&EPA
United States
Environmental Protection
Agency
Solid Waste And
Emergency Response
(5201 G)
SUPERFUND:
EPA/540/R-95/109
PB95-962941
9200.5-751C
May 1995
Progress at
National
Priority
List Sites
St. Thomas
St. John
St. Croix
Printed on Recycled Paper
PUERTO RICO &
VIRGIN ISLANDS
1995 UPDATE
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How to Use the NPL Book
The site fact sheets presented in this book
are comprehensive summaries that cover a
broad range of information. The fact sheets
describe hazardous waste sites on the NPL and
their locations, as well as the conditions
leading to their listing ("Site Description").
The summaries list the types of contaminants
that have been discovered and related threats
to public and ecological health ("Threats and
Contaminants"). "Cleanup Approach" pres-
ents an overview of the cleanup activities
completed, underway, or planned. The fact
sheets conclude with a brief synopsis of how
much progress has been made in protecting
public health and the environment. The
summaries also pinpoint other actions, such as
legal efforts to involve polluters responsible
for site contamination and community con-
cerns.
The fact sheets are arranged in alphabetical
order by site name. Because site cleanup is a
dynamic and gradual process, all site informa-
tion is accurate as of the date shown on the
bottom of each page. Progress is always being
made at NPL sites, and the EPA periodically
will update the site fact sheets to reflect recent
actions. The following two pages show a
generic fact sheet and briefly describe the
information under each section.
How Can You Use
This State Book?
You can use this book to keep informed
about the sites that concern you, particu-
larly ones close to home. The EPA is commit-
ted to involving the public in the decision
making process associated with hazardous
waste cleanup. The Agency solicits input from
area residents in communities affected by
Superfund sites. Citizens are likely to be
affected not only by hazardous site conditions,
but also by the remedies that combat them.
Site cleanups take many forms and can affect
communities in different ways. Local traffic
may be rerouted, residents may be relocated,
temporary water supplies may be necessary.
Definitive information on a site can help
citizens sift through alternatives and make
decisions. To make good choices, you must
know what the threats are and how the EPA
intends to clean up the site. You must under-
stand the cleanup alternatives being proposed
for site cleanup and how residents may be
affected by each one. You also need to have
some idea of how your community intends to
use the site in the future, and you need to know
what the community can realistically expect
once the cleanup is complete.
The EPA wants to develop cleanup methods
that meet community needs, but the Agency
only can take local concerns into account if it
understands what they are. Information must
travel both ways in order for cleanups to be
effective and satisfactory. Please take this
opportunity to learn more, become involved,
and assure that hazardous waste cleanup at
"your" site considers your community's
concerns.
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NPL LISTING HISTORY
Provides the dates when the
site was Proposed, made Final,
and Deleted from the NPL.
SITE RESPONSIBILITY
Identifies the Federal, State,
and/or potentially responsible
parties taking responsibility
for cleanup actions at the site.
ENVIRONMENTAL
PROGRESS
Summarizes the actions to
reduce the threats to nearby
residents and the surrounding
environment and the progress
towards cleaning up the site.
SITE NAME
STATE
EPAID* ABCOOOOOOO
Site Description
EPA REGION XX
COUNTY NAME
LOCATION
Other Names:
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX XXXXXXXXXXXXX ;
.XXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX XXXXXX XXXXXXXX \
XXXXXXXXX XX XXXXXX XXXX XXXXX XXXX X XXX XXXXX.
XXXXXXX XXX XXX30ft»«4XXXXX XXXXX XXXXXX XXXXXXXX XXXXXXXX XXXX XXXXXXXXXX .
XXXXXXXXXXXX XXXXXXXXX11*»tX3C XXX XX XXXXXXXXX XXXXX XXXX XXXX XXXXX XXXXXXX XXXXXXXX
xxxxxxxx xxxxxxxxx xxxx xxxxlftft^iixxxx •'xxxxxxx xxxxx xxxx xxxxx xxx xxx xxxxxx
xxxxxxxxxxxx xx xxxxxxx xxx xxxxx xxtew^xxx xxxxxx xx xxxx xxx xxxxx xxx xxxxx xxx xxxx
Site Responsibility:
XXXXXXXXXXXXX XXXXXXXXX
NPL Listing History
Proposed XWXX/XX
Final XX/XX/XX
Threats and Contaminants
.x xxxxx xxxxxxxxxxxx xxxxxx xxxxxxxxx xxxxxx.'cx xxxxxxx:
XXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX
XXXXXXXX XXX XXXXXXXXXXXX XXXXX XXX XXXXXXXXXXXXX XX (XXXXX XXXX
XXX XXXXXXXXXX XXXXXXXX XXXXXXX XXX XXXXXX XXXXXX XXXXX XXXXXX
XX XXXX XXXXXXXXXX XXXXXXXX XXXXXXXXXXXX XXXXXXXXX XXXX X XXX XX XXXXXXXXX
,xxx xxxxx xxxxxxx xxxxxxxx xxxxxxxx xxxxxxxxx xxxx xxxx xxxxx xxxx x:
Cleanup Approach
X XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX XXXXXXXXXXXXX X:
XXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX XXXXXX XXXXXXXX
Response Action Status
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX :
X, XXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX XXXXXX \
xxxxxxxxxxxx xxxxx xxx xxxxxxxxxxxxx xx xxxxxx xxxx xxxxx xxxx :
xxxxxxxx xxxxxxx xxx xxxxxx xxxxxx xxxxx xxxxxx xxxxxxxx xxxxxx
XXXXXXXXXX XXXXXXXX XXXXXXXXXXXX XXXXXXXXX XXXX X XXX XX XXXXXXXXX XXXXX XXXX XXXX XXXXX
XXXXXXX XXXXXXXX XXXXXXXX XXXXXXXXX XXXX XXXX XXXXX XXXX XXXXXXXX XXXXX XXXX XXXXX XXX
Site Facts:
:xxx xxx xxxxx xxxxxxxxxxxx xxxxxx xxxxxxxxx xxxxxxxx
XXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XKXX XX XXXXXX.OCX XX XX)
xxxxxxxxxxxx xxxxx xxx xxxxxxxxxxxxx xx xxxxxx xxxx xxxxx xxxx < xxx xxxxx:
Environmental Progress
xxx xxxxxxxxx:
xxxxxxxxxxxxx xxxxxxxxx
: xx xxxxxx xxxxxxxx xxx
Site Repository
xxxx xxxxxxxxxxx.
xxxxxxxxx
XXXXX XXXX
xxxxxx xxxxxxxxx
SITE REPOSITORY
Lists the location of the primary site repository. The site
repository may include community relations plans, public
meeting announcements and minutes, fact sheets, press
releases, and other site-related documents.
