Descriptions Of 20 Sites Proposed For The National Priorities List As Of August 1990

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Q, V ^ DESCRIPTIONS OF 20 SITES PROPOSED FOR THE 'P-

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o The responsible party or parties can be forced to clean up
by Federal or State legal action.

o A State or local government can choose to assume the
responsibility to clean up without Federal dollars.

o Superfund can pay for the cleanup, then seek to recover
the costs from the responsible party or parties.

A remedial response financed by Superfund is an orderly process that
generally involves the following steps:

o Take any measures needed to stabilize conditions, which
might involve, for example, fencing the site or removing
above-ground drums or bulk tanks.

o Undertake initial planning activities to scope out a
strategy for collecting information and analyzing
alternative cleanup approaches.

o Conduct a remedial investigation to characterize the type
and extent of contamination at the site and to assess the risks
posed by that contamination.

o Conduct a feasibility study to analyze various cleanup
alternatives. The feasibility study is often conducted
concurrently with the remedial investigation as one project.
Typically, the two together take from 18 to 24
months to complete and cost approximately $1.3 million.

o Select the cleanup alternative, after a period of public comment, that:

— Protects human health and the environment

— Complies with Federal and State requirements that are
applicable or relevant and appropriate

— Is "cost effective" — that is, affords results proportional to
the costs of the remedy.
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— Uses permanent solutions and alternative treatment technologies or
resource recovery technology to the maximum extent practicable.

o Design the remedy. Typically, the design phase takes 6 to 12
months to complete and costs approximately $1.5 million.

o Implement the remedy, which might involve, for example,
constructing facilities to treat ground water or removing
contaminants to a safe disposal area away from the site.
EPA expects the inplementation (remedial action) phase to
average out at about $25 million (plus any costs to operate and
maintain the action) per site and to take 6 to 12 months.

The State government can participate in a. remedial response under
Superfund in one of two ways:

o The State can take the lead role under a cooperative
agreement, which is much like a grant in that Federal
dollars are transferred to the State. The State then
develops a workplan, schedule, and budget, contracts for
any services it needs, and is responsible for making sure
that all the conditions in the cooperative agreement are
met. In contrast to a grant, EPA continues to be
substantially involved and monitors the State's progress
throughout the project.

o EPA can take the lead under a Superfund State Contract,
with the State having an advisory role. EPA, generally
using contractor support, manages work early in the
planning process. In the later design and implementation
phases, contractors do the work under the supervision of the
U.S. Army Corps of Engineers. Under both arrangements, the
State must share in the cost of the implementation phase of
cleanup.
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)("Superfund'
MESA AREA GROUND WATER CONTAMINATION
Mesa, Arizona

Volatile organic solvents contaminate five wells in Mesa, Maricopa
County, Arizona. Trichloroethylene, tetrachloroethylene, 1,1,-dichloro-
ethylene, 1,1,1-trichloroethane, and Freon-113 were detected in tests
conducted by the Arizona Department of Health Services and the City of
Tanpe. Two of the wells are owned by the Cities of Mesa and Tempe.
The other three are owned by the Salt River Project and puntp into the
Tempe Canal, a source of irrigation water for about 20,000 acres and a
source of raw water for the South Tempe Municipal Water Treatment Plant.

The area is highly urbanized, and the Tempe well pumps into a
municipal supply system serving an estimated 126,000 people.

EPA is in the process of identifying potential sources of the contami-
nation.
11 c Cnwirnnnr--«tai Prnt~^ion Anflncv/Remedial ResDonse Proaram
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National Priorities List

Superfund hazardous waste site listed under the
Comprehensive Environmental Response Compensation, and Liability Act ICERCLA) as amended n igse

FAIRCHILD SEMICONDUCTOR CORP. (MOUNTAIN VIEW PLANT)
Mountain View, California

Conditions at Listing (October 1984); Fairchild Semiconductor Corp. manu-
factures semiconductors in Mountain View, Santa Clara County, California. The
facility occupies approximately 56 acres and is surrounded by residential and
industrial areas.

This site was originally proposed under the name "Fairchild Camera &
Instrument Corp. (Mountain View Plant)." The company took the new name in 1986.

Monitoring wells on the site are contaminated with trichloroethylene,
1,1,1-trichloroethane, 1,1- and trans-l,2-dichloroethylene, according to
analyses conducted by a consultant to Fairchild. Contamination is believed
to have resulted from leaking underground tanks. About 270,000 people depend
on wells within 3 miles of the site for drinking water.

Since early 1982, Fairchild has been investigating the site geology and
hydrogeology and attempting to define the lateral and vertical extent of solvents
underlying the site. Fairchild has installed two wells to pump and treat the
contaminated ground water plume. The company is working with the California
Regional Water Quality Control Board to further define the extent of contami-
nation and outline various cleanup strategies.

The plant received Interim Status under Subtitle C of the Resource
Conservation and Recovery Act (RCRA) when the company filed Part A of a
permit application.

