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Record of Decision System (RODS)



City & State:  BREMERTON  WA  98310
County:  KITSAP
EPA ID:  WA2170023418
EPA Region:  10
NPL Status:  Currently on the Final NPL
ROD Type:  Record of Decision
ROD ID:  EPA/541/R-97/047
ROD Date:  12/13/1996
Operable Unit(s):  04
Media:  Groundwater,Soil
Contaminant:  VOCs, SVOCs, PCBs, TPHs, inorganics, pesticides, aroclors
Abstract:  The Bremerton Naval Complex is located in Bremerton, Washington. The complex includes two separate Navy commands: Puget Sound Naval Shipyard (PSNS) and the Fleet and Industrial Supply Center (FISC). The Bremerton Complex also includes four operable units (OUs). This remedy applies to the Naval Supply Center (NSC) OU. When investigation activities were being planned at this site, FISC was known as the NSC, and thus the NSC OU.The Bremerton Naval Complex includes 354 acres of dry land, of which 326 acres are occupied by PSNS, and 28 acres are occupied by FISC. Off-site railroad acreage and submerged land mass, totaling approximately 1,000 acres, brings the combined total for all lands to 1,347 acres. Initially the tidelands, the land occupied by OU NSC, were created between approximately 1900 and 1950 as the Bremerton Complex expanded. It was created by placement of miscellaneous fill materials. The ground surface throughout OU NSC is flat and almost entirely paved or covered by buildings.The Bremerton Naval Complex became the region's first naval installation with the purchase of 190 acres of land in 1891. The initial area has been supplemented by additional land purchases and filling of swampy land in intertidal areas. Prior to World War I, barracks to house military recruits were added in the western portion of the shipyard. A dry-dock completed in 1919 was the largest in the world at that time. Between 1919 and 1921, the Navy excavated a considerable portion of the hillside nearest Sinclair Inlet, using the soil to expand the existing low-lying industrial area in response to a need for additional space to support the Pacific Fleet. World War II led to additional expansion at the shipyard, and two new piers, two more dry-docks, and additional shore facilities were built.In 1961, the Naval Complex began participating in the Navy's nuclear power program. Ship and submarine overhaul were major activities during the 1960s. The Naval Complex remains in the forefront of aircraft carrier design work, nuclear propulsion and repair, and numerous other specialties. It is currently the largest ship repair and overhaul facility on the West Coast.Most of the current graded surface at OU NSC was created from fill material. The site was created through a series of fill operations. Some of this material was excavated from the natural hillside. The remainder is believed to have consisted of miscellaneous solid waste from shipyard operations, including excavated soils and sediments, construction debris, and spent sandblast grit. No detailed records were maintained regarding the filling activities or the materials used as fill.FISC is bordered by Sinclair Inlet, T Street, Z Street, and Rodgers Avenue. FISC is surrounded on three sides by PSNS, but functions as a separate Navy Installation, primarily in supplying materials and equipment for the Bremerton Navy Complex. FISC has a large but relatively old set of structures, including numerous buildings and a former supply pier. Because of FISC¿s role as a primary materials supplier to the Bremerton Complex, the buildings on site are primarily warehouses and offices for staff involved in supply functions.A concrete quay wall reaching to an estimated depth of 40 feet below the ground surface extends along the full length of the waterfront at OU NSC. The quay wall was apparently installed in stages during the land-filling process, presumably to help control erosion of the fill by tidal action.When commissioned in 1967, FISC was assigned management responsibilities to fill the increasing need for Naval support in the Pacific Northwest. The OU NSC area has provided supply and support services for Navy activities in the Puget Sound region, throughout the Northwest, and around the Pacific Rim since the 1930s. Some of these activities involved the storage and transfer of hazardous substances. Materials have been stored both outdoors and indoors at OU NSC.
Remedy:  This operable unit is one of four being evaluated at the Bremerton Naval Complex. The remedy selected for this operable unit addresses the most immediate threats for this portion of the complex. However, the ongoing studies being conducted for Operable Unit B include detailed investigations of groundwater throughout the complex and the marine environment adjacent to the complex. The selected remedy for OU NSC includes: controlling access to the Bremerton Naval Complex through security measures such as fences and signs; establishing administrative measures to prohibit use of groundwater from the site; implementing deed restrictions to limit future use of the site; developing a management excavation plan to limit potential contact with, and assure appropriate handling and disposal of soils excavated during future excavation connected with any construction activity at the site; upgrading site paving to reduce the possibility of contact with contaminated soil and limit the potential for precipitation to transport contaminants from soil to the groundwater; collecting and disposing of sediments and debris accumulated in stormdrain lines serving the OU; and conducting environmental monitoring to detect any change in the quality of groundwater at the site.
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