Superfund Information Systems: Site Profile

Superfund Site:

LEE'S LANE LANDFILL
LOUISVILLE, KY

Cleanup Activities

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Background

The 112-acre Lee's Lane Landfill Superfund site is in southwest Louisville, Kentucky. Much of the site was used for a quarry in the 1940's and 1950's, and later operated as a landfill through 1975. EPA placed the site on the Superfund program’s National Priorities List (NPL) in 1983 because of contaminated groundwater, surface water, sediment, soil and air resulting from landfill operations. EPA, the Kentucky Department for Environmental Protection Exit(KDEP), and the Louisville and Jefferson County Metropolitan Sewer District (MSD)Exit, one of the site’s potentially responsible parties (PRPs), have investigated site conditions and taken steps to clean up the site in order to protect people and the environment from contamination. A water line connects nearby residences and businesses to the public water supply. EPA removed the site from the NPL in 1996.

By monitoring groundwater and air and undertaking Five-Year Reviews, EPA, KDEP and the Louisville and Jefferson County MSD continue to protect people and the environment from site contamination.

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What Has Been Done to Clean Up the Site?

EPA led site investigation and cleanup activities in cooperation with KDEP. Since 1992, the Louisville and Jefferson County MSD, one of the site’s PRPs, has led operations and maintenance (O&M) activities at the site.

In 1980, the Kentucky Department of Hazardous Materials and Waste ManagementExit installed a gas venting system on site. In 1981, the owners of the site pumped liquid wastes from the exposed drums found near the Ohio River and transported hazardous wastes off site for disposal. The site owners also removed drums and other wastes from the riverbank and buried them on site. EPA conducted cleanup activities at the site in 1987 and 1988 and removed the site from the NPL in 1996. Groundwater and air monitoring are ongoing.

EPA completed the site’s fifth FYR in 2013; it was inconclusive as to whether the cleanup currently protects people and the environment. To address the questions raised by the 2013 FYR, KDEP conducted surface and subsurface soil sampling at 28 locations on site in April 2013. EPA conducted soil gas sampling along the site perimeter in June 2013 that identified six contaminants that were migrating off site. In response, EPA conducted vapor intrusion sampling in June 2014 in 33 homes in the adjacent Riverside Gardens community to determine whether gases from the landfill were migrating into the homes. EPA completed the vapor intrusion study and determined no homes were being impacted by gases from the landfill. In addition, methaneExit is no longer a threat. KDEP installed five new groundwater monitoring wells at the site in May 2014 and have monitored semi-annually since that time. The sampling results are available from KDEP.

EPA met with the settling PRPs in March 2014 to discuss the results of the 2013 FYR and the need for additional data.  The PRPs prepared a comprehensive Conceptual Site Model (CSM) that summarizes all of the data gathered from 2013 to 2015 to determine what FYR concerns have been addressed, and where further work is needed. In December 2016, EPA, KDEP, and the PRPs visited the site to document the condition of the site surface.

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What Is the Current Site Status?

The most recent Five Year Review was published by EPA HQs in 2018. The remedy at the Site currently protects human health and tlie env iionment because tliere are cunently no completed exposure patliways.

EPA issued the site’s long-term cleanup plan in 1986. It included cleaning up surface waste areas; installing riverbank erosion protection controls; sampling groundwater; removing exposed drums from the site and disposing of them at an off-site landfill; placing a cap over contaminated soil and exposed wastes; placing cautionary signs at the site; and installing a gate to control access to the site.

Ground water and air monitoring are ongoing at the site. EPA completed the Sixth FYR on August 30, 2018. The conclusion of the review is that the remedy is currently protective of human health and the environment.

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Enforcement Information

Enforcing environmental laws is a central part of EPA’s mission to protect human health and the environment. When warranted, EPA will take civil or criminal enforcement action against violators of environmental laws.

In 1991, the EPA negotiated a legal agreement with the Louisville and Jefferson County MSD, one of the site’s PRPs, to perform O&M activities at the site for 29 years, with oversight provided by KDEP. In 1992 and 1993, the EPA reached settlements with over 20 site PRPs. The EPA used the settlement funding for site investigation and cleanup activities.

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