&EPA
United States
Environmental Protection
Agency
Solid Waste And
Emergency Response
(5201 G)
EPA/540/R-95/114
PB95-962946
9200.5-743C
May 1995
SUPERFUND:
Progress at
National
Priority
List Sites
UTAH
1995 UPDATE
Printed on Recycled Paper
-------
How to Use the NPL Book
i I
V/
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.
-------
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:
£XXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX XXXXXXXXXXXXX :
. XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX XXXXXX XXXXXXXX \
'- XXX XXXXXXXXXXXXX XX XXXXXX XXXX XXXXX XXXX X XXX ;
xxxxxxx xxx xxxxfei^xxxxx xxxxx xxxxxx xxxxxxxx xxxxxxxx xxxx xxxxxxxxxx :
XXXXXXXXXXXX XXXXXXXXX^ftMtX^X XXX XX XXXXXXXXX XXXXX XXXX XXXX XXXXX XXXXXXX XXXXXXXX
XXXXXXXX XXXXXXXXX XXXX XXXxTftftlitXXXXX XXXXXXXX XXXXX XXXX XXXXX XXX XXX XXXXXX
XXXXXXXXXXXX XX XXXXXXX XXX XXXXX xSSft»fcJtXX XXXXXX XX XXXX XXX XXXXX XXX XXXXX XXX XXXXX
Site Responsibility:
xxxxxx xxx. xxxxx :
XXXXXX XXXXXXXXX XXXXXXXX
XXXXXXXXXXXXX XXXXXXXXX
NPL Listing History
Proposed XXflCWXX
Final. XX/XXOCX
Threats and Contaminants
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX
XXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX
XXXXXXXX XXX XXXXXXXXXXXX XXXXX XXX XXXXXXXXXXXXX XX XXXXXX XXXX
XXX XXXXXXXXXX XXXXXXXX XXXXXXX XXX XXXXXX XXXXXX XXXXX XXXXXX
XXXXXXXX XXXX XXXXXXXXXX XXXXXXXX XXXXXXXXXXXX XXXXXXXXX XXXX X XXX XX XXXXXXXXX
XXXX XXXX XXXXX XXXXXXX XXXXXXXX XXXXXXXX XXXXXXXXX XXXX XXXX XXXXX XXXX
Cleanup Approach
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX XXXXXXXXXXXXX
XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX XXXXXX XXXXXXXX
XXXXXXXXXXXX XXXXX XXX XXXXXXXXXXXXX XX XXXXXX XXXX XXXXX XXXX X XXX XXXXXXXX
Response Action Status
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX :
XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX :
XXXXXXXXXXXX XXXXX XXX XXXXXXXXXXXXX XX XXXXXX XXXX XXXXX XXXX X :
XXXXXXXX XXXXXXX XXX XXXXXX XXXXXX XXXXX XXXXXX XXXXXXXX XXXXXXXX :
XXXXXXXXXX XXXXXXXX XXXXXXXXXX: X XXXXXXXXX XXXX X XXX XX XXXXXXXXX XXXXX XXXX XXXX XXXXX
XXXXXXX XXXXXXXX XXXXXXXX XXXXXXXXX XXXX XXXX XXXXX XXXX XXXXXXXX XXXXX XXXX XXXXX XXX
XXX XXXXXX XXXXXXXXXXXX XX XXXXXXX XXX XXXXXX XX XXXXXX XXXXXXXX XXX ]
Site Facts:
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX
XXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX
XXXXXXXXXXXX XXXXX XXX XXXXXXXXXXXXX XX XXXXXX XXXX XXXXX XXXX X XXX
^^HXXXXXX XXX XXXXXX
Environmental Progress
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX XXXXXXXXXXXXX XXXXXXXXX
XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX XX XXXXXX XXXXXXXX XXX
XXXXXXXXXXXX XXXXX XXX XXXXXXXXXXXXX XX XXXXXX XXXX XXXXX XXXX X XXX XXXXXXXXXX
XXXXXXXX XXXXXXX XXX XXXXXX XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX
Site Repository
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX XXXXXXXXXXXXX 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.
-------
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.
-------
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.
-------
EPA ID
Number Site Name
UT0571724350 HILL AIR FORCE BASE
UTD000826404 KENNECOTT (SOUTH ZONE)
UTD070926811 KENNECOTT TAILINGS (NORTH ZONE)
UTD081834277 MIDVALE SLAG
UT3890090035 MONTICELLO MILL TAILINGS (USDOE)
UTD980667208 MONTICELLO RADIOACTIVELY CONTAMINATED PROPERTIES
UTD980951420 MURRAY SMELTER
UT9210020922 OGDEN DEFENSE DEPOT
UTD093119196 PETROCHEM RECYCLING CORP./EKOTEK PLANT
UTD980718670 PORTLAND CEMENT (KILN DUST 2 & 3)
UTD980952840 RICHARDSON FLAT TAILINGS
UTD980635452 ROSE PARK SLUDGE PIT
UTD980951388 SHARON STEEL CORP. (MIDVALE TAILINGS)
UT3213820894 TOOELE ARMY DEPOT (NORTH AREA)
UTD980667240 UTAH POWER & LIGHT/AMERICAN BARREL CO.
UTD000716399 WASATCH CHEMICAL CO. (LOT 6)
-------
HILL AIR ^
FORCE BAS
UTAH
EPA ID# UT0571724350
EPA REGION 8
Davis and Weber Counties
5 miles south of Ogden
Site Description
The 6,665-acre Hill Air Force Base site is used by the Air Force for the overhaul and
maintenance of aircraft. Several on-base areas have been identified by the Air Force as being
contaminated, including four landfills, three chemical disposal pits, Berman Pond, the Industrial
Wastewater Treatment Plant (IWTP) Sludge Drying Beds, the Fire Training Area, Bamberger
Pond, the Refueling Vehicle Maintenance Facility, the Sodium Hydroxide Tank Leak Area, and
the Toole Army Rail Shop. Industrial and municipal wastes were dumped on base, including
volatile organic chemicals (VOCs), electroplating wastes, sludges from the Industrial Wastewater
Treatment Plant, waste oils, and petroleum fuel products. Approximately 20,000 people work on
Hill Air Force Base, of which about 15,000 are civilian employees. Most of the residences in
the area surrounding the site are connected to the municipal water supply system; however, some
private wells or springs are used for drinking water and irrigation.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 07/01/87
Threats and Contaminants
Groundwater in the disposal and pit areas is contaminated with various VOCs and
heavy metals. A floating product is contaminating groundwater near chemical disposal
pits #1 and #2. Groundwater located near Chemical Disposal Pit #3 contains high
concentrations of VOCs. Surface water located in springs downgradient from
Chemical Disposal Pit #3 is contaminated by VOCs. The Toole Army Rail Shop and
Bamberger Pond areas are contaminated with VOCs. Contaminants are migrating
off-site. Accidental ingestion of or direct contact with contaminated groundwater,
surface water, or soil may pose a health threat.
Cleanup Approach
This site is being addressed in eight long-term remedial phases focusing on cleaning up the
various contaminated site areas.
March 1995
-------
Response Action Status
Landfills #3 and #4, Chemical Disposal Pits #1 and #2, and the Fire
Training Area: In 1984, a clay cap was placed over Landfill #4, a slurry wall was
installed around the upgradient areas of contamination, and a series of extraction wells
were installed. The slurry wall was completed in 1985. In 1986, clay caps were constructed
over Landfill #3 and a portion of the chemical disposal pits. A parking lot was installed over the
Fire Training Area and the chemical disposal pits. A total of about 70 acres have been covered.
Over 50-million gallons of contaminated groundwater were then extracted and treated by the Air
Force. Off-base migration of contaminants has been significantly reduced. Continued studies
into site contamination and the most effective ways to address it are underway, and scheduled to
be completed in 1995.
