Monday, January 26, 2015


Rock Road Industries, Inc., the owner of Operable Unit 1 (OU-1) of West Lake Landfill Site in Bridgeton, Missouri, has built this website to serve as an information portal based upon official documents, including EPA's 2008 Record of Decision, and letters, maps and drawings which can be reviewed and downloaded from the Records page of this website by the public at no expense.

Our goal is to provide our neighbors and other community stakeholders with the hard facts and scientific evidence about the Site and about EPA's Selected Remedy for the Site, as well as updates on the status of the Site. Additional information on the history of the Site is available on the History page of this website.

What is West Lake Landfill?

West Lake Landfill is a former sanitary landfill that closed in the 1970s. It is located just north and west of Lambert-St. Louis International Airport near the Highway 70/270 interchange. In 1973, a now-defunct trucking company mixed 39,000 tons of soil with 8,700 tons of a low-level radioactive material called leached barium sulfate and brought it to the landfill as “clean fill” material. The landfill used the material to cover compacted trash in two areas as part of routine operations. The Nuclear Regulatory Commission discovered this in 1976 and began its investigations in 1978. The Environmental Protection Agency added the landfill to its National Priorities List as a Superfund site in 1990.  After 30 years of testing, analysis and public involvement, the EPA selected a final site cleanup plan in 2008. But at the request of environmental groups, the EPA put the cleanup on hold in 2009 to conduct years more testing, analysis and public involvement. The new EPA-required studies are not expected to be completed until 2015 at the earliest.

Where are we now?

After many years of investigative study, in 2008, the EPA selected an enhanced capping and long-term monitoring remedy for Operable Unit 1 at the West Lake Landfill Site. EPA held hearings and accepted public comments for years before issuing a determination that the Selected Remedy was “protective of human health and the environment, complies with federal and state requirements that are applicable or relevant and appropriate, is cost effective, and utilizes permanent solutions and alternative treatment technologies to the maximum extent practicable.”

In early 2010, preparations were underway to perform the remedy when the EPA was asked to reconsider its determination. That request was granted, setting in motion additional research and analysis in the form of a supplemental feasibility study. Between January 2010 and December 2011, the PRPs worked in cooperation with EPA and with the input of the Missouri Department of Natural Resources (MDNR) to undertake the Supplemental Feasibility Study (SFS) in order to evaluate the Selected Remedy as compared to two excavation alternatives.

EPA approved the SFS in December 2011 and released the document for public review on the EPA website. We have also made the same document available to the public on the Records page of this website.

In 2012, following early consultation with the National Remedy Review Board, EPA directed the PRPs to undertake an additional groundwater sampling event to verify that groundwater conditions are consistent with earlier findings, and to undertake additional evaluations of remedial options. The PRPs submitted the Groundwater Monitoring Reports in 2012 and 2013, and are working to draft a comprehensive groundwater report for EPA in 2014. In addition, the PRPs submitted several work plans for the remaining evaluations to EPA in 2013, and are in the process of working with EPA to submit the remaining work plans in 2014.



Rock Road Industries, Inc. continues to see the enhanced landfill cap, with long term monitoring and use restrictions, as the most appropriate remedy for the protection of human health and the environment. We are ready, willing and able to continue our cooperation with MDNR and EPA, and will work with the other PRPs to resume implementation of the remedy selected by EPA through its 2008 Record of Decision, with EPA’s suggested enhancements.

Notice about Bridgeton Landfill

If you are seeking information about odors at the Bridgeton Landfill please visit the facility's website.

Latest Updates

October 29, 2014:

EPA October Update

October 20, 2014:
Isolation Barrier Alternatives Analysis of West Lake Landfill Superfund Site prepared.

July 8, 2013:
The PRPs submit the April 2013 Groundwater Monitoring Report to EPA detailing the results of that groundwater sampling event.

May 29, 2013:
Aerial Survey Shows Radiological Wastes Contained in Secure Areas of West Lake Landfill; No Public Health Risks Posed

"A March 2013 aerial survey of the West Lake Landfill at Bridgeton, Mo., has determined that radiologically-contaminated wastes buried there in the 1970s remain contained within secure, fenced areas of the Superfund site, and do not pose public health risks, according to a report issued today by EPA Region 7."

"The results of the ASPECT survey are consistent with previous studies that indicate the site's radiological wastes remain contained inside Operable Unit 1," EPA Regional Administrator Karl Brooks said. "The site is securely fenced and clearly marked with warning signs. Under these conditions, this material poses no health risks to the public. A person would have to illegally trespass onto the site to be exposed to elevated levels of radiation." Please read the full US EPA news release from May 29, 2013. Or download and view the complete ASPECT report.

April 22, 2013:
In response to an inquiry about West Lake Landfill from Sen. Roy Blunt, the Administrator of Region 7 of the Environmental Protection Agency wrote, "I want to assure [citizen's name] and you that people are not now exposed to unsafe radiation from the contaminated waste buried in OU-1 because the site is fenced to prevent public access. Groundwater beneath the site, which has been determined to be contaminated in isolated areas, is not now, never has been, and will not be used as a drinking-water source." See full text of EPA Response to Sen. Blunt (March 21, 2013).

March 8, 2013:
As it promised during the January 17 public meeting, on Friday March 8 EPA performed an aerial radiation survey of the West Lake Landfill site property using EPA’s remote sensing airplane ASPECT. EPA has indicated that the results of the flyover should be available for public release in a few weeks. Please visit EPA's web page for more information about ASPECT.

January 18, 2013:
EPA presents the Groundwater Sampling Results and EPA’s downhole gamma logging results during an EPA Public Meeting held January 17, 2013.

December 17, 2012:
The PRPs submit the Groundwater Monitoring Report to EPA detailing the results of the 2012 groundwater sampling event.

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Copyright 2013 by Rock Road Industries, Inc.