Installation Restoration Program and Munitions Response Program Sites

Site 2 is a former waste disposal area covering approximately 5.7 acres in the southern portion of SJCA. In earlier documents, the Site 2 area was referred to as Dump B, Landfill B, and/or SWMUs 2, 3, and 4. The waste disposal area began operating in 1921 when refuse was burned on-site and used to fill the inlet. Mixed municipal wastes, organics, inorganics, solvents, waste ordnance, and abrasive blast media (ABM) from ship overhaul and repair operations were reportedly disposed of. The total voulme of waste prior to burning is reported to have been approximately 35,185 cubic yards (CY), and it is estimated that half of this waste was disposed of prior to 1942, when an incinerator was installed to replace the open-burning practices. The waste disposal area was closed sometime after 1947. In the center of Site 2 is a water body (inlet) which is directly connected to St. Juliens Creek via a low-flow culvert and is surrounded by brush, trees, and grass. Construction debris (concrete and brick) as well as ABM is visible on the ground surface.

A Remedial Investigation (RI) began in 1997 and was completed in 2004. The human health and ecological risk assessments conducted as part of the RI concluded that there is potential risk to human and ecological receptors from exposure to chemicals in soil and sediment (primarily inorganics, pesticides, and polyaromatic hydrocarbons [PAHs]). The RI recommended further evaluation of the potential for adverse effects to aquatic life in the inlet sediment, investigation of the potential source of volatile organic compound (VOC) contamination in inlet surface water, and additional investigation of shallow groundwater because the existing shallow monitoring wells were located outside of, or on the outer limits of, the waste disposal area and did not sufficiently characterize potential groundwater contamination within the waste area.

An Expanded RI was conducted in phases from December 2003 through July 2007 to address data gaps identified in the RI and during the phased investigation. Field activites included membrane interface probe (MIP) investigation, monitoring well installation, and groundwater sampling to further define the nature and extent of the shallow groundwater VOC plume and source area; deep aquifer testing to determine if VOCs have impacted the deep groundwater; storm water and surface water sampling to assess the source of VOCs in inlet surface water; sediment and sediment pore water sampling to further characterize ecological risks and to evaluate potential impacts to St. Juliens Creek; soil sampling to determine the presence/absence of natural attenuation parameters; direct-push technology (DPT) waste delineation to further delineate the horizontal and vertical extent of waste under the parking lot area; and a surface debris delineation to determine the spatial extent and type of surface debris in the wetland area. The results of the investigation are being incorporated into a Expanded RI Report. A Feasibility Study (FS) will be conducted to address any unacceptable risks identified at the site.

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Site 4 is a 8.3–acre landfill in the northeastern portion of SJCA located at the confluence of Blows Creek and the Southern Branch of the Elizabeth River. The first indication of activity at Site 4 is trenching identified on an aerial photograph from 1961. The trenches were filled with trash, wet garbage, and soil from subsequent trenches. Around 1970, sanitary landfill operations began at Site 4 in the marshes of Blows Creek. Disposal included primarily trash and wet garbage. Sanitary landfill operations continued until 1976, at which time trash and garbage were hauled to an off-site facility and inert construction material was then disposed of at the landfill. The wastes managed were primarily trash, wet garbage, construction material, and outdated civil defense stores. Some solvents, acids, bases, and polychlorinated biphenyls (PCBs) reportedly were disposed of. The total volume of wastes was estimated at 1.5 million cubic ft.

The Remedial Investigation (RI) for Site 4 was completed in March 2003. Potential human health and ecological concerns included risk from exposure to waste, inorganics and polycyclic aromatic hydrocarbons (PAHs) in soil, and mercury in drainage ditch sediment. The RI recommended an FS be prepared to evaluate remedial alternatives to mitigate risks from Site 4 and eliminate concern for continued transport of potential contaminants to Blows Creek via the site-related drainage ditches. Further evaluation of the potential for adverse effects to aquatic life in Blows Creek sediment was also recommended based on chemical concentrations of inorganics and pesticides in upland drainage ditch sediment/soil. A separate BERA for Blows Creek is currently being conducted to identify potential risk associated with possible historical contributions to Blows Creek from upland Navy IR Program sites, including Site 4.

As part of the Feasibility Study (FS) for Site 4, completed in March 2004, remedial alternatives were evaluated to minimize contact of human and ecological receptors with landfill contents, reduce infiltration and leaching of contaminants from the landfill to the groundwater, and prevent surface water run-on and control surface water runoff and erosion. A soil cover with removal of wetland debris, removal of the eastern drainage ditch, and Land Use Controls (LUCs) was recommended as the preferred alternative for Site 4.

The Proposed Plan (PP) for Site 4 was issued in May 2004 and identified the preferred alternative from the FS. No significant public comments were received. The Record of Decision (ROD) documenting the Selected Remedy was signed in September 2004. The Remedial Design (RD) for the Selected Remedy; soil cover with removal of wetland debris, removal of the eastern drainage ditch, and LUCs; was completed in November 2004. The Remedial Action (RA) was completed in October 2005 and a Remedial Action Completion Report (RACR), documenting the completion of the RA, was submitted in September 2006.

Annual visual soil cover and LUC inspections and voluntary groundwater performance monitoring are currently being conducted to ensure effectiveness of the cover is maintained. Additionally, because waste will remain onsite above levels that allow for unrestricted use and unlimited exposure (UU/UE), LUCs will be maintained within the boundaries of the landfill and CERCLA five-year site remedy reviews will be conducted.

Site 5 is the former Burning Grounds consisting of approximately 23 acres located in the northeastern portion of SJCA. Operations began at the Burning Grounds in the 1930s when waste ordnance materials, including black powder (mixture of charcoal, nitrate, and sulfur), smokeless powder (nitrocellulose), Explosive D (ammonium picrate), and Composition A-3 (contains RDX and wax), were disposed of by open burning. Tetryl, trinitrotoluene (TNT), fuzes, solvents, paint sludge, pesticides, and various types of refuse were also reportedly disposed of. The amount of ordnance disposed of varied from year to year and there is insufficient information to calculate the waste volume. In 1974, 427 tons of ordnance items reportedly were disposed of.

In mid-1977, the Burning Grounds was used for facility-wide ordnance and equipment decontamination. The decontamination included filling equipment from buildings with oil and straw and igniting them. Afterwards, the ground surface was reportedly covered with oil and straw and burned, the top 6 in. of soil was then diced, and the ground surface was covered with oil and straw and burned again. The site currently consists of an open field with a wetland in the central portion and a forested area in the southern portion.

Remedial Investigation (RI) field activities were conducted at Site 5 in phases from 1997 through 2003. Based on the waste delineation investigation conducted, it was determined that the extent of waste was greater than previously identified and the Site 5 boundaries were adjusted to reflect the extent of waste encountered. Potential human health and ecological risks from exposure to site soil and upland drainage sediment were identified (primarily inorgaincs and PAHs). The RI recommended additonal soil and groundwater sampling to further define the nature and extent of contamination. Confirmation groundwater sampling was recommended to confirm or deny isolated detections of inorganics at concentrations above Maximum Contaminant Levels (MCLs) in shallow groundwater and RDX in deep groundwater. Further evaluation of the potential for adverse effects to aquatic life in Blows Creek sediment was also recommended based on concentrations of inorganics and pesticides in upland drainage ditch sediment/soil.

