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Record of Decision System (RODS)

DAVISVILLE NAVAL CONSTRUCTION BATTALION CENTER

Abstract

Site Name:  DAVISVILLE NAVAL CONSTRUCTION BATTALION CENTER
Address:  OFF SANFORD RD. 
City & State:  NORTH KINGSTOWN  RI  02818
County:  KENT
 
EPA ID:  RI6170022036
EPA Region:  01
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/541/R-97/157
ROD Date:  09/29/1997
Operable Unit(s):  01
 
Media:  Groundwater,sediment,wetlands,soil,shoreline
 
Contaminant:  Municipal type wastes, construction debris, rubble, preservatives, paint thinners, degreasers, solvents, PCB oil, asbestos, ash, sewage sludge, waste fuel oil
 
Abstract:  The former U.S. Naval Construction Battalion Center (NCBC) Davisville, located in North Kingstown, Rhode Island, is a National Priorities List (NPL) site. NCBC Davisville is located in the Town of North Kingstown, Rhode Island, approximately 18 miles south of the state capital, Providence. A significant portion of the NCBC Davisville facility is located adjacent to Narragansett Bay. NCBC Davisville is composed of three areas: the Main Center, the West Davisville storage area, and Camp Fogarty--a training facility located approximately 4 miles west of the Main Center. Camp Fogarty was transferred to the U.S. Department of the Army in December 1993, and now is assigned to the Rhode Island National Guard. Adjoining the southern boundary of the Main Center is the decommissioned Naval Air Station (NAS) Quonset Point, which was transferred by the Navy to the Rhode Island Port Authority (currently named the Rhode Island Economic Development Corporation) and others between 1975 and 1980.In 1939, Quonset Point was acquired by the Navy to establish a Naval Air Station, with construction beginning in 1940. By 1942, the operations at NAS Quonset Point had expanded into what is now called NCBC Davisville. Land at Davisville adjacent to NAS Quonset Point was designated the Advanced Base Depot. Also in 1942, the Naval Construction Training Center, know as Camp Endicott, was established to train the newly established construction battalions.A 1939 aerial photograph of Allen Harbor area depicts the landfill as an undeveloped open grass field rimmed with shrubs and bushes. From 1946 to 1972, the Allen Harbor Landfill was used for the disposal of waste material generated by NCBC Davisville and NAS Quonset Point. Reportedly, a variety of waste, including municipal-type waste, construction debris, rubble, preservatives, paint thinners, degreasers (e.g., solvents), polychlorinated biphenyl (PCB) oil, asbestos, ash, sewage sludge, and waste fuel oil were disposed of in the landfill, usually including burning the waste and covering it with soil. The existing landfill cover is discontinuous and inadequately graded, with building debris and rusted metallic objects visible at various locations across the site, including the shoreline and harbor-side face of the landfill. To date, no cleanup actions have been conducted at the site. A more detailed description of the site use and response histories can be found in the Phase III Remedial Investigation Report (EA 1996).
 
Remedy:  The selected remedy action is a multimedia cap. The selected multimedia cap alternative includes the following components: regrade the site and construct surface controls to minimize erosion and to promote proper runoff; construct a landfill cover consisting of multiple soil layers and two impermeable layers that will comply with current federal and state laws; construct an appropriate landfill gas venting/management system which includes fencing around venting locations(s); as warranted, remove (and place under the cap) localized areas of affected sediment from the intertidal zone of the shoreline; construct revetment for shoreline stabilization; create wetlands along the shoreline of the site as determined appropriate and feasible during design studies; and establish institutional controls as follows. Institutional controls would involve: implementing appropriate land use restrictions, which may include deed restrictions regarding site and groundwater use; installing and maintaining new warning signs to inform the public of the Rhode Island Department of Environmental Management (RIDEM) ban on shellfishing in the harbor; and conducting long-term monitoring of landfill gas, groundwater, sediment, and shellfish quality to evaluate the effectiveness of the remedy. If monitoring indicates that additional measures are needed to protect human health and the environment, then the Navy will conduct additional remedial actions, as appropriate, and conduct 5-year reviews.
 
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