PB95-962926
9200.5-724O
May 1995
SUPERFUND:
Progress at
National
Priority
List Sites
MINNESOTA
1995 UPDATE
Printed OK Recycled Paper
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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:
1
: 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 xxxxto»»^xxxxjc xxxxx xxxxxx xxxxxxxx xxxxxxxx xxxx xxxxxxxxxx :
XXXXXXXXXXXX I iltlllLI^ H XX XXXXXXXXX XXXXX XXXX XXXX XXXXX XXXXXXX XXXXXXXX
XXXXXXXX XXXXXXXXX XXXX XXXxTOtHK$XXXX XXXXXXXX XXXXX XXXX XXXXX XXX XXX XXXXXX
XXXXXXXXXXXX XX XXXXXXX XXX JLII JUlTHM L11 " XXXXXX XX XXXX XXX XXXXX XXX XXXXX XXX XXXXX
Site Responsibility: xxxxxx
XXX XXXXX
;xxxx xxxxxxxxx xxxxxxxx
XXXXXXXXXXXXX XXXXXXXXX
NPL Listing History
Proposed XX/XX/XX
Final XX/XX/XX
Threats and Contaminants
XXXXXX XXX XXXXX XXXXXXXXXXXX XXXXXX XXXXXXXXX XXXXXXXX
XXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXX XXXX XXXXXXXX XXXX XX XXXXXXXXX
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 :
XXXXXXXX XXXXXXX XXX XXXXXX XXXXXX XXXXX XXXXXX XXXXXXXX XXXXXXXX ;
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
XXX XXXXXX XXXXXXXXXXXX XX XXXXXXX XXX XXXXXX XX XXXXXX XXXXXXXX XXX .
r3C*S«
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 :
^^Sytxxxxx 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 XKXXXKX 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.
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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 Site Name
MND980904023 ADRIAN MUNICIPAL WELL FIELD
MND980898068 AGATE LAKE SCRAPYARD
MND980823975 ARROWHEAD REFINERY CO.
MND053417515 BOISE CASCADE/ONAN CORP./MEDTRONICS, INC.
MND000686196 BURLINGTON NORTHERN (BRAINERD/BAXTER)
MND981191570 DAKHUE SANITARY LANDFILL
MND981088180 EAST BETHEL DEMOLITION LANDFILL
MND006481543 FMC CORP. (FRIDLEY PLANT)
MND038384004 FREEWAY SANITARY LANDFILL
MND051441731 GENERAL MILLS/HENKEL CORP.
MND044799856 JOSLYN MANFACTURING & SUPPLY CO.
MND000686071 KOCH REFINING CO./N-REN CORP.
MND000819359 KOPPERS COKE
MND980904049 KUMMER SANITARY LANDFILL
MND059680165 KURT MANUFACTURING CO.
MND981090483 LAGRAND SANITARY LANDFILL
MND982425209 LAKE ELMO AIRPORT/GROUNDWATER CONTAMINATION
MND980792469 LEHILLIER/MANKATO SITE
MND980904072 LONG PRAIRIE GROUND WATER CONTAMINATION
MND006192694 MACGILLIS & GIBBS/BELL LUMBER & POLE CO.
MND980792287 MORRIS ARSENIC DUMP SITE
MN3170022914 NAVAL INDUSTRIAL RESERVE ORDNANCE PLANT
MN7213820908 NEW BRIGHTON / ARDEN HILLS / TCAAP (USARMY)
MND097891634 NL INDUSTRIES/TARACORP/GOLDEN AUTO
MND006154017 NUTTING TRUCK & CASTER CO.
MND980904056 OAK GROVE SANITARY LANDFILL
MND980609515 OAKDALE DUMP
MND000874354 OLMSTED COUNTY SANITARY LANDFILL
MND980609572 PERHAM ARSENIC SITE
MND000245795 PINE BEND SANITARY LANDFILL
MND980609804 REILLY TAR & CHEMICAL (ST. LOUIS PARK PLANT)
MND980904064 RITARI POST & POLE
MND980609614 SOUTH ANDOVER SITE
MND039045430 ST. LOUIS RIVER SITE
MND057597940 ST. REGIS PAPER CO.
MND981002256 ST. AUGUSTA SANITARY LANDFILL/ENGEN DUMP
MN8570024275 TWIN CITIES AIR FORCE BASE (SAR LANDFILL)
MND022949192 UNION SCRAP IRON METAL
MND980613780 UNIVERSITY MINNESOTA (ROSEMOUNT RESEARCH CENTER)
MND981002249 WAITE PARK WELLS
MND980704738 WASHINGTON COUNTY LANDFILL
MND980609119 WASTE DISPOSAL ENGINEERING
MND006252233 WHITTAKER CORP.
MND980034516 WINDOM DUMP
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ADRIAN MUN
WELL FIELD
MINNESOTA
EPA ID# MND980904023
EPA REGION 5
Nobles County
Adrian
Site Description
The Adrian Municipal Well Field site, located within the Adrian city limits, is contaminated with
volatile halogenated and non-halogenated organic chemicals, according to tests conducted by the
State. The State has closed the two most highly contaminated city wells because of the health
risk. The City now is using two uncontaminated wells previously slated to be abandoned due to
their age and low capacity. Since contaminants found in Adrian wells are typical of gasoline
contamination, source investigations have focused on a number of underground storage tanks
used to store gasoline and fuel oil. There are nine separate underground storage tank locations in
the vicinity of the Adrian Municipal Well Field. The source of the contamination appears to be a
service station that had visibly leaking underground storage tanks removed in the past, and
possibly, a local glass company. The underground storage tanks from all but three of the
locations have been removed. The estimated population of Adrian in 1987 was 1,305 residents.
All households, with one exception, are connected to a municipal water supply. The nearest
residence is located approximately two blocks south of the contaminated area. Several
recreational facilities, including a swimming pool, two ballfields, and a campground, are located
between the areas of contamination and the upper arm of Kanaranzi Creek.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
Deletion Date: 12/30/92
Threats and Contaminants
The groundwater is polluted with volatile organic compounds (VOCs) including
benzene, toluene, and chloroform. Inhalation of airborne contaminants, and ingestion
and direct contact with contaminated groundwater are potential health threats;
however, it is unlikely since alternative drinking water sources have been provided to
affected residents.
January 1995
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Cleanup Approach
Response Action Status
Initial Actions: After installation of activated carbon filtration units, the closed
wells (wells 3 and 4) were temporarily brought back on line from July through
November 1984. During this interim period, two new wells were installed outside the
area of contamination. Well 5 went into production in November 1984, and Well 6 went into
production in 1985.
Entire Site: In late 1989, the EPA decided to transfer responsibility for the
remaining site cleanup actions to the EPA's Underground Storage Tank program,
administered by the Minnesota Pollution Control Agency, for contaminated soil
removal and area cleanup. Superfund activity has been completed at this site, and the site was
deleted from the NPL in December 1992.
Environmental Progress
The installation of two new wells outside of the area of contamination at the Adrian Municipal
Well Field site has eliminated the potential for exposure to contaminated drinking water for users
of the municipal water system. While Superfund activity has been completed at the site, final
cleanup activities will be conducted under the EPA Underground Storage Tank program.
Site Repository
Adrian Public Library, 214 Maine Avenue, Adrian, MN 56110
January 1995
ADRIAN MUNICIPAL WELL FIELD
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AGATE LAKE
SCRAP YARD
MINNESOTA
EPA ID# MND980898068
EPA REGION 5
Cass County
tern shore of Agate Lake,
Fairview Township
Site Description
The Agate Lake Scrap Yard covers about 2 acres on the eastern shore of Agate Lake in a rural
area of Fairview Township. The area is used mostly for recreation and residential purposes.
About 480 acres of public forest and adjacent wetland near the northwestern side of the site are
used for hunting. Approximately 33 homes, a small resort, and a golf course are located across
the lake from the site. The Agate Lake Scrap Yard operated from 1952 to 1982 as an industrial
waste treatment facility. Two homemade furnaces were used to smelt aluminum, copper, and lead
for an unknown time period until the site closed. Transformer oils and halogenated solvents were
used to fuel the furnace. Transformer liquids sometimes were spilled or drained onto the ground,
mainly near the furnaces. A large ash pile from the furnaces was found in the main transformer
storage area. This pile was fenced during cleanup of the site in the early 1980s. The fencing has
been partially removed since that time, which allows access to the ash pile. Two smaller ash piles
that are thought to contain asbestos were found on the northeastern side of the site. An on-site
open dump area along the western side of the entrance road, just north of a gully, contains
bottles, cans, and other trash. The gully area slopes down toward a wetland area about 10 feet
north. Junked automobiles are found at various locations on the site, about 100 feet from Agate
Lake. Lead batteries were observed in several places. Approximately 1,100 people reside within
3 miles of the site. These people depend on groundwater as a source of drinking water.
Site Responsibility:
This site is being addressed tiirough
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
February 1995
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Threats and Contaminants
The groundwater is contaminated with volatile organic compounds (VOCs) including
trichloroethylene (TCE), benzene, toluene, and methylene chloride. The soil is
contaminated with polychlorinated biphenyls (PCBs), dioxins, furans, and lead.
Exposure to contaminants from soils is most likely to occur through accidental
ingestion or inhalation of contaminated soil or ash particles. Children playing in the
area are especially vulnerable. Swimmers and people fishing may be exposed to PCBs
if they use Agate Lake or the nearby wetlands for recreation. People consuming fish
from the lake also may be exposed to health risks.
Cleanup Approach
Response Action Status
Interim Actions: Transformers, five drums of transformer oils, and 51 drums of
waste solvents and liquids were removed from the site during two operations in 1983.
Two furnaces also were dismantled. In the fall of 1983, approximately 300 cubic
yards of contaminated soil were excavated from the main transformer storage area and were
deposited in an on-site gully located west of the site entrance road. The contaminated soil was
mixed with clean soil and revegetated with grass seed. The contaminated ash pile and the surface
soils were disposed of and excavated.
Entire Site: Investigations into the nature and extent of contamination have been
completed by the party potentially responsible for site contamination, under State
supervision. In 1994, the EPA concurred upon the selection of a remedy to clean up
the site. The remedy selected was natural attenuation and groundwater monitoring. Design of this
remedy was completed in early 1994. Four additional groundwater monitoring wells were
installed in the summer of 1994. Monitoring will continue for several years until cleanup goals
are met.
Site Facts: In 1986, the State of Minnesota issued a Unilateral Administrative Order compelling
the potentially responsible party to perform an investigation of site contamination and to identify
alternative methods for cleanup.
Environmental Progress
The contaminated materials and soils have been removed from the Agate Lake Scrap Yard site,
thereby reducing the potential for exposure to hazardous materials while groundwater cleanup
continues.
February 1995 2 AGATE LAKE SCRAP YARD
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Site Repository
Brainerd Public Library, 416 South 5th Street, Brainerd, MN 56401
AGATE LAKE SCRAP YARD 3 February 1995
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ARROWHEAD
REFINERY
COMPANY
MINNESOTA
EPA ID# MND980823975
Site Description
EPA REGION 5
St. Louis County
Hermantown
Other Names:
Arrowhead Ref. Sludge Dspl.
The Arrowhead Refinery Company site, which is located in Hermantown near Duluth, consists of
10 acres of relatively flat land with peaty wetlands scattered across the area. During the 1940s,
the site was used for retinning milk cans. In 1951, however, Arrowhead began recycling waste
oil, which produced a highly acidic, metal-laden sludge. It is estimated that the operation
generated approximately 6,000 cubic yards of waste by-products, which were discharged into a 2-
acre lagoon and a wastewater ditch in a wetland area. The Arrowhead Refinery Company
incorporated in 1961 and continued refining and recycling operations until 1977, when the
Minnesota Pollution Control Agency (MFCA) ordered work to be stopped. Investigations
conducted by the EPA in 1979 revealed that on-site surface water was transporting contaminants
to nearby wetlands areas and navigable waters. Most of the 754 residences within a 3-mile radius
of the site use groundwater that could be affected by the contaminants in the sludge.
Site Responsibility:
This site is being addressed through a
combination of Federal, State, and
potentially responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
ZGJ
Groundwater, surface water, soils, and sediments are contaminated with volatile
organic compounds (VOCs), poly cyclic aromatic hydrocarbons (PAHs), and heavy
metals such as lead. The sludge lagoon, covering roughly 1 acre, consists of liquid
sludge approximately IVfc feet deep and up to 7 feet of solid sludge, filter cake, and
peat saturated with oil to a depth of at least 4 inches. The contaminated sludge may
pose health risks to individuals or wildlife coming in direct contact with it.
Groundwater beneath the site is contaminated, but the contamination has not yet
affected the private drinking water wells near the site. The area is fenced to prevent
public access to the site.
January 1995
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Cleanup Approach
The site is being addressed in two stages: an immediate action and a long-term remedial phase
focusing on cleanup of the entire site.
Response Action Status
Immediate Action: A surface water diversion ditch was constructed in 1980 by the
Coast Guard and the EPA to prevent further contaminant migration, and a fence was
installed in 1990.
Entire Site: In 1986, the EPA selected the following remedies to address the site
contamination: excavation and on-site incineration of 4,600 cubic yards of sludge and
39,400 cubic yards of contaminated soils and sediments; groundwater extraction and
treatment to restore the aquifer and control contaminant migration over a 25 to 50-year period;
extension of a nearby municipal water supply system to replace those private water supplies most
likely to be affected by groundwater contamination; and proper plugging and abandonment of
individual wells formerly used as drinking water supplies in accordance with State well closure
codes. Under EPA oversight, the potentially responsible parties designed the technical
specifications for the construction of the Hermantown water main extension. Construction of the
water main extension was completed in late 1990. Construction of the extraction and treatment
system was completed in 1992. The State and the potentially responsible parties conducted a
number of treatability studies to find a less costly and more "environmentally friendly"
alternative to incineration. As a result of these efforts, the remedy was amended in early 1994.
The sludge and filter cake will be re-refined and sold as off-spill level oil. The soil, where lead
is the principal contaminant, will be excavated and properly disposed of in a landfill. The site
will be back-filled with clean soil and closed. Completion of this work is expected by late 1995.
Site Facts: In March 1990, the EPA issued a Unilateral Administrative Order to several
potentially responsible parties, directing them to implement the groundwater cleanup actions. In
May 1990, the EPA issued special notice letters to several parties informing them of their
liability for the waste sludge and instructing them to begin negotiations with the EPA and the
State for cleanup of the sludge. No agreement was reached during these negotiations.
Environmental Progress
Construction of the surface water diversion ditch, extension of the Hermantown water main, and
installation of the fence have reduced the potential for contact with contaminated materials at the
Arrowhead Refinery Company while cleanup activities are underway.
Site Repository
Duluth Public Library, 520 West Superior Street, Duluth, MN 55802
January 1995 2 ARROWHEAD REFINERY COMPANY
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BOISE CASC
ONAN CORP.
MEDTRONICS,
MINNESOTA
EPA ID# MND053417515
Site Description
EPA REGION 5
Anoka County
Fridley
Other Names:
National Pole Treating Company
The Boise Cascade/Onan Corp./Medtronics, Inc. site covers 183 acres in Fridley. The National
Pole and Treating Company, later the Minnesota and Ontario Paper Company, treated wood
from 1921 until 1961 at this location. Operations at the site first used creosote to treat wood for
railroad ties and for utility poles. The company began using pentachlorophenol (PCP) to treat its
wood products in 1958 and continued this practice until 1961, when all operations stopped. In
1964, the Minnesota and Ontario Paper Company and the National Pole Treating Company were
purchased and merged into the Boise Cascade Company. The Onan Corporation acquired 133
acres of the Boise Cascade property, and Medtronic Corporation purchased the remaining 50
acres. Both of these new owners built commercial and manufacturing facilities on the site. In
1979, Onan and Medtronic uncovered large quantities of creosote from past treatment operations.
Approximately 3,000 people live within a mile of the site. Several residences are located within
500 feet of the site. Two elementary schools and several small urban parks are located within a
mile of the site. Groundwater contamination from this site is a major concern, because the towns
of Fridley and Moundsview use water drawn from municipal wells located near the site.
Site Responsibility:
This site was addressed through a
combination of Federal, State, and
potentially responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
The EPA detected high levels of organics including creosote and phenols in on-site
ground water monitoring wells, sediments, and soils. Sampling of all contaminated
areas has indicated that the contaminants have been either removed from the site or
confined within a containment vault built at the site.
January 1995
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Cleanup Approach
Response Action Status
Entire Site: Work was completed in 1986 at both properties on the site to address
the contamination problems. The work included: excavating and disposing of
contaminated soil; filling in the excavated areas with clean soil; removing and treating
contaminated groundwater at the site; constructing a fence around the site; and monitoring the air
and surface water within the site vicinity.
Site Facts: In 1984, Medtronic entered into a Consent Decree with the State to help pay the
cost of addressing contamination of its part of the site. Onan Corporation, Boise Cascade, and
two railroad companies went to court to decide their individual responsibility and an acceptable
solution to contamination of the property.
Environmental Progress
All the cleanup work at the Boise Cascade site has been completed, and the EPA is continuing to
monitor the air and surface water to ensure the effectiveness of the cleanup remedy.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
January 1995
BOISE CASCADE/ ONAN CORP./
MEDTRONICS, INC.
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BURLINGTON
NORTHERN
(BRAINERD/BAXT
PLANT)
MINNESOTA
EPA ID# MND000686196
Site Description
EPA REGION 5
row Wing County
Brainerd
The Burlington Northern (Brainerd/Baxter Plant) site is a 70-acre facility that preserved railroad
ties with creosote. Burlington Northern operated the railroad tie treatment plant between 1907
and 1985. During the 1950s, Burlington Northern began mixing creosote, a preservative, with
number five fuel oil. At some undetermined time, the mixture was changed to creosote and coal
tar. Wastewater generated from the wood treating process was sent to two shallow, unlined
surface impoundments for disposal. The discharge of wastewater to the disposal ponds generated
a sludge that contaminated both the underlying soils and ground water. The original pond was
abandoned in the 1930s and covered. The second pond was used until the fall of 1982, when a
wastewater pre-treatment plant became operational. The effluent from the pre-treatment plant was
discharged to the local municipal sewage collection system. The Mississippi River flows about
3,000 feet east of the plant, and residential areas are located to the northeast and southeast, less
than 1,000 feet from the site. Six private water supply wells are located within a V^-mile radius
of the site.
