MIDLAND
PRODUCTS
ARKANSAS
EPA ID# ARD980745665
SITE DESCRIPTION
EPA REGION 6
CONGRESSIONAL DISTRICT 02
Yell County
Updated: 10/01/02
Other Names:
Old Midland Products Company
Location:
Approximately 50 miles northwest of Little Rock, Arkansas.
North of Highway 10 within Yell County.
One-half mile east of Ola, Arkansas.
Population:
Setting:
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Approximately 190 people live in this agricultural area.
! A residence sits at the southwest corner of the site.
! Nearest drinking water well is approximately 400 feet west of the southwest
corner of the site (at the Nieley residence).
! The site is on a flat area with a gentle north-northwest slope (2-3%).
! The total site is approximately 37 acres, with two acres of the site occupied by
lagoons and the former treatment building (known as the "plant" area).
! Seven process lagoons range in surface areas from approximately 125 square
feet to 7,200 square feet and have maximum depths of 3.5 feet and 6 feet.
! Runoff paths from the lagoon area feed into an intermittent stream which
continues off-site.
Hydrology:
! The site is situated in the lower Atoka geologic formation which is characterized by
numerous fractures and joints.
! Two water-bearing zones have been identified at the site; (1) the upper zone at
20 feet consists of shales and weathered bedrock, and (2) the lower zone at 40 feet
consists of unweathered fractured bedrock.
! Ground water occurrence in the lower water-bearing zone is thought to be
closely associated with joints and fractures in the bedrock.
! The nearby private drinking water well is reportedly screened at 80 feet.
PRESENT STATUS AND ISSUES
The ground water pump and treatment phase was started in October 1993. After five years of ground
water pump and treatment, the State recommended that the pump and treatment system be shut down
for one year to determine the need for further ground water pump and treatment. The pump and
treatment system was shut down from July 1999 through July 2000. ADEQ evaluated the ground
water sampling results during the one year shut down period and determined that continued pump and
treatment was necessary to prevent contaminants from moving offsite. The funding to continue the
pump and treatment of the shallow groundwater started in March 2001 and will not exceed FY2003.
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EPA Publication Date: October 4, 2002
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WASTES AND VOLUMES
From the Remedial Investigation (RI), principal pollutants of concern at the site include:
! Pentachlorophenol: Maximum detected concentrations: Surface soil 790 ppm ground water (with
non-aqueous phase liquid): 12,000 ppm lagoon sediments - 5,900 ppm (ppm = parts per million).
! Polynuclear Aromatic Hydrocarbons: Maximum detected concentrations: Surface soil: 14,000 ppm
ground water (with non-aqueous phase liquid): 5,100 ppm lagoon sediments - 38,000 ppm
! Chlorinated dibenzo -dioxins and -furans (NB: 2,3,7,8-TCDD equivalents): Maximum detected
concentration: Surface soil - 0.095 ppb ground water (with non-aqueous phase liquid) 15.8 ppt lagoon
sediments - 42.8 ppb (ppb = parts per billion)
! RI estimates of the total fluid volumes in the lagoon yields 620,000 gallons; the estimated volume of
contaminated ground water is 450,000 gallons. The extent of soil contamination is estimated to be up
to 60,000 cubic yards.
SITE ASSESSMENT AND RANKING
NPL LISTING HISTORY
Site HRS Score: 30.77
Proposed Date: 10/15/84
Final Date: 6/10/86
NPL Update: No. 2
SITE MAP AND DIAGRAM
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Midfand {t,
Products ;
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EPA Publication Date: October 4, 2002
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MIDLAND PRODUCTS
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SITE HISTORY
! A sawmill/wood preservative processing plant operated at the site from 1969 to 1979.
! The site area, less the lagoon area, was sold to the Plainview-Ola Economic Development
Trust, Inc., in 1981.
! Remedial Action contract was awarded to Chemical Waste Management on March 1, 1991.
! The on-site incineration of the waste materials was completed in May 1993 with the treatment of
102,000 tons of creosote-contaminated sludge and soil.
! EPA reviewed and commented on the draft 5-year review for the Midland Products site. The
Five-Year Review Report was approved by EPA and signed by the Arkansas Department of
Environmental Quality Hazardous Waste Division Chief on June 14, 1999.
HUMAN HEALTH AND ECOLOGICAL RISK ASSESSMENT
! From exposure to contaminated on-site soils and/or run-off path sediments.
! From the ingestion of contaminated on-site soils and/or run-off path sediments.
! From the ingestion of contaminated ground water in the upper zone (not used as a drinking water
source).
! From exposure to contaminated surface waters.
! Migration of contaminants to the Petit Jean State Wildlife Management Area (1 mile north of the
site) is possible via run-off
RECORD OF DECISION
Signed: March 24, 1988
Soil Treatment:
! Thermal destruction of contaminated (>1 ppm PCP) soils, sludge and sediments.
! Place ash on-site and cover with a vegetated soil layer.
Other Remedies Considered
Reason Not Chosen
1. Containment
2. On-site Landfill
3. Biological Degradation
Technically questionable due to presence, though low,
of dioxins
Environmentally unacceptable
Technically infeasible
Violates Land Ban; high relative cost
4. No Action
MIDLAND PRODUCTS
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EPA Publication Date: October 4, 2002
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Ground Water:
! Pumping and treating contaminated ground water.
Other Remedies Considered
Reason Not Chosen
1. Containment/No Action
2. French Drain
Same as above
Technically infeasible
COMMUNITY INVOLVEMENT
! Community Involvement Plan: Developed 08/85, revised 12/88.
! Open houses and workshops: 05/86.
! Original Proposed Plan Fact Sheet and Public Meeting: 11/87.
! Original ROD Fact Sheet: 03/88.
! Milestone Fact Sheets: Open house 10/89; update 2/90 Arkansas Department of Pollution Control
and Ecology (ADPC&E); Public Meeting (ADPC&E) 2/90; Periodic Remedial Action (RA) updates
3/92 through present (ADPC&E)
! Citizens on site mailing list: 10
! Constituency Interest: Moderate; politicians and residents were extremely concerned with the costs
of the study. They did not oppose the remedy.
! Site Repository: Ola City Hall
TECHNICAL ASSISTANCE GRANT
! Availability Notice: 01/89
! Letters of Intent Received: None
! Grant Award: N/A
SITE CONTACTS
! Remedial Project Manager (EPA): Earl Hendrick, 214/665-8519, Mail Code: 6SF-AP
! State Contact (ADEQ): Clark McWilliams, 501/682-0850
! Attorney (EPA): Amy McGee, 214/665-8063, Mail Code: 6RC-S
! State Coordinator (EPA): Karen Bond, 214/665-6682, Mail Code: 6SF-AP
! Region 6 Ombudsman (EPA): Arnold Ondarza, (303) 312-6777
! Prime Contractor: ChemWaste Management
ENFORCEMENT
! PRP search was completed in June 1988.
! One PRP was identified but no viable PRP was found.
EPA Publication Date: October 4,2002 4 MIDLAND PRODUCTS
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BENEFITS
As a result of the incineration of 102,000 tons of contaminated materials, a source of contamination that
could affect the nearby community of Ola has been removed. The cleanup will prevent future
contamination of the shallow ground water which could impact the nearby wildlife refuge. The pump
and treatment remedy of the shallow ground water will reduce the remaining contaminants at the site.
MIDLAND PRODUCTS
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EPA Publication Date: October 4, 2002
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