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Former Atlantic Fleet Weapons Training Area - Vieques

Environmental Restoration Program Public Website

Background

Vieques is located approximately 7 miles southeast of Puerto Rico’s main island and encompasses 33,000 acres, although most of the island’s approximately 9,000 residents live in or around two main towns—Isabel Segunda on the north shore and Esperanza on the south shore (Figure 1).


Figure 1: Regional Location Map

From the 1940s until 2003, the U.S. Navy administered lands on both the western and eastern ends of Vieques. The former Atlantic Fleet Weapons Training Area in Vieques, Puerto Rico, served as the Navy’s training range for ensuring combat readiness of U.S. Atlantic Fleet Forces and for North Atlantic Treaty Organization (NATO) operations. From the mid-1940s until 2003, more than 300,000 munitions were fired during military training operations. Live-fire training on Vieques ceased in 2001, although periodic training with concrete-filled bombs and blank bullets continued until 2003, when all Navy training ceased.

On April 30, 2001, 4,250 acres of the former Naval Ammunition Support Detachment (NASD) on the western side were transferred to the Municipality of Vieques (MOV), 3,050 acres to the U.S. Department of the Interior (DOI) to be managed as part of the Vieques National Wildlife Refuge by the United States Fish and Wildlife Service (USFWS), and 800 acres to the Puerto Rico Conservation Trust (PRCT, now known as "Para La Naturaleza"), as required by Public Laws 106-398 and 107-107 (Figure 2).

In 2003, the Navy transferred all 14,573 acres of the former Vieques Naval Training Range (VNTR) on the east side to DOI in accordance with Public Law 107-107, to be administered by USFWS as part of the Vieques National Wildlife Refuge. The law required the former Live Impact Area (LIA) on the east side to be managed as a wilderness area with no public access (Figure 3).

Because the Commonwealth of Puerto Rico considered Vieques the highest priority facility for cleanup, large portions of Vieques and the surrounding waters were placed on the National Priorities List (NPL) in 2005.

The Vieques National Wildlife Refuge houses a variety of natural resources, including sensitive habitats such as mangroves, subtropical dry forests, lagoons, and coral reefs, and endangered species such as sea turtles, manatees, and brown pelicans. Portions of the former installation are open or planned to be open to the public for recreation and for access to culturally significant areas.


Figure 2 - Former NASD (West) Vieques Sites


Figure 3 - Former VNTR (East) Vieques Sites


Figure 4 - East Vieques Site Detail

 

Vieques Environmental Restoration Program

The Vieques Environmental Restoration Program faces challenges such as unexploded ordnance across thousands of acres of land and seafloor, and abundant ecologically and culturally sensitive resources. To meet these challenges, the Vieques Environmental Restoration Program Team comprises representatives from the Naval Facilities Engineering Systems Command (NAVFAC) Atlantic, the Environmental Protection Agency (EPA), the Puerto Rico Department of Natural and Environmental Resources (PRDNER), National Oceanic and Atmospheric Administration (NOAA), National Marine Fisheries Service (NMFS), DOI, and USFWS. The 2007 Federal Facility Agreement (FFA) establishes the framework for the stakeholder agencies to collaboratively implement the Environmental Restoration Program under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and achieve the following objectives:

  • Implement prompt actions to protect human health, safety, and the environment

  • Manage and prioritize investigations and remedial actions, based on the risk to human health and the environment, anticipated land use, and available funding

  • Develop safe, cost-effective, and innovative cleanup approaches and technologies

  • Execute a community involvement program to promote public safety and stakeholder participation in the cleanup process

  • Maximize partnerships with federal, Commonwealth, and local authorities to accelerate achieving land use goals through interim actions and final decisions

The Vieques Environmental Restoration Program was presented with the 2016, 2018, and 2020 Secretary of the Navy and Secretary of Defense Environmental Award for Environmental Restoration, Individual/Team, and the 2022 Secretary of the Navy Environmental Award for Environmental Restoration, Individual/Team. The award recognizes the team for efforts to protect human health and the environment by cleaning up Department of Defense sites in a timely, cost-efficient, and responsive manner.

Additional information about the Vieques Environmental Restoration Program is contained in the current Site Management Plan (SMP) and previous SMPs for sites where work has been completed. The SMP is updated yearly and is available in its entirety in the Administrative Record with the most current SMP available at this link.

A brief description of the former NASD (west Vieques) and the former VNTR (east Vieques) sites can be found below, along with the current CERCLA status of each site.

Description of West Vieques Sites

The former NASD covers 8,200 acres on the west side of the island and was used to store munitions and other support facilities for Atlantic Fleet training. On April 30, 2001, the 8,114-acre former NASD was apportioned and transferred to DOI, MOV, and the PRCT in accordance with Public Laws 106-398 and 107-107. The property owned by DOI (approximately 3,158 acres) is managed by the USFWS as part of the Vieques National Wildlife Refuge. As noted previously, on February 11, 2005, Vieques was placed on the NPL, which required all subsequent environmental restoration activities to be conducted under CERCLA.

There are 17 terrestrial sites on west Vieques, comprising one munitions response site (Solid Waste Management Unit [SWMU] 4) and 16 environmental sites. A portion of the offshore munitions site (UXO 16) is also associated with west Vieques and is located immediately adjacent to SWMU 4 (Figure 2). To date, 15 of the 16 environmental sites have been completed with no further action required. The Record of Decision for the remaining environmental site (Area of Concern [AOC] E) has been finalized, the remedy has been implemented, and the site is currently under long-term monitoring to monitor groundwater contaminant decline to meet remedial goals. In addition, the Record of Decision for the one munitions response site (SWMU 4) has been finalized and remedy implementation is planned for 2022.

UXO 16 is the underwater site adjacent to munitions sites on the VNTR and the NASD. With respect to the NASD, the offshore, underwater area adjacent to SWMU 4 may have been impacted by munitions ”kick out” from the open burn/open detonation (OB/OD) activities. This offshore area has been investigated and the Proposed Remedial Action Plan is currently being evaluated by the regulatory agencies, with solicitation of public comments on the Proposed Remedial Action Plan anticipated in 2022.

A brief description of the sites that are currently in or have completed the CERCLA process is provided below, along with their key CERCLA document(s). All public documents related to these sites can be found in the Administrative Record.

 

Munitions Response
Site Name Description Relevant Documents

SWMU 4

Inactive Open Burn/Waste Explosive Detonation Range

SWMU 4, located at the western end of the former NASD (Figure 2), is a former OB/OD area used for the thermal destruction of retrograde and surplus munitions, fuels, and propellants from 1969 through 1979, and may have periodically been used as far back as the late 1940s. The OB/OD operations were conducted in 16 man-made earthen bermed pits of various shapes.

