Region 5 Superfund (SF)

U.S. EPA REGION 5
MONTGOMERY COUNTY
DAYTON

Congressional District # 03

SANITARY LANDFILL CO. (INDUSTRIAL WASTE DISPOSAL CO., INC.)

EPA ID# OHD093895787
Last Updated: October, 2009

Site Description

The 36-acre Cardington Road Landfill Site (also known as the Sanitary Landfill Superfund Site) is a former solid waste landfill located approximately one mile south of the City of Dayton, Ohio.  The closest residence is located less than 150 feet from the site.  About 125,000 people draw drinking water from wells located within 3 miles of the site.  The site was originally developed as a sand and gravel mine, and subsequently used for solid waste disposal from 1958 until 1980.  The landfill accepted municipal wastes and various types of industrial wastes including solvents. 

Throughout the 1950s and 1960s, the Cardington Road Landfill (a.k.a. Sanitary Landfill and Industrial Waste Disposal Co., Inc. ) was primarily used for sand and gravel mining, although limited waste disposal may have occurred during mining operations.  Beginning in 1971, the site was operated as a solid waste disposal facility, and the excavated sand and gravel pits were filled with commercial, industrial, and municipal waste.  In 1980, after waste disposal activities ended, the site was covered with soil ranging in thickness from two to eight feet.  in 1987, EPA and the State of Ohio conducted a Remedial Investigation (RI).  The primary contaminants of concern affecting the soil, sediment, surface water, and landfill gas were identified as volatile organic compounds (VOCs), including benzene, trichloroethylene (TCE), toluene, and xylenes; other organics; and metals, including arsenic, chromium, and lead.

The United States Environmental Protection Agency (U.S. EPA) placed the site on the National Priorities List (NPL) on June 10, 1986.  A Remedial Investigation and Feasibility Study (RI/FS) was conducted from 1989 to 1992, and U.S. EPA finalized a Record of Decision (ROD) detailing the selected remedy in September 1993.  A three-party consent order between U.S. EPA, Ohio EPA, and a group of Potentially Responsible Parties (PRPs) was signed in June 1994 for the Remedial Design. 

Site Responsibility

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

Threats and Contaminants

Groundwater is contaminated with solvents and heavy metals including chromium, copper, cadmium, and lead. The soil contains solvents and the heavy metals chromium, copper, cadmium, and lead. Potential health risks to people include accidentally ingesting or coming into direct contact with contaminated soil, inhaling volatile organic compounds in indoor air and outdoor ambient air, and ingesting onsite groundwater.  These potential risks are being addressed as part of the cleanup process.  Access to the site is restricted by a fence.

Cleanup Progress

U.S. EPA, the State of Ohio, and several of the Settling Defendants, known as the Cardington Road Coalition (CRC), entered into a three-party Administrative Order by Consent (AOC) which was effective December 16, 1987. Pursuant to the AOC, the CRC performed an RI/FS for the site. The RI was completed on January 10, 1992, and the FS was completed on November 12, 1992. Subsequently, the ROD was signed on September 27, 1993.

The components of the remedy included a solid waste landfill cap, onsite subsurface gas controls, surface run-off controls, long-term monitoring, institutional controls, and a supplemental site investigation to determine if a ground water extraction/treatment system was necessary. The Consent Decree between U.S. EPA and the CRC was entered by the court on August 12, 1996, to perform the Remedial Design/Remedial Action (RD/RA). The RD was completed on April 16, 1996.  As a result of the supplemental investigation performed during the RD, it was determined that ground water extraction and treatment was not necessary at the site. The RA was initiated in July 1997.

During implementation of the RA, a new area of waste was identified.  During installation of landfill gas monitoring probes east of the site, a waste area was discovered and high levels of methane were found in investigative bore holes. Gas monitors were placed in nearby businesses. The landfill gas system was extended to include the waste areas found east of the site.  U.S. EPA and the Ohio EPA conducted a pre-final inspection on September 17, 1998, which concluded that all construction was completed for the project. 

A five-year review was completed for the site on September 25, 2002.  A second five-year review was completed on September 25, 2007.  This review concluded that the remedy is protective of human health and the environment while migration and treatment of landfill gases is maintained.   Long-term protectiveness requires compliance with effective institutional controls.  Compliance with effective institutional controls will be ensured by implementing, maintaining, and monitoring effective institutional controls, as well as maintaining the site's remedy components.

Contacts

Remedial Project Manager, U.S. EPA
linda kern (kern.linda@epa.gov)
(312) 886-7341

Community Involvement Coordinator, U.S. EPA
virginia narsete
(312) 886-4359

Aliases

CARDINGTON ROAD LANDFILL
CARDINGTON ROAD LDFL AKA SANITARY LDFL
SANITARY LANDFILL CO. (INDUSTRIAL WASTE)
SANITARY LDFL CO
SANITARY LDFL CO IND WASTE

 

Site Profile Information

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