Environmental

East Vieques

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Description of East Vieques Sites

The former Vieques Naval Training Range (VNTR), which comprises approximately 14,573 acres, was used for ground warfare and amphibious training for Marines, naval gunfire support training, and air to ground training. On April 30, 2003, the former VNTR was transferred to the Department of the Interior (DOI) to be operated and managed by the United States Fish and Wildlife Service (USFWS) as a National Wildlife Refuge pursuant to Section 1049 of the National Defense Authorization Act for Fiscal Year 2002 (Public Law 107–107). Approximately 900 acres of the former VNTR, consisting of the LIA, is managed as a wilderness area where public access is prohibited in accordance with Public Law 106–398 and Public Law 107–107.

The former VNTR was divided into four separate operational areas, comprising from west to east: the Eastern Maneuver Area (EMA), the Surface Impact Area (SIA), the Live Impact Area (LIA), and the Eastern Conservation Area (ECA). Following cessation of military operations on the VNTR, the Navy subdivided the former operational areas into smaller parcels based on considerations such as historic use, geographic features, and land use. The parcels, referred to as UXO sites, were delineated in such a way to make them more manageable for the purposes of prioritization, munitions removal, site characterization, and decision making.

There is a total of 56 sites on East Vieques, which includes 20 munitions response sites and 36 environmental sites (Figures 1 and 2). While investigations continue in the 18 munitions response sites, two sites (PAOC FF and PI 14) are completed with a no action decision document. Investigations are complete at 34 of the environmental sites with no further action required; environmental investigations continue at SWMU 1 and SWMU 20. All public documents related to each site can be found in the Administrative Record. A description of these sites is provided below, along with their respective CERCLA site closure document, if applicable.

East Vieques Environmental and Munitions Response Sites
Figure 1. East Vieques Environmental and Munitions Response Sites


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East Vieques Environmental and Munitions Response Sites Detail
Figure 2. East Vieques Environmental and Munitions Response Sites Detail


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Munitions Response

Site

Name

Description

UXO 1

Eastern Conservation Area

UXO 1 comprises 133 acres at the easternmost tip of Vieques, adjacent to the Live Impact Area (LIA). UXO 1 was established as a conservation area in 1983. Although UXO 1 was not reportedly used for munitions operations, the site is located adjacent to the LIA (UXOs 2, 3, and 4) where naval gunfire and air-to-ground training activities occurred from the 1970s through 2003. The Proposed Remedial Action Plan (PRAP) was finalized in June 2014 and the Record of Decision was signed on November 4, 2015. The Final Remedial Action Work Plan was issued in November 2016, and remedial action fieldwork began in 2018.

UXO 2

Live Impact Area (LIA) Beaches

The LIA comprises the 965-acre area established in 1965 for live-fire training such as ship-to-shore, air-to-ground, and land-based artillery training. UXO 2 consists of 15 restricted-access beaches, totaling approximately 71 acres. The site is currently in the RI phase.

UXO 3

Live Impact Area (LIA) Roads

The LIA comprises the 965-acre area established in 1965 for live-fire training such as ship-to-shore, air-to-ground, and land-based artillery training. UXO 3 consists of approximately 39 acres of restricted-access roadways. The site is currently in the RI phase.

UXO 4

Live Impact Area (LIA) Interior

The LIA comprises the 965-acre area established in 1965 for live-fire training such as ship-to-shore, air-to-ground, and land-based artillery training. UXO 4 makes up approximately 855 acres of the LIA and includes all of the LIA except for the LIA beaches (UXO 2) and roads (UXO 3). An interim action is currently being implemented within UXO 4 to address the high density of very dangerous and sensitive submunitions present within the submunitions area. The site is currently in the RI phase, which will continue after the interim action.

UXO 5

Surface Impact Area (SIA) Restricted Roads

The SIA comprises the 2,500-acre area established in the 1950s when Marine artillery targets were constructed for Marine artillery fire from the Surface Impact Area (SIA) and Eastern Maneuver Area (EMA). During 1969, additional targets were established for inert bombing and strafing runs. UXO 5 consists of approximately 38 acres of restricted-use roadways. The site is currently in the RI phase.