This is one of 19 sites in the South Bay Area of San Francisco.
Facilities at these sites have used a variety of toxic chemicals, -primarily
chlorinated organic solvents, which contaminate a common ground water basin.
Although these sites are listed separately, EPA intends to apply an area-
wide approach to the problem as well as take specific action as necessary.

Status (February 1986): Continuing efforts to determine the extent of
ground water contamination, Fairchild has installed more than 100 monitoring
wells. . The two treatment wells are now in operation.

The California Regional Water Quality Control Board has issued Waste
Discharge Requirements to the company. The requirements are the board's
legal mechanism for regulating facilities under its jurisdiction.

On August 15, 1985, EPA issued an Administrative Order on Consent under
CEPCLA Section 106(a) to Fairchild's Mountain View Plant, as well as to Intel
Corp.'s and Raytheon Corp.'s Mountain View Plants. The order calls for the
companies to conduct a joint remedial investigation/feasibility study of the
area to determine the type and extent of contamination and identify alternatives
for remedial action.

Status (June 1988): EPA is proposing to drop Fairchild Semiconductor
Corp.'s Mountain View Plant from the proposed tPL. Because the site is a
treatment and storage facility, it is subject to the corrective action
authorities of Subtitle C RCRA.

EPA has been overseeing the RI/FS required under the August 1985 order.
A preliminary draft FS is scheduled to be available for public review in July
1988.

Fairchild now has 25 wells in operation that pump and treat contaminated
ground wtaer; has installed three underground slurry wails to control migration
of contaminated ground water; and has sealed 4 old agricultural wells.

Superfund hazardous waste site listed under the
Comprehensive Environmental Response. Compensation, and Liability Act (CERCLA) as amended in 1986

SPECTRA-PHYSICS, INC.
Mountain View, California

Spectra-Physics, Inc. (SP) has manufactured electronic equipment and
gas lasers on Terra Bella Boulevard and Middlefield Roads in Mountain View,
Santa Clara County, California, since 1961. The 11.5-acre site consists of
nine buildings in a light industrial complex. SP uses a variety of cleansers,
degreascrs, and lubricants in its manufacturing processes, including isopropyl
alcohol/ acetone, methyl alcohol, trichloroethylene (TCE), Freon, 1/1,1-
trichloroethane (TCA), and Solvasol Solvent 360. In an inspection conducted
in 1981, the California Regional Water Quality Control Board found that areas
where hazardous wastes were stored had no dikes or systems to collect leachate;
rusty barrels were also found on-site.

Ground water investigations began at the SP facility in September 1984
after tests at Teledyne Semiconductor (adjacent and downgradient of SP)
indicated possible upgradient sources of contamination. (The Teledyne site
was placed on the NPL in July 1987.) soil and ground water collected at SP
contained TCE, TCA/ and 1,2-dichloroethylene. SP's plume of contaminated
ground water has merged with Teledyne1s and migrated off-site. More than
200 private drinking water wells had been drilled into the 1-square-mile plume.
Most wells have been closed; 47 were found contaminated above State Action
Levels. The owners now obtain water from municipal water supplies. An
estimated 189,000 people obtain drinking water from public and private
wells within 3 miles of the site.

Teledyne is operating one shallow extraction well on-site. The well
pumps the water to the surface and discharges it to the sanitary sewer;
the ground water is not treated before discharge. SP will evaluate the
effectiveness of this system in preventing its on-site plume from migrating
off-site. Both companies are jointly designing an off-site extraction
system; completion is scheduled for 1988.

San Francisco Bay (2.5. miles downstream of the site) is used for
recreational activities. Permanente Creek is tidally influenced within 1 mile
of the site. Several species of birds designated as endangered species by the
U.S. Fish and Wildlife Service are found within the area of tidal influence.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response. Compensation, and Liability Act of 1980 (CERCLA)C'Superfund"
KUNIA WELLS I
County of Honolulu, Island of Qahu, Hawaii

Conditions at listing (October 1984); The Kunia r/fells I Site consists
of four drinking water wells that are owned and operated by the City and
County of Honolulu. The wells are located on the Schofield Plateau in the
County of Honolulu, Island of Oahu, Hawaii. They are contaminated with
trichloropropane (TCP), according to analyses conducted by the Hawaii
Department of Health and other government agencies. The Kunia Wells I are
part of a distribution system which serves 21,000 people. Water from the
Kunia I Wells is blended with water from another well field.

Status (January 1986); EPA received numerous comments on the six
sites in Hawaii, which were the first sites proposed for the NPL on the
basis of contamination that appears to originate entirely fron the
application of pesticides- registered under~the~Federa±~Insecticider,
Fungicide, and Rodenticide Act (FIFRA). EPA is continuing to evaluate
these sites in the context of an overall policy with respect to sites
at which contamination results from the application of FIFRA-registered
pesticides. Hence, EPA is continuing to propose the sites for the NPL.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)("Superfund"
KUNIA WELLS II
County of Honolulu, Island of Oahu, Hawaii

Conditions at listing (October 1984): The Kunia Wells II Site
consists of two drinking water wells that are owned and operated by the
City and County of Honolulu. The wells are located on the Schofield
Plateau in the County of Honolulu, Island of Oahu, Hawaii. They are
contaminated with dibrcmochloropropane (DBCP) and trichloropropane (TCP),
according to analyses conducted by the Hawaii Department of Health and
other government agencies. They have been closed since July 1983. The
walls are part of the Kunia distribution system that provides drinking
water to about 13,700 people.