Chemical Disposal Pit #3: The Air Force began a study to determine the nature
and extent of contamination and to identify alternatives for cleanup in 1991. Interim
measures were identified to address liquid chemical wastes remaining in the pit,
including the installation of an extraction and treatment system to address dense non-aqueous
phases liquids (DNAPL). Construction of the system is complete, and the system continues to
operate. Final cleanup remedies for the disposal pit area are expected to be chosen in early
1996.
IWTP Sludge Drying Beds, the Sodium Hydroxide Tank Leak Area,
Berman Pond, and the Refueling Vehicle Maintenance Facility: The
investigation into site contamination and methods to effectively address these areas
was completed in 1992, and interim cleanup measures were identified. Berman Pond has been
filled and graded, and a clay cap was installed over the area. The unlined IWTP Sludge Drying
Beds were lined with asphalt and then concrete. Final cleanup remedies are expected to be
selected in 1995.
Landfills #1 and #2, North Gate Dump: Investigative work into site
contamination and the most effective methods to address Landfills #1 and #2 was
completed in 1994. The EPA selected a remedy in the summer of 1994 that includes
capping the landfill and pumping and treating the groundwater. Design of the remedy is
currently underway and is expected to be completed in 1995.
Toole Army Rail Shop and Bamberger Pond: The investigation into
contamination and the most effective methods to address these areas was started by the
Air Force in 1989. This investigation is scheduled for completion in early 1996.
Missile Maintenance Complex: An investigation into the nature and extent of
contamination at the Missile Maintenance Complex began in the fall of 1992. VOC
contamination was found in the soils, as well as TCE contamination in the
groundwater plume, which was spreading off base. The investigation is expected to be completed
in late 1996, at which time cleanup remedies will be selected.
Building 225: The EPA determined in 1995 that the soil beneath Building 225 is
contaminated. Cleanup measure are expected to be selected in early 1996.
March 1995 2 HILL AIR FORCE BASE
-------
Groundwater: The groundwater beneath the South Area Industrial Complex was
found to be contaminated. The EPA discovered that the plumes had merged, and the
contamination is coming from other source areas. The investigation is continuing to
determine the source of groundwater contamination.
Site Facts: Hill Air Force Base is participating in the Installation Restoration Program, a
specially funded program established by the Department of Defense (DOD) in 1978 to identify,
investigate, and control the migration os hazardous contaminants at military and other DOD
facilities. In 1991, the EPA and Hill Air Force Base signed a Federal Facilities Agreement,
requiring the Air Force to conduct investigations at the site. Ongoing site characterization work
may identify additional areas of the site that require cleanup.
Environmental Progress
Interim actions have been performed at several site areas. The installation of a cap, a slurry
wall, and extraction wells have reduced the migration of contaminants from the Hill Air Force
Base while further studies and cleanup activities are taking place. In addition, the Air Force has
provided alternate water supplies to affected residences while the nature of groundwater
contamination is being characterized.
Site Repository
Davis County Library, 155 North Wasatch Drive, Layton UT 84041
HILL AIR FORCE BASE
March 1995
-------
KENNECOTT
BINGHAM/
SOUTH ZONE
UTAH
EPA ID# UTD000826404
EPA REGION 8
Salt Lake
County
Site Description
The Kennecott Bingham/South Zone site encompasses the Bingham Mining District in the
Oquirrh Mountains of Utah. Mining activities began in the area in the 1860s. Smaller
companies mined gold, silver, and copper, and erected mills and smelters in the area. Wastes
typically were deposited in the creek or adjacent to the creek where they eroded and deposited
downstream. A large open-pit copper mine is currently operating at the site. Overburden from
the mine is placed on huge waste rock dumps. A portion of the dumps is used for active
leaching operations. The leach water collection system leaked, resulting in a plume of
contaminated groundwater. The site is adjacent to several Salt Lake Valley communities, with a
combined population of 70,000.
Site Responsibility:
The site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 01/18/94
Threats and Contaminants
Mining wastes with elevated levels of lead and arsenic have been washed downstream
and deposited in the floodplain of Bingham Creek. Neighborhoods have been built on
the floodplain, and in some cases, on historic channels. Leach water escaping the
collection system has contaminated the principal aquifer underlying the southwestern
Salt Lake Valley. A small part of the groundwater plume near the contaminating
sources is acidic and metal-bearing. Further out, the plume consists of elevated levels
of sulfates. Potential health risks are associated with direct contract and ingestion of
contaminated soils and groundwater. Well drilling permits have been suspended in the
area.
March 1995
-------
Cleanup Approach
This site is being addressed through a number of early actions at various waste locations and a
long-term remedial action focusing on cleaning up groundwater contamination.
Response Action Status
Early Actions: Shortly after discovery of the waste deposits downstream of the
mining district, the EPA initiated removal actions at several locations including the
Bingham Creek residential neighborhoods, the Bingham Creek Channel, the Large
Bingham Reservoir, the Butterfield Mine waste rock, the Lark tailings and waste rock, the South
Jordan Evaporation Ponds, and the Anaconda tailings. In 1991, residential yards in Bingham
Creek with surface soils containing chemical concentrations posing an immediate threat were
removed to a repository, soils were replaced, and the yards were revegetated. Cleanup of yards
posing a long-term threat will be addressed in 1995, as necessary. To prevent further migration
of mining wastes downstream, the mining wastes from Bingham Creek channel were cleaned out
and placed in repositories. This work was finished in 1994. In 1991, the sludges, tailings, and
underlying soils from the Large Bingham Reservoir were removed. The new Bingham Reservoir
was then lined. This work is scheduled to be completed in 1995. Waste rock produced by the
mining operations at the Butterfield Mine was removed from Butterfield Creek and placed in a
repository. The work was completed in 1992. Tailings and waste rock from mining and milling
operations near the former townsite of Lark were removed; acid-generating materials were placed
in the main waste dumps, and tailings with elevated levels of lead and arsenic were sent to a
repository. The entire Lark town site area was covered with topsoil and revegetated. This work
was completed in 1994. The South Jordan Evaporation Ponds are a potential source of sulfates
that leached to the groundwater. In 1994, some materials from these ponds were removed and
others consolidated and capped. Revegetation will proceed in 1995. The Anaconda Tailings
deposit is being capped to prevent further downstream migration of contaminants. This work is
expected to be completed in 1995.
Groundwater: The potentially responsible party conducted a feasibility study
between 1992 and 1993 to investigate options for addressing groundwater. A full-
scale investigation began in 1995, and a remedy is expected to be selected in 1998.
In addition, the potentially responsible parties, the EPA, and the State of Utah have been
conducting surveys to determine the location of historic facilities to determine if wastes still
remain in the area and how far these wastes may have migrated from the site.
Site Facts: In 1991, a potentially responsible party agreed under an Administrative Order on
Consent to remove the waste rock from the Butterfield Mine. In 1993, one potentially
responsible party began to cap the Anaconda tailings deposit under a Unilateral Order.
March 1995 2 KENNECOTT BINGHAM/SOUTH ZONE
-------
Environmental Progress
Immediate threats to human health and the environment have been or are being addressed,
protecting the public and the environment while investigations into the groundwater contamination
are underway.
KENNECOTT BINGHAM/SOUTH ZONE
March 1995
-------
KENNECOTT
TAILINGS/NORTH
ZONE
UTAH
EPA ID# UTD070926811
EPA REGION 8
Salt Lake County
Site Description
The Kennecott North Zone site encompasses an industrial area at the northern end of the Oquirrh
Mountains on the shores of the Great Salt Lake. The area has been used for mineral processing
since 1906. Current and former facilities include mills for grinding ores, concentrators for
separating minerals from the ore by flotation or leaching, smelters, refineries, and associated
storage facilities and waste impoundments. Adjacent to the site is the unincorporated community
of Magna, with an estimated population of 15,000 and growing. There is substantial acreage of
wetlands on and near the site.
Site Responsibility:
The site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 01/18/94
Threats and Contaminants
The wastes produced by the various facilities contain several hazardous substances
including metals and selenium. Early smelter emissions devastated the vegetation near
the smelter and dusts from the tailings pond were largely uncontrolled until recently.
