A Safer Stain-Resistant Chemical?

Chemists at the University of North Carolina have developed a new material for making stain resistant coatings that they say will not contaminate the environment. The Great Lakes Radio Consortium’s Fred Kight has the story:

Transcript

Chemists at the University of North Carolina have developed a new material for making stain resistant coatings that they say will not contaminate the environment. The Great Lakes Radio Consortium’s Fred Kight has the story:


The problem with many stain resistant coatings on clothing and paper goods is that they gradually breakdown into C8, a compound that an Environmental Protection Agency advisory board terms a “likely carcinogen.”


Chemistry professor Joseph DeSimone and his colleagues at the University of North Carolina at Chapel Hill have come up with something they’re calling “C4 plus.” The new material uses a type of fluorocarbon which is less likely to degrade.


Paul Anastas is director of the Green Chemistry Institute and he says C4 plus is just what the doctor ordered.


“What Joe DeSimone is doing is designing our next generation of substances so that they are not going to be harmful to human health and the environment.”


Anastas says manufacturers could switch to the “greener” ingredient very soon.


For the GLRC, I’m Fred Kight.

State Tops List in Carcinogenic Air Emissions

New numbers released by the government show one state pollutes more than any other in the region when it comes to toxic chemicals released into the air. The Great Lakes Radio Consortium’s Mark Brush reports:

Transcript

New numbers released by the government show one state pollutes more than any
other in the region when it comes to toxic chemicals released into the air.
The Great Lakes Radio Consortium’s Mark Brush reports:


In the eight states surrounding the Great Lakes, Indiana tops the list for
cancer-causing chemicals released into the air. The EPA’s Toxic Release
Inventory shows that 34 million pounds of these chemicals were released in 2002.
Indiana is responsible for 8.7 million pounds of that. That’s more than one
quarter of the entire region’s release of that kind of pollution.


Karen Teliha is with the Indiana Department of Environmental Management.
She says these chemicals are mostly released in the northern counties of the
state:


“Our number one carcinogenic chemical that’s released is Styrene. And it’s one
that we’ve been working on with the fiber reinforced plastics industry, and in
Indiana that’s mainly RV and boat manufacturers.”


Teliha concedes that the amount is high, but she says it’s been declining over
the last five years. Environmentalists say the state isn’t doing enough to curb
the release of these cancer-causing chemicals.


For the Great Lakes Radio Consortium, I’m Mark Brush.

Related Links

Ice-Breakers Finish Up Duty

  • The Coast Guard cutter Sundew was built in 1944 in Duluth as a "buoy tender." In 1979, the Coast Guard had the ship's hull reinforced and beefed up its engine so the ship could double as an icebreaker. Photo by Chris Julin.

Cargo ships are moving on the Great Lakes, but Coast Guard icebreakers are still on duty on the north side of the Lakes. The Coast Guard’s massive icebreaker, the “Mackinaw,” smashed ice from its home in Michigan all the way across Lake Superior to Duluth. And the Coast Guard cutter “Sundew” has been chipping away at the ice in Duluth for weeks. The Great Lakes Radio Consortium’s Chris Julin has this report:

Transcript

Cargo ships are moving on the Great Lakes, but Coast Guard icebreakers are still on duty on the
north side of the Lakes. The Coast Guard’s massive icebreaker, the “Mackinaw,” smashed ice
from its home in Michigan all the way across Lake Superior to Duluth. And the Coast Guard
cutter “Sundew” has been chipping away at the ice in Duluth for weeks. The Great Lakes Radio
Consortium’s Chris Julin has this report:


There’s a whiff of spring in the air in lots of places, but parts of Lake Superior are still covered
with ice. Cargo ships are leaving their berths where they spent the winter. But when the first
ships got ready to go, the ice on the Duluth Harbor was still two feet thick. That’s thick enough to
keep a ship locked in place.


The Coast Guard cutter Sundew carved a path through the ice so ships could leave.


(sound of chop, splash)


As the Sundew churns away, slabs of ice tip on edge under the bow. Each slab looks like the
floor of a single-car garage turned on edge. The Sundew will cut a swath several miles long, and
then come back along the same path. With each pass, the shipping lane gets a little bit wider.