Based on information gathered during historical investigations beginning in 1984, a Remedial Investigation/Feasibility Study was performed between 2002 and 2009 to assess the nature and extent of munitions and associated contaminants at the site, determine risks to human and ecological (plants and animals) receptors based on anticipated land uses, and evaluate remedial alternatives to address explosive hazards (referred to as “munitions and explosives of concern” or MEC for short) potentially remaining at the site as well as unacceptable risks posed by contaminants identified in site media.

A Supplemental Remedial Investigation was performed in 2014 to refine the understanding of contaminant levels in lagoon fish and crab; the results showed no unacceptable risk for consumption of these organisms. A Feasibility Study Addendum was produced in 2017 to refine the remedial alternatives evaluated.

Based on findings and evaluations in the 2012 Remedial Investigation/Feasibility Study Report, 2017 Feasibility Study Addendum (which includes information from the Supplemental Remedial Investigation), and munitions removal actions performed in 2009/2019 and 2015, a Proposed Remedial Action Plan was issued for public comment in 2018 and a Record of Decision was signed by the Navy and regulatory agencies in 2019. Because past removal actions addressed MEC within all areas planned for public use, the selected remedy addresses potential MEC remaining at the site using land use controls and periodic monitoring. The remedy also includes land use controls and long-term monitoring to ensure groundwater at the site is not used as a potable source until perchlorate concentrations naturally attenuate to acceptable levels.

The Remedial Action Work Plan was issued in May 2022, and the remedial action is anticipated to be implemented in 2022.

SWMU 4 Remedial Investigation/Feasibility Study, May 2012

SWMU 4 Feasibility Study Addendum, April 2017

SWMU 4 Proposed Remedial Action Plan, July 2018

SWMU 4 Record of Decision (English), September 2019

SWMU 4 Record of Decision (Spanish), September 2019

SWMU 4 Remedial Action Work Plan, March 2022

UXO 16

Underwater Areas

The underwater areas adjacent to east Vieques (former VNTR) and west Vieques (former NASD) have a combined size of approximately 11,500 acres and are known or suspected to have been impacted by munitions. Because of the large size of UXO 16, the area is being subdivided into multiple, focus areas for investigation and cleanup.

Although the vast majority of UXO 16 lies adjacent to the former VNTR in east Vieques, a portion of the site occurs adjacent to the western end of Vieques, including three former anchorage areas, the area around Mosquito Pier, and the area just offshore of SWMU 4.

The anchorage areas and Mosquito Pier are areas where ordnance from Navy ships may have fallen into the water during loading and unloading operations. These areas are currently in the Remedial Investigation planning phase.

The offshore area adjacent to SWMU 4 (referred to as UXO 16.1 and shown in Figure 2) is an area where munitions and associated debris ejected by the OB/OD activities at SWMU 4 may have fallen. Based on this information, a Remedial Investigation was performed between 2012 and 2016 to characterize the nature and extent of MEC on and beneath the seafloor as well as potential contamination associated with these underwater munitions. Of the 63 munition-related items identified within UXO 16.1, only 4 MEC were found. Further, no explosive chemicals were detected in sediment samples collected and all inorganics concentrations were attributable to natural conditions (in other words, originating from the surrounding rock on land and underwater). Details of the Remedial Investigation findings, evaluations, conclusions, and recommendations can be found in the UXO 16.1 Remedial Investigation Report issued in 2018.

Although the information gathered during the Remedial Investigation indicates there are likely very few MEC present within UXO 16.1, remedial alternatives were evaluated in the 2022 Feasibility Study Report to address the potential for MEC to remain at the site in consideration of likely recreational use of the area.

Based on the findings and evaluations in the Remedial Investigation Report and Feasibility Study Report, a Proposed Remedial Action Plan that summarizes the various remedial alternatives evaluated for UXO 16.1 and describes the rationale for the recommended remedial alternative is currently under development and is anticipated to be issued for public comment in 2022.

UXO 16.1 Remedial Investigation Report, July 2018

UXO 16.1 Feasibility Study, February 2022


Environmental
Site Name Description Relevant Documents

AOC B

Former Wastewater Treatment Plant (WWTP)

AOC B was a former WWTP and discharge area located on southwest end of the Public Works Area (Figure 2). The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, AOC B was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

A Site Inspection for Per-and Polyfluoroalkyl Substances (PFAS) is currently underway at AOC B because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” in this table for additional detail).

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

AOC E

Former Underground Storage Tank Site at Building 2016

AOC E is located within the public works area (Figure 2) and was the site of a former 550-gallon underground storage tank (UST) used from 1970 to 1996 to store waste oil from vehicle maintenance activities.

Releases from the former UST and associated infrastructure resulted in petroleum-related contamination in groundwater within a relatively small area around the former UST, as documented in the 2008 AOC E Remedial Investigation Report.

Based on evaluation of potential remedial alternatives in the 2012 Focused Feasibility Study Report, a Proposed Remedial Action Plan was issued for public comment in 2013 and a Record of Decision was signed by the Navy and regulatory agencies in 2015. Because a past study at the site demonstrated in situ chemical oxidation (ISCO) was effective at addressing groundwater contaminant concentrations above drinking water standards, land use controls and groundwater monitoring were deemed the appropriate mechanism for ensuring groundwater at the site is not used as a potable source until groundwater contaminant concentrations reach drinking water standards in response to past ISCO applications. The remedial action also includes performing additional ISCO applications to address contaminant concentrations that persist above drinking water standards.

In accordance with the 2015 AOC E Remedial Acton Work Plan and 2018 Remedial Action Work Plan Addendum, annual land use control inspections and groundwater monitoring to evaluate progress toward achieving remedial goals have been conducted at AOC E since 2015. Because several contaminants persisted at concentrations above drinking water standards, an additional ISCO application was performed in 2018 in accordance with the Remedial Action Work Plan Addendum, as documented in the 2019 Interim Remedial Action Completion Report.

Following the 2018 ISCO application annual groundwater monitoring and land use control inspection continued. Information collected during the groundwater sampling and inspection events, as well as the additional ISCO application, are summarized in annual status reports, the most recent of which was issued in 2022.

AOC E Remedial Investigation Report, July 2008

AOC E Focused Feasibility Study, November 2012

AOC E Proposed Remedial Action Plan, November 2013

AOC E Record of Decision (English), January 2015A

AOC E Record of Decision (Spanish), January 2015A

AOC E Remedial Action Work Plan, January 2015

AOC E Remedial Action Work Plan Addendum, July 2018

AOC E Interim Remedial Action Completion Report, September 2019

AOC E Annual Status Report, February 2022

AOC H

Abandoned Power Plant

AOC H (Figure 2) was a power plant that operated between 1941 and 1943. The site was also used for firefighter training from the 1960s into the 1980s. The 2007 Remedial Investigation Report determined there were no unacceptable human health or ecological risks associated with the site. Therefore, a No Further Action Record of Decision was signed by the Navy and regulatory agencies in 2008.