The BERA for Blows Creek was conducted between 2003 and 2006 in order to identify potential risk associated with possible historical contributions to Blows Creek from upland Navy IRP sites, including Site 5. Results indicated limited potential for adverse effects to benthic-dwelling organisms from exposure to Blows Creek sediment based on the low frequency and magnitude of concentrations exceeding screening values and limited effects based on bioassay organisms response. Therefore, no further action (NFA) is required for Blows Creek. The NFA decision will be documented in the ROD for Site 5.

An Expanded RI began in 2003 and was completed in 2007. The Human Health Risk Assessment (HHRA) was revised to include the additonal data collected and to evaluate residential scenarios and indicated that groundwater presents potential risks to future residents. However, due to the variability in analytical results in shallow groundwater over time, additional groundwater samples were collected in 2006. The shallow groundwater HHRA was revised and after review of all of the groundwater data, shallow groundwater was risk managed with NFA. The results and risk management rationale for shallow groundwater are documented in an addendum to the Expanded RI. Based on the results of the Expanded RI, the areas posing human health and/or ecological risks that warrented further investigation and/or RA consist of the waste and burnt soil, and sporadic inorganics and pesticides in surface soil and drainage ditch sediment.

An EE/CA was conducted to identify and analyze removal action alternatives to mitigate potential risk in the waste/burnt soil area and impacted surface soil and drainage sediment areas. The recommended NTCRA involved excavation, disposal characterization, disposal of waste/burnt soil and impacted surface soil and drainage sediment, and restoration of the site as a mixed wetland/ upland habitat.

The NTCRA was initiated in December 2007; however, work was stopped based on MEC found during mobilization. Following resolution of an ESS, remobilization will occur and the NTCRA is expected to be completed in 2008.

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Site 6 was operated as part of the ordnance disposal operations at SJCA and has also been referred to as "Caged Pit."  The Small Arms Unit consisted of an 8-ft-wide by 20-ft long by 12-ft-high steel container underlain by a concrete pad, known as the caged pit. Interviews with former employees indicated that small items were transported into a steel container via a conveyor belt for destruction. Historical records do not indicate the dates of operation. A review of historical aerial photographs indicates that activities associated with Site 6 likely began around 1949 and continued through the 1980s.

The Initial Assessment Study (IAS) conducted at SJCA in 1981, revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 6, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated an unknown volume of small items, such as igniters and fuses, were burned in the unit. The RFA also reported that the Navy had filled in the area "during recent years" and recommended investigation of soil and groundwater.

As part of the Relative Risk Ranking (RRR) System Data Collection Report in 1996, one surface soil sample was collected from Site 6. With the exception of three pesticides and one metal, the detected compounds were at concentrations below background levels.

Due to its proximity to Site 5, this site was investigated with Site 5 during the Remedial Investigation (RI) completed in 2003. RI field investigation activities at Site 6 included a geophysical survey and the collection and analysis of surface and subsurface soil samples. No visual signs of waste or stained/burned soil were observed at Site 6; however, test pit debris (specifically pieces of concrete) may have been the remains of the pit. The Remedial Investigation/ Human Health Risk Assessment/Ecological Risk Assessment Report (RI/HHRA/ERA) identified potential human health risks associated with metals in soil. However, the highest concentrations of all compounds were detected in soil at Site 5; therefore, the identified risks would be biased high as applied to Site 6 soil. To achieve closure of Site 6, the SJCA Partnering Team agreed to conduct a complete removal of waste and soil action for Site 6.

An Engineering Evaluation/Cost Analysis (EE/CA) was prepared in June 2002 in response to the potential risks with soil exposure. A removal action was completed in September 2002 and included excavation of remnants of the Small Arms Unit, as well as surrounding material posing a potential risk to human health and the environment. A Closeout Report documenting the closure of Site 6 was submitted in March 2003. The no further action (NFA) Proposed Remedial Action Plan (PRAP) and Record of Decision (ROD) were submitted in 2003 and the ROD was signed in September 2003.

Site 7 consisted of a previously fenced, outdoor grassy area used to store a variety of material including anchors, chain and equipment. The initial start date for the site is unknown. The site, however, was active when the RCRA Facility Assessment (RFA) was conducted in 1989. During previous site investigations, 5-gallon containers of hydraulic oil, lubricating oil, lead paint, and open drums of sandblast grit were observed. There was also evidence that oil had leaked or was drained onto the soil from some of the equipment being stored at the site.

The Initial Assessment Study (IAS) conducted at SJCA in 1981, revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 7, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that oil had leaked or been drained from one of the pieces of equipment stored at the site.  Open drums of sand blast grit were stored and observed to have spilled onto the ground surface.  The RFA recommended that sources of potentially hazardous wastes or constituent releases be addressed and that surface soil samples be collected in stained areas to determine the potential for a release.

Two soil samples were collected and during the Relative Risk Ranking (RRR) data collection study in 1996. Bis(2-ethylhexyl)phthalate and methylene chloride were detected in the samples. The RRR results were used to conduct a human health risk screening (HHRS) and ecological risk screening (ERS) as part of the Site Screening Assessment (SSA) in 2002. Based on the HHRS and ERS, the SJCA Partnering Team recommended no further action (NFA) for the site. Surface debris was removed in 2002 and the site was closed for NFA.  

Site 8 was located near the intersection of Cross Street and Mine Road, adjacent to, and north of, Building 212 and across the street from Building M-1. From the 1950s to mid-1960s, the site was used for disposal of rinse water from mobile insecticide and herbicide spray trucks. It is estimated that 675,000 gallons of rinse water were discharged directly to the ground and allowed to infiltrate into the soil.

The Initial Assessment Study (IAS) conducted at SJCA in 1981, revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 8, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted.

In 1983, a Preliminary Assessment (PA) was conducted and indicated that neither VOCs nor radiation was present in the air.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that the area was devoid of vegetation and recommended soil sampling.

During the Relative Risk Ranking (RRR) data collection study in 1996, surface soil and groundwater samples were collected and analyzed for pesticides and PCBs. Pesticides detected in one or more soil samples include DDT, DDD, DDE, and endrin. No pesticides or PCBs were detected in groundwater.

The RRR results were used to conduct a human health risk screening (HHRS) and ecological risk screening (ERS) as part of the Site Screening Assessment (SSA) in 2002. No risks were found to exist. However, concerns remained regarding the historical record of 675,000 gallons of pesticide rinse water discharged to the ground remained and the site is recommended for further study.

