Ventura County Fire Dept. Hazardous Incident Response Team - Ventura County, California

From the Ventura County Fire Dept. HAZMAT webpage:
The hazmat (hazardous materials) unit responds on incidents involving hazardous chemical, radiological, biological, explosive or unknown materials. At the front of the trailer is a workstation with reference materials and computers that can be used to identify materials and command the hazmat aspect of operations while on the scene of an emergency.

Also in the trailer is a small laboratory area used in identifying materials. The unit carries protective suits and a variety of tools and materials used to monitor the incident, collect and identify materials and perform decontamination operations. On large incidents, hazmat teams from adjoining departments will work together for a regional response.

Staffing: The hazmat unit is staffed by the 3-person, trained and certified in hazardous materials, engine crew. Additional trained and certified personnel are called in as needed. All members of the department receive basic instruction on hazardous materials incidents.