Tag: water

Diving for Cures

  • Researchers are hoping to find cures underwater in corals and sponges. (Photo courtesy of NOAA)

Making medicine from things
found in nature isn’t a new
idea. Think, aspirin – which
originally came from the bark
of willow trees. Now drugs
derived from ocean animals are
slowly making their way onto
shelves. Samara Freemark talks to a researcher
who helps get them there:

Transcript

Making medicine from things
found in nature isn’t a new
idea. Think, aspirin – which
originally came from the bark
of willow trees. Now drugs
derived from ocean animals are
slowly making their way onto
shelves. Samara Freemark talks to a researcher
who helps get them there:

Mark Slattery is trying to find a cure for cancer. Slattery is a pharmacology professor at the University of Mississippi. But he doesn’t really spend much time in the lab. Instead, he’s usually in a wetsuit, scuba diving off the coasts of places like Guam and Antarctica.

He’s taking samples from tens of thousands of corals and sponges. He’s looking for that one special species that might make a chemical that could cure disease. He calls it, ‘diving for cures.’

“In many ways, it’s like going out and playing your super lotto or whatever. You pick your eight numbers and you see if you hit or not.”

The idea is pretty simple. A third of the medicines on shelves today were derived from plants and animals that live on land. So ocean researchers got to thinking that the organisms they studied probably also produced a lot of useful chemicals.

Take corals and sponges. They can’t run away from predators, so instead they squirt out chemicals that poison the fish that try to take a bite out of them. Marc Slattery says those toxins are bad for the fish – but they could be good for people.

“Those particular compounds that tell a fish “not today” are the same ones that might tell the AIDS virus “you can’t replicate” or tell a cancer cell “you’re dead” or those kinds of things.”

So Slattery and other researchers like him clip off bits of sponges and corals. When they get back to the lab they extract the chemicals, which is a nice way of saying…

“Stick it in a blender with methanol and ethyl acetate and hexanes and all those sorts of things you used in organic chemistry lab, and you throw away the dead sponge, and the tarry residue that’s left is sort of the biochemistry that came out of that sponge.”

“So you make a sponge smoothie?”

“Exactly.”

Once they’ve extracted the chemicals, researchers test to see if they have any human application. If a compound looks promising, it moves on to clinical trials. Those trials can take decades, which is why ocean-derived drugs are only now starting to hit the market. So far only two have been approved for use in the United States: a painkiller, and a cancer drug marketed by Johnson and Johnson.

I wondered how ocean conservationists felt about diving for cures. So I called up Sandra Brooke. She studies corals at the Marine Conservation Biology Institute. Brooke says she does worry that diving for cures could lead to over-harvesting.

“Once something becomes valuable to people, there’s a resistance to closing access to it. It becomes harder to regulate it.”

But she says corals are under much greater and much more immediate threats. The biggest culprit is industrial trawling. That’s when fisherman scrape reefs off the ocean floor so they can get to the fish.

“It’s just like the clear cutting of the forest, but on a much vaster scale. They are deliberately mowing down these deepwater coral ecosystems that are thousands and thousands of years old – some of the oldest animals ever measured. And that’s not going to come back – not in our lifetimes, not in many lifetimes.”

There’s also the fact that oceans are changing as the climate does. Those changes mean corals are becoming weaker. Marc Slattery thinks he might be seeing that in a Pacific reef he’s been studying for fifteen years.

“When we went back and started looking at it, we noticed that there was a change in the chemistry through time. As things have heated up on the reefs, there’s a physiological effect that has cascaded down into their ability to produce the chemistry we’re used to seeing. Early on it was so apparent, it was always there, and now they seem to be able to produce less of it.”

That’s means that today the cure for cancer might be out there in some coral reef, but it could be gone tomorrow.

For The Environment Report, I’m Samara Freemark.

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NOAA Looks Into Navy Sonar

  • Critics of sonar say it’s so loud that it confuses whales and other marine animals, and can cause them to be injured or even die. (Photo courtesy of NOAA)

A new federal ruling could
protect marine animals by
changing how and where
the Navy uses sonar. Samara Freemark reports:

Transcript

A new federal ruling could
protect marine animals by
changing how and where
the Navy uses sonar. Samara Freemark reports:

Critics of sonar say it’s so loud that it confuses whales and other marine animals, and can cause them to be injured or even die. That’s why environmental groups have been pushing for tighter regulations on the technology.