Site Responsibility:
This site is being addressed through,
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 07/16/82
Final Date: 09/08/83
Threats and Contaminants
Groundwater downgradient of the site is contaminated with carcinogenic and non-
carcinogenic polycyclic aromatic hydrocarbons (PAHs). Heavy metal contamination
also has been detected in groundwater samples. PAHs have migrated into the
surrounding soils from the contaminated wastewater and sludge. Access to the railroad
tie treatment plant is restricted; therefore, it is not likely that the general public would
enter the installation. Prior to the initiation of the cleanup activities, workers at the
site could have been exposed to the contaminants through direct contact with
contaminated soil, sludge, or groundwater or by inhaling dust when contaminated soil
or sludge was disturbed. The Mississippi River will be sampled periodically for
contamination from the site.
January 1995
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Cleanup Approach
The site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire Site: In 1985, the EPA selected the following cleanup remedies for the site:
preparation of a lined staging area for temporary storage of the sludge and
contaminated soil; removal of all standing water in the impoundment; excavation and
segregation of the sludges for subsequent free oil recovery; and excavation of visibly
contaminated soil from both impoundments and subsequent storage in the staging area. A fence
was installed around the land treatment area in 1987. The excavated areas will be backfilled and
covered. A sump for collection of the stormwater and leachate will be installed. After the
treatment process has been completed, a cover will be installed over the site. The EPA currently
is conducting soil and groundwater cleanup activities on the site. The groundwater is being
treated through a gradient control system that has been installed on site. Any water discharged to
the river will be regulated by Federal and State permits. Bioremediation of the soil and the
installation of an irrigation system also will be carried out in order to transform and immobilize
waste constituents in the soil into non-toxic materials. Construction is scheduled for completion in
late 1995.
Site Facts: A Consent Agreement was signed in April 1985 between the EPA and Burlington
Northern. Burlington Northern is carrying out the site cleanup at its own expense. In addition,
the company will reimburse the Minnesota Pollution Control Agency and the EPA for expenses
incurred in connection with past and future investigations.
Environmental Progress
The potential for exposure to hazardous wastes continues to diminish as cleanup activities at the
Burlington Northern site continue. The EPA has determined that the site does not pose an
imminent threat to the surrounding population or the environment while the groundwater gradient
control treatment system is in operation and the other cleanup activities are underway.
Site Repository
Brainerd Public Library, 206 North 7th Street, Brainerd, MN 56401
January 1995 2 BURLINGTON NORTHERN
(BRAINERD/BAXTER PLANT)
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DAKHUE SA
LANDFILL
MINNESOTA
EPA ID# MND981191570
IBS
EPA REGION 5
Dakota County
north of Cannon Falls
Site Description
The Dakhue Sanitary Landfill, covering approximately 80 acres, is a privately owned and State-
permitted sanitary landfill in Cannon Falls that has operated since 1971. Prior to 1971, the land
within the site boundary was undeveloped. Since opening, the landfill has been used for the
disposal of mixed municipal and commercial waste and small amounts of industrial waste. The
landfill was open on a part-time basis until 1973, when operations were extended to six days a
week. The exact quantity and disposal area of hazardous substances is unknown. The area
surrounding the site consists mainly of single family dwellings or farms. Residential drinking
water supply wells, municipal water supply wells, and irrigation wells draw groundwater from a
shallow aquifer and from the hydraulically connected aquifers beneath it. Approximately 650
people use the aquifer as their primary source of drinking water within a 3-mile radius of the
site, and about 6,600 acres of major cropland are irrigated with water from the aquifer. Pine
Creek, located 3/4 mile south of the site, and the Cannon River, located 2 3/4 miles south of the
site, are used for recreational purposes.
Site Responsibility:
This site was addressed through a
combination of Federal, State, and
potentially responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/26/89
Final Date: 08/30/90
Threats and Contaminants
On-site groundwater is contaminated with volatile organic compounds (VOCs),
chloroform, and heavy metals including cadmium and lead. People could be exposed
to potential health threats by drinking the contaminated groundwater or by eating food
crops that have been irrigated with the contaminated groundwater.
January 1995
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Cleanup Approach
Response Action Status
Interim Actions: Interim erosion control measures were completed in June 1990.
Areas where garbage was exposed were filled in, and a trench was dug around the
site to direct surface water into catch basins.
Source Control: Under the supervision of the State of Minnesota, a study was
conducted by the potentially responsible parties to determine the source of the
contamination and to identify cleanup actions to control the source. In 1991, the EPA
decided to install a solid waste cap over the landfill as well as a leachate collection system. These
cleanup actions were completed in 1992.
Ground water: An investigation into the nature and extent of the groundwater
contamination was completed in 1992. The remedy was selected in mid-1993. The
EPA and the State have decided to monitor the groundwater on-site and let the aquifer
clean itself through natural processes.
Site Facts: The State amended the landfill permit in 1983, and, in 1984, it issued a notice to
the facility for violation of the amended permit. In 1984, the State and the potentially responsible
party entered into a Consent Order requiring the party to conduct the investigation into the nature
and extent of contamination at the site and to recommend alternatives for final cleanup.
Environmental Progress
All construction at the site has been completed. The interim measures to control the movement of
contamination from the Dakhue Sanitary Landfill site reduced the potential for exposure to
hazardous materials on and around the site. The EPA-approved solid waste landfill cap and
groundwater monitoring program have eliminated threats posed by the Dakhue Sanitary Landfill
site.
Site Repository
Cannon Falls Library, 306 West Mill Street, Cannon Falls, MN 55009
January 1995
DAKHUE SANITARY LANDFILL
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EAST BETHEt
DEMOLITION
MINNESOTA
EPA ID# MND981088180
ERA REGION 5
Anoka County
East Bethel
Other Names:
East Bethel Sanitary Landfill
Site Description
The East Bethel Demolition Landfill site is a 60-acre landfill located in the City of East Bethel, 1
mile east of Highway 65. The site operated as an unpermitted solid waste disposal facility from
1969 to 1971. In the fall of 1971, the Minnesota Pollution Control Agency (MFCA) issued a
solid waste disposal facility permit for the site, which was amended in 1985. The site currently
accepts only demolition waste and a small amount of municipal waste. According to information
provided by representatives of the landfill, the majority of hazardous waste was accepted between
1969 and 1976. MPCA files indicate that the equivalent of approximately 4,400 drums of
hazardous industrial wastes and contaminated soils were buried in the landfill in 1974. Hazardous
industrial wastes reported to have been disposed of at the site include cleaning solvents, waste
inks, caustics and acids, paint, waste oils, thinner, dry cleaning solvents, liquids with a strong
chemical odor, small transformers, and 8-ounce cans of ether. The landfill is located on the
Anoka Sand Plain, a shallow sand aquifer that provides drinking water to some residents in the
area. The aquifer is contaminated; however, the majority of residents use a deeper aquifer for
drinking water. Approximately 3,400 people live within a 3-mile radius of the site. About 300
people who use private wells live within 1 mile of the site. The two closest residences are about
1,500 feet southwest of the landfill. A growing subdivision begins about 2,000 feet southwest of
the site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/18/85
Final Date: 06/10/86
February 1995
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Threats and Contaminants
Volatile organic compounds (VOCs) have been identified in groundwater from the
shallow aquifer. Two wells on the western and southern borders of the landfill area
are the most heavily contaminated with VOCs. Several other compounds have been
detected in the two most contaminated wells, including the heavy metals arsenic,
barium, cadmium, mercury, and lead. Polycyclic aromatic hydrocarbons (PAHs) also
were detected in these wells. On-site soils have been found to be contaminated with
VOCs, including toluene and vinyl chloride. Potential health risks may exist for those
accidentally ingesting, coming into direct contact with, or inhaling volatilized
contaminants from the contaminated groundwater or soil. The areas to the west and
southeast are marshy wetlands, and Ned's Lake lies 1,000 feet to the south; both the
wetlands and Ned's Lake may be threatened from site contaminants.
Cleanup Approach
The site is being addressed as two long-term remedial phases directed at cleanup of the
groundwater and source control.
Response Action Status
Groundwater: The State completed an investigation to determine the nature and
extent of groundwater contamination at the site. In 1993, the State selected a
groundwater pump and treat system as the most appropriate cleanup alternative for
groundwater contamination. All cleanup goals were met in late 1994.
Source Control: The State completed an investigation to determine the nature and
extent of contamination at the site and found no immediate threats to the surrounding
community or environment. A remedy to address source control is scheduled to be
selected in 1995.
Environmental Progress
The EPA performed a preliminary investigation and determined that there are no immediate
threats to the surrounding community or the environment while the investigations leading to the
final remedy selections are taking place.
Site Repository
East Bethel City Hall, 2241 221st Avenue, Northeast Cedar, MN 55011
February 1995
EAST BETHEL DEMOLITION LANDFILL
-------
FMC CORP.
(FRIDLEY PL
MINNESOTA
EPA ID# MND006481543
ERA REGION 5
Hennepin County
, about 1,000 feet east
the Mississippi River
Other Names:
FMC Corp. NIROP-U.S. Navy
Site Description
The 18-acre FMC Corp. (Fridley Plant) site combines two areas in Fridley, referred to as the
FMC lands and the Burlington Northern Railroad Company lands. The FMC lands occupy 13
acres and the Burlington Northern Railroad Company lands occupy 5 acres of the site. Both areas
are located immediately south of the FMC Ordnance Plant. From 1941 until 1964, the site
operated as a naval ordnance manufacturing complex. From about 1945 to 1969, a tract of land
south of the manufacturing complex was used for the burning and disposal of wastes, including
plating wastes, paint, paint sludges, oils, bottom ash, and chlorinated and non-chlorinated
solvents. An 11-acre unlined landfill on the site was used for the disposal of hazardous wastes.
Records indicate that solvents and sludges were dumped directly into unlined pits and burned or
buried. Disposal at the site was discontinued in 1969. There are approximately 200,000 people
living within 3 miles of the site. This population receives drinking water from wells extended into
the bedrock aquifer. The City of Minneapolis has a drinking water supply intake on the river
1,500 feet downstream of the site. The drinking water plant supplies about 500,000 people.
Site Responsibility:
This site is being addressed through a
combination of Federal, State, and
potentially responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 07/16/82
Final Date: 09/08/83
Threats and Contaminants
ZGJ
Groundwater is contaminated with volatile organic compounds (VOCs) including
trichloroethylene (TCE) and benzene. Soil was contaminated with TCE and benzene.
TCE was detected in high concentrations near the Mississippi River and probably
contributed to the detection of VOCs in the Minneapolis drinking water supply intake.
The main health risk of concern to people is from drinking contaminated groundwater.
There are no private drinking water wells in the area and the industrial wells are not
contaminated. Therefore, area residents are not directly exposed to groundwater
contamination from the site.
January 1995
-------
Cleanup Approach
Response Action Status
Immediate Actions: In 1983, the party potentially responsible for the site
contamination, under EPA and State supervision, excavated approximately 38,600
cubic yards of contaminated soil and properly disposed of it in a secure containment
and treatment facility constructed on site. Drummed waste that was found in isolated areas on the
site was excavated, overpacked, sampled, and disposed of at an off-site approved landfill. A gas
extraction and treatment system was constructed to gradually reduce the levels of contamination
in the soil in the containment and treatment facility. Excavated areas were restored and
revegetated. In a separate action, and during the same year, additional contaminated soil was
excavated and placed in the on-site containment and treatment facility.
Entire Site: The cleanup methods selected to address groundwater contamination
included: groundwater extraction and treatment with discharge to a sanitary sewer
system; groundwater monitoring to assure effectiveness of the extraction and
treatment; and implementation of land use restrictions to stop the use of contaminated
groundwater between the site and the Mississippi River. The potentially responsible party
constructed the groundwater treatment system, which has been in operation since 1987. A secure
cover was placed on the on-site containment and treatment facility to stop ongoing groundwater
contamination, and the facility has been enclosed by an 8-foot-high chain-link fence. Groundwater
treatment will continue until established cleanup goals for the site are met.
Site Facts: In 1983, the potentially responsible party, the State, and the EPA entered into an
agreement that required the potentially responsible party to construct a large clay-lined
containment and treatment facility on an uncontaminated portion of the site for placement of
about 38,600 cubic yards of contaminated soils excavated from the site. The party also agreed to
conduct the study to determine the nature and extent of groundwater contamination at the site and
to recommend alternatives for final groundwater cleanup. The recommended alternative was
documented in the remedy selected in 1987.
Environmental Progress
Construction of all remedies is complete. Removing contaminated soil and continued operation of
the on-site containment and treatment facility will help prevent further contamination of
groundwater. These actions have reduced the threat of exposure to contaminants while operation
of the groundwater treatment system continues.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
January 1995 2 FMC CORP. (FRIDLEY PLANT)
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FREEWAY SA
LANDFILL
MINNESOTA
EPA ID# MND038384004
EPA REGION 5
Dakota County
Burnsville
Site Description
The Freeway Sanitary Landfill site covers 126 acres in Burnsville. Since 1971, the Minnesota
Pollution Control Agency licensed the landfill to accept 1,962 acre-feet of household,
commercial, demolition, and non-hazardous industrial wastes. The State permit prohibited the
disposal of liquids and hazardous wastes; however, heavy metals, acids, and bases were accepted
by the landfill from local industries. The landfill also accepted 200 cubic yards of battery casings
and 448 tons of aluminum sweat furnace slag. In 1984, volatile organic compounds (VOCs) and
heavy metals were detected in the ground water. The owner has installed a 2-foot cover of soil
over the landfill. Burnsville's municipal wells are located about 4,000 feet to the south of the
landfill. These wells serve approximately 36,000 people. Two quarries are located nearby.
Surface water runoff drains from the site into the Minnesota River, about 400 feet from the
landfill.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/18/85
Final Date: 06/10/86
Threats and Contaminants
Groundwater contains VOCs such as benzene, ethyl benzene, and xylene and heavy
metals including arsenic, chromium, copper, lead, and manganese. Exposure to
contaminated groundwater is possible if the pollutants migrate to the Burnsville
municipal well field. Water beneath the landfill discharges into the Minnesota River.
Wildlife in and around the river may be harmed by the contaminants.
February 1995
-------
Cleanup Approach
The site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire site: In 1986, the EPA began an investigation into the nature and extent of
contamination at the site. In 1989, the State took the lead. Groundwater
contamination is being captured by a quarry sump located on an adjacent property.
These treatment basins pump water into the Minnesota River, stripping it of contaminants. As a
result of this process, the contaminant level of the water has been reduced to meet health-based
standards. The State anticipates that the construction of a cap over the landfill and the installation
of an active gas control system will begin in the spring of 1995 and be completed in late 1997.
Site Facts: In response to Minnesota State legislation, the Minnesota Pollution Control Agency
has taken the lead on this cleanup. The State is continuing to work with the potentially
responsible parties to clean up the site.
Environmental Progress
Pumping groundwater by a quarry sump on an adjacent property has reduced the health threats at
the Freeway Sanitary Landfill site while further cleanup actions are being planned.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
February 1995
FREEWAY SANITARY LANDFILL
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GENERAL
MILLS/HENK
CORPORATI
MINNESOTA
EPA ID# MND051441731
EPA REGION 5
Hennepin County
Minneapolis
Other Names:
ech Center Research Lab
Henkel Tech Center
Site Description
The General Mills/Henkel Corporation site is located in an industrial section of Minneapolis.
General Mills operated a technical center and research laboratories at the site from 1930 through
1977. Food research was conducted until 1947, when chemical research began. From 1947 to
1962, solvents were disposed of in a soil adsorption pit and are believed to be contained in three
buried, perforated 55-gallon drums, stacked one on top of another, with the deepest drum 10 to
12 feet below the ground surface. Approximately 1,000 gallons of solvents per year were
disposed of in this manner. The soil and the aquifers are contaminated. Although the site is in an
industrial section of Minneapolis, approximately 4,900 people live within 1 mile of the property.
Access to the site is restricted. All residences and businesses in the area are connected to the
municipal water system. This water is obtained from the Mississippi River north of the city.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater is contaminated with volatile organic compounds (VOCs) including
trichlorethylene, benzene, chloroform, toluene, and xylenes. Soil was also
contaminated with VOCs. People who come into direct contact with or accidentally
ingest contaminated groundwater may be at risk; however, exposure is unlikely, as
access to the site is restricted while treatment continues.
January 1995
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Cleanup Approach
Response Action Status
Interim Actions: General Mills installed wells to pump the water out of the
contaminated aquifers and treat it by air stripping in 1985. Air is forced through the
water that blows the contaminants out. The air is then treated before being released
into the atmosphere. The treated water is discharged into the municipal sewer system. The
groundwater is being monitored to ensure the effectiveness of the treatment.
Entire Site: The State conducted an investigation of the groundwater and soil
contamination. Cleanup began in 1985 and involves continuing the extraction and
treatment of the groundwater. The on-site contaminated groundwater is pumped to an
air stripper, then discharged into the Minneapolis storm sewer network. The off-site
contaminated groundwater is pumped directly to the Minneapolis storm sewer network. The
State has issued discharge permits for all activities. In 1992, the off-site groundwater pumping
system was expanded. The contaminants in the groundwater have been decreasing since the
pump and treatment system has begun. It may take as long as 20 years to reach the groundwater
cleanup goal. No further cleanup of the soil is required; sampling showed that contamination has
migrated into the groundwater and no longer poses a threat to the soil.