UXO 6

Eastern Maneuver Area (EMA)/Surface Impact Area (SIA) Public Roads

The SIA comprises the 2,500-acre area established in the 1950s when Marine artillery targets were constructed for Marine artillery fire from the Surface Impact Area (SIA) and Eastern Maneuver Area (EMA). During 1969, additional targets were established for inert bombing and strafing runs. The EMA comprises the 11,000-acre area established in 1947 to provide military maneuvering areas and ranges for amphibious landings, small arms fire, artillery and tank fire, shore fire control, and combat engineering training. UXO 6 consists of approximately 62 acres of roadways through the SIA and EMA. Portions of these roads are anticipated to have public access in the future. The site is currently in the RI phase.

UXO 7

Eastern Maneuver Area (EMA)/Surface Impact Area (SIA) North Beaches

The SIA comprises the 2,500-acre area established in the 1950s when Marine artillery targets were constructed for Marine artillery fire from the Surface Impact Area (SIA) and Eastern Maneuver Area (EMA). During 1969, additional targets were established for inert bombing and strafing runs. The EMA comprises the 11,000-acre area established in 1947 to provide military maneuvering areas and ranges for amphibious landings, small arms fire, artillery and tank fire, shore fire control, and combat engineering training. UXO 7 consists of 14 beaches, totaling approximately 54 acres. Portions of these beaches are anticipated to have public land use in the future. The site is currently in the RI phase.

UXO 8

Surface Impact Area (SIA) South Beaches

The SIA comprises the 2,500-acre area established in the 1950s when Marine artillery targets were constructed for Marine artillery fire from the Surface Impact Area (SIA) and Eastern Maneuver Area (EMA). During 1969, additional targets were established for inert bombing and strafing runs. UXO 8 consists of nine beaches, totaling approximately 45 acres. Portions of these beaches are anticipated to have public land use in the future. The site is currently in the RI phase.

UXO 9

Surface Impact Area (SIA) Exterior

The SIA comprises the 2,500-acre area established in the 1950s when Marine artillery targets were constructed for Marine artillery fire from the Surface Impact Area (SIA) and Eastern Maneuver Area (EMA). During 1969, additional targets were established for inert bombing and strafing runs. UXO 9 makes up approximately 953 acres of the SIA, including the northern, southern, and eastern portions of the SIA and excluding the roads (UXOs 5 and 6), beaches (UXOs 7 and 8), and interior (UXO 10). An interim action is currently ongoing to address munitions. Once complete, the site will continue in the RI phase.

UXO 10

Surface Impact Area (SIA) Interior

The SIA comprises the 2,500-acre area established in the 1950s when Marine artillery targets were constructed for Marine artillery fire from the Surface Impact Area (SIA) and Eastern Maneuver Area (EMA). During 1969, additional targets were established for inert bombing and strafing runs. UXO 10 makes up the western 890 acres of the SIA. An interim action is currently ongoing to address munitions. Once complete, the site will continue in the RI phase.

UXO 11

Eastern Maneuver Area (EMA) Public Roads

The EMA comprises the 11,000-acre area established in 1947 to provide military maneuvering areas and ranges for amphibious landings, small arms fire, artillery and tank fire, shore fire control, and combat engineering training. UXO 11 consists of approximately 86 acres of roadways through the EMA. Portions of these roads are anticipated to have public access in the future. The site is currently in the RI phase.

UXO 12

Eastern Maneuver Area (EMA) Interior

The EMA comprises the 11,000-acre area established in 1947 to provide military maneuvering areas and ranges for amphibious landings, small arms fire, artillery and tank fire, shore fire control, and combat engineering training. UXO 12 makes up approximately 4,465 acres of the interior of the EMA and excludes all former ranges except one former range used by tanks, 106 recoilless rifles, artillery, and 50-caliber machine guns. The site is currently in the RI and FS phase.

