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Officials study if quake triggered blast at fuel site

Fire at Calif. facility kept thousands confined to homes

By OLGA R. RODRIGUEZ and JOCELYN GECKER, Associated Press
Published: October 16, 2019, 9:53pm
4 Photos
Damage from the fire is shown Wednesday at the NuStar Energy facility in Crockett, Calif.
Damage from the fire is shown Wednesday at the NuStar Energy facility in Crockett, Calif. (jeff chiu/Associated Press) Photo Gallery

SAN FRANCISCO — Officials were trying to determine Wednesday if a 4.5 magnitude earthquake triggered an explosion at a fuel storage facility in the San Francisco Bay Area that started a fire and kept thousands of people in their homes for hours because of potentially unhealthy air.

The earthquake struck about 15 miles southeast of the NuStar Energy fuel storage facility in Crockett 15 hours before the fire Tuesday that consumed thousands of gallons of ethanol, a gasoline additive.

Fire and company officials said the cause of the fire at the facility was still being investigated.

“We do not yet know if it is related to the earthquake,” said NuStar spokeswoman Mary Rose Brown.

Contra Costa County Fire Protection District spokesman Steve Hill said the earthquake was one of several possibilities investigators were considering but added that it was too early to say what caused the explosion.

“I think we dodged some bullets here in the last 24 hours,” Hill said, adding that the tanks were filled at 1 percent capacity, which still amounted to about 250,000 gallons of ethanol.

Video footage of Tuesday’s fire about 30 miles northeast of downtown San Francisco showed an explosion so strong that it blew the lid from one tank high into the air. The fire badly damaged or destroyed the two tanks, the remnants of which were still covered a day later with fire-fighting foam to prevent any rekindling.

Monday night’s 4.5 magnitude earthquake centered in Pleasant Hill was the strongest in the San Francisco Bay Area in several years and was felt across the region.

“We conducted an audio, visual and olfactory inspection after the earthquake,” NuStar spokeswoman Brown said in a statement. She said employees walked through the facility looking for damage or compromise in tanks, pipes, fittings and associated equipment. “There was no damage detected after the earthquake.”

The facility remained closed Wednesday as inspectors assessed the damage and came up with a plan for repairs, Brown said. Officials did not know when the plant would resume operations.

Brown also said inspectors tested Wednesday for “a multitude of potential contaminants and all were below detectable levels.” Monitoring will continue.

Aftershocks in the area were still being felt Wednesday, including one with a 3.4 magnitude.

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