Environmental Progress
All construction of site remedies has been completed. By extracting and treating the contaminated
groundwater, the potential for exposure to hazardous materials at the General Mills/Henkel site
continues to be reduced.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
January 1995
GENERAL MILLS/HENKEL CORPORATION
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JOSLYN
MANUFACT
& SUPPLY C
MINNESOTA
EPA ID# MND044799856
Site Description -
EPA REGION 5
Hennepin County
Brooklyn Center
Other Names:
islyn Wood Products Plant
The Joslyn Manufacturing & Supply Company site covers 30 acres in Brooklyn Center. From the
1920s until 1980, a wood treating facility was operated at the site where creosote,
pentachlorophenol (PCP), and a copper-arsenic solution were used. In 1944, this facility
discharged its wastewater into a marshy area connected to Twin Lakes. Later, an unlined lagoon
adjacent to the marsh was used. In 1976, about 216,000 gallons of oil were discharged into the
lagoon. Waste sludge also was buried on site. Approximately 800 people live within l/i mile of the
site. The surrounding area is both light industrial and residential. Surface water runoff from the
site drains into Shingle Creek, which empties into the Mississippi River. Twin Lakes is used for
swimming, boating, and fishing.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater and soils are contaminated with PCPs, creosote, polycyclic aromatic
hydrocarbons (PAHs), and oil. Because groundwater flow in the area is to the east,
away from Twin Lakes, the lakes are not affected by the site. Sampling of the lakes has
confirmed this. Area drinking water is not affected, since residences are connected to
the city water system.
Cleanup Approach
The site is being addressed in two stages: interim actions and a long-term remedial phase directed
at cleanup of the entire site.
January 1995
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Response Action Status
Interim Actions: Joslyn removed about 30,000 gallons of wood treating solutions in
1981 and 65,000 gallons of sludge in 1982. These wastes were transported to a
federally approved facility. In 1986, Joslyn fenced the entire site area, and the
company connected six properties to the city water supply.
Entire Site: In 1989, the State selected a remedy for site cleanup, now being
conducted by Joslyn, which includes extracting the groundwater and discharging it to
the sanitary sewer system where it is treated. Before the water is discharged to the
sewer system, water and oil mixtures are first sent through an on-site treatment system to remove
the oil. It is estimated the groundwater extraction and treatment will continue for 30 years. In
addition, Joslyn is cleaning the soil through bioremediation. This involves thinly spreading
contaminated soil over a specially engineered area on the site, adding water and nutrients,
periodically tilling the area, and allowing the soil bacteria, with help from the applied water and
nutrients, to break down the contaminants into non-hazardous constituents. This process began in
1989 and is expected to be completed in 1995.
Site Facts: In 1985, the State and Joslyn signed a Consent Order whereby the company agreed to
clean up the site.
Environmental Progress
The removal of the most highly contaminated soils, operation of the groundwater pump and treat
system, and installation of the fence have reduced the possibility of exposure to hazardous
materials at the Joslyn Manufacturing site while the final cleanup activities are being completed.
Site Repository
Southdale Public Library, 7001 York Avenue South, Edina, MN 55435
January 1995
JOSLYN MANUFACTURING &
SUPPLY COMPANY
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KOCH REFINI
COMPANY/
N-REN CORP.
MINNESOTA
EPA ID# MND000686071
EPA REGION 5
Dakota County
Rosemount
Site Description
The Koch Refining Company/N-Ren Corp. site covers 1,200 acres in the Pine Bend industrial
district of Rosemount. The site includes the refinery and adjacent properties owned by Koch. The
Great Northern Refining Company began refining oil on this site in 1955. In 1969, the refinery
was sold to Koch, which has expanded refining capacity from 25,000 barrels to 160,000 barrels
per day. The refinery receives crude oil by pipeline and barge; the crude oil is then refined into
gasoline, jet fuel, heating oil, kerosene, diesel fuel, boiler fuel, asphalt, petroleum coke, sulfur,
carbon dioxide, butane, and propane. Product spills have been recorded in the storage tank area
on the site since the early 1970s. The State sampled water from six private wells near the
refinery and found them to be contaminated with volatile organic compounds (VOCs). A section
of gasoline pipeline running from the tank farms to the barge dock on the Mississippi River had
corroded, but was replaced. This pipeline is believed to be the source of groundwater and soil
contamination at the site. Approximately 60 people live within 1 mile of the refinery. About
1,600 people, as well as a school with 2,600 students, use wells within 3 miles of the site for
drinking water. Four miles north of the site is Inver Grove Heights, with a population of about
16,100. There is a population of about 6,800 people to the south of the site. Four people living
in two homes east of the refinery are being supplied with bottled water due to well
contamination.
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
Groundwater contaminants include VOCs, polycyclic aromatic hydrocarbons (PAHs),
phenols, and lead. Soil also is contaminated with VOCs, including benzene, toluene,
and xylenes, as well as PAHs. Drinking water for the employees on the site is
obtained from deep bedrock production wells that are not contaminated. People who
come into direct contact with or accidentally ingest contaminated soils may be at risk.
February 1995
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Cleanup Approach
The site is being addressed in two long-term remedial phases focusing on cleanup of groundwater
and of the vadose zone soils.
Response Action Status
Groundwater: Koch, under state supervision, completed an investigation in 1991
into the nature and extent of contamination at the site. Recommended cleanup
remedies for groundwater include gradient control by groundwater extraction and
treatment and product recovery. These remedies are still being investigated and studies are
expected to be completed in 1995.
Vadose Zone Soils: Koch, under state supervision, conducted an investigation into
the nature and extent of soil contamination in the Vadose Zone at the site. The Vadose
Zone is the layer of subsurface water just above the groundwater table. The
Minnesota Tanks and Spills Program conducted a pilot study to investigate the possibility of using
a vacuum extraction system to clean up the soil.
Site Facts: In 1985, the State entered into a Consent Agreement with Koch Refining Company,
whereby the company agreed to clean up the site. Initial studies determined that the site is a
petroleum release site; therefore, the site is in the process of being transferred to the Minnesota
Tanks and Spills Program.
Environmental Progress
The EPA conducted preliminary evaluations of the site conditions and determined that no
immediate threat is posed to the surrounding communities or the environment while the
investigations leading to the selection of the final cleanup remedies are taking place. As the site is
being transferred to the state's responsibility, the EPA is working on an Intent to Delete the site
from the NPL.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
February 1995 2 KOCH REFINING COMPANY/
N-REN CORP.
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KOPPERS
COKE
MINNESOTA
EPA ID# MND00081935
EPA REGION 5
Ramsey County
St. Paul
Other Names:
Minnesota Coke Plant
Koppers Company, Inc.
Site Description
The Koppers Coke site covers 45 acres in the Midway area of St. Paul. The facility operated
from 1911 until 1978, producing coke, coal tars, and coal tar distillates from the coking of coal.
Coke plant wastes were disposed of in unlined earthen pits. In addition, contamination of soils
from coal tar distillates and naphtha and benzene wash has occurred. Numerous tanks and valves
leaked over the years, causing additional coal tar distillate to migrate to the shallow groundwater
table. The company demolished all standing structures and removed storage tanks in 1981. The
site was acquired in 1981 by the Port Authority for the St. Paul Energy Park. Office and light
industrial buildings now occupy the site. Approximately 15,400 residents live within 1 mile of the
site. The nearest residence is 100 feet away, and Como Park, a recreational facility, is 3/4 mile
from the site.
Site Responsibility:
This site is being addressed through a
combination of Federal, State, and
potentially responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/22/81
Final Date: 09/08/83
Threats and Contaminants
Groundwater is contaminated with volatile organic compounds (VOCs), heavy metals,
polycyclic aromatic hydrocarbons (PAHs), and phenols. Because all local residences
are connected to the municipal water supply, the private wells are not used for
drinking water. However, these wells occasionally are used for lawn and garden
irrigation. There is a potential for people to be exposed to contaminants by eating
vegetables that have been irrigated with the contaminated groundwater.
Cleanup Approach
The site is being addressed in two stages: interim actions and a long-term remedial phase
focusing on cleanup of the entire site.
January 1995
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Response Action Status
Interim Actions: In the fall of 1982, about 240,000 gallons of residue in 20 tanks
were disposed of by Koppers in a federally approved facility. Approximately 21,600
cubic yards of contaminated soils were excavated and disposed of. The entire site
was covered with clean fill. Soils found in pits too deep to be totally excavated were partially
excavated and backfilled with clean soil. They were then covered with clay and additional clean
fill, and a second layer of clay was installed.
Entire Site: Koppers began an investigation to determine the type and extent of
contamination at the site in 1989. Upon completion of the investigation, the State
reviewed the recommended cleanup alternatives and issued a proposed plan. The
State reached a decision on final cleanup actions in the spring of 1994, which involves in-situ
groundwater bioremediation. Design of the remedy began in mid-1994 and is expected to be
completed in 1995.
Site Facts: In 1978, the State and Koppers signed a Stipulation Agreement that required the
plant to shut down and required Koppers to conduct an investigation of soil and groundwater
contamination.
Environmental Progress
Most, if not all, of the contaminated residue and soils have been excavated and disposed of at an
approved disposal facility. Through these actions and the installation of the cover over the site,
the potential for exposure to hazardous materials at the Koppers Coke facility has been reduced
while final groundwater cleanup actions for the site are being planned.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
January 1995 2 KOPPERS COKE
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KUMMER SA
LANDFILL
MINNESOTA
EPA ID# MND980904049
EPA REGION 5
Beltrami County
Northern Township
Site Description
The Kummer Sanitary Landfill site in Northern Township covers 35 acres on a 40-acre parcel of
land, which includes the Kummer residence. The site was a privately owned and operated solid
waste landfill from 1971 until 1984 that accepted mixed municipal wastes. Landfill operations
consisted of excavating trenches, filling them with waste materials, and covering the fill with on-
site sand and gravel deposits. The trenches may have been excavated to the water table and the
wastes placed in direct contact with the groundwater. Beginning in 1974, demolition debris
consisting of fly ash and sawdust was disposed of on site. There is a history of violations such as
improper covering of the debris, garbage blowing from the site, and improper grading. In 1982
and 1983, the Minnesota Pollution Control Agency (MFCA) sampled groundwater from on-site
monitoring wells and found the water to be contaminated with volatile organic compounds
(VOCs). Residential wells downgradient from the site were found to be contaminated the
following year, and subsequently, in 1985, the landfill was closed. Northern Township has a
population of about 4,100 people. A trailer park is about 1,500 feet away from the landfill, and a
residential area is about 1,000 feet away, with both areas housing approximately 1,000 people.
An estimated 14,700 people use wells that draw on two aquifers within 3 miles of the site. The
City uses groundwater for its municipal water supply, and those wells are within 14 mile
upgradient of the landfill. There are numerous wetlands and lakes in the area of the site,
including Lake Bemidji, which is a mile away.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
Threats and Contaminants
7J3
Groundwater underlying the site contains VOCs including vinyl chloride, xylenes,
carbon tetrachloride, and naphthalene from the landfill wastes. People who come into
direct contact with or ingest contaminated groundwater may be at risk. There is the
potential for contaminants from the landfill to leach into Lake Bemidji or the wetlands
area. Wildlife in and around the lake and wetlands may be harmed by pollutants.
February 1995
-------
Cleanup Approach
The site is being addressed in three long-term remedial phases directed at supplying an alternate
water source, controlling the source of contamination, and cleanup of the groundwater.
Response Action Status
Alternate Water Supply: In 1985, the EPA selected a remedy to provide alternate
water to affected residents by constructing a connecting well tapping into the deep
uncontaminated aquifer, connecting into the City of Bemidji's main water line, and
installing a water distribution system. The well installation and distribution system was completed
in 1991. The State connected the affected residences to the municipal water supply; however,
some residents have refused connection.
Source Control: To control the source of the contamination, the EPA selected a
remedy in 1988 which included: grading the site and consolidating the soil and other
waste material; placing a sloping foundation layer of natural soil fill; covering the
landfill with clay or synthetic material and a drainage layer with a soil and vegetative cover;
establishing deed restrictions to limit the future use of the site; fencing the site; and monitoring
the groundwater and landfill gas to ensure the effectiveness of the cleanup. The State designed
the technical specifications for the cleanup actions, and the cleanup activities began in 1990.
Cleanup activities were completed in late 1992.
Groundwater: EPA is expected to complete its final design of the advanced
oxidation process for the cleanup of the contaminated groundwater by the fall of
1995.
Site Facts: In 1985, the EPA and the State signed a Cooperative Agreement, whereby the State
will investigate and clean up the site. In addition, the agreement provided for the funding of an
alternate water supply for residents with contaminated wells.
Environmental Progress
The potentially responsible parties entered into a Consent Decree with EPA on March 1, 1994.
The settlement provides for the recovery of past and future cleanup costs from the parties.
Site Repository
Northern Township Town Hall, 445 Town Hall Road Northwest, Bemidji, MN 56601
February 1995 2 KUMMER SANITARY LANDFILL
-------
KURT
MANUFACTU
COMPANY
MINNESOTA
EPA ID# MND059680165
Site Description
gPA REGION 5
Anoka County
Fridley
The Kurt Manufacturing Company site covers 10 acres in Fridley. The company has been
producing precision computer components since 1960. Solvent-coated metal shavings from the
machining area were placed in a storage bin located near the loading dock. In 1982, the
Minnesota Pollution Control Agency (MPCA) found two company production wells to be
contaminated with volatile organic compounds (VOCs); later that year, monitoring wells were
installed at the site. Results of groundwater sampling showed that the shallow groundwater near
the loading dock was contaminated. The State determined the metal shavings bin sump was the
source of the contamination. The site is in an industrial, commercial, and residential area. Over
163,000 people live within 1 miles of the site. The company is located a mile from the
Mississippi River.
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
Groundwater and soils are contaminated with VOCs including tetrachloroethylene and
trichloroethane. Direct contact or accidental ingestion of contaminated groundwater or
soil may pose a health risk.
Cleanup Approach
The site is being addressed in two stages: interim actions and a long-term remedial phase
focusing on cleanup of the entire site.
February 1995
-------
Response Action Status
Interim Actions: In 1984, the shaving bin sump was excavated and capped to
prevent further seepage.
Entire Site: In 1986, the State approved actions to clean up the site that consisted of
operating and maintaining a groundwater extraction system to prevent the migration of
contaminated groundwater; covering the sump area with clay to prevent rainwater
from coming into contact with contaminants; abandoning a shallow production well to minimize
migration of contaminated groundwater; and long-term monitoring to ensure the cleanup is
effective. In 1986, Kurt Manufacturing started to extract and treat the groundwater, but the
pumps were found to be inadequate. In 1987, the sump area was excavated and then covered with
clay. The response action plan was re-evaluated, and an additional pump-out well and monitoring
wells were constructed in the summer of 1994. Further investigations will be performed at the
site to determine whether additional groundwater monitoring will be required. These
investigations are expected to be completed by the end of 1995.
Site Facts: In 1984, the State issued a Request for Response Action to Kurt Manufacturing.
Under this action, the company was required to investigate the site and to develop and perform
the above cleanup activities. The cleanup plan chosen for the site currently is under re-evaluation.
Environmental Progress
By excavating and covering the areas of greatest contamination, the potential for exposure to
hazardous materials at the Kurt Manufacturing site has been reduced while cleanup activities are
underway and further studies are being planned.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
February 1995 2 KURT MANUFACTURING COMPANY
-------
LAGRAND SA
LANDFILL
MINNESOTA
EPA ID# MND981090483
EPA REGION 5
Douglas County
LaGrand Township
Site Description
The LaGrand Sanitary Landfill site covers 80 acres in LaGrand Township, 5 miles west of
Alexandria. The landfill, which occupies 5 1/2 acres, began operations in 1974 and was licensed
by the State to accept mixed municipal and non-hazardous industrial refuse. In 1977, the original
owner transferred the permit and title to Valley Disposal, Inc. Approximately 140 cubic yards of
soil containing 900 gallons of diesel fuel were stored, and consequently disposed of, at the site in
1980. The landfill had been in an almost constant state of non-compliance with solid waste
regulations and was closed in 1985, covered, and seeded. There are five abandoned buildings on
the site, a pile of several hundred tires, abandoned machinery, and junk. Approximately 1,100
people live within 3 miles of the landfill and depend on public and private wells for drinking
water. The nearest private well is 1/3 mile away from the site. A wetland is less than a mile
downstream of the site.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 06/10/86
Final Date: 07/21/87
Threats and Contaminants
Groundwater contains volatile organic compounds (VOCs) including chloroethane and
methylene chloride. People who drink contaminated groundwater may suffer adverse
health effects; however, no contamination of private wells near the site has been
found. If contaminants leach from the landfill into the nearby wetland, wildlife in or
around the wetland may be harmed.
February 1995
-------
Cleanup Approach
The site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire site: In 1987, the State began an investigation into the nature and extent of
contamination at the site. Groundwater, soil, surface water, and sediment sampling
have been conducted. A methane migration study and an investigation to determine
the effectiveness of the soil cover were completed in the fall of 1992. The remedy was selected in
1992 and includes: long term monitoring of groundwater and combustible gas; converting a
combustible gas monitoring well to a gas vent; permanently sealing and abandoning the on-site
Shop Well; Stabilizing the west slope of the landfill and covering exposed waste on the northwest
corner; sloping and reconstructing the borrow pit area adjacent to the west slope of the landfill;
imposing site access restrictions and possible deed restrictions; maintaining the existing cover
system; prohibiting the disturbance of the landfill cover and monitoring systems; and
regulating the location of future potable wells near the landfill. Construction of the remedy has
been completed, and long-term groundwater and landfill gas monitoring will begin shortly.
Environmental Progress
Construction of the cleanup remedy is complete. The EPA will begin long-term monitoring to
ensure that the remedy remains protective of the public and the environment.
