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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.

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News and Updates

image of Machinists Hall in Bridgeton MODistrict 9 Machinists HallCommunity Listening Session on October 19 in Bridgeton, Mo.

EPA Region 7, the West Lake Landfill Community Advisory Group, and Just Moms STL invite you to a Community Listening Session on Thursday, Oct. 19, at the District 9 Machinists Hall. Senior Advisor to EPA Administrator Pruitt, Albert “Kell” Kelly, and new Acting EPA Regional Administrator Cathy Stepp will attend to hear site-related concerns directly from local citizens. Concurrently, EPA and its partner agencies will staff tables in an adjacent room where the public can meet with the various agency experts. Kelly and Stepp will join this Open House portion to meet personally with community members. See event flier for more information(1 pp, 540 K, 9/27/2017)

image of West Lake Update 10-16-17West Lake Update: West Lake Landfill Community Listening Session to Be Jointly Hosted by EPA, Community Advisory Group, and Just Moms STL; EPA Publishes Remedial Investigation Addendum and Final Feasibility Study Draft Documents (PDF)(2 pp, 942 K, 10/16/2017)

EPA Region 7, in collaboration with the Community Advisory Group (CAG) and Just Moms STL, will jointly host a Community Listening Session on October 19 at the District 9 Machinists Hall in Bridgeton, Mo. Senior Advisor to EPA Administrator Scott Pruitt, Albert “Kell” Kelly, and new Acting Regional Administrator Cathy Stepp will attend the Listening Session to hear site-related concerns directly from local citizens. Community members who wish to provide their testimonials during the meeting must register, in advance or on-site, and may do so... more

image of West Lake Draft SW monitoring plan - 9-6-17Draft Stormwater Monitoring Plan, West Lake Landfill Operable Unit 1 (PDF)(9 pp, 3.52 MB, 9/6/2017)

On behalf of Cotter Corporation (N.S.L.), Bridgeton Landfill, LLC, Rock Road Industries, Inc. (collectively, the OU-1 Respondents) and the United States Department of Energy (the Federal Respondent), Engineering Management Support Inc. (EMSI) submits this draft Stormwater Monitoring Plan (the Plan), which describes stormwater sampling and analysis at Operable Unit-1 (OU-1) of the West Lake Landfill. Per EPA’s letter of December 12, 2016, this Plan addresses... more

EPA Comment Letter Regarding Review of Draft Stormwater Monitoring Plan (PDF)(42 pp, 2.99 MB, 10/3/2017)

image of revised draft Remedial Investigation Addendum 6-16-17Revised Draft Remedial Investigation Addendum (RIA) Report, West Lake Landfill Operable Unit 1(6/16/2017)

This revised draft RI Addendum is being submitted in accordance with the EPA’s Dec. 9, 2015 Statement of Work for Remedial Investigation/Final Feasibility Study, as further set forth in the approved Abbreviated Work Plan for Remedial Investigation Addendum and Final Feasibility Study for West Lake Landfill Operable Unit 1, dated May 6, 2016 (final revision). This revised draft RI Addendum also addresses comments received from EPA... more

EPA Comment Letter Regarding Review of Revised Draft RIA Report (PDF)(39 pp, 2.93 MB, 8/25/2017)

image of Draft final feasibility study 1-4-17Draft Final Feasibility Study, West Lake Landfill Operable Unit 1(1/4/2017)

This Final Feasibility Study (FFS) for Operable Unit 1 (OU-1) of the West Lake Landfill (the Site) was prepared at the direction of EPA to present further evaluations of potential remedial alternatives to address the presence of radiologically impacted materials (RIM) contained within portions of some of the landfill units at the Site. This FFS was prepared in accordance with the requirements of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)... more

EPA Comment Letter Regarding Review of Draft Final Feasibility Study (PDF)(52 pp, 3.02 MB, 6/23/2017)

Response to EPA Comment Letter Regarding Review of Draft Final Feasibility Study (PDF)(56 pp, 1.1 MB, 9/1/2017)

image of Draft RIA Report 7-29-16Draft Remedial Investigation Addendum (RIA) Report, West Lake Landfill Operable Unit 1(7/29/2016)

This RI Addendum (RIA) addresses the requirements established by EPA in the Dec. 9, 2015 Statement of Work for Remedial Investigation/Final Feasibility Study, and as further set forth in the approved Abbreviated Work Plan for Remedial Investigation Addendum and Final Feasibility Study for West Lake Landfill Operable Unit 1, dated May 6, 2016 ... more

EPA Comment Letter Regarding Review of Draft RIA Report (PDF)(42 pp, 2.46 MB, 3/14/2017)

EPA Comment Letter Regarding Review of Supporting Documentation for Draft RIA Report (PDF)(44 pp, 2.72 MB, 4/25/2017)