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SITE DESCRIPTION
This section describes the location and history of the site. It includes descrip-
tions of the most recent activities and past actions at the site that have con-
tributed to the contamination. Population estimates, land usages, and nearby
resources give readers background on the local setting surrounding the site.
THREATS AND CONTAMINANTS
The major chemical categories of site contamination are noted, as well as
which environmental resources are affected. Icons representing each of the
affected resources (may include air, groundwater, surface water, soil, and
contamination to environmentally sensitive areas) are included in the margins
of this section. Potential threats to residents and the surrounding environ-
ments arising from the site contamination also are described.
CLEANUP APPROACH
This section contains a brief overview of how the site is being cleaned up.
RESPONSE ACTION STATUS
Specific actions that have been accomplished or will be undertaken to clean
up the site are described here. Cleanup activities at NPL sites are divided
into separate phases, depending on the complexity and required actions at the
site. Two major types of cleanup activities often are described: initial,
immediate, or emergency actions to quickly remove or reduce imminent
threats to the community and surrounding areas; and long-term remedial
phases directed at final cleanup at the site. Each stage of the cleanup strategy
is presented in this section of the summary. Icons representing the stage of
the cleanup process (initial actions, site investigations, EPA selection of the
cleanup remedy, engineering design phase, cleanup activities underway, and
completed cleanup) are located in the margin next to each activity descrip-
tion.
SITE FACTS
Additional information on activities and events at the site are included in this
section. Often details on legal or administrative actions taken by the EPA to
achieve site cleanup or other facts pertaining to community involvement with
the site cleanup process are reported here.
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Guide to the NPL Book Icons
The "icons," or symbols, accompanying the text allow the reader to see at a glance which envi-
ronmental resources are affected and the status of cleanup activities at the site.
Icons in the Threats
and Contaminants
Section
Icons in the Response
Action Status Section
Contaminated Groundwater re-
sources in the vicinity or underlying
the site. (Groundwater is often used
as a drinking water source.)
Contaminated Surface Water and
Sediments on or near the site. .
(These include lakes, ponds,
streams, and rivers.)
Contaminated Air in the vicinity of
the site. (Air pollution usually is
periodic and involves contaminated
dust particles or hazardous gas
emissions.)
Contaminated Soil and Sludges on
or near the site. (This contamination
category may include bulk or other
surface hazardous wastes found on
the site.)
Threatened or contaminated Envi-
ronmentally Sensitive Areas in the
vicinity of the site. (Examples
include wetlands and coastal areas
or critical habitats.)
Initial, Immediate, or Emergency
Actions have been taken or are
underway to eliminate immediate
threats at the site.
Site Studies at the site to determine
the nature and extent of contamina-
tion are planned or underway.
Remedy Selected indicates that site
investigations have been concluded,
and the EPA has selected a final
cleanup remedy for the site or part
of the site.
Remedy Design means that engi-
neers are preparing specifications
and drawings for the selected
cleanup technologies.
Cleanup Ongoing indicates that the
selected cleanup remedies for the
contaminated site, or part of the site,
currently are underway.
Cleanup Complete shows that all
cleanup goals have been achieved
for the contaminated site or part of
the site.
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EPA ID
Number
PRD980509129
PRD980763783
PRD980640965
PRD090282757
PRD980512362
PR4170027383
PRD090370537
PRD980301154
PRD980763775
VID980651095
VID982272569
Site Name
BARCELONETA LANDFILL
FIBERS PUBLIC SUPPLY WELLS
FRONTERA CREEK
GE WIRING DEVICES
JUNCOS LANDFILL
NAVAL SECURITY GROUP ACTIVITY
RCA DEL CARIBE
UPJOHN FACILITY
VEGA ALTA PUBLIC SUPPLY WELLS
ISLAND CHEMICAL CORP/V.I. CHEMICAL CORP
TUTU WELLFIELD
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BARCELONETA
LANDFILL
PUERTO
EPA ID#
EPA REGION 2
Florida County
Florida Afuera
Other Names:
icipal Landfill Barceloneta
Site Description
The 20-acre Barceloneta Landfill site is an active landfill. About 300 tons of hazardous wastes
have been placed in sinkholes, some of which are 100 feet deep. No artificial or natural barrier
exists to keep wastes from moving into the groundwater; the limestone formations underlying the
site promote the rapid transport of contaminants. Groundwater is the drinking source in the area
and is also used for irrigation. No contamination has been found off site to date, but pollution of
drinking supplies is possible. The surrounding area is commercial, residential, and agricultural.
Approximately 12,000 people live within a 3-mile radius of the site, and the nearest home is
about 500 feet away. Area residents use the site for scavenging and for driving all-terrain
vehicles. People swim and fish in Quebrada Cimarrona, a stream located on the site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 12/30/82
Final Date: 09/08/83
Threats and Contaminants
Preliminary on-site sampling results have identified various heavy metals and volatile
organic compounds (VOCs) in sludges. The same sampling data disclosed toluene in
surface water and heavy metals in water runoff. People may experience adverse health
effects from touching contaminated soils and inhaling contaminated dust. Swimming in
the on-site stream may be a health risk, as well as eating fish from the contaminated
waters. Cattle grazing on adjacent land may be exposed to contamination from the
site. Furthermore, the area of the site is a breeding ground for the Puerto Rican boa,
designated as an endangered species by the U.S. Fish and Wildlife Service.
