Source Of Odor That Led To Shelter-In-Place Orders, Sent Several To Hospital Still Not Identified

SOLANO COUNTY, CA – Vallejo's hazardous materials team has not yet identified the source of an odor causing widespread concern since Tuesday night, but the shelter-in-place order was lifted as of 6:28 a.m. today, a city spokeswoman said.

Natural gas and refinery burn-off were ruled out as causes of the odor, Vallejo city spokeswoman Joanna Altman said.

At 11:14 p.m. Tuesday, Vallejo firefighters said the odor had been determined to originate outside of city limits.

The U.S. Coast Guard investigated the odor and a sheen was reportedly visible on the water by helicopter and boat, Coast Guard officials said.

The Coast Guard is scheduled to continue the investigation this morning. They were unable to locate a sheen, or confirm a connection between the reported sheen and the odor.

At 7:55 p.m., firefighters reported on social media that the strong odor had been reported in the Glen Cove and Beverly Hills Park neighborhoods.

"If you smell gas outside shelter in your home, close windows, turn off air units," firefighters said on Twitter.

By 10 p.m., more than 800 calls had been received by dispatch, Altman said. A number of residents reportedly went to the hospital.

Crews are using portable gas monitors, but have not picked up any abnormal readings, firefighters said.

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