Site Repository
Alexandria Public Library, 7th & Fillmore Streets, Alexandria, MN 56308
February 1995
LAGRAND SANITARY LANDFILL
-------
LAKE ELMO AIRP
GROUNDWATER
CONTAMINATION
MINNESOTA
EPA ID# MND982425209
Site Description
EPA REGION 5
ington County
Hytown Township
The Lake Elmo Airport Groundwater Contamination site consists of 34 contaminated wells in
Bay town Township. Washington County is one of seven counties surrounding the Twin Cities
metropolitan area and is primarily agricultural and rural-residential. Contamination was first
detected at the site in mid-1987 by the Minnesota Department of Health (MDH), which was
sampling the area around the Baytown Dump as part of a State-wide effort to determine water
quality around solid waste facilities. After identifying volatile organic compounds (VOCs) in the
samples, MDH issued a well advisory for the Baytown Township area. Data indicate a plume of
contamination extends 3 miles from the main hangar complex at the airport. Most of the plume
continues through Baytown Township along a strip less than 2 miles wide to the St. Croix River.
The probable sources of groundwater contamination are the airport maintenance facilities in the
main hangar complex. The VOC trichloroethene (TCE), used to degrease parts and to strip
paint, was routinely used at these facilities from 1951 to the early 1970s. According to tests
conducted by State agencies and the Metropolitan Airports Commission (MAC) in 1987 through
1991, the concentration of contamination at the airport is much higher than that of wells 3 miles
from the site, suggesting that the airport is the likely source of contamination. No other possible
source of contamination has been identified in the area. An estimated 10,450 people live in the
area; public and private wells within 4 miles of the site supply drinking water to approximately
26,000 people.
Site Responsibility:
The site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 10/14/92
Final Date: 12/16/94
Threats and Contaminants
Private wells are contaminated with VOCs, including TCE and tetrachloroethene
(PCE). Wells at the airport have higher contamination concentrations than the majority
of wells east of the site. People who come into direct contact or ingest contaminated
groundwater may be at risk.
January 1995
-------
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: An investigation into the nature and extent of contamination is being
planned. This investigation will result in the selection of a remedy to clean up site
contamination.
Environmental Progress
Initial assessments of the Lake Elmo Airport Groundwater site indicate the site poses no
immediate threats to the health of the nearby population or the integrity of the environment. A
full-scale study of site conditions is expected to begin in the near future.
Site Repository
Not established.
January 1995
LAKE ELMO AIRPORT
GROUNDWATER CONTAMINATION
-------
LEHILLIER/
MANKATO
MINNESOTA
EPA ID# MND980792469
Site Description
EPA REGION 5
Blue Earth County
Mankato
Other Names:
Groundwater
The LeHillier/Mankato Site, located just west of Mankato, covers 6,400 acres. Between 1925 and
1950, numerous natural and manmade depressions, resulting from changes in the channels of the
Minnesota and Blue Earth Rivers and from sand and gravel excavations, were filled with
miscellaneous rubbish. In 1981, the Minnesota Pollution Control Agency received anonymous
information alleging that hazardous wastes had been disposed of in several areas. Studies
confirmed contamination of the shallow sand and gravel aquifer, the primary source of drinking
water for the LeHillier and Mankato area. Approximately 500 people reside in LeHillier.
Mankato's primary water supply well is located approximately 1/4 mile north of the contaminated
area. About 29,000 people are served by Mankato's municipal water supply. The Minnesota and
the Blue Earth Rivers are used for recreational activities.
Site Responsibility:
The site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 07/16/82
Final Date: 09/08/83
Threats and Contaminants
Groundwater is contaminated with trichloroethylene (TCE) and other volatile organic
compounds (VOCs). Soil contained petroleum products and VOCs. LeHillier residents
have been provided with an alternate water supply; however, individuals may be
exposed to contaminants through accidental ingestion of or direct contact with
contaminated groundwater.
January 1995
-------
Cleanup Approach
Response Action Status
Immediate Actions: The EPA and the State supplied LeHillier residents with
bottled water for drinking and cooking in 1984 and 1985. A new, deeper LeHillier
community well and a distribution system were constructed through a Housing and
Urban Development (HUD) grant that have been operational since late 1985.
Entire Site: Based on the results of an investigation completed in 1985, the EPA
selected a remedy to clean up the site by extracting the contaminated groundwater and
treating it using an air stripping technique that removes contaminants by exposure to
air. The cleanup plan included constructing eight groundwater wells and two new extraction
wells, extending the LeHillier community water system to affected residences and businesses not
currently serviced, and properly closing individual wells formerly used for drinking water
supplies. Sampling has shown that soil contamination has migrated into the groundwater and no
longer poses a surface threat. All cleanup construction actions have been completed and the
extraction and treatment of the groundwater will continue until approximately 1999, when
established cleanup goals are expected to be met.
Environmental Progress
Providing LeHillier residents with an alternate water supply and treating groundwater have
reduced the threats at the LeHillier/Mankato site while treatment continues.
Site Repository
Minnesota Valley Regional Library, 100 East Main Street, Mankato, MN 56002
January 1995
LEHILLIER/ MANKATO SITE
-------
LONG PRAIRI
GROUND WA
CONTAMINATI
MINNESOTA
EPA ID# MND980904072
EPA REGION 5
Todd County
Long Prairie
Site Description
The Long Prairie Ground Water Contamination site, which is defined by the extent of the plume
of contaminated ground water, covers an area approximately 2,600 by 1,000 feet in Long Prairie,
Minnesota. The town has a population of 2,900, with about 2,000 residents receiving water from
municipal supplies. A number of municipal and private wells are contaminated with solvents
thought to have come from a dry cleaning business which is no longer in operation. Apparently,
disposal of used solvents, cleaning machine sludge, or incinerated sludge ash took place in and
near a sunken, perforated barrel that was used as a makeshift french drain in the parking lot
behind the dry cleaner building. The area of highest ground water contamination is migrating
from directly below the parking lot. Businesses surround the parking lot; land use in the
surrounding area is primarily residential. In 1983, routine municipal well monitoring by the
Minnesota Department of Health (MDH) indicated contamination in two of five municipal wells.
The MDH ordered the two wells shut down and issued an advisory recommending bottled water
for area residents. Ground water sampling in 1993 identified contamination in additional private
wells, as well as a threat to the new sixth municipal well. The bottled water advisory area was
subsequently extended. About 55 of the area's 300 private wells were affected by the
contamination. The few wells in the advisory area that are still in use for drinking water do not
contain levels of chemicals outside of EPA's drinking water standards.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
Threats and Contaminants
The ground water and soils are contaminated with volatile organic compounds (VOCs)
including vinyl chloride trichloroethylene (TCE) and perchloroethylene (PCE). People
using the contaminated ground water are exposed to chlorinated ethylenes by drinking
or inhaling evaporated contaminant particles from the water.
February 1995
-------
Cleanup Approach
The site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire Site: The EPA has selected the following methods for cleanup of the ground
water and soil: installation of ground water extraction wells in the contamination
plume; treatment of contaminated ground water with granular activated carbon;
discharge of treated ground water to the Long Prairie River; and treatment of contaminated soil
with an active soil venting system. In addition, homes with private wells are being connected to
the municipal water supply. The municipal water hookup is expected to be completed in mid-
1995. Construction of the soil venting and the ground water pump and treat system is scheduled
to be completed in 1996. Ground water treatment is expected to continue until 2021.
Environmental Progress
Periodic evaluation of the site has determined that threatened homes in the extended advisory area
should be connected to municipal water and private wells should be abandoned to protect human
health and the municipal water supply while final cleanup actions are being completed. This
effort is currently underway.
Site Repository
City Hall, City of Long Prairie, 42 Third Street, North, Long Prairie, MN 56347
February 1995
2 LONG PRAIRIE GROUND WATER CONTAMINATION
-------
MACGILLIS &
CO./BELL LU
POLE CO.
MINNESOTA
EPA ID# MND006192694
Site Description
EPA REGION 5
Ramsey County
New Brighton
The MacGillis & Gibbs Company and the Bell Lumber & Pole Company are adjoining properties
listed as one 44-acre site on the NPL. Both companies are wood treatment plants and have been
in operation since the early 1920s. Both plants used creosote as a preservative until the mid-
1950s. At that time, the companies began using light and heavy oils containing pentachlorophenol
(PCP). MacGillis & Gibbs has been using chromated copper arsenate since 1970, some of which
has been spilled in the process areas of the plants. Both companies used PCP sludge for weed
control in the 1960s. A pond in a low-lying area between the properties was used for the disposal
of PCP-contaminated sludge, treated and untreated wood scrap, and steel drums. Studies
conducted by the companies indicate that the groundwater and soil are contaminated with wood
preserving chemicals. There are more than 10,000 people living within a mile of the site. The
closest residence is within several hundred feet.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater, sediments, and soils are contaminated with polycyclic aromatic
hydrocarbons (PAHs), PCP, and heavy metals such as copper, chromium, and
arsenic. Barrels on the site contain PAHs, PCP, dioxins, and furans. These barrels
have been moved to a secure storage area on site. Although no private or municipal
wells are contaminated, there is a potential for future contaminant plume migration,
which may reach the private drinking water wells. Individuals having direct contact
with soil or water may be exposed to chemicals. Wetland areas surrounding the site
within a 2,000-foot radius may be subject to contamination from site runoff.
February 1995
-------
Cleanup Approach
The site is being addressed in four stages: immediate actions and three long-term remedial phases
directed at cleanup of disposal area soils, the process and lumber yard storage areas, and the
remaining areas.
Response Action Status
Immediate Actions: Open and leaking barrels containing PAHs, PCP, dioxins, and
furans were overpacked and removed to a secure storage area on the MacGillis &
Gibbs property in late 1993. The part of the disposal area owned by Bell Lumber &
Pole has been excavated, treated, filled with sand and gravel, and covered with a clay cap.
Disposal Area Soils: In 1987, the State began an investigation to determine the
type and extent of soil contamination. This investigation was completed in 1992, and
a final cleanup remedy was selected that includes soil washing and incineration of
contaminated wood debris. Design of the cleanup remedy is currently underway and is expected
to be completed in mid-1995.
Process and Lumber Yard Storage Areas: In 1990, the EPA began an
investigation to determine the extent of the contamination in the process and the
lumber yard storage areas. The investigation was completed, and a remedy was
selected in 1991. The remedy calls for the removal of abandoned process storage tanks on the
site and the treatment of a light non-aqueous phase liquid plume. Design of this remedy is
currently underway.
Remaining Areas: An investigation to determine the extent of remaining soil and
groundwater contamination in the site area and potential contamination of off-site
wetlands, streams, and lakes was completed in the fall of 1994, at which time a
remedy was selected. The remedy includes: incineration of organic contaminants in the soils;
solidification and stabilization of metal contaminated soil; and pumping and treating of the
groundwater at an on-site biological treatment plant.
Site Facts: In 1985, Bell Lumber & Pole signed a Consent Order with the State to begin
planning for the site cleanup on its portion of the site.
Environmental Progress
By removing the drums of contaminated materials and storing them in a safe location and
excavating contaminated soil from part of the site, the potential for exposure to hazardous
materials on the site has been reduced while final cleanup actions are being planned.
February 1995 2 MACGILLIS & GIBBS CO./
BELL LUMBER & POLE CO.
-------
Site Repository
Ramsey County Library, Arden Hills Branch, 1941 West County Road,
Arden Hills, MN55112
MACGILLIS & GIBBS CO./ 3 February 1995
BELL LUMBER & POLE CO.
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MORRIS ARSENIC
DUMP
MINNESOTA
EPA ID# MND980792287
EPA REGION 5
Stevens County
Northeast of Morris
Site Description
The Morris Arsenic Dump site is located approximately 1 mile northeast of the town of Morris.
In the early 1940s, approximately 1,500 pounds of arsenic-laced grasshopper bait was reportedly
buried in a gravel pit near the intersection of Highways 28 and 59. The subsequent construction
of the Highway 59 bypass through the general location of the burial site made the discovery of
the exact location of the materials difficult. It has been presumed that the arsenic was
mechanically dispersed during highway construction, since topsoil cleared from the site for
roadbed preparation was later spread along the side slopes.
Site Responsibility:
This site was addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 09/01/83
Final Date: 09/01/84
Deleted Date: 03/07/86
Threats and Contaminants
Arsenic was detected in the groundwater. The site does not pose a health hazard to the
public due to the direction of groundwater movement from the site and the minimal
population concentration within the site area. In addition, levels of arsenic found in
the soils at the site are within the range of natural levels.
January 1995
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Cleanup Approach
Response Action Status
Entire Site: The EPA conducted a thorough investigation in 1985 to determine the
type and extent of contamination at the site. The results of the investigation indicated
that the site poses no imminent health hazards to the public. Therefore, no cleanup
actions were deemed to be necessary. The site was deleted from the NPL in 1986.
Environmental Progress
The investigation of the site led to the determination that the site poses no danger to the
surrounding population or the environment. The Morris Arsenic Dump site has been deleted from
the NPL.
January 1995
MORRIS ARSENIC DUMP
-------
NAVAL INDU
RESERVE OR
PLANT
MINNESOTA
EPA ID# MN3170022914
Site Description
EPA REGION 5
Anoka County
Fridley
Other Names:
Naval Sea Systems Command
The Naval Industrial Reserve Ordnance Plant (NIROP) occupies 83 acres in an industrial,
commercial, and residential area of Fridley. NIROP has produced advanced weapons systems
since it was constructed in 1940. Paints, solvents, lubricants, oil, and plating wastes were, and
still are, generated at the site. Analyses conducted by the Minnesota Pollution Control Agency
(MPCA) found soil and groundwater on the site to be contaminated with solvents. In 1981, three
bedrock wells supplying drinking water to NIROP were taken out of service because of
trichloroethylene (TCE) contamination. The plant discontinued the use of TCE in 1987. FMC
Corporation, NIROP's operating contractor, owns a 18-acre site bordering on the south of the
site that was placed on the NPL in 1983. Over 200,000 people live within 3 miles of the site.
The Mississippi River is about 700 feet to the west. The water supply intake for Minneapolis is
located approximately 1,500 feet downstream of the site. An estimated 29,000 people obtain
drinking water from public wells within 3 miles of the site.
Site Responsibility:
This site is being addressed taough
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 07/14/89
Final Date: 11/24/89
Threats and Contaminants
On-site groundwater and soils are contaminated with solvents, including TCE and
methylene chloride. Highly permeable sands, conducive to the downward migration of
contaminants, lie below the facility. Potential health risks exist for individuals who
ingest or come into direct contact with contaminated groundwater or soil.
Cleanup Approach
The site is being addressed in three stages: initial actions and two long-term remedial phases
directed at cleanup of the entire site and cleanup of the contaminated soils on site.
January 1995
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Response Action Status
Initial Actions: From 1983 to 1984, the Army Corps of Engineers excavated a
trench and borrow pit consisting of 1,200 cubic yards of soil and approximately 43
barrels containing polychlorinated biphenyls (PCB) wastes, flammable solids, and
base solids. The excavated materials were removed to an EPA-regulated hazardous waste landfill.
Entire Site: In 1984, the MFC A requested that the Navy and FMC Corporation
determine the extent of surface water and groundwater contamination, locate any
additional disposal areas, and take cleanup action. In response, a network of
monitoring wells was installed to gather information on patterns of groundwater flow and
contaminant concentrations. The study was completed in 1988. The EPA decided to place
hydraulic barriers to contain and treat groundwater for the cleanup. Cleanup began in 1991 and is
expected to be completed in 1999.
Soil: An investigation of contaminated soils on site begin in 1991 and is expected to
be completed in early 1996, at which time cleanup remedies will be selected.
Site Facts: The site is being cleaned up as part of the Installation Restoration Program, a
program established by the Department of Defense (DOD) in 1978 to identify, investigate, and
control the migration of hazardous contaminants at military and other DOD facilities.
Environmental Progress
Initial actions to remove contaminated soil and other materials reduced the threat of exposure to
pollutants at the Naval Industrial Reserve Ordnance Plant while studies and cleanup remedies are
underway.
Site Repository
Anoka County Public Library, Fridley Branch, 410 N.E. Mississippi Street, Fridley, MN 55432
January '1995
NAVAL INDUSTRIAL RESERVE ORDNANCE PLANT
-------
NEW
ARDEN HILLS
MINNESOTA
EPA ID# MN7213820908
EPA REGION 5
Ramsey County
Arden Hills
Other Names:
Twin Cities Ammo. Plant
. Anthony Site
Site Description
The New Brighton/Arden Hills site is located in Arden Hills, approximately 2 miles north of the
twin cities of Minneapolis/St. Paul. The site consists of over 24 square miles of groundwater
contaminated with volatile organic chemicals (VOCs). The Twin Cities Army Ammunition Plant
(TCAAP), located to the north of St. Paul and Minneapolis, comprises the northeastern corner of
the New Brighton/Arden Hills site. According to the U.S. Army, VOCs are migrating off
TCAAP into the groundwater and the Prairie Du Chien/Jordan Aquifer. In 1981, the Minnesota
Pollution Control Agency (MPCA) and the Minnesota Department of Health detected VOC
contamination in the system used for municipal drinking water in New Brighton. Prior to these
findings, the City of New Brighton had constructed and operated a total of nine municipal wells.
From 1982 to 1984, the City shut down six wells, deepened two municipal wells to the Mt.
Simon/Hinckley Aquifer, and constructed three new wells. The City of St. Anthony, located
directly north of Minneapolis, is one of several communities that obtain their municipal water
supply from the Prairie Du Chien/Jordan Aquifer system. Following the detection of
contaminants in the New Brighton wells, the City of St. Anthony also detected contamination in
its three Prairie Du Chien/Jordan Aquifer wells, one of which was shut down early in 1984.