This week the National Oceanic and Atmospheric Administration, or NOAA, took a step in that direction. The agency acknowledged that current policies are not doing enough to protect marine mammals. And NOAA says it will identify critical marine habitats impacted by sonar.

Michael Jasny is a policy analyst with the environmental group the Natural Resources Defense Council. He hopes the policy will be a first step to banning sonar in those habitats.

“It’s not a prescription, it’s a plan. And it sets in motion potentially a very significant change. I mean, the proof will be in the pudding, of course.”

Jasny says his organization will work with NOAA and the Navy to negotiate sonar policy so that marine mammals are not hurt.

For The Environment Report, I’m Samara Freemark.

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Interview: Asian Carp

  • Asian Carp can weigh up to 100 pounds and are notorious for jumping out of the water and injuring boaters. (Photo courtesy of the US Fish and Wildlife Service)

The US Supreme Court has turned
down a request from Michigan and
other Great Lakes states. They
wanted the locks in a canal to
be closed immediately. That man-made
canal artificially connects the
Mississippi River system and the
Great Lakes. For now at least,
those locks will stay open to cargo
traffic. This fight is all about
a fish, a type of Asian Carp, that
many people don’t want to get into
the Great Lakes. Lester Graham
spoke with David Jude about the
threat of the fish. Jude is a
research scientist and fish biologist
at the University of Michigan:

Transcript

The US Supreme Court has turned
down a request from Michigan and
other Great Lakes states. They
wanted the locks in a canal to
be closed immediately. That man-made
canal artificially connects the
Mississippi River system and the
Great Lakes. For now at least,
those locks will stay open to cargo
traffic. This fight is all about
a fish, a type of Asian Carp, that
many people don’t want to get into
the Great Lakes. Lester Graham
spoke with David Jude about the
threat of the fish. Jude is a
research scientist and fish biologist
at the University of Michigan:

Lester: We keep hearing if this fish gets into the Great Lakes system, it will be devastating for the ecology of the lakes, ruin the commercial and recreational fishing. What is it that all these people think this Asian Carp fish will do to the Great Lakes?

David Jude: Well, I am sure they all watch the video where the fish are jumping out of the river, in the Illinois River, and harming some biologists and some people that are there.

Lester: Smacks them in the head!

David: Yes, so they are very concerned about that. And then biologists are concerned about the fact that they have taken over the river there, they are very voracious feeders, and so they have really crowded out a lot of other fish in the river. So there are a lot of things that are going on with regards to impacts on humans as well as impacts on fish communities that we certainly don’t like.

Lester: And these are big fish, they are up to 100 pounds.

David: Exactly.

Lester: There’s this electric barrier in place in the canal that is supposed to prevent these Asian Carp from swimming from the Mississippi River into the Great Lakes. Environmentalists say that there’s still too much of a risk, too many scenarios where the fish could get through because of flooding or some other scenario, and that canal should be closed. The Obama Administration is fighting that, the state of Illinois if fighting that, they say we need that open. There’s barge traffic carrying steel and rock and gravel and grain, all of this seems to be coming down to money. Is money the right measure when we’re looking at this situation?

David: No, it’s not. I mean traditionally, we’ve gone into the, a lot of these decisions are made and the environmental costs are not taken into consideration. The costs of having that canal open are going to be very very high and, uh, and you have to balance it against what the sport fishery and the commercial fishery is the Great Lakes is going to be because once they get in there it’s going to be a very detrimental impact on them.

Lester: This fish is knocking at the door, we’re not even sure it’s not already in, so, is there a certain inevitability that this fish is going to be in the Great Lakes and we should just start making plans to deal with it?

David: Well, I don’t think it’s inevitable and I think if we did stop them and somehow were able to shut down the Chicago Ship and Sanitary Canal and prevent that avenue, we’d go a long way toward preventing them from coming in. The other avenue for them getting in, of course, is people that like to eat them and they might bring them in and stock them. So, I think we should be doing everything we can right now to stop them, I mean this is our opportunity to do that. But, the other part of it is, because they’re so close, and because as you know there probably could be some in the Lakes already, you know, we should be prepared to have some plans on what we might want to do to try to, you know, focus on some of these optimal spawning sites and see what we can do to keep their populations down there.

Lester: David Jude is a research scientist and fish biologist at the University of Michigan. Thanks for coming in!

David: Oh, my pleasure.

