Underground storage tanks (known as USTs) are typically constructed of Steel, Aluminum, Fiberglass or a combination of materials. They may be either single-wall or double-wall construction.
- Uses include potable water, wastewater, fire protection, stormwater, petroleum products, chemical storage, and other waste.
- Tanks are most commonly constructed of concrete, plastic, or fiberglass.
- Concrete USTs may be poured-in-place or the design may utilize pre-fabricated walls. Sizes can easily reach a million gallons of capacity.
- Plastic and fiberglass USTs are commonly round, oval, square, or oblong and generally available up to 50,000 gallons.