UXO 13

Eastern Maneuver Area (EMA) West

The EMA comprises the 11,000-acre area established in 1947 to provide military maneuvering areas and ranges for amphibious landings, small arms fire, artillery and tank fire, shore fire control, and combat engineering training. UXO 13 makes up approximately 1,871 acres in the northwest corner of the EMA and includes 11 former ranges and 5 former artillery gun positions. These ranges were used variously for small arms, combat rifle, hand grenade, M-79 grenade, rifle grenade, flame thrower, 3.5-inch rocket, pistol, shape charge, and M-60 machine gun training. The site is currently in the RI phase.

UXO 14

Eastern Maneuver Area (EMA) South

The EMA comprises the 11,000-acre area established in 1947 to provide military maneuvering areas and ranges for amphibious landings, small arms fire, artillery and tank fire, shore fire control, and combat engineering training. UXO 14 makes up approximately 1,050 acres in the southern portion of the EMA and includes one former range and two-gun positions that were used for training using M-1 and M-14 rifles, M-2 carbines, Browning Automatic rifles, service pistols, and 45-caliber machine guns. Portions of this site are anticipated to have public access in the future. The site is currently in the RI and FS phase.

UXO 15

Puerto Ferro

UXO 15 is located in the southwestern corner of the former Vieques Naval Training Range (VNTR) and comprises two areas identified through aerial photograph analysis as potentially used for military activities. One area may have been used for munitions storage and disposal. The other area may have been used as a rocket firing point toward the Surface Impact Area (SIA) and Live Impact Area (LIA). An interim action allowed for public access to the area around the historic lighthouse and adjacent beach. An interim action was implemented in 2018 to remove encrusted munitions located immediately offshore and within the terrestrial portion in the northeastern area of the site, designated as PI-9 East. The site is currently in the RI and FS phase.

UXO 16

Underwater Areas

UXO 16 comprises approximately 11,500 acres in the waters surrounding the former VNTR and NASD where the Navy historically conducted operations. These offshore areas are locations where potential munitions may have impacted areas extending from the terrestrial ranges, artillery gun positions, air-to-ground bombing, and naval gunfire, where munitions were identified offshore of Cayo La Chiva, and also all offshore areas to a depth of 10 feet surrounding the former VNTR. An interim action was completed in 2018 to remove the munitions offshore of Cayo La Chiva; the site is currently in the RI phase.

UXO 17

Other Sites

UXO 17 consists of four sites located in the southwestern portion of the former Vieques Naval Training Range (VNTR) – two potential former munitions storage/disposal areas (PAOC EE and PI 14) and two potential former gun positions (PI 21 and PAOC FF). No known historical live fire occurred at PAOC EE, but the 128-acre area was used for amphibious landings and other ship-to-shore activities. The site is currently in the RI and FS phase. PI 14 and PAOC FF were completed with no further action required. PI 21 was completed with no action required (descriptions of these sites can be found under “Completed Sites – Munitions Response”).

UXO 18

Cayo La Chiva

UXO 18 (Cayo la Chiva) is the 12-acre island just offshore from Blue Beach (Playa de la Chiva), located in the former Eastern Maneuver Area (EMA). A simulated gun nest was located on Cayo La Chiva during Operation Portex. No additional training activities are documented to have occurred at UXO 18; however, fired 5-inch rockets were identified both on and offshore. Public use is intended for this area. A PRAP was issued in 2016 and the ROD was issued in August 2018. Remedial action field activities are currently being conducted.

 

Environmental

Site

Name

Description

Solid Waste Management Unit (SWMU) 1

Former Camp Garcia Landfill

SWMU 1 was the former Camp Garcia landfill, operated from approximately 1954 to 1978 in an area covering approximately 41 acres east of Camp Garcia, and used for the disposal of municipal-type waste such as paper, corrugated containers, cans and food packaging material, rags, wood, scrap metal, and yard waste. During that time, approximately 1,800 to 3,120 tons of waste was disposed in the landfill; no hazardous materials were reportedly placed in this disposal area. During operation, materials were disposed in trenches, which were then covered with about 6 inches of soil to control blowing of litter. A final 2-ft thick soil cover, consisting of compacted native soils, was placed over the trenches. Currently, the landfill is densely vegetated. The site is currently in the long-term monitoring phase to inspect the landfill vegetative cover and land use controls and groundwater monitoring to determine if a future release from the landfill occurs that results in groundwater contamination that may necessitate a groundwater remedy.

