East End Mystery: Tracy Officials Zero In on Medline Fire Origin

When a million-square-foot warehouse goes up in flames, the answers don’t come easy. But Tracy Fire Deputy Chief Brian Bagley is getting closer to understanding how last Thursday’s catastrophic Medline fire started—and he’s confident about where to look.

Based on cell phone footage captured in the fire’s earliest moments, officials have pinpointed the east end of the building as ground zero. It’s a critical clue in what will likely become a lengthy investigation. Right now, that area remains untouched, a preserved crime scene of sorts, waiting for investigators to wade through the wreckage once the heat subsides enough to make the work safe. The methodical approach makes sense: rush in too soon, and you destroy evidence. Wait too long, and the trail grows cold.

What’s impressive is the scale of the cleanup operation already underway. More than 8 million gallons of water have been sprayed across the site, with roughly half a dozen firefighters still rotating through the property, knocking down walls and moving debris to flush out hidden hot spots. It’s painstaking work, but Tracy Fire Deputy Chief Brian Bagley says they’re pleased with the progress. In the next 24 hours, leadership shifts from the fire department to Clean Harbors, the environmental cleanup company Medline hired to manage the longer phase of recovery.

There’s an elephant in the room worth noting: the fire suppression system. It was tested by a licensed fire and sprinkler alarm company back in January, but that detail has already sparked questions in the community. Bagley emphasized that the environmental cleanup team is completely separate from the company that handled sprinkler testing, a distinction he clearly felt needed making. The fire marshal and ATF are actively investigating the system’s role—if any—in what happened. Those records are getting a hard look from Tracy’s community risk reduction division.

For residents dealing with debris scattered across their properties, there’s help. Call 209-751-1888 to schedule free cleanup, or stop by Fire Station 95 at 7151 Tracy Hills Drive for free gloves, bags, and N95 masks. The investigation will take time. The answers will come. But for now, the focus is on cooling the site, protecting the evidence, and starting the slow work of understanding how a catastrophe happens.