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Underground Storage Tank Removal

Updated: Aug 29

The captured image provides a visual insight into an executed confined space entry procedure, meticulously set in motion with a paramount objective: the thorough cleansing of the interior of a substantial 4,000-gallon steel underground storage tank (UST) housing diesel fuel. This intricate operation stands as a testament to the commitment to environmental preservation and safety.

At the center of this undertaking stands a field technician, clad in a vibrant yellow Tyvek suit. The attire signifies not only the adherence to safety protocols but also the awareness of the hazardous nature of the task at hand. Ensuring utmost protection, the technician is equipped with an oxygen mask, a testament to the meticulous planning and precautions woven into the procedure prior to the UST entry.

To facilitate the confined space entry with precision, a sturdy tripod stand was strategically erected. This purposeful inclusion streamlined the entry process into the underground storage tank, optimizing safety and operational efficiency. As the field technician entered the confined space to undertake the cleaning process, those positioned above ground assumed a role of vigilant guardianship. Their watchful eyes were intently focused on the task, unwaveringly dedicated to ensuring the well-being and security of the technician below.

The outcome of this complex endeavor was truly commendable. The underground storage tank, once a repository of diesel fuel and potentially hazardous contaminants, underwent meticulous cleaning, a feat performed under challenging circumstances to maintain environmental integrity. With the meticulous execution of the cleanup within the tank's confines, a significant step was taken toward environmental preservation and protection. Subsequently, the culmination of efforts saw the successful removal of the UST from its location. The tank, now purged of its contents and cleaned, embarked on a new phase of its life cycle. It was conscientiously transported and disposed of at a metal recycling facility, ensuring its responsible and sustainable fate.

This entire operation exemplifies the synergy between meticulous planning, unwavering commitment to safety, and the pursuit of environmental well-being. It underscores the significance of adhering to stringent procedures, not only for the benefit of the environment but also for the protection of the dedicated professionals who undertake such vital tasks.



The view above shows the initial layout of four-inch diameter PVC pipes for a sub-slab depressurization system (SSDS) at an e-designated site in New York City. The pipes are laid beneath a proposed eight-story residential building. SSDS are recommended for sites with soil vapor issues. The system is intended to mitigate soil vapors that could emanate beneath a Site.

For this Site, an active SSDS was recommended due to elevated levels of perchloroethylene (PERC - Tetrachloroethylene) that was detected in post excavation soil vapor samples. The

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