What's in that bright red fire retardant? No one will say, so we had it tested

laist.com

193 points by littlexsparkee 8 days ago


Tabular-Iceberg - 6 days ago

> “It’s not in our interest to share product with public or private agencies,” Jurasek said at the time. “You are not the first person to ask for us to give them fire retardant. It happens. It’s not something we do.”

I don’t get why they are acting like they have something to hide. Phosphate is mined from rock, rock contains all sorts of other elements including heavy metals. That’s simply how minerals work. It’s not by itself an indication that anyone has done anything wrong.

csours - 6 days ago

This feels like one of those things where context changes over time and takes a product outside of it's original use case.

Fire retardant is an emergency measure, one that would rightly be expected to see exceptionally low usage overall. But over time, more people and property have gotten closer to the forest; forest fires affect more people for many reasons.

So fire retardant use is not so rare.

The Therac-20 was a fine piece of electro-mechanical-nuclear technology, but the Therac-25 moved the control scheme out of its original context, and took away some of the physical interlocks. The Therac-25 is not remembered fondly.

Context changes over time, and assumptions need to be re-examined.

perihelions - 5 days ago

- "Phos-Chek MVP-Fx is primarily made of ammonium phosphates, which are derived from phosphate. That rock, when mined, can contain trace amounts of heavy metals."

The thing they're catastrophizing about is rock phosphate—ordinary fertilizer that's mixed into the soil of every food farm in the world.

I'm not sure if the journalists who wrote this article are aware of this. "It's COVERING my garden plants!" reads quite definitely when you recognize it's f'ing Miracle-Gro.

https://www.usgs.gov/centers/national-minerals-information-c...

- "Phosphorus is an essential element for plant and animal nutrition. Most phosphorus is consumed as a principal component of nitrogen-phosphorus-potassium fertilizers used on food crops throughout the world. Phosphate rock minerals are the only significant global resources of phosphorus."

https://www.health.state.mn.us/communities/environment/risk/... ("Heavy Metals in Fertilizers")

- "Risk assessments conducted by the US Environmental Protection Agency and others have concluded that the hazardous constituents in inorganic fertilizers generally do not pose risks to public health or the environment."

Teever - 6 days ago

> Late last year, LAist requested samples of MVP-Fx from Cal Fire, the U.S. Forest Service and Perimeter Solutions, which manufactures the product, for the purpose of running an independent analysis for heavy metals. All declined.

> “It’s not in our interest to share product with public or private agencies,” Jurasek said at the time. “You are not the first person to ask for us to give them fire retardant. It happens. It’s not something we do.”

How is this legal? Like how can the government spray random chemicals all over the land and there's no way for the public to compel them or the people supplying them to declare what's in them?

alephnil - 6 days ago

Some of the heavy metals are likely from the fire retardant, and some are likely from the fire. Look at zinc vs lead for example. There is little lead in the unused sample vs the environmental samples, thus most of the lead is likely not from the fire retardant. I would guess the most likely source is lead from roofs of burning houses.

Zinc on the other hand is present in all samples in about the same amount, including the unused one. That means that the zinc is likely from the fire retardant rather than the environment. Other metals are present in slightly higher amounts in the environmental samples, and often only in some of the samples. In that case both the fire retardant and the fires/environment are likely to contribute.

To me it seems like copper, lead and manganese are mostly from the fires, while zinc and chromium seems to be from the fire retardant. Then there is the sample from the Franklin fire, that seems to be higher in everything.

somat - 5 days ago

I was trying to figure out what is in class A firefighting foam last week.

Nobody really wants to say, it is all trade secrets, evading a direct response, using vague sweeping terms, like it contains surfactant and foaming agents.

However based on the published MSDS. my guess, soap, it is mainly soap.

https://www.fs.usda.gov/rm/fire/wfcs/products/msds/foam/silv...

Note that I do think it is soap finely engineered for it's fire suppression characteristics. I also think you would get 80% there with a bottle of dish soap.

Rotundo - 7 days ago

It's ammonia phosphates with trace amounts of heavy metals.

DuckConference - 8 days ago

All the heavy metals were below 1ppm, are any of the levels concerning?

ChrisMarshallNY - 5 days ago

> Lane feels firefighters were left in the dark

That kind of thing happens a lot (see “9/11 Syndrome”).

Kind of a “damned if you do, damned if you don’t” situation.

One of the things about fire, is that it alters chemistry. Perfectly safe materials, can turn into highly toxic gas, when heated. In many cases, this cannot be anticipated, or realistically prevented. There are also firefighting foams and whatnot. I think some of the foams contain fairly significant quantities of questionable chemicals. They are pretty much required, for Li-ion battery fires.

Firemen kinda take the brunt of that. I know a number of retired firefighters, and they all have health issues.

sparker72678 - 6 days ago

We should know what’s in the retardant, yes.

The alternative to retardant at the moment is uncontrolled wildfires.