soils for off-site disposal. Remove contaminated concrete at decontamination pad and dispose of off-site. Post-excavation soil sampling and dose assessment. Institutional controls and monitoring. | Protect groundwater from Strontium-90. Achieve 15 mrem/yr remediation goal for future residential land use. | Interim Remedy (fencing and access restrictions) in place. Planned action upon ROD approval. | CDM, 1999a BNL, 1999 |
10 |
Waste Concentration Facility | Remove and dispose of off-site contaminated concrete and asphalt pad at D Tanks Area, out-of-service piping and six 8,000 gallon underground tanks. Excavate/consolidate soils with AOC 1 for off-site disposal. Post- excavation soil sampling and dose assessment. Institutional controls and monitoring. | Protect groundwater. Achieve 15 mrem/yr remediation goal for future residential land use. | D Tanks removed. Planned action upon ROD approval | CDM, 1999a BNL, 1999 IT, 1999 |
16 |
Aerial Survey Results (Sub-AOCs 16E, 16F, 16G, 16S.1-4 and 16S.6a-f) | Excavate soils above cleanup goals and/consolidate soils with AOC 1 for off-site disposal. Extent of excavation to be determined during design phase. Post-excavation soil sampling and dose assessment. Institutional controls and monitoring. | Achieve 15 mrem/yr remediation goal for future residential land use. Achieve 400 mg/kg cleanup level for lead at AOC 16S.3. |
Planned action upon ROD approval. | CDM, 1999a BNL, 1999 IT, 1999 |
16 |
Aerial Rad Survey Results (Sub-AOCs 16A-D, 16I, 16J and 16M-Q) | Active facilities that will be monitored. Institutional controls. Facilities will be decontaminated and decommissioned upon closure. | Monitor active facilities to insure that unacceptable environmental releases do not occur. | Planned action upon ROD approval. | BNL, 1999 IT, 1999 |
17 |
Low Mass Criticality Facility | Institutional controls and monitoring | Achieve 15 mrem/yr remediation goal for future residential land use. | Planned action upon ROD approval. | IT, 1999 |
18 |
Alternating Gradient Synchrotron Storage Yard | Institutional controls and monitoring. | Achieve 15 mrem/yr remediation goal for future residential land use. | Planned action upon ROD approval. | IT, 1999 |
Other Areas of Concern | |||||
2F |
Ash Pit | Soil cap. Annual visual inspection to ensure ash is not exposed at surface. Institutional controls and monitoring. | Protection from direct exposure to lead. | Planned action upon ROD approval. | CDM, 1999a BNL, 1999 |
3A |
Wooded Wetland | Institutional controls and annual monitoring of surface water and sediments. | Protection of State endangered species. | Monitoring performed with current landfill monitoring. | CDM, 1999b BNL, 1999 |
8 |
Upland and Recharge Meadow Marsh | Excavation of contaminated sediments with off-site disposal. Reconstruction of the wetlands. Maintenance and monitoring. | Protection of State endangered species. | Planned action upon ROD approval. | CDM, 1999a CDM, 1999b BNL, 1999 |
24E & 24F |
Recharge Basins HS and HW | Institutional controls. Monitoring and maintenance under current NYSDEC SPDES permit and BNL Implementation of Tiger Salamander Habitat Management Plan. | Protection of State endangered species. | Planned action upon ROD approval. | CDM, 1999a BNL, 1999 |
Removal Actions Selected as Final Actions | |||||
2A & 2E |
Former Landfill Areas and Slit Trench | Geomembrane cap. Institutional controls and monitoring including methane monitoring, groundwater sampling, monthly inspections. | Protect groundwater. Presumptive remedy for landfills. | Completed October 1996. | CDM, 1995a BNL, 1996a |
3 |
Current Landfill | Geomembrane cap. Institutional controls and monitoring including methane monitoring groundwater sampling, monthly inspections. | Protect groundwater. Presumptive remedy for landfills. | Completed November 1995. | CDM, 1995a BNL, 1994 |
16S |
National Weather Service Stockpile | Fill for Former Landfill. Off-Site Disposal of contaminated portion. | Achieve 15 mrem/yr remediation goal for future residential land use. | Completed October 1996. | CDM, 1995a BNL, 1996a |
1B |
OU I Groundwater | Pump and treat. Groundwater monitoring. | Prevent migration of off-site contaminant and achieve MCLs for groundwater. | Pump-and-treat system completed December 1996. | CDM, 1995b BNL, 1996b |
2B & 2C |
Chemical/Animal Pits and Glass Holes | Excavation and off site disposal of buried wastes and contaminated soils. | Protect groundwater. Presumptive remedy for landfills. | Excavation completed September 1997. | CDM, 1997a BNL, 1997 |
2D |
Interim Landfill | Geomembrane cap. Institutional controls and monitoring including methane monitoring, groundwater sampling, monthly inspections. | Groundwater protection. Presumptive remedy for landfills. | Completed. | CDM, 1995a BNL, 1996a |