LUFT
The California State Waterboard regulates Leaking Underground Fuel Tank cleanup sites. Data is obtained from GeoTracker http://www.geotracker.waterboards.ca.gov/. A LUFT site is a undergoing cleanup due to an unauthorized release from an UST system. An underground storage tank system (UST) is a tank and any underground piping connected to the tank that has at least 10 percent of its combined volume underground. UST regulations apply only to underground tanks and piping storing either petroleum or certain hazardous substances.