November 1994
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Cleanup Approach
This site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire Site: In 1988, the EPA began an intensive study of pollution problems at the
site. This investigation currently is being conducted by the parties potentially
responsible for contamination at the site under EPA monitoring and will explore the
nature and extent of soil and water contamination. It is scheduled for completion in 1995, at
which time the EPA will select the best strategies for final site cleanup.
Site Facts: Two Notice Letters were sent to potentially responsible parties in 1983. In 1988, an
additional search for potentially responsible parties identified several parties that had used the
landfill. On September 1990, an Administrative Order on Consent was signed by eight industries,
a waste transporter, the municipality of Barceloneta, and the EPA, in which the parties agreed to
complete the site investigation. The site investigation is currently underway.
Environmental Progress
After adding this site to the NPL, the EPA performed preliminary investigations and determined
that no immediate actions were required at the Barceloneta Landfill site while further studies are
being completed and the long-term cleanup activities are being planned.
November 1994 2 BARCELONETA LANDFILL
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FIBERS PUBLIC
SUPPLY WELLS
PUERTO RICO
EPA ID# PRD980763W3
EPA REGION 2
Guayama County
Guayama
Site Description
The Fibers Public Supply Wells serve as a stand-by water supply for Guayama. Four of the five
wells are closed due to contamination by halogenated solvents. The U.S. Geological Survey
detected the contamination in 1982 during a survey of public water wells. A synthetic fiber
manufacturing plant operated in an area believed to be immediately upgradient of the supply
wells. Wastewater from solvent cleaning of the machinery was emptied into two lagoons near the
southwestern corner of the site before liners were installed in 1969, as well as later, when the
liners were not intact. In 1985, the two wastewater settling ponds were converted into a
stormwater retention basin. This conversion consisted of removing approximately 2,000 cubic
yards of soil from the lagoons. The material was then spread over the northwestern corner of the
project site. The wastewater subsequently was piped to an off-site biological treatment system.
During the excavation process, the liners in some areas of both of the lagoons were found
missing. A pharmaceutical manufacturing facility currently operates on the site. The Fibers
Public Supply Wells site is located in an industrial and agricultural area in the Municipality of
Guayama, with a population of approximately 41,000. There are approximately 50 residents
living adjacent to the site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
On-site monitoring well sampling results identified various volatile organic compounds
(VOCs) believed to have originated from a nearby fiber manufacturer. The soil also is
contaminated with various VOCs. Individuals may be at risk if direct contact is made
with contaminated groundwater or soil. Closing the contaminated wells has reduced
the potential for drinking contaminated groundwater.
November 1994
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Cleanup Approach
This site is being addressed in three stages: initial actions and two long-term remedial phase
focusing on cleanup of the entire site.
Response Action Status
Initial Actions: Water supply wells were closed after a 1982 survey detected
contamination.
Soil: In 1991, the parties potentially responsible for site contamination completed an
investigation into the nature and extent of contamination at the site. Removal of
contaminated soil was selected as a cleanup remedy in the fall of 1991. A design for
the remedy was completed in the fall of 1993. In early 1994, contaminated soil was removed
and cleanup activities were completed.
Groundwater: In late 1992, the potentially responsible parties began a design of the
selected groundwater pump and treat remedy, which provides for discharge to the
Puerto Rico Environmental Protection Agency (PREPA) irrigation well. The design is scheduled
for completion in late 1995.
Site Facts: Phillips Petroleum Company and the Chevron Chemical Company signed an
Administrative Order on Consent in 1985 requiring them to perform an investigation into the
extent of contamination and to identify alternative technologies for cleanup. American Home
Products Corporation (AHP) signed an Administrative Order in 1986, agreeing to conduct
sampling and analysis at the plant site in Guayama. In 1987, American Home Products signed a
new order to perform a more detailed field investigation. The investigation was concluded in
1991, at which time EPA selected remedies for site contamination. In September, 1992, the
responsible parties, Anaquest Caribe, Inc., Phillips Petroleum Company, American Home
Products Corporation and Chevron Chemical Company entered into a Consent Decree wherein
they agreed to perform the clean up selected by EPA and reimburse past and future expenses of
the United States.
Environmental Progress
By removing the contaminated water wells from service, the potential for exposure to
contaminated drinking water was virtually eliminated. Cleanup progress now includes completing
the removal of the contaminated soils. The design for groundwater treatment is currently
underway and is scheduled for completion in the fall of 1995.
November 1 994
FIBERS PUBLIC SUPPLY WELLS
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FRONTERA CREEK
PUERTO RICO
EPA ID# PRD9806
EPA REGION 2
Humacao County
Rio Abajo
Other Names:
Ciudad Cristiana
Site Description
The 100-acre Frontera Creek site consists of areas that lie east of the town of Junquito and
extend to the creeks that enter into the Caribbean Sea, industrial properties adjacent to Frontera
Creek, North and South Frontera Lagoons, and the Ciudad Cristiana Housing Development.
From 1971 until 1981, various nearby industrial properties discharged industrial waste directly
into Frontera Creek. The public became concerned about the creek's possible contamination in
1977, following the death of thirty cows that had grazed in the affected area. Subsequent
investigations by the EPA and several local industries confirmed that contaminants, including
mercury and the pesticide lindane, were present in the creek. Several industries were identified as
contributing to site contamination. The Puerto Rico Environmental Quality Board (PREQB) fined
one of them, Technicon, in 1978 for discharging mercury into the creek. The 500 residents of the
housing development of Ciudad Cristiana, which was built along the creek in 1979, began to
complain of health problems within a year after their arrival. Blood and urine samples of the
residents, obtained by the Puerto Rico Department of Health (PRDH), showed above-normal
concentrations of mercury. In addition, investigations conducted by the PREQB found that soil in
and near the development was contaminated with mercury. As a result, the Governor of Puerto
Rico ordered an immediate permanent evacuation of the 500 residents of Ciudad Cristiana.
