SEPA
                                                          v      UIJ^Q 07
                        £ ivironmentai Protection        o.—... a—-_        "" o » f. i
Agency                   «»»nington. DC 20460    February 1991
                          DESCRIPTIONB OF 6 SITES PLACED CM THE
                     FINAL NATIONAL PRIORITIES LIST IN FEBRUARY 1991

           This document  consists of descriptions  of the  6 sites  placed on  the
     National Priorities List (NPL)  in February 1991.   Also included as an addendum
     are descriptions of 14 sites being  dropped  from the proposed NPL at this time.

           The size of the site is generally indicated,  based on information available
     at the time the site was scored using the Hazard Ranking System.   The size may
     change as additional  information  is  gathered on the sources  and extent  of
     contamination.

           Sites are arranged alphabetically by  State  (two-letter abbreviations) and
     by site name.

                            Remedial Actions Under Superfund

           The Superfund  program is managed  by the U.S.  Environmental Protection
     Agency (EPA).   It is authorized by the  Comprehensive Environmental Response,
     Compensation, and Liability Act  (CERCLA), enacted on December 11, 1980, and the
     Superfund Amendments and Reauthorization Act (SARA), enacted on October 17, 1986.
     Under SARA,  the "Hazardous Substances Superfund"  pays the costs not assumed by
     responsible parties for cleaning up hazardous waste  sites  or emergencies that
     threaten public health, welfare, or the environment.  In October 1990, SARA was
     extended to September 30,  1994.

           Two types of responses may be taken when a hazardous substance is released
     (or threatens to be released) into  the environment:

           o  Removal actions, emergency-type responses to  imminent  threats.   SARA
              limits these actions to 1 year and/or $2 million,  with a waiver possible
              if the actions are consistent with remedial actions.  Removal actions
              can be undertaken by the private parties responsible for the releases
              or by the Federal Government using the Superfund.

           o  Remedial responses, actions intended to provide permanent  solutions at
              uncontrolled hazardous waste sites.  Remedial responses are generally
              longer-term and more expensive  than removals.  A Superfund remedial
              response can be taken only if a site is on the NPL.  After publishing
              two preliminary lists and proposing a formal list,  EPA published the
              first NPL in September  1983.    The list  must be  updated  at least
              annually.

           The money  for  conducting  a  remedial  response or removal  action  at a
     hazardous waste site can come from  several  sources:

           o  The individuals or companies responsible for the problems  can clean up
              voluntarily with EPA or State supervision.

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

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      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

         —   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
         conplete 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
                  area away from the site.
      EPA expects  the iitplementation (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:

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The State cam 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.

EPA can take the lead under a Super-fund 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

 Superfund hazardous watte sits listed under trie
 Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended in 1 986
              EMROOLD SaCODNDUCICR CORP.  (M3UNEADJ VIEW PLANT)
                           Mountain View, California
       Conditions at J^ff^j" (October 19841;   Fairchild Semiconductor Corp.
manufactures 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) . "  Tne company took the new name in
1986.

       Monitoring walls on the site are contaminated with trichloroethylene,
1,1,1-trlchloroethane, 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 punp  and
treat the contaminated ground water plume.  Tne company is working with the
California Regional Water Quality Control Board (CRWQCB)  to further define the
extent of contamination and outline various cleanup strategies.

       Tne 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 coiuun ground  water basin.
Although these sites are listed separately,  EPA intends to apply an araawide
approach to the problem as well as take specific action as necessary.
              fFebr"?ry 1,??^) ;   Continuing to determine the extent of ground
water contamination, Fairchild has installed more than 100 monitoring wells.

      On August 15, 1985, EPA issued an Administrative Order on Consent under
CERCLA 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 NFL.  Because the site is a
treatment  and storage facility, it is subject to the corrective action
authorities of RCRA Subtitle C.

      Fairchild now has 25 wells in operation that pump and treat contaminated
ground water and has installed three underground slurry walls to control
migration  of contaminated ground water.  EPA has sealed two abandoned
agricultural wells that were carrying contamination to the deeper aquifers.