Wastes deposited in unlined impoundments and spills associated with several facilities
have caused metal-bearing groundwater contamination. Potential health risks may
exist for those using private wells, or those who ingest soils contaminated with lead
and arsenic. Wetlands on and near the site are threatened.
Cleanup Approach
This site is currently being addressed in two stages: early actions and a long-term remedial
phases focusing on cleanup of the wastewater treatment plant sludge pond.
March 1995
-------
Response Action Status
Early Actions: The potentially responsible party has been cleaning up surface
contamination found during the process of modernizing the smelter and refinery.
The EPA has removed relic flue dust deposits near the smelter and disposed of them
in unlined ponds. Approximately 1 million cubic yards have been removed.
Water Treatment Plant Sludge Ponds: As a result of an investigation completed
in 1994, the EPA determined that the ponds contain the sludges produced by
treatment of process waters from the refinery and smelter, as well as high levels of
arsenic and selenium. The state is assessing off-site contamination. The potentially responsible
party is evaluating possible cleanup actions for the sludge pond sediments and phosphogypsum
tailings.
Environmental Progress
Since EPA's involvement at the site began in 1991, relic flue dust deposits near the smelter have
been removed, and several studies have been conducted to determine the nature and volume of
remaining wastes. The site is not accessible to the public which protects the public from
exposure while cleanup activities are being planned.
March 1995
KENNECOTT TAILINGS/NORTH ZONE
-------
MIDVALE SLA
UTAH
EPA ID# UTD08183427
EPA REGION 8
Salt Lake County
Midvale
Site Description
The 530-acre Midvale Slag site is a former copper and lead smelting facility. The Midvale
Smelter originally was constructed on this site in 1902 as a copper plant. Over the years, the
plant was changed to a lead facility, producing gold-lead-silver bullion. From 1918 to 1928,
approximately 400,000 tons of lead were produced. The smelter is no longer in existence;
however, large piles of slag and other smelter wastes remain on site. The operators of the site
processed the slag for use as sandblasting and railroad bed material. Operations on this site
were halted by the owners in late July 1992. There are 21/2 million tons of slag containing
lead, arsenic, and cadmium present on site. Access to the site currently is restricted by fences.
A clay berm has been constructed to prevent storm water runoff from the site into the bordering
Jordan River. There are approximately 1,500 people living within 1/4 mile of the site. The
contaminated shallow aquifer on site has been reported to discharge into the Jordan River at some
locations. Public and municipal wells located near the site are used for domestic purposes; but
these wells do not seem to be affected by site contamination.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 06/10/86
Final Date: 02/11/91
Threats and Contaminants
Groundwater and sediments are contaminated with heavy metals including arsenic,
cadmium, lead, and chromium. On-site soils are contaminated with heavy metals,
including cadmium, lead, arsenic and chromium. Explosives found on the site posed a
potential threat to on-site workers. The Jordan River is potentially contaminated from
runoff from the site and ground water discharge. Potential health threats include
drinking contaminated groundwater and surface water and coming into direct contact
with or ingesting contaminated soil.
March 1995
-------
Cleanup Approach
This site is being address in three stages: immediate actions and two long-term remedial phase
focusing on cleanup of the Northern and Southern Zones.
Response Action Status
Immediate Actions: In 1990, the EPA performed initial site cleanup actions to
address immediate threats at the site. Abandoned chemicals found in an assay lab
were overpacked and removed, and approximately 20 pounds of explosives were
detonated. Additionally, the site was fenced to prevent public access. The EPA also plans to
stabilize/solidify the mixed smelter waste located in the Southern Zone, including bag house or
flu dust, in the spring of 1995.
Northern Zone: The EPA began a study into the nature and extent of contamination
at the site in 1991. The investigation will define the contaminants of concern
and will recommend alternatives for final cleanup in the residential parts of the area.
The final Engineering Evaluation/Cost Analysis (EE/CA) reports were completed in mid-1994.
A proposed plan describing the preferred remedy was released to the public for comment in July
of 1994. The EPA anticipates selecting a final remedy for the residential area of the Northern
Zone in the spring of 1995 that includes removing some soil and constructing a cap over
approximately 30 acres. The remaining part of the area, which is undeveloped land, was capped
when a highway was built. No further action is anticipated for this part of the Northern Zone.
Southern Zone: An investigation into the nature and extent of contamination located
in the Southern Zone began in 1989. Rubble from the abandoned smelter and piles of
slag produced by the smelter have caused high levels of arsenic contamination in the
soil. The investigation will determine the methods for cleaning up approximately 21/2 million
cubic yards of contaminated slag and determine whether the groundwater has been affected by
contamination.
Site Facts: The Midvale Slag site is adjacent to the Sharon Steel site, another site on
the NPL.
Environmental Progress
Removal of explosives and abandoned chemicals at the Midvale Slag site and fencing the site
have reduced the threat to human health while investigations are underway and cleanup activities
are being planned.
March 1995 2 MIDVALE SLAG
-------
MONTICELLO M
TAILINGS (DOE
UTAH
EPA ID# UT3890090035
EPA REGION 8
San Juan County
City of Monticello
Other Names:
AEC Mill Site
Monticello Remedial Action Project
Site Description
The Monticello Mill Tailings site lies in the Montezuma Creek Valley, east of the Abajo
Mountains. The inactive ore milling facility, on 78 acres of land, is bordered by the City of
Monticello, with a population 2,200, and private lands. Approximately 11 acres of the site were
the former processing mill and administrative area, and the other 67 acres constituted the mill-
tailings impoundment area, which contains an estimated 21A million cubic yards of tailings and
contaminated soil. The former ore-buying stations and areas contaminated by wind and
waterborne particulate material and tailings cover another 300 acres. These areas, known as the
Peripheral Properties, contain an estimated 300,000 cubic yards of contaminated materials. The
mill was constructed by the Vanadium Corporation of America in 1942 with funds from the
Defense Plant Corporation. Initially, vanadium was produced but, in 1944, the mill began
production of a uranium/vanadium sludge for the Manhattan Engineer District. In 1948, the
Atomic Energy Commission (AEC) bought the site. It is estimated that approximately 900,000
tons of ore were processed at the site. Mill operations were terminated in 1960 and, in 1961 the
AEC stabilized the tailings piles. In 1964, the mill was dismantled. The City of Monticello has
its own water system, supplied by water from springs located on the flanks of the Abajo
Mountains. The domestic water source for those people living outside the city limits is
groundwater drawn from wells in the Burro Canyon Formation. There is no known
contamination of the domestic water supplies attributable to contamination from the Millsite.
Site Responsibility:
The site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 07/14/89
Final Date: 11/21/89
Threats and Contaminants
The groundwater and soil are contaminated with uranium, as well as its radioactive
decay products, thorium-230, radium-226, radon-222, and heavy metals from tailings
deposited on the site. Waste materials are in contact with the groundwater. Exposure to
uranium through contact with contaminated soil, groundwater, and airborne
contaminated dust may be a potential threat to the health of individuals in the vicinity
of the site.
March 1995
-------
Cleanup Approach
The site is being addressed in three long-term remedial phases focusing on cleanup of the tailings
piles and former Millsite, the peripheral properties, and the surface water and groundwater.
Response Action Status
Tailings Piles and Former Mill Site: In 1990, the Department of Energy (DOE)
completed an investigation of contamination in the tailings piles and the Millsite. The
selected remedy includes removing approximately 21/2 million cubic yards of
tailings, ore, and process-related material from the flood plain of Montezuma Creek. The remedy
also proposed that a repository be built on land immediately south of the mill site. During design
of the remedy, it was determined that the proposed repository design would not meet applicable
groundwater protection standards. DOE is preparing a new design. It is anticipated that
excavation of the on-site repository will begin in late 1995, and that the placement of tailings into
the repository will occur in 1997 and 1998. Reclamation of the mill-site is expected to occur in
1999. When cleanup activities are completed, the Millsite and the repository area will be
re vegetated.