A Site Inspection for PFAS is currently underway at AOC H because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” for additional detail).

AOC H Remedial Investigation Report, July 2007

AOC H Record of Decision (English), September 2008

AOC H Record of Decision (Spanish), September 2008

SWMU 6

Former Mangrove Disposal Site

SWMU 6 is a former 0.6-acre site located along Highway 200 near Laguna Kiani (Figure 2). The site was used during the 1960s and 1970s as a disposal area for general facility wastes, including bottles, rubble, and empty containers of lubricants, oil, solvents, and paints. Based on the findings and evaluations included in the 2007 Remedial Investigation Report, a removal action was conducted in 2009 to remove the debris and contaminated soil at the site.

Following the removal action, additional sediment data were collected and evaluated as part of a Supplemental Remedial Investigation, the results of which demonstrated no unacceptable risk to human health or the environment. Therefore, a No Further Action Record of Decision was signed by the Navy and regulatory agencies in 2018.

A Site Inspection for PFAS is currently underway at SWMU 6 because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of the previous table for additional detail).

SWMU 6 Remedial Investigation Report, February 2007

SWMU 6 Remedial Investigation Report Addendum, January 2016

SWMU 6 Record of Decision (English), July 2018

SWMU 6 Record of Decision (Spanish), July 2018

SWMU 7

Former Quebrada Disposal Site

SWMU 7 (Figure 2) was an ephemeral stream channel used between approximately 1965 and 1980 for disposal of trash including lubricants, oils, solvents, paint, old tires, sheet metal, empty containers such as drums, cans, and bottles, old batteries, and construction rubble. The 2008 Remedial Investigation Report determined the debris represented a potential long-term source of contamination at the site. Therefore, a removal action was conducted in 2009 to remove the debris and contaminated soil identified during the Remedial Investigation.

Evaluation of post-removal confirmatory samples determined there were no unacceptable human health or ecological risks remaining; therefore, a No Further Action Record of Decision was signed by the Navy and regulatory agencies in 2011.

A Site Inspection for PFAS is currently underway at SWMU 7 because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of the previous table for additional detail).

AOCs J and R and SWMU 7 Proposed Plan, February 2011

AOCs J and R and SWMU 7 Record of Decision (English), September 2011

AOCs J and R and SWMU 7 Record of Decision (Spanish), September 2011

Potential PFAS Areas of Interest (AOIs)

AOC B

AOC H

SWMU 6

SWMU 7

Former Fire Station Building 2046 at the Public Works Area

Potential Former Motor Pool Area

 

Since the AOC H, SWMU 6, and SWMU 7 No Further Action Records of Decision and the AOC B No Further Action Closeout were issued, PFAS have been identified nationwide as emerging chemicals of environmental concern. In response, the Navy completed a Preliminary Assessment of PFAS at the former NASD in 2020 and identified the six areas of interest (AOIs) listed here to the left where PFAS-containing materials may have been released. A Site Inspection is currently underway for these six AOIs.

PFAS Preliminary Assessment Report, April 2020

PFAS Site Inspection Sampling and Analysis Plan, December 2021


Environmental
Site Name Description Relevant Documents

AOC C

Drainage Ditch at Former Transportation Shop

AOC C was a drainage ditch near a former transportation shop within the Public Works Area (Figure 2) where an oily sheen was observed. The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, AOC C was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

AOC F

Former Underground Injection Control (UIC) Septic Tank

AOC F was a septic tank near the former Enlisted Men’s Club at the former Public Works Area (Figure 2). The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, AOC F was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

In 2015, the septic tank was abandoned in accordance with procedures approved by the Puerto Rico Environmental Quality Board.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

AOC F Closure Report, September 2015

AOC I

Former Asphalt Plant

AOC I (Figure 2) is a former asphalt plant that operated from the 1960s until 1988. The 2008 Remedial Investigation Report identified relatively low levels of contamination in soil and groundwater at the site, likely associated with minor drips and spills associated with asphalt operations. In addition, a relatively small area of groundwater contamination was identified.

Based on the findings of the Remedial Investigation, a study using ISCO to treat the area of groundwater contamination was conducted between 2010 and 2012, which reduced contaminant levels to acceptable levels (i.e., Federal, Commonwealth, or risk-based). Based on these results, a No Further Action Record of Decision was signed by the Navy and regulatory agencies in 2014.

In 2015, the septic tank was abandoned in accordance with procedures approved by the Puerto Rico Environmental Quality Board.

AOC I Remedial Investigation Report, June 2008

AOC I Record of Decision (English), September 2014

AOC I Record of Decision (Spanish), September 2014

AOC J

Former Operations/Staging Area Disposal Site

AOC J (Figure 2) was a solid waste disposal site for construction-related materials in use from 1965 to 1973. The 2007 Remedial Investigation Report determined the debris represented a potential long-term source of contamination at the site. Therefore, a removal action was conducted in 2009 to remove the debris and contaminated soil.

Evaluation of post-removal confirmatory samples determined there were no unacceptable human health or ecological risks remaining; therefore, a No Further Action Record of Decision was signed by the Navy and regulatory agencies in 2011.

AOC J Remedial Investigation Report, May 2007 - Volume 1Volume 2

AOCs J and R and SWMU 7 Record of Decision (English), September 2011

AOCs J and R and SWMU 7 Record of Decision (Spanish), September 2011

AOC K

Former Water Well

AOC K was a former potable water well, used from 1941 to 1979, just northeast of the Public Works Area (Figure 2). The well was plugged and abandoned in 1979 but was rehabilitated in 1997 by the United States Geological Survey (USGS) for its use. The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, AOC K was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

AOC L

Abandoned Septic Tank

AOC L was an abandoned septic tank and drainage field located north of the Public Works Area (Figure 2). The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, AOC L was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

AOC R

Former Staging and Operations Area

AOC R (Figure 2) was used for construction staging, public works operations, and vehicle maintenance from approximately 1965 to 1971. This use resulted in the accumulation of several debris piles and associated contaminated soil at the site. Therefore, during the Remedial Investigation, a removal action was conducted in 2009 to remove the debris and contaminated soil.

Evaluation of post-removal confirmatory samples determined there were no unacceptable human health or ecological risks remaining; therefore, a No Further Action Record of Decision was signed by the Navy and regulatory agencies in 2011.

