{"id":11532,"date":"2026-06-02T13:32:19","date_gmt":"2026-06-02T13:32:19","guid":{"rendered":"https:\/\/siliconvalleymovingpost.com\/?p=11532"},"modified":"2026-06-02T13:32:19","modified_gmt":"2026-06-02T13:32:19","slug":"the-non-toxic-event-in-garden-grove-frustrates-inspires","status":"publish","type":"post","link":"https:\/\/siliconvalleymovingpost.com\/?p=11532","title":{"rendered":"The non-toxic event in Garden Grove frustrates, inspires"},"content":{"rendered":"

If.<\/p>\n

If is little, as words go, but often powerful. And in any honest account of the recent chemical scare in Garden Grove, \u201cif\u201d is huge.<\/p>

Read more Wall Street poised to open lower even as AI and data center companies soar on still-hot demand<\/a><\/p>\n

If Orange County Fire Agency responders had been less brave and nimble; if their bosses made different decisions; if thousands of families hadn\u2019t actually listened (not a given) when told to spend an unknown amount of time in unknown places away from their homes; if the company at the center of it all hadn\u2019t told authorities what it was seeing (legally required but also not always a given); if the tank holding a dangerous chemical hadn\u2019t fissured in precisely the way that it did; if\u2026<\/p>\n

You get the idea. The incident at a 500-employee aerospace manufacturing plant in Garden Grove was many things: a mixed bag of communication wins and stumbles, an expensive and frustrating disruption for thousands of local families, a vivid example of why old-school industrial plants maybe shouldn\u2019t be located in densely populated cities.<\/p>\n

But it wasn\u2019t a disaster. Nobody died. Nobody got hurt.<\/p>\n

The system held.<\/p>\n

And the loudest questions raised since the incident fizzled out:\u00a0Are the rules regulating dangerous chemicals designed to protect people or businesses? Is the county\u2019s emergency response system up to the task of, say, a major earthquake? Do working-class people get treated the same as wealthier people during an emergency?<\/p>\n

They sound like air kisses when compared with the two versions of catastrophe that experts believed to be most likely: a deadly fireball spewing a toxic cloud over a county of 3.1 million people, or a flood of poison flowing out of the plant and into storm drains and, eventually, the ocean.<\/p>

\n<\/div>\n

That said, for 120-plus hours, from mid-afternoon May 21 through the evening of May 26, the bullet-dodged outcome wasn\u2019t known. In fact, the opposite was loudly predicted.<\/p>\n

And as it played out in public \u2014 with images of hoses shooting water at aging industrial tanks, scary updates about a slow boil inside a vat of flammable chemicals and public evacuation orders that touched as many as 50,000 people \u2014 the incident in Garden Grove took on the feel of an action movie come to life, complete with a ticking bomb and rising odds of chaos and potential for mass casualties.<\/p>\n

Close calls, it turns out, can be scary.<\/p>\n

Here\u2019s how different people saw key moments of a disaster averted:<\/p>

\n<\/div>\n

May 21: 3:22 p.m.<\/h4>\n

The Orange County Fire Authority answers an emergency call from workers at the Garden Grove manufacturing plant owned by GKN Aerospace, a company that makes windows and canopies for commercial and military aircraft and spacecraft.<\/p>\n

The report is about an \u201cactive leak.\u201d And, soon, the OCFA crew learns that one of three storage tanks at the plant \u2014 one that contains the chemical methyl methacrylate, or MMA \u2014 is bulging. They also learn the tank in question is \u201coff-gassing,\u201d which is jargon for \u201cno longer holding all the stuff that\u2019s supposed to be inside, inside.\u201d<\/p>\n

Because MMA is bad if you inhale it (in low doses, it can cause everything from respiratory distress to nerve damage; in bigger doses, it can kill you), and because bulging and off-gassing are signs that all is not normal inside the tank, OCFA leadership starts to assess how much risk the conditions pose to the public.<\/p>\n

They also know this: The roughly 7,000 gallons of MMA stored inside the bulging, belching tank is highly flammable. What\u2019s more, they know it\u2019s a type of chemical that can drive a thermal event known as a \u201cboiling liquid expanding vapor explosion,\u201d or BLEVE, which is the kind of combustion that happens when a gas heats beyond its normal boiling point while still under pressure.<\/p>\n

So even as they work to cool the tank, inside and out, OCFA leaders begin to assess whether nearby residents should be evacuated. And, if so, how near is \u201cnearby?\u201d<\/p>\n

The downsides to an evacuation order are clear: There\u2019s not a lot of warning and there are relatively few places to go; lives will be disrupted.<\/p>\n

And the reason those downsides sound semi-lame, even after the fact?<\/p>\n

\u201cThat tank was imminently ready to blow,\u201d said OCFA Division Chief Craig Covey, who led the agency\u2019s response in Garden Grove, during a May 26 post-mortem meeting with residents and city leaders.<\/p>\n

So Covey recommends evacuating the neighborhoods within a half-mile of the GKN plant, which is on Western Avenue, just south of Chapman Avenue.<\/p>\n

Then, as police begin urging people to leave, Covey and others begin working on ways to stave off a chain of chemical reactions that could end in a fireball. Water hoses are part of their plan. So is fixing the valve so the tank will stop overheating.<\/p>\n

For a time, the moves seem to be working.<\/p>\n

\u201cThose (initial) cooling measures were successful,\u201d Covey explained during the meeting. \u201cConfidence levels were high that we could put in a neutralizer into the tank. \u2026\u00a0 We believed we could reduce the explosion potential. Things continued to trend in the right direction.\u201d<\/p>\n

Soon, Covey makes another key move; he recommends calling off the evacuation.<\/p>\n

\u201cWe made the determination to repopulate,\u201d Covey said.<\/p>\n