Peripheral Properties: In 1990, an investigation of the contamination at the
peripheral properties was completed. Twenty-six peripheral properties covering in
excess of 350 acres have been identified. The remedy involves excavating
approximately 300,000 cubic yards of tailings, moving them to the repository, and revegetating
the area after the tailings are removed. Institutional controls, including limiting access and future
land uses are being considered for peripheral properties where contamination may be left on site.
Construction on a portion of the site is underway and cleanup activities are expected to be
completed in 1998.
Surface Water and Groundwater: The DOE is conducting an investigation to
determine the nature and extent of contamination in the surface water and
groundwater. Completion of this investigation is not anticipated until the cleanup of
the contaminated source materials at the tailing piles is underway. Following completion of an
investigation and technology feasibility study, a remedy will be selected that will address surface-
and groundwater contamination, as well as tailings contamination in upper and lower Montezuma
Creek Canyon.
Environmental Progress
The EPA has determined that the site does not pose an immediate threat to the surrounding
community or the environment while cleanup activities and further investigations are taking place.
March 1995 2 MONTICELLO MILL TAILINGS (DOE)
-------
MONTICELLO
RADIOACTIVEUY5
CONTAMINATpr
PROPERTIES
UTAH L
EPA ID# UTD980667208
EPA REGION 8
San Juan County
Monticello
Other Names:
onticello Remedial Action Project
Monticello Vicinity Properties
Site Description
The Monticello Radioactively Contaminated Properties consist of private and commercial
properties in the City of Monticello, covering approximately 4 square miles. An estimated 410
residences have been contaminated with radioactive mill wastes from ore processing operations
near the City. During World War II, the Federal government established an ore processing mill
to produce vanadium, a steel hardener, for the war effort. Vanadium is not radioactive itself, but
it is found in the same ore with uranium and radium; therefore, the processing wastes contain
significant radioactivity. Soon after its construction, the mill began production of a
uranium/vanadium sludge for the Manhattan Engineer District. Uranium production continued
until 1960, when the plant was closed and dismantled. Contaminated dust from the mill tailings
piles has been blown into the City of Monticello. Tailings from the Mill site have been used as
construction material, backfill, and as sand mix in concrete. These uses have resulted in the
radioactive contamination of numerous properties within Monticello. Approximately 2,200
people live in the City of Monticello. The Mill site is located immediately south of the City in
the flood plain of Montezuma Creek.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
Threats and Contaminants
Soil is contaminated with uranium. People who are exposed to the radioactive
materials may suffer adverse health effects. Inhalation of radon-222 or direct contact
with radionucleotides in the tailings may be harmful to human health. There is no
contamination of the domestic water supply.
March 1995
-------
Cleanup Approach
The site is being addressed in several stages including long-term remedial phases focusing on
cleanup of the entire site and the vicinity properties.
Response Action Status
Entire Site: In 1989, the EPA selected a remedy to clean-up the radioactive
properties by excavating the contaminated tailings, soil, and construction material
from residential properties and temporarily disposing of the material at the Monticello
Mill Tailings site. In 1984, the EPA cleaned up two of the most heavily contaminated homes.
Since 1984, the Department of Energy (DOE) has been systematically cleaning up the remaining
properties. Three families were temporarily relocated while their properties were being cleaned
up. Five areas have been identified: NPL Properties, Inclusion Properties, Disputed Material
Properties, Non-Rad Waste Properties, and Hall's Ditch P/operties. NPL Properties includes the
107 original properties that were identified during the designation and inclusion of the site on the
National Priorities List. To date, cleanup actions have been completed at 101 of these properties.
Inclusion Properties includes 255 properties that were identified since the Federal Facility
Agreement with the DOE to address site contamination was signed. Cleanup of these properties
was initiated in 1991 and is expected to require four to five years to complete. Cleanup actions
have been completed at 191 of these properties. Disputed Material Properties includes 39
properties that are contaminated with material that DOE alleges did not come from the Monticello
Mill Tailings site. Cleanup actions have been completed at 10 properties. Non-Rad Waste
Properties includes 6 properties containing hazardous waste in addition to the radiological
contamination. Hall's Ditch Properties include 8 properties located along Hall's Ditch. Cleanup
action of these properties will be completed during the last phase of the site cleanup due to the
proximity to the Mill site.
Site Facts: The Department of Energy (DOE) has taken responsibility for site cleanup. This
site is being addressed under a Federal Facility Agreement, although the contaminated properties
are not on federally-owned lands. In 1980, the DOE included the Monticello Remedial Action
Project, which encompasses the Monticello Mill Tailings Site and the Monticello Vicinity
Properties, into the Surplus Facility Management Program. This program was designed to
prevent or minimize potential health hazards that result from exposure to radiation emanating
from uranium mill tailings and contaminated structures in the vicinity of such sites, or "vicinity
properties."
Environmental Progress
The DOE began cleanup activities in 1984 and, to date, approximately 315 of an estimated 410
properties have been cleaned up. Additional cleanup activities are ongoing.
March 1995 2 MONTICELLO RADIOACTIVELY
CONTAMINATED PROPERTIES
-------
MURRAY SMELTE
UTAH
EPA ID# UTD980951420
EPA REGION 8
Murray County
Site Description
The Murray Smelter site is an abandoned lead-smelting facility constructed in 1902 by the
American Smelting and Refining Company (ASARCO). During the smelter's operation,
contaminants were emitted from smoke stacks, and contaminated dust was blown over the site
area; slag material has been documented in soil in nearly all directions from the site. When the
Murray Smelter ceased operations in 1949, approximately 500,000 tons of slag containing heavy
metals were left behind. A significant amount of slag was removed from the site and remaining
slag has been used for railroad ballast, road base, parking lot gravel, and fill in several areas
surrounding the property. The slag also has been found near Little Cottonwood Creek, which
runs along the north side of the site. Soil in two nearby residential areas, the Doc and Del and
Grandview mobile home parks, is contaminated with unsafe levels of metals, including arsenic,
barium, antimony, cadmium, lead, mercury, selenium, silver, thallium, and zinc. Currently,
access to the site is not restricted, but the property has been graded and covered with soil. The
surrounding area has been built up over the years to include the two mobile home parks, each
with approximately 45 residents, and a high school which enrolls about 1,200 students. The site
is currently occupied by a number of businesses, including WR White Company, Buehner
Cement, Monroe, Metro West Cement, and Ash Group Cement. Sixty-two municipal drinking
water wells, serving approximately 140,000 people, have been identified within 4 miles of the
site, although no wells are known to be contaminated from the site.
Site Responsibility:
The site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 01/18/94
March 1995
-------
Threats and Contaminants
Preliminary information indicates that soil is contaminated with metals including
antimony, arsenic, barium, cadmium, lead, mercury, selenium, silver, thallium, and
zinc. The EPA has determined that arsenic and cadmium concentrations on the
residential property are above safe levels for human contact. Nearby surface waters
may become contaminated via site runoff. Since the smelter operations are believed
to have created a significant amount of arsenic wastes, it is likely that arsenic has
contaminated the shallow groundwater system. Potential health threats include
touching or ingesting contaminated groundwater, surface water, soils, slag, or other
smelter wastes.
Cleanup Approach
The site is being addressed in a long-term remedial action focused on the cleanup of the entire
site.
Response Action Status
Immediate Action: The EPA and the potentially responsible party, ASARCO, are
planning an investigation into the nature and extent of contamination at the site.
Results of this study will lead to the selection of final cleanup remedies. Both EPA
and the State intend to proceed as quickly as possible in characterizing the site and selecting
appropriate cleanup remedies.
Environmental Progress
The EPA has determined that no immediate actions are necessary to protect the public or the
environment while site studies are being planned.
Site Repository
US EPA Region 8 Superfund Records Room, 999 18th Street, Suite 500, Denver, CO, 80202
March 1995 2 MURRAY SMELTER
-------
OGDEN DEFENS
DEPOT
UTAH
EPA ID# UT9210020922
Site Description
EPA REGION 8
Weber County
Ogden, Utah
Other Names:
Defense Distribution Depot
Ogden Utah (DDOU)
and
Defense Depot Ogden
The Ogden Defense Depot (DDOU) site is located in the northern reaches of the City of Ogden,
Weber County, Utah. The 1,000-acre site is a major supply distribution center for the U.S.