There are several well sites with similar contamination problems
located in the Schofield Plateau/Ewa Plain area of Oahu. The City and
County of Honolulu Board of Water Supply has conducted pilot tests on
methods for decontaminating the water in the area and has had success in
removing DBCP and TCP with granulated activated carbon and with aeration
towers.

Status (January 1986); EPA received numerous comments on the six
sites in Hawaii, which were the first sites proposed for the NPL on the
basis of contamination that appears to originate entirely from the
application of pesticides registered under the Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA). EPA is continuing to evaluate
these sites in the context of an overall policy with respect to sites at
which contanination results from the application of FIFRA-registered
pesticides. Hence, EPA is continuing to propose the sites for the NPL.

A contract was awarded by a private developer to build a carbon
treatment plant at Kunia II. Construction is complete, and the plant is
scheduled to be operational in March 1986.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site
Hazardous waste site listed under the
Comprehensive Environmental Response. Compensation, and Liability Act of 1980 (CERCLA)C'Superfund'
MILILANT WELLS
County of Honolulu, Island of Oahu, Hawaii

Conditions at listing (October 1984): The Mililani Walls Site
consists of six drinking water wells that are owned and operated by the
City and County of Honolulu. The wells are located on the lower Schofield
Plateau in the County of Honolulu, Island of Oahu, Hawaii. They are
contaninated with dibronochloropropane (DBCP) and trichloropropane (TCP),
according to tests conducted by the Hawaii Department of Health and other
goverrment agencies. Three of the wells are presently not being used.
The Mililani wells normally supply water to 19,500 people through a
closed distribution system.

Status (January 1986); EPA received numerous comments on the six
sites in Hawaii, which were the first sites proposed for the NPL on the
basis of contamination that appears to originate entirely from the
application of pesticides registered under the Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA). EPA is continuing to evaluate
these sites in the context of an overall policy with respect to sites
at which contamination results from the application of FIFRA-registered
pesticides. Hence, EPA is continuing to propose the sites for the NPL.

The developer of Mililani Town has awarded a contract to build a carbon
treatment plant at the wells. The plant will be designed to remove the
pesticides from the water prior to distribution. The plant is complete
and is scheduled to be operational in March 1986.
U.S. Environmental. Protection Agency/Remedial Response Program
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)("Superfund'
WAIAWA SHAFT
County of Honolulu, Island of Oahu, Hawaii

Conditions at listing (October 1984): The Waiawa Shaft is located
on the Ewa Plain in the County of Honolulu, Island of Oahu, Hawaii, and
is owned and operated by the U.S. Navy. The well is part of a closed
distribution system which provides drinking water to 64,000 people in the
area of McGrew Point, Pearl Harbor, and part of Hickam Air Force Base.
The well is contaminated with dibromochloropropane (DBCP) and trichloro-
propane (TCP), according to analyses conducted by the U.S. Navy and other
government agencies.

Status (January 1986); EPA received numerous comments on the six
sites in Hawaii, which were the first sites proposed for the NPL on the
basis of contamination that appears to originate entirely from the
application of pesticides registered under the Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA). EPA is continuing to evaluate
these sites in the context of an overall policy with respect to sites
at which contamination results frcm the application of FIFRA-registered
pesticides. Hence, EPA is continuing to propose the sites for the NPL.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response. Compensation, and Liability Act of 1980 (CERCLA)C'Superfund'
WAIPAHU WELLS
County of Honolulu, Island of Qahu, Hawaii

Conditions at listing (October 1984); The Waipahu Walls Site
consists of four drinking water wells that are owned and operated by the
City and County of Honolulu. The wells are located on the Ewa Plain in
the County of Honolulu, Island of Oahu, Hawaii. They are contaminated
with ethylene dibromide (EDB) and trichloropropane (TCP), according to
analyses conducted by the Hawaii Department of Health and other government
agencies. The Waipahu Wells are part of a distribution system which
serves 13,700 people in Waipahu, Ewa, and Waianae. All the wells have
been closed down.

There are several well sites with similar contamination problems
located in the Schofield Plateau/Ewa Plain area of Oahu. The City and
County of Honolulu Board of Water Supply has conducted pilot tests on
methods for decontaminating the water in the area and has had success in
removing TCP with granulated activated carbon and with aeration towers.
However, because of continuing contamination, the people served by the
Waipahu Wells are being provided with an alternative supply of drinking
water.