A Site Investigation (SI) was conducted at Site 8 in 2003. The investigation consisted of the installation of direct-push probes for the collection of grab groundwater samples to determine the presence or absence of pesticides using analytical field test kits. Based on the test kit results and previous RRR results, four shallow monitoring wells were installed and groundwater samples were collected. Based on the HHRS, no unacceptable risks to humans exposed to constituents in soil at Site 8 were identified and the ERS results suggested a minimal potential for adverse effects to aquatic life from the presence of pesticides in groundwater. Therefore, no further action (NFA) was recommended for Site 8. The SJCA Partnering Team reached consensus for NFA at Site 8 in May 2004.

Several activities were conducted at Building 249 including, pest control, oil/water separation, and a washrack.  The washrack was located at the east end of Building 249 and was a single concrete wash pad which was divided into two separate stalls. One stall was rebuilt in approximately 1981 and the other was constructed in 1986. Each stall measured approximately 15 feet by 40 feet and was surrounding by 6 inch to 8 inch concrete berms. One stall was used to remove grease and the other was used to rinse non-greasy items. The unit was located outdoors and was not covered.

 

The Initial Assessment Study (IAS) conducted at SJCA in 1981 identified that from the mid-1960s to 1976, the wash pad was used for cleaning pesticides and herbicides out of mobile spray tanks. Wastes managed at Site 9 also included solvent wastewater from rinsing various types of equipment. Prior to 1976, the wash pad waste discharged toward the southern end of the wash pad and into a storm drain which discharged to a swampy area that discharged to St. Juliens Creek. In 1976, the discharge stream was redirected to a sanitary sewer. Oily sludge was observed on the soil beyond the secondary containment of the pad.

During the IAS, Building 249 was used for storing a variety of unused equipment and pesticides, but was mostly empty. Three 55-gallon drums and one bag of pesticides were being stored in the building during the IAS. The drums and bags contained pesticides including Malathion, Exxon XD 3-30, Ortho VOKK 70, and diazinon. The IAS revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 9, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted.

In 1983, a Preliminary Assessment (PA) was conducted and indicated that neither VOCs nor radiation was present in the air.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that the discharge from the area was being directed to an oil/water separator located adjacent to the wash pad. The separator was a subgrade, concrete, open-top tank with a metal grating cover. Rinsate and washdown material from the wash pad were collected in the separator. The RFA states that SJCA personnel reportedly pumped sludge on a periodic basis from the bottom of the separator into a vacuum truck. The sludge was transported offsite for final disposal. Excess water was directed to a POTW conduit via a level control outlet. It is not known when the oil/water separator was installed. No evidence of release from the separator was noted. The building was being used as a repair and maintenance shop for vehicles at the facility. Building 249 contained heavy equipment, vehicles needing repair, tools, and operational areas (e.g., solvent baths) normally found in automotive garages. The RFA recommended management practices to control waste runoff. 

Site 9 was remediated during a removal action conducted as part of the Shore Intermediate Maintenance Activity (SIMA) facility construction (Building 1556). Site 9 was closed for no further action (NFA), as documented in the Federal Facilities Agreement (FFA).

Site 10 was located in the vicinity of Building 13 and was a reported disposal location for wastes generated during hardware cleaning operations from pre-1940 to the mid-1970s. Wastes handled at this location included Alodine (a caustic detergent), methyl ethyl ketone, and acetone. It was also reported that liquid wastes were poured on the railroad tracks, though no evidence of a release has been observed. The railroad track is currently inactive.

The SJCA Partnering Team determined that SWMU 31 (the swale beneath Building 13) should be addressed as part of Site 10.

The Initial Assessment Study (IAS) conducted at SJCA in 1981, revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 10, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that Building 13 was a well-maintained machine shop and no evidence of release was observed.  However, soil sampling was recommended to determine if hazardous constituents had been released.  SWMU 31 was identified in the RFA as a swale that ran under Building 13 and eventually drained into St. Juliens Creek. Rinsate generated from the washing of smokeless powder cans that were washed in Buildings 13 and 47 was emptied into the swale. During the RFA, neither the swale area nor any evidence of contamination such as staining or stressed vegetation were found. Facility representatives indicated that they did not know of a swale in this area.

During the Relative Risk Ranking (RRR) data collection study in 1996, surface soil and groundwater samples were collected. In addition to a variety of metals, polycyclic aromatic hydrocarbons (PAHs) and methylene chloride were detected in the soil; however concentrations were below the quantitation limit of the analytical instruments. The groundwater contained low levels of trichloroethene.

During meetings/site visits conducted in November 1999 and February 2000, it was observed that the former swale located between Buildings 13 and 199/278 (Sites 10 and 17, respectively) was paved. The former swale would have traversed Site 17 and Site 2, currently under the Remedial Investigation (RI) process. Historical photographs show that this area has been paved since 1949.

Site 10 was included in the Site Screening Assessment (SSA) conducted in 2002. Human health and ecological risk screenings were conducted using the RRR data and it was determined that groundwater and surface soil at Site 10 do not pose a concern to human health and do not warrant further evaluation. The SJCA Partnering Team reached consensus during a site visit in July 2001 that Site 10 required no further action (NFA).   

Site 11 was located at Building 53 (formerly referred to as Building 266), which was the facility electrical shop located in the industrial area east of Cradock Street. Station electricians reportedly used 5 gallons of trichloroethene per month at the site. Most of the solvent evaporated, but the remainder was disposed on the railroad track bed adjacent to Building 53.

 

The Initial Assessment Study (IAS) conducted at SJCA in 1981, revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 11, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that the building had been converted to a recreation room and no evidence of waste disposal around the building was found. The RFA recommended that soil samples be collected from the area to determine if hazardous constituents were released.

During the Relative Risk Ranking (RRR) data collection study in 1996, surface soil and groundwater samples were collected. Surface soil contained DDT, DDE, dieldrin, endrin, and aroclor-1260. Several polycyclic aromatic hydrocarbons (PAHs) were detected at concentrations below the instrument quantitation limit. Methylene chloride and trichloroethene were both detected (below the quantitation limit) at a concentration of approximately 6 ppb. The groundwater sample contained several metals and volatile organic compounds (VOCs), including 1,2-dichloroethene (total) (100 ppb), methylene chloride (11 ppb), and trichloroethene (46 ppb).

The RRR data was used to conduct human health and ecological risk screens as part of the Site Screening Assessment (SSA) in 2002.  No surface soil human health risks were found for one of the two soil samples. Groundwater VOC results, however, were above the Maximum Contaminant Levels (MCLs). No additional ecological evaluation was recommended in the SSA. Due to its proximity to Site 21 where trichloroethene was also detected in a site groundwater sample, VOCs in Site 11 groundwater will be addressed under further investigation of groundwater at Site 21. Consensus for no further action (NFA) was reached by the SJCA Partnering Team during the July 2001 site visit.

Site 12 was located at Building 323 where sand blasting operations were conducted. It is not known when sand blasting operations began at Site 12. Wastes at the site consisted of waste blast grit and particulates removed from the items being blasted (e.g., paint, metal).

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that the building consisted of bare floors and a metal shed which was covered, divided into two stalls, and open at two ends. No release controls were in place at the unit, although there was a roof and several walls to help confine particulate waste as it was generated. It was stated that additional barriers were being planned for installation in the future to prevent particulate waste grit from escaping the building. Sand blast waste was observed on the ground surrounding Building 323 and it was recommended that it be assessed to determine if there were hazardous constituents associated with the material.