The Proposed Plan was issued for public comment in July 2011 and the associated ROD was issued in September 2011. The work plan to guide implementation of the remedial action, operation and maintenance (O&M), land use controls (LUC), and long-term monitoring (LTM) was submitted in July 2012.

A ROD Explanation of Significant Differences (ESD) was issued in October 2016. As jointly determined by the Navy and regulatory agencies, removal of surface debris across the landfill was preferable to covering the debris. This action, and a revised risk assessment considering both surface and subsurface soil, demonstrated that there are no unacceptable risks remaining, thereby obviating the need for additional soil cover in order to meet the objectives set forth in the remedy selected for the 2011 ROD. None of the other aspects of the 2011 ROD were changed by this ESD. Because of the remedy modification outlined in the ROD ESD, a Revised O&M, LUC, and LTM Work Plan was finalized in November 2016.

Post-ROD inspections and LTM sampling have been completed annually since January 2016. In addition, post-hurricane inspections and associated repairs were conducted following Hurricane Maria in late 2017. LTM Status Reporting commenced in January 2017.

Solid Waste Management Unit (SWMU) 20

Former Helicopter Maintenance Area, Trenched Area, Disturbed Area, and Bermed Area used for Fuel Bladder Storage

SWMU 20, formerly designated photo-identified site 4 (PI 4), was the location of former helicopter maintenance area, barracks, mess hall, and associated facilities. There are no buildings remaining at the site; however, several concrete foundation slabs and concrete sumps with associated piping have been observed. Shallow groundwater contamination covers an area of about 18 acres that migrates south-southeast toward Bahia Tapon. The site is currently in the FS phase to evaluate remedial alternatives. However, the site is currently being investigated for Per- and Polyfluoroalkyl Substances (PFAS) prior to completion of the FS.

 

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Munitions Response

Site

Name

Description

Relevant Documents

Potential Area of Concern (PAOC) FF (Part of UXO 17)

Possible Former Artillery Gun Area

PAOC FF is the former location of a possible artillery gun. The location was identified during an interview conducted as part of the Environmental Baseline Survey (EBS). However, review of historical aerial photographs indicated the area was not used as a gun position. In fact, the aerial photographs show the only observable feature in the area to be a drainage ditch. Further, the site’s position at the end of the former runway would not have been a reasonable location for a gun placement due to the takeoff and landing of aircraft. Therefore, the site was included in a No Action Decision Document issued in 2010.

Site Closure Document

Photo Identified Site (PI) 14 (Part of UXO 17)

Possible Miscellaneous Debris Disposal Area

PI 14 is a possible debris area just south of the eastern end of the former runway south of Camp Garcia. A site visit during the 2009 Site Inspection (SI) identified several debris items, but no evidence of contaminant releases or buried debris. The debris items observed were subsequently removed. Based on this, the site was included in a No Action Decision Document issued in 2010.

Site Closure Document

PI 21 (Part of UXO 17)

Possible Location of a Former Artillery Firing Position

PI 21 is a closed site within UXO 17 and is the possible location of a former artillery firing position, but review of historical records and multiple site visits identified no evidence of this use. In fact, observations made during the site visits suggest the site was used as rock quarry. Specialized aerial photography identified a vertical tank, pits, disturbed ground, and pits containing discolored liquid. Pits containing discolored liquid were subsequently determined to be just low-lying areas where surface water collected and algae formed. Therefore, the site was included in a No Action Decision Document issued in 2014.

Site Closure Document

 

Environmental

Site

Name

Description

Relevant Documents

Solid Waste Management Unit (SWMU) 2

Former Fuels Off-loading Site

SWMU 2 is the former location of above-ground storage tanks that stored diesel fuel, unleaded gasoline, aviation gas, and JP-5 jet fuel; the area where fuels were off-loaded from barges; and the area through which an 8-inch fuel line transferred the fuel from the off-loading area to the tanks. These tanks became operational in 1953 and were removed in 1978 and 1979. Because of the historical use of the site, a Phase I RCRA Facility Investigation (RFI) and Expanded Site Inspection (ESI) were conducted in 2004 and 2009, respectively, to determine if there had been a fuel-related release at the site.