Status (January 1986); EPA received numerous comments on the six
sites in Hawaii, which were the first sites proposed for the NPL on the
basis of contamination that appears to originate entirely from the
application of pesticides registered under the Federal Insecticide,
Fungicide, and Rodenticide Act (FIFPA). EPA is continuing to evaluate
these sites in the context of an overall policy with respect to sites
at which contamination results from the application of FIFPA-registered
pesticides. Hence, EPA is continuing to propose the sites for the NPL.

The Board of Water Supply is building a carbon treatment plant at
the Waipahu well field. The treatment plant will be designed to remove
the pesticides from the water prior to distribution. The plant is
scheduled to be operational in the summer of 1986.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site
Hazardous waste site listed under the
Comprehensive Environmental Response. Compensation, and Liability Act of 1980 (CERCLA)C'Superfund'
WAIPIO HEIGHTS WELLS II
County of Honolulu, Island of Oahu, Hawaii

Conditions at listing (October 1984): The Waipio Heights Wells II
Site consists of two drinking water '/veils that are owned and operated by
the City and County of Honolulu. The wells are located in Waipio on the
lower Schofield Plateau in the County of Honolulu, Island of Oahu, Hawaii.
One well is contaminated with trichloropropane (TCP), according to analyses
conducted by the Hawaii Department of Health and other government agencies.
The other well has been shut down for repairs and has not been tested for
contamination. The wells are part of a distribution system which serves
3,400 people in the Waipio Heights area.

Status (January 1986): EPA received numerous comments on the six
.sites in Hawaii, which were the first sites proposed for the NPL on the
basis of contamination that appears to originate entirely from the
application of pesticides registered under the Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA). EPA is continuing to evaluate
these sites in the context of an overall policy with respect to sites
at which contamination results from the application of FIFRA-registered
pesticides. Hence, EPA is continuing to propose the sites for the NPL.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List

Superfund hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended in 1986

CHEMPLEX CO.
Clinton/Camanche, Iowa

Conditions at listing (October 1984): The Chemplex Co. facility is on the
western edge of Clinton and Camanche, Clinton county, Iowa. The facility has
manufactured high- and low-density polyethylene since 1968. Wastes generated
by this facility include peroxides, mineral spirits, vinyl acetate, and various
organic hazardous substances such as styrene, benzene, toluene, and polyaromatic
hydrocarbons. Unknown quantities of these wastes were disposed of in an unlined
landfill on the site, which has been covered and is no longer used. Waste
water containing some of these constituents was also stored in a 2-acre lined
impoundment on the site. During dredging of the sediments from the bottom of
the impoundment, the liner was ruptured, releasing hazardous substances.

The facility received Interim Status under Subtitle C of the Resource
Conservation and Recovery Act (RCRA) when the company filed Part A of a permit
application.

Ground water downgradient of the landfill and the impoundment is contam-
inated with polyaromatic hydrocarbons and the other organic chemicals identified
above, according to tests conducted by the company and its consultants. The
company has recovered previously released hazardous substances and taken measures
to prevent the release of additional hazardous substances. The company is
conducting additional investigations to completely characterize releases from
the landfill.

About 5,000 people depend on wells within 3 miles of the site as a source
of drinking water.

Status (January 1986); Effective December 31, 1984, Northern Petro-
chemical Co., now USI Co., purchased substantially all assets of the company.

The facility has installed a system for recovering contaminated ground
water and treating it prior to disposal.

In February 1985, the facility submitted Part B of its RCRA permit
application. EPA is reviewing the application.

Status (June 1988): EPA is proposing to drop Chemplex Co. from the proposed
NPL. Because the site is a treatment, storage, and disposal facility, it is
subject to the corrective action authorities of Subtitle C of RCRA.

On September 19, 1987, EPA and the past and present owners/operators
of the Chemplex plant signed an Administrative Order on Consent under CERCLA
Section 106. The order calls for Chemplex to characterize an on-site landfill,
sample Rock Creek, which is downgradient, and improve the ground water recovery
system.

EPA may also pursue cleanup under RCRA authorities and will ensure
that the cleanup protects public health and the environment. EPA can later
repropose the site for the NPL if it determines that the owner or operator is
unable or unwilling to clean up the site effectively.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site
Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)("Superfund")
KERR-McGEE (KRESS CREEK/WEST BRANCH OF DUPAGE RIVER)
DuPage County, Illinois

Conditions at listing (October 1984); The Kerr-McGee (Kress Creek/
West Branch-of DuPage River) Site includes about 1.5 miles of Kress Creek
and 0.5 miles of the West Branch of the DuPaqe River in DuPage County,
Illinois. About 20,000 people live within 3 miles of the site.

In 1931, Lindsay Light & Chemical Co. established a mill in West
Chicago for the extraction of thorium and nonradioactive elements from
monazite and other ores. Later, the site was used for the manufacture of
gaslight mantles (which contain thorium), mesothorium, and, during World
War II, hydrofluoric acid. Cvmership of the facility changed from Lindsay
to American Potash & Chemical in 1958 and to Kerr-McGee Chemical Corp. in
1967. (Derations at the site continued until 1973, when Kerr-McGee, the
current owner, closed the plant.

