Worth mentioning that in February the EPA proposed to severely deregulate chemical facilities like the one in Garden Grove, gutting third-party audits, hazard reporting, and public transparency requirements. They titled it the ‘Common Sense Approach to Chemical Accident Prevention.’ The public comment window closed just eleven days before this disaster…<p><a href="https://www.govinfo.gov/content/pkg/FR-2026-02-24/pdf/2026-03633.pdf" rel="nofollow">https://www.govinfo.gov/content/pkg/FR-2026-02-24/pdf/2026-0...</a>
It's not like chemical spills didn't happen before these changes though. Let's not sensationalize. Can you directly link the change in policy t this leak?
Yeah, what this administration calls common sense is more like dumbass sense than anything else. On almost every level.
To zoom out, there’s a HUGE percentage of the US who uses “common sense” as a catch-all excuse to end all discussion.<p>In the debates I watch, they typically don’t have the mental capacity to steel man the opposition’s position so they can’t comprehend that someone else has a different intuition / “common sense” than them.<p>Beyond that, “common sense” has become a dog whistle to both virtual signal / vice signal to like-minded in groups and to deride outgroups. In a way, using that phrase is a way to dehumanize the person they are talking to.
It's common sense if you're trying to make more money and are a psychopath.
<a href="https://en.wikipedia.org/wiki/Garden_Grove_chemical_leak" rel="nofollow">https://en.wikipedia.org/wiki/Garden_Grove_chemical_leak</a>
I'd be curious how it came to pass that 40k people were living within the blast radius of a plant processing toxic chemicals. Isn't this sort of thing the primary justification for the existence of zoning laws?
The plant has been around since at least the 1970s. At the time it likely was on the edge of town, but through 50 years of urban sprawl, the town grew around it.<p>It may be even older than that. My source for the age of the site is this 1970 NASA ALSEP supplier list (from the moon program!), which lists the address as an approved manufacturer on page 38: <a href="https://www.lpi.usra.edu/lunar/ALSEP/pdf/31111000671279.pdf" rel="nofollow">https://www.lpi.usra.edu/lunar/ALSEP/pdf/31111000671279.pdf</a>
The actual site of the tank is 33.78356416377991, -117.99993897629278 [1] - its in an industrial park, and its not a large scale chemical manufacturing facility.<p>Its 'light manufacturing' for a company that makes custom formed acrylics for aerospace.<p><a href="https://www.google.com/maps/place/33°47'00.8%22N+117°59'59.8%22W/@33.7835642,-118.0005827,204m/" rel="nofollow">https://www.google.com/maps/place/33°47'00.8%22N+117°59'59.8...</a>
Perhaps "light manufacturing" is the wrong classification for this kind of business, then. Most of their neighbors are distribution warehouses, or companies doing machining or sheet metal pressing - if you ask me those are more in line with the definition of "light manufacturing" than the 7,000 gallon runaway exothermic reaction we're seeing here.
I get that, but the reality is that 40k people were evacuated. Shouldn't zoning be set up so as to prevent that? Light manufacturing in general is fine but it seems like these particular storage tanks might have been a bit too large for that location.
> I get that, but the reality is that 40k people were evacuated. Shouldn't zoning be set up so as to prevent that?<p>It's funny that you would suggest this about California, where it is notoriously hard to build things.<p>Accidents happen, it's not obvious that this was a forseeable outcome (happy for corrections from folks who have expertise in this area).
California isn't notoriously hard to build in - that's a result of it being <i>incredibly conservative</i> - not politically, but "anything that's built can remain forever, nothing new can be built" conservative.
You’re trying to make a distinction without a difference.<p>It’s notoriously difficult to build here BECAUSE of NIMBYs, house values preservation, “preservation of character”, CEQA (a state law that gives LOTS of different people who shouldn’t have this power an effective veto for any new construction).
Since the plant was around long before the homes, the homes were built around it. Zoning laws, if they existed then, should have prevented the homes from building, not the plant.
If you are worried about this incident, just wait until you hear about crude-by-rail! Crude is transported through LOTS of residential neighborhoods and zoning doesn’t matter. Additionally, railroads are governed by federal law so states / local munis can’t put additional restrictions on where, when, or speed limits.
That being said: <a href="https://www.ocregister.com/2026/05/22/disneyland-and-knotts-berry-farm-monitoring-garden-grove-hazmat-crisis/" rel="nofollow">https://www.ocregister.com/2026/05/22/disneyland-and-knotts-...</a>
That area has dozens of aerospace manufacturers, building up since before WW2. People wanted to live close to work. There are lots of homes and commercial areas and industrial parks are tightly mixed together.<p>Source: I’ve worked in aerospace in Orange County.
As someone whose childhood home is in the evac zone ... It's a bit crazy I was living in this neighborhood my entire childhood just waiting for this to go boom<p>That being said California is very industry friendly and all the stuff about overregulation is from people who don't get California.
Because greater Los Angeles is the USA's (post-)WWII aerospace hub disguised as a megacity and cultural production center? All sorts of folks spent the 40s-00s (scientifically) blowing stuff up in the hills, and manufacturing the resulting products down in the basin and points south. Those businesses needed labor, which needed nearby housing, and here we are.
That's... not really a reasonable characterization of LA's urban growth patterns. To begin with, Hollywood quite clearly predates the aerospace buildout in the 40's and 50's. It was an oil production and refining hub before that, and an agricultural shipping center even before the dust bowl.<p>This particular neighborhood in Orange County certainly looks aerospacey, but I bet the Disney-centered service workers in Anaheim made up just as much of the population as the industrial folks.<p>Big cities are big for a bunch of reasons, basically. There are no simple answers at this scale.
