The Bridgeton Landfill
We have made a series of improvements in recent months to dramatically reduce odors at the Bridgeton Landfill, and we continue to implement projects designed to both minimize odor and ensure safe and effective management of the landfill.
Since the beginning of 2013, the improvements we have made at the site include completing the installation of 40 new wells to assist with landfill-gas management, upgrades to the landfill’s systems for collecting and burning off odor-causing gases, improvements to the site leachate conveyance system (including a state of the art pre-treatment facility) and the installation of a large, durable cap that both contains odors and allows the improved gas-collection system to work more efficiently.
We apologize for any inconvenience caused by odors from the site, and are 100 percent committed to doing what is right for our community.
To date, our plan has dramatically reduced odors coming from the landfill, but our work is not yet complete. Here is the latest:
The Bridgeton Landfill is closed and no longer accepts trash. Deep inside the landfill, a heat-producing reaction is causing the trash around it to decompose at an accelerated rate, generating heat and creating higher levels of gas and odor.
To reduce the gas and odor, we have added 40 new gas wells to the 160 wells already onsite. These wells, completed a week ahead of schedule in early April 2013, remove gas and transport it to a newly-upgraded processing facility to destroy it and minimize odors.
Following the completion of additional wells in April 2013, we began the work of placing a large, durable cap over the entire South Quarry of the landfill, where the heat-generating reaction is occurring. This cap consists of two layers of High-Density Polyethylene with a layer of Ethylene Vinyl Alcohol (EVOH) in the middle. Installation of this cap, combined with other enhancements to the gas-management system has significantly reduced odors from the site.
In recent months, we also have installed two new flares and a blower for the purpose of improving the efficiency of the on-site systems for collecting and burning landfill gas.
After completing this series of upgrades to the South Quarry, we are now focused on proactively installing similar improvements in the adjacent North Quarry, should they ever be needed. We have agreed to install an additional 21 gas wells and to place an EVOH cap over the North Quarry.
Detailed air-sampling data obtained from the site’s perimeter indicates that there is no cause for public health concern as a result of the odors, or the site in general. The Missouri Department of Natural Resources (MDNR) has been conducting continuous air sampling at multiple locations around the landfill’s perimeter throughout 2013, testing for the presence of gases like hydrogen sulfide and sulfur dioxide, as well as for benzene, volatile organic chemicals, and gamma radiation. The Missouri Department of Health & Senior Services (DHSS) is further analyzing and summarizing these reports twice weekly, specifically to identify and report on any potential public-health concerns. These reports are publicly available through the Bridgeton Landfill website, as well as through the Missouri DHSS web site.
As a company whose subsidiaries manage 191 active and 128 closed landfills, we know what it takes to manage all of the byproducts of the decomposition of waste. We have successfully tackled problems similar to the Bridgeton Landfill before.
Thank you for your patience and understanding as we work to resolve this issue as efficiently and effectively as possible.