Source: https://www.greatamericaninsurancegroup.com/

During a routine tank tightness test at an airport hangar, it was discovered that some fuel leaked from an underground storage tank. It was determined that the seal in a coupling device that connected the tank to the piping had failed, and gasoline was leaking out of the pipe connection. Upon inspection, it was found that the gasoline had leaked into the soil. The airport was held liable for the clean-up costs resulting from the underground storage tank. Read more.