Evaluation of data collected during these investigations indicated there had not been a contaminant release at SWMU 2 or, if a release occurred, it has not resulted in soil or groundwater contamination that posed unacceptable risks to human health or the environment. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Solid Waste Management Unit (SWMU) 4

Former Waste Areas of Building 303 (Camp Garcia)

The SWMU 4 former waste areas were located at Building 303 within the Camp Garcia compound area and comprised a spent battery accumulation area, a catch basin for hydraulic oil, a cleaning/degreasing basin, and a storage area for waste rags, absorbent material, and grease. Because of the historical use of the site, a Phase I Environmental Assessment, Phase I RCRA Facility Investigation (RFI), and Expanded Site Inspection (ESI) were conducted in 2000, 2004, and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release at SWMU 4 or, if a release occurred, it has not resulted in soil or groundwater contamination that posed unacceptable risks to human health or the environment. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Solid Waste Management Unit (SWMU) 5

Former Spent Battery Accumulation Area at OP-1

SWMU 5 is a former spent battery accumulation area located at Observation Post 1 (OP-1) in the former Surface Impact Area (SIA). The batteries and battery acid were stored outside on a gravel driveway and the acid from the batteries typically was emptied into plastic containers and shipped to the former Naval Station Roosevelt Roads. Although there was no evidence of releases observed during various site visits, no secondary containment was present during part of the operational period of the SWMU, which lasted until 2003. Therefore, a Phase I RCRA Facility Investigation (RFI) was conducted in 2004 to determine if there had been contaminant releases at the site. Evaluation of data collected during this investigation indicated there had not been a contaminant release at SWMU 5 or, if a release occurred, it has not resulted in soil contamination that posed unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Solid Waste Management Units (SWMUs) 6 and 7

Former Waste Oil and Paint Accumulation Areas (Camp Garcia)

SWMUs 6 and 7 are the former waste oil and paint accumulation areas adjacent to former Building 303 at Camp Garcia). Historical information suggests the co-located sites, consisting of a concrete pad, were used to store waste oil and paint from approximately 1978 until at least 1995. Because of the historical use of the site, a Phase I Environmental Assessment and Expanded Site Inspection (ESI) were conducted in 2000 and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Solid Waste Management Unit (SWMU) 8

Former Waste Oil Accumulation Area at OP-1

SWMU 8 is a former waste oil accumulation area located at Observation Post 1 (OP-1) in the former Surface Impact Area (SIA). Between approximately 1978 and 2003, waste oil and lubricants were temporarily stored in drums prior to shipment to the former Naval Station Roosevelt Roads. Because of this historical use of the site and staining observed during a site visit, a Phase I RCRA Facility Investigation (RFI) was conducted in 2004 to determine if there had been contaminant releases at the site. Evaluation of data collected during this investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Solid Waste Management Unit (SWMU) 10

Former Sewage Treatment Lagoons

SWMU 10 is located approximately ½ mile southeast of former Camp Garcia. These domestic sewage treatment lagoons went into service in the early 1950s and consisted of four unlined lagoons. Historically, the raw wastewater discharge to the lagoons originated from the Camp Garcia area. In 1974, after the level of activity and associated domestic wastewater generation rate significantly decreased at Camp Garcia, the treatment lagoons were lined to create a no-discharge system.

Because of the historical use of the site, a Phase I Environmental Assessment, Phase I RCRA Facility Investigation (RFI), and Expanded Site Inspection (ESI) were conducted in 2000, 2004, and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Solid Waste Management Unit (SWMU) 12

Former Solid Waste Collection Unit Area

SWMU 12 is a former solid waste collection unit area on the access road to Observation Post 1 (OP-1) in the former Surface Impact Area (SIA). Containers used to store solid wastes collected at the site included wooden boxes, wooden trailers, metal dumpsters, and metal cans. The solid waste collection area served as a solid waste storage and transfer area, prior to pickup of the solid waste for disposal at the Vieques Municipal Landfill. Because of this historical use of the site, a Phase I RCRA Facility Investigation (RFI) was conducted in 2004 to determine if there had been contaminant releases at the site. Evaluation of data collected during this investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Area of Concern (AOC) A