Over the years, a portion of the wastes from the plant was discharged
into Kress Creek, a tributary of the DuPage River, either via a storm sewer
or drainage ditch. Radiation contamination, which is found to a depth of
several feet along the stream, decreases with distance from the creek.
Many of the highest levels are found near the storm sewer outfall. Water
in the area is obtained from municipal or private wells.

The U.S. Nuclear Regulatory Commission issued an Order to Show Cause,
dated March 21, 1984, requiring Kerr-McGee Chemical Corp. to either
prepare and implement a cleanup plan, or show it should not be required
to do so.

Status (January 1986): Because of an administrative error during the
public comment period/ EPA is extending the comment period on this site
for an additional 60 days.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List
Super-fund hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended in 1986

ANNE ARUNDEL COUNTY LANDFILL
Glen Burnie, Maryland

The Anne Arundel County Landfill covers 130 acres on East End Dover
Street at Route 10 in Glen Burnie, Anne Arundel County, Maryland. An
industrial park, homes, and a commercial area are nearby. From the late
1950s until 1970, 30 acres that were once a gravel pit served as a privately
owned open dump. When the county took over daily operations in 1970, it
capped the old dump with 1-2 feet of clay, planted vegetation, and installed
50 vents to release methane gas. Operations stopped in 1982.

According to a 1978 survey of waste disposal sites by the U.S. Congress
(the "Ekhardt Report"), approximately 100 tons of inorganic salts and solids
from Diamond Shamrock Corp.'s plant in Baltimore were deposited at the
landfill during 1977-79.

In August 1983, EPA detected trichloroethylene, dichloroethylene,
and chromium in monitoring Dwells at the site. The landfill overlies a
recharge area of the Patapsco Formation, which supplies drinking water to
municipal and private wells within 3 miles of the site. The wells serve
an estimated 93,000 people.

The EPA tests also detected cadmium in Furnace Creek downstream
of the site. The creek is tidally influenced as far as 1.5 miles upstream
of the site.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List
Superfund hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended in 1986

FINDETT CORP.
St. Charles, Missouri

Conditions at listing (October 1984): Findett Corp. operates on a site
near the St. Louis suburb of St. Charles, St. Charles County, Missouri, in the
floodplain of the Mississippi River. The Findett facility covers about 3 acres;
however, contamination originating at the facility may cover a much greater
area. A municipal well field is within 1 mile of the site.

Among its activities, Findett reprocessed fluids containing PCBs during
1963-74. Some wastes from the reprocessing were disposed of in a small pond
on the Findett property. In 1977, after significant levels of PCBs were
detected in the pond, Findett excavated and backfilled a portion of the pond.

In further investigations in 1979, EPA found that the pond area was still
contaminated with PCBs. As a result, EPA issued an Administrative Order under
the Clean Water Act in 1980 requiring further excavation of the pond area.
Additional sampling after the excavation indicated PCBs had migrated beyond the
immediate pond area and into subsurface areas.

The facility received Interim Status under Subtitle C of the Resource
Conservation and Recovery Act (RCRA) when the company filed Part A of a
permit application for treating and storing hazardous waste.

EPA issued an Administrative Order on Consent under Section 3013 of
RCRA in September 1982. The order required Findett to design and implement
a monitoring, sampling, and analysis plan to characterize the nature and
extent of PCB soil contamination, as well as the potential for ground water
contamination in the immediate vicinity of the Findett facility. Findett
installed monitoring wells and analyzed ground water for PCBs.

Status (January 1986): EPA sampled wells in June 1985, identified other
contamination in ground water beneath the site, and developed a workplan for a
remedial investigation/feasibility study (RI/FS) to determine the type and
extent of contamination at the site and identify alternatives for remedial
action. EPA is negotiating with Findett to conduct the RI under a CERCLA
Section 106 Consent Order.

Status (April 1988); EPA is proposing to drop Findett Corp. from the
proposed NPL. Because the site is a treatment, storage, and disposal facility,
it is subject to the corrective action authorities of Subtitle C of RCRA.

A Superfund-financed RI to determine the extent and possible source of
ground water contamination began in August 1987 after Findett declined to do
the work. Field work has been completed. Analytical data are being evaluated,
and a draft RI report should be available shortly.

Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)C'Superfund'
QUAIL RUN MOBILE MANOR »
Gray Sumnit, Missouri

Conditions at listing (September 1983); Quail Run Mobile Manor is a
trailer park located 2 miles east of Gray Summit, Franklin County,
Missouri. In the early 1970s, the road through the park was sprayed with
an unknown quantity of dioxin-contaminated waste oil. In 1974, sane of
the soil was excavated from the road and deposited in the area between
the road and a lagoon and also on two nearby properties which are also part
of the site.

Early in 1983, EPA identified dioxin in soil sanples from numerous
locations on the site, one as high as 1,100 parts per billion. As a
result, the U.S. Centers for Disease Control (CDC) issued a health advisory
warning that the more than 100 residents were at risk of developing adverse
health effects from dioxin if they remained in their hones. Some of the
residents had come to the trailer park from Times Beach, Missouri, which
also has a dioxin problem.

