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Congressional District # 08


EPA ID# OHD980611800
Last Updated: November, 2011

Site Description

The 65-acre Miami County Incinerator site, located in Miami County, Ohio, contains the following areas of concern: the South Landfill, the North Landfill, the Liquid Disposal Area, the Ash Disposal Pit, the Ash Pile and the Groundwater. The incinerator and landfills were opened in 1968, to process and dispose of municipal and industrial wastes. Combustible wastes were to be incinerated and the non-combustible wastes were to be landfilled; however, large volumes of combustible wastes were landfilled along with non-combustible wastes. Liquid wastes including waste oils and solvents were dumped or buried onsite. A contaminated plume of organic chemicals flowed from the liquid disposal area into the Great Miami River. This plume contaminated wells of many residents who live near the site. Municipal wells serving 19,000 people are located within three miles of the site. The plume contaminates a sole source aquifer.

The United States Environmental Protection Agency (U.S. EPA) proposed the site to the National Priorities List (NPL) on September 8, 1983, and finalized the Site on the NPL on September 21, 1984.

Site Responsibility

This site is being addressed through federal, state, and potentially responsible parties' actions.

Threats and Contaminants

Volatile organic compounds (VOCs) and heavy metals including arsenic, barium, and cadmium were detected in groundwater near the Liquid Disposal Area. Sediments along the unnamed creek are contaminated with pesticides and polychlorinated biphenyls (PCBs). VOCs, polycyclic aromatic hydrocarbons, PCBs, dioxins, pesticides, and heavy metals including arsenic, lead, cadmium, and chromium were detected in soil below the surface of the Liquid Disposal Area. Potential health risks exist for those who ingest contaminated water or soil. Cleanup workers and children playing on the site may be most at risk. However, the site does have ground cover, lessening the opportunity for direct contact with the soil. 

Cleanup Progress

The potentially responsible parties (PRPs) voluntarily connected residents with affected wells to City of Troy water in 1989-1990. U.S. EPA completed a Record of Decision (ROD) for the site in June 1989. A Consent Decree (CD) between U.S. EPA and the PRPs was lodged with the court on December 18, 1989. The CD was not entered by the court until March 30, 1993.

The PRPs took the following actions. The Remedial Action was designed in 1993-1994. In 1994, the Ash pit was capped with an impermeable cap. In 1995, the Ash Pile was placed on the South Landfill which was then capped. In 1996, the North Landfill and Liquid Disposal areas were capped, a soil vapor extraction (SVE) system was installed in the Liquid Disposal area and a groundwater extraction and treatment system was installed.

Between 4,000,000 and 6,000,000 gallons of contaminated groundwater are being extracted and sent to the Troy Treatment Plant for treatment each month. The SVE system met the performance standards for VOC removal and was shut down on April 5, 2000. Groundwater treatment will continue until groundwater standards are met, which may take 10 to 15 years. 

A Five-Year Review Report for the site was issued on September 20, 2000. The review concluded that the remedial action taken at the site remains protective of public health and the environment. The Second Five-Year Review Report for the site was issued on September 14, 2005, and U.S. EPA completed the Third Five-Year Review Report on June 14, 2010.  Both reports concluded that the remedial action taken at the site remains protective of public health and the environment. Groundwater treatment continues at the site.  The PRPs are currently performing pilot tests to determine whether or not in-situ treatment will accelerate cleanup of the groundwater plume. 

The next five-year review is due to be completed by June 14, 2015.



Property Reuse

Currently, the property is owned by Miami County. Located on the property is a waste transfer station and offices for the Miami County Engineering office. None of the buildings are on the former landfills or the former liquid disposal area.


Remedial Project Manager, U.S. EPA
stephanie linebaugh (linebaugh.stephanie@epa.gov)
(312) 353-2315

Community Involvement Coordinator, U.S. EPA
susan pastor
(312) 353-1325

Site Profile Information

This profile provides you with information on EPA's cleanup progress at this Superfund site.


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