Former Diesel Fuel Fill Pipe Area

AOC A is the location of a former 15,000-gallon diesel underground storage tank (UST) and associated fuel fill pipe at Observation Post 1 (OP-1) in the former Surface Impact Area (SIA). The UST and fuel fill pipe entered service in approximately 1978 and were removed, along with some surrounding soil, in 1997. A new UST was installed in 1997 but was removed in 2003 in response to the closure of the Vieques Naval Training Range (VNTR) and transfer the property to the Department of the Interior (DOI). Based on historical data associated with the UST removals in 1997 and 2003, additional soil excavation and sampling were conducted during an Expanded Site Inspection (ESI) in 2009. Evaluation of the data collected in 2009 determined the average concentrations of diesel-related contamination in soil were below the Puerto Rico Land Pollution Control Corrective Action Level. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Area of Concern (AOC) F

Former Rock Quarry

AOC F is a former rock quarry just southeast of Camp Garcia. This rock quarry was used by the Navy to obtain gravel for roads and other construction projects. However, during a 1995 site visit, used tires and some paper waste were visible at this location. Therefore, a Phase I Environmental Assessment was conducted in 2000 to determine if there had been contaminant releases at the site; it was noted during the investigation that the tires and paper waste had been removed. In addition, rock samples to be used for road repair were collected in 2007. Evaluation of data collected during these investigations indicated there had not been a contaminant release at AOC F. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Area of Concern (AOC) G

Pump Station and Chlorination Building at Sewage Lagoons

AOC G is the former pump station and chlorination building adjacent to the former sewage treatment lagoons (SWMU 10). The site consists of a building that housed a pump station and chlorination equipment used in the past for the chlorination of the lagoon system effluent. These facilities were placed into operation in the 1950s,but taken out of service in the mid-1970s. Because of this historical use of the site, a Phase I RCRA Facility Investigation (RFI) and Expanded Site Inspection (ESI) were conducted in 2004 and 2009, respectively, to determine if there had been contaminant releases at the site.

Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) I

Former Power Plant and Mechanics Shop

PAOC I is a former power plant and mechanics shop (Bldg. 401) at Camp Garcia. Neither site visits conducted in 2001, 2002, 2007, and 2009 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage or disposal at the site. However, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site. Evaluation of data collected during this investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) J

Former Vehicle Maintenance Area

PAOC J is a former vehicle maintenance area at Camp Garcia immediately north of the main road (all structures were demolished prior to 1980). Neither site visits conducted in 2002 and 2006 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) and Expanded Site Inspection (ESI) were conducted in 2006 and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) K

Former Wash Rack

PAOC K is a former wash rack area at Camp Garcia north of main road (structure demolished prior to 1980). Neither site visits conducted in 2002 and 2006 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) and Expanded Site Inspection (ESI) were conducted in 2006 and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) L

Former Paint and Transformer Storage Area

PAOC L is a small (11 ft x 13 ft) former paint and transformer storage building at Camp Garcia. While there was no observable evidence of a release during historical site visits, a Site Inspection (SI) was performed due to past storage of paints and transformers. Because elevated levels of pesticides potentially associated with the storage of chemicals in the building were detected just outside the building, soil around the building potentially impacted by pesticide releases was removed and confirmatory soil and groundwater samples collected during the 2009 Expanded Site Inspection (ESI).

Evaluation of the confirmatory data demonstrated the pesticide concentrations potentially attributable to a release had been removed and that the residual concentrations were consistent with the concentrations attributable to normal pesticide use. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) M

Former Fuel Facility

PAOC M is a former Camp Garcia dispatch office, fuel facility, and sleeping quarters. The facility was constructed in 1986 and demolished in 1991. Neither site visits conducted in 2002 and 2009 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site; the data gathered indicated there had not been a contaminant release. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) N

Former Fuel Farm and Filling Station

PAOC N is a former fuel farm and filling station at Camp Garcia. The fuel farm and filling station were constructed in 1985 and demolished 1992. Neither site visits conducted in 2002 and 2009 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) O