In May 1983, EPA, the Federal Emergency Management Agency (FEMA),
and the State briefed the residents on the findings and explained FEMA's
offer of temporary relocation. Of 33 families, 29 applied for relocation.
Status (July 1984); A few families are still residing at Quail Run.
The site is scheduled to be cleaned up as part of a planned removal using
CERCLA emergency funds. The project involves excavating and restoring
several on-site areas contaminated with dioxin. The contaminated soil
will be stored temporarily on the site.

EPA is deferring final rulemaking on this site because it does not
meet the criteria currently specified to place a site on the NPL. EPA
is considering revising the National Contingency Plan (NCP), the Federal
regulation by which CERCLA is implemented, in such a way that Quail Run
and similar sites where CDC has issued a health advisory will qualify
for the NPL.

Status (January 1986); Removal actions are currently underway. All
families have been temporarily relocated, and all of the mobile homes
have been decontaminated and sent off-site for rehabilitation. The tasks
remaining under the removal action include construction of one remaining
steel structure of a total of 11 for temporary storage of contaminated
soil; excavation and storage of remaining contaminated soil; and site
restoration.

On Sept* 16, 1985, EPA revised the NCP to allow placing Quail Run
and similar sites on the NPL. EPA is continuing to evaluate this site
and so is again deferring final rulemaking.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List
Superfund hazardous waste site listed under the
Comprehensive environmental Response Compensation and Liability Act (CERCLAI as amended n 1986

BURLINGTON NORTHERN RAILROAD (SOMERS TIE-TREATI5JG PLANT)
Somers, ttontana

Conditions at listing (October 1984): Burlington Northern Railroad has
treated ties on a 4.5-acre site in Somers, Flathead County, Montana, since
around 1900. The plant's current operations are regulated under Subtitle C
of the Resource Conservation and Recovery Act (RCRA). An old waste disposal
lagoon downgradient of the RCRA-regulated facility has not been used since 1974.

The old lagoon was used to dispose of creosote wastes from the wood-
treatment process. The wastes were discharged from the pond via a ditch to a
marshy area on the shore of Flathead Lake, the largest fresh water lake west of
the Mississippi River. The lake is extensively used for camping and fishing,
and towns along the lake such as Somers use it for drinking water.

On February 28, 1984, the State dug several shallow holes along the lake
shore and took samples of creosote-saturated sand below the ditch outfall.
Sludge/sediment samples were collected from the bottom of a 0.5-acre swamp
pond located along the shore adjacent to the waste ditch. The material was
silty-sand and stained with oil.

Early in March 1984, consultants to Burlington Northern drilled approxi-
mately 60 test borings in the vicinity of the swamp pond, in the waste ditch,
and below the seasonal high water beach of Flathead Lake. About 46 percent of
the test holes showed visual evidence of creosote contamination. The holes
encompassed an area of approximately 3.5 acres, including the pond. Soil
samples were collected from the test borings. Monitoring wells were installed
at 10 sites around the pond.

Status (January 1986): In May and June 1985, Burlington Northern removed
contaminated sludge, soil, and water from the swamp pond under a CERCLA Section
106 Consent Order for an immediate removal. The materials were placed in two
existing RCRA lagoons on the plant site Which were reconstructed to meet RCRA
standards. The company is moving the sludges and soils to another of its
facilities at Paradise, Montana, where they are being placed in a waste pile
that meets RCRA standards. Swamp pond water was processed through the plant's
waste water recycling system.

In December 1984, Burlington Northern voluntarily submitted to EPA a study
to determine the type and extent of contamination at the site and identify
alternatives for remedial action. On October 9, 1985, EPA and Burlington
Northern signed a Consent Order under CERCLA Section 106 for a remedial investi-
gation/feasibility study (RI/FS) covering the old lagoon. The RI/FS activities
are scheduled to be completed in approximately January 1987.

Status (June 1988): EPA is proposing to drop Burlington Northern
Railroad's Somers Tie-Treating Plant from the proposed N?L. Because the
site is a storage and disposal facility, it is subject to the corrective action
authorities of Subtitle C of RCRA.

Burlington Northern is closing the two existing RCRA lagoons according to
a RCRA closure plan approved by the State. The company has submitted a draft
RI/FS and Bndangerment Assessment report to EPA for the old lagoon. Late in
1988, the public will have an opportunity to conment on the cleanup alternative
recommended in the draft RI/FS report.

Superfund hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended in 1986

COMET OIL CO.
Billings, Montana

The Comet Oil Co. Site covers approximately 10 acres on Frontaqe Road in a
residential/industrial part of Billings, Yellowstone County, Montana. The
facility opened approximately 25 years ago and functioned as a one-person waste
oil re-refinery operation until Hair's, inc. (also known as Mountain States
Petroleum Corp.) purchased it in 1974. In 1979, Bair's ceased operation for
economic reasons.

