A company is using waste from
coal-burning power plants to
make bricks. The firm hopes
to reduce the amount of coal
ash sent to landfills, and,
at the same time, cut the amount
of energy used to make bricks.
Chuck Quirmbach reports:
Transcript
A company is using waste from
coal-burning power plants to
make bricks. The firm hopes
to reduce the amount of coal
ash sent to landfills, and,
at the same time, cut the amount
of energy used to make bricks.
Chuck Quirmbach reports:
The company, Calstar, says it wants to open several U.S. plants which would use fly ash in making bricks for construction and paving. The California firm says its method uses far less energy that traditional clay bricks that have to be heated at high temperatures.
Luke Pustejovsky is a Calstar executive. He insists the quality of fly ash brick meets industry standards.
“We spent 18 months and millions of dollars on durability testing with our own labs, with outside third party labs, and this is a brick that’s built to last.”
But a trade group, the Brick Industry Association, is cool to fly ash brick. The group says the product has not yet met the test of time. The group is concerned any problems that come up could discourage customers from using brick.
Coal ash is sometimes used as an ingredient in concrete blocks (Photo source: Skepticsteve at Wikimedia Commons)
For decades coal burning power plants have dumped coal ash into landfills or ponds next to the plants. Tamara Keith reports environmental groups say that’s more dangerous that previously known:
Transcript
For decades coal burning power plants have dumped coal ash into landfills or ponds next to the plants. Tamara Keith reports environmental groups say that’s more dangerous that previously known:
A new report from the Environmental Integrity Project and Earthjustice uses data from the US Environmental Protection Agency – including a study that had been kept quiet since 2002.
Among the findings, people who live near coal ash storage ponds that are unlined, and who get their drinking water from a well, have a 1 in 50 chance of getting cancer from arsenic contamination.
Lisa Evans is an attorney with Earthjustice.
“It by far presents the largest risk to human health and the environment and there’s no reason to manage the waste in this way.”
The groups are calling for these storage ponds to be phased out and cleaned up in the next 5 years.
The EPA says new regulations are coming soon.
Power companies are willing to stop using storage ponds – but don’t want the coal ash classified as toxic. That would make disposal more expensive.
Cement kilns produce mercury, which gets into the fish we eat making it unsafe (Photo courtesy of the US Fish and Wildlife Service)
After years of urging, the US Environmental Protection Agency is proposing regulations to cut down on pollution from cement kilns. Lester Graham reports:
Transcript
After years of urging the US Environmental Protection Agency is proposing regulations to cut down on pollution from cement kilns. Lester Graham reports:
Cement – the stuff used to make concrete – is made by baking limestone and other ingredients at really high temperatures in huge coal-burning ovens.
Burning the coal and baking the stone both release mercury. The mercury gets into the food chain and contaminates fish.
Mercury is a neuro-toxin, so eating contaminated fish can cause health problems, including IQ loss.
For 20 years Congress and the courts have been telling the EPA to do something about mercury pollution from cement kilns.
Jim Pew is a staff attorney with Earth Justice, an environmental group. It’s sued the EPA over the issue.
“The government response until now has not been to try to get mercury under control, since everybody agrees it’s a problem. The response has been to tell people ‘mercury is out there, so don’t eat the fish.’”
Under the EPA proposal, cement kilns would have to clean up the mercury and other pollution emitted from their smokestacks.
Artist Christopher Griffin, the owner of the house, uses a long
smooth bone to draw a picture after each swipe of the trowel
(Photo by Karen Kelly)
(Photo by Karen Kelly)
(Photo by Karen Kelly)
Sometimes cities can seem like drab, impersonal places. But every once in a
while, you see a building that stops you in your tracks. Karen Kelly tells a story about a house designed to do just that:
Transcript
Sometimes cities can seem like drab, impersonal places. But, every once in a
while, you see a building that stops you in your tracks. Karen Kelly tells a story
about a house designed to do just that:
(sound of construction and trucks)
When you first see it, you’re just not sure.
A two-story house is being covered with marks etched in concrete.