Related Links

Asian Carp Update

  • Charter boat captain Eric Stuecher says Asian Carp will likely ruin his business. (Photo by Jennifer Guerra)

A big monster of a fish is at
the center of a US Supreme Court
case. Asian Carp are making their
way up the Mississippi towards the
Great Lakes. Michigan’s Attorney
General filed a lawsuit asking the
Court to close a Chicago canal in
order to keep the carp out. The
shipping industry says, ‘no can do.’
Jennifer Guerra has
a closer look at what’s at stake:

Transcript

A big monster of a fish is at
the center of a US Supreme Court
case. Asian Carp are making their
way up the Mississippi towards the
Great Lakes. Michigan’s Attorney
General filed a lawsuit asking the
Court to close a Chicago canal in
order to keep the carp out. The
shipping industry says, ‘no can do.’
Jennifer Guerra has
a closer look at what’s at stake:

There’s one way to look at this as a purely economic story. In one corner you’ve got the people who ship cargo by water.

“Lynne Munch, senior vice president regional advocacy of the American Waterways Operators.”

She says, if the Illinois is forced to close two of the locks in the Chicago canal permanently, more than 17 million tons of cargo will have to be shipped by truck instead of barge, and hundreds of jobs will be lost.

“One company alone has reported that they will lose 93 jobs next year if the locks are closed. One of our towing companies estimates they’ll lose more than 130 jobs if the locks are closed.”

In the other corner, you’ve got the seven billion dollar tourism and fishing industries.

“Oh hi, I’m Eric Stuecher, I own a company called Great Lakes Fishing Charters.”

Stuecher takes people out on the Great Lakes and in rivers across Michigan. Salmon, Trout, Perch, you name it, he’ll help you fish it. But if the invasive Asian Carp get into the Great Lakes?

“It would probably cost me the business. They’ll eat anything they can get in their mouths, to the demise of so many of our other game fish.”

So that’s the economic side of the story. But what if we told you there’s more at stake here than dollars and cents.

“In terms of environmental impact, the Asian carp have the potential to seriously disrupt the Great Lakes ecosystem.”

That’s Marc Gaden with the Great Lakes Fisheries Commission. He says there are already a lot of pests in the Lakes.

“There are 180 non-native species in the Great Lakes, many of which came in accidentally. Precisely two of them can be controlled. That’s it. So that’s why biologists and others are very, very concerned about the Asian carp. Once they get in, the cat’s out of the bag.”

Asian Carp were first brought to the states by Southern catfish farmers. The carp escaped the South in the 1990s because of flooding and have been making their way north ever since. These fish are huge. They can grow to four feet and weigh up to 100 pounds, and they reproduce like crazy. In some areas, they reproduce so much that by weight they account for more than 90 percent of the fish in the Mississippi River system.

So you can see why people around the Great Lakes don’t want them.

That’s why Gaden and a lot of other scientists say we should somehow block the man-made canal that connects the big rivers to the Great Lakes for barges carrying cargo.

“We need to be open to saying, just because we’ve been moving goods on the canal by barge for decades and decades, doesn’t mean we need to continue to do it that way. Is there a better way to do it? Can we shift it to rail?”

Gaden and others have been arguing for 15 years to get some kind of permanent barrier built in order to stop invasive species from moving from one ecosystem to another.

“The government agencies that are responsible for doing things on that canal are not moving at the speed of carp, they’re moving at the speed of government. And we don’t have a minute to spare.”

That’s because new DNA tests suggest that Asian carp have moved well beyond the electric barrier meant to keep them out of Lake Michigan.

For The Environment Report, I’m Jennifer Guerra.

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More Beer, Less Water

  • Photo by Tomasz G. Sienicki. (Wikimedia Commons)

Beer is mostly water, but brewing beer takes even more water. The brewing industry is working to find ways to use less water. Chuck Quirmbach reports that for some companies it’s just a matter of becoming more environmentally friendly. For other companies, future water restrictions are forcing them to think about water efficiency.

Transcript

Beer is mostly water, but brewing beer takes even more water. The brewing industry is working to find ways to use less water. Chuck Quirmbach reports that for some companies it’s just a matter of becoming more environmentally friendly. For other companies, future water restrictions are forcing them to think about water efficiency.

(ambience)

Step into a sports bar and ask a table of guys drinking beer what they think about using less water to brew beer… and you’ll probably get a lot of confused looks.