Site 12 was remediated during a removal action conducted as part of the Shore Intermediate Maintanence Activity (SIMA) facility construction. Consensus for no further action (NFA) for Site 12 was reached by the SJCA Partnering Team based on the removal action.

Site 13 was a fenced concrete pad used to store waste liquids (e.g., battery acid, lacquer thinner, antifreeze, and lube oils) prior to being sent to the waste accumulation area. The pad measured approximately 20 feet by 20 feet and was surrounded by a 6-foot high chain-link fence. Entrance into the area was controlled by a locked gate. The concrete pad was surrounded by sand bags forming a berm. It is not known when waste storage operations began at Site 13.

Site 14 was a washrack reportedly located at Building 266. The area was remediated during a removal action conducted as part of the Shore Intermediate Maintanence Activity (SIMA) facility construction (Building 1556). Consensus for no further action (NFA) for Site 14 was reached by the SJCA Partnering Team.

 

Site 15 is the fire training area located at Building 271. Site 15 consists of two adjacent celled areas which are used to train personnel to fight fires. One of the celled areas consists of a burning site where wooden pallets are soaked with diesel, ignited, and extinguished with water. The other burning site is a buried stainless steel pit measuring approximately 4-feet wide by 4-feet long by 3-feet deep. The pit was filled with diesel fuel which is ignited and extinguished using carbon dioxide. It is not known when waste storage operations began at Site 15.  Wastes managed at this site include wooden pallets and diesel fuel.

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that no controls structures, other than the stainless steel pit, were in place to control releases to the environment. During the RFA, blackened and stained soil was observed and ashes from the burning of the pallets were piled along the fence-line behind the fire training area. The soil where the diesel fuel was stored also was found to be stained. The RFA recommended that soil samples be collected from the area to determine if hazardous constituents were released and management practices be considered.

Site 15 will be investigated under the Navy's Underground Storage Tank (UST) program. Therefore, consensus for no further action (NFA) for Site 15 was reached by the SJCA Partnering Team.

Site 16 consists of the area surrounding Buildings 400, 168, and 173 and is a clearing house for any items excessed by the government.  Wastes handled include scrap metal, old boats and vehicles, obsolete equipment, and excess hardware items. 

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that Waste, including scrap stainless steel, was observed at the site. Localized oily stains were observed on several bare soil areas where machinery and equipment were stored.  The RFA recommended that soil samples be collected from the area to determine if hazardous constituents were released and that potential releases be addressed.

During the Relative Risk Ranking (RRR) data collection study in 1996, surface soil and groundwater samples were collected. In addition to several metals, the following organic contaminants were detected in soil: DDD, DDT, alpha chlordane, aroclor-1254, dieldrin, endrin, endrin aldehyde, gamma chlordane, di-n-butylphthalate, di-n-octylphthalate, bis(2-ethylhexyl)phthalate, and several PAHs. Groundwater samples from the site contained acetone and methylene chloride.

Consensus for no further action (NFA) at Site 16 was reached by the SJCA Partnering Team since the DRMO is managed under RCRA.

Site 17 is located within the industrial area of the Base, east of Cradock Street, and consists of a concrete storage pad located just outside Building 279. The storage pad was used to store two 55-gallon drums of PD-860, a commercial product used as a degreaser.

Site 18 is located adjacent to the south wall of Building 47 and consisted of small amounts of black blasting grit on the ground surface. 

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, indicated that the source of the blasting grit could not be determined. Although Building 47 housed two sand blasting booths, personnel working in that building reported that they do not use black blasting grit in their machines. Therefore, the source of the material identified as grit during the RFA site visit is unknown. An air compressor was also identified at Building 47. The RFA recommended that soil samples be collected from the area to determine if hazardous constituents were released.

During the Relative Risk Ranking (RRR) data collection study in 1996, a surface soil sample was collected.  Inorganics as well as several SVOCs (mostly PAHs), and two VOCs (methylene chloride and trichloroethene, both at a concentration of approximately 4 ppb) were detected.

The RRR data was used to conduct a human health and ecological risk screening as part of the Site Screening Assessment (SSA) in 2002. No human health risk was identified and no further ecological evaluation was recommended. In addition, during the July 2001 SJCA Partnering Team site visit, no blast grit was observed in several hand auger borings. Consensus for no further action (NFA) was reached by the SJCA Partnering Team during the site visit.

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Site 19—Building 190

Former Building 190 was located just south of the mouth of Blows Creek at the confluence of the Southern Branch of the Elizabeth River. Building 190 handled loose ordnance materials and was heavily used for loading explosives into ammunition. From the 1940s to the 1970s, Explosive D and Composition A-3 reportedly were used at Building 190. In mid-1977 all ordnance-handling buildings were decontaminated by flushing with chemical solutions and water. Building 190 was demolished sometime after 2000 and the site is now a grass-covered field. 

A Site Screening Assessment (SSA) was completed at Site 19 in 2002 and concluded that potential human health risks identified in soil and groundwater should be further evaluated. Additionally, concerns were identified regarding the two concrete drainage culverts leading from the former Building 190 towards the Southern Branch of the Elizabeth River.

Based on the results of the SSA, a Site Investigation (SI) was completed at Site 19 in 2004 and recommended further investigation of potential human health risks from polycyclic aromatic hydrocarbons (PAHs) and inorganics in soil. The Supplemental SI identified the Elevated Subsurface PAHs Area and Metallic Slag Area as areas of concern and the horizontal and vertical extent of each area was delineated. A soil removal of the two isolated hot spots indicating human health risks from inorganics (The Metallic Slag Area) and PAHs (The Elevated Subsurface PAHs Area) was recommended.

 

An Engineering Evaluation/Cost Analysis (EE/CA) was conducted to identify and analyze removal actions to mitigate potential risk. The selected non-time-critical removal action (NTCRA) involved excavation, disposal characterization, and disposal of soil. The volume of soil estimated to be removed was 360 cubic yards (CY). The NTCRA at Site 19 was completed in May 2006. The Metallic Slag Area was excavated to a depth of 1.5 feet and the Elevated Subsurface PAHs Area was excavated to a depth of 4 feet.

The Construction Closeout Report, completed in July 2006, summarizes the removal actions. Based upon the removal of soil at Site 19, which mitigated the potential risks to human receptors, the SJCA Partnering Team reached consensus for closure of Site 19. The Site Closeout Report was submitted to document no further action (NFA) closure of Site 19.

 

Site 20 is located adjacent to the former wharf in the Southern Branch of the Elizabeth River where ordnance had been reportedly dropped during loading and unloading operations.

The Initial Assessment Study (IAS) conducted at SJCA in 1981, indicated that Explosive Ordnance Disposal (EOD) Team divers identified some metal and thick silt deposits in the area of the old pier.  The IAS revealed that low-level concentrations of ordnance materials exist throughout the facility. However, the sites identified, which included Site 20, were determined not to pose a threat to human health and the environment, and no confirmation study was conducted. 

