RICHMOND, Calif. -- A nasty smell had some residents in the East Bay concerned Tuesday night.
The Chevron refinery in Richmond conducted flaring Tuesday night, releasing hydrogen sulfite. That gives off a smell similar to rotten eggs.
Chevron says the flaring is a safety measure to relieve pressure during the refining process. County crews determined there was no public safety hazard.
Visible flaring at Chevron refinery in Richmond

This image shows the Chevron refinery in Richmond, Calif. Tuesday, March 29, 2016 as it conducted flaring. (KGO-TV)