Well, obviously, thieves have figured out a way to tap the gas in the underground tanks and the lack of fittings and complex electronics that can only be soldered by Greek elephants did not deter them.

http://www.abcactionnews.com/dpp/news/region_hillsborough/thieves-using-crazy-contraptions-to-steal-hundreds-of-gallons-of-fuel-from-underground-tanks

Just google..lots of stories...I should have been smart enough to google this, but then so should some of the gas station people, who actually probably knew this was happening. Now, some gas would be contaminated by seawater, but some probably wasn't.