Incident Name: Acorn Incident
Date Reported: 01/09/2026Time Reported: 1658
Incident Location: 5961 Acorn Street, Riverside, CA 92504
Ward #: Ward 3 Robillard
Type of Incident: Hazardous Materials
Incident Number: RIV #26-0001155
Control Time: 01/09/2026 at 1904 Hours
Fatalities:
Critical:
Moderate:
Minor:
Non Injury:
Displaced Persons: 0
Loss:
/* */
Cause:
Evacuations: 4
Evacuation Comments: Local businesses were closed, and open facilities were sheltered in place.
Resources Assigned
Chief Officer(s): 1
Engine Companies: 2
Truck Companies: 1
Squad(s): 1
Ambulance(s):
Firefighter(s): 12
Safety Officer(s):
Public Information Officer(s):
Fire Investigator(s):
Overhead Personnel:
Mutual Aid:
Specialized Equipment:
EOC:
Utilities:
Red Cross:
Percent (%) Contained or Completed:
Total (%) of Perimeter that will be Contained:
Incident Size Acreage:
Current Situation
The City of Riverside Fire Department responded to a reported natural gas leak. The first unit on arrival found an unknown high-pressure leak of a flammable gas and requested the Hazardous Materials Team. The Acorn incident command was established, and the surrounding businesses were evacuated with the area streets closed in all directions from the incident. The HazMat team made entry with SoCal Gas and City of Riverside Public Works and determined the leak was coming from a CNG storage system and delivery system. Public Works officials were able to make entry and control the active leak with Fire Department personnel on rescue standby. Approximately, 500,000 cubic feet of natural gas was released and was quickly dissipated with the high winds in the area. The HazMat team made entry into the nearby business and conducted air monitoring ensuring they were safe to reoccupy. Battalion Chief White was in command of the Acorn incident. All evacuations and street closures were downgraded while City Officials repair the faulty relief valve.
Assisting Aid Agencies
Incident Commander: Battalion Chief Greg White
Prepared By: Battalion Chief Greg White
Date / Time Posted: 01/09/2026 2008
Information Center: 951.826.5321