      EPA  may also pursue cleanup under RCRA authorities and will ensure that
the cleanup protects public health and the environment.  EPA can later
i ••TIL i JHJUII  the site for the NPL if it determines that the owner or operator is
unable or  unwilling to clean up the site effectively.
      Status (^Vyrjffiry 1991 ) ;   EPA is adding this site to the NPL because,
although it  is subject to RCRA Subtitle C, the transfer of primary
responsibility from CERCLA to RORA would delay the overall cleanup of the
site.
 United State* Environmental Protection Agency / RwwdW fteponM 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

                             SPECTRA-PHYSICS, INC.
                           Mountain View, California

     Conditions at listing  (June 1988) ;  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, degreasers, 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 (CRWQCB) 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 Teledyne 's  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  two extraction wells on-site — one in the shallow
zone and one in the intermediate zone.   The wells pump  the water to the
surface and discharge 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.

     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.

                       1991) :  In February 1990, SP installed a vapor
extraction system to reduce concentrations of contaminants in soil.

      Under an order issued by CRWQCB, SP conducted a remedial investigation/
feasibility study (RI/FS) to determine the type and extent of contamination at
the site and identify alternatives  for remedial action.   The RI/FS was
completed in December 1990.  In February 1991,  CPWQCB will adopt a final
cleanup and abatement order requiring SP to  implement the best remedial
alternative evaluated in the RI/FS.   This alternative will include expanding
the existing soil vapor extraction  system and the ground water extraction
system.  In April 1991, EPA will complete a  Record of Decision describing the
selected remedy.

United States 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 (CERCLA1 as amended in 1986

              KERR-MoGEE (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
 mile of the West Branch of the DuPage 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.   Ownership of the facility changed from Lindsay to American Potash &
 Chemical in 1958 and to Kerr-McGee Chemical Corp. in 1967.  Operations 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 and private wells within 3 miles of the site.

     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,

      Status (February 1991);  In September 1988, Kerr McGee won a court
hearing against NRC, allowing Kerr McGee to disregard NRC's order to clean up
the creek.   In October 1990,  NRC ceded its regulatory authority over the site
to the  Illinois Department of Nuclear Safety.
United States 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

                          ANNE AHDNDEL COUNTY LANDFILL
                             Glen Burnie, Maryland

     Conditions at: listing  (June 1988):  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
continued elsewhere on  the site until 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  wells 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.   Tfle  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.

     Status (February 1991);   On September  7, 1990, the State signed a Consent
Agreement with Anne Arundel  County  to (1) conduct a remedial investi-
gation/feasibility study to  determine the type  and extent of contamination at
the site and identify alternatives  for  remedial action and (2) design the
remedy  selected.  In December  1990,  the county, with State oversight, started
field work on the remedial investigation.
 United States 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

                                  MIDVALE SLAG
                                 Midvale, Utah

     Conditions at listing (June 1986):   Ihe Midvale Slag Site covers 300
acres  in Midvale,  Salt laJce 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 contaijis
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 440,000
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.

       Status (February 1991);   EPA emergency staff is fencing the site to
prevent  people and animals from coming into direct contact with hazardous
materials.

       In mid-1991,  EPA plans to start a remedial investigation/feasibility
study  to determine the type and extent of contamination at the site and
identify alternatives for remedial action.
United States 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

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

      Conditions at  listing  (January 1987) ;  The Wasatch Chemical Co.  (Lot 6)
 Site covers 3.7 acres in Salt Lake City,  Salt Lake County,  Utah. Wasatch
 began formulating 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.
 During an  inspection  in  June  1985,  the  State  found 48 drums holding ignitable
 and reactive liquids  and 13 pressurized gas cylinders in poor condition;
 several of the drums  were leaking.   Residential and commercial 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 ir.to
 the Jordan River.

