If subject to vehicle traffic, how much earth must cover underground storage tanks?

Underground storage tanks (USTs) are subject to specific regulations depending on their environment and the potential risks involved. When USTs are located in areas that may experience vehicle traffic, it is crucial to ensure that they are adequately protected from physical damage that could result from such traffic.

The appropriate depth of earth cover over USTs is determined by the need to provide this protection, and a cover of at least 3 feet is generally specified for locations subject to vehicle traffic. This depth helps reduce the risk of impacts from vehicles and provides sufficient cushioning against the forces that can be exerted by the weight of the vehicles and any associated activities on the surface.

Having 3 feet of earth cover ensures that the tanks are not only protected from direct contact but also helps to prevent any potential damage that could lead to leaks or spills, thereby safeguarding the surrounding environment from contamination. In addition to physical protection, this depth also contributes to thermal insulation, further enhancing the longevity and safety of the tanks.

Other depths, such as 1 foot, 2 feet, or 4 feet, may not provide the optimal balance of protection versus practicality needed for locations with vehicle traffic. A 1-foot cover may be insufficient for protection, while 2 feet still may