Studies conducted by the EPA and the Agency for Toxic Substances and Disease Registry
(ATSDR) concluded that the mercury levels were not high enough to warrant an immediate
evacuation of the residents. However, the EPA proceeded with a full investigation of the Frontera
Creek site because of the known contamination. Local residents used the lagoons for fishing and
recreation; the fish and the shellfish caught there were important components of the local diet.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 12/30/82
Final Date: 09/08/83
Threats and Contaminants
Mercury in the soils and sediments in the Technicon ditch may present a risk to
workers or others that come into contact with these contaminated materials.
November 1 994
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Cleanup Approach
This site is being addressed in a single long-term remedial phase focusing on cleanup of the
entire site.
Response Action Status
Entire Site: The plan for investigating the site contamination, conducted by the
potentially responsible parties, was approved by the EPA and the Commonwealth of
Puerto Rico in 1986. The investigation was completed in 1991. The EPA cleanup
remedies were selected in September 1991, which included excavating the sediments in the
Technicon ditch leading to Frontera Creek and removing some soils on the Technicon property.
The responsible parties, Miles Diagnostics Corporation, Miles, Inc., Cooper Development
Company, and Rev Ion, Inc. entered into an agreement to perform the clean up selected by the
EPA and reimburse past and future costs of the United States. The design for cleanup is
currently underway, and is scheduled for completion in late 1994.
Site Facts: An Administrative Order on Consent was signed by the potentially responsible
parties in 1986, requiring them to perform an investigation of site contamination. The Consent
Decree to perform site cleanup actions was signed by the responsible parties in May 1992 and
entered in Federal District Court on October 8, 1993.
Environmental Progress
After adding this site to the NPL, the EPA performed preliminary investigations and determined
that no immediate actions were required to protect the residents living near the Frontera Creek
site while long-term cleanup activities are being designed.
November 1994 2 FRONTERA CREEK
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GE WIRING DEVICES
PUERTO RICO
EPA ID#PRD09028275
EPA REGION 2
Juana Diaz County
Juana Diaz
Site Description
General Electrical Company Wiring Devices manufactured mercury light switches at this 5-acre
site from 1957 until 1969. Approximately 1/2 ton of mercury was discarded, along with 4,000
cubic yards of defective switch parts and plastic scraps, into a 1/2-acre waste area located on the
site. A concrete retaining wall and a fence separate the waste area from nearby residences. An
estimated 500,000 gallons of water found just beneath the surface have accumulated within the
waste area as a result of rainfall and infusion of groundwater in the waste pit. Investigations at
the site have shown that contamination of the water table may occur due to the migration of water
through the clay layer that exists beneath the waste area. There are approximately 10,000 people
living within 3 miles of the waste area. Groundwater in the area is used as a source of drinking
water, with a public supply well located approximately 1,500 feet west of the waste area.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 12/30/82
Final Date: 09/08/83
Threats and Contaminants
ZEJ
Groundwater, soil, and debris located in the waste area are contaminated with
mercury from the former manufacturing activities. The inhalation of mercury vapors
from the site poses the greatest potential health risk. Mercury detected on site is
primarily organic mercury, considerably more toxic than other forms. During
excavation, workers could be exposed to mercury-contaminated soils. Groundwater
from the site is flowing towards the west and could eventually contaminate the San
Jacaquas River.
November 1 994
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Cleanup Approach
This site is being addressed in two stages: immediate actions and a long-term remedial phase
focusing on cleanup of the entire site.
Response Action Status
Immediate Actions: General Electric installed a storm drain system and retaining
wall in 1982 as a preliminary action to control migration of surface mercury
contamination toward nearby residential areas.
Entire Site: Based on the results of the site investigation, in September 1988, EPA
selected the final methods to be used for cleanup of the site including: conducting
treatability studies on the soil and debris and treating the waste materials, water, and
contaminated on-site surface soil with a process that separates the mercury from soils with
leaching agents and metal recovery; disposing of treated material to waste areas located on the
site; conducting additional groundwater and soil investigations; and monitoring groundwater and
air to ensure the effectiveness of the cleanup actions. General Electric conducted the groundwater
study. Groundwater has not been impacted by the waste pile. The treatability studies conducted
by the US Bureau of Mines on the hydrometallurgical treatment of the mercury waste were found
to be ineffective. General Electric has conducted treatability studies on other processes,
including a different hydrometallurgical treatment. Primary results indicated that the situation was
favorable for mercury recovery. General Electric will be conducting a full scale pilot test to fully
evaluate this technology. General Electric completed the additional soil sampling near the waste
pile and the residential yards in August 1993. Preliminary design of the hydrometallurgical
treatment process began in the fall of 1994 and is expected to be completed in 1995.
Site Facts: An Administrative Order of Consent was signed by General Electric to undertake
the investigation to determine the nature and extent of contamination and to identify alternatives
for cleanup, as well as responsibility for designing the methods and conducting the overall
cleanup of the site.
Environmental Progress
The immediate actions described above stopped the potential migration of contaminants from the
GE Wiring Devices site to nearby residential areas, making it safer while long-term cleanup
activities are being designed.
November 1994 2 GE WIRING DEVICES
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JUNCOS LANDFILL
PUERTO RICO
EPA ID# PRD98051$362
EPA REGION 2
Juncos County
Juncos
Site Description
The 11-acre Juncos Landfill is a closed municipal landfill at which thermometers containing
mercury have been dumped. Small leachate seeps and soil erosion were evident during the site
inspections conducted by the EPA. Of greatest concern are houses adjacent to the landfill. The
community is served from a public water supply. Limited barriers exist to prevent local residents
or animals from entering the site. There are approximately 10,000 people living within a 3-mile
radius of the site. Several small creeks are located near the landfill.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
IMPL LISTING HISTORY
Proposed Date: 12/30/82
Final Date: 09/08/83
Threats and Contaminants
The groundwater and soil are contaminated with heavy metals and chloroform.