The RCRA Facility Assessment (RFA) conducted at SJCA in 1989, recommended that the facility implement a program to determine if residual ordnance exists and remedial cleanup, if necessary.

During the Relative Risk Ranking (RRR) data collection study in 1996, an underwater reconnaissance and a magnetometer survey, in which EOD divers searched the sediments, were performed in that area. The magnetometer survey identified approximately 68 buried "contacts" surrounding the former wharf pilings. Many individual "contacts" were identified in random locations between the pilings. The most significant concentration of "contacts" was along the center west side of the pilings, between the pilings and the river bank. No visual confirmation of "contacts" was made during the RRR data collection study. It is important to note that "contacts" might indicate any type of buried metal object, and does not necessarily indicate the presence of buried ordnance. Four sediment samples were collected and one explosive, 1,2-dinitrobenzene, was detected in one sediment sample. Metals, one pesticide, several PAHs, bis(2-ethylhexyl)phthalate, and one VOC (methylene chloride), were detected in sediment.

The RRR data was used to conduct human health and ecological risk screens as part of the Site Screening Assessment (SSA) in 2002. Site 20 sediment was not found to pose a potential concern to human health. The ecological risk screening (ERS) concluded the potential for adverse effects to benthic organisms is likely minimal and does not warrant further evaluation. However, due to the potential for buried ordnance, signs were posted at Site 20 to prohibit intrusive activities. Additionally, the Navy placed a warning notice for potential unexploded ordnance (UXO) at Site 20 in Navy Real Estate Documents and The US Army Corps of Engineers were notified of the potential for UXO at Site 20.

During the July 2001 site visit, the SJCA Partnering Team reached consensus for no further action (NFA). The site will be managed under the Munitions Response Program (MRP). 

EPIC AOC 1 is located in the northernmost area of SJCA, near the intersection of E Street and Marsh Road. AOC 1 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. In the EPIC study interpretation of the 1937 aerial photograph, this AOC was identified as a possible waste disposal area. Ground scarring, both north and south of Marsh Road, was apparent in the photograph. The area north of Marsh Road was approximately 200 feet by 150 feet, and the area south of Marsh Road was approximately 125 feet by 80 feet. By 1949, the date of the subsequent EPIC photograph, the area had been developed and Buildings 182 and 181 were constructed north of and over part of the scarring. The observation of marine shell fragments in the soil during a site visit in November 1999 indicated that the area had possibly been filled with dredge material.

An electromagnetic (EM) geophysical survey and surface soil and subsurface soil sample collection were conducted in 2001 as part of the Site Screening Assessment (SSA). Seven of the eight anomalies observed during the EM geophysical survey were attributed to utilities or other underground features. Inorganics, three pesticides (DDD, DDE, and DDT), 19 SVOCs (including 17 PAHs) , and one VOC (methylene chloride) were detected in surface soil samples. Five pesticides, one PCB (aroclor-1260), 17 SVOCs (mostly PAHs), and two VOCs (acetone and methylene chloride) were measured in subsurface soil samples.

The results of the investigation were used to conduct a human health risk screening (HHRS) and ecological risk screening (ERS). Based on the HHRS, the SSA recommended further evaluation of surface soil. Additional consideration for ecological impacts to Blows Creek from PAHs was also recommended. The SJCA Partnering Team considered the site for NFA but decided that additional desktop review of the site was necessary. 

A Site Investigation (SI) of AOC 1 was conducted in August 2003 and included surface soil sampling.  Based on the HHRS, no unacceptable risks to humans exposed to constituents in soil at AOC 1 were identified. The ERS results suggested very little potential for PAHs originating from AOC 1 to be transported to Blows Creek. Therefore, no further action (NFA) was recommended for AOC 1. The SJCA Partnering Team reached consensus for NFA in May 2004. 

EPIC AOC 2 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. A review of a 1974 EPIC photograph showed storage of materials, possibly ordnance, in rows approximately 150 feet long in the fenced area immediately adjacent to the pier. Storage of items in this manner was not evident in photographs after 1976. In 1977, all SJCA ordnance operations/processes were moved to the Naval Weapons Station Yorktown. Additionally, releases have not been reported for this EPIC AOC. Since EPIC AOC 2 was identified in June 1999 through a review of historical aerial photographs, no sampling has been conducted.

The site was further evaluated in November 1999, during a work-in-progress meeting that was held and a site visit that was conducted by the SJCA Partnering Team. Based on a review of current and past conditions and the location of EPIC AOC 2, it was determined that sampling was not warranted.

Based upon available information and a July 2001 site visit, it was the consensus of the SJCA Partnering Team that EPIC AOC 2 does not pose a threat to human health or the environment and requires no further action (NFA).

EPIC AOC 3 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. Ground scarring was identified east of Building M-5 on the April 1949 aerial photograph. The area of scarring was roughly circular and approximately 70 feet in diameter.

The site was further evaluated in November 1999, during a site visit that was conducted by the SJCA Partnering Team. Upon review of current and past conditions and location of this EPIC AOC through additional evaluation of aerial photographs, it was confirmed that the ground scarring was fill material. Review of subsequent aerial photographs indicated that the SJCA facility was extended into this area east of Building M-5. This was evident in the 1937 photograph, which showed an extension of the facility to the east of Building M-5. It was concluded that sampling was not warranted for this site.

Based upon the available information and a July 2001 site visit, it was the consensus of the SJCA Partnering Team that EPIC AOC 3 does not pose a threat to human health or the environment and requires no further action (NFA).

EPIC AOC 4 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. Soil staining and possible storage tanks were identified in a parking area located south of Building M-1 during the EPIC Study in a May 1958 aerial photograph.

The site was further evaluated in November 1999, during a site visit by the SJCA Partnering Team and it was concluded that sampling was not warranted.  Based upon the available information and a July 2001 site visit, EPIC AOC 4 was determined not to pose a threat to human health or the environment and no further action (NFA) was required.

EPIC AOC 5 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. Areas of possible dark staining between Buildings 87 and 88 (located in the central part of the industrial area of the Annex) were identified in a 1964 photograph.

The site was further evaluated in November 1999, during a site visit by the SJCA Partnering Team. Areas of standing water were observed and grading of the area did not achieve proper drainage. Based on additional review of aerial photographs and evaluation of past and present site conditions, the areas appeared to be ponded water. Therefore, sampling was not warranted.

During a July 2001 site visit, the area was mixed grass and gravel, no standing water was observed, and there were no indications of current or historical contamination in the area. Based upon the available information and site visit, it was the consensus of the SJCA Partnering Team that EPIC AOC 5 does not pose a risk to human health or the environments and no further action (NFA) was required.

EPIC AOC 6 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. This site, located to the west of Cradock Street across from Site 2, was identified as a possible ground scarring and waste disposal area from a 1964 aerial photograph. A review of a March 1963 photograph showed no activity at this location. However, aerial photographs from May 1970 and onwards, showed the presence of a high voltage transmission tower in the disturbed area shown in the 1964 photograph.