AOC R Remedial Investigation Report, February 2011 - Volume 1, Volume 2, Volume 3

AOCs J and R and SWMU 7 Proposed Plan, June 2011

AOCs J and R and SWMU 7 Record of Decision (English), September 2011

AOCs J and R and SWMU 7 Record of Decision (Spanish), September 2011

SWMU 5

Former IRFNA/MAF-4 Disposal Site

SWMU 5 (Figure 2) is the site where, in 1975, a one-time disposal of 7,000 pounds of drone fuel (inhibited red fuming nitric acid/mixed amine fuel #4 [IRFNA/MAF-4]) from a leaking target drone onto the ground reportedly occurred. The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, SWMU 5 was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

SWMU 10

Former Waste Paint and Solvents Disposal Ground

SWMU 10 was the site where small quantities of paint, solvents, and thinners were reportedly disposed of on the ground within the Public Works Area (Figure 2). The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, SWMU 10 was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

SWMU 14

Former Wash Rack

SWMU 14 was a former wash rack used for cleaning Navy vehicles within the Public Works Area (Figure 2). The site was investigated during a Preliminary Assessment/Site Inspection.

 

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, SWMU 14 was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

SWMU 15

Former Waste Transportation Vehicle Parking Area

SWMU 15 was a former waste transportation vehicle parking area within the Public Works Area (Figure 2) where parked trucks may have contained drums that leaked. The site was investigated during a Preliminary Assessment/Site Inspection.

Based on the findings of the Preliminary Assessment/Site Inspection, which indicated the site posed no unacceptable risk to human health or the environment, SWMU 15 was included in a 2006 No Further Action Report for Nine Sites. In 2007, the Puerto Rico Environmental Quality Board concurred with the No Further Action findings.

No Further Action Report for Nine Sites at the Former NASD, October 2006

Puerto Rico Environmental Quality Board Concurrence, February 2007

 

Description of East Vieques Sites

The former Vieques Naval Training Range (VNTR), which comprises approximately 14,600 acres, was used for ground warfare and amphibious training for Marines, naval gunfire support training, and air to ground training. 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) (Figure 3).

Following cessation of military operations on the VNTR, the Navy subdivided the former operational areas into smaller parcels for investigation and cleanup based on considerations such as historic use, geographic features, and current/planned 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 (Figures 3 and 4).

On April 30, 2003, the former VNTR was transferred to the DOI to be managed by the 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. As noted previously, on February 11, 2005, Vieques was placed on the NPL, which required all subsequent environmental restoration activities to be conducted under CERCLA.

There are 56 sites on east Vieques, comprising 18 munitions response sites and 38 environmental sites. To date, 36 of the 38 environmental sites are complete with no further action required. In addition, Records of Decision have been finalized for one of the two remaining environmental sites and four of the munitions response sites, their remedies have been implemented, and the sites are under long-term monitoring to monitor site conditions and ensure land use controls remain in place and effective to support the planned land use.

A brief description of the sites that are currently in or have completed the CERCLA process is provided below, along with their key CERCLA document(s). All public documents related to these sites can be found in the Administrative Record.
 

Munitions Response
Site Name Description Relevant Documents

UXO 1

Eastern Conservation Area (ECA)

UXO 1 comprises 133 acres at the easternmost tip of Vieques, adjacent to the LIA (Figure 3). 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.

Based on information gathered during historical investigations beginning in 2003 and MEC removal actions conducted between 2005 and 2011, a Remedial Investigation/Feasibility Study was performed in 2011/2012 to assess the nature and extent of munitions and associated contaminants at the site, determine risks to human and ecological (plants and animals) receptors based on anticipated land uses, and evaluate remedial alternatives to address explosive hazards (MEC) potentially remaining at the site.

Based on findings and evaluations presented in the 2012 Remedial Investigation Report and the 2012 Feasibility Study Report, a Proposed Remedial Action Plan was issued for public comment in 2014 and a Record of Decision was signed by the Navy and regulatory agencies in November 2015. Because the risk assessments determined there are no unacceptable risks associated with actual and planned use of the site, the selected remedy addresses potential munitions remaining at the site in support of its 1983 designation as a Conservation Area. The remedial action was implemented in 2018, as documented in the 2019 Remedial Action Completion Report.

Following implantation of the remedial action in 2018, the site has been under long-term monitoring to monitor site conditions and ensure land use controls remain in place and effective to support Conservation Area land use. Results of site monitoring are summarized in annual reports, the most recent of which was issued in 2022.

UXO 1 Record of Decision (English), November 2015

UXO 1 Record of Decision (Spanish), November 2015

UXO 1 Remedial Action Work Plan, November 2016

UXO 1 Remedial Action Completion Report, August 2019

UXO 1 Annual Status Report, February 2022

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 beaches, totaling approximately 71 acres within the LIA (Figure 3). As noted previously, the LIA is a designated wilderness area by Federal law.

A Beach Dynamics Investigation was performed at and just offshore of 11 former NASD and VNTR beaches, including 6 beaches within the LIA. The investigation objective was to develop an understanding of beach and nearshore changes, and their relationship to the burial and mobility of munitions. Information gathered during the Beach Dynamics Investigation is used to plan further investigations and cleanup of the beaches and nearshore areas. The results of the investigation are included in the 2018 Beach Dynamics Investigation Report.

A Remedial Investigation was conducted at LIA beaches to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 2 beaches showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 2 beaches indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining at the beaches in support of the beaches being part of the designated Wilderness Area. The Feasibility Study will be conducted once the munitions removal actions at the beaches have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

Beach Dynamics Investigation Report, November 2018

UXOs 2, 7, and 8 (Beaches) Remedial Investigation Report, December 2020

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 roads within the LIA (Figure 3). As noted previously, the LIA is a designated wilderness area by Federal law.

A Remedial Investigation was conducted at UXO 3 roads to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 3 roads showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 3 roads indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining in the roads in support of their use in managing the LIA as a wilderness area. The Feasibility Study will be conducted once the munitions removal actions along the roads have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

UXOs 3, 5, 6, and 11 (Roads) Remedial Investigation Report, December 2020

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 areas except the LIA beaches (UXO 2) and roads (UXO 3), as shown in Figure 3.

A Remedial Investigation at UXO 4 was initiated in 2012 and is currently undergoing a time-critical removal action (TCRA) for MEC within the 75-acre submunitions area. Remedial Investigation data gathered to date is documented in the 2016 Remedial Investigation Status Report. The Remedial Investigation will incorporate information gathered during the TCRA into the existing data.

UXOs 4, 9, 10, 12, and 14 Remedial Investigation Status Report, May 2016

UXO 5

Surface Impact Area (SIA) Restricted Roads

The SIA comprises the 2,500-acre area established in the 1950s and 1960s for artillery fire, inert bombing, and strafing. UXO 5 consists of approximately 38 acres of roads within the SIA (Figure 3), some of which are planned for public access as part of USFWS’ Comprehensive Conservation Plan.