Touching or accidentally ingesting the contaminated soil could lead to potential health
hazards. Pollutants may seep from the landfill into the groundwater. Ingestion of
contaminated groundwater may pose a health hazard.
Cleanup Approach
This site is being addressed in three stages: immediate actions and two long-term remedial phases
focusing on cleanup of the landfill and contaminated groundwater.
November 1994
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Response Action Status
Immediate Actions: In 1984, the parties potentially responsible for the
contamination posted signs and installed a partial fence around the site; they also
covered the landfill and the discarded mercury-containing thermometers with topsoil.
Landfill: The potentially responsible parties began a study in 1984 to evaluate the
nature and extent of the contamination associated with the landfill wastes. The work
was completed in 1991. In September 1991, EPA selected a remedy that called for
installation of a cap on the landfill. The design for the cleanup activities began in late 1992 and
is scheduled for completion hi 1995.
Ground water Contamination: The studies conducted to determine the nature and
extent of groundwater contamination at the site and to evaluate various cleanup
alternatives were completed in the fall of 1993. In October 1993, EPA selected a
remedy that allowed for natural attenuation of the contaminants in the groundwater, institutional
controls to restrict its use until it reaches safety levels, and groundwater monitoring.
Site Facts: A Consent Order was signed with Becton Dickinson, in which the company was
responsible for immediate corrective actions at the landfill in 1984. An Administrative Order also
was issued by the EPA in 1984 to Becton Dickinson to study the nature and extent of
contamination at the site. A Unilateral Administrative Order was issued by EPA on September
30, 1992 to four industries and three present and past owners requiring them to implement the
remedy for the landfill.
Environmental Progress
The immediate actions described above have limited the access to the site, reducing the potential
for exposure to hazardous materials at the Juncos Landfill site while cleanup activities are being
designed.
November 1 994
JUNCOS LANDFILL
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NAVAL SECURITY
GROUP A
PUERTO RIC
EPA ID# PR41700
Site Description
EPA REGION 2
Toa Baja County
Village of Sabana Seca
Other Names:
Sabana Seca
The 2,200-acre Naval Security Group Activity site, a naval communications station which
operates a high-frequency direction finding facility, lies next to Sabana Seca, about 11 miles west
of San Juan, and is divided into North and South Tracts. From the early 1950s through 1970, the
operation's Public Works Department deposited all waste generated at the station at various areas
on the South Tract. Materials included paints, solvents, waste oil, and battery acid. A pest
control shop also was run on the South Tract from the 1950s through 1979. Workers spilled
various pesticides around the shop building. They also mixed pesticides and cleaned applicators
in a sink outside the shop that discharged directly to the ground. In 1984, soil samples showed
elevated levels of arsenic, lead, and chlordane. Rain could wash soil contaminants through a
drainage ditch to a marsh, and the fractured limestone bedrock may allow pollutants to move into
the groundwater. Initial studies identified seven potentially contaminated sites, including the
former pest control shop and a leachate ponding area. Approximately 47,000 people living in and
around the station obtain drinking water from public wells within 3 miles of the site.
Groundwater also is used for stock watering and industrial processes. Surface water within 3
miles downstream of the shop is used for recreational fishing. The San Pedro Marsh, a large
coastal wetland, is within 1,000 feet of both tracts.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 06/24/88
Final Date: 10/04/89
Threats and Contaminants
Soils outside the pest control shop are contaminated with various heavy metals and
pesticides. PCB-contaminated materials from another off-site location are stored near
the pest control shop. Potential routes for migration of contaminants may threaten the
sensitive coastal wetlands. The Cocal River is known to support numerous fish, as
well as crab and shrimp species. Blue Land Crabs are abundant in the San Pedro
Swamp and are recreationally harvested from it. Stormwater runoff from the shop
enters a drainage ditch that empties into a stream. The Puerto Rican boa, designated
by the U.S. Fish and Wildlife Service as an endangered species, has been sighted in
numerous locations on the station.
November 1994
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Cleanup Approach
This site is being addressed in four remedial stages: an initial action and three long-term remedial
phases focusing on cleanup of pesticide shop soil and water pollution, and pistol range disposal
and leachate pond areas.
Response Action Status
Initial Action: In 1988, the Navy installed a fence around the former pest control
shop to prevent exposure to the spilled pesticides.
Pesticide Control Shop: The Navy began an intensive study of soil and water
pollution at the site in early 1993. This investigation will explore the nature and extent
of contamination and will recommend the best strategies for final cleanup. The study
Pistol Range Disposal and Leachate Pond Areas: Beginning in 1993, the Navy
began an investigation of the pistol range disposal and leachate pond areas.
Contaminated leachate at the leachate pond area apparently originates from the
municipal landfill off site, but is being included in the study to protect base water supplies.
Several monitoring wells have been installed to determine whether the Navy water supply is in
danger. The sites investigation is scheduled for completion in late 1995.
Disposal Areas: Beginning in 1993 the Navy started preliminary site investigations
of the Disposal Areas at Bunker 607 and N. and S. Stone Road to determine if further
investigation is required.
Site Facts: An Interagency Agreement was signed between the EPA, the Navy, and the
Commonwealth of Puerto Rico on March 19, 1992. The site is participating in the Installation
Restoration Program, a specially funded program established by the Department of Defense
(DoD) to identify, investigate, and control the migration of hazardous contaminants at military
and other DoD facilities.
Environmental Progress
Initial fencing of the site has eliminated the possibility of exposure to spilled pesticides around the
pesticide shop at the Naval Security Group Activity site while further studies leading to the
selection of final long-term cleanup remedies are being completed.