The site was further evaluated in November 1999, during a site visit that was conducted by the SJCA Partnering Team. Based on additional review of aerial photographs and evaluation of past and present site conditions, it was determined that sampling was not warranted.  Based upon the available information and a July 2001 site visit, consensus was reached that EPIC AOC 6 does not pose a threat to human health or the environment and no further action (NFA) was required.

EPIC AOC 7 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. This area is located just off of Victory Avenue and outside the main gate of SJCA in the City of Portsmouth outgrant area. It was identified during the EPIC Study from a 1974 aerial photograph as a storage area. In a 1985 photograph, rows of mounded material were observed. This material was thought to be truckloads of soil staged for filling of the area. By 1986, there was evidence of scarring and ground disturbance as well as mounded material, indicating that filling activities had begun.

The site was further evaluated in November 1999, during a site visit that was conducted by the SJCA Partnering Team. Upon further review of aerial photographs and evaluation of current and past site conditions, it was determined that sampling was not warranted. Based upon the available information and a July 2001 site visit, consensus was reached that EPIC AOC 7 does not pose a threat to human health or the environment and no further action (NFA) was required.

EPIC AOC 8 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. This site is located northeast of and adjacent to Building 176. EPIC AOC 8 was identified in the EPIC study interpretation of the 1974 aerial photograph as a possible bulk storage area or waste disposal area. The area is flat and currently is covered with grass. It is approximately 300 feet long by 60 feet wide. No activity has been identified at this location in either earlier or later photographs.

In November 1999, a site visit was conducted by the SJCA Partnering Team. Through a review of current and past conditions and the location of this EPIC AOC, it was determined that sampling was warranted.

Accordingly, surface soil and subsurface soil samples were collected and an electromagnetic (EM) survey was conducted to delineate the site boundary, locate possible waste such as buried drums and metallic debris, and characterize the soil profile above the water table. Three anomalies were identified during the survey. One anomaly appeared to be caused by above-ground features (existing fence and metal structures) and two anomalies were due to small buried man-made objects.

The sampling results were used during the Site Screening Assessment (SSA) in 2002 to conduct a human health and ecological risk screening. No human health concerns were found for exposure to surface soil and subsurface soil and no further evaluation of ecological effects was recommended. Based upon the available information and a July 2001 site visit, consensus was reached for no further action (NFA).

EPIC AOC 9 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. Aerial photography from February 1976 showed ground scarring under the steam line next to the railroad tracks. This area is relatively small, approximately 40 feet by 40 feet, and is located about 75 feet southwest of Building 75. This EPIC AOC was also identified in previous 1970s and early 1980s photographs.

 

The site was further evaluated in November 1999, during a site visit that was conducted by the SJCA Partnering Team. Upon further review of aerial photographs and evaluation of current and past site conditions, the "ground scarring" appeared to be due to steam from the overhead steam lines. It was determined that sampling was not warranted.

Based upon the available information and a July 2001 site visit, EPIC AOC 9 was not considered to pose a risk to human health and the environment and consensus for no further action (NFA) was reached.

EPIC AOC 10 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. This area was identified as "ground scarring" from a June 1986 aerial photograph. It is located in the area of the Wharf, south of the east corner of Building M-5. Photographs from 1974 indicated that this area was the former location of Buildings 244, 245, and 256. The scarring was probably the result of demolition of these buildings between 1974 and 1986.

 

The site was further evaluated in November 1999, during a site visit by the SJCA Partnering Team. Upon further review of aerial photographs and evaluation of current and past site conditions, it was determined that sampling was not warranted. Based upon the available information and a site visit in July 2001, EPIC AOC 10 was not considered to pose a risk to human health and the environment and consensus for no further action (NFA) was reached.

 

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EPIC AOC 11 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. From 1985 and 1986 aerial photographs, this area was identified as an area of open storage of drums and material at Building 55 between the railroad tracks and the road. There is no evidence of storage in this area in previous or subsequent photographs.

 

The site was further evaluated in November 1999, during a site visit conducted by the SJCA Partnering Team. Upon further review of aerial photographs and evaluation of current and past site conditions, it was determined that sampling was not warranted .

In July 2001, a site visit was conducted and the SJCA Partnering Team reached consensus that EPIC AOC 11 does not pose a risk to human health and the environment. Review of aerial photographs from before 1985 and after 1986 showed no evidence of this area being used to store drums and other materials. Therefore, no further action (NFA) was required at the site.

EPIC AOC 12 was identified for investigation during a review of historical aerial photographs (EPIC Study) of the facility in June 1999. This site is located north of Buildings M-1 and M-5, directly adjacent to Blows Creek. It is a sandy, flat area next to the railroad tracks and it is approximately 240 feet long by 70 feet wide. In a 1937 aerial photograph, the area appeared as a marsh. By 1949, the area was devoid of vegetation. In the 1961 and 1964 photographs, a dark mounded material was noted in the area. None of the photographs showed storage or waste disposal activities. The area is still non-vegetated with sandy soil at the surface.

The site was further evaluated in November 1999, during a site visit conducted by the SJCA Partnering Team. During the site visit, marine shell fragments were observed in the soil, which indicates that the area had been filled during development of the area. Due to the lack of vegetation in the area for extended periods of time, this EPIC AOC was proposed for additional investigation in 2001.

In 2001, surface soil and subsurface soil samples were collected and an electromagnetic (EM) survey was conducted to delineate the site boundary, locate possible waste such as buried drums and metallic debris, and characterize the soil profile above the water table. Four anomalies were identified during the survey.  One anomoly was probably due to partially buried concrete blocks, two anomolies were most likely caused by buried man-made objects, and one anomaly appeared to be due to the adjacent railroad tracks.

The analytical data was used to conduct human health and ecological risk screenings as part of the Site Screening Assessment (SSA) in 2002. The human health risk screening (HHRS) concluded that contact with EPIC AOC 12 surface and subsurface soil was not expected to be a concern. In addition, no significant potential ecological effects were identified. Therefore, the SJCA Partnering Team reached consensus for no further action (NFA) at EPIC AOC 12.

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AOC 13 was identified during a December 2001 interview with former employees. AOC 13 is located in an open bay of Building M-3. Two pentachlorophenol (PCP) dip tanks were located on the western wall of the open bay and were reportedly in operation for approximately two years (1951-1953) during the Korean War. Conveyor belts extended through the bay wall into the tanks. No known releases have occurred at this site.

During site visits conducted in 2001 and 2002 by the Tier I SJCA Partnering Team, no evidence of staining on the concrete floor or other signs of releases were observed. However, based upon a lack of information on the location of drying operations, the Tier I SJCA Partnering Team decided that the site warranted investigation. No previous investigations have been conducted at AOC 13.

Surface and subsurface soil samples were collected during a Site Screening Assessment (SSA) in August 2003. No unacceptable human health or ecological risks were identified, therefore, consensus for no further action (NFA) was reached by the SJCA Partnering Team in May 2004.

