California wildfire nears contaminated Santa Susana site
PUBLISHED May 22, 2026, 7:25 AM ET
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VENTURA COUNTY, California – A fast-moving wildfire in Simi Valley has burned more than 2,140 acres and advanced to within a quarter mile of the heavily contaminated Santa Susana Field Laboratory, one of the nation’s most polluted former nuclear and rocket testing sites. The Sandy Fire began on the morning of May 18, 2026, near Sandy Avenue, with investigators probing reports that a tractor striking a rock may have sparked the blaze. By Thursday, May 22, containment had reached 40 percent. Authorities ordered mandatory evacuations for over 43,700 residents, closed all Simi Valley Unified schools through Memorial Day, and deployed more than 750 firefighters supported by air tankers and helicopters. Governor Gavin Newsom secured a FEMA Fire Management Assistance Grant to bolster firefighting resources as air quality alerts spread across Southern California.
By Lauren Mitchell | JQJO News
Timeline of Events
- 1950s Santa Susana facility begins rocket testing
- Prior decades Site develops contamination from operations
- Morning May 18, 2026 Sandy Fire ignites near Sandy Avenue
- Shortly after ignition Caller reports tractor rock strike
- By May 20, 2026 Fire burns 2,100 acres
- By May 20, 2026 Containment reported at twenty-two percent
- May 22, 2026 Fire reaches 2,140 acres, forty percent containment
- May 22, 2026 Over 43,700 residents under mandatory evacuation
News Intelligence
- The Sandy Fire's proximity to the Santa Susana site raises health concerns. If the fire reaches the contaminated area, it could spread harmful particles in the smoke. Keep an eye on air quality alerts. If you're in Southern California, consider staying indoors or wearing a mask when outside.
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