A Remedial Investigation was conducted at UXO 5 roads to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 5 roads showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 5 roads indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining in the roads in support of their use in refuge management activities as well as public access in certain areas. The Feasibility Study will be conducted once the munitions removal actions along the roads have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

UXOs 3, 5, 6, and 11 (Roads) Remedial Investigation Report, December 2020

UXO 6

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

The SIA comprises the 2,500-acre area established in the 1950s and 1960s for artillery fire, inert bombing, and strafing. 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 roads within the SIA and EMA (Figure 3), some of which are planned for public access as part of USFWS’ Comprehensive Conservation Plan.

A Remedial Investigation was conducted at UXO 6 roads to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 6 roads showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 6 roads indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining in the roads in support of their use in refuge management activities as well as public access in certain areas. The Feasibility Study will be conducted once the munitions removal actions along the roads have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

UXOs 3, 5, 6, and 11 (Roads) Remedial Investigation Report, December 2020

UXO 7

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

The SIA comprises the 2,500-acre area established in the 1950s and 1960s for artillery fire, inert bombing, and strafing. 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 within the SIA and EMA (Figure 3), some of which are planned for public access as part of USFWS’ Comprehensive Conservation Plan.

A Beach Dynamics Investigation was performed at and just offshore of 11 former NASD and VNTR beaches, including 2 beaches within the northern EMA and SIA. The investigation objective was to develop an understanding of beach and nearshore changes, and their relationship to the burial and mobility of munitions. Information gathered during the Beach Dynamics Investigation is used to plan further investigations and cleanup of the beaches and nearshore areas. The results of the investigation are included in the 2018 Beach Dynamics Investigation Report.

A Remedial Investigation was conducted at northern SIA and EMA beaches to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 7 beaches showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 7 beaches indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining at the beaches in support of their inclusion in refuge management activities as well as public access to certain beaches. The Feasibility Study will be conducted once the munitions removal actions at the beaches have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

Beach Dynamics Investigation Report, November 2018

UXOs 2, 7, and 8 (Beaches) Remedial Investigation Report, December 2020

UXO 8

Surface Impact Area (SIA) South Beaches

The SIA comprises the 2,500-acre area established in the 1950s and 1960s for artillery fire, inert bombing, and strafing. UXO 8 consists of nine beaches, totaling approximately 45 acres within the southern part of the SIA (Figure 3), some of which are planned for public access as part of USFWS’ Comprehensive Conservation Plan.

A Beach Dynamics Investigation was performed at and just offshore of 11 former NASD and VNTR beaches, including 2 beaches within the southern SIA. The investigation objective was to develop an understanding of beach and nearshore changes, and their relationship to the burial and mobility of munitions. Information gathered during the Beach Dynamics Investigation is used to plan further investigations and cleanup of the beaches and nearshore areas. The results of the investigation are included in the 2018 Beach Dynamics Investigation Report.

A Remedial Investigation was conducted at southern SIA beaches to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 8 beaches showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 8 beaches indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining at the beaches in support of their inclusion in refuge management activities as well as public access to certain beaches. The Feasibility Study will be conducted once the munitions removal actions at the beaches have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

Beach Dynamics Investigation Report, November 2018

UXOs 2, 7, and 8 (Beaches) Remedial Investigation Report, December 2020

UXO 9

Surface Impact Area (SIA) Exterior

The SIA comprises the 2,500-acre area established in the 1950s and 1960s for artillery fire, inert bombing, and strafing. UXO 9 makes up approximately 953 acres of the SIA, including the northern, southern, and eastern portions of the SIA, but excluding the roads (UXOs 5 and 6), beaches (UXOs 7 and 8), and interior area (UXO 10), as shown in Figure 3.

A Remedial Investigation at UXO 9 was initiated in 2012 and is currently undergoing a non-time-critical removal action (NTCRA) for MEC. Remedial Investigation data gathered to date is documented in the 2016 Remedial Investigation Status Report. The Remedial Investigation will incorporate information gathered during the NTCRA into the existing data.

UXOs 4, 9, 10, 12, and 14 Remedial Investigation Status Report, May 2016

UXO 10

Surface Impact Area (SIA) Interior

The SIA comprises the 2,500-acre area established in the 1950s and 1960s for artillery fire, inert bombing, and strafing. UXO 10 makes up the western 890 acres of the SIA (Figure 3).

A Remedial Investigation at UXO 10 was initiated in 2012 and is currently undergoing a NTCRA for MEC. Remedial Investigation data gathered to date is documented in the 2016 Remedial Investigation Status Report. The Remedial Investigation will incorporate information gathered during the NTCRA into the existing data.

UXOs 4, 9, 10, 12, and 14 Remedial Investigation Status Report, May 2016

UXO 11

Eastern Maneuver Area (EMA) Planned 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 roads through the EMA (Figure 3) some of which are planned for public access as part of USFWS’ Comprehensive Conservation Plan.

A Remedial Investigation was conducted at UXO 11 roads to assess the nature and extent of munitions and associated contaminants at the site and to determine risks to human and ecological (plants and animals) receptors based on anticipated land uses. As detailed in the 2020 Remedial Investigation Report, data from samples collected along UXO 11 roads showed no contamination posing unacceptable risks to human health or the environment. However, information from removal actions being conducted at UXO 11 roads indicate MEC from past military training may be present.

Based on the findings and evaluations presented in the Remedial Investigation Report, a Feasibility Study Report will be prepared that includes evaluation of various remedial alternatives to address potential munitions remaining in the roads in support of their use in refuge management activities as well as public access in certain areas. The Feasibility Study will be conducted once the munitions removal actions along the roads have been sufficiently completed such that the information gathered can be included in the remedial alternatives evaluation.

UXOs 3, 5, 6, and 11 (Roads) Remedial Investigation Report, December 2020

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 (Figure 3), a portion of which is planned for public access as part of USFWS’ Comprehensive Conservation Plan.

Based on information gathered during historical investigations beginning in 2003 and MEC removal actions conducted in 2012/2013, a Remedial Investigation/Feasibility Study was performed between 2012 and 2014 to assess the nature and extent of munitions and associated contaminants at the site, determine risks to human and ecological (plants and animals) receptors based on anticipated land uses, and evaluate remedial alternatives to address explosive hazards (MEC) potentially remaining at the site.

Based on findings and evaluations presented in the 2018 Remedial Investigation/Feasibility Study Report, a Proposed Remedial Action Plan was issued for public comment in 2019 and a Record of Decision was signed by the Navy and regulatory agencies in 2021. Because the risk assessments determined there are no unacceptable risks associated with actual and planned use of the site, the selected remedy addresses potential munitions remaining at the site in support of refuge management and public recreational use in portions of the area planned by USFWS.