November 1994 2 NAVAL SECURITY GROUP ACTIVITY
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RCA DEL CARIBE
PUERTO RICO
EPA ID# PRD090370537
EPA REGION 2
Barceloneta County
Barceloneta
Site Description
The 20-acre RCA Del Caribe site manufactured aperture masks for color television picture tubes
and has been in operation since 1971. General Electric acquired RCA in 1986 and has phased
out operations since 1987. Spent ferric chloride solution from site operations was stored in four
lined surface lagoons. These lagoons were breached by sinkholes, and approximately 1 million
gallons of ferric chloride was discharged into the sinkholes. Since 1982, the ferric chloride has
been stored in tanks. Process water contaminated with ferric chloride was treated in an on-site
wastewater treatment system. The generated sludge was placed into two sludge drying beds and
in at least two lagoons. The approximately 12,000 people residing within 3 miles of the site
depend on groundwater for drinking water. There is a public water supply well located
approximately 3/4 mile from the site. The surrounding area is dedicated to pineapple growing
and cattle raising.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 12/30/82
Final Date: 09/08/83
Threats and Contaminants
There was concern that groundwater and soil may have been contaminated with heavy
metals including chromium, beryllium, selenium, and iron from the former
manufacturing process wastes. Potential health threats may have existed if people
touched or accidentally ingested the contaminated groundwater or soil.
Cleanup Approach
This site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
March 1995
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Response Action Status
Entire Site: The potentially responsible party completed an investigation in the fall of
1994 to determine the nature and extent of contamination and to identify alternatives
for cleanup. Five monitoring wells were drilled, and groundwater and soil samples
were collected as part of the investigation. In addition, dye tracer studies were completed at the
site. After completion of the study, the EPA chose to conduct no further action at the site. Risk
levels for human health were determined to be within EPA standards for acceptable levels of
contamination.
Site Facts: Under an Administrative Order, General Electric Company has conducted site
studies and will address closure requirements at the site. In addition, the site is being addressed
under the hazardous wastes statutes of the Resource Conservation and Recovery Act (RCRA)
program.
Environmental Progress
The EPA performed investigations at the RCA Del Caribe site and determined that no further
actions were required. The current process of treating the ferric chloride is protective of human
health and the environment and in accordance with RCRA regulations.
March 1995
RCA DEL CARIBE
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UPJOHN FACILITY EaPA REG'ON 2
Barceloneta County
PUERTO RICO nf^r-W-rr^^^ Barceloneta
EPA ID# PRD980301 1 5>f^ VM^U^tlZl Other Names:
'in Manufacturing Company
Carbon Tet. Spill
Site Description
The 2-acre Upjohn Facility site contains a pharmaceutical manufacturing plant. In 1982,
approximately 15,300 gallons of waste material, including carbon tetrachloride, leaked from an
underground storage tank on the site. Six wells were sampled for contamination shortly after the
leak was detected; four were taken out of service, and one on the adjacent A.H. Robins property
was commissioned as a recovery well. The population affected by the contaminated wells was
given alternative water supplies and, subsequently, the company installed a replacement well and
connected one area to the public water system. Upjohn also installed 22 groundwater monitoring
wells. In 1984, the tank farm area of the facility was covered with a fiberglass-reinforced
concrete pad to prevent rainwater from seeping into the ground. The company installed an
extraction well downgradient of the spill area to intercept the majority of the contaminated
groundwater before it left the site. In addition, 19 vacuum extraction wells were employed to
withdraw carbon tetrachloride from the soil. More than 12,000 gallons of carbon tetrachloride
have been removed from the soil and groundwater. Upjohn ceased all use of carbon tetrachloride
by 1986. The Upjohn facility is located in a sparsely populated area. Two communities,
Tiburones and Garrochales, with a population of approximately 3,000 people, are directly
affected by the site. The island's largest aquifer is underneath the site and supplies drinking
water to 12,000 people. In addition, the aquifer discharges to a wetland area that supports a
large aquatic and bird population. The Rio Grande de Arecibo and Rio de Manati are located
along the borders of the site.
_. _ ..... _..... ,, , .. . NPL LISTING HISTORY
Site Responsibility: This site is being addressed through
Federal and potentially responsible
parry's actions.
Threats and Contaminants
Proposed Date: 09/08/83
Final Date: 09/21/84
Groundwater and soil at the site are contaminated with carbon tetrachloride and its by-
products from Upjohn's former manufacturing process wastes. Metals detected in the
groundwater are believed to be a result of contamination originating from other local
industries and development of the stainless steel monitoring wells. People who touch
or drink the water from the wells tapping the aquifer may be at risk. The aquifer
discharges into wetlands, but the risk to aquatic and terrestrial wildlife is expected to
be low based on estimates of existing and future concentrations of contaminants in the
environment.
December 1994
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Cleanup Approach
This site is being addressed in two stages: immediate actions and a long-term remedial phase
focusing on cleanup of the entire site.
Response Action Status
Immediate Actions: Upjohn conducted a study of the site in 1983 and performed
the initial cleanup actions, including covering some areas and installing extraction
wells to remove contaminants from soil and groundwater. However, the EPA
determined that additional measures were needed to ensure that the site will not pose a future
threat to human health or the environment.
Entire Site: In 1988, the EPA selected a remedy to clean up the site by: continuing
to pump the groundwater using the existing extraction wells, treating the contaminated
water by air-stripping, and discharging the treated water into a sinkhole on the Upjohn
property; completing of a new public water supply well to replace the Garrochales #3 well;
adding new extraction wells if the others prove successful in removing contamination; long-term
monitoring of the site to ensure the remedy is effective; and re-evaluating the site within 5 years
to determine whether cleanup operations need to be continued or modified. In early 1992, Upjohn
completed the drilling of the Garrochales #3 replacement well to serve as the new water supply.
Hook-up of the new well is expected to be complete in late 1994. While Upjohn has been
pumping and treating the groundwater since 1982, the EPA determined that a larger scale effort
to remove contaminated groundwater was necessary. The new full-scale pump and treat system
will incorporate the system that has been operating since 1982. The technical design for the new
system was completed in late 1993. The system is expected to be operational in 1995. The EPA
expects that this will be the last cleanup effort required at the Upjohn Facility site.