Bev Havlik is the commanding officer on the Sundew.


“We’re taking out just little shaved bits of it at a time to make the ice chunks smaller. It’s like
sawing a log, just shaving off a bit of it at a time.”


“The Sundew wasn’t built as an icebreaker. It’s usual duty is tending buoys. The ship places, and
maintains about 200 navigational buoys on Lake Superior. But a couple decades ago, the Sundew
got some extra steel added to its hull, and a new, bigger engine. Since then, it’s done double duty
as an icebreaker.”


Commander Bev Havlik says the Sundew slices through thin ice like a butter knife. But in
thicker ice, like this stuff, the hull actually rides up on top of the ice and pushes down through it.
That’s why there are three mini-van-sized chunks of concrete on the ship’s deck. Each one weighs
12,000 pounds.
“It helps us bite into it with the bow, instead of riding up too high.” It keeps the weight down
forward more.”


A little bit like putting sandbags in the back of your pickup in the wintertime?


“It’s a similar sort of principle, right. It gives you the bite you need.”


Icebreaking is serious business. It gets ship traffic moving weeks before the ice melts. But
beyond that, Bev Havlik says it’s really fun.


“This is awesome. It’s the only job that I’d ever had where they pay us to come out and break
something.”


The Sundew is 180 feet long. That’s about the length of 10 canoes lined up end to end. It has
about 50 crew members. One of the junior crew members is usually at the wheel. The real
“driver” is an officer who’s standing 20 feet away, out on the deck through an open door. The
officer adjusts the ship’s speed, and calls out a steady stream of steering commands to the
“helmsman” — that’s the guy at the wheel.


(sound of Helsman)


“Right five-degrees rudder … steady as she goes, aye.”


Ensign Jason Frank is about to take his turn driving the Sundew. He wears a big rabbit fur hat
when he’s out on the deck driving the ship.


“We actually have face masks and goggles for when it really gets cold. It gets so cold out here
sometimes it feels like your eyes are going to freeze out, or something.”


(natural sound)


Jason Frank is halfway through his two-year stint on the Sundew. Then he’ll be stationed
somewhere else, and the Sundew will be removed from service. The ship was built in Duluth in
1944, and it’s retiring next year. Jason Frank wanted to work on the Sundew because aren’t many
ships like this still in service. On newer vessels, the officer driving the ship stands inside. And
here’s something right out of the movies – the Sundew has a big, brass steering wheel.


“Whereas with the new ships, most the new ships have just a little joystick. It’s very similar to
like a joystick you’d have maybe when you’re playing a computer game or something. All you
have to do is turn that joystick and the computer tells the rudder what to do. We’re actually
maneuvering the throttles, we’re actually driving. With the new ship, basically it has an
autopilot.”


The ice is melting in the Duluth Harbor, but it still clumps together on windy days and makes
trouble for ships. The Coast Guard cutter Sundew will stay on ice-breaking duty until the
weather warms up, and a good southwest wind pushes the rest of the ice out of the harbor into
Lake Superior.


For the Great Lakes Radio Consortium, this is Chris Julin.


(sound fade)

Epa’s Dioxin Report Flawed?

Within the next few weeks the U.S. Environmental Protection
Agency is scheduled to release a controversial report on the health
effects
of dioxin. The Great Lakes Radio Consortium’s Lester Graham reports…
some scientists think the draft of the report is flawed:

Scientists Push for Tougher Arsenic Standards

Groundwater in some Great Lakes states has been found to meet or exceed
acceptable levels of naturally occurring arsenic. Growing concern about
the health effects of arsenic consumption recently prompted the U-S
Academy of Sciences to recommend that the federal government create more
stringent standards for human consumption of arsenic. The Great Lakes
Radio Consortium’s Marisa Helms has the story:

Canada Tests Landfills for Gas Levels

Environmentalists in Ontario, Canada are demanding nationwide testing
of the air around landfills. The action was sparked by a news report
that claimed the Ontario Ministry of Environment halted real estate
development near one Toronto area landfill over concern about vinyl
chloride levels. The Great Lakes Radio Consortium’s Wendy