1305.13.1 Below ground.
MC § 1305.13.1
Tanks located below ground, inside or outside of buildings, shall comply with the following requirements: 1. Containment. Fuel-oil tanks having a capacity of more than 660 gallons (2498.4 L) shall be provided with secondary containment intended to prevent any leakage of fuel oil from the tank from entering the environment. The capacity of the containment shall equal or exceed the capacity of the tank served.
2.Burial. Regardless of capacity, fuel-oil tanks shall be buried with the top of the tank at least 2 feet (609.6 mm) below ground. Tanks shall be placed in firm soil and shall be surrounded by clean sand or well-tamped earth, free from ashes or other corrosive substance, and free from stones that will not pass a 1-inch (25.4 mm) mesh.
3.Anchorage. When necessary to prevent floating, fuel-oil tanks, regardless of capacity, shall be securely anchored.
4.Distance to foundations. Regardless of capacity, no fuel-oil tank shall be buried within 3 feet (914.4 mm) of any foundation wall or footing.
5.Special limitations near subways. Regardless of capacity, no fuel-oil tank shall be placed within 20 feet (6096 mm) of the outside line of a subway wall. For the purpose of the foregoing requirement, a subway shall be deemed to include any subsurface railroad or rapid transit roadbed.