Since contaminants first were discovered, the levels have increased in the remaining undeepened
municipal wells. The site includes parts of the municipalities of Shoreview, Arden Hills,
Moundsview, New Brighton, and St. Anthony.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 07/16/82
Final Date: 09/08/83
Threats and Contaminants
Polychlorinated biphenyls (PCBs), chromium, arsenic, and VOCs including
trichloroethylene (TCE), benzene, toluene, and xylene have been detected in the
groundwater. Soil is contaminated with PCBs. Potential health risks exist for
individuals ingesting or coming into direct contact with contaminated groundwater.
February 1995
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Cleanup Approach
The site is being addressed in ten stages: immediate actions and nine long-term remedial phases
focusing on: the sewer line, groundwater, off-base contamination, south groundwater plume,
north groundwater plume, New Brighton Well #7, incineration of PCB-contaminated soils, source
control, and soils and groundwater within the TCAAP boundaries.
Response Action Status
Immediate Actions: Between 1983 and 1984, the EPA supplied bottled water to
many residences and businesses, extended the existing water supply system to the
New Brighton and Arden Hills private well users whose wells were found to be
contaminated, installed granular activated carbon filters on two wells to meet the peak
summertime demand, and treated the New Brighton/Arden Hills wells #5 and #6 with activated
carbon. All the nearby affected residents now are using either uncontaminated or treated water.
Sewer Line: The State conducted an investigation in 1987 to determine the type and
extent of contamination around a sewer line/force main that was used for TCAAP
waste transportation to the metropolitan waste district. The study shows no threat to
public health. The Army cleaned the sewer line and is storing the removed wastes on site until
further disposal is required.
Groundwater: In 1987, the EPA selected the remedy to address St. Anthony wells
#3, #4, and #5, which consisted of the construction of granular activated carbon
(GAC) water treatment facilities to remove VOCs from the wells. The treated water
will be discharged into the municipal water treatment plant and distribution system. A pipeline
was constructed to connect St. Anthony wells #3, #4, and #5 to the GAC treatment facility.
Long-term operation and maintenance of the water treatment system began in 1991 and will
continue until 1999.
Off-Base Contamination: In 1983, the State began an investigation to determine
the nature and extent of contamination off the Army base. The first study was
completed in 1986. The second study was completed in 1991. The U.S. Army
identified the alternative technologies for the cleanup in focused feasibility studies for the North
and South Plumes of off-base groundwater contamination.
South Groundwater Plume: In late 1992, a remedy was selected for the South
Plume incorporating the following elements: extraction of groundwater at the leading
edge of the South Plume; treatment of extracted groundwater to remove VOCs by a
pressurized granular activated carbon system; discharge of treated groundwater to the drinking
water supply of the City of New Brighton; and groundwater monitoring to verify the
effectiveness of the remedy. Design for cleanup of the South Plume remedy was completed in
the spriig of 1993. Construction of the remedy was completed in the spring of 1994.
February 1995 2 NEW BRIGHTON/ARDEN HILLS
-------
North Groundwater Plume: In the fall of 1993, a remedy was selected for the
North Plume incorporating the following elements: providing an alternative water
supply to residents with private wells with the North Plume; implementing drilling
advisories that would regulate the installation of new private wells within the North Plume as a
Special Well Construction Area; extracting groundwater at the containment boundary of the
North Plume near County Road E; pumping the extracted groundwater to the Permanent Granular
Activated Carbon Water Treatment Facility (PGAC) in New Brighton for removal of VOCs by a
pressurized GAC system; discharging all of the treated water to the New Brighton municipal
distribution system; and monitoring the groundwater to verify the effectiveness of the remedy.
Design for cleanup of the North Plume remedy is expected to be completed by mid-1995.
New Brighton Well #7: In 1986, the EPA selected a remedy to address potential
future contamination of New Brighton well #7, which involves the construction of a
new well into the Mt. Simon-Hinckley Aquifer system. However, in 1989, the EPA
signed an amendment to this remedy, because the Army agreed to provide the City with over 4
million gallons per day of drinking water, thus eliminating the need for construction of an
additional well. In 1987, the Army also agreed to provide the results of water quality monitoring
for Well #7 and to construct a barrier system to prevent future contamination. These cleanup
activities were completed in 1989.
Incineration of PCB-Contaminated Soils: In 1989, following the investigation of
on-site soil contamination, the Army and the EPA selected incineration of the PCB-
contaminated dirt in a mobile incinerator as the soil cleanup remedy. The incineration
was completed within a month. Certificates of destruction of the ash waste were submitted in
1990, completing this action.
Source Control: In 1987, to address the source of the groundwater contamination,
the EPA, the MPCA, and the Army initiated the operation of a 6-well system to
extract groundwater migrating from the southwestern corner of TCAAP and treat it
with air stripping. Approximately 300,000 gallons per day are used in the plant, with the
remainder being disposed of by reinjection/infiltration through the arsenal sand and gravel pit.
Operating data and monitoring results are evaluated and additional measures will be taken, if
necessary, to ensure that any contaminated groundwater migrating from the site is captured.
Currently, there is a 17-well extraction system in operation. All water is air-stripped, and some is
carbon-filtered for the military base's drinking water supply. Operation of this system is expected
to continue until the entire site cleanup is complete.
Soils and Groundwater within TCAAP Boundaries: The U.S. Army initiated
an investigation in 1988 to study technologies to be used in cleaning up contamination
source areas found on the TCAAP base. During the investigation, the areas are being
evaluated for the need and type of cleanup. The study is expected to be completed in 1995. Initial
results have identified three areas as the major sources of organic solvents contaminating local
groundwater. A remedy specifying on-site TCAAP cleanup action is expected to be selected in
1995, with the implementation of final remedies for contaminated groundwater, surface water,
soils, and sediments expected to begin in late 1995 and be completed by 1999.
NEW BRIGHTON/ARDEN HILLS 3 February 1995
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Site Facts: The U.S. Army Twin Cities Ammunition Plant is participating in the Installation
Restoration Program (IRP), a specially funded program developed by the Department of Defense
(DOD) in 1978 to identify, investigate, and control the migration of hazardous contaminants on
military and other DOD installations.
Environmental Progress
By supplying the affected residents with a safe drinking water supply, incinerating the
PCB-contaminated soils, and constructing the water treatment system, the potential for contact
with hazardous materials from the New Brighton/Arden Hills site has been reduced while further
investigations and ongoing and completed cleanup activities of the other areas of the site are
taking place.
Site Repository
New Brighton City Hall, Vault Area, 803 Fifth Avenue, N.W., New Brighton, MN 55112
February 1995
NEW BRIGHTON/ARDEN HILLS
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NL INDUST
TARACORP/
GOLDEN AU
MINNESOTA
EPA ID# MND097891634
EPA REGION 5
Hennepin County
St. Louis Park
Other Names:
Northwestern Metal Works
Taracorp Ind.
National Lead Taracorp
Site Description
The NL Industries/Taracorp/Golden Auto site is located in St. Louis Park, just west of
Minneapolis. The site consists of two neighboring properties, one formerly owned by Taracorp,
Inc., and the other currently owned by Morris and Harry Golden. Metal refining, fabricating,
and associated activities were conducted at the site until 1903, when the secondary lead smelting
operation was started. The secondary smelting operations produced a number of products,
including sheet lead solder, shotgun lead pellets, lead wool, lead pipe, powdered lead, and
secondary lead ingots. Historically, solid waste generated by the manufacturing facilities was
stored on site in a slag storage area. Liquid wastes were discharged through process sewers,
which ran under the site to the municipal sewer system. NL Industries, Inc., formerly the
National Lead Company, bought the site in 1928. NL Industries operated a lead smelting plant on
the site from 1940 until 1979. Plant operations included recovering lead from lead plates, battery
fragments, and lead containers. Lead smelting operations and disposal practices resulted in
elevated levels of lead in the air and in on-site soils. In 1962, NL Industries, Inc. sold a 4Vi-acre
portion of the property to Republic Enterprises, which, in turn, sold the property to Morris and
Harry Golden, who used the land for an auto wrecking and used auto parts business from 1964
until 1983. Currently, that land is leased by Quality Auto Body, also a used auto parts and
wrecking company. NL sold the lead smelting operation and the remaining property to Taracorp,
Inc. in 1979. The smelter remained in operation until its closure in 1981. There are residential
areas within 14 mile of the site. Aquifers beneath the site serve as a primary source of drinking
water in the area, supplying 90 percent of all groundwater used in the region. Marshy areas exist
approximately 1,000 feet from the site, and there is a pond about 500 feet to the northwest.
Minnehaha Creek is about a mile away, and the Mississippi River is approximately 3 miles
northwest of the site.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/22/81
Final Date: 09/08/83
January 1 995
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Threats and Contaminants
Groundwater in the vicinity of the site was found to be contaminated with elevated
levels of sulfates, dissolved solids, and lead. The pH level in the groundwater also
was low. Off-site soils have shown elevated levels of lead, although levels are
generally well below the standard levels for lead in soil established by the State.
On-site soils were found to contain highly elevated levels of lead. Also present on the
site were battery fragments, lead-bearing debris, and slag. Health risks may have
existed for individuals who ingested or came into direct contact with the contaminated
soils or groundwater.
Cleanup Approach
The site is being addressed in two long-term remedial phases focusing on cleanup of the
groundwater and on-site soils and cleanup of the off-site soils.
Response Action Status
Groundwater and On-Site Soils: Under a Consent Order, NL Industries, Inc.
conducted on-site investigations and cleanup activities between 1985 and 1988. These
activities included: restricting access to the site; removing contaminated on-site soils
to a federally approved facility and replacing the excavated area with clean soils; revegetating the
excavated area; paving areas with asphalt to minimize exposure to contaminated soil; cleaning
and demolishing several on-site buildings; and long-term monitoring of groundwater. The
groundwater will continue to be monitored for 30 years. Results to date indicate no measurable
movement of contaminants from the soils into the groundwater. If contaminant levels exceed
standards, further cleanup actions will be taken.
Off-Site Soils: A risk assessment conducted by NL Industries in 1987 and a similar
study conducted by the EPA both concluded that the lead in soils near the NL
Industries site does not presently pose a risk to public health and the environment.
Based on these results and the recommendations of the Minnesota Pollution Control Agency
(MPCA), the Minnesota Department of Health, and the Agency for Toxic Substances and Disease
Registry (ATSDR), the EPA recommended in 1988 that no further action was necessary with
regard to off-site soils near the site.
Environmental Progress
Cleanup goals for the site have been fully achieved. Based on a consensus of recommendations
from the various agencies involved in the investigations of the site conditions, it was agreed that
the site requires no further cleanup actions. The EPA will continue to monitor the groundwater to
ensure that the contaminant levels do not exceed State standards. The NL Industries site will not
be deleted from the NPL until the EPA is absolutely certain the site poses no threats to the
public.
January 1995 ~ 2 NL INDUSTRIES/ TARACORP/ GOLDEN AUTO
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Site Repository
St. Louis Park City Hall, 5005 Minnetonka Boulevard, St. Louis Park, MN 55416
NL INDUSTRIES/ TARACORP/ GOLDEN AUTO 3 January 1995
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NUTTING TRUgK
CASTER COM
MINNESOTA
EPA ID# MND006154017
EPA REGION 5
Rice County
Fairbault
Site Description
The 11-acre Nutting Truck & Caster Company site was used for the production of various
manufacturing tools, beginning in 1891. Sludge from manufacturing wastes was disposed of in an
unlined pit from 1959 to 1979. In 1979, the Minnesota Pollution Control Agency (MPCA) issued
a notice of non-compliance to the company. In response to this notice, Nutting excavated the pit,
backfilled it with clean fill, and paved over the area. The MPCA required the company to
investigate the soil and groundwater in the area. Monitoring wells were installed and
trichloroethylene (TCE) contamination was discovered in on-site monitoring wells in the upper
aquifer. In 1984, the manufacturing operations were moved to another location. The property
presently is unused. The population of the City of Fairbault is approximately 16,500. The city is
served by a municipal water system.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
The groundwater is contaminated with various volatile organic compounds (VOCs).
Cadmium also was detected in the groundwater directly under the disposal pit.
Potential health threats included drinking or coming in direct contact with
contaminated groundwater.
February 1995
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Cleanup Approach
Response Action Status
Interim Actions: The potentially responsible parties placed two extraction wells in
the aquifer. The contaminated water is being treated by a passive aeration system
before being discharged to a nearby creek.
Entire Site: The company completed an investigation of groundwater contamination
in 1986. As part of site investigations, a groundwater monitoring system was put in
place. Based on the findings of the investigation, the EPA decided to clean up the
groundwater by extracting and treating groundwater, then discharging it into a storm sewer.
Construction of the remedy was completed in mid-1992. A five-year review of the cleanup action
was completed in early 1994. The report concluded that the groundwater treatment is continuing
to be protective of human health and the environment.
Site Facts: A Consent Order was signed in 1984 by the MPCA and Nutting, requiring Nutting
to conduct an investigation of the extent of groundwater contamination originating from its
property.
Environmental Progress
All construction at the site is complete. The groundwater treatment systems installed at the
Nutting Truck & Caster Company site have eliminated the potential for exposure to contaminated
groundwater.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
February 1995 2 NUTTING TRUCK & CASTER COMPANY
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OAK GROV
SANITARY U
MINNESOTA
EPA ID# MND98090405
EPA REGION 5
Anoka County
Oak Grove Township
Site Description
The 104-acre Oak Grove Sanitary Landfill site was operated as an open dump until 1971, when
the Minnesota Pollution Control Agency (MPCA) issued a permit to the owner for a sanitary
landfill. In 1976, operations were taken over by Northwest Disposal Inc., until closure in 1984.
Approximately 2J/2 million cubic yards of wastes including garbage, various sludges and acids,
pesticide manufacturing waste, paint, cutting oils, cleaning solvents, and inks were disposed of at
the landfill. The Minnesota Department of Health sampled nine nearby residential wells in 1984.
The wells are screened in a sand aquifer, which is the primary water supply source in the area.
Samples from three wells indicated the presence of several volatile organic compounds (VOCs)
and metals. Subsequent resampling did not detect these compounds. In 1985, lime sludge was
used as a cover for part of the landfill. Approximately 330 people live within a mile of the site,
and 9,800 live within 4 miles. The majority of these residents depend on water from wells. A
creek flows through the site and is adjacent to a wetland, discharging to the Rum River 2 miles
from the site.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties.
NPL LISTING HISTORY
Proposed Date: 10/15/84
Final Date: 06/10/86
Threats and Contaminants
Methane and VOCs were detected beneath the lime sludge cover material. VOCs,
phenols, phthalates, and heavy metals were detected in the upper aquifer. Leachate
samples indicated the presence of VOCs, phenols, and heavy metals. Several VOCs,
phenols, and heavy metals were found in sediment samples and surface water at the
site. Leachate discharges to a nearby wetland, thereby potentially threatening the
wetland and the connected Cedar Creek. Potential human health risks exist from
ingestion or direct contact of the contaminated soil, sediments, or leachate. Drinking
contaminated ground water from the upper aquifer also may pose health risks.
However, the lower aquifer, which is used for residential drinking water, does not
pose a risk to human health.
February 1995
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Cleanup Approach
Response Action Status
Source Control: In 1988, the MPCA and the EPA selected the following cleanup
actions for the site: installation of a security fence; capping with a multi-layer cover
system; installation of a topsoil cover and vegetation; enforcement of deed
restrictions; consideration of treatment options for air emissions from gas vents after construction
of the final cover; and air and groundwater monitoring. The EPA issued a Unilateral
Administrative Order in early 1992 requiring the potentially responsible parties to design and
implement the cleanup technologies. Cleanup activities began in the spring of 1992 and were
completed in the fall of 1993.
Groundwater: In late 1990, the EPA selected a remedy, which includes long-term
monitoring of the shallow and deep aquifers, surface waters, and sediments. In
addition, institutional controls on the installation of drinking water wells around the
landfill will be implemented, and non-essential water wells will be properly plugged and
abandoned. A long-term monitoring system was completed in the fall of 1993.
Site Facts: The EPA sent Special Notice letters to the potentially responsible parties in March
1991 to conduct cleanup activities. The design and implementation of the source control remedies
were accomplished under a federally issued Unilateral Administrative Order issued in 1992. The
EPA issued a Unilateral Administrative Order in early 1992 requiring the potentially responsible
parties to install a long-term monitoring system.
Environmental Progress
Construction at the site has been completed. Fencing, capping, deed restrictions, and monitoring
have eliminated the threats to public health and the environment. A Five Year Review of the
effectiveness of the remedies is scheduled to be completed in 1997.
Site Repository
Oak Grove Township Board, 1990 Northwest Nightingale Street, Cedar, MN 55011
February 1995 2 OAK GROVE SANITARY LANDFILL
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OAKDALE
MINNESOTA
EPA ID# MND980609
EPA REGION 5
Washington County
Oakdale
Other Names:
Abresch Barrel & Drum Company
Site Description
The 40-acre Oakdale Dump site consists of three disposal areas. Two of the areas were burial
areas, and one was a burning area. The burial areas were owned and operated by the Abresch
Drum and Barrel Company from the mid-1940s to 1961. Aerial photos reveal that the greatest
activity at the burial operations occurred in the late 1950s, when large trenches were dug with
heavy equipment, and drums containing chemical wastes were disposed of in the trenches. In
1961, the disposal of wastes at the site ceased and the property later was sold to several parties.
The site was left vacant, covered with rusted drums, pails, and a variety of industrial wastes.
Groundwater pollution was detected, forcing the closing of two community wells and a number
of private wells within the City of Oakdale. Approximately 600 private wells are within a mile of
the site, and approximately 540 people live within a mile. More than 44,000 people live 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: 10/22/81
Final Date: 09/08/83
Threats and Contaminants
Groundwater is contaminated with various volatile organic compounds (VOCs). Since
the cleanup activities were conducted by the Minnesota Mining and Manufacturing
Corporation (3M), one of the potentially responsible parties, the potential health risks
have been eliminated.