It should have been in the disclosures for all the home purchases at least, but renters don’t get those (maybe they should?)
Doesn't that mean they can bike to work there?
Imagine how often this situation lie this would be happening without institutions like OSHA or the EPA.<p>Stuff like this happens in Texas on a fairly regular basis, but it rarely ever makes national news.
From what I hear[1], we should be relying on the fact that environmental disasters are bad for business in a true Scotsman "free market".<p>[1] <a href="https://news.ycombinator.com/item?id=48238025#48240301">https://news.ycombinator.com/item?id=48238025#48240301</a>
Why can’t they drill it and pipe it off into some drainage pipe for cooling or collecting in trucks?<p>Divide and conquer
Where are all of the humanoid robots? Get them in there with whatever the oil and gas industry uses for tapping pipes/containers under pressure. I'm only half kidding.
More fire / explosion risk than the "toxic cloud engulfs city" rhetoric people have been spreading.<p><a href="https://www.fishersci.com/store/msds?partNumber=AC127140100&productDescription=METHYL+METHACRYLATE+STA+10LTM&vendorId=VN00032119&countryCode=US&language=en" rel="nofollow">https://www.fishersci.com/store/msds?partNumber=AC127140100&...</a>
I used to manufacture methylmethacrylate, as well as acrolein (which is often co-produced with MMA). These are among some of the more toxic chemicals currently manufactured in the USA.<p>Acrylates in general are truly awful. Our guys died with their faces boiling and breathing in their own vomit while also still vomiting. From a relatively brief exposure.<p>A bigger public risk of MMA is actually the extremely low odor threshold (in the parts per billion). The god-awful smell can make an area temporarily "unlivable" even below any known health thresholds. And it affects very large areas, because of the very low odor threshold.
They talk about the possibility of a spill going into the environment, but if they know it might spill, can't they make it spill and capture it?
The LD50 of methyl methacrylate in rates is 7-10 g/kg. In comparison, the LD50 of table salt in rats is 3 g/kg. So it's not a highly toxic chemical.
It's neurotoxic, a respiratory irritant, and an eye irritant.<p>No, if it's injected in your bloodstream it won't immediately kill you, but if you inhale a few milligrams of vapor you'll wish you could cough up a lung.<p>Also, the vapors are heavier than air, so if you fall in a ditch near the hypothetical blown tank you would likely suffocate and die.
It is however highly flammable and potentially explosive when sealed in a tank, which is the main concern.
They say it will fail for sure, either leak or explode.<p>I wonder why they can't drain the tank into another facility. Maybe they just lack an appropriate container.
I live nearby, I'm hosting some family at my home who have been evacuated. A fireman friend who has been to the site said the same. That it'll either explode or spill and they're banking on it spilling.
The valve's jammed, so they can't really pump things in or out.
I believe they are having issues with the valves, from what I’ve read.<p>But I’m just some guy.
Is it not possible for them to just... spray it with ice cold water?
I guess you ask why they are using water at ambient temperature (20°C; 68°F) instead of very cold water (0°C; 32°F). Some reasons I can think now:<p>They are using a lot of water, as most as possible, from pipes at whatever temperature it is. There are no enough mobile refrigerators, not enough electricity to make them work, and it's very hard to transport cold water or ice if you don't use the pipes.<p>Also, the center of the tank is hot and reacting, but the external part is a nasty block if plastic that acts like a shield and isolate it from the cold water outside.<p>This is a common problems in big chemical plants when you have exothermic reactions. It's not enough to cold it down, you need to ensure all parts are cold down.<p>For comparison, there is a nice video by NileRed <a href="https://www.youtube.com/watch?v=phNLecfyWS8" rel="nofollow">https://www.youtube.com/watch?v=phNLecfyWS8</a> He is making Bakelite that is a type of plastic. It's a tiny amount, in a lab, on purpose and he may make a few attempts. Anyway it overheat and instead of a nice piece of plastic he got a nasty block of foam with burned plastic. No imagine a huge tank of a similar chemistry reaction.
The difference in cooling potential between cold water and water at ambient temperature is minimal. Cooling with water primarily comes from phase change or heat exchange; both can move vastly more heat than a small difference in temperature.<p>Chilling the water would massively complicate the logistics with a very marginal improvement in heat removal.
Ah, that makes sense. It's too bad they can't drill into it to relieve pressure without destroying the integrity of the tank (not that I'd want to be anywhere close to it either).<p>If they didn't have to worry about it imminently exploding I wonder if they could somehow wrap it with reinforcement (e.g., wrap some high strength metal around the tank to prevent it from deforming when drilled into) and then drill into it to extract the liquid?<p>One of my other less serious ideas was to helilift a Chernobyl style containment structure around it, but I imagine they don't have one of those just sitting around waiting to be used.
They have been doing exactly that for the past 24 hours. However the contents of the tank are polymerizing, that reaction is exothermic, and the tank is quite large.
Read the article. They have been doing that, but that is just slowing things down and buying them time.
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I love how the current title of this post just assumes that everyone lives in California.<p>There are other "Orange County"s in the U.S.
Do you get angry when someone mentions London that they didn't specify that it is London, England?<p>Because there are other Londons.
It used to say CA which is even worse.. given that's a country code (not where this Orange County is), and also means various things in other countries.. the state of California for people who live in the US, for example. What are you thinking; US-CA-OC? (We're starting to look a little ISO)