Is it intentional? Or just a layer of construction?
Then you see a large black figure on the west side of the house and realize- oh, it’s
a whale. Waves are etched in the concrete around it. Walk around the corner and
you see flocks of birds flying over roughly drawn buildings.
(sound of scraping)
And just past the birds, there are three men working silently on a platform. Two
are spreading layers of fresh concrete.
The third is artist Christopher Griffin, the owner of the house. He uses a long
smooth bone to draw a picture after each swipe of the trowel – and before the
concrete sets.
He says he has to work fast.
“They would scrape the mud on and I would be going around them, over top of
them, actually right behind their trowel and there’s no chance to stand back; there’s
no chance to second guess.”
Griffin has been a professional artist in Ottawa, Canada for almost twenty years.
Griffin’s motivation was simple: his house really needed a new exterior. But the
regular stuff that people put on their houses didn’t feel right to him.
Instead, he thought he’d try some drawings like he’d seen in a photo of mud huts in
Africa.
“It was irregular; it was organic; it wasn’t pristine; it wasn’t crisp; it wasn’t
heartless. And that sort of quality was something I was after.”
(sound of chatting and scraping)
But while Griffin had this vision of giant sunflowers and caribou, contractors had
no idea what he was talking about.
Several told him it couldn’t be done.
Dan Charette is part of a team that was willing to give it a try.
“It’s a fantastic opportunity to bring our craftsmanship to a different level. There’s
a whole other creative level to what we do here with constructive behaviors, so it’s
really a lot of fun.”
For instance, the contractors suggested adding fly ash to the cement. It’s a
byproduct of burning coal and it also makes the cement more elastic.
Griffin liked that it was more environmentally friendly.
He also recycled building materials and added solar panels. But usually that’s not
what people see.
He says what really makes him feel good is when people just stop and stare.
“Absolute strangers stopping their cars, getting out and having a look. There’s a
teenage skateboarder who stopped and said, ‘Wow, awesome house.’”
Griffin says, in that way, his house has become a public space.
In fact, he argues everyone’s house is a public space.
And he suggests people think about what they want their house to say to someone
walking by.
Later this year the Environmental Protection Agency is going to set court-ordered
standards for mercury pollution from cement kilns.
(Source: LinguisticDemographer at Wikimedia Commons)
The Environmental Protection
Agency is late in setting standards
for some smokestack emissions. Lester
Graham reports:
Transcript
The Environmental Protection
Agency is late in setting standards
for some smokestack emissions. Lester
Graham reports:
Maybe you’ve never seen a cement kiln. That’s where limestone and other materials
are baked using coal to make cement, used in concrete.
Later this year the Environmental Protection Agency is going to set court-ordered
standards for mercury pollution from cement kilns.
“It’s about time, isn’t it? I mean, the standards were due more than ten years
ago.”
That’s Eric Scheaffer. He’s with the Environmental Integrity Project.
The EPA had relied on self-reported estimates on mercury pollution from the cement
kilns. Turns out, after the EPA actually checked a few of the kilns, a lot of those
mercury pollution estimates were a little low.
“They’re now saying about 23,000 pounds a year. And that’s double the
previous estimates from EPA. So, the numbers are growing.”
Most states have issued advisories about mercury contamination of fish. Mercury
can cause neurological and developmental problems with fetuses and young
children.
For The Environment Report, this is Lester Graham.
Critics say the US Environmental Protection Agency caved in to pressure from the White House and the cement industry in formulating a new mercury emissions rule. Tracy Samilton reports the rule will let old plants pollute as much as ever:
Transcript
Critics say the US Environmental Protection Agency caved in to pressure from the White House and the cement industry in formulating a new mercury emissions rule. Tracy Samilton reports the rule will let old plants pollute as much as ever:
Mercury is a deadly toxin that can cause birth defects and other health hazards. The new rule restricts mercury emissions on new or updated cement plants. But old plants don’t have to clean up their mercury emissions.
