Contra Costa Health monitors air quality as community reports strange smells near Martinez Refining Company

Martinez, California – County health officials are responding to reports of unusual odors near a major refinery in Contra Costa County, prompting an on-site investigation and air monitoring as a precaution for nearby communities.

According to Contra Costa Health, its Hazardous Materials Program response team has been dispatched to the area surrounding the Martinez Refining Company after residents reported strange smells in the community. The complaints triggered a response aimed at determining whether the odors pose any risk to public health.

Community Warning System alert issued

Health officials said the refinery reported a Community Warning System Level 1 incident at 10:53 a.m., which was connected to flaring activity at the facility. A Level 1 notification is typically issued when people in the area may hear, smell, or see signs of an event, but where no action is required for most residents.

As of approximately 2:45 p.m., officials confirmed that the Level 1 notice remained the most recent update on the Community Warning System, with no new details released about what may be occurring at the refinery. Authorities stressed that investigations like this can take time, especially when air quality monitoring is involved.

County health officials emphasized that a Level 1 alert does not automatically mean there is a leak or dangerous release. In many cases, flaring can cause temporary odors without creating a broader safety issue. Still, Contra Costa Health said its hazmat team is actively investigating and monitoring air conditions, indicating that crews are currently on the ground gathering data.

Officials said additional information will be shared with the public as it becomes available. Residents in the area are encouraged to stay informed through official county updates but were not advised to take protective action at this time.

Health leaders reiterated that the response is precautionary and meant to ensure transparency and public safety whenever refinery activity leads to community concerns.