Site Facts: In 1987, the EPA and Upjohn entered into a Consent Order in which the company
agreed to perform studies of the site. In 1989, the EPA issued a Unilateral Administrative Order
requiring Upjohn to design and conduct the cleanup remedies selected by the EPA in 1988.
Environmental Progress
The groundwater extraction and treatment process that began as an immediate action, as well as
the removal of contaminants from the soil, have reduced the potential for exposure to hazardous
substances at the Upjohn site. The EPA anticipates that the full-scale groundwater pump and
treat system will be operational in 1995 and will be the final cleanup action required at this site.
December 1 994
UPJOHN FACILITY
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VEGA ALTA PUBLIC
SUPPLY WELLS
PUERTO RICO
EPA ID# PRD980763775
EPA REGION 2
Vega Alta County
Vega Alta
Site Description
The Vega Alta Public Supply Wells site covers 50 acres and consists of nine active and six
inactive wells. The wells currently supply about 4 million gallons of water each day to Vega Alta
and the surrounding residential areas. The Puerto Rico Aqueduct and Sewer Authority (PRASA)
is responsible for operating and maintaining the public water supply system. The U.S. Geological
Survey sampled the wells in 1983 and found volatile organic compounds (VOCs) in the
Ponderosa well. Subsequently, this well and the GE 1 well were shut down due to contamination.
Then PRASA constructed the Bajura 3 well to eliminate the water supply shortage. In 1989, GE
2 and Bajura 3 wells were shut down by PRASA because of non-compliance with drinking water
standards. The Maguayo wells were constructed by PRASA to compensate for the shortage. In
1984, an air stripper was installed at the Ponderosa well by PRASA, which removed
contaminants by forcing a stream of air through the water. This process continued until 1985,
when technical problems with the air stripper arose. Approximately 27,600 people live near the
site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater, sediments, and soil are contaminated with various VOCs. People who
accidentally ingest or come into direct contact with the contaminants may be at risk.
November 1 994
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Cleanup Approach
This site is being addressed in two long-term remedial phases focusing on cleanup of
groundwater and the entire site.
Response Action Status
Groundwater: In 1987, the EPA selected a remedy to clean up the groundwater by:
installing individual treatment systems for PRASA wells GE 1, GE 2, and Bajura 3
and discharging the treated effluent into the PRASA distribution system; treating the
Ponderosa well by air stripping and discharging the treated effluent into Honda Creek; shutting
down the Monterrey 2 and G&M private wells and hooking up the affected residents to the
PRASA distribution system; and conducting an investigation to fully assess and evaluate the
source of the contamination. In 1989, EPA modified the 1987 remedy at the urging of the
Environmental Quality Board to discharge the treated water from all the wells to Honda Creek.
Designs for the well treatment systems were approved in early 1992. Construction of the
treatment system at the Ponderosa Well was completed in late 1993 and connection of the G&M
private user to the PRASA distribution system was completed in the fall of 1993. Due to a
change in the plume configuration resulting from a change in groundwater pumping conditions,
the Bajura 3, GE 1 and GE 2 PRASA wells are no longer in appropriate locations to capture the
plume. A modification to the EPA selected remedy,which would require the installation of an
extraction well in a new location, is expected to be issued during March 1994.
Entire Site: A second investigation was initiated in February 1992 by the potentially
responsible parties to determine the potential for the contaminated groundwater plume
to migrate from the present treatment area and the nature and extent of contamination
at the source of the groundwater contamination. Based on the study results, additional
groundwater remedies may be required, as well as clean up of soils and sediments.
Site Facts: General Electric, Motorola, Harman Automotive, The West Company, and the
Puerto Rico Industrial Development Corporation were issued a Unilateral Administrative Order
(UAO) by the EPA in 1989 requiring them to clean up groundwater contamination at the site. A
second UAO was issued by the EPA in August 1990 to the same five potentially responsible
parties to investigate the contamination source and groundwater plume that migrated from the
treatment area.
Environmental Progress
After adding this site to the NPL, the EPA performed preliminary investigations and determined
that no immediate actions were required at the Vega Alta site while long-term groundwater
cleanup activities are being designed and implemented.
November 1994 2 VEGA ALTA PUBLIC SUPPLY WELLS
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ISLAND CHEMICAL
CORP./VIRGIIM ISLAND
CHEMICAL CO
VIRGIN ISLANDS
EPA ID# VID980651095
Site Description
EPA REGION 2
St. Croix
The Island Chemical Corp./Virgin Island Chemical Corp. site is an approximately 3 1/2-acre
facility located in the southwest portion of St. Croix, U.S. Virgin Islands. The area surrounding
the site is mostly commercial; however, the closest resident lives 1/10 mile to the south. An
intermittent stream, River Gut, borders the northern and eastern site boundaries and discharges to
the Caribbean Sea. The site was leased to both Island Chemical Corp. and Virgin Island
Chemical Corp., and has been used for the manufacture of pharmaceutical chemicals, primarily
phenacetin, ethoxyquin, and quinidine. Virgin Island Chemical also produced benzyl acetate,
used in perfumes, flavorings, resins, lacquers, polishes, printing inks, and varnish removers, as
well as benzyl salicylate, used as a perfume fixative, a solvent for synthetic musk, and in
sunscreen lotion and soap odorant. During an investigation of the site in 1984, three areas of
concern were identified including an 8,000-gallon process pit, the associated drainage line from
the pit to River Gut, and contaminated soil at various locations on site. Soil samples indicated
the presence of various organic compounds, including toluene and pyridine. All contaminated
soil detected during the site investigation was reported to have been either removed or treated on
site using biodegradation. Additional investigations in 1985 and 1986 by Resource Conservation
and Recovery Act (RCRA) enforcement staff indicated the presence of phthalates, benzene,
chloroform, and polynuclear aromatic hydrocarbons (PAHs), chromium and zinc. In 1989, the
laboratory/warehouse building was found to contain approximately 400 drums, some extremely
deteriorated; leaking cylinders of chlorine and hydrogen chloride; and over 800 containers of
laboratory reagents that included sodium metal, potassium cyanide, and ethyl ether. In 1991,
results of analyses showed high concentrations of chloroform in groundwater, elevated levels of
various organic and inorganic contaminants in sediments, and pesticides in sediment and soil.