“No, I don’t think about it at all. I guess you’re the first person to ever even bring it up. that’s why i don’t even think about it (laughter)

But the brewing industry says it’s not laughing about trying to conserve water.
The industry standard is that it takes about four barrells of water to make one barrel of beer, and that’s if you don’t factor in things like the water used to grow hops and other crops used in the brewing process.

Beermaking giant Miller-Coors says it’s trying to get its water-to-beer ratio down to three-point-five to one within six years.

(ambience)

So at miller brewing’s birthplace in milwaukee. ..the firm has a research lab working on water efficiency.

“And this is a pump turning on…”

Troy Rieswek manages the testing lab.

“And it’s circulating caustic as the background…the pump…circulating caustic.”

Rhyswek is showing how Miller-Coors is testing ways to clean stainless steel brew vats with less water. He says if they can find a solution, it will help the company’s bottom line.

“So if we can save the amount of water we use…and also the amount of chemical we use. Ultimately don’t lose down the drain… that goes a long way in saving water and also wastewater sending to the sewer.”

Miller-Coors is also trying to use less water as it rinses plastic bottles before they’re filled with beer.
smaller brewing companies and even brewpubs say they’re also trying to conserve water. Brewers recently held a conference on water conservation. The event also attracted the professionally curious, like Thomas Pape.

“I kind of invited myself. I heard about this conference…and uh… I had just gone through with my beer club trying to convince steps for them to save water in their homebrewing.”

Pape is with the alliance for water efficiency. That’s a non-profit group that promotes efficient and sustainable use of water. Pape says the brewers seem serious about conservation, because water costs are rising.

“It’s still a bargain. When you think you still get water from the tap perfectly clean and treated for less than a penny a gallon, but water costs are going up, and they’re going to go up.”

At the conference, a Wisconsin state regulator told the beermakers they need to plan for new requirements for water conservation. Todd Ambs says in the Great Lakes states, where a lot of beer is brewed, a recently passed water agreement puts in tough language.

“And if you’re asking for a new or increased quantity of water out of the Great Lakes basin, and you can’t demonstrate that you’re using your current water supply efficiently, and that you’re going to use that new water supply efficiently, you won’t get the water.”

(sports bar ambience)

If the government holds to that tough line, beer makers that want to grow may have no choice but to conserve water. and that would be fine with sports bar customer Jeff King who says he does care about conservation.

“I might not be as aware of it or look into it exactly, but anything you can do to help out is definitely good.”

King says he’d even pay more for beer if a brewing company is good at conserving water as long as it’s still a quality brew.

For the environment report, I’m Chuck Quirmbach.

Farmland Back Into Wetland

The government’s Conservation Reserve Program pays farmers to return a
certain amount of agricultural fields to their original wetlands. As Tanya
Ott reports, a new study finds those efforts might be paying off:

Transcript

The government’s Conservation Reserve Program pays farmers to return a certain amount of agricultural fields to their original wetlands. As Tanya Ott reports, a new study finds those efforts might be paying off.

Research ecologist Hardin Waddle and his colleagues at the U-S Geological Survey wanted to know how frogs and toads were faring in ditches and creeks on farmland versus restored wetlands. So they suited up and set out into the Mississippi Delta on a frog hunt.

“We went out there at night with flashlights and we captured any individual we saw. We measured them and we looked for any kind of growth abnormalities or things like that.”

They didn’t find disease, but they did discover significantly more frogs and toads on the marginal farmland that had been restored to wetlands. Waddle says amphibians are great indicators of the overall health of wetland conditions. So that means restored wetlands can be just as good for frogs and toads as preserved wetlands.

For the Environment Report, I’m Tanya Ott.

Counting the Fish in the Sea

  • Researchers at the Census for Marine Life have spent the past decade counting fish. (Photo courtesy of NOAA)

You’ve heard there are lots
of fish in the sea, but nobody
knows exactly how many. That’s
what a project has been trying
to find out. Samara Freemark reports the results
will be out soon:

Transcript

You’ve heard there are lots
of fish in the sea, but nobody
knows exactly how many. That’s
what a project has been trying
to find out. Samara Freemark reports the results
will be out soon:

Researchers at the Census for Marine Life have spent the past decade counting fish. They want to get as accurate a count as possible of how many animals are in the sea.

The project is based at the University of Rhode Island, but 2000 scientists around the world are collaborating.

Darlene Crist works with the Marine Census. She says the project used a huge range of tools to sample fish populations: electronic tags, robots, cameras– as well as some pretty unconventional research methods.

“We’ve used old tax records, ship logs, even restaurant menus.”

