What is the minimum burial depth for the piping system of an underground tank in traffic areas?

The minimum burial depth for the piping system of an underground tank in traffic areas is 18 inches. This requirement is in place to provide adequate protection for the piping against physical damage, particularly from the weight of vehicles and other surface activities.

The designated 18-inch depth helps to mitigate the risk of soil erosion and ensures that the pipes remain below the reach of typical surface disturbances, which could compromise their integrity. Compliance with this regulation is vital for preventing leaks and maintaining the overall safety and environmental standards associated with underground storage tanks. Ensuring that the piping is adequately buried also helps with thermal insulation, reducing the potential for issues related to temperature fluctuations that can affect the stored product.