      Tests conducted  by  the State  in June 1§85 detected several chemicals,
 including  pesticides  and 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  can^l is used primarily for
 industrial, irrigation (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 regulated 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.
                       1991) ;  Under a pay-Mai  consent narrpg^ issued by the
State on September 30, 1988, the PRPs have conducted a remedial investigation/
feasibility study to determine the type and extent of contamination at the
site and identify alternatives for remedial action.  The remedy planned will
cover contaminated ground water,  soils,  sludges,  and other wastes, as well is
proper disposal of the dioxin  materials stored on-site.
United States 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

                     MESA AREA GROUND WATER CONTAMINATION
                                 Mesa, Arizona

      Conditions at listing  (June 1986);   Volatile organic solvents contam-
 inate four wells in Mesa,  Maricopa County, Arizona.  Trichloroethylene,
 tetrachloroethylene, 1,1-dichloroethylene, 1,1,1-trichloroethane, and Freon-
 113 were detected  in tests conducted  by the Arizona Department of Health
 Services and the City of  Tempe.   One  well is owned by the City of Mesa and
 operated by Motorola, Inc.,  to provide water for industrial purposes at its
 nearby plant.  The other  three are owned  by the Salt River Project and pump
 into the Tenpe Canal, a source of irrigation water for about 20,000 acres and
 a source of raw water for the South Tenpe Municipal Water Treatment Plant.

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

      EPA is in the process  of identifying potential sources of the
 contamination.

      Status (February 1991);  EPA has dropped this site from the proposed NPL
because the Motorola, Inc.,  plant,  the only« source of contamination EPA has
 identified, is subject to the corrective  action authorities of Subtitle C of
the Resource Conservation and Recovery Act.
United States 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

                                 KUNIA WELLS  I
                   County of Honolulu, Island of Oahu, Hawaii

      Conditions at listing fOctober 1984);   The Kunia Wells I Site consists of
four drinking water wells that are owned and operated by the City and County
of Honolulu.   Ihe 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.   Kunia Wells I are part of a distribution system
that provides drinking water to 21,000 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 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 contamination
results from  the application of FIFRA-registered pesticides.  Hence, EPA is
continuing to propose the sites for the NPL.

      Status  (February 1991):  EPA has decided  not to place this site on the
NPL at  this time because it is in the process of developing a general strategy
for addressing contamination from agricultural  chemicals in ground water under
FIFRA.
 United States Environmental Protection Agency / Remedial Response Program

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 National Priorities List

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

                                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 dibromo-
chloropropane (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  wells are part of the Wjnia
distribution system that provides drinking water to about 13,700 people.

     There are severed, 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 NFL 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.

     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.

      Status  (February 1991);   The treatment plant has been operating since
May 1986.

      EPA has decided not  to place this site on the NPL at this time because
it is in the  process of developing a  general strategy for addressing
contamination from agricultural chemicals in ground water under FIFRA.
 United States 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

                                 MTT.TTANI WELLS
                   County of Honolulu,  Island of Oahu,  Hawaii

      Conditions at listing (October 1984):   The Milliard. Wells 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  contaminated with
 dibromochloropropane (DBCP) and trichloropropane (TCP),  according to tests
 conducted by the Hawaii Department of Health and other government agencies.
 Three of the wells are presently not being used.  The  Milliard wells are part
 of  a  distribution system that provides drinking water  to about 19,500 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
 Rcdenticide 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 carton
 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.

       Status  f February 1991);  The treatment plant has been operating since
March 1986.

       EPA has decided not to place this site on the NPL at this time because
 it  is in the process of developing a general strategy  for addressing
contamination from agricultural chemicals in ground water under FIFRA.
United States 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

                                  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  distribution system which
 provides drinking water to 64,000 people in the area of  MoGrew Point,  Pearl
 Harbor, and part of Hickam Air Force Base.  The well is contaminated with
 dibromochloropropane  (DBCP) and  trichloropropane (TCP) ,  according to analyses
 conducted by the U.S. Navy and other government agencies.

     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.  The Navy is
 currently reviewing alternative  treatment methods  for  DBCP removal.
     Status  (JanuaTy 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 FTFRA-registered pesticides.  Hence, EPA is
continuing to propose the  sites for the  NPL.