The Remedial Action Work Plan is anticipated to be issued in 2022, and the remedial action is anticipated to be implemented by 2023.

UXOs 12 and 14 Remedial Investigation/Feasibility Study, August 2018

UXOs 12 and 14 Proposed Remedial Action Plan, March 2019

UXOs 12 and 14 Record of Decision (English), January 2021

UXOs 12 and 14 Record of Decision (Spanish), January 2021

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 portion of the EMA (Figure 3), a portion of which is planned for public access as part of USFWS’ Comprehensive Conservation Plan.

Based on information gathered during historical investigations beginning in 2003 and a MEC removal action conducted between 2011 and 2015 across multiple ranges and areas of UXO 13, a Remedial Investigation/Feasibility Study was performed for UXO 13, but its completion is currently on hold while additional removal actions for MEC potentially present at the site are being considered. Once all removal actions are completed and the information gathered compiled with historical data, the Remedial Investigation/Feasibility Study Report will be prepared.

 

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 (Figure 3), a portion of which is planned for public access as part of USFWS’ Comprehensive Conservation Plan.

Based on information gathered during historical investigations beginning in 2005, a Remedial Investigation/Feasibility Study was performed between 2012 and 2014 to assess the nature and extent of munitions and associated contaminants at the site, determine risks to human and ecological (plants and animals) receptors based on anticipated land uses, and evaluate remedial alternatives to address explosive hazards (MEC) potentially remaining at the site.

Based on findings and evaluations presented in the 2018 Remedial Investigation Report and the Feasibility Study Report, a Proposed Remedial Action Plan was issued for public comment in 2019 and a Record of Decision was signed by the Navy and regulatory agencies in 2021. Because the risk assessments determined there are no unacceptable risks associated with actual and planned use of the site, the selected remedy addresses potential munitions remaining at the site in support of refuge management and public recreational use in portions of the area planned by USFWS.

The Remedial Action Work Plan is anticipated to be issued in 2022, and the remedial action is anticipated to be implemented by 2023.

UXOs 12 and 14 Remedial Investigation/Feasibility Study Report, August 2018

UXOs 12 and 14 Proposed Remedial Action Plan, March 2019

UXOs 12 and 14 Record of Decision (English), January 2021

UXOs 12 and 14 Record of Decision (Spanish), January 2021

UXO 15

Puerto Ferro

UXO 15 is a 536-acre peninsula located in the southwestern corner of the former VNTR (Figure 3). Information gathered to date indicates the site was likely used for temporary ordnance storage, transport, and loading/offloading in support of military training activities elsewhere in the VNTR.

Based on USFWS’ Comprehensive Conservation Plan, removal actions were performed in 2014, 2015, and 2018 to remove MEC potentially present in areas of planned public use (i.e., access roads, trails, beaches, and area around the historic Spanish Lighthouse).

With the information gathered from historical records, removal actions, and investigations, a Remedial Investigation/Feasibility Study Report was prepared in 2020 that described the nature and extent of contamination, documented no unacceptable risks to human and ecological receptors, and evaluated remedial alternatives to address explosive hazards that may remain at the site.

Based on findings and evaluations presented in the Remedial Investigation/Feasibility Study Report, a Proposed Remedial Action Plan was issued for public comment by the Navy and regulatory agencies in 2021. The proposed remedy includes MEC clearance in planned public use areas where removal actions have not already taken place and implementation of land use controls. A Record of Decision is anticipated to be signed in 2022.

UXO 15 Remedial Investigation/Feasibility Study, July 2020

UXO 15 Proposed Remedial Action Plan, July 2021

UXO 16

Underwater Areas

UXO 16 comprises approximately 11,500 acres of the waters surrounding the former VNTR and NASD. The 500-acre portion of UXO 16 adjacent to the former NASD is discussed in “Sites Currently in the CERCLA Process – West Vieques” table. The 11,000-acre portion of UXO 16 adjacent to the former VNTR is where munitions may be located due to naval gunfire training or air-to-ground bombing and where the explosive safety arcs from artillery ranges extended offshore.

Because of the large size of UXO 16, the area is being subdivided into multiple focus areas for investigation and cleanup. The UXO 16.2 focus area comprises approximately 600 non-contiguous acres adjacent to 29 beaches that are currently open to the public or are being considered for public use. A Remedial Investigation is currently underway within UXO 16.2 to determine the nature and extent of munitions and munitions constituents in the nearshore marine environment. This multi-year Remedial Investigation began in 2022 is being conducted in accordance with the November 2021 UXO 16.2 Remedial Investigation Quality Assurance Project Plan. Information in the 2018 Beach Dynamics Investigation Report, which documents transport and burial mechanisms that may affect underwater munitions, and the 2018 Wide Area Assessment Report, which documents the distribution of potential munitions throughout UXO 16, were used to help plan the Remedial Investigation.

While the UXO 16.2 Remedial Investigation is ongoing, investigation planning will be performed for additional focus areas of UXO 16.

UXO 16 Underwater Wide Area Assessment Report, September 2018

Beach Dynamics Investigation Report, November 2018

UXO 16.2 Remedial Investigation Quality Assurance Project Plan, November 2021

UXO 17

Other Sites

UXO 17 consists of five sites located in the southwestern portion of the EMA in the former VNTR (Figures 3 and 4). Two of the sites, Potential Area of Concern (PAOC) EE and Playa Caracas (Red Beach), were used for military training associated with beach landings and are currently in the CERCLA process, as described below. The other three sites (Photo Identified [PI] 14, PI 21, and PAOC FF) were closed out of the CERCLA process with No Action Decision Documents in 2010 (PI 14 and PAOC FF) and 2014 (PI 21).

PAOC EE encompasses approximately 129 acres and includes the area in and around Playa La Chiva (Blue Beach) and Punta Conejo (Figure 4). No known historical live-fire activities occurred at the site, but the area was used for amphibious landings and other ship-to-shore activities.

Based on information gathered during historical investigations, a TCRA was performed at PAOC EE in 2014 to remove MEC potentially present in areas of existing/planned public use (e.g., parking areas, beach access trails, and Playa La Chiva).

With the information gathered from historical records, TCRA, and various investigations, a Remedial Investigation/ Feasibility Study Report was prepared in 2019 that described the nature and extent of contamination, documented no unacceptable risks to human and ecological receptors, and evaluated remedial alternatives to address explosive hazards that may remain at the site.

Based on findings and evaluations presented in the Remedial Investigation/ Feasibility Study Report, a Proposed Remedial Action Plan was issued for public comment by the Navy and regulatory agencies in 2022. The proposed remedy includes: (a) MEC clearance in planned public use areas where a removal action has not already taken place, and (b) implementation of land use controls. A Record of Decision for PAOC EE is anticipated to be signed in 2023.