Defense Logistics Agency. Unknown quantities of hazardous wastes, including methyl bromide
and mustard gas, were stored and may have been buried on site during the 1940s and 1950s.
Several waste disposal areas have been identified on the property currently or formerly controlled
by DDOU. The site is located within the city limits; the population center is located
approximately 3 miles from the site. The distance from the site to the nearest off-base residence
is about 1A mile to the west. The site is located above the Weber Delta Aquifer, which consists of
shallow and deep zones. Pineview Reservoir supplies the City of Ogden with drinking water and
is located 10 miles east of the site. Streams and a creek are found on the site.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 07/01/87
Threats and Contaminants
Sampling of on-site groundwater has identified various volatile organic compounds
(VOCs) including trichloroethane, vinyl chloride, and cis-l,2-dichloroethane. Soil is
contaminated with VOCs, metals, dioxins, furans, PCBs, chemical warfare agents, and
the pesticide chlordane. Access to the site is restricted, thereby reducing the potential
for contact with contaminants. Individuals accidentally ingesting or coming in direct
contact with the contaminated groundwater or soils may be at risk.
Cleanup Approach
The site is being addressed in six stages: an immediate action and five long-term remedial phases
focusing on cleanup of the french drain at the herbicide/pesticide mixing area, three waste burial
sites (burial sites 1, 4, 3), and surface water.
March 1995
-------
Response Action Status
Immediate Removal Action: During soil excavations in 1988, a team from the
Technical Escort and Disposal Detachment at Dugway Proving Ground excavated
Burial Site #3. During the soil excavation, vials were recovered and identified as
items from both the chemical agent identification and training sets. Defused riot control grenades
also were recovered and disposed of safely.
French Drain: The EPA selected a remedy for cleaning up groundwater at the french
drain in the herbicide/pesticide mixing area that includes extracting contaminated
groundwater, treating the extracted groundwater with an air stripper, and reinjecting
the treated groundwater. All contaminated soils have been excavated and incinerated off site.
The groundwater treatment system became operational in October 1992, and the contaminated
soils excavation was completed in December 1994.
Burial Site #1: In 1992, the EPA selected a pump and treat system using an air
stripper as the remedy for groundwater contamination and excavation for the Plain
City Canal soil at burial site #1. Startup of the pump and treat system began in
December 1994. Cleanup of the soil was completed in the fall of 1994.
Burial Site #3: In 1992, the EPA selected a remedy to address the remaining soil
contamination at Burial Site #3. The remedy includes excavation and
disposal/incineration and is expected to be completed by the summer of 1995.
Burial Site #4: In 1992, the EPA selected a pump and treat system using an air
stripper to address groundwater contamination and excavation to address contaminated
soils at Burial Site #4. Cleanup activities are underway and are expected to be
completed in 1997.
Surface Water Investigation: Surface water samples were taken in 1993. A draft
risk assessment report has been submitted for review. A determination as to whether
significant risks exist to human health or the environment from surface water is
expected to be made in 1995.
Environmental Progress
By excavating and removing contaminated soil, vials, and the defused grenades from Burial Site
#3 at the Ogden Defense Depot site, the potential for exposure to hazardous materials has been
reduced while cleanup and additional studies are underway.
March 1995 2 OGDEN DEFENSE DEPOT
-------
PETROCHEM
RECYCLING
CORP./EKOTEK INC
UTAH
EPA ID# UTD093119196
EPA REGION 8
Salt Lake County
Site Description
The 61A acre Petrochem Recycling Corp./Ekotek Inc. site is bordered on the north by a junkyard,
on the east and west by industrial and commercial properties, and on the south by a residential
community of approximately 50 homes. The facility was initially operated as an oil refinery
from 1953 to 1978. In 1978, it was converted into a hazardous waste storage/treatment and
petroleum recycling facility which operated until February 1988. Sources of contamination at the
site include approximately 60 above-ground tanks, 1,200 drums and smaller containers, three
surface impoundments, an underground drain field, numerous piles and pits of waste material,
underground tanks, incineration furnaces, and contaminated soil. Groundwater below the facility
is unconfined and hydraulically connected to aquifers underlying the Salt Lake Valley. Public
wells within 4 miles of the site draw water from these aquifers and serve an estimated 28,000
people. Additional wells within 4 miles of the site are used by commercial food producers. In
November 1990, contaminants were detected in the air, threatening an estimated 11,400 people
who live and work within a mile of the site. The habitat of the two endangered species, the
peregrine falcon and the bald eagle, and wetlands are located within 3 miles of the site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parries' actions.
IMPL LISTING HISTORY
Proposed Date: 07/29/91
Final Date: 10/14/92
March 1995
-------
Threats and Contaminants
Releases of chlorinated solvents to the shallow unconfined aquifer and volatile and
semi-volatile organic compounds (VOCs) to the air have been observed. Other on-site
contaminants include poly nuclear aromatic hydrocarbons (PAHs), phthalates,
pesticides, polychlorinated biphenyls (PCBs), dioxin, furans, and heavy metals such as
arsenic, chromium, lead and mercury. On-site workers, urban residents and
trespassers could be adversely affected through direct contact with the soils or
sediments, by drinking contaminated ground water, or inhaling contaminated air. A
wetland and a habitat for the peregrine falcon and the bald eagle also may be
threatened.
Cleanup Approach
This site is being addressed in two stages: initial actions and a long-term remedial phase focusing
on cleanup of the entire site.
Response Action Status
Initial Actions: In 1988, the EPA initiated an emergency removal action to address
the release of hazardous substances from the site. The EPA's activities included the
stabilization and containment of hazardous wastes at the site and maintenance of site
security. Since that time, the EPA has been involved in the investigation and assessment of site
conditions and negotiations with a potentially responsibly parties' committee. The EPA has
provided oversight of the emergency surface removal actions conducted by the committee. These
actions have included extensive sampling and evaluation of the extent of contamination at the site
including samples taken from neighborhood yards, construction of a perimeter fence, and 24-hour
site security. Also, extensive sampling was conducted to categorize the types of wastes found at
the site and to delineate the extent of contamination, treatment, and subsequent disposal of over
500,000 gallons of hazardous liquids and contaminated storm water, disposal of all drums, and
removal of debris and sludges found at the site.
Entire Site: In mid-1992, several of the parties potentially responsible for site
contamination initiated an extensive investigation into the nature and extent of
hazardous materials present at the site. The investigation was completed in the
summer of 1994, and the feasibility study is expected to be completed in 1995. The final
remedies to clean up the site will be determined based on the results of the cleanup investigation.
March 1995 2 PETROCHEM RECYCLING CORP./
EKOTEK INC.
-------
Site Facts: A Notice of Violation was filed by the Utah Bureau of Solid and Hazardous Waste
and the Bureau of Air Quality to Petrochem Recycling in 1988. Operations were shut down as a
result of this notice. General and Special Notice Letters regarding potential liability for site
contamination were mailed individually to 470 potentially responsible parties. A committee of
potentially responsible parties, which was formed during the initial actions, has developed one of
the first potentially responsible party-generated offers for settlement with smaller contributors (de
minimis parties) at the site. In July 1992, an Administrative Order on Consent (AOC) was issued
by the EPA, requiring potentially responsible parties to perform a site investigation.
Environmental Progress
The removal of tanks, drums, and chemicals, along with prevention of contaminated surface
water run-off and security provisions, has reduced the potential for exposure to contaminated
materials at the Petrochem Recycling Corp./Ekotek Inc. site while investigations are taking place.
Site Repository
U.S. EPA - Region VIII
Superfund Records Center
999 18th Street, Suite 500
Denver, CO 80202-2466
(303) 293-1807
Special Collections Department
Marriott Library
University of Utah
Salt Lake City, UT
(801) 581-8863
PETROCHEM RECYCLING CORP./
EKOTEK INC.