      Status (February  1991) ;  The Navy  continues to sample the well.  No
treatment system has been  installed due  to  the low levels of DBCP and TCP
found at the site.

      EPA has decided not  to place this  site  on the NPL at this time because
it is in the process of developing a general  strategy for addressing
contamination from agricultural chemicals in  ground water under FIFRA.
United States 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

                                 WAIPAHU WELLS
                   County of Honolulu, Island of Oahu, Hawaii

      Conditions at listing (October 1984) ;   The Waipahu Wells 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.  Ihe Waipahu
 Wells are  part of a distribution system which serves 13,700 people in Waipahu,
 Ewa,  and Waianae.   All the wells have been closed.

      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 ncBnerous 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 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.
      Status  rFgbTnary 1991) ;   The treatment plant has been operating since
July 1987.

      EPA has decided not to place this site on the NPL at this time because
it is in the  process of developing a general strategy for addressing
contamination from agricultural chemicals in ground water under FIFRA.
United States 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

                            WAIPIO HEIGHTS WELLS II
                   County of Honolulu,  Island of Oahu,  Hawaii

     o->ndi ti,ons at listing (October 1984) :   The Waipio Heights Vfells II Site
consists of  two drinking water wells 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 that provides drinking water to
3,400 people in the Waipio Heights  area.

     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.
             (Jair^ry 1986) :  EPA received numerous comments on the six sites
in Hawaii, which were the  first sites propqsed 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
Rodent icide 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.
      Status fFPbrtiary 1991) ;  EPA has decided not to place this site on the
NPL at this time because it  is in the process of developing a general strategy
for addressing contamination from agricultural chemicals in ground water under
FIFRA.
United States Environmental Protection Agency / Remedial Response Program

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

                                  CHEMPLEX CD.
                             Clinton/Camanche,  Iowa

                            (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  1963.  Wastes
 generated by this facility include peroxides,  mineral spirits, vinyl acetate,
 and various organic hazardous substances such as styrene,  benzene, toluene,
 and polyarcmatic hydrocarbons.  Unknown quantities of these wastes were
          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 fron 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 polyaronatic hydrocarbons and the other organic chemicals
identified above, according to tests conducted by the company and its consul-
tants.   The company has recovered previously released hazardous substances and
taJcen  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 f7^nii^^Y ipflfi) :  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 NFL.   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 Chenplex plant signed an Administrative Order on Consent under CERCLA
Section 106.  The order calls for those potentially responsible parties (PRPs)
to characterize an on-site landfill, sample Rock Creek, which is downgradient,
and inprove 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.
      Status fFflfrrvwy 19911 :   EPA has dropped this site from the proposed
NFL.

      The present operator is conducting a RCRA facility investigation for the
RCRA solid waste management units on the site.  For the landfill and debut -
anized aromatic concentrate units on the site, the PRPs are conducting a
remedial investigation/feasibility study to determine the type and extent of
contamination.   The work is under a CERCLA Section 104 order issued in
December 1989.

      On September 28, 1990,  EPA and the PRPs signed a Consent Decree under
CERCLA Section  104 requiring the PRPs to construct a system to pump and treat
contaminated ground water.


United States  Environmental Protection Agency / Remedial Response Program

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


                                  t INUt'lT 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
 2.2 acres; however,  contamination originating at the facility may cover a much
 greater area.   A municipal well field is 1,800 feet northeast 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 iygiicri  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 PCS soil  contamination,  as well as the potential for ground water
 contamination in the immediate vicinity gf the Findett facility.  Findett
 installed monitoring wells and analyzed ground water for PCBs.

     Status  fi7an'"Ty 1986) ;  In July 1985, EPA identified volatile organic
 compounds in shallow on-site monitoring wells, and developed a workplan for a
 remedial investigation/feasibility study (RI/FS) to determine the type and
 extent of contamination and identify alternatives for remedial action.

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

     EPA began the RI/FS in August 1987 after Findett declined to do the work.