Bill Freese lives near an older cement plant that has been emitting ten times more mercury than it was disclosing to regulators. Freese says he’s disgusted by the EPA’s decision. He’s also none too happy that the plant, which advertises its friendliness to the environment, hasn’t voluntarily reduced the emissions.
“They just refuse to do it because they’d rather not spend the money. As long as they can continue doing what they’re doing, why spend money to clean things up? And they call themselves stewards of our environment.”
Cement industry officials say mercury scrubbing technologies would cost too much, but promise voluntary reforms of some kind in the future.
The US EPA is reconsidering a decision to let cement plants off the hook when it comes to mercury emissions. Tests at several cement plants showed they were emitting up to ten times the mercury being disclosed. Tracy Samilton reports:
Transcript
The US EPA is reconsidering a decision to let cement plants off the hook when it comes to mercury emissions. Tests at several cement plants showed they were emitting up to ten times the mercury being disclosed. Tracy Samilton reports:
Cement plants emit mercury from both the coal they burn and from processing limestone, an ingredient of cement. But the EPA has never regulated the mercury emissions. The agency said it would be too costly for the industry. Cement manufacturers say they plan to voluntarily reduce mercury emissions over time.
But Michael Wall of the Natural Resources Defense Council says the EPA needs to exert control over the plants now.
“It would be as if we took a segment of the coal-fired power plant industry and just said ’emit mercury freely, we’re not going to do anything about it.’ That makes really bad policy and it’s really bad for our public health.”
An EPA spokesman says the agency is taking a second look at the issue, in light of stack tests showing some plants may have been grossly underestimating their mercury emissions.
Everybody's got a gutter... and they're part of the urban runoff problem. Rain picks up dirty soot and other chemicals from roofs and heads into the gutter. During storms, the dirty water rushes down the gutters and down streets into storm drains... and can pollute beaches, drinking water and wildlife habitat. (Photo by Shawn Allee)
The pervious pavement at the Chicago Center for Green Technology lets water seep into the ground instead of heading into the sewer drain. (Photo by Shawn Allee)
The rain swale near the parking lot at the Chicago Center for Green Technology is full of native plants that absorb water that would otherwise head into the storm water system. (Photo by Shawn Allee)
One of the ten threats to the Great Lakes identified by experts across the region is nonpoint
source runoff. It’s a catchall category for pollution that’s not being spewed from one identifiable
source. The federal government’s finding that rain washing off concrete and asphalt in cities and
suburbs poses as big a threat to the Great Lakes as waste coming out of a factory pipe. Shawn
Allee has a look at the government’s effort to cut water pollution by remaking the urban
landscape:
Transcript
We’re continuing our series on Ten Threats to the Great Lakes. The Great Lakes Radio
Consortium’s Lester Graham is our guide through the series. Today a look at a broad problem
with no simple solution:
One of the ten threats to the Great Lakes identified by experts across the region is nonpoint
source runoff. It’s a catchall category for pollution that’s not being spewed from one identifiable
source. The federal government’s finding that rain washing off concrete and asphalt in cities and
suburbs poses as big a threat to the Great Lakes as waste coming out of a factory pipe. Shawn
Allee has a look at the government’s effort to cut water pollution by remaking the urban
landscape:
(rain running into a sewer)
Water from a rain gutter is pouring into a nearby storm sewer drain. That protects property from
water damage and flooding. But at the same time, they pose an environmental problem for the
Great Lakes.
Roofs, streets and parking lots are made of hard materials like concrete or asphalt. During
storms, rain rushes off these surfaces into storm drains.
The problem is this: the runoff isn’t pure.
Brian Bell’s a storm water expert with the Environmental Protection Agency. He says rain picks
up pollutants on all those roofs and streets, things such as:
“Antifreeze from cars, motor oil, brake fluid, copper from the brake pads, cigarette butts from
trash, household hazardous waste, pesticides that may be overapplied.”
And for most sewer systems, that’s not the worst of it.
“The problem with storm water is, once its mobilized and goes into a storm sewer system, that
system does not treat the waste, so all of those things go to the local waterway untreated.”