AOC 14 is located at the former Building 89 location. Building 89 was used for loading projectiles, including 8-inch and 16-inch shells with Explosive D compounds (a mixture of organic nitrated compounds and combustible materials such as hydrocarbons and aluminum powder). The building was demolished sometime after 1999. A review of the available maps did not indicate that drainage lines were present in the building. No known releases are associated with this site and no contaminant releases were identified during demolition activities. The site currently consists of a grass-covered field. The SJCA Partnering Team decided to investigate AOC 14 to determine the absence or presence of contamination. No previous investigations have been conducted.

Soil samples were collected during a Site Screening Assessment (SSA) in August 2003. No unacceptable human health risks were identified.  Although the ecological risk screening (ERS) concluded that there may be the potential for chemicals in onsite surface soils to be transported to the Southern Branch of the Elizabeth River, it is unlikely chemicals originating from AOC 14 would reach the River. Therefore, consensus for no further action (NFA) was reached by the SJCA Partnering Team in May 2004.

AOC D consists of 35 storm water outfalls identified at SJCA. None of the outfalls are connected to sanitary sewers. The outfalls are listed as an AOC based on past releases from waste management areas located near storm water drains, lines and outfall structures. The storm water outfalls will be investigated under CERCLA on a site-specific basis. Site-specific investigations may include sampling various outfalls to determine whether there has been a release of hazardous constituents.

 

 

AOC E is located at Building 104 and is used to temporarily store generators, pumps, and heavy equipment. The RCRA Facility Assessment (RFA) conducted in 1989, noted that lubricating oil had leaked from one of the pumps onto the bare ground. The leaking pump was removed and placed on the concrete foundation of Building 104.

AOC E was remediated during a removal action conducted as part of the Shore Intermediate Maintanence Activity (SIMA) facility construction and requires no further action (NFA).

AOC F consists of nine underground storage tanks (USTs). The tanks are constructed from steel, concrete, and fiberglass, and are located at Buildings 113, 201 (two tanks), 263, 266, 271, and 283 (three tanks). The capacity of the tanks ranges from 250 to 8,000 gallons. The tanks are approximately 25 to 45 years old. 

 

According to the RCRA Facility Assessment (RFA) conducted in 1989, several tanks were reportedly out of service but still in place; others were being used for storage of refined fuels (diesel and gasoline). However, AOC F requires no further action (NFA) as the USTs are managed under the Navy’s UST Program.

 

AOC G consists of former process buildings located throughout SJCA. The former process buildings include structures where various processes and operations were performed; some of which were suspected to have generated hazardous constituents. Some of the structures included under AOC G no longer exist and some structures still exist but are no longer conducting process operations. A comprehensive list of existing and non-existing former process buildings is not available. It is also not known whether buildings were cleaned or decontaminated prior to being torn down or the type of waste management practices that were implemented at the buildings.

 

The SJCA Partnering Team reached consensus for no further action (NFA) under CERCLA, however, as new information becomes available on the locations and processes conducted at former process buildings, the SJCA Partnering Team will determine if new AOCs should be added. Any former process buildings identified for further evaluation will be evaluated on a site-specific basis.

 

AOC J consists of former areas used for manufacturing ammunition. Buildings in which ammunition is believed to have been handled include Buildings 12, 13, 14, 18, 29 (which has been torn down, and was formerly adjacent to the east end of M-2), 32, 32A, 33 (these three buildings were located between Buildings 17, 38, and 39), 39, 41, 43, 46, 47, 89, 180, 184, 185, 188, 190, 193, 222 (Victory Building located between Site 5 and Blows Creek), 240 through 246, 256, 267, M-3, M-4, M-5, and M-5 Annex. According to the Initial Assessment Study (IAS), different sizes and types of ammunition were loaded with black powder, smokeless powders, Explosive D, trinitrotoluene (TNT), Composition A-3, and tetryl in these areas since 1898. It is not known whether these areas were cleaned or decontaminated prior to being decommissioned as ammunition manufacturing areas. 

The SJCA Partnering Team reached consensus for no further action (NFA) under CERCLA, however, as new information becomes available on the manufacturing areas, the SJCA Partnering Team will determine if new AOCs should be added. Any former ammunition manufacturing areas identified for further evaluation will be evaluated on a site-specific basis.

AOC K consists of a former sewage treatment plant (STP). The plant was initially identified in the 1981 Initial Assessment Study (IAS) as a small STP located proximal to Building 318. The plant operated from 1942 to 1947 and the waste handled at this unit reportedly consisted of treated wastewater from the onsite barracks. An inspection of the site where the plant was reportedly located did not reveal any evidence of its existence.

The SJCA Partnering Team determined that AOC K warranted further investigation based upon the potential for mercury contamination from trickling filters that may have been part of the STP process. No previous investigations have been conducted at AOC K.

Surface and subsurface soil samples were collected during a Site Screening Assessment (SSA) in August 2003. No unacceptable human health or ecological risks were identified, therefore, consensus for no further action (NFA) was reached by the SJCA Partnering Team in May 2004.

SWMU 10 was located in Building 154Y as a greater-than-90-day waste storage bunker. Building 154Y consists of a concrete bunker covered with soil on all sides except the entrance.

According to the 1989 RCRA Facility Assessment (RFA), the floor of the bunker was treated with a waterproof epoxy coating and air vents extend through the roof of the bunker. The bunker began operating as a waste storage area in August 1981. Wastes managed included both characteristic (e.g., D001, D002, and D003) and listed hazardous waste (e.g., F001, F002, F003, and F005). At the time of the RFA, the bunker was operating under an interim status and a drainage ditch extended across the front of the bunker.

During a RCRA Compliance Evaluation Inspection conducted in June 1986, the majority of drums at the SWMU were either badly corroded or bulging. The contents of some of the drums had leaked on or were spilled on the ground. In addition, inspection reports indicated the drums inside the unit were in unsatisfactory condition during April and May 1987 inspections. However, during the RFA in 1989, no evidence of a release was observed either inside or outside the unit. SWMU 10 was managed under RCRA, therefore, no further action (NFA) was recommended.

SWMU 11 is located in Building 163Y and is a greater than 90 day waste storage bunker. SWMU 11 consists of a concrete bunker covered with soil on all sides except the entrance.

According to the RCRA Facility Assessment (RFA) in 1989, the floor of the bunker was treated with a waterproof epoxy coating and was sloped to drain into troughs. Air vents extend through the roof of the bunker. The front of the bunker previously had a railroad spur extending to the entrance of the unit. At the time of the RFA, a drainage ditch extended across the front of the bunker. The bunker began operating as a waste storage area in August 1981. Wastes managed at SWMU 11 include listed hazardous waste and large quantities of unknown waste. Polychlorinated biphenyls (PCBs), mercuric nitrate, and trichloroethene are known to have been stored at this unit. Designated areas within the interior of the bunker were used for storing alkali, acid, flammable, and other regulated material waste types. Twelve drums, all located on wooden pallets, were observed inside the building.  Absorbent material emitting an organic odor was observed outside the bunker entrance in 1989; however, no staining was observed on soil surrounding the unit. SWMU 11 is managed under RCRA, therefore, requires no further action (NFA).

