What is the minimum depth of the backfill bed for a tank in a dry hole?

The minimum depth of the backfill bed for a tank in a dry hole is essential for providing stability and protection to the tank. A depth of 1 to 2 feet is considered adequate to ensure the tank is adequately supported and insulated from potential environmental impact. This depth allows for the proper drainage of any water that may accumulate while also providing enough soil coverage to protect the tank from mechanical damage and environmental factors.

Backfill material should be free of large rocks or debris that could cause punctures or compromise the integrity of the tank over time. Additionally, a depth within this range helps to create a stable environment for the tank, minimizing the risk of settling or displacement that could occur if the backfill is too shallow.

Choosing a backfill depth that falls outside this range, such as less than 1 foot or more than 2 feet, may not provide the necessary conditions for safe and effective tank operation. Thus, ensuring a backfill depth of 1 to 2 feet aligns with safety regulations and industry best practices for underground storage tank management.