The Coast Guard says an oil tanker has removed a load of oil and water from a terminal in the path of mud slides from Redoubt volcano.

The agency says the potential threat posed by stored oil at the Drift River Oil Terminal has been reduced 93 percent.

The Chevron-flagged tanker Mississippi Voyager departed for a refinery in Hawaii on Thursday.

The terminal will be monitored at least weekly until activity at Redoubt subsides.

Eruptions in March sent ash clouds into the atmosphere, threatening aircraft, and created mud slides.

The Drift River Terminal is about 22 miles from the 10,200-foot mountain.

The Mississippi Voyager is the second tanker to dock there since Redoubt began erupting March 22.

Though the volcano hasn't exploded since April 4. It remains in an eruption phase and could deliver a blast at any time, scientists say. That poses a threat for the Drift River terminal, owned by Cook Inlet Pipe Line Co., a Chevron-operated company.

An explosion risks melting the glaciers that feed into Drift River, flooding it with ice, water and mud and threatening the terminal.

Two such floods, known by the Indonesian word "lahar," have gushed down the river since March, but a dike built in 1990 protected the terminal's tanks. The airstrip at the facility, which lies outside the dike, was flooded.