Cleanup Approach
This site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
February 1995
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Response Action Status
Entire Site: Under an agreement reached in 1983 between 3M, the Minnesota
Pollution Control Agency, and the EPA, 3M handled the necessary arrangements and
payments for the reconstruction of multi-aquifer wells and removal of concentrated
waste deposits, the installation of a shallow groundwater pump-out system, and the establishment
of a monitoring well network. The majority of this work was performed in 1984 and 1985. The
groundwater extraction and treatment system will continue to operate until established cleanup
goals for the site are met.
Environmental Progress
Continued operation of the groundwater pump and treatment system will serve to protect nearby
residents and the environment.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 551552
February 1 995
OAKDALE DUMP
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OLMSTED CO
SANITARY LA
MINNESOTA
EPA ID# MND000874354
EPA REGION 5
Olmsted County
Oronoco
Other Names:
Rochester Landfill
Oronoco Sanitary Landfill
Site Description
The 50-acre Olmsted County Sanitary Landfill was owned and operated by the City of Rochester
and was licensed by the Minnesota Pollution Control Agency (MFCA). The first cell of the
landfill was constructed without a liner or a system for collecting leachate. The liner for the
second cell was poorly constructed, but the third and fourth cells were properly built. The landfill
has operated since 1972 and has accepted various industrial wastes including electroplating
sludge, asbestos, transformers, paint, and solvents. A large amount of flood-soaked material was
put into the landfill in 1977. By 1984, groundwater under the landfill was heavily contaminated
with leachate from the waste pile. There were extensive leachate seeps at the site. Also, an
intermittent stream, which runs through the site to the Zumbro River, could carry contaminants
during heavy rains. In 1984, the County of Olmsted assumed ownership and operation of the
landfill. Approximately 200 people live within 1 mile of the site. It is estimated that 1,200 private
wells are located near the landfill.
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
Groundwater is contaminated with various volatile organic compounds (VOCs) and
heavy metals including chromium, cadmium, and lead. People who use contaminated
groundwater supplies or inhale vapors from them may be exposed to hazardous
chemicals from the site. Groundwater under the landfill is likely to discharge into the
nearby Zumbro River, potentially contaminating area surface waters and sediments.
February 1995
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Cleanup Approach
Response Action Status
Entire Site: The County of Olmsted started a study of contamination at the site in
early 1991, which includes an analysis of the groundwater, surface water, and
sediments to define the problem and assess possible cleanup alternatives. The County
is conducting a dye tracing study to identify the flow pattern of groundwater in and around the
site. The study was completed in 1993. In the summer of 1994, responsibility for the site was
transferred to the MFC A. The EPA determined that no further action was required on their part
and is moving forward with plans to delete the site from the NPL.
Site Facts: In 1989, the MPCA signed a Consent Order with Olmsted County to carry out a
study of the nature and extent of contamination at the site and to conduct final cleanup activities.
Environmental Progress
After adding this site to the NPL, the EPA performed site investigations and determined that no
federal actions were required at the Olmsted County Sanitary Landfill site. The site is expected to
be deleted from the NPL in 1995.
Site Repository
Rochester Public Library, 11 First Street, Southeast, Rochester, MN 56573
February 1995
OLMSTED COUNTY SANITARY LANDFILL
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PERHAM AR
SITE
MINNESOTA
EPA ID# MND980609572
EPA REGION 5
Otter Tail County
Perham
Other Names:
Perham Fairgrounds
Site Description
The State of Minnesota established the V4-acre Perham Arsenic Site to mix pesticides in the 1930s
and 1940s. This was part of the U.S. Department of Agriculture's (USDA) program to control an
outbreak of grasshoppers that threatened crops throughout the Midwest. At that time, the USDA
provided all midwestern states with pesticides to control the infestation and helped them establish
numerous stations to mix the chemicals used in the program. Approximately 200 to 2,500 pounds
of pesticides were buried between what is now the cattle shed of the county fan-grounds and a
building of the Hammers Construction Company. The EPA believes the pesticides were buried
around 1947, after the USDA ended its program against the infestation. In 1971, the Hammers
Construction Company purchased property from the City of Perham to build offices and a
warehouse. In 1972, the company installed a shallow well to provide water to the facility. Eleven
employees were poisoned with arsenic when they drank water from the well. The well was
capped, and the City of Perham extended its municipal water supply to the facility.
Approximately 2,000 people live in the City of Perham.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater and soil on the site are contaminated with arsenic. Potential health
threats include ingesting or coming in direct contact with contaminated groundwater or
soil.
February 1995
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Cleanup Approach
This site is being addressed in two phases: initial actions and a long-term remedial phase focusing
on cleanup of the entire site.
Response Action Status
Initial Actions: In 1982, the City of Perham capped the site with a plastic film and
clay soil to reduce the amount of arsenic that could leach through the soil as a result
of rain and snow. In 1985, the State excavated approximately 200 cubic yards of
arsenic wastes in the burial pit and disposed of the wastes in a hazardous waste landfill. The State
filled the pit with clean soil, placed an impermeable membrane and clay cap over the pit, and set
up a program to monitor the groundwater. The city extended its municipal water supply to the
affected residents and workers at the Hammers Construction Company.
Entire Site: In 1991, the EPA began a study into the nature and extent of
groundwater and soil contamination and alternatives for cleaning up contamination at
the site. In early 1994, the study was completed and a remedy was selected. The
remedy selected includes: installation of three extraction wells in the Fairgrounds area; filtration
and aluminum adsorption of surface water to remove arsenic; and filtration of the water
upgradient from the plume. Design of the remedy began in the fall of 1994 and is scheduled for
completion in 1995.
Environmental Progress
Excavation of contaminated soil, capping, and groundwater monitoring at the Perham Arsenic
Site have reduced exposure to contaminated soil and groundwater while cleanup activities are
being planned.
Site Repository
Perham Public Library, 100 Third Street, Northeast, Perham, MN 56573
February 1 995 2 PERHAM ARSENIC SITE
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PINE BEND S
LANDFILL
MINNESOTA
EPA ID# MND000245795
EPA REGION 5
Dakota County
Inver Grove Heights
Other Names:
merican Demolition Landfill
Site Description
The 252-acre Pine Bend Sanitary Landfill site is an active facility that accepts various wastes into
two adjacent landfills. Browning Ferris Industries owns the landfill and allowed Phoenix, Inc., a
subsidiary, to operate it since 1972. Through the intervening years, the landfill produced leachate
containing arsenic, halogenated and non-halogenated organic compounds, and various chlorides.
The EPA and the State analyzed the groundwater and soils on site and discovered contamination
from leachate. The EPA found volatile organic compounds (VOCs) and polycyclic aromatic
hydrocarbons (PAHs) in wells that monitor groundwater in the shallow aquifer and in residential
and commercial wells that draw water from that same source. Approximately 50 people live
within a 1-mile radius of the site. Approximately 16,000 people live in the town of Inver Grove
Heights, 3 miles north of the landfill. Several wells of private residences are contaminated with
heavy metals, VOCs, and PAHs. Eight private residences now use bottled water that is provided
by the site owners. The site is approximately 3/4 of a mile west of the Mississippi River and is
bordered by farms, food processing plants, chemical manufacturers, an oil refinery, a pumping
station for natural gas, an asphalt plant, an installation for electrical utilities, and residences. The
site is fenced, and there are check-in stations at the gates of the landfills to enforce security
restrictions.
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
ZGJ
Leachate from the landfills and surface water contain arsenic, halogenated and non-
halogenated organic compounds, and various chlorides. Groundwater is contaminated
with VOCs and PAHs. People could be exposed to contaminants from the site through
drinking or coming in direct contact with contaminated groundwater, or by eating
crops grown in private gardens irrigated with contaminated well water.
March 1995
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Cleanup Approach
This site is being addressed in three stages: initial actions and two long-term remedial phases
focusing on providing an alternate water supply, and controlling the source of contamination and
cleaning up groundwater.
Response Action Status
Initial Actions: The site owner is providing bottled water to eight residences until
an alternate water supply can be provided.
Alternate Water Supply: The State of Minnesota completed a study in preparation
for providing an alternate water supply to area residents and homes. The EPA made a
final selection of the water supply plan in 1991. Design of the remedy was completed
and construction began in the spring of 1993. Affected residents will continue to receive bottled
water until the alternate water supply system is completed, scheduled for 1995.
Source Control and Groundwater: The State of Minnesota began an extended
study to determine the extent and nature of site contamination and to identify cleanup
alternatives for the landfill areas and other sources of site contamination. The study is
expected to be completed in 1995.
Site Facts: In 1985, the State entered into an agreement with Pine Bend Sanitary Landfill and
the adjacent Crosby American Demolition Landfill to conduct investigations.
Environmental Progress
The provision of bottled water has reduced the threat of exposure to contaminants at the Pine
Bend Sanitary Landfill site while construction of the water supply plan is being completed and
further investigations are underway.
Site Repository
Dakota County Library System, Wescott Branch 1340 Wescott Road, Eagan, MN 55123
March 1995 2 PINE BEND SANITARY LANDFILL
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REILLY TAR
CHEMICAL
CORP. (ST. L
PARK PLANT)
MINNESOTA
EPA ID# MND980609804
EPA REGION 5
Hennepin County
St. Louis Park Plant
Other Names:
lly Tar & Chemical Republic
Creosoting Company
Site Description
The 80-acre Reilly Tar & Chemical Corp. (St. Louis Park Plant) site is an inactive facility that
was used for coal tar distillation and wood preserving from 1917 to 1972. The site was sold and
converted into recreational and residential areas in 1972. Highway and storm sewer
improvements also were constructed on the site in 1972. Wastes from site operations were
disposed of on the site and in a network of ditches that discharged to an adjacent wetland. The
wastes contained many compounds, including polycyclic aromatic hydrocarbons (PAHs). Soil and
groundwater below the wetland and the southern portion of the site are heavily contaminated. The
site is located in St. Louis Park, a western suburb of Minneapolis, with a population of
approximately 43,000 people. Portions of the northern end of the site have been developed as a
residential complex. Seven municipal wells have been closed due to PAH contamination.
Site Responsibility:
This site is being addressed through
Federal, State, Municipal, and
potentially responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/22/81
Final Date: 09/08/83
Threats and Contaminants
Groundwater is contaminated with petrochemicals and various volatile organic
compounds (VOCs). Sludges and soils are contaminated with petrochemicals and
creosotes from wood preserving activities. The wetland adjacent to the site is
threatened by the contaminants that have been discharged from the site. The potential
health risks to people include drinking or coming in direct contact with contaminated
groundwater, inhaling contaminated vapors, or coming into direct contact with or
ingesting contaminated soils and sludge.
January 1995
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Cleanup Approach
This site is being addressed in five stages: immediate actions and four long-term remedial phases
focusing on water treatment and contamination source control, groundwater aquifer control, and
cleanup of the Drift, St. Peter Aquifer, and Platteville Aquifers.
Response Action Status
Immediate Actions: In 1982 and 1983, the State cleaned out two deep wells on the
site and conducted a complete off-site well survey. The State also performed a water
treatability study on the closed municipal wells.
Water Treatment and Contamination Source Control: The cleanup option
selected to address water treatment and contamination source control includes the
construction and operation of a granular activated carbon water treatment system at
two existing contaminated municipal wells. The parties potentially responsible for site
contamination constructed this water treatment system, which has been fully operational since
1985.
Groundwater Aquifer Control: The cleanup methods selected to address
groundwater and aquifer contamination include: monitoring, extracting, and treating
the groundwater from various aquifers to maintain drinking water quality and to
prevent down gradient contamination of the aquifers; capping and filling exposed hazardous
wastes in the vicinity of the peat bog; implementing deed restrictions for current and future land
use; and completing further investigations into the nature and extent of contamination in the
northern area of the Drift Platteville and St. Peter Aquifers. In 1986, the City of St. Louis Park
proceeded with the filling of exposed hazardous wastes in the vicinity of the peat bog. Five areas
of the wetland were filled to prevent further spread of contamination into the food chain. The
filling activity was completed in 1986. The potentially responsible parties, under EPA guidance,
began monitoring and extracting water from contaminated plumes to prevent the further migration
of contaminants. Groundwater extraction is expected to continue until late 1995. Deed restrictions
on future commercial and residential construction at the site were put in place in 1989. An
existing municipal well in the Prairie du Chien Aquifer will be used as a gradient control well to
prevent the spread of contamination. This well became operational in 1992.
Drift Aquifer: The potentially responsible parties, under EPA oversight, conducted
an investigation into the nature and extent of aquifer contamination to determine
whether a higher capacity well pump should be installed in an existing well or a new
gradient-control well should be constructed. A remedy was selected in 1992 that calls for a pump
and treat system that discharges water to a publicly-owned water works. Construction began in
mid-1994 and is expected to be completed in early 1995.
January 1995 2 REILLY TAR & CHEMICAL CORP.
(ST. LOUIS PARK PLANT)
-------
St. Peter Aquifer: The potentially responsible parties, under EPA supervision,
conducted an investigation of the St. Peter Aquifer to determine whether a higher
capacity well pump should be installed in an existing well or a new gradient control
well should be constructed. The investigation was completed in 1990 and a remedy was selected
which involves extracting and treating groundwater from the aquifer. Initially, the water will
discharge to a local treatment plant. This situation will be evaluated at a later date, and treated
water may be discharged to a surface water body after being treated with a carbon adsorption
process on site. Implementation of the remedy began in 1991.
Platteville Aquifer: The potentially responsible parties, under EPA oversight, are
conducting an investigation into the nature and extent of contamination of the
Platteville Aquifer to determine an appropriate cleanup remedy. The investigation is
scheduled for completion in 1995.
Site Facts: In 1984, the EPA issued an order to Reilly Tar & Chemical Corp., a potentially
responsible party, requiring the company to construct and install a granulated activated carbon
drinking water system. In 1986, Reilly Tar & Chemical Corp. signed a Consent Decree,
requiring them to finance cleanup activities at the site. The Consent Decree also required the
company to conduct investigations into the nature and extent of contamination in the Drift,
Platteville, and St. Peter Aquifers.
Environmental Progress
The immediate actions described above began treating the contaminated groundwater and
removing the sources of contamination. These actions have greatly reduced the potential for
exposure to contaminated groundwater at the Reilly Tar & Chemical Corp. (St. Louis Park Plant)
site while further investigations and cleanup activities take place. Upon selection and
implementation of a remedy for the Platteville Aquifer, all contamination at the site will have
been addressed.
Site Repository
St. Louis Park Library Branch, 3240 Library Lane, St. Louis Park, MN 55426
REILLY TAR & CHEMICAL CORP.
(ST. LOUIS PARK PLANT)
January 1995
-------
RITARI POST
&POLE
MINNESOTA
EPA ID# MND980904064
EPA REGION 5
Wadena County
iles northwest of Sebeka
Site Description
The 212-acre Ritari Post & Pole site is an inactive wood preserving facility that has been in
operation since 1959. The wood preserving operation used creosote as a preservative up until
1966, then changed to pentachlorophenol (PCP). From 1966 to 1973, the site used a process that
allowed approximately 27,000 gallons of PCP to drip from treated wood directly onto the
ground. In addition, approximately 3,200 gallons of PCP-contaminated sludge were applied
directly to the ground. The site is partially fenced. There are approximately 350 people living
within 3 miles of the site. Several on-site monitoring wells and a private well located less than
500 feet away from the site are contaminated with PCP. The private well has been replaced by a
new well into a deeper uncontaminated aquifer. The site is located 3/4 mile from a wetland area
draining into the Cat River. The river is used for recreation.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 01/22/87
Final Date: 07/21/87
Threats and Contaminants
On-site groundwater is contaminated with PCP, phenols, and dioxin. Potential health
threats include using contaminated groundwater for household purposes and crop
irrigation. Also, contamination of the food chain is possible if contaminants move into
the adjacent wetlands and the small creek that drains into the Cat River.
Cleanup Approach
This site is being addressed hi a long-term remedial phase focusing on cleanup of the entire site.
February 1995
-------
Response Action Status
Entire Site: In the summer of 1994, the State completed an investigation into the
nature and extent of contamination at the site, which resulted in the selection of final
cleanup remedies. Soil and preliminary groundwater sampling conducted at the site
revealed the presence of dioxins. The selected remedy includes: bioremediation for PCP-
contaminated soils; excavation and incineration of dioxin-contaminated soils, if soil washing is
determined to be infeasible; and groundwater monitoring. Design activities are scheduled to begin
in 1995.
Environmental Progress
After adding this site to the NPL, the EPA performed site investigations and determined that no
immediate actions were required at the Ritari Post & Pole site while final cleanup activities are
being planned.
Site Repository
Wadena Public Library, 304 First Street, Southwest, Wadena, MN 56482
February 1995
RITARI POST & POLE
-------
SOUTH AND
MINNESOTA
EPA ID# MND9806096lfa
EPA REGION 5
Anoka County
A^idover, 16 miles northeast of
Minneapolis
Other Names:
Heidelberger Cecil Musket Ranch
Pumpkin City Investments
Musket Ranch
Andover Sites
Site Description
The South Andover Site is composed of several parcels of land totaling approximately 50 acres.
The individual parcels of land are located adjacent to one another and are independently owned
and used. Several small businesses involved with used auto part sales, auto salvage operations,
and auto body repair are situated adjacent to the site. From 1954 until 1981, the majority of these
properties were involved with waste disposal and salvage operations. The Cecil Heidelberger
property stored drums containing inks and solvents. Approximately 75 percent of the
Heidelberger property was later covered with an estimated 3 million tires. Thousands of barrels
of solvents and inks reportedly were burned in open pits on the Batson property. A wetland on
the property was used as a disposal area prior to filling. The Charles Mistelske property was
used to store approximately 8,300 gallons of paints, adhesives, and greases in 1-, 2-, and 55-
gallon containers. The Meyer property was used to store approximately 200 drums of chemical
waste. Spillage of chemical waste is known to have occurred at this location. Drummed waste
and transformers were stored on the Klar property. Transformers, salvaged electrical equipment,
empty drums, and miscellaneous debris are evident on the site. Waste processing stopped in
1977, and waste was not accepted after 1978, when the property was sold to Parmack, Inc. In
1980, the State issued notices of violation for improper storage and disposal of chemical wastes.