Now Crist say they’re done counting and they’re starting to crunch numbers.

Researchers say the data will serve as the first baseline measure of life in the ocean. They hope it will help policymakers better manage the fish stocks that remain.

Full results will be available this fall.


For The Environment Report, I’m Samara Freemark.

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Wrangling Runoff

  • So every year, dozens of homes are flooded. That's in part because 28% of the entire watershed in this region around Washington DC is paved over. (Photo by Sabri Ben-Achour)

Stormwater runoff can be one
of the main ways that urban
areas create pollution. In
some cases it can dramatically
suffocate marine life. It
can also cause flooding. One
small town in Maryland is on
the receiving end of its region’s
runoff. As Sabri Ben-Achour reports,
it’s trying to set a national
example with its approach to
solving the problem:

Transcript

Stormwater runoff can be one
of the main ways that urban
areas create pollution. In
some cases it can dramatically
suffocate marine life. It
can also cause flooding. One
small town in Maryland is on
the receiving end of its region’s
runoff. As Sabri Ben-Achour reports,
it’s trying to set a national
example with its approach to
solving the problem:

Anytime it rains, the ground in Edmonston, Maryland quickly becomes waterlogged. Here’s Brigitte Pooley and her mother Maggie.

“When the river gets flooded with rainwater, for example, if it continued raining like this, it literally comes up all over, and then all the debris that comes from upstream, municipalities upstream, as the water recedes it just leaves milk cartons and trash, tires everywhere.”

Adam Ortiz is the mayor of this low income, low-lying town of 1400. He says his town is a trap for stormwater runoff from all the paved surfaces in the area.

“At least 30 to 56 homes would be under water at least once a year because of flooding from parking lots, highways, shopping centers and streets.”

So every year, dozens of homes are flooded. That’s in part because 28% of the entire watershed in this region around Washington DC is paved over. But flooding isn’t the whole story.

“If a watershed is more than 10% paved you’re going to have impaired water quality.”

Jim Connolly is Executive Director of the Anacostia Watershed Society. He says stormwater smothers or poisons aquatic life, and causes erosion.

“It’s all the oil or grease that comes out of cars, the trash we throw in the streets, the pesticides we use in our lives. Stormwater is the base cause of all the problems in our urban rivers.”

So the town of Edmonston decided to do something about it. A new pumping station is keeping floods down, but the town wants to be a model for how to prevent stormwater runoff in the first place. So with federal Recovery Act money, the town is rebuilding its main street from top to bottom. Mayor Ortiz sidesteps a bulldozer to show off what’s now a construction site on the roadside.

“This is a bio-retention treebox, so instead of the water going directly into the drains and into the river, it will go directly into this bed.”

In that bed will go native trees grown in gravel and compost – to absorb and filter water. The street itself is going to be repaved with permeable concrete to let some water pass right through.

“The water’s going to filter naturally into the water table, so everything will be taken care of onsite as it was a few hundred years ago.”

85-90% of run off will be trapped by this system. But what about cost? Dominique Lueckenhoff directs the Office of State and Watershed Partnerships for this region at the Environmental Protection Agency.

“It is not more costly with regards to the refurbishing and additional greening of this street.”

But this wouldn’t have happened had this community not organized to fight for it. Allen Hance is with the Chesapeake Bay Trust. He says that to have a major impact, many more communities will have to follow Edmonston’s example.

“We want this to become a matter of course in how people build streets, and how they design streets.”

Edmonston will be putting all of its designs, and experiences online for other communities to use as a blueprint.

For The Environment Report, I’m Sabri Ben-Achour.

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Greenovation: Eco-Certified

  • When doing home improvement projects, WaterSense, EnergyStar, GREENGUARD, and FSC certifications are some to keep an eye out for. (Photo by Michelle Miller-Freeck, courtesy of FEMA)

When you’re planning a home
improvement project, you can
be overwhelmed with decisions
about the right materials, the
right quality, and the right
design. Trying to keep it eco-
friendly on top of everything
else just adds to the confusion.
Lester Graham reports it can be
as simple as finding a label:

Transcript

When you’re planning a home
improvement project, you can
be overwhelmed with decisions
about the right materials, the
right quality, and the right
design. Trying to keep it eco-
friendly on top of everything
else just adds to the confusion.
Lester Graham reports it can be
as simple as finding a label:

Julia Weinert and her boyfriend like the idea of making their place nice, but even something as simple as painting causes concerns.

