EPA in Missouri

West Lake Landfill

Site Summary

The West Lake Landfill Superfund Site is located in Bridgeton, Mo. The site consists of several inactive landfills, including the West Lake Landfill and the Bridgeton Landfill. Originally used for agriculture, the land became a limestone quarrying and crushing operation in 1939. Beginning in the early 1950s, portions of the quarried areas and adjacent areas were used to dispose of municipal refuse, industrial solid wastes, and construction/demolition debris. In 1973, around 8,700 tons of leached barium sulfate from the Manhattan Project, a World War II nuclear bomb development program, was mixed with approximately 38,000 tons of soil and used to cover trash being dumped during daily operations.   

In 1990, the U.S. Environmental Protection Agency listed the site on the National Priorities List under the Comprehensive Environmental, Response, Compensation and Liability Act of 1980 (Superfund law). The Agency listed the entire 200-acre facility and has since designated multiple Operable Units at the site to manage various areas and environmental media. Operable Unit 1 (OU-1) contains radiologically-impacted material (RIM). Operable Unit 2 (OU-2) does not contain radiological material. Operable Unit 3 (OU-3) will address site-wide groundwater.

The adjacent Bridgeton Landfill, which is a part of OU-2, is part of the Superfund Site, but remains under the regulatory authority and oversight of the Missouri Department of Natural Resources.

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.

News and Updates

image of West Lake Update, August 11, 2016Community Dialogue Meeting Preview (PDF)(1 pg, 710 K, 8/11/2016)

In March of this year, EPA began hosting a series of Community Dialogue meetings in Bridgeton to discuss the remedial options being developed for the West Lake Landfill. The most recent meeting focused on the 2008 Record of Decision and the “cap in place” remedy. The next meeting on August 15... more

image of West Lake letter providing status overview of site remedy evaluation, August 4, 2016EPA Letter Providing Overview of Status of Development to Support EPA's Evaluation of Site Remedy Decision (PDF)(5 pp, 377 K, 8/4/2016)

The U.S. Environmental Protection Agency is providing this letter to provide an overview of the status of various studies' work plans and related deliverables developed to support the EPA's evaluation of... more

PUBLIC NOTICE

Image of record foldersEPA Region 7 announces the availability of the Administrative Record for the Administrative Settlement Agreement and Order on Consent for Removal Actions... more

West Lake Update Thumbnail - July 13, 2016Pyrolysis Testing Results Indicate Heating Did Not Increase Radon (PDF)(2 pp, 184 K, 7/13/2016)

EPA Region 7 released results today from laboratory tests that indicate heating radiologically impacted material (RIM) from the West Lake Landfill did not increase radon production. In the case of wet or saturated RIM, heating the material actually... more

West Lake Landfill - Radon Emanation Coefficient StudyRadon Emanation Coefficient Study (PDF)(2,110 pp, 49.8 MB, 7/13/2016)

Tetra Tech, Inc. is submitting electronically the analytical laboratory report with associated data validation report regarding a study... more

West lake landfill - comprehensive sampling plan for monitoring sulfur dioxide in ambient air - thumbnailComprehensive Sampling Plan for Monitoring Sulfur Dioxide in Ambient Air (PDF)(37 pp, 103.4 MB, 7/7/2016)

Stantec Consulting Services, Inc. has prepared this comprehensive sampling plan (CSP) to install and operate ambient air monitors... more

The Contamination

Soil Sample Thumbnail 2

Community Health

Community Health Thumbnail

Going Forward

image of updated 2016 timeline, May 24, 2016

Site Map

West Lake Landfill Map - 2016