March 1995
-------
PORTLAND CEMENT
(KILN DUST #2 &
UTAH
EPA ID# UTD980718670
Site Description
EPA REGION 8
Salt Lake County
Salt Lake City
Other Names:
Lone Star Industries
The Portland Cement (Kiln Dust #2 & #3) site consists of three disposal areas located on
71 acres that were used for the disposal of spent cement kiln dust and old kiln chromate bricks.
The cement kiln dust and bricks are stored in piles on the surface, exposing them to transport by
wind and water. The company disposed of cement kiln dust and old kiln chromate bricks at the
site until 1983. The dust, an alkaline by-product of cement manufacturing collected in baghouses
from the kiln stacks, contains elevated concentrations of lead. The old kiln bricks contain
elevated levels of heavy metals. Commercial and industrialized areas are located around the site.
Four homes are located on the western side of the site. The Jordan River Surplus Canal and City
Drain are surface water bodies found adjacent to the site. A large residential area with two
elementary schools lies east of the site. Up to 12,000 people live within a mile of the site.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
Threats and Contaminants
m
Groundwater and the nearby surface water are contaminated with heavy metals
including arsenic, cadmium, chromium, lead, and molybdenum, and have high pH
levels. Inhalation of the extremely fine dust particles may cause potential health threats
to area residents and workers cleaning up the site. Potential health risks may exist for
individuals touching or drinking the contaminated groundwater. Wildlife in the area
also may be threatened by the contaminants. Nearby surface waters, the Surplus Canal
and City Drain, and the upper aquifer may be threatened by the site contamination.
March 1995
-------
Cleanup Approach
The site is being addressed in three stages: immediate actions and two long-term remedial phases
focusing on the contaminated cement kiln dust, chromate bricks, soil, and groundwater.
Response Action Status
Immediate Actions: The site was fenced by the potentially responsible parties to
prevent access to contaminated materials. A dust suppressant is applied on an
as-needed basis to prevent dust from blowing off the site.
Cement Kiln Dust, Chromate Bricks, and Contaminated Soils: The EPA
selected a cleanup remedy for the cement kiln dust in 1990 and for the chromate
bricks and contaminated soils underlying the cement kiln dust in 1991. The remedies
entail removing and shipping the cement kiln dust and contaminated soils off-site to an EPA and
State approved landfill. In addition, the chromate bricks will be treated to reduce their toxicity
and also sent to an off-site landfill. The State completed design of the remedy in 1994 and is
currently in the process of procuring a contractor to perform clean-up activities. Construction of
the cleanup remedies is expected to start in the summer of 1995.
Groundwater: In 1994, the State began a process to evaluate cleanup alternatives
for contaminated groundwater at the site. The EPA and the State plan to decide on a
groundwater cleanup approach in late 1995.
Site Facts: The primary potentially responsible party at the site, Lone Star Industries, recently
agreed to a cash settlement to help pay for the cost of cleanup at the site.
Environmental Progress
Actions taken to fence the site and apply a dust suppressant to the site surface help prevent
possible contact with contamination both on and off site at the Portland Cement site. These
actions also remove any immediate threat to the surrounding community or the environment while
investigations continue and cleanup actions are being planned.
March 1995
PORTLAND CEMENT (KILN DUST #2 & #3)
-------
RICHARDSON FL
TAILINGS
UTAH
EPA ID# UTD980952840
Site Description
EPA REGION 8
Summit County
11/2 miles north of Park City
The Richardson Flat Tailings site covers approximately 160 acres in a valley located ll/2 miles
northeast of Park City, Summit County, Utah. One source of hazardous substances on the site is
a tailings dam and associated tailings materials that came from the Keetley Ontario Mine and
other metal mining operations currently owned by United Park City Mines (UPCM). The most
recent use of the area for tailings disposal was from 1975 to 1981, when UPCM leased its mining
properties to either Park City Ventures or Noranda Mining, Inc. The two companies constructed
and operated milling facilities on UPCM properties. A second contamination source is a 6-acre
flood plains tailing pile immediately west of the tailings pond on the banks of Silver Creek.
Historical aerial photos show that the pile was in existence as early as 1953. Between 1989 and
1990, the EPA and the State observed tailings slumping into an on-site diversion ditch and Silver
Creek. Tests conducted in 1985 and 1989 determined that the tailings contain arsenic, cadmium,
copper, lead, magnesium, mercury, silver, zinc, calcium, and sodium. High-volume air sampling
at the site in 1986 documented that arsenic, cadmium, lead, and zinc were released to the air. An
estimated 4,500 people live within 4 miles of the site.
Site Responsibility:
This site is currently being addressed
through Federal actions.
NPL LISTING HISTORY
Proposed Date: 02/07/92
Threats and Contaminants
Off-site surface water contains arsenic, cooper and lead. The tailings piles contain
heavy metals including arsenic, cadmium, copper, lead, magnesium, mercury, silver,
and zinc, as well as calcium, and sodium. People may be at risk from direct contact
with contaminants from the site or inhaling dust particles contaminated with site-
related chemicals. The State classifies Silver Creek as a cold water fishery. Wetlands
border the creek and diversion ditch. Water from the creek is diverted to irrigate
approximately 300 acres of pastureland.
March 1995
-------
Cleanup Approach
This site is being addressed in a long-term remedial phase directed at cleanup of the entire site.
Response Action Status
Entire Site: The EPA is currently conducting an investigation into the nature and
extent of site contamination. A remedy will be selected based upon the results of the
study.
Site Facts: The site was originally proposed to the NPL on June 24, 1988, on the basis of a
score above the 28.50 cutoff on the original Hazard ranking System (HRS). In response to public
comment, the score fell to below the cutoff, and the site was dropped from consideration from
the NPL on February 11, 1991. It is being re-proposed at this time on the basis of its score on
the revised HRS. New information was used to evaluate the surface water migration pathway,
which is scored differently under the two systems.
Environmental Progress
The EPA conducted an assessment of the site and found no acute risk warranting immediate
action while the EPA and the State formulate a strategy for long-term response to contamination
at the site.
March 1995
RICHARDSON FLAT TAILINGS
-------
ROSE PARK
SLUDGE PIT
UTAH
EPA ID# UTD98063545
EPA REGION 8
Salt Lake County
Salt Lake City
Site Description
The Rose Park Sludge Pit site is approximately 2 acres in size and is located in a Salt Lake City
park which also includes a baseball field, tennis courts, soccer fields, and a golf course. The area
was used by predecessors of Amoco Oil Co. for the disposal of petroleum wastes from the early
1920s until 1957. Refinery sludges were placed into unlined storage pits. The City bought the
property in 1957 and covered the site. During park development grading operations, site
contamination was discovered when a bulldozer broke through the cover and re-exposed the
sludge. The area surrounding the site consists of residential, recreational, and industrial areas.
Site Responsibility:
This site was addressed through Federal
and potentially responsible parties'
actions.
NPL LISTING HISTORY
Proposed Date: 10/23/81
Final Date: 09/08/83
Threats and Contaminants
Refinery sludges were contaminated with polycyclic aromatic hydrocarbons (PAHs)
and sulfur dioxide. Physical contact with the highly acidic refinery sludges was a
potential health threat. Groundwater contamination from migration of the sludge was
possible. However, the area is now capped and the sludges do not pose a threat to the
public or the environment. A five year review was prepared in 1992 that confirmed
that the remedy remains protective.
March 1995
-------
Cleanup Approach
Response Action Status
Entire Site: Construction of a lined clay cap and slurry wall over and around the
site was completed in 1983 and revegetation was completed in spring 1984. The site
cleanup was completed as of 1985; however, groundwater monitoring is required to
evaluate the effectiveness of the containment wall. At an annual monitoring meeting held in
1989, it was concluded that the present groundwater operation and maintenance criteria were not
adequate to determine the effectiveness of the remedy. The plan was subsequently resubmitted
and approved. In January 1990, Amoco submitted a plan to monitor groundwater flow around
the containment area. The first phase of the monitoring was completed. The second phase,
completed in 1992, included the installation of additional groundwater quality monitoring wells.
