Thursday, January 19, 2017


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 addition, the PRPs submitted work plans for the remaining evaluations to EPA in 2013 and 2014, and are in the process of working with EPA to complete the additional evaluations under the work plans in 2015.  EPA has also asked for additional investigation to fully define the area of radiologically impacted materials and the PRPs are working with EPA on performing that work.



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 improvements and odor control at the Bridgeton Landfill, please visit the facility's website. 

Latest Updates

August 15, 2016

EPA began hosting a series of Community Dialogue meetings to discuss the remedial options being developed for the West Lake Landfill. Read Update on Latest Meeting

July 13, 2016

The EPA released pyrolysis testing restults that indicated that heating did not increase radon. Link to Update Here

May 19, 2016

The EPA presented a websinar to discuss air sampling results and other items. Link to Webinar Here

May 6, 2016

The EPA released an abbreviated work plan for a remedial investigation addendum and a final feasibility study for the West Lake Landfill Site. Link to Work Plan Here

April 28, 2016

The EPA finalized an Administrative Settlement Agreement and Order on Consent (Settlement) directing Bridgeton Landfill to start work on several critical components of the isolation barrier system in the North Quarry portion of the West Lake Landfill Site. Press Release Here

March 11, 2016

EPA Region 7 Administrator Mark Hauge sent a letter March 11 to Missouri Attorney General Chris Koster. The letter is in response to a letter from Koster to Hague on March 9. Link to Letter Here

March 2016

Answers to questions submitted to EPA Region 7 during a Community Dialogue Meeting in Bridgeton, Missouri on March 2. Link to Q&A Here, Information Presented During Meeting Is Here

February 25, 2016

Acting EPA Region 7 Administrator Mark Hague sent a letter February 25 to Missouri Rep. Bill Otto. The letter is in response to a letter from Otto to Hague on February 9. Link to Letter Here

EPA Updates

August 11, 2016

EPA, August 11, 2016 Update

July 13, 2016

EPA, July 13, 2016 Update

June 28, 2016

EPA, June 28, 2016 Update

June 15, 2016

EPA, June 15, 2016 Update

May 26, 2016

EPA, May 26, 2016 Update

April 28, 2016

EPA, April 28, 2016 Update

April 13, 2016

EPA, April 13, 2016 Update

March 24, 2016

EPA, March 24, 2016 Update

March 1, 2016

EPA March 1, 2016 Update

January 11, 2016

EPA "Year in Review" January 2016 Update

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Copyright 2013 by Rock Road Industries, Inc.