AMEREN contracted 06 ENV to provide project management, field resources, and equipment for the Excavation, Transportation, and Disposal of Impacted Soils at the Former Manufactured Gas Plant in Belleville, Illinois.
O6 ENV completed the demolition and removal of Washington Avenue. The road was demolished, sized, and disposed of at an approved landfill. Additionally, 12,000 cubic yards of soil impacted with coal tar from previous plant activities were also excavated during the remediation phase. The source of the coal tar contamination was discovered to have originated from the underground gas holder that remained in place from when the former manufactured gas plant was in operation. Due to the proximity of active public streets and utilities, the excavation work was performed inside of an Earth Retention System (ERS) consisting of driven steel sheet piling and tiebacks.
The impacted soil was excavated with a pair of hydraulic excavators and loaded onto end dump trailers and transported under manifest for disposal at a Subtitle D landfill. The impacted soil was manifested as NON-RCRA Regulated Waste under 40 CFR Section 262.34(a) which provides an RCRA exemption for certain wastes generated from former manufactured gas plant activities.
Due to a high groundwater table, O6 ENV utilized a dewatering system to support deep excavation within the ERS. Approximately, 300,000 gallons of MGP-impacted groundwater were pumped and filtered through an onsite Wastewater Treatment Plant consisting of an oil-water separator, solidification bag filters, and carbon and resin vessels. The treated water was analyzed prior to release to the local POTW.
The excavations were backfilled using soil and virgin gravel from an off-site borrow source. The borrowed material mater was transported by tandem trucks, placed in lifts by a dozer, and compacted to specifications. Topsoil was placed to match the original grade and the area was restored with seed and straw.
O6 Environmental’s remediation service designs, builds, leases, and services a wide range of environmental remediation solutions that can help companies achieve the land and water quality goals of their sites. Environmental remediation solutions help contain, treat, and oversee the disposal of those contaminants, while mitigating the environmental risk to the soil and groundwater of farms and ranches. Environmental remediation refers to removing contaminants from the soil, groundwater, surface water, sediments, and other natural materials oftentimes through excavation or demolition. The remediation process usually involves site evaluation of soil and water, and determining the degree of contamination. O6 Environmental’s field services have extensive experience with environmental remediation projects.
During the course of the cleanup, pollution and contaminants are removed from a contaminated site’s soil, groundwater, sediment, or surface waters to ensure that they are not adversely impacting human health or the environment. Environmental remediation solutions are used to mitigate environmental damage, such as pollution and other contamination, and to improve a site’s environmental conditions. Remediation refers to the process of undoing or stopping environmental damage. When soils and other media become contaminated, reclamation is necessary to remove hazardous waste and restore an area to a pre-existing condition.
Using a soil remediation system such as soil vapor extraction or groundwater remediation system, the firm working on heavy loads of chemical pollutants or another environmental contaminant is able to mitigate the environmental damage. The environmental remediation services will be completed with specialized expertise from a first-rate environmental remediation solutions company, whether you are looking for a project to store chemicals or fuel oil, inspect the groundwater or soil, or conduct an exhaustive site evaluation. To ensure you perform the remediation properly while meeting any relevant regulatory requirements, it is essential to work with an advisor that is a specialist in environmental remediation solutions. The professional that you hire will perform a phased process, including an examination of the site, testing, analyzing results, determining appropriate remedies, and setting up these strategies.
After completing a site evaluation, the environmental remediation experts at O6 Environmental will develop an environmental remediation plan, taking into account Environmental Protection Agency (EPA) standards, community regulations, public health, and workers’ safety. O6 Environmental supports the environmental consulting and design firms contracting with governments and industries for large-scale, multi-site, and complex environmental cleanup projects requiring an environmental contractor with extensive cleanup experience, heavy equipment, financial stability, and commitment to health, safety, and the environment. We provide various environmental services, including remediation, design, and construction.
O6 Environmental services include compliance with regulatory agencies, program management solutions, and environmental services in the air, water, and soil remediation. We provide remediation services and remediation technologies related to construction, including remedial action to clean up contaminated sites and integrated systems to reclaim resources. We have developed a proven remediation system to treat soil contamination, water, and air. Call us for an environmental site assessment so we can help with your environmental remediation project.
Rooted in the process of emergency spill clean-up, O6 Environmental Services has managed remediation at many sites polluted with oil, fuel, solvents, hazardous material, and other emerging contaminants through projects that vary in size, scope, cost, and duration. O6 Environmental’s integrated environmental services teams focus on an economically sound environmental remediation process, which leads to timely, efficient cleanup solutions that will long-term benefit the environment and the local community.
Coal ash ponds, also known as coal ash impoundments or settling basins, are large pits used to store coal combustion residuals (CCR) generated by coal fired power plants. These impoundments are often located near water sources, which can result in groundwater contamination if the impoundments are not properly managed. To address this issue, remediation of coal ash ponds has become a significant concern for both industry and regulatory agencies. O6 can provide your site with coal ash pond remediation and any other environmental services you need.
Remediation of coal ash waste can involve a variety of techniques, including retrofitting, mechanical dredging, de-watering, solidification, and closure. Retrofitting is the process of modifying existing coal ash impoundments to improve performance, prevent future leaks, and mitigate coal ash pollution. This may involve adding additional liners, drainage systems, or other measures to enhance the impoundment’s ability to contain CCR.
Mechanical dredging involves removing the accumulated CCR from the bottom of the surface impoundment using specialized equipment. This process can be time-consuming and expensive, but it is often necessary to remove the most contaminated material from the impoundment. De-watering is the process of removing water from the impoundment, which can make it easier to remove the CCR. Solidification involves mixing the CCR with a stabilizing agent, such as cement, to create a solid material that is less likely to leach contaminants.
Closure of coal ash ponds can be achieved through several methods, including capping and excavation. Capping involves covering the surface impoundment with an impermeable barrier, such as a synthetic liner or a layer of soil, to prevent water from entering the impoundment and leaching contaminants. Excavation involves removing the impoundment entirely and transporting the CCR to a new storage facility or lined landfill to prevent groundwater contamination.
Coal ash cleanup is a complex process that requires careful planning and execution. It is essential to develop a detailed site-specific plan that takes into account factors such as the size and location of the impoundment, the type and amount of CCR, and the potential impact on the surrounding environment. Remediation activities must also comply with local, state, and federal regulations to ensure that the project is completed safely and effectively.
Remediation of coal ash ponds is an important issue for both industry and regulatory agencies. The use of coal fired power plants is declining, but the legacy of CCR generated by these facilities will continue to pose a challenge for many years to come. The implementation of effective remediation strategies, including retrofitting, mechanical dredging, de-watering, solidification, and closure, can help to mitigate the environmental and health risks associated with coal ash ponds. By working together, industry and regulatory agencies can develop and implement solutions that protect public health and the environment. Contact O6 Environmental today to learn more about your options for coal ash pond remediation.