Safely Extracting Underground Storage Tanks (USTs)
Underground storage tank (UST) removal is the process of safely extracting a tank that is buried underground, typically used for storing petroleum products or hazardous substances. The removal process involves several steps to ensure environmental safety and regulatory compliance. Typical removal process steps include:
Preliminary Site Assessment:
A thorough assessment of the UST and its surroundings is conducted to evaluate the conditions, potential risks, and regulatory requirements associated with the closure.
Tank Cleaning and Removal:
The UST is emptied of any remaining contents and thoroughly cleaned to remove residual substances. The tank is then excavated and removed from the ground, following appropriate safety protocols.
Soil and Groundwater Sampling:
Soil samples are collected from around the former tank location to determine if any contamination has occurred. Additionally, groundwater monitoring wells may be installed to assess the impact of the tank on groundwater quality.
Site Remediation:
If contamination is detected, remediation measures are implemented to clean up the affected soil and groundwater. This may involve soil excavation, soil vapor extraction, groundwater treatment, or other appropriate techniques to mitigate environmental risks.
Regulatory Compliance and Reporting:
Throughout the UST closure process, regulatory requirements must be followed, including notifying and obtaining approvals from relevant authorities. Detailed documentation and reporting are typically required to demonstrate compliance with applicable regulations.
Site Restoration:
Once the closure and remediation activities are completed, the site is restored to its original or an appropriate condition. This may involve backfilling excavated areas, regrading the site, and restoring vegetation.