Site Responsibility:
This site will be addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 01/18/94
September 1994
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Threats and Contaminants
zra
The soil is contaminated with phthalates, benzene, chloroform, PAHs, chromium,
zinc, and pesticides. Sediments indicate elevated levels of various organic and
inorganic contaminants, and pesticides. Groundwater is contaminated with
chloroform. The River Gut is an intermittent stream that borders the site and
discharges directly into the Caribbean Sea. Site wastes have been illegally discharged
into this stream throughout the history of the site. Coming into contact with or
ingesting contaminated soil, groundwater, or sediments poses a health risk.
Cleanup Approach
The site is being addressed in two stages: initial actions and a long-term remedial phase focusing
on cleanup of entire site.
Response Action Status
Initial Actions: Between 1989 and 1991, the EPA removed over 250 drums
containing various chemicals, and over 8,000 pounds of lab pack chemicals from the
laboratory/warehouse building. In addition, the EPA conducted a site inspection at
the facility during which groundwater, sediment, and soil samples were collected.
Entire Site: The EPA is planning an investigation of the nature and extent of
contamination at the site. Once this investigation is completed, remedies for final
site cleanup will be selected.
Site Facts: Two separate RCRA enforcement inspections were conducted at the site in
September 1985 and March 1986 to verify the effectiveness of soil remediation and to determine
RCRA compliance. The facility was not found to be in compliance, since it discharged wastes to
the River Gut without a National Pollutant Discharge Elimination System (NPDES) permit.
Environmental Progress
The removal of contaminated materials from the Island Chemical Corp./Virgin Island Chemical
Corp. Site has reduced threats to the public while further studies are being planned.
Site Repository
Not yet established.
September 1994
ISLAND CHEMICAL CORP./VIRGIN
ISLAND CHEMICAL CORP.
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TUTU WELLFIELD
VIRGIN ISLANDS
EPA ID# VID982272569/S
EPA REGION 2
Tutu, eastern central St. Thomas
Site Description
The Tutu Wellfield site, located in a mountainous, semi-rural area, is a plume of contaminated
groundwater covering an area approximately 108 acres in size. This contamination was first
detected when a strong petroleum odor coming from the Tillet Well, a public water supply for
the area, was reported. An investigation conducted by the Virgin Islands Department of Planning
and Natural Resources (VIDPNR) indicated that volatile organic compounds (VOCs) were
contaminating several public, institutional, commercial, and private wells. Water from some of
these wells was transported to other parts of the island. Many contaminated wells, including the
Tillet Well, were subsequently shut down. Potentially responsible parties identified by EPA
include gasoline stations, auto repair stations, a dry cleaner, and a silk screening operation. These
operations contain various possible sources of contamination such as petroleum and waste oil
underground storage tanks, drum storage areas, contaminated catch basins, oil separators, floor
drains, a sump holding tank, a leaching pit, above-ground storage tanks, and an evaporation pit.
These operations also used various toxic materials including solvent-based auto flushes, dry
cleaning fluids, dye strippers, ammonia hydroxide, and mineral spirits. Tutu Wellfield is part of
the Upper Turpentine Run Basin. A stream leading to Turpentine Run is a few hundred feet from
the site; Turpentine Run is approximately 3 miles from Mangrove Lagoon, which is hydraulically
connected to the Caribbean Sea. The Atlantic Ocean is 1 mile from the site. Public and private
wells within 4 miles of the site formerly supplied drinking water to an estimated 1,600 people.
Site Responsibility:
This site is being addressed through
Federal, Territorial and potentially
responsible parties actions.
NPL LISTING HISTORY
Proposed Date: 02/07/92
Threats and Contaminants
Groundwater, including several wells, is contaminated with VOCs such as benzene,
toluene, and trichloroethene (TCE). Contaminants found in the groundwater also were
detected in the soil on the properties of the various potentially responsible parties.
November 1 994
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Cleanup Approach
This site is being addressed in two stages: immediate actions and a long-term remedial phase
focusing on cleanup of the entire site.
Response Action Status
Immediate Actions: After detecting contaminants in groundwater, VIDPNR closed
down Tillet Well, three private wells, and 13 commercial wells in 1987. EPA
followed this action by decontaminating five residential cisterns using emergency
funds, and providing an alternative water supply to these residences while monitoring of the
remaining wells continued. In 1990, under an EPA order, Esso Standard Oil Co., Texaco
Caribbean Inc., and L'Henri Dry Cleaner took over the monitoring program and continued to
provide an alternate water supply to residences affected by groundwater contamination.
^.
Entire Site: In early 1992, Texaco Caribbean Inc. and Esso Standard Oil Company
began conducting site studies to determine the nature and extent of contamination and to
identify cleanup alternatives. These studies are scheduled for completion in the fall of 1995.
Site Facts: VIDPNR issued an Administrative Order to Tutu Service Station and Tutu Esso Car
Care in 1987. This order required the them to investigate the impact that the release of petroleum
from their underground storage tanks had on the surrounding environment. Seven additional
potentially responsible parties were identified later that year. A Unilateral Administrative Order,
issued in 1990 by EPA to L'Henri Dry Cleaner, Esso Standard Oil Co., and Texaco Caribbean
Inc., required them to take over the removal actions initiated by EPA. In early 1992, Texaco
Caribbean Inc. and Esso Standard Oil Co. began conducting sites studies under an Administrative
Order from EPA.
Environmental Progress
Closing contaminated wells and providing safe drinking water to affected residences has reduced
the risk posed to the health and safety of the nearby population while additional site investigations
are being conducted.
November 1994 2 TUTU WELLFIELD
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