Stamets does it again

[Torsten]

April 27, 2008

Saddled With Legacy of Dioxin, Town Considers an Odd Ally: The Mushroom

By ANNIE CORREAL

FORT BRAGG, Calif. — On a warm April evening, 90 people crowded into the cafeteria of Redwood Elementary School here to meet with representatives of the State Department of Toxic Substances Control.

The substance at issue was dioxin, a pollutant that infests the site of a former lumber mill in this town 130 miles north of San Francisco. And the method of cleanup being proposed was a novel one: mushrooms.

Mushrooms have been used in the cleaning up of oil spills, a process called bioremediation, but they have not been used to treat dioxin.

“I am going to make a heretical suggestion,” said Debra Scott, who works at a health food collective and has lived in the area for more than two decades, to whoops and cheers. “We could be the pilot study.”

Fort Bragg is in Mendocino County, a stretch of coast known for its grand seascapes, organic wineries and trailblazing politics: the county was the first in the nation to legalize medical marijuana and to ban genetically modified crops and animals.

Fort Bragg, population 7,000, never fit in here. Home to the country’s second-largest redwood mill for over a century, it was a working man’s town where the only wine tasting was at a row of smoky taverns. But change has come since the mill closed in 2002.

The town already has a Fair Trade coffee company and a raw food cooking school. The City Council is considering a ban on plastic grocery bags. And with the push for mushrooms, the town seems to have officially exchanged its grit for green.

The mill, owned by Georgia-Pacific, took up 420 acres, a space roughly half the size of Central Park, between downtown Fort Bragg and the Pacific Ocean. Among several toxic hot spots discovered here were five plots of soil with high levels of dioxin that Georgia-Pacific says were ash piles from 2001-2, when the mill burned wood from Bay Area landfills to create power and sell it to Pacific Gas & Electric.

Debate remains about how toxic dioxin is to humans, but the Department of Toxic Substances Control says there is no safe level of exposure.

Kimi Klein, a human health toxicologist with the department, said that although the dioxin on the mill site was not the most toxic dioxin out there, there was “very good evidence” that chronic exposure to dioxin caused cancer and “it is our policy to say if any chemical causes cancer there is no safe level.”

Fort Bragg must clean the dioxin-contaminated coastline this year or risk losing a $4.2 million grant from the California Coastal Conservancy for a coastal trail. Its options: haul the soil in a thousand truckloads to a landfill about 200 miles away, or bury it on site in a plastic-lined, 1.3-acre landfill.

Alarmed by the ultimatum, residents called in Paul E. Stamets, author of “Mycelium Running: How Mushrooms Can Help Save the World.”

Typically, contaminated soil is hauled off, buried or burned. Using the mushroom method, Mr. Stamets said, it is put in plots, strewn with straw and left alone with mushroom spawn. The spawn release a fine, threadlike web called mycelium that secretes enzymes “like little Pac-Mans that break down molecular bonds,” Mr. Stamets said. And presto: toxins fall apart.

In January, Mr. Stamets came down from Fungi Perfecti, his mushroom farm in Olympia, Wash. He walked the three-mile coastline at the site, winding around rocky coves on wind-swept bluffs where grass has grown over an airstrip but barely conceals the ash piles. It was “one of the most beautiful places in the world, hands down,” he said.

Quick to caution against easy remedies — “I am not a panacea for all their problems” — he said he had hope for cleaning up dioxin and other hazardous substances on the site. “The less recalcitrant toxins could be broken down within 10 years.”

At least two dioxin-degrading species of mushroom indigenous to the Northern California coast could work, he said: turkey tail and oyster mushrooms. Turkey tails have ruffled edges and are made into medicinal tea. Oyster mushrooms have domed tops and are frequently found in Asian food.

Local mushroom enthusiasts envision the site as a global center for the study of bioremediation that could even export fungi to other polluted communities.

“Eventually, it could be covered in mushrooms,” said Antonio Wuttke, who lives in neighboring Mendocino and describes his occupation as environmental landscape designer, over a cup of organic Sumatra at the Headlands Coffeehouse.

The proposal is not without critics, however.