A large number of storage tanks and empty 55-gallon drums are on-site, as
well as several waste oil lagoons and a large sludge pile. In 1985, 100,000
gallons of contaminated waste oil spilled when vandals opened valves on one
tank. Under the supervision of the Montana Department of Health and Environ-
mental Sciences, Comet collected 75,000 gallons of waste oil from the site and
a neighboring property; the other 25,000 gallons were lost to the environment.
Comet also covered parts of the site with 3-5 feet of soil.

Organic compounds, including benzene, phenol, 2,4-dimethylohenol, naphtha-
lene, and trans-l,2-dichloroethylene, are present in an off-site downaradient
monitoring well, according to EPA tests conducted in 1985. Petroleum products
and solvents are in soils throuahout the site, to a depth of 34 feet in some
parts, according to EPA. Within 3 miles of the site are four municipal wells
and one private well that supply drinking water to at least 5,^00 people.

Contaminants at the site threaten the Yellowstone River, which is
used for recreational activities. The river is 0.6 mile downstream from
the site.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List

Superfund hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended in 1986

KERR-MCGEE CORP. (GUSHING PLANT)
Gushing, Oklahoma

Kerr-McGee Corp.'s Gushing Plant covers 116 acres in Gushing, in a rural
area of Payne County, Oklahoma. Since 1915, numerous oil and pipeline
companies have occupied various portions of the site. In 1956, Kerr-McGee
acquired a refinery on the site and operated it until 1972. During 1963-65,
Kerr-McGee conducted various uranium processing operations in a plant on the
site for the Atomic Energy Commission (AEG). From early 1965 until February
1966, Kerr-McGee produced thorium metal from thorium nitrate provided by AEG.
After operations ceased in 1966, the plant was demolished. In 1972, soil and
wash water containing thorium were placed in an on-site surface impoundment
known as Pit 4. A number of other impoundments (Pits 1, 2, 3, and 5) contain
acid sludges and oily wastes from the oil operations; the pits were filled in
prior to 1956.

In 1986, EPA detected uranium, radium, chromium, nickel, zinc, and
arsenic in on-site monitoring wells. An estimated 7,800 people obtain
drinking water from public and private wells within 3 miles of the site. A
private well is 1,000 feet from the site.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)("Superfund'
MIDVALE SLAG
Midvale, Utah

The Midvale Slag Site covers 300 acres in Midvale, Salt Lake
County, Utah. Midvale (population 10,000) is part of the Salt Lake
City Metropolitan area (population 936,000). Between 1902 and 1971,
United States Smelting, Refining and Mining Co. smelted ores on the
site to produce copper, gold, lead, and silver. The site consists of
piles of slag estimated at 2 million tons that remain from the smelting
operations. The smelter no longer exists. In 1971, Valley Materials,
Inc., acquired the site and processes the slag into materials for
railroad beds and asphalt highways.

Testing by the Utah Department of Health indicated that the slag
contains high concentrations of arsenic and heavy metals. The slag is
found on the surface and down to a depth of 20 feet. Hence there is a
potential for ground water contamination. Several municipal wells serving
an estimated 38,000 people are within 3 miles of the site.

The Jordan River, which forms the western boundary of the site, is
not contaminated to date, according to tests conducted by EPA in May
1985. However, slag piles are as close as 50 feet to the river, causing
concern that the river can become contaminated.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List
Superfund hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act (CEflCLA) as amended in 1986

RICHARDSON FLAT TAILINGS
Summit County, Utah

The Richardson Flat Tailings cover approximately 160 acres in a valley
1.5 miles from most recent development in the town of Park City, Summit County,
Utah. At least 2 million tons of tailings are on-site.

The mill tailings came from the Keetley Ontario Mine and other metal
mining- operations- currently owned by united Park- -Ctty Mines -(OPCM). The most
recent use of the area for tailings disposal was during 1975-81, when UPCM
leased its mining properties to either Park City Ventures or NOranda Minina,
Inc. The two companies constructed and operated millina facilities on UPCM
properties.

Both the Utah Department of Environmental Health and FPA have investiaated
the site in the past 3 years. The results show that the heavy metals and
arsenic present in the tailings have migrated into the soil below the tailinas,
ground water, surface water, and air. Continued migration is likely because
the piles are unlined and uncovered. Elevated concentrations of arsenic, copper,
and lead were detected in Silver Creek downgradient of the tailinas. water
diverted from Silver Creek is used to irrigate oastureland..and hay fields within
3 stream .miles..o£ the. site. . . . ..

' .High-volume air sampling .at. Richardson Flat Tailinas documented that
arsenic, cadmium, lead, and zinc were released to the air. An estimated 4,^nn
people live year-round within 4 miles of the-;tailinas.

Motorcyclists commonly ride on the site. In addition, airborne tailinas
material blows across Highway 40 on a daily basis durina the summer months.