Playa Caracas (Red Beach) is located west of Playa La Chiva (Blue Beach) and had a historical military training use similar to Playa La Chiva. Because a single MEC item was found in the subsurface of the parking area at Playa Caracas during a historical investigation, a TCRA was performed at Playa Caracas in 2021 to remove MEC potentially present in public use areas. No additional MEC were found during the TCRA. However, based on the TCRA and historical findings, a Remedial Investigation is planned for Playa Caracas in 2023.

PI 14 and PAOC FF No Action Decision Document, December 2010

PI 21 No Action Decision Document, June 2014

UXO 17 PAOC EE Remedial Investigation/Feasibility Study, June 2019

UXO 17 PAOC EE Proposed Remedial Action Plan, May 2022

UXO 18

Cayo La Chiva

UXO 18 (Cayo La Chiva) is the 12-acre island just offshore of Playa La Chiva (Blue Beach), which is located in the southwestern portion of the EMA in the former VNTR (Figures 3 and 4). The only documented military training activity on Cayo La Chiva was along the northern portion where a 0.50-caliber machine gun nest fired blank rounds during simulated amphibious landings at Playa La Chiva in 1950. However, during various investigations, several MEC (5-inch rockets) were identified both on the island and in the nearshore waters, all of which were subsequently removed. Details of investigations conducted at Cayo La Chiva are documented in the 2015 Remedial Investigation/Feasibility Report and 2016 Feasibility Study Addendum. These reports also document the nature and extent of contamination, results of human health and ecological risk assessments (which determined there are no unacceptable risks associated with human or ecological use of Cayo La Chiva), and evaluation of remedial alternatives to address the potential for MEC to remain at the site.

Based on findings and evaluations presented in the Remedial Investigation/ Feasibility Study Report and Feasibility Study Addendum, a Proposed Remedial Action Plan was issued for public comment in 2016 and a Record of Decision was signed by the Navy and regulatory agencies in 2018. The selected remedy, which was implemented in 2019, addresses potential munitions remaining at the site in support of potential public recreational use in portions of the area planned by PRDNER.

Since the remedy was implemented in 2019, PRDNER has decided not to open the planned trail and overlook/picnic area for recreational use for the foreseeable future. However, periodic monitoring is performed to ensure an appropriate level of protectiveness for potential visitors to the island. Results of this monitoring are provided in periodic status reports, the most recent of which was issued in February 2022.

UXO 18 Remedial Investigation/Feasibility Study, May 2015

UXO 18 Feasibility Study Addendum, April 2016

UXO 18 Proposed Remedial Action Plan, July 2016

UXO 18 Record of Decision (English), August 2018

UXO 18 Record of Decision (Spanish), August 2018

UXO 18 Remedial Action Work Plan, April 2019

UXO 18 Remedial Action Completion Report, September 2019

UXO 18 Annual Status Report, February 2022


Environmental
Site Name Description Relevant Documents

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) (Figure 4). 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 and Expanded Site Inspection 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

A Site Inspection for PFAS is currently underway at AOC G because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of the previous ”Sites Currently in the CERCLA Process” table for additional detail).

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

PI 5

Former Airfield and Associated Ditches

PI 5 is a surface water drainage from the former runway area south of Camp Garcia (Figure 4). 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 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

A Site Inspection for PFAS is currently underway at PI 5 because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of the previous ”Sites Currently in the CERCLA Process” table for additional detail).

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4), 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.

Various investigations were conducted at the landfill, beginning in 1984 and culminating with the 2011 Remedial Investigation/ Feasibility Study. The associated report described the nature and extent of landfilled debris and contamination but determined there were no unacceptable risks to potential human or ecological receptors at the site. However, this determination relied on maintaining a natural vegetative cover on the landfill and controlling access.

Based on the findings and evaluations presented in the Streamlined Remedial Investigation/Feasibility Study Report, a Proposed Remedial Action Plan issued for public comment in 2011 and a Record of Decision was signed by the Navy and regulatory agencies in 2011. The selected remedy, as documented in the Record of Decision and associated Explanation of Significant Differences, included removal of surficial debris across the landfill surface, natural vegetative cover, land use controls, and long-term monitoring. The remedy was implemented in two phases in 2013/2014 and 2015/2016, as documented in the 2017 SWMU 1 Remedial Action Completion Report.

Long-term monitoring, which includes land use control inspections and groundwater sampling, has been performed annually since 2016 in accordance with the 2016 SWMU 1 Revised Operations and Maintenance, Land Use Control, and Long-term Monitoring Work Plan. Results of monitoring are documented in annual status reports, the most recent of which was issued in November 2021.

A Site Inspection for PFAS is currently underway at SWMU 1 because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of this table for additional detail).

SWMU 1 Remedial Investigation/Feasibility Study, April 2011

SWMU 1 Record of Decision (English), September 2011

SWMU 1 Record of Decision (Spanish), September 2011

SWMU 1 Record of Decision Explanation of Significant Differences, October 2016

SWMU 1 Revised Work Plan, November 2016

SWMU 1 Remedial Action Completion Report, January 2017

SWMU 1 Annual Status Report, November 2021

SWMU 10

Former Sewage Treatment Lagoons

SWMU 10 is located approximately ½ mile southeast of former Camp Garcia (Figure 4). The domestic sewage treatment lagoons at the site 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, and Expanded Site Inspection 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.

A Site Inspection for PFAS is currently underway at SWMU 10 because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of the previous ”Sites Currently in the CERCLA Process” table for additional detail).

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

SWMU 20

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

SWMU 20 (Figure 4), formerly designated PI 4, was the location of former helicopter maintenance area, barracks, mess hall, and associated facilities. The site was part of a 2006 Preliminary Assessment/Site Inspection, a 2009 Expanded Site Inspection, and a 2011 Supplemental Site Inspection during which TCE and associated contaminants were identified in the groundwater. As a result of these findings, a Remedial Investigation was performed in 2013 and 2014 to delineate the nature and extent of contamination and assess potential risks. While no soil contamination was found that poses an unacceptable risk to human health or the environment, an area of TCE concentrations in groundwater above the Federal Maximum Contaminant Level (MCL) of 5 mg/L was delineated.

Based on the findings and evaluations in the Remedial Investigation Report, various alternatives to address the TCE groundwater contaminant plume are being evaluated. In addition, a Site Inspection for PFAS is currently underway at SWMU 20 because PFAS were not historically evaluated there (see “Potential PFAS Areas of Interest (AOIs)” at the bottom of this table for additional detail). If the results of the Site Inspection indicate a release of PFAS has occurred at SWMU 20 that warrants remedial action, PFAS will be included in the SWMU 20 Feasibility Study to ensure making a determination of the appropriate remedial action for the site.

