The cleanup continues at an Apple Valley storage facility where an estimated 63,000 gallons of gasoline leaked from a pipe in mid-February.
The city of Apple Valley has shut down four municipal wells near the Magellan tank farm as a precaution. The Minnesota Department of Health will be testing the wells to make sure they are not contaminated.
"No one expects that any gas has gotten anywhere into the municipal water supply," City Administrator Tom Lawell said.
Removing the wells from service hasn't affected the city water supply because demand is low this time of year, he said.
The leak at the privately owned tank farm near County Road 42 and Flagstaff Avenue was discovered Feb. 14.
The spill was contained by the earthen berm around the tank, so the cleanup has focused on fuel that seeped into the soil.
The Minnesota Pollution Control Agency estimated that about 58,000 gallons is still in the ground, as deep as 40 feet below the surface. The groundwater supply begins at about 70 feet; the nearest city well is 500 feet deep.
Magellan will install special wells to draw the gas from the ground.