This mining site is potentially eligible for cleanuo funds from the State
of Utah's approved proaram under the Surface Mining Control and Reclamation Act
of 1979 (SMCPA). EPA is developing a policy for listing such sites. This site
is being proposed for the NPL at this time to avoid delay in startino CHFCLA
activities.
U.S. Environmental Protection Agency/Remedial Response Program
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National Priorities List Site

Hazardous waste site listed under the
Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA)C'Superfund")

WASATCH CHEMICAL CO. (LOT 6)
Salt Lake City, Utah

The Wasatch Chemical Co. (Lot 6) Site covers 6 acres in Sail: Lake City,
Salt Lake County, Utah. Wasatch beqan formulatinq various organic chemical
products, including pesticides, on 15 acres in the early 1960s. Subsequently,
the site was subdivided into parcels of 6 and 9 acres, which are now owned
by two separate entities. Lot 6 has not been used since before 1980.

The Utah Department of Health estimates that approximately 2,300 cubic
yards of wastes have been disposed in a concrete pond and in drums on Lot
6. EXirinq an inspection in June 1985, the State found 48 drums holding
ignitable and reactive liquids and 13 pressurized qas cylinders in poor
condition; several of the drums were leaking. Residential and cormercial
industrial areas are within a few hundred yards of the drum storage area.
Approximately 85,000 people live within 3 miles of the site.

Additional wastes from the operation were discharged into the 700
West Stream, a ditch that drains into the Jordan River.

Tests conducted by the State in June 1985 detected several chemicals,
including pesticides ami methyl isobutyl ketone, in ground water. 700
West Stream also has elevated levels of some of these compounds.

About 60,000 people obtain drinking water from private wells within
3 miles of the site. The nearest well is within 2,000 feet. No alternative
source of water is available in the area. The Jordan River/Surplus Canal
is used primarily for industrial, irriqation (3 square miles), and
recreational purposes.

In January 1986, the State requested the owner of Lot 6 and a number
of other parties potentially responsible for wastes associated with the
site to remove drums and other materials from Lot 6. When they refused,
the State filed an action in Federal Court seeking the potentially responsible
parties (PRPs) to remove the drums and compensate the State for its costs.
In February 1986, the State and EPA negotiated a Consent Order under CERCLA
section 106 for the drums.

In April 1986, during a CERCLA emergency removal action, EPA detected
dioxin in drums, standing water, and soil on the site. In the removal
action, EPA (1) excavated contaminated soil, (2) transported non-dioxin
drums and soil and the cylinders to a hazardous waste landfill permitted
under the Resource Conservation and Recovery Act, and (3) placed dioxin-
contaminated materials in a temporary storage unit adjacent to Lot 6. EPA
has reached a partial agreement with several PRPs to pay for a portion of
the emergency action. The PRPs have also agreed to provide and maintain a
storage facility for the dioxin materials pending final disposal.
U.S. Environmental Protection Agency/Remedial Response Program
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United States
Environmental Protection
Agency

For further mformat'on. call the
Superfund Hotline, toll-free at
1-800-424-9346 or 382-3000
in Washington, DC, metropolitan
area, or the U S EPA
Superfund Offices listed below

For publications, contact
Public Information Center,
PM-211B
401 M Street SW
Washington DC 20460
CML (202) 382-2080
FTS 382-2080
Office of Emergency and Remedial
Response, OS-230
401 M Street, SW
Washington, DC 20460
CML: (202) 475-8103
FTS: 475-8103
Region 1
Superfund Branch, HSL-CAN 2
John F Kennedy Building
Boston, MA 02203
CML: (617) 573-9610
FTS: 833-1610
Region 2
Emergency & Remedial Response
Division
26 Federal Plaza
New York, NY 10278
CML. (212) 264-8672
FTS- 264-8672

Region 3
Site Assessment Section, 3HW13
841 Chestnut Building
Philadelphia, PA 19107
CML- (215) 597-3437
FTS: 597-3437
Region 4
Waste Management Division
345 Courtland Street, NE
Atlanta, GA 30365
CML: (404) 347-3454
FTS: 257-3454

Region 5
Remedial Response Branch, 5HS-11
230 South Dearborn Street,
12th Floor
Chicago, IL 60604
CML: (312) 886-5877
FTS: 886-5877

Region 6
Superfund Management Branch, 6H-M
1445 Ross Avenue
Dallas. TX 75202-2733
CML: (214) 655-6740
FTS: 255-6740
Region 7
Superfund Branch
726 Minnesota Avenue
Kansas City. KS 66101
CML: (913) 551-7052
FTS: 276-7052
Region 8
Superfund Remedial Branch, 8HWM-S3
999 18th Street, Suite 500
Denver, CO 80202-2405
CML (303) 294-7630
FTS: 330-7630
Region 9
Waste Management Division, H-1
1235 Mission Street
San Francisco, CA 94103
CML- (415) 744-1730
FTS. 484-1730

Region 10
Superfund Branch, HW-113
1200 6th Avenue
Seattle. WA98101
CML: (206)442-1987
FTS: 399-1987
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