SWMU 20 Remedial Investigation Report, August 2016

Potential PFAS Areas of Interest (AOIs)

SWMU 1

SWMU 10

AOC G

SWMU 20

PI 5

Camp Garcia Potential Former Motor Pool Area (including Building 340) and Former Fire Department Building 330

Runway south of Camp Garcia

Since the SWMU 1 Record of Decision and the SWMU 10, AOC G, and PI 5 No Further Action Decision Documents were issued, PFAS have been identified nationwide as emerging chemicals of environmental concern. In response, the Navy completed a Preliminary Assessment of PFAS at the former VNTR in 2020 and identified the seven areas of interest (AOIs) listed here to the left where PFAS-containing materials may have been released. A Site Inspection is currently underway for these seven AOIs.

PFAS Preliminary Assessment Report, April 2020

PFAS Site Inspection Sampling and Analysis Plan, December 2021

 

Munitions Response
Site Name Description Relevant Documents

PAOC FF (Part of UXO 17)

Possible Former Artillery Gun Area

PAOC FF (Figure 4) was originally identified as the possible location of a former artillery gun. 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.

PI 14 and PAOC FF No Action Decision Document, December 2010

PI 14 (Part of UXO 17)

Possible Miscellaneous Debris Disposal Area

PI 14 was a debris area just south of the eastern end of the former runway south of Camp Garcia (Figure 4). A site visit during a 2009 Site Inspection 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.

PI 14 and PAOC FF No Action Decision Document, December 2010

PI 21 (Part of UXO 17)

Possible Location of a Former Artillery Firing Position

PI 21 (Figure 4) was originally identified as 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.

PI 21 No Action Decision Document, June 2014


Environmental
Site Name Description Relevant Documents

AOC A

Former Diesel Fuel Fill Pipe Area

AOC A is the location of a former 15,000-gallon diesel UST and associated fuel fill pipe at Observation Post 1 (OP-1) in the former SIA (Figure 3). 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 VNTR and transfer of the property to the 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 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

AOC F

Former Rock Quarry

AOC F is a former rock quarry just southeast of Camp Garcia (Figure 4). 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.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

PAOC I

Former Power Plant and Mechanics Shop

PAOC I is a former power plant and mechanics shop (Building 401) at Camp Garcia (Figure 4). 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 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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) (Figure 4). 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 and Expanded Site Inspection 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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) (Figure 4). 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 and Expanded Site Inspection 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4). While there was no observable evidence of a release during historical site visits, a Site Inspection 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.

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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

PAOC M

Former Fuel Facility

PAOC M is a former Camp Garcia dispatch office, fuel facility, and sleeping quarters (Figure 4). 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 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

PAOC N

Former Fuel Farm and Filling Station

PAOC N is a former fuel farm and filling station at Camp Garcia (Figure 4). 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 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4). 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 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4). 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 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4). PAOC R is a former boiler house in Camp Garcia heat plant Building 617, which was constructed in 1970 and demolished 1984 (Figure 4). 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 and Supplemental Site Inspection 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. Therefore, the sites were included in a No Action/No Further Action Decision Document issued in 2011.

PI 7 and PAOCs Q and R No Action/No Further Action Decision Document, September 2011

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 (Figure 4). PAOC S also includes a former Camp Garcia power plant that had no direct relationship to the 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 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 at the former power plant. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4). 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 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.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

PAOC U

Former Vehicle Maintenance Area

PAOC U is a former vehicle maintenance area just north of former Building 303 at Camp Garcia (Figure 4). 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 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.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

PAOC V

Former Leaking Transformer Storage Area

PAOC V is the former storage area for a leaking transformer at Camp Garcia (Figure 4). 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. In addition, the contaminant source was removed. Therefore, the site was included in a No Action Decision Document issued in 2009.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

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 (Figure 4). Site visits found no evidence of hazardous waste, hazardous material, petroleum, or munitions storage or disposal. In addition, a Mangrove Forest Health and Status Report 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.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

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 (Figure 4). 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 and Site Inspection 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 Site Inspection. Evaluation of the data collected during the Environmental Baseline Survey and Site Inspection indicated there had not been a contaminant release that resulted in soil contamination that poses unacceptable risks to human health or the environment. In addition, the contaminant source was removed. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

PI 6

Former PCB Storage Pad and Vehicle Wash Pad

PI 6 (Figure 4) 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 and Site Inspection 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

PI 7

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

PI 7 is located approximately ¼ mile west of Camp Garcia (Figure 4). 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 and Expanded Site Inspection were conducted in 2006 and 2009, respectively, to determine if there had been contaminant releases at the site. During the Expanded Site Inspection, 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.

PI 7 and PAOCs Q and R No Action/No Further Action Decision Document, September 2011

PI 8

Former Motor Pool Maintenance Area

PI 8 is located south of the main road into the Vieques National Wildlife Refuge (Figure 4). 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 and Site Inspection 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

PI 10

Former Wastewater Leach Field

PI 10 is the location of possible former sewage-drying lagoons for a wastewater treatment plant (Figure 4). The site was inactive by 1964, and completely re-vegetated by 1994. Based on the observation of six impoundments possibly containing liquids in aerial photographs, sampling was conducted at the site during the Environmental Baseline Survey and Site Inspection 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 saltwater supply system (pumped from a natural lagoon to Camp Garcia) (Figure 4). During the Environmental Baseline Survey, 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 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. Therefore, the site was included in a No Action Decision Document issued in 2009.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

PI 20

Former Observation Point and Potential Quarry

PI 20 (Figure 4) 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.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

SWMU 2

Former Fuels Off-loading Site

SWMU 2 (Figure 4) 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 and Expanded Site Inspection 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

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 (Figure 4) 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, and Expanded Site Inspection 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.

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

SWMU 5

Former Spent Battery Accumulation Area at OP-1

SWMU 5 is a former spent battery accumulation area located at OP-1 in the former SIA (Figure 3). 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 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. Therefore, the site was included in a No Action Decision Document issued in 2009.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

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 (Figure 4). 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 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. Therefore, the site was included in a No Action/No Further Action Decision Document issued in 2010..

No Action/No Further Action Decision Document 7 Consent Order Sites and 14 PI/PAOC Sites, September 2010

SWMU 8

Former Waste Oil Accumulation Area at OP-1

SWMU 8 is a former waste oil accumulation area located at OP-1 in the former SIA (Figure 3). 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 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. Therefore, the site was included in a No Action Decision Document issued in 2009.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

SWMU 12

Former Solid Waste Collection Unit Area

SWMU 12 is a former solid waste collection unit area on the access road to OP-1 in the former SIA (Figure 3). 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 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. Therefore, the site was included in a No Action Decision Document issued in 2009.

No Action Decision Document for 4 Consent Order Sites and 6 PI/PAOC Sites, January 2009

 

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