     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.
     Status  ^February
EPA has dropped this site from the proposed NPL.
      In January 1990,  EPA sampled surficial soil on the Findett property,  as
     as adjacent properties,  and is evaluating the analytical data to
determine if additional cleanup measures are necessary.

     On May 14,  1990, EPA and Findett signed a Consent Decree under CERCLA
Sections 106 and 107 calling for Findett to (1) pump and treat shallow
contaminated ground water prior to disposal into the sewer system and (2)
          PCB-contaminated soil off-site for treatment or disposal.
      Ground water treatment under the May 1990 Consent Decree is scheduled to
begin in early 1991, and  soil treatment later in the year.
 United States Environmental Protection Agency / Remedial Response Program

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 Superfund hazardous waste site listed under the
 Comprehensive Environmental Response. Compensation, and Liability Act (CERCLAI as amended in 1 986

                             QUAIL RUN MOBILE MANCR
                              Gray Summit, Missouri

      Copri'ttions  at  lifting (September 19831 ;  Quail Run Mobile leaner 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 samples 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.  Sane of the residents
 had ofno to  the  trailer park  from Tines  Beach, Missouri.
      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 19841 ;  A few families are still residing at Quail  Run.  The
 site is scheduled to be cleaned up 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 not taking final action on this site because it does not  meet the
 criteria currently specified to place a site on the NFL.  EPA is considering
 revising the National Contingency Plan (NCP) , the Federal regulation  by which
 CERCLA is implemented, to permit Quail Ri^n and similar sites where OX has
 issued a health advisory to qualify for the NFL.

      status f-,Tannary 1986l :  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 September 16, 1985, EPA revised the NCP to allow placing Quail Run and
 similar sites on the NFL.

       Status (February 1991) :  EPA has dropped this site from the proposed NFL
 because it no longer meets the health advisory.

       As part of the removal action, EPA excavated soils containing more  than
 1  part per billion dioxin to a maximum depth of 4 feet or to bedrock.
 Excavated areas were filled in with clean material to the original grade.
 Pending final disposition, the excavated soils are temporarily  stored in  on-
 site,  fully enclosed steel structures surrounded by a secured 6-foot  chain
 link fence.   The Missouri Department of Natural Resources maintains the
 temporary facility.

       During the cleanup, 28 mobile hones were decontaminated.  For
verification,  interior surf aces of the homes were sampled according to OX
              Decontamination of exterior samples was also verified.

       The mobile home park is now restored and recocupied.
United States Environmental Protection Agency / Remedial Response Program

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

           BURLINGTON NCKBffiRN RAUHDAD  (SOMERS TIE-TREATING PLANT)
                                Soners,  Montana
     Conditiora at listing (Octcfayf 1?94) ?  Burlington Northern Railroad has
treated ties en a 4.5-acre sits in Sonars, 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 ^gp-«e«> 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 Sonars 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 swairp
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 f.7ajT"flry IW?) ; In May andtfune 1985, Burlington Northern removed
contaminated sludge, soil,  and water from the swamp pond under a CERC1A
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 "** *•'* «"• 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 sidled a Consent Order under CFRCTA Section  106  for  a
remedial investigation/feasibility study  (RI/FS) covering the  old lagoon.   The
RI/FS  activities are scheduled to be completed  in approximately January  1987.

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

     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 Endangerment A*""**"""""* naxnt  to EPA for the old lagoon.

     EPA may also pursue cleanup under RCRA authorities and will  ensure that
ths cleanup protects public health and the  environment.  EPA can later
repropose the site for the NFL if it determines  that the owner or operator is
unable or unwilling to clean up the sits  effectively.
                        Q<
                               EPA has dropped this site from the proposed
NFL.  Burlington Northern and the U.S. Government have signed a Consent Decree
requiring the company to implement the cleanup alternative in the Record of
Decision signed in 1989 and to  reimburse the Government for 100 percent of
     M^^^VW^^^
     response
      The selected alternative calls for land treatment of contaminated soils
in a 10-acre plot and hot water flushing of contaminated ground water, with
ozone/ultraviolet or peroxide/ultraviolet treatment at the surface.  In-situ
biological treatment will be used for residual ground water and soil
contamination.  Field activities began late in 1990.
United States Environmental Protection Agency / RemedW 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

                                 CXMLT OIL GO.
                                Billings, Montana

      Conditions at listing (June 1988):   The Comet oil Co. site covers
 approximately 10 acres on Frontage 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
 Bair'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-dimethylphenol,
 naphthalene,  and trans-l,2-dichloroethylene, are present in an off-site
 downgradient monitoring well, according to MPA tests conducted in 1985.
 Petroleum products and solvents are in soils throughout 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 5,500 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.