Former Boiler Room in Heat Plant Building 238

PAOC O is a former boiler room in Camp Garcia heat plant Building 238, which was constructed in 1953 and demolished in 1989. Neither site visits conducted in 2002 and 2009 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or a leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) P

Former Water Treatment Pumphouse

PAOC P is a former water treatment facility pump house in Camp Garcia Building 500, which was constructed in 1953 and demolished in 1989. Neither site visits conducted in 2002 and 2009 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or a leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) Q/R

Former Boiler Rooms in Heat Plant Buildings 607 and 617

PAOC Q is a former boiler house in Camp Garcia heat plant Building 607, which was constructed in 1963 and demolished in 1984. PAOC R is a former boiler house in Camp Garcia heat plant Building 617, which was constructed in 1970 and demolished 1984. Although no evidence of hazardous waste, hazardous material, petroleum, or munitions storage or disposal was identified during site visits or historical records evaluation, a Site Inspection (SI) and Supplemental SI were conducted in 2009 and 2010, respectively, to determine if there had been contaminant releases at the sites. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or a leaching concern for groundwater. Therefore, the sites were included in a No Action/No Further Action Decision Document issued in 2011.

Site Closure Document

Potential Area of Concern (PAOC) S

Former POL Pipeline and Power Plant

PAOC S includes the location of a former above-ground petroleum, oil, and lubricant (POL) pipeline that ran from the aboveground fuel tanks at the Former Fuels Off-loading Site (SWMU 2) to an area south of Camp Garcia where there was a valve used to fill fuel trucks. PAOC S also includes a former Camp Garcia power plant that had no direct relationship to the POL pipeline. Neither site visits conducted in 2002 and 2009 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site. However, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. In addition, a geophysical survey found no evidence of a buried pipeline or underground storage tank (UST) at the former power plant. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Potential Area of Concern (PAOC) T

Former Public Works Grounds Contractor Storage Shed and Mechanics Shop

PAOC T is a former public works grounds contractor storage shed at Camp Garcia. The building (Building 305) was constructed in 1975 and demolished in 1991. Neither site visits conducted in 2002 and 2006 nor records evaluation found evidence of hazardous waste, hazardous material, petroleum, or munitions storage, disposal, or releases at the site.

However, a Site Inspection (SI) was conducted in 2006 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Potential Area of Concern (PAOC) U

Former Vehicle Maintenance Area

PAOC U is a former vehicle maintenance area just north of former Building 303 at Camp Garcia. Historic storage of hazardous waste, hazardous material, and petroleum products occurred at PAOC U and some minor staining was observed on the ground during a site visit. Based on this, a Site Inspection (SI) was conducted in 2006 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil or groundwater contamination that poses unacceptable risks to human health or the environment. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Potential Area of Concern (PAOC) V

Former Leaking Transformer Storage Area

PAOC V is the former storage area for a leaking transformer at Camp Garcia. Based on observations made in 2002 that the transformer was leaking, soil samples were collected to characterize the site and the transformer was subsequently removed. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. In addition, the contaminant source was removed. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Potential Area of Concern (PAOC) W

Former Area of Stagnant, Discolored Water

PAOC W is a former area of pooled, discolored water adjacent to the bridge across the southern end of Laguna La Chiva. Site visits found no evidence of hazardous waste, hazardous material, petroleum, or munitions storage or disposal. In addition, the Mangrove Forest Health and Status Report (2002) determined that the discolored water was likely due to increased organic matter caused by the road crossing the lagoon cutting off normal water circulation with the sea. Based on this information, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Potential Area of Concern (PAOC) X

Former Debris Area in Ephemeral Stream

PAOC X is the former location of debris within and adjacent to an ephemeral stream located north of the main road into the Vieques National Wildlife Refuge and west of Camp Garcia. PAOC X formerly contained an automobile body, tires, scrap metal, and construction-related solid waste and debris. Based on this information, the site was investigated during the Environmental Baseline Survey (EBS) and Site Inspection (SI) in 2002 and 2009, respectively, to determine if there had been contaminant releases at the site. In addition, the debris in and adjacent to the ephemeral stream was removed during the SI. Evaluation of the data collected during the EBS and SI indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. In addition, the contaminant source was removed. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Photo Identified Site (PI) 5