A five year review was prepared in 1992 and that confirmed the protectiveness of the site
cleanup. Amoco will monitor the groundwater until approximately 2015.
Environmental Progress
The cap and slurry wall have contained the sludges and have prevented contamination of
groundwater resources. All planned cleanup activities for the Rose Park Sludge Pit site have
been completed. Amoco will continue to monitor groundwater to ensure that no contamination is
released into the groundwater and that the site will not pose a threat to human health or the
environment. The site is currently being considered for deletion from the NPL.
Site Repository
Utah State Department of Environmental Quality, Division of Environmental Response and
Remediation, 168 North 1950 West, 1st Floor, Salt Lake City, UT 84116
March 1995
ROSE PARK SLUDGE PIT
-------
SHARON STEEL
(MIDVALE TAILIN
UTAH
EPA ID# UTD980951388
EPA REGION 8
Salt Lake County
Midvale
Site Description
The Sharon Steel site is a former milling and smelting operation covering 268 acres in Midvale.
Operations began in 1905. The smelter closed in 1958 and the milling operations closed in 1971.
Sulfide concentrates of lead, copper, zinc, and other metals were extracted from ore during the
milling operations. Wastes from this process resulted in an estimated accumulation of 10 million
tons of 40 to 50 foot deep mine tailings piles on the site. The State first became involved at the
mill in 1982, when it learned that nearby residents were gathering the windblown tailings for use
in gardens and children's sandboxes. The State tested the "sand" from the gardens and
sandboxes and found high levels of lead. The U.S. Geological Survey (USGS) found arsenic in
groundwater underneath the site. Approximately 1,400 people live within 1/4 mile of the site;
approximately 8,000 people live within 1 mile. The Jordan River supplies water to 160 acres of
farm land through 10 irrigation intakes within 3 miles of the site. Two smaller drainage ditches,
the North Jordan Canal and Galena Canal, are nearby. A 22-acre wetland and several small
ponds also are on the mill site. The deep aquifer underlying the site is a source of drinking
water for the metropolitan Salt Lake City area. Municipal wells that draw from this aquifer are
within 3 miles of the site.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 08/30/90
Threats and Contaminants
The shallow groundwater is contaminated with heavy metals such as arsenic, iron,
manganese, and zinc from the mill site. Sediments from the Jordan River, which is
classified by the State for cold-water game fishing and recreation other than swimming,
are contaminated with heavy metals. Soil is contaminated with heavy metals including
lead, arsenic, cadmium, and zinc. The wetlands on the site contain heavy metals and
zinc tailings. The greatest potential health threat to people is exposure to lead and
arsenic through direct contact with or inhalation of contaminated soils, including dust;
children playing in nearby neighborhood soils or sandboxes are especially at risk.
March 1995
-------
Cleanup Approach
The site is being addressed in three stages: immediate actions and two long-term remedial phases
focusing on cleanup of the groundwater and soils at the mill site and grounds, and the vicinity
properties.
Response Action Status
Immediate Actions: In 1989, the party potentially responsible for the site
contamination installed a fence around the site. In 1992, EPA completed dismantling
the Mill Building complex. The buildings presented hazards to trespassers who were
attracted by the aging structures.
Mill Site and Grounds: The EPA has completed studies to determine the nature
and extent of groundwater and soil contamination on the mill site. A remedy for the
mill site and tailings was selected in late 1993, which includes consolidating
contaminated soils on the tailings pile and constructing a cap to cover the tailings and prevent
exposure and infiltration of water. A contingency plan was included as part of the remedy that
allowed for the evaluation of off-site alternatives to capping the tailings. Groundwater
monitoring is required as part of the remedy. Design of the remedy was completed in the fall of
1994. Construction is expected to begin shortly.
Vicinity Properties: The remedy selected by the EPA in late 1990 to address soil
contamination in the vicinity of the site includes excavating contaminated soil and
storing the soil on the tailings until a final remedy is applied to the tailings. The
excavated soil will be replaced with clean fill and revegetated. In 1993, 118 properties were
cleaned up through removal of all contaminated soils. Properties were restored to original
conditions with new materials and relandscaped. In 1994, an additional 265 properties were
cleaned up. Cleanup actions will continue in phases during 1995 and 1996. The State of Utah
currently is designing and constructing the remedy.
Environmental Progress
By constructing a fence to restrict access to the mill site and grounds, dismantling the mill
buildings, recycling scrap metals and other materials, and removing contaminated soils from
nearly 400 properties, the potentially responsible parties, the State of Utah, and the EPA have
reduced the possibility of direct exposure to the contaminants on the Sharon Steel site. The
design of remaining cleanup remedies is underway.
March 1995 2 SHARON STEEL (MiDVALE TAILINGS)
-------
TOOELE ARM
DEPOT
(NORTH AREA)
UTAH
EPA ID# UT3213820894
EPA REGION 8
Tooele County
Tooele Valley, 2 miles south of Tooele
Site Description
The 24,732-acre Tooele Army Depot site, established in 1942, is one of the major ammunition
storage and equipment maintenance installations in the United States. Disposal practices at the
site have included discharging wastes to unlined evaporation or percolation ponds; neutralizing
and thermally destroying chemical agents and munitions; and detonating, burning, and burying
materials at the demilitarization range. The City of Tooele has a population of 15,000. The
deep regional aquifer, used as a drinking water source by area communities, is contaminated
beneath the industrial area of the Depot and several hundred yards beyond the north property
boundary. A portion of this industrial area at Tooele Army Depot, including the vehicle
maintainence facility, has been designated for base closure.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 08/30/90
Threats and Contaminants
On-site groundwater is contaminated from the unlined industrial waste lagoon and
wastewater ditches. Principal contaminants include trichloroethylene (TCE) and
chromium. Another area of groundwater, near a Bomb Washout Facility, is
contaminated with TCE and explosive-related compounds. Soil contamination exists
in numerous areas and consists primarily of heavy metals, mainly lead and explosive
compounds. The potential health threat to people includes drinking contaminated
groundwater and direct contact with contaminated soil. Because the site is a secured
military installation, public access is restricted.
March 1995
-------
Cleanup Approach
The site is being addressed in six long-term remedial phases.
Response Action Status
Groundwater: The U.S. Army has completed construction of the pumping and air
stripping system for groundwater cleanup at the Industrial Waste Lagoon. The system
began operation in early 1994 and was modified to close gaps in the interception of
the plume. The system will continue to operate until a final remedy is chosen under the
Resource Conservation and Recovery Act (RCRA) program.
PCB Storage: In 1994, the EPA chose to conduct no further action at the
Transformer Storage Area and the PCB Storage Building 659 under the Superfund
program. This area's cleanup is now being addressed under the RCRA program.
Low-level Radioactivity: In 1994,the EPA chose to conduct no further action at the
Drummed Radioactive Waste Area and the Radioactive Waste Storage Building due to
the low levels of radioactivity found during sampling.
PCB Pole Spill: In 1994, the EPA selected a remedy to address low levels of PCBs
in the Pole Spill Area. The remedy required filling a hole created by a former
removal with clean soil, and covering it with more clean soil and gravel. This area
is currently in the remedy design process. Cleanup is expected to begin in October 1995.
Box Elder Wash-Drum: In 1994, the EPA selected a remedy which includes
removing 10 drums with tar-like substances, overpacking the drums, and incinerating
them off site. Also, the soils around the drums will be removed and incinerated.
This area is currently in the remedy design process. Cleanup is expected to begin in October
1995.
Other Areas: The U.S. Army has begun investigations to identify releases of
hazardous chemicals and cleanup alternatives at numerous other areas of
contamination on the site including the Wastewater Spreading Area, the Washout
Pond, and the Rifle Range. Investigations will determine the nature and extent of the
contamination and will identify alternatives for final cleanup at these waste disposal and release
areas.
