GAS TANK BURIAL
Advantages of Gas Tank Burial
Aside from the obvious reason that underground storage tanks (USTs) are easier on the eyes, you may also choose to have your gas tank buried because USTs are usually less susceptible to fire or explosion, and they may have less complicated venting requirements than aboveground tanks. USTs are also used when on-site fuel blending is needed, which can help to conserve fossil fuels and reduce gas emissions.
Gas tanks are usually buried deep enough that the top of the tank is no less than about 20 inches beneath the surface of the soil, but an access panel will still be visible above ground. This small panel is used for filling the gas tank, inspections, and general maintenance. Newer tanks are also coated to prevent damage from rust or plants that can compromise the tank, resulting in gas contaminating the ground.