Simi Valley, CA – The Ventura County Fire Department (VCFD) responded to a hazardous materials chemical fire in the Simi Valley industrial area, Tuesday, around 6:16 am, located off the 100-block of W Cochran Street.
According to the VCFD, several 75-gallon drums containing nitric acid were burning inside a building.
The fire has been contained and controlled.
Authorities said the majority of the fire was on the outside of the building, but the inside of the business was also impacted, triggering sprinklers.
Some residents in the surrounding area received a VC Alert to shelter inside their home and close all windows and doors.
Shelter-in-place orders have been subsequently lifted as of 12 pm and roads are expected to be open.
Plumes of smoke could be seen rising several hundred feet into the air. One witness described symptoms of burning, coughing, dry heaving, nausea, headache, and tightness in the chest.
A hazmat team left the building around noon.
The cause of the incident is being investigated.