Response to EPA Comment Letter Regarding Review of Draft RIA Report (PDF)(78 pp, 1.14 MB, 8/13/2017)

image of West Lake SW runoff news release 8-31-17News Release: No Off-Site Public Health Risks from Stormwater Runoff at West Lake Landfill(8/31/2017)

EPA announced today that no off-site, unacceptable public health risks exist from radiological contaminants in stormwater runoff at the West Lake Landfill in Bridgeton, Mo. The conclusion comes after nearly a year of sampling that was conducted during and after rain events by the potentially responsible parties (PRPs) at EPA’s direction. Laboratory analyses were conducted by the same independent lab used by the Missouri Department of Natural Resources for their recent stormwater testing. EPA concluded the stormwater runoff from the landfill has been below risk-based screening levels. more

image of West Lake Update 8-30-17West Lake Update: EPA and State Actions Reduce Landfill Odors and Complaints; EPA, MDNR, and Potentially Responsible Party Air Monitoring; Air Monitoring Results (PDF)(2 pp, 618 K, 8/30/2017)

In this edition of West Lake Update, we will bring you up to date on federal and state efforts to monitor air quality and Clean Air Act compliance efforts around the Bridgeton area. As you may remember, in late 2016, we wrote extensively on the subject in a three-part series you can find online. more

image of West Lake stormwater and sediment fact sheet Aug 2017Fact Sheet: Stormwater and Sediment Update, West Lake Landfill Superfund Site, Bridgeton, Missouri, August 2017

INTRODUCTION: In 2016, EPA directed the Potentially Responsible Parties (PRPs) at the West Lake Landfill to conduct stormwater sampling during and following rain events. These samples were collected by the PRPs, pursuant to enforceable administrative orders issued by EPA and analyzed for both landfill contaminants and radioactive particles. Additionally, the PRPs, EPA, and the Missouri Department of Natural Resources have each collected and analyzed numerous sediment samples from locations near the perimeter of the site. Based on these sampling efforts, EPA has concluded that stormwater runoff from the landfill is below site-specific, human health risk-based preliminary remediation goal (PRG) screening levels at the boundary of the site. more

image of West Lake groundwater fact sheet Aug 2017Fact Sheet: Groundwater Operable Unit 3, West Lake Landfill Superfund Site, Bridgeton, Missouri, August 2017

INTRODUCTION: Operable Unit 3 (OU-3) addresses site-wide groundwater at the West Lake Landfill Superfund Site, which is located in Bridgeton, Mo. The site consists of several inactive landfills, including the West Lake Landfill and the Bridgeton Landfill. The site is on the National Priorities List under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980. The other Operable Units at the site are Operable Unit 1 (OU-1) to address radiologically-impacted material (RIM), and Operable Unit 2 (OU-2) to address non-radiological waste materials. more

image of West Lake Update Aug 9, 2017West Lake Update: Progress on Proposed Remedy Decision, and North Quarry Update (PDF)(2 pp, 1.16 MB, 8/9/2017)

The West Lake Landfill Superfund Site is one of EPA’s top priorities in the entire country. The new administration has made a concerted effort to restore Superfund to its rightful place at the center of EPA’s core mission. The West Lake Landfill team remains singularly focused on identifying and proposing a final, permanent remedy that will protect the citizens of Bridgeton and the surrounding communities. more

image of West Lake Fact Sheet-Spanish Village Sampling June 2017Fact Sheet: EPA Sampling Determines No Manhattan Project Waste Found in Spanish Village Homes, Spanish Village Subdivision, Bridgeton, Missouri, June 2017

RESULTS: The results of EPA's residential sampling in the Spanish Village neighborhood of Bridgeton, conducted the week of Dec. 26, 2016, show no Manhattan Project waste was found and no further action under CERCLA is warranted where the sampling was conducted. EPA decided to conduct the sampling late in 2016 after hearing community health concerns about a private lawsuit. more

image of West Lake Fact Sheet-Site Update June 2017Fact Sheet: Site Update, West Lake Landfill Superfund Site, Bridgeton, Missouri, June 2017

NO OFF-SITE HEALTH RISKS: Based on current data, there are no off-site health risks for those living and working around the West Lake Landfill Superfund Site in Bridgeton, Mo. This data includes sampling two homes in the Spanish Village neighborhood, the Bridgeton Municipal Athletic Complex investigation, EPA’s year-long air monitoring effort, and the current air monitoring efforts conducted by the Potentially Responsible Parties (PRPs). more

image of West Lake General Facts June 2017 web pageWest Lake Landfill - General Facts, June 2017

OVERVIEW: Nearing completion of our final proposed remedy decision - EPA is focused on reaching a final remedy decision that is compliant with the law, based on sound science, and considers the state’s position and key concerns in accordance with the National Contingency Plan.  EPA will continue to hold the Potentially Responsible Parties (PRPs) accountable for meeting deadlines as the Agency works toward selecting the final proposed remedy. more

image of West Lake Update, April 11, 2017West Lake Landfill Site Progress Update (PDF)(4 pp, 1.89 MB, 4/11/2017)