In this region, runoff flows into the Great Lakes, where it pollutes beaches, drinking water, and
wildlife habitat.
To fight this, the EPA’s trying something new. It wants to make hard, urban landscapes softer.
The idea’s to replace concrete and asphalt with more soil and plants. That way, water can sink
into the ground and stay out of storm drains.
But how do you do that?
Well, the EPA’s working with places like the Chicago Center for Green Technology to show people
how. The city hopes residents and developers will use what they see here in their own projects.
(city sounds in)
Grace Troccolo’s guiding a tour of the facility.
First stop?
“Our parking lot is slightly pitched, so all of our rainwater flows off into these vegetated bioswales,
which when I’m not with people in the business, I call ‘ditch with plants.'”
The plants aren’t typical bushes or flowers. They’re mostly tall, prairie grasses native to the
Midwest. Their roots help water seep deep into the ground. The Center has several bio-swales,
and they all keep runoff on site and in the ground.
Another stop on the tour is a 40-foot section of the building’s roof. It’s covered with a matt of
short, tangled creeping plants. Grace explains why they’re here.
“So here we are at our green roof. Again, getting back to our issue of storm water management,
the city would like to see more vegetated surfaces and of course, in the city like Chicago there are
a lot of roof surfaces and so this section of the roof is designed to hold all of the rainwater that
falls on it during a one-inch storm.”
Again, the roof’s vegetation retains water and keeps it out of storm drains. Because of these
technologies, the building is an urban runoff success story.
All told, the Center releases less than half as much water to storm drains as similar buildings do.
The EPA wants the average home or business owner to follow suit, but price might keep that from
happening. Green roofs, for example, are more expensive than conventional ones.
But some observers say the biggest obstacles in fighting urban runoff are political. Stephen
Bocking teaches environmental policy at Trent University. He says the public’s used to pointing
fingers at a handful of big, industrial polluters.
People just aren’t used to seeing every house and business as a source of pollution.
“It’s much more difficult to deal with the problem when you’re talking about millions of separate
sources. People can’t just say well, it’s the job of industry or the job of the government to deal with
it. It’s the job of everyone to deal with it in some way.”
In other words, we’re all to blame.
Every new building in a city, or home in a subdivision, creates more hard surfaces, such as new
driveways, new parking lots and new roofs.
“It’s pretty hard to deal with a form of development which is intrinsic to our way of life. It involves
thinking about how we live our lives and how design and build our cities.”
Bocking says the EPA’s plan might not be enough to make up for all the roads and other hard
surfaces we’re building. He says, to succeed, we’ll need to change how we develop land.
There’s not much political support to stop that kind of development right now, so for the time
being, hard surfaces will continue to win out.
The EPA says tighter controls are coming for hundreds
of companies that burn hazardous waste. But the changes didn’t come without a fight. The Great Lakes Radio Consortium’s Chuck Quirmbach reports:
Transcript
The EPA says tighter controls are coming for hundreds of companies that burn hazardous waste, but the changes didn’t come without a fight. The Great Lakes Radio Consortium’s Chuck Quirmbach reports:
The new regulations apply to large boilers, incinerators, cement kilns, and other devices that burn hazardous waste. The EPA says it’s trying to reduce emissions of several toxic pollutants.
A few years ago, environmentalists won a legal fight to force tougher controls than the Clinton Administration had originally proposed. Earthjustice attorney Jim Pew says the EPA was told to do its job right.
“Now EPA really hasn’t done it right this time, but it’s done it better, and as the result of the work of environmental groups, we’re seeing less toxic pollution going into peoples’ homes and schools and communities.”
A group representing cement kiln owners says it’s generally satisfied with the new EPA rules, but warns that some kilns may have trouble reaching the tougher targets. The case could wind up back in court.
University of Buffalo researchers have developed a new technology that
could save taxpayers money on highway repair and weigh station expenses
it’s called "smart concrete." The Great Lakes Radio Consortium’s
Elizabeth Christensen reports:
Fly ash particles at 2,000x magnification.