SWMU 12 is a warehouse located in Building 198. Warehousing operations at Building 198 began in March 1976. The warehouse stored Kepone until the fall of 1978. During the RCRA Facility Assessment (RFA) in 1989, the building was storing PCB transformers and PCB oil. At the time of the RFA, this fully enclosed, locked building contained four 55-gallon barrels and three transformers situated on wooden pallets. The floor of the building is concrete treated with epoxy and no environmental releases were evident. SWMU 12 is regulated under the Toxic Substance Control Act (TSCA) and requires no further action (NFA).

 

SWMU 18 is located south of Building 154Y and consists of an asphalt pad measuring approximately 100 by 400 feet. The area is used to store scrap metal and various types of metal equipment. Two old metal tanks with holding capacities of more than 1,000 gallons were observed during the 1989 RCRA Facility Assessment (RFA). The source of the tanks is not known but it appeared that they could have been boilers removed from a ship. It is not known when waste storage operations began at this unit. No releases were evident during the RFA.

This SWMU was determined to require no further action (NFA) due to the low potential for releases to surrounding environmental media.

SWMU 19 is located adjacent to Site 15 located at Building 271. This SWMU consisted of a fenced concrete pad which appeared to be the foundation of a building previously located at the site.  The RCRA Facility Assessment (RFA) identified the area to measure approximately 40 feet by 500 feet. The pad is partially surrounded by a concrete berm less than 6 inches high. In the center of the pad is a small metal building measuring approximately 20 feet by 40 feet. The area was used to store scrap metal, obsolete equipment, and piping. It is not known when waste storage operations began at this unit. No releases were evident during the RFA.  The RFA recommended site management practices be implemented at this SWMU. The SJCA Partnering Team site visit in November 2002 did not identify concerns with the storage yard and a consensus for no further action (NFA) was reached. 

 

SWMU 21 is located east of Building 47 and consists of a concrete pad measuring approximately 20 feet by 40 feet. The pad is surrounded by a concrete berm less than 6 inches high and sand bags. The area is enclosed by a 8-foot high chain-link fence and a locking gate. It is not known when this SWMU began operating.  The RCRA Facility Assessment (RFA) conducted in 1989, stated that SWMU 21 received waste from Site 14. Waste stored at this SWMU include old batteries, waste lacquer thinner, lube, and oils. At the time of the RFA, there were approximately 13 batteries and two 55-gallon drums of waste lube oil located in the building. Waste material was stored at this SWMU before being transported to a RCRA interim status storage facility.

The RFA recommended no further action (NFA) for this SWMU. A SJCA Partnering Team site visit in November 2002 did not identify concerns with the SWMU and consensus for NFA was reached. The Navy submitted a closure notification letter to the Virginia Department of Environmental Quality (VDEQ) for SWMU 21.

SWMU 22 was a repair shop satellite area located northeast of Building 40. The SWMU is an outdoor concrete pad approximately 15 feet by 35 feet and is surrounded by sand bags on two sides and a concrete curb on the other two sides. The RCRA Facility Assessment (RFA) conducted in 1989 indicated that the pad was used in the past for the storage of hazardous waste for a period less than 90 days. According to the facility and the RFA, this SWMU began storing waste as early as 1985 and operated for approximately two years. In 1989 the unit was inactive and no waste was observed. Oily stains were noted on the concrete pad, but no soil staining was evident. The RFA recommended no further action (NFA) for this SWMU. A SJCA Partnering Team site visit in November 2002 did not identify concerns and consensus for no further action (NFA) was reached. The Navy submitted a closure notification letter to the Virginia Department of Environmental Quality (VDEQ) for SWMU 22.

 

SWMU 26 consisted of four open-topped railroad storage cars containing scrap metal. The cars were located on an active railroad spur near Building 176. It is not known when waste storage in the railroad cars began.  The RCRA Facility Assessment (RFA) conducted in 1989, reported that the types of waste included stainless steel scrap metal destined for Defense Reutilization and Marketing Office (DRMO). No environmental releases from this unit were evident.  SWMU 26 is managed under RCRA and therefore, requires no further action (NFA).

SWMU 29 consists of dumpsters located throughout the SJCA facility. Certain dumpsters have closed tops. The RCRA Facility Assessment (RFA) conducted in 1989, reported that each dumpster is emptied on a regular schedule by a contractor for offsite disposal. According to the RFA, wastes handled in these dumpsters include burnable waste (e.g., refuse), salvageable waste (e.g., metal), non-burnable, non-salvageable waste (e.g., sand), and asbestos waste. No release to the environment were observed during the 1989 RCRA Facility Investigation (RFI) other than the dumpster identified at IR Site 7 (formerly SWMU 17). SWMU 29 is managed under RCRA and therefore, no further action (NFA) is required.

SWMU 32 consists of overland drainage ditches located throughout the SJCA facility. A series of overland drainage ditches were used to transport process wastewater and runoff from process areas to receiving waters. The 1989 RCRA Facility Assessment (RFA) indicated that process waste was collected and managed at waste generation points and was no longer transported via the ditches. Ditches in the vicinity of Site 4 were inspected during the 1989 RFA and there was no evidence of waste transport in these ditches and no evidence of environmental releases.

SWMU 32 was determined to require no further action (NFA). Drainage ditches associated with individual sites, AOCs, or SWMUs will be investigated on a site-specific basis. Site-specific investigations will identify the exact boundaries of the drainage ditch and samples will be collected at all locations where there is either visible evidence of release or suspicion that past releases may have occurred.

SWMU 33 consists of the underground sewer drainage system used for both sanitary sewage and storm water runoff. The 1989 RCRA Facility Assessment (RFA) indicated that past waste management practices were to wash unspecified waste into floor drains. Ultimately, this waste would enter either the sanitary or storm water sewer system. Waste was generated from fuze drill-out operations, ammunition breakdown operations, steam-out operations, degreasing operations, and boiler plant operations.

 

During the RFA, it was noted that the oil/water separator (Site 9), which collects rinsate from the wash pad at Building 249 (also part of Site 9), is tied to the sanitary sewer. It was also noted that unspecified spilled liquids in operational areas may enter the drain system.

 

This SWMU requires no further action (NFA). The sewer drainage system associated with individual sites, AOCs, or SWMUs will be investigated on a site-specific basis. Site-specific investigations will include evaluating the integrity of the subsurface system and may include soil sampling to determine if hazardous constituents have been released.

 

SWMU 34 consists of various waste accumulation areas located throughout SJCA. The areas are located in enclosed buildings with concrete floors. According to the 1989 RCRA Facility Assessment (RFA), a typical operational waste accumulation area is a "two-day" storage area located within a portion of the building designated as the waste accumulation area and identified as a painted floor area. Typical waste accumulation areas contained a single, closed, 55-gallon drum and a closed, 5-gallon can.

 

The waste managed at each unit is specific to the operation being conducted in each building. Wastes are expected to include various waste oils and solvents. No environmental releases were observed during the RFA.

SWMU 34 is managed under RCRA, therefore no further action (NFA) is required.