Site Facts: Tooele Army Depot-North Area (TEAD-N), Utah Department of Environmental
Quality (UDEQ), and the Environmental Protection Agency completed Federal Facility
Agreement (FFA) negotiations and signed the FFA on September 16, 1991. The FFA provides
for two separate cleanup actions under Superfund and RCRA authorities at TEAD-N. The
RCRA action will address 30 of the 47 contaminated areas . Superfund will address the
remaining 17. TEAD-N is participating in the Installation Restoration Program (IRP), a
specifically funded program developed in 1978 by the Department of Defence (DOD) to identify,
control and investigate hazardous wastes on military or other DOD installations.
March 1995 2 TOOELE ARMY DEPOT (NORTH AREA)
-------
Environmental Progress
The Army, in conjunction with the EPA and the State of Utah, has selected a pump and treat
remedy for the groundwater contamination and has begun treating the contaminated groundwater.
This action is making the Tooele Army Depot (North Area) site safer while the U.S. Army and
the EPA continue to conduct investigations of several other areas at the site.
TOOELE ARMY DEPOT (NORTH AREA)
March 1995
-------
UTAH POWER &
LIGHT/AMERIC
BARREL
UTAH
EPA ID# UTD980667240
Site Description
EPA REGION 8
Salt Lake County
Salt Lake City
The 2Vi-acre Utah Power & Light/American Barrel site was used as a barrel storage yard.
Empty barrels at one time contained residues of various volatile organic compounds (VOCs),
degreasers, and solvents. Prior to the barrel operation, a coal gasification plant operated at the
site from 1873 to 1908. The site was used by Utah Power and Light as a creosote pole treating
facility from the 1920s until 1958. Several creosote dip tanks were located on the site.
Approximately 39,700 people live within 2 miles of the site. Four schools are located within 1
mile. The nearest residence lies 225 feet away. One municipal well and one private well are
located within 1 mile of the site. A drainage ditch runs along the eastern fence of the site.
Water conveyed by the ditch during heavy rains is believed to percolate into the ground within
several yards of the site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 05/05/89
Final Date: 10/04/89
Threats and Contaminants
Soils contain polycyclic aromatic hydrocarbons (PAHs), VOCs, and cyanide from
wood treating and coal gasification operations. Surface soils also contain lead from
metalliferous slag fill brought to the site, pesticide residues from the barrels, and
PAHs from coal debris. Groundwater contains VOCs including benzene, styrene,
toluene, xylene, and cyanide. Potential health risks may exist for individuals who
may be exposed to contaminated soil and groundwater over a long period of time.
March 1995
-------
Cleanup Approach
This site is being addressed in two stages: an immediate action and a long-term remedial phase
focusing on soil and groundwater cleanup.
Response Action Status
Immediate Action: In 1988, under EPA supervision, the parties potentially
responsible for the site contamination removed approximately 50,000 empty barrels
to a federally-approved facility. These barrels contained VOCs, solvents, and
herbicide residues.
Soil and Groundwater: The potentially responsible parties initiated an investigation
in 1990 to determine the type and extent of groundwater and soil contamination and to
identify possible cleanup alternatives. Sampling and site characterization were
completed in 1991. A study to evaluate options for cleaning up the contaminants at the site was
completed in 1993, and a remedy was selected. The remedy specified that soils containing coal
tars and creosote be excavated and shipped off site for recycling into a cold mix asphalt product
suitable for road paving. Soil vapor extraction will be used to further address VOCs near the
water table that are sources of groundwater contamination. Once sources of groundwater
contamination have been cleaned up, groundwater contamination is expected to naturally dissipate
over time. Groundwater monitoring will be performed to ensure that cleanup levels are met. All
cleanup work is scheduled to be completed in 1995.
Site Facts: The EPA and the potentially responsible parties signed an Administrative Order on
Consent in August 1990, under which the parties agreed to conduct the soil and groundwater
investigation. This order was later amended in November 1993 to add remedial design tasks for
the first phase of cleanup. A Consent Decree was signed under which the parties agreed to
perform remaining design and cleanup activities.
Environmental Progress
The removal of waste barrels containing VOCs, solvents, and herbicide residues has reduced the
potential for exposure to hazardous materials at the Utah Power & Light/American Barrel site
while final cleanup activities are underway. The site is fenced to restrict access and possible
exposure.
March 1995 2 UTAH POWER & LIGHT/AMERICAN BARREL
-------
WASATCH CHEMICA
COMPANY (LOT 6)
UTAH
EPA ID# UTD000716399
EPA REGION 8
Salt Lake County
Salt Lake City
Site Description
The 15-acre Wasatch Chemical Company (Lot 6) site was used for the formulation of various
pesticides, herbicides, and industrial chemical products from the late 1950s until early 1990s.
Approximately 2,300 cubic yards of waste were disposed of in a concrete pond and drums on the
site. During an inspection in 1985, the State found 48 drums holding ignitable and reactive
liquids and 13 pressurized gas cylinders in deteriorated condition. Additional wastes from the
operation are believed to have been discharged into a street ditch, which eventually drains into
the Great Salt Lake. Approximately 85,000 people live within a 3-mile radius of the site. The
closest residence is !4 mile away. Although previously accessible to trespassers, the site is now
secured.
Site Responsibility: This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 01/22/87
Final Date: 02/11/91
Threats and Contaminants
Groundwater underlying the site contains volatile organic compounds (VOCs),
including toluene and xylene, as well as herbicides. Soils and sludges contain the
VOCs toluene and xylene, in addition to pesticides, herbicides, and dioxins. Potential
health risks exist for individuals who accidentally ingest or touch contaminated
ground water, sludges, or soils.
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.
March 1995
-------
Response Action Status
Immediate Actions: The EPA removed abandoned gas cylinders from the site in
1986 and detonated them at a State-owned site. The parties potentially responsible
for the contamination constructed a dioxin storage facility. Abandoned drums were
repackaged and stored in the facility along with certain surface soils removed from Lot 6.
Dioxin-contaminated soils are temporarily capped, awaiting final cleanup action.
Entire Site: In early 1991, the potentially responsible parties completed an
investigation, under State supervision, to determine the type and extent of soil, surface
water, and groundwater contamination. The remedy selected in 1991 includes the
consolidation of contaminated soils, sludges, and other wastes in an evaporation pond formerly
used at the site and in-place vitrification of these materials. Contaminated groundwater will be
removed through extraction wells, treated by air stripping and carbon adsorption, and discharged
to a sewer system. Additionally, institutional controls will prevent the use of contaminated
groundwater. Design of the selected remedy was completed by 1993. In 1992, further
investigations found additional VOC contamination in groundwater extending far north of the site
boundaries. The boundaries have been expanded to include the entire contaminant plume.
Construction of the groundwater treatment system is in the final stages of completion, and
treatment is scheduled to begin in 1995. Cleanup of the soil and sludges was initiated in late
1992 with landfarming of soils containing xylene and toluene. Landfarming was completed in
late 1993. Excavation of contaminated soils and sludges took place during 1993. These
excavated materials were stockpiled in the former evaporation pond and are being treated by in-
situ vitrification. The vitrification treatment is scheduled for completion in late 1995.
Site Facts: In 1986, the State of Utah and the EPA negotiated a Consent Order for removal of
the drums. A Consent Decree was signed in 1988 with one of the potentially responsible parties
agreeing to complete a site investigation. A Consent Decree was signed in September 1991 with
certain potentially responsible parties to complete the design of site remedies and perform cleanup
actions.
Environmental Progress
The removal of gas cylinders and safe storage of abandoned drums have reduced the potential for
exposure to contaminated materials at the Wasatch Chemical Company site while groundwater
cleanup is being planned. Landfarming is complete, resulting in the cleanup of those soils
contaminated with xylene and toluene. Contaminated soils and sludges have been excavated, and
only in-situ vitrification of the materials in the staged location remains to be completed.
March 1995 2 WASATCH CHEMICAL COMPANY (LOT 6)
------- |