This edition of the West Lake Update provides an update on the major site activities associated with the West Lake Landfill. 2016 was a year of progress at the West Lake Landfill Superfund Site in Bridgeton, Mo., with more work underway for 2017. Across the site and around the community, EPA completed or oversaw a number of actions. more

image of West Lake Update, Dec. 8, 2016EPA Responds to Homeowner Concerns; Provides Information About Lead-210; Releases Final Radon Report (PDF)(2 pp, 919 K, 12/8/2016)

EPA has announced that it is developing a focused residential sampling plan in Bridgeton, Mo., following alleged contamination in a Spanish Village home. This is part of an ongoing comprehensive... more 

image of West Lake progress update news release - Nov. 22, 2016Progress Update: EPA Developing Focused Residential Sampling Plan, Provides Update for Proposing Remedy at West Lake Landfill(11/22/2016)

EPA announced today that it is developing a focused residential sampling plan in Bridgeton, Mo., following alleged contamination in a Spanish Village home. This is part of an ongoing comprehensive... more

image of West Lake letter to Lewis and DeFeo regarding data request Nov. 17, 2016EPA Letter to Richard S. Lewis of Hausfeld, LLP, and Daniel T. DeFeo of DeFeo & Kolker, LLC, Regarding Request for Data (PDF)(2 pp, 1.32 MB, 11/17/2016)

On Nov. 15, 2016, EPA was provided a copy of a Petition filed by you on behalf of your clients, Michael and Robbin Dailey. This Petition contains certain allegations regarding radioactive contamination at... more

image of West Lake letter re: review of EVOH cover system workplan Nov. 4, 2016.pngEPA Letter Regarding EPA Review of Ethylene Vinyl Alcohol (EVOH) Cover System Work Plan (PDF)(1 pg, 74 K, 11/4/2016)

The U.S. Environmental Protection Agency has reviewed the above-referenced document that was prepared by the Cornerstone Environmental Group, LLC. This work plan was submitted to the EPA for review and approval... more

image of West Lake letter approving extension of time request to revise IGI & TMP workplans Nov, 4, 2016.pngEPA Letter Approving Request for Extension of Time to Revise IGI and TMP Work Plans (PDF)(1 pg, 94 K, 11/4/2016)

The U.S. Environmental Protection Agency has received your extension request in order to complete revisions to the Inert Gas Injection (IGI) and Temperature Monitoring Probe (TMP) Work Plans. The extension request, dated November 1, 2016... more

image of West Lake Update, October 27, 2016Air Monitoring Continues in Bridgeton - Part 3 of 3: MDNR Air Monitoring (PDF)(2 pp, 832 K, 10/27/2016)

This is the third installment of a three-part series regarding air quality in the areas surrounding the Bridgeton and West Lake Landfills. Since 2013, both EPA and the Missouri Department of Natural Resources (MDNR) have conducted... more

image of West Lake Update, October 26, 2016Air Monitoring Continues in Bridgeton - Part 2 of 3: EPA Air Monitoring (PDF)(2 pp, 1.69 MB, 10/26/2016)

This is the second installment of a multi-part series of the West Lake Update regarding air quality and air monitoring at the West Lake and Bridgeton Landfills and the surrounding area. Since 2013, both EPA and... more

image of West Lake Update, October 25, 2016Air Monitoring Continues in Bridgeton - Part 1 of 3: Clean Air Act Compliance (PDF)(2 pp, 6.55 MB, 10/25/2016)

This is the first of a three-part series of the West Lake Update that will look at federal and state responsibilities and review some of the major air monitoring and Clean Air Act compliance efforts around the Bridgeton area. more

image of West Lake letter response to 10-19-16 cmts on EVOH cover system workplan Oct. 20, 2016.pngLetter to EPA Regarding Response to 10/19/16 Comments for EVOH Cover System Work Plan (PDF)(128 pp, 19 MB, 10/20/2016)

On behalf of our client, Bridgeton Landfill, LLC (hereafter Bridgeton Landfill), Cornerstone Environmental Group, LLC hereby submits a revised version of the EVOH Cover System Work Plan, North Quarry, Bridgeton Landfill, incorporating the... more

image of West Lake Sediment Sampling page mapAdditional Sediment Sampling Results(9/7/2016)

The U.S. Environmental Protection Agency (EPA) has released the results from the sediment sampling effort June 10, 2016, at the West Lake Landfill. The sediment sampling results did not indicate radiologically impacted material (RIM) at any location, with all results below the definition of RIM... more

image of West Lake SO2 news release - Aug. 31, 2016New Sulfur Dioxide Air Monitors Operational at Bridgeton Landfill(8/31/2016)

In April, EPA reached an agreement with Bridgeton Landfill, LLC, to install and operate two sulfur dioxide ambient air monitors near the Bridgeton Landfill. The agreement requires... more

Air monitoring data (see 9/1 item) Exit

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... 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)... 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