Underground storage tanks must be covered with how much earth if not subject to vehicle traffic?

Underground storage tanks that are not subject to vehicle traffic must be covered with a minimum of 2 feet of earth. This requirement is in place to provide adequate protection for the tank itself, ensuring that it is shielded from environmental factors such as temperature fluctuations and physical damage from objects above ground. The coverage also helps in minimizing the risk of accidental damage or leaks, which can have significant environmental repercussions.

The 2-foot requirement balances sufficient coverage to provide both structural support and safety, while also recognizing that excessive earth coverage may not be necessary for tanks not exposed to heavy traffic or loading. This standard aligns with various safety regulations to ensure that the infrastructure remains secure while striving to mitigate risks associated with underground storage systems.