Former Airfield and Associated Ditches

PI 5 is a surface water drainage from the former runway area south of Camp Garcia. Interviews and records indicate the site was historically the location of the fire department and temporary tents. Beach matting was also observed in the area in the past. No evidence of munitions, hazardous waste, hazardous material, or petroleum storage or disposal was identified at the site and evaluation of aerial photographs indicated the site comprised ditches from the airfield that led to Puerto Ferro. Based on this, a Site Inspection (SI) was conducted in 2009 to determine if there had been contaminant releases at the site and transported via the drainage ditches. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or a leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Photo Identified Site (PI) 6

Former PCB Storage Pad and Vehicle Wash Pad

PI 6 was a probable water treatment plant with a large fresh water impoundment, vehicle wash pad, and concrete pad potentially used to store PCBs. Additionally, PI 6 was historically a bivouac area for the 65th Infantry Division of the U.S. Marine Corps during training exercises. Based on this information, sampling was conducted during the Environmental Baseline Survey (EBS) and Site Inspection (SI) in 2002 and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Photo Identified Site (PI) 7

Former Quarry, Tar Drum Disposal Area, and Radar Communication Area

PI 7 is located approximately ¼ mile west of Camp Garcia. The central portion of PI 7 was a rock quarry, and the northern portion was a radar communications facility. At the south end of the site, drums containing asphalt were observed. Two drums were also observed in the former quarry. Based on these observations, a Site Inspection (SI) and Expanded Site Inspection (ESI) were conducted in 2006 and 2009, respectively, to determine if there had been contaminant releases at the site. During the ESI, 174 tar-stained drums, as well as associated tar-stained soil, were excavated and removed from the site. Evaluation of data collected during these investigations indicated existing soil and groundwater constituent concentrations (including those collected after the drums and stained soil were removed) do not pose unacceptable risks to human health or the environment. In addition, the potential sources of contamination were removed. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2011.

Site Closure Document

Photo Identified Site (PI) 8

Former Motor Pool Maintenance Area

PI 8 is located south of the main road into the Vieques National Wildlife Refuge. The site was a motor pool maintenance area, car wash with water production well, oil drum storage and disposal area, drum storage area for asphalt emulsions, and potentially an area for storage of hazardous materials and petroleum products. Based on this information, sampling was conducted during the Environmental Baseline Survey (EBS) and Site Inspection (SI) in 2002 and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Photo Identified Site (PI) 10

Former Wastewater Leach Field

PI 10 is the location of possible former sewage-drying lagoons for a wastewater treatment plant. The site was inactive by 1964, and completely re-vegetated by 1994. Based on the observation of six impoundment possibly containing liquids in aerial photographs, sampling was conducted at the site during the Environmental Baseline Survey (EBS) and Site Inspection (SI) in 2002 and 2009, respectively, to determine if there had been contaminant releases at the site. Evaluation of data collected during these investigations indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

Site Closure Document

Photo Identified Site (PI) 11

Former Pump Station for Seawater and Sanitary Wastewater Outfall

PI 11 is a pump house used for the former wastewater treatment system and/or salt water supply system (pumped from a natural lagoon to Camp Garcia). During the Environmental Baseline Survey (EBS), a diesel engine in a vegetated area adjacent to the station and a stained area immediately under the outfall of an open pipe projecting from the side of the pump house was observed. Based on this, sampling was conducted at the site during the Environmental Baseline Survey (EBS) in 2002 to determine if there had been contaminant releases at the site. Evaluation of data collected during the investigation indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment or leaching concern for groundwater. Therefore, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

Photo Identified Site (PI) 20

Former Observation Point and Potential Quarry

PI 20 is a former observation point used during landing exercises, and potentially as a quarry in the past. Site visits performed in 2001 and 2007 identified no evidence of prior disposal activities or other contamination and noted the site had become a shallow lagoon. Based on this information, the site was included in a No Action Decision Document issued in 2009.

Site Closure Document

 

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