Any storage container of at least 55 gallons that is completely aboveground, partially buried (<10%), or located in a bunker or subterranean vault is considered an aboveground storage tank, or AST. The majority of storage tanks hold petroleum products, so ASTs pose a significant threat to the environment. To prevent leaks, ASTs are regulated by the Spill Prevention, Control, and Countermeasures (SPCC) rule. This course will summarize the SPCC regulations that apply to aboveground storage tanks.