       Status  (February 1991);  In response to public comments, EPA re-
 evaluated the site documentation and the site's score on the Hazard Ranking
 System used to assess sites for the NFL.  Because the score is now below the
 cutoff point  EPA has established to include a site on the NFL, this site is
being  dropped from consideration for the NFL at this time.
United States 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-MOGEE CORP.  (GUSHING PLANT)
                               Gushing, Oklahoma

     Conditions at  listing fOctofogr 1989);   Kerr-MoGee Corp. 's Gushing Plant
cavers 116 acres in Gushing,  in a rural  area of Payne County,  Oklahoma. Since
1915, numerous oil  and pipeline caipanies have occupied various portions of
the site.  In 1956, Kerr-MoGee acquired  a refinery on the site and operated it
until 1972.   During 1963-65,  Kerr-MoGee  processed uranium in a plant on the
site for the Atomic Energy Commission  (AEG).   From early 1965 until February
1966, Kerr-MoGee 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
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.
                                            «
      Status (February 1991):   In response to  public comments, EPA re-
evaluated the site  documentation  and the site's score on the Hazard Ranking
System used  to assess  sites for the NFL.  Because the score is now below the
cutoff point EPA has established  to include  a  site on the NPL, this site is
being dropped from  consideration  for the NPL at this time.
 United States 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

                         RICHARDSON  FLAT TAILINGS
                               Summit County, Utah

      Conditions at "H sting (June 1988);   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.  They came from the Keetley Ontario Mine and  other metal
 mining operations currently owned by United Park City Mines (UPCM) .  The most
 recent use of the area for tailings disposal was during 1975-81,  when  UPCM
 leased its mining properties to either Park City Ventures or Noranda Mining,
 Inc.   The  two companies constructed and  operated milling facilities on UPCM
 properties.

      Both  the Utah Department of Environmental Health and EPA have
 investigated 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 tailings,  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
 tailings.   Water diverted from Silver Creek is used to irrigate pastureland
 and hay fields within 3 stream miles of  the»site.

      High-volume air sampling at Richardson Flat Tailings documented that
 arsenic, cadmium,  lead,  and zinc were released to the air.   An estimated 4,500
 people live year-round within 4 miles of the tailings.

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

      This  mining site is potentially eligible for cleanup funds from the state
 of Utah's  approved program under the Surface Mining Control and Reclamation
Act of 1979 (SMCRA) .   EPA is developing  a policy for listing such sites.  This
 site  is being proposed for the NPL at this time to avoid delay in starting
CERCLA activities.
      Status  (F*ab'r|iaT"y iQQi)?   In response to public comments, EPA re-
evaluated the site documentation and the site's score on the Hazard Ranking
System used to assess sites for the NPL.  Because the score is now below the
cutoff point  EPA has established to include a site on the NPL, this site is
being dropped from consideration for the NPL at this time.
United States Environmental Protection Agency / Remedial Response Program

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 United States
 Environmental Protection
 Agency

 For further information, call the
 Superfund Hotline, toll-free at
 1-800-424-9346 or 703-920-9810
 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
  Division. 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, KS66101
CML: (913) 551-7052
FTS: 276-7052

Region 8
Superfund Remedial Branch. 8HWM-SR
999 18th Street. Suite 500
Denver, CO 80202-2405
CML: (303) 294-7630
FTS: 330-7630

Region 9
Waste Management Division. H-1
75 Hawthorne Street
San Francisco, CA 94105
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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