Overview
HGL is executing a large-scale remedial action to clean up low-level radioactive waste (uranium, thorium, and radium) on numerous commercial, municipal, and residential properties in two separate areas of St. Louis. The dedicated team of over 60 on-site personnel perform radiological characterization and remediation efforts, which includes using two railcar loading areas. Since beginning the project, HGL has excavated and shipped nearly 64,000 cubic yards of impacted soil.
Project work is completed under CERCLA and is managed by USACE in accordance with the Clean Air Act, the Clean Water Act, the National Contingency Plan, the National Historic Preservation Act, and the Toxic Substances Control Act, as well as with Missouri Department of Natural Resource and Missouri Department of Transportation regulations. HGL has received interim CPARS ratings of “Exceptional” and “Very Good.”
| Project Highlights | |
|---|---|
| ✔ | Coordinate with property owners to safely remove radiologically affected soil and sediment. |
| ✔ | Excavate contaminated soil around utilities, buildings, parks, and commercial and residential properties, as well as within roadway rights-of-way, while minimizing impacts to local property owners. |
| ✔ | Apply the principles of MARSSIM to implement Final Status Surveys for site closure. |
| ✔ | Operate and treat over 1 million gallons of site-generated water each year for permitted discharge. |
| ✔ | Maintain staff on-call 24 hours per day, 7 days a week to both support local utility companies if underground repair work is required in contaminated areas and to support water management during storm events. |
| ✔ | Operate two material staging and loadout areas, which include stockpile management, railcar loading, inspection, and manifesting. |