JW: “We want to support environmentally friendly options and we just don’t want to be smelling it for three days out and have to be running the fans. We just want it to be convenient and we think it would be an easy thing to do.”

LG: “Well, you’re in luck. We’re at the local Home Depot and we just happen to have Greenovation.TV’s Matt Grocoff here. Matt, you’ve got some advice for her.”

MG: “And it’s really, really simple. When you’re trying to find a paint that’s healthy for you or another product, you shouldn’t have to be a chemist when you go to the store. There’s a really simple thing you can look for. Just look for the simple GREENGUARD label. GREENGUARD is an independent organization that lets you know with a simple label that that product is safe for you.”

So, none of the really strong paint smells that mean polluting chemicals are being released. GREENGUARD Environmental Institute sets indoor air standards for products and buildings. Julia and I sniffed a can of paint WITH the GREENGUARD label, and then one without.

LG: “I’ll let you sniff first.”

JW: Okay. Oh! Yeah! Oh my gosh! That is ridiculous. I mean, it smells so much stronger than this one. You can’t even smell that one compared to this one.”

A gallon of paint with the GREENGUARD label DOES cost a few dollars more, maybe as much as ten bucks.

Matt then herded us to another part of the store, the plumbing section, where Julia and I were confronted by all kinds of shiny chrome and brass faucets.

JW: “There’s a whole wall, a whole aisle of faucets here and I just don’t know which ones to look for.”

LG: “So, Matt. You got any fancy labels here?”

MG: “Absolutely. Again, if you’re looking for that eco-friendly option, a way to save yourself some money and some water, it’s simple. Just look for the WaterSense label. The EPA does EnergyStar labels for appliances. The EPA also does WaterSense label for plumbing fixtures.”

WaterSense means the fixture – whether a faucet, shower head or toilet – will use less water but still works well.

As we wandered over to the lumber section of the store, Matt told us the last label he wanted to show us is the most ignored label – and it might just be the most important one.

MG: “FSC stands for the Forest Stewardship Council. And what that means is they’ve made a commitment that they’re not going to be tearing down forest and clear-cutting them in order for you to build some bookshelves in your home. This is one of the biggest causes of greenhouse gases is that we don’t have these forests capturing this carbon any more. Instead of having to have a PhD in forest management, you can just simply look for a piece of wood that has an FSC label on it.”

So, labels. Julia says, works for her.

JW: “It’s going to be great, taking my boyfriend around the store and showing him all these cool things I can get to make our home improvements a little more cheap and environmentally-friendly.”

LG: “Alright remind me, go over this again. What am I supposed to be looking for?”

MG: “It’s very simple. If you’re looking for paint, look for GREENGUARD. For plumbing, WaterSense. For lumber, FSC, Forest Stewardship Council certified.”

LG: “That’s Matt Grocoff, Greenovation.TV. Thanks again, Matt.

MG: “Lester, it’s always a pleasure. Thank you.”

For The Environemnt Report, I’m Lester Graham.

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Coal Ash Contamination

  • 2.6 billion pounds of arsenic and other toxic pollutants flooded over nearby farmland and into the river. (Photo courtesy of the Tennessee Department Of Health)

When a dam broke a year ago in Kingston,
Tennessee, the town experienced one
of the biggest environmental disasters
in US history. Billions of gallons
of waterlogged coal ash from a nearby
power plant streamed into the Emory
River. Tanya Ott reports
the contamination was even greater
than originally thought:

Transcript

When a dam broke a year ago in Kingston,
Tennessee, the town experienced one
of the biggest environmental disasters
in US history. Billions of gallons
of waterlogged coal ash from a nearby
power plant streamed into the Emory
River. Tanya Ott reports
the contamination was even greater
than originally thought:

2.6 billion pounds of arsenic and other toxic pollutants. That’s how much
contamination flooded over nearby farmland and into the river.

That comes
from a report by the Environmental Integrity Project.

Eric Schaeffer is the
project’s Executive Director and a former official with the Environmental
Protection Agency. He says 2.6 billion pounds is more than the total
discharges from all U-S power plants last year.

“The toxic metals, once they get into the environment,
and especially once they get into sediment, are notoriously difficult to
clean up.”

Difficult and expensive. The Tennessee Valley Authority puts the price tag
at about a billion dollars.

The EPA was supposed to propose tougher
disposal standards for toxic ash by the end of 2009. But the agency delayed
that decision.

For The Environmental Report, Im Tanya Ott.

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