The site is located 3,000 feet from the Waste Disposal Landfill, another NPL site. The City of
Andover has a population of 13,000. The area 1/4 mile north of the site is a residential
neighborhood with about 170 homes. Five residences are located on site. Further development is
planned to the west and south of the site. Several commercial ventures, including auto part and
salvage operations, currently operate on site.
Site Responsibility:
This site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 10/22/81
Final Date: 09/08/83
February 1995
-------
Threats and Contaminants
Low levels of volatile organic compounds (VOCs) were detected in groundwater at the
site. However, the compounds detected did not exceed any regulatory levels, and they
do not pose a risk to public health or the environment. The contaminant levels for
arsenic were exceeded in only one groundwater sample taken from a shallow on-site
monitoring well. No on-site source of arsenic could be found. Surface soils were
contaminated with polychlorinated biphenyls (PCBs), antimony, lead, and polycyclic
aromatic hydrocarbons (PAHs). Surface soil contamination was limited to several "hot
spots" less than 6-feet deep. The health threat of greatest concern to people is coming
in direct contact with contaminated soil. Recent sampling of groundwater indicates that
no contaminants exist in the residents' potable water supply.
Cleanup Approach
Response Action Status
Immediate Actions: In 1981, approximately 700 drums were disposed of by
mixing the contents with waste oil and using the mixture as fuel. An estimated 600
drums were removed from the site by the potentially responsible parties in 1986 and
were disposed of in a federally approved facility. In 1989, the EPA constructed a fence around
the unfenced portion of the site and posted warning signs in an effort to limit site access. Also in
1989, the EPA, in conjunction with the State, completed shredding and removing the tires from
the site.
Groundwater: The EPA and the Minnesota Pollution Control Agency (MPCA) have
amended the groundwater remedy to delete three of the four cleanup components
selected in 1988 since the compounds detected did not exceed health-based levels.
These components included: pumping groundwater from the surface aquifer; supplying city water
to private well users; and placing restrictions on new wells. However, groundwater, surface
water and sediment monitoring, begun in the fall of 1994, will continue for 3 years. Ten
monitoring wells and one residential well will be sampled twice a year. After the third year of
monitoring, data will be reviewed to determine if further monitoring is necessary. Wells will be
immediately resampled if cleanup levels are exceeded. If resampling confirms that cleanup levels
have been exceeded, further actions will be taken. Wells which are not being monitored will be
properly plugged and abandoned.
Soils, Surface Water, and Sediment: The EPA selected a cleanup remedy in 1991 which
involved excavating and biologically treating 2,100 cubic yards of PAH-contaminated soil from
three isolated areas. Treatment occurred in an above-ground unit and treated soil was returned to
the site as clean fill. The remaining 9,300 cubic yards of PCB-, PAH-, lead- and antimony-
contaminated soil from four other isolated areas were taken to a permitted landfill for final
disposal. The selected cleanup remedy also included sampling of surface water and sediments
from two wetlands on and adjacent to the site. The parties potentially responsible for site
contamination completed the cleanup remedies in late 1994.
February 1995 2 SOUTH ANDOVER SITE
-------
Site Facts: In 1976, the State issued a Citation of Violation to Cecil and Marian Heidelberger
for unregulated chemical waste storage. In 1982, the EPA notified 16 potentially responsible
parties that they may be liable for cleanup at the site. An early investigation of the site was
initiated by the State in 1973, after a citizen lodged a complaint of suspected contamination in a
residential well. In August 1993, a two party Consent Decree was entered in the federal courts
between U.S. EPA and sixteen settling defendants. The Consent Decree compelled the settling
defendants to design and implement the groundwater and soil remedies.
Environmental Progress
All construction at the site is complete. By removing contaminated drums, fencing the area of
contamination, and removing numerous tires from the site, the potential for direct exposure to
hazardous materials at the South Andover Site facility has been reduced while activities leading to
the final cleanup of the site take place.
Site Repository
Andover City Hall, 1685 Crosstown Boulevard, Northwest, Andover, MN 55403
SOUTH ANDOVER SITE
February 1995
-------
ST. LOUIS R
MINNESOTA
EPA ID# MND03904543
Site Description
EPA REGION 5
St. Louis County
lies southwest of Duluth's central
business district
Other Names:
U.S. Steel Corp. Duluth Workshop
Interlake/Duluth Tar
The 640 acre St. Louis River Site contains two different areas: the St. Louis River/Interlake/
Duluth Tar Area and the U.S. Steel or USX area. These areas are separated by 4 miles of river.
The USX Corporation began operation of an integrated steel mill on this site in 1915. Operations
included coke and iron production, open hearth steel production, rolling, and wire milling. The
USX Duluth Works closed in 1979; however, the wire mill building was used by the lessee until
1987. There is extensive contamination of the sediments, soil, surface water, and groundwater
with coke and tar products, which contain high concentrations of poly cyclic aromatic
hydrocarbons (PAHs). The St. Louis River and associated wetlands run along the eastern and
southern sides of the site. The Interlake/Duluth Tar area is located about 3 miles from Duluth. It
occupies 230 acres, consisting of the 54th Avenue Peninsula, a boat slip, the Hallett Peninsula,
the Stryker embayment, and the Keene Creek Bay. The Hallett Peninsula has a long history of
industrial use for pig iron manufacturing, coking operations, and related industries from the late
1800s to about 1962. Zenith Furnace Company began operating a blast furnace on site in 1902
and added coke ovens in 1904. The Zenith facilities were acquired by Interlake Iron Corporation
in 1930. Interlake continued to operate the coking ovens, and more ovens were added in 1939.
Interlake operated the blast furnace until 1960 and the coke ovens until 1961. In 1962, the blast
furnace was toppled and the coke ovens were emptied. Between approximately 1904 and 1916,
Duluth Tar and Chemical Company produced tar products from waste tar obtained from
Interlake, as did the Barrett Company from approximately 1916 and 1924. Between 1924 and
1948, Dominion, American Tar and Chemical Company, and American Tar Products, produced
products using tar from Interlake. Most of the buildings from these businesses have been
removed. Presently, Hallett Dock Company, an auto junkyard, and other small businesses
operate on the site. The St. Louis River, which empties into Lake Superior 4 miles downstream
of the site, is located south of the Hallett Dock Company. Approximately 800 people live within
a mile of the site. Contaminated groundwater is not used as a drinking water source. Drinking
water is supplied from an intake several miles from the mouth of Lake Superior.
Site Responsibility:
This site is being addressed through
Federal, State and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
February 1995
-------
Threats and Contaminants
Air at the site may contain contaminated dust and volatile organic compounds (VOCs)
when the surface soil is disturbed. The groundwater at both site areas is contaminated
with PAHs. Sediments and soils at the U.S. Steel area contain PAHs. Sediments and
soils at the Interlake/Duluth Tar Area contain PAHs and tars. The surface water at the
U.S. Steel area is contaminated with PAHs. The tanks and pipes are contaminated
with polychlorinated biphenyls (PCBs). If the contaminated soil, sediments, surface
water and groundwater are accidentally swallowed or touched, health hazards could
ensue. The site also could contaminate the wetlands adjacent to the U.S. Steel site and
the St. Louis River. There is a fish advisory in effect, "No Swimming" signs are
posted, and there are some restrictions on access to the two site areas.
Cleanup Approach
This site is being addressed in four stages: initial actions, and three long-term remedial phases
focusing on cleanup of the tar seeps, the U.S. Steel area, and soils and sediments at the
Interlake/Duluth Tar area.
Response Action Status
Initial Actions: Several initial actions have been completed to remove contaminated
materials at both areas of the site. Most buildings at both areas of the site have been
demolished, and tanks and pipes have been cleaned and dismantled at the U.S. Steel
area.
Tar Seeps at the Interlake/Duluth Area: In 1990, the EPA selected a remedy to
excavate the tar seeps present on the soil surface and to burn the tar as fuel. These
cleanup activities were undertaken by the parties potentially responsible for the
contamination and were completed in 1993.
U.S. Steel Area: The State has selected the following remedy to clean up the U.S.
Steel portion of the site: excavating and removing the tar-contaminated soil and using
it as fuel; discharging the contaminated water to the publicly owned water treatment
facility; incinerating PCB liquids; landfarming of some materials; monitoring surface water and
groundwater; and disposing of wastes in an approved landfill. The potentially responsible parties
have begun site cleanup activities.
Soils and Sediments at the Interlake/Duluth Tar Area: The State has
completed an investigation into the nature and extent of contamination on the
Interlake/Duluth Tar portion of the site. A final study conducted by the potentially
responsible parties focusing on the cleanup alternatives for the soil and groundwater is expected
to be completed in 1995. Studies focusing on the cleanup alternatives for the sediments are also
currently underway.
February 1995 2 ST. LOUIS RIVER SITE
-------
Environmental Progress
The demolition of contaminated buildings, cleanup and dismantling of contaminated tanks and
pipes, and the excavation and removal of the tar seep materials have reduced the potential for
exposure to hazardous materials at the St. Louis River Site while further studies and cleanup
activities are taking place.
Site Repository
Duluth Public Library, 520 West Superior Street, Duluth, MN 55802
ST. LOUIS RIVER SITE
February 1995
-------
ST. REGIS PA
MINNESOTA
EPA ID# MND057597940
Site Description
EPA REGION 5
Cass County
hippewa National Forest
Other Names:
Wheelers Division
The St. Regis Paper Co. site occupies 125 acres in the Chippewa National Forest between Pike
Bay and Cass Lake. Wood treatment activities began at the site in the 1950s while the land was
leased from the Great Northern Railroad. In 1957, pressure treatment of lumber with creosote
was being used in the wood treatment process; wastewater from this process was discharged into
a disposal pond. In 1960, pentachlorophenol (PCP) was being used to pressure-treat wood
products. Wastewater from this process was discharged into three disposal ponds. In mid-1971,
the three ponds were replaced by a new pond. Since mid-1980, the plant's wastewater was
evaporated, and the residue was placed in barrels for transport to a hazardous waste disposal
facility. Prior to this action, sludge reportedly was hauled to the southwestern corner of the
property before it was transported to an off-site disposal facility. Also, the pond was dredged on
one occasion, and the contents were placed around the sides of the pond. Drinking water in the
area comes from private and municipal wells. The Chippewa National Forest, Pike Bay, and Cass
Lake have a potential of being contaminated by the site.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
The groundwater is contaminated with polycyclic aromatic hydrocarbons (PAHs),
phenolic compounds, low levels of metals, and dioxins. The soil is contaminated with
PAHs, PCPs, dioxin, and arsenic, while the surface water is contaminated with PAHs
and phenolic compounds. The contaminated soil and groundwater could have adverse
health effects if accidentally ingested or directly contacted. Seepage from the site
could potentially flow into the nearby wetlands and be harmful to the plant and animal
life.
February 1995
-------
Cleanup Approach
The site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire Site: In 1986, the State decided to excavate the contaminated soil and store it
in an on-site vault. The contaminated soil has been excavated and stored, and the
groundwater is being treated by the carbon adsorption method before being discharged
to the surface water. This treatment system has been operative since 1987 and will continue until
contamination is reduced to safe cleanup levels.
Site Facts: Two Consent Orders signed by the State of Minnesota and Champion International
in 1985 gave Champion International the responsibility to conduct the investigation to determine
the nature and extent of site contamination and to develop a plan for cleanup.
Environmental Progress
The ongoing groundwater treatment program and soil excavation have significantly reduced the
potential for exposure to soil contaminants at the St. Regis Paper Co. site. The groundwater
treatment is expected to continue until cleanup goals are met.
Site Repository
Not established.
February 1995
ST. REGIS PAPER CO.
-------
ST. AUGUST
SANITARY LA
ENGEN DUMP
MINNESOTA
EPA ID# MND981002256
EPA REGION 5
Stearns County
1 mile from St. Augusta
Other Names:
'St. Cloud Dump
Site Description
The 75-acre St. Augusta Sanitary Landfill/Engen Dump site operated as a dump and landfill. The
10-acre Engen Dump portion of the site operated from 1966 to 1971. The 40-acre St. Augusta
Landfill was operated as a sanitary landfill, licensed by the State, from 1971 until 1982. Paint
wastes, solvents, sludges, and ash from hazardous waste incineration were buried at the site.
Records indicate that open burning occurred at the Engen Dump portion of the site. There also
was evidence of illegal dumping of wastes in the early 1980s. Also, erosion has at times exposed
filled waste at the St. Augusta site, and a leachate seep has been noticed on the northern side of
the landfill. In 1983, the landfill and dump ceased operations and were covered with a cap.
Fencing around the site is inadequate, and there is evidence of site use by recreational vehicles
and hunters. St. Augusta has an approximate population of 2,500. The Mississippi River borders
the old Engen Dump area of the site. Johnson Creek runs to the south of the site. One nearby
residence has a private well, which is regularly monitored. Since groundwater flow is toward the
Mississippi River, site contaminants may be reaching the river, which is used as a major drinking
water resource.
Site Responsibility:
This site is being addressed through
Federal, State, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/18/85
Final Date: 07/21/87
Threats and Contaminants
Groundwater is contaminated with heavy metals including arsenic, barium, and lead;
volatile organic compounds (VOCs); atrazine; and phthalates. Health threats include
coming in direct contact with and ingestion of contaminated groundwater.
February 1 995
-------
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: An investigation to determine the nature and extent of contamination
began in 1991 and is scheduled for completion in 1995. To date, a steering
committee representing potentially responsible parties has installed monitoring wells,
taken yearly samples, and conducted a hydrogeological study.
Site Facts: Approximately 40 parties potentially responsible for wastes associated with the site
have formed a steering committee to address contamination at the site.
Environmental Progress
After adding this site to the NPL, the EPA performed preliminary investigations and determined
that no immediate actions were required at the St. Augusta Sanitary Landfill/Engen Dump site
while further investigations continue and cleanup activities are being planned.
Site Repository
Great River Regional Library, 405 St. Germain Street, St. Cloud, MN 56301
February 1995
2 ST. AUGUSTA SANITARY LANDFILL/ ENGEN DUMP
-------
TWIN CITIE
FORCE RES
(SMALL AR
LANDFILL)
MINNESOTA
EPA ID# MN857002427
EPA REGION 5
Hennepin County
Minneapolis-St. Paul
International Airport Complex
Other Names:
US Air Force Minneapolis-St. Paul
International Airport
Small Arms Range Landfill
Site Description
Since 1944, the 280-acre Twin Cities Air Force Reserve Base (Small Arms Range Landfill) was
used for operations that resulted in the storage and disposal of hazardous substances. The Small
Arms Range Landfill was the main base landfill from 1963 to 1972. The site is situated along the
Minnesota River and covers approximately 3 acres. In addition to general base refuse, quantities
of paint sludge, paint filters, and leaded-fuel sludge also were disposed of at the landfill. The site
is located within the 100-year flood plain of the Minnesota River and is periodically flooded,
resulting in the release of chromium, lead, and zinc to the river. Approximately 64,700 people
living in the Minneapolis-St. Paul metropolitan area depend on public and private wells for
drinking water within a 3-mile area of the landfill.
Site Responsibility:
This site is being addressed through
Federal actions.
NPL LISTING HISTORY
Proposed Date: 01/22/87
Final Date: 07/21/87
Threats and Contaminants
Monitoring wells have shown contamination with low levels of mercury, chromium,
lead, and zinc in the ground water. Soil and sludge were contaminated with paint by-
products and petrochemicals. Individuals who accidentally ingested or had direct
contact with contaminated ground water, soil, or sludge may have suffered adverse
health effects; however, the site has been fenced, restricting access to site-related
contaminants. The northern boundary of the Minnesota Valley National Wildlife
Refuge lies 500 feet from the landfill.
February 1995
-------
Cleanup Approach
Response Action Status
Immediate Actions: In the spring of 1987, the EPA secured the site, posted
warning signs, transferred liquids to on-site storage tanks, shipped 69 drums of
organic sludges for incineration, and transported 35 cubic yards of contaminated soil
for off-site disposal.
Entire Site: The Air Force completed an investigation of the site in 1992,
determining the extent of contamination. The selected remedies include allowing
contaminants to dissipate through natural attenuation, monitoring the groundwater,
and imposing deed restrictions to limit site use. In addition, a fence has been constructed to
secure the site. After groundwater monitoring has been completed, the site will be re-evaluated to
ensure that natural attenuation is sufficiently reducing groundwater contamination.
Site Facts: The Twin Cities Air Force Reserve 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 of hazardous contaminants at
military and other DOD facilities.
Environmental Progress
All construction at the site is complete. The immediate actions, including the removal of liquid
and solid wastes and contaminated soil, the construction of a fence, and the imposing of deed
restrictions, have greatly reduced the potential for exposure to hazardous substances at the Twin
Cities Air Force Reserve Base (Small Arms Range Landfill) site while the groundwater recovers
through natural processes.
Site Repository
Southdale Hennepin Area Library, 7001 York Avenue South, Edina, MN 55435n
February 1995 2 TWIN CITIES AIR FORCE RESERVE BASE
(SMALL ARMS RANGE LANDFILL)
-------
UNION SCRA
& METAL COM
MINNESOTA
EPA ID# MND022949192
EPA REGION 5
Hennepin County
North Minneapolis
Site Description
Union Scrap Iron & Metal Company sorted and crushed lead battery fragments on this 1/4-acre
site from 1973 to 1980. Lead was separated and sold for recycling. The remaining plastic and
rubber fragments, which also contained lead, accumulated in piles. Approximately 30,000 tons of
these fragments were on the site. According to the State, airborne lead levels adjacent to the site
were significantly high. There was also a potential for groundwater and surface water
contamination. Approximately 3,700 people live within a 1/2-mile radius of the site and 17,100
live within 1 mile. There are three schools within 1 mile of the site.
