Record of Decision System (RODS)
NORFOLK NAVAL BASE (SEWELLS POINT NAVAL COMPLEX)
|Site Name:||NORFOLK NAVAL BASE (SEWELLS POINT NAVAL COMPLEX)|
|City & State:||NORFOLK VA 23511|
|NPL Status:||Currently on the Final NPL|
|ROD Type:||Record of Decision|
|Media:||Groundwater, Soil, Surface Water|
|Contaminant:||Base Neutral Acids, Dioxins/Dibenzofurans, Inorganics, Metals, PAH, PCBs, Pesticides, VOC|
Please note that the text in this document summarizes the Record of Decision for the purposes of facilitating searching and retrieving key text on the ROD. It is not the officially approved abstract drafted by the EPA Regional offices. Once EPA Headquarters receives the official abstract, this text will be replaced.
The Naval Base Norfolk was placed on the National Priorities List (NPL) in April 1997.
Operable Unit 2 (OU2):
OU2, which addresses soil and groundwater at the CD Landfill (Site 6), is located on the Naval Base, Norfolk, south of Admiral Taussig Boulevard. The site is bordered by the Naval Exchange area to the north, Naval Air Station (NAS) to the east, a long-term parking facility to the south and Hampton Boulevard to the west. Seabee Road cuts across the western portion of the site.
Originally, the CD Landfill was part of the historic Bousch Creek drainage system. The Navy purchased the land in 1974. Prior to that time the land was owned and operated as a rail yard by the Western Railway Company. The site was formerly used for the disposal of construction debris and other material. At present the majority of the 22-acre landfill is vegetated due in part to roadway construction restoration activities. Seabee Road has been landscaped with trees and shrubbery and a fence has been installed on either side to eliminate public access from the right-of-way to the landfill area. Two drainage ditches border the site to the north and south. These ditches flow eastward into culverts beneath the NAS which then convey surface water runoff to Willoughby Bay.
The site incorporates two areas of landfilling operations: the easternmost (unpermitted) section and the western (permitted) section. The unpermitted portion of the landfill was filled first and was used for demolition debris and inert solid waste, fly ash, and incinerator residue. From 1974 to 1979, ash residues, sandblasting grit and spent rice hulls were deposited in the landfill. Landfilling operations continued in the western portion of the site until 1987.
1979, soil and fill material from a portion of the southeast corner of the site was removed and regraded to allow for runway expansion at the NAS. The runway expansion design specified that excess material was to be spread over the landfill and not removed from the site.
In late September 1993, most of the existing debris mounds situated in the north central portion of the landfill were leveled and spread around the site to reduce the amount of standing water which accumulated after rain events. A small area of debris remains in the north central part of the site.
A Record of Decision (ROD) addressing OU2 was completed in September 1998.
The selected soil remedy for the CD Lanfill Site is the construction of a solid waste landfill cap that meets the closure requirements of the Virginia Soild Waste Management Regulations for an industrial waste landfill, and the implementation of institutional controls. The selected groundwater remedy for the CD Landfill Site is institutional controls with monitoring. The selected alternative shall include the implementation of a groundwater and surface water monitoring program, land use restrictions, and institutional controls. The Navy shall implement the same institutional controls as described for the selected soil remedy.
Estimated Capital Costs of soil remedy: $2,532,000
Estimated Annual O&M Costs of soil remedy: $6,400
Estimated Present Worth Costs of soil remedy: $2,656,000
Estimated Capital Costs of groundwater remedy: $0
Estimated Annual monitoring costs of groundwater remedy: $8,100
Estimated Present Worth Costs of groundwater remedy: $125,000
Estimated Present Worth Costs: $2,781,000
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