VIDEO: Shelter in place lifted after mysterious odor sickens residents in Vallejo

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VALLEJO (KRON) — Authorities are still trying to determine the cause of a mysterious, gas-like smell that prompted a shelter in place and sent residents to the hospital in Vallejo Tuesday night.

The shelter in place was lifted at 6 a.m. Wednesday morning.

Ferry service out of Vallejo was shut down for hours Wednesday morning due to sheen found in the water. It is unknown is the sheen is connected to the smell. Normal Ferry service was restored by 8 a.m.

The source of the gas-like odor causing widespread concern in Vallejo Tuesday night has been determined to be coming from outside city limits but the exact cause is still unknown, Vallejo Fire Department officials said.

The strong odor could be smelled in the Glen Cove and Beverly Hills Park neighborhoods, according to the Vallejo Fire Department. People in neighboring towns also reported the small.

Officials say they were flooded with calls about the smell starting at around 7:55 p.m.

“The Emergency Operation Center has been partially activated due to an unknown odor with the majority of reports coming from South Vallejo. The City’s Hazmat Team has been activated. No natural gas has been detected and the source of the odor is unknown,” the city of Vallejo said in a press release.

Crews are using portable gas monitors, but have not picked up any abnormal readings, firefighters said. They have, however, determined that the odor is not natural gas or burn-off from a refinery.

Multiple people have been taken to the hospital as a result of the odor.

PG&E is also investigating the smell.

The Coast Guard confirms that they are investigating a “sheen in or around the water” near the US Coast Guard Station Vallejo, located at 2 Harbor Way in Vallejo. This was initially reported by a ferry. This may or may not be connected to the odor.

The fire department says it has received over 500 calls about the odor by 8:02 p.m.

If residents smell the gas outside of the shelter, they are encouraged to close the windows and turn off all air units.

The source of the odor is unknown at this time.

“At this time all we know is that there is a strong odor throughout south Vallejo,” firefighters said in a tweet. “It has not been determined to be natural gas, refinery burnoff, or otherwise. Fire and PG&E crews have been utilizing portable 4gas monitors throughout the area and have not picked up any abnormal readings. We will continue to investigate until a determination is made.”

Benicia police said the odor of the gas is being blown into the city by a southwest wind from the Glen Cove area.

There is no shelter in place in Benicia, police said.

Viewers have been calling in from as far north at the Blue Rock Springs Golf Club, down to Cal Maritime and Benicia, and west to Mare Island

Stay with KRON4 for updates.

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