Site Responsibility:
This site was addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Deleted Date: 09/10/91
Threats and Contaminants
The air was contaminated with lead. The soil and sludge were contaminated with
heavy metals including lead, arsenic, cadmium, nickel and copper, as well as
polychlorinated biphenyls (PCBs). The site is located in a predominantly commercial
area; the potential for exposure to airborne particulates existed for people traveling
and working near the area prior to the completion of cleanup activities.
February 1995
-------
Cleanup Approach
Response Action Status
Emergency Actions: In 1985, the EPA covered the contaminated piles with
tarpaulins and weighted them with tires to prevent erosion and air pollution. A fence
also was installed. In 1987, the EPA removed the battery debris, casings, and
contaminated soil from the property and refilled the area with clean fill. Contaminated materials
were removed from sewer lines. Existing buildings were decontaminated and demolished. In
1989, a cement pad and the waste beneath it were removed.
Entire Site: The EPA conducted an investigation of the site to determine the nature
and the extent of the contamination. The results of the investigation indicated that no
significant contamination remained on the site after the completion of the emergency
actions. The EPA, therefore, determined in 1990 that no further action would be taken at this
site. The site was deleted from the NPL in 1991.
Environmental Progress
The emergency actions described above have eliminated the potential for exposure to
contaminated materials at the Union Scrap Iron & Metal Company site. Because of these actions,
all cleanup goals for surface contamination have been met, and no significant contamination
remains on the site, making the surroundings safe for nearby residents and the environment. The
site has been designated for unrestricted use, and no further monitoring is necessary. The EPA
deleted the site from the NPL in 1991.
Site Repository
Minneapolis Public Library, 300 Nicollet Mall, Minneapolis, MN 55401
February 1995
UNION SCRAP IRON & METAL COMPANY
-------
UNIVERSITY
MINNESOTA
(ROSEMOUNT
RESEARCH CEN
MINNESOTA
EPA ID# MND980613780
Site Description
EPA REGION 5
Dakota County
Rosemount
Other Names:
Rosemount Research Center
The University of Minnesota formerly operated this 4-acre disposal site, which includes the
following areas: a burn pit, constructed in 1968, which received about 7,000 gallons of waste per
year (a second pit existed in the early 1960s and received about 100 gallons of waste per year); a
used equipment area that may have been used for storing and salvaging of electrical equipment
and lead batteries and for disposal of polychlorinated biphenyl (PCB)-contaminated oil (two
incinerators also were operated in this area and may have been fueled by transformer oil); a
transformer area where a PCB spill occurred in the 1970s; an oxidation pond and a Research
Center Sewer System area that now receive sanitary sewer discharges; a dump area where
construction, demolition, and municipal wastes have been placed; and a former Process Water
Lagoon area, which operated for 4 months in 1945 and received sulfuric acid, nitric acid,
ammonia, and ether. Between 1960 and 1973, the University buried and incinerated gaseous,
liquid, and chemical laboratory wastes on the site. The University detected volatile organic
compounds (VOCs) and heavy metals in monitoring wells and soil on site in 1972. New
monitoring data collected by the State in 1984 indicate that the contamination is spreading.
Approximately 9,600 people use wells within 3 miles of the site as a source of drinking water.
The closest well downslope of the burn pit is 9,500 feet away. Employee and tenant work areas
are within 1,000 feet from the used equipment area.
Site Responsibility:
This site was 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
The groundwater was contaminated with heavy metals including lead, copper, and
zinc; VOCs including chloroform; and nitrates. The soil was contaminated with
VOCs; heavy metals including lead, chromium, copper, and zinc; pesticides including
lindane and chlordane; dioxins; and PCBs. The contaminated soil and groundwater
could have posed health problems to individuals if directly contacted or ingested.
February 1995
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Cleanup Approach
Response Action Status
Groundwater: The University has taken the responsibility for monitoring the
groundwater. Also, the University is supplying bottled water to 28 families in
Rosemount. A groundwater pump-out system has been constructed and is operational.
Construction of a permanent water supply system was completed in late 1991. The wells in the
area no longer exceed the State's Recommended Allowable Limit for chloroform; however, the
University constructed the water supply system on its own accord.
Entire Site: The EPA and the State have completed an investigation into the soil
contamination at the site. In 1990, lead-contaminated soil was removed and disposed
of off site in a federally approved landfill. Soil heavily contaminated with PCBs has
been treated on site using an on-site incineration process. The incineration of contaminated soils
has been completed. A small portion of soils on site with very low levels of contamination was
not incinerated. This area of the site was fenced to restrict access. In the fall of 1994, a
vegetative cover was installed over the areas where soil was removed for incineration.
Site Facts: In 1986, under a State Order, the University of Minnesota conducted an
investigation of the site. The Order also called for the removal of contaminated soil and
monitoring of the contaminated groundwater.
Environmental Progress
Cleanup of the site is complete. The provision of an alternative water supply to affected families;
the removal, disposal, and incineration of contaminated soils; and the fencing and covering of
portions of the site have eliminated the potential for exposure to hazardous substances at the
University of Minnesota (Rosemount Research Center) site.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
February 1995
UNIVERSITY OF MINNESOTA
(ROSEMOUNT RESEARCH CENTER)
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WAITE PARK
MINNESOTA
EPA ID# MND981002249
EPA REGION 5
Stearns County
St. Cloud
Site Description
The Waite Park Wells site contains four municipal water wells. Wells 1 and 3 are located on
Burlington Northern Car Shop property and were found to be contaminated with volatile organic
compounds (VOCs) in 1984. Burlington Northern has constructed and repaired railroad cars on
the site since 1894. The activities generated wastes that included oils and greases, sandblast sand,
calcium hydroxide, solvents, paints, and polychlorinated biphenyls (PCBs). Burlington Northern
ceased operations at this facility around 1980 and has donated much of the land to the City of
Waite Park. The Electric Machinery plant has manufactured electric generators since 1969. The
plant had four major waste streams: waste oils and lubricants, resins from the thermoplastics
operation, coolant from the machine shop, and solvents and paints from a paint booth. There
were several disposal and storage areas on the property. Approximately 4,000 people reside in
Waite Park, and 3,500 people are served by the municipal water system. The adjacent Sauk
River joins the Mississippi River 2 miles from the site. The nearest houses are approximately 50
feet from the site.
Site Responsibility:
This site is being addressed through
Federal, State, and municipal actions.
NPL LISTING HISTORY
Proposed Date: 09/18/85
Final Date: 06/10/86
Threats and Contaminants
The groundwater and soil are contaminated with VOCs. Sandblast sand and soils are
contaminated with heavy metals, VOCs, and PCBs. Individuals may face a health risk
if they ingest contaminated water or directly contact contaminated soil.
February 1995
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Cleanup Approach
This site is being addressed in three stages: initial actions and two long-term remedial phases
focusing on cleanup of the Electric Machinery property and cleanup of the Burlington Northern
property.
Response Action Status
Initial Actions: The contaminated wells were taken out of service immediately, with
an emergency hookup to the St. Cloud water supply established in 1985. Since 1988,
an air stripper has been operated by the municipality to treat the groundwater from
these two municipal wells.
Electric Machinery Property: The remedy selected for cleanup of the Electric
Machinery property includes: installing groundwater extraction wells in the
contaminated plume; pumping and treating contaminated groundwater through an air
stripper and discharging the treated water into the Sauk River; and restricting access to the site
by installing a fence and security system around the site. Pumping and treating of the
groundwater is still underway. All other cleanup activities have been completed.
Burlington Northern Property: In 1994, the State completed additional
investigations to further define the areas of contamination at this site and to determine
if additional cleanup actions were required. A remedy addressing lagoons,
contaminated sandblast sands, and shallow groundwater was selected in the summer of 1994. The
contaminated sandblast sands and soil from the lagoons have been consolidated, and will be
stabilized, solidified and contained on site. The containment facility will have a liner, leachate
and gas collection systems, a cover, and a groundwater monitoring system. Construction is
scheduled for completion in 1997. Currently, the State has determined that no action is required
for the shallow groundwater because the containment of the lagoon soil and sandblast sands will
control the source of contamination. Monitoring will be conducted to ensure that the groundwater
remains at acceptable health-based levels.
Environmental Progress
The emergency hookup to the municipal water system, installation and operation of the air
stripper water treatment system, and securing of the site have reduced the potential for exposure
to contaminated soil and groundwater while further cleanup activities are taking place at the
Waite Park Wells site.
February 1 995 2 WAITE PARK WELLS
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Site Repository
Waite Park Branch Library, 612 North Third Street, Waite Park, MN 56387
WAITE PARK WELLS 3 February 1995
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WASHINGTO
COUNTY LAN
MINNESOTA
EPA ID# MND980704738
EPA REGION 5
Washington County
Lake Elmo
Site Description
From 1969 to 1975, Washington and Ramsey Counties operated a sanitary landfill at the 40-acre
Washington County Landfill site. After operations were discontinued in 1975, a clean soil cap
was placed on the landfill. In 1981, groundwater monitoring indicated the presence of elevated
concentrations of volatile organic compounds (VOCs) and some heavy metals in on-site
monitoring wells and off-site residential wells. In 1983 and 1984, alternate drinking water
supplies were provided to affected residences. In 1983, Ramsey and Washington Counties
installed a pump and treat system to reduce any potential groundwater contamination from the
landfill. The site is near a sparsely populated residential development, with some farmland in the
area.
Site Responsibility:
This site is being addressed through
Federal, State, County, and potentially
responsible parties' actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater is contaminated with VOCs. Individuals may face a health risk from
ingesting or touching contaminated groundwater; however, it is unlikely as all local
residents have been connected to the City of Oakdale public water supply.
February 1995
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Cleanup Approach
Response Action Status
Immediate Action: In 1983 and 1984, alternate drinking water supplies were
provided to affected residences, and Ramsey and Washington Counties installed a
groundwater extraction and treatment system.
Entire Site: Cleanup remedies selected by the EPA include: installing and operating
a groundwater gradient control operation at the site; providing safe drinking water
supplies for affected residences; monitoring the landfill and the effectiveness of the
groundwater gradient control system; instituting appropriate landfill security and safety
procedures; and implementing a closure plan. The groundwater gradient control system is in
operation and monitoring of the groundwater will continue until the long-term effectiveness of the
remedy is confirmed. Landfill closure has been completed.
Drinking Water: In September 1990, a remedy was selected to supply drinking
water to residents of 10 homes in Lake Elmo who had received Minnesota
Department of Health advisories against using their existing well water for drinking or
cooking. The remedy called for these 10 homes to be connected to the City of Oakdale public
water supply system. Construction of the connections was completed in 1992.
Site Facts: In 1984, a Consent Order was signed between the Counties and the MPCA for the
Counties to perform cleanup activities. In early 1992, the EPA issued a Unilateral Administrative
Order to the Counties, requiring them to continue cleanup activities under EPA monitoring.
Environmental Progress
All construction at the site is complete. The immediate and continuing actions to supply an
alternative drinking water supply to affected residences have eliminated the potential for exposure
to hazardous substances in the drinking water at the Washington County Landfill site.
Site Repository
Washington County Library, 2150 Radio Drive, Woodbury, MN 55125
February 1995
WASHINGTON COUNTY LANDFILL
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WASTE DISP
ENGINEERIN
MINNESOTA
EPA ID# MND980609119
PA REGION 5
Anoka County
Andover
Site Description
The 114-acre Waste Disposal Engineering site operated as a dump and landfill for approximately
20 years, closing in early 1983. Hazardous wastes were disposed of throughout the landfill
during site operation. From 1972 until 1974, paint sludges, solvents, oils, caustics, and acids
were disposed of in an asphalt-lined pit on the site. Poor operating practices and spills
contributed to the site contamination. In 1982, lime sludge generated by the Minneapolis
Drinking Water Treatment Plant was deposited at the site. The landfill covers 73 acres of refuse
area and contains approximately 2,500,000 cubic yards of waste. Groundwater directly under the
site is contaminated primarily with volatile organic compounds (VOCs). Area residents rely on
groundwater for their drinking water source. The area surrounding the site is residential,
agricultural, and commercial. The site is bordered by Coon Creek.
Site Responsibility:
The site is being addressed through
Federal and potentially responsible
parties' actions.
NPL LISTING HISTORY
Proposed Date: 07/16/82
Final Date: 09/08/83
Threats and Contaminants
Groundwater, soil gas, and Coon Creek contain VOCs from wastes deposited in the
landfill. Individuals may be exposed to contaminants through accidental ingestion of,
inhalation of, or direct contact with groundwater, soil gas, or surface water.
February 1995
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Cleanup Approach
The site is being addressed in a long-term remedial phase focusing on cleanup of the entire site.
Response Action Status
Entire Site: In 1987, the EPA selected a remedy to clean up the site by pumping
and treating the groundwater using carbon adsorption and discharging the treated
water to Coon Creek; installing a soil cap to completely cover the landfill; installing
a clay groundwater cut-off wall; restricting well use; filling in a wetland and constructing an
alternate wetland to replace the lost habitat; and monitoring the site. Construction of the final site
remedy began in 1992 and will be completed in 1994. Groundwater cleanup will continue as a
long-term phase of the remedy.
Environmental Progress
An initial evaluation by the EPA of the Waste Disposal Engineering site determined that no
immediate actions are necessary to protect the public or the environment from immediate threats
while design activities take place.
Site Repository
Andover City Hall, 1685 Crosstown Boulevard, Andover, MN 55304
February 1 995
WASTE DISPOSAL ENGINEERING
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WHITTAKE
MINNESOTA
EPA ID#
EPA REGION 5
Hennepin County
Minneapolis
Other Names:
Minneapolis Coatings &
Chemical Division
Site Description
The 1-acre Whittaker Corp. site is located within a 10-acre tract of land. During World War II,
Triploil Holding Company operated on the site and repackaged war materials, including
antifreeze and oil, for the military. In the 1950s, Triploil expanded its operations by acquiring
Midwestern Copper Works, which manufactures industrial coatings. Resins and industrial
coatings were produced on the property. Raw materials were stored in underground storage
tanks, in diked aboveground storage tanks, in drums, or inside the plant. Waste products were
used in the manufacturing process, condensed into steam, incinerated on site, or disposed of in a
low, swampy area on the site. Hazardous materials were found during a 1978 excavation for a
parking lot. The site is located within an industrial area of Minneapolis. The Mississippi River is
approximately 1,200 feet to the west of the site. There are four industrial and four residential
wells in the nearby area.
Site Responsibility:
This site is being addressed through
Federal and State actions.
NPL LISTING HISTORY
Proposed Date: 09/08/83
Final Date: 09/21/84
Threats and Contaminants
Groundwater and soil were found to be contaminated with heavy metals including
cadmium and lead, as well as volatile organic compounds (VOCs). Ingestion of or
direct contact with contaminated groundwater or soil could pose a health risk.
February 1995
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Cleanup Approach
Response Action Status
Entire Site: In 1985, the following actions were initiated: excavation of buried
drums; removal of contaminated soils from the disposal area; shipment of all
hazardous wastes to permitted disposal facilities; and pumping and treating of
recovered groundwater. All excavation and removal activities have been completed. The
groundwater is being treated by two air strippers, then discharged to a storm sewer. The State
will continue to operate the groundwater treatment system until established cleanup goals have
been met.
Environmental Progress
The removal and treatment actions described above have reduced the potential for exposure to
contaminated materials at the Whittaker Corp. site while pumping and treating of the groundwater
continues.
Site Repository
Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155
February 1995
WHITTAKER CORPORATION
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WINDOM
MINNESOTA
EPA ID# MND980034516
EPA REGION 5
Cottonwood County
Windom
Site Description
Prior to the 1930s, the 11-acre Windom Dump site was quarried for Sand and gravel, almost to
the level of the water table. The site was used for the burning of municipal and industrial wastes
from the 1930s until 1971. From 1971 to 1974, municipal wastes and some industrial wastes
were placed in a fill area along the pit. However, burning of paint sludges continued during this
time. The site was closed in 1974, although the City of Windom has continued to place
demolition asphalt and concrete over the fill area. The population of Windom is approximately
4,500. Land near the site is comprised of residences and is used for farming and industrial
activities. An elementary school is two blocks to the west 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
Groundwater is contaminated with various volatile organic compounds (VOCs) and
heavy metals including arsenic, cadmium, and chromium. VOCs also were detected in
the soil. The contaminated ground water and soil could have posed a health hazard if
touched or ingested. Possible contamination of private wells and the city drinking
water supply with VOCs was a major concern.
February 1995
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Cleanup Approach
Response Action Status
Entire Site: Under EPA supervision, the potentially responsible parties conducted an
investigation at the site to determine the nature and the extent of the contamination.
As part of the investigation, a fence was constructed around the borders of the site
and six monitoring wells were installed by the City. In 1985, the Minnesota Department of
Health sampled the City's municipal and residential wells. In 1987, an additional 12 monitoring
wells were installed. The parties potentially responsible for site contamination performed the
following activities to clean up the site: graded the site to control erosion; covered the site with
compacted clay and other materials which are impermeable to water; provided a drainage layer;
and installed a cover to prevent water and wind erosion. Intervention limits for the contaminants
of concern also were established. These intervention limits were exceeded in 1989, therefore a
ground water extraction and treatment system was installed. Groundwater extraction and treatment
will continue until cleanup levels are met.
Environmental Progress
The numerous cleanup activities described above have reduced the potential for exposure to
hazardous substances at the Windom Dump site, while ground water pumping and treating
continue to lower contamination levels.
Site Repository
Windom Public Library, 904 4th Avenue, Windom, MN 56101
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February 1995 2
•U.S. GOVERNMENT PRINTING OFFICE: 1995-405-700/22031
WINDOM DUMP
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