“There still needs to be further testing on whether it works on dioxin,” said Edgardo R. Gillera, a hazardous substances scientist for the State Department of Toxic Substances Control. “There has only been a handful of tests, in labs and field studies on a much smaller scale. I need to see more studies on a larger scale to consider it a viable option.”

On April 14, at a packed City Council meeting, an environmental consultant hired by the city voiced skepticism, citing a study finding that mushrooms reduced dioxins by only 50 percent. Jonathan Shepard, a soccer coach, stood up and asked: “Why ‘only’? I think we should rephrase that. I think we should give thanks and praise to a merciful God that provided a mushroom that eats the worst possible toxin that man can create.”

Jim Tarbell, an author and something of a sociologist of the Mendocino Coast, said the enthusiasm for bioremediation showed a change in the culture at large.

“We are trying to move from the extraction economy to the restoration economy,” Mr. Tarbell said. “I think that’s a choice that a broad cross-section of the country is going to have to look at.”

At the April 14 meeting, Georgia-Pacific promised to finance a pilot project. Roger J. Hilarides, who manages cleanups for the company, offered the city at least one 10-cubic-yard bin of dioxin-laced soil and a 5-year lease on the site’s greenhouse and drying sheds for mushroom testing. And the City Council said it would approve the landfill but only if it came with bioremediation experiments.

So, sometime later this year, Mr. Stamets is scheduled to begin testing a dump truck’s load of dioxin-laced dirt in Fort Bragg.

“One bin. Ten cubic yards. That’s a beginning,” said Dave Turner, a Council member. “I have hope — I wouldn’t bet my house on it — but I have a hope we can bioremediate this.”

NYT

http://www.nytimes.com/2008/04/27/us/27bra...agewanted=print

[transDiMenTional]

now this is interesting stuff!

[watertrade]

Thanks for posting T.

Stamets is a very interesting guy with his heart in the right place. I would love to be involved in some of his projects.

[mu!]

yay for mushies!

[Torsten]

yeah, he is pretty amazing. he's also developed a way to inject special fungi into benzene polluted sites [eg refineries] that will stop the benzene from reaching the water table. But more importantly for australia he has developed a fungus that wipes out fire ant colonies

[baphomet]

"I would love to be involved in some of his projects."

Yea I would love the patent for them too, last I heard he had taken out 22 patents in 3 years, the fire ant one he sold to a pest control company, it was fascinating to see how it worked, little mushrooms end up popping out of the ants head and this not only works for fire ants but has been aproved for all social insects and a house can be treated for only $25 cents.

This guy is amazing!

EDIT: If you guys are interested in this kind of thing I recommend you watch one of his lectures called 'The Mysteries Of Mycology' also called ' How Mushrooms Can Help Save The world'.. It will blow your mind I promise!

Edited May 2, 2008 by baphomet

[Aya]

Very interesting read. Thanks for posting that T.

And welcome to the forum Baphomet, nice avatar.

[baphomet]

Thankyou

[worowa]

That's scary stuff-the fire ant technology being approved for all social insects! Americas bees have been decimated lately, and no one is sure why....social insects keep many ecosystems functioning, from termites to ants etc.

I dig the bioremediation, but the biocidal uses needs to be scrutinised to ensure it is site specific and can't escape.

[baphomet]

It also works on all non social insects that it has been tested on but not approved for this as far as I know, I was a little concerned when I heard about this too for exactly the same reasons, we can only hope they know what they are doing.

I said he was amazing but I did not say he was entirely selfless, I mean he is pursuing patents pretty ferociously and all though he loves old growth forests he did profit from their destruction when he was a logger for 3 years. I don't think we have too much to worry about though, he is intimately aware of the delicate balance and interconnectedness of our ecosystem and I personally don't believe he would do anything to threaten this. Lets just hope I'm right.

[devance]

http://www.upi.com/NewsTrack/Science/2008/..._leaching/7903/

The researchers found free-living and plant symbiotic (mycorrhizal) fungi can colonize depleted-uranium surfaces and transform the metal into uranyl phosphate minerals.

I read another one that just watering creates the natuarlly occuring process to happen.

But theres alway the best one[fungi]to find.

But a happy outlook on bioremediation.