What does the acronym "UST" stand for?

The acronym "UST" stands for "Underground Storage Tank." This terminology is widely used in environmental regulation and industry to refer specifically to storage tanks that are located underground and are designed to hold hazardous substances, especially petroleum products. These tanks are subject to various regulations due to the potential risks they pose to human health and the environment if they leak or are improperly maintained. This specific definition is critical for professionals in the field of environmental management, as it highlights the importance of monitoring and managing underground storage tanks to prevent contamination of soil and groundwater. Understanding the correct terminology is foundational knowledge for anyone working with UST regulations and compliance.