Mountain Pine Pressure Treating

Plainview, Arkansas

Site Description

The Mountain Pine Pressure Treatment (MPPT) property, a 95-acre site in
Plainview, AR, has several inactive abandoned wood pressure treating facilities
that operated from March 1962 until about February 1986. Three abandoned
facilities are situated on the MPPT Site: (1) the Plainview Lumber Company; (2)
the chromated copper arsenate and pentachlorophenol (PCP) plants; and, (3)
the chromated copper arsenate treatment plant. The facilities treated structural
timbers with solutions of PCP, chromate copper and arsenic.

Current Site Status and Cleanup Actions to Date

•	In December 1987, EPA conducted a removal action (RA) to alleviate
liquid and sludge releases from a recovery holding pond (RHP).

•	In February 1988, EPA constructed a 2-foot cap to contain
approximately 2,500 cubic yards of sludge mixing with solidification
additives.

•	In January and February 1991, EPA removed the concrete containment
system surrounding the chromated copper arsenate cylinder and
storage tanks. Wastewater was removed and disposed of off-site.

•	The Site was added to the National Priorities List (NPL) in July 1999.

•	In February 2002, EPA completed the Remedial Investigation (Rl) to
identify the extent of contamination at the Site.

•	In August 2004, EPA completed the Treatability Study Field Sampling
for site stabilization and solidification of site contaminants.

•	In August 2004, EPA completed the revised final Feasibility Study (FS).

•	After completion of the RI/FS, the selected remedy for the Site was
chosen to be the treatment of the contaminated soils and sediments
exceeding the remedial goals through a stabilization/solidification mixing
process, demolition of site structures, and asbestos abatement.

•	On March 28, 2005, the EPA approved the remedial design (RD).
Funding was received to conduct the remedial action which started in
March 2005 and was completed on September 27, 2005.

•	EPA has treated approximately 24,000 cubic yards of soil contaminated
with arsenic, copper, lead, cadmium, and chromium. The treatment
areas also include the contaminant PCP.

•	EPA awarded the Town of Plainview a Superfund Redevelopment
Initiative grant to assist the town in developing potential reuse options
for the Site. The Town of Plainview developed a Land Use
Development Plan, which will assist EPA in selecting a cleanup plan
most appropriate for the town's reuse plans.

Current Funding Status

•	To date, approximately $1.8 million has been spent for the RI/FS.

Key

Accomplishments

•	In March 2005,
EPA provided
funding in the
amount of $5.7
million for
implementation of
the remedial
action.

•	The Treatability
Study Field
Sampling for site
stabilization and
solidification of site
contaminants was
completed on
August 30, 2004.

•	EPA has treated
approximately
24,000 cubic yards
of soil

contaminated with
arsenic, copper,
lead, cadmium,
and chromium.
The treatment
areas also include
the contaminant
PCP.

•	EPA awarded the
Town of Plainview
a Superfund
Redevelopment
Initiative grant to
assist the town in
developing
potential reuse
options for the
Site.

For more information on
the projects at this site,
please read the Mountain
Pine Pressure Treating
Fact Sheet on the Region
6 Superfund Web site.

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PR 0^1

•	The RD cost was $138,000.

•	In March 2005, EPA provided funding in the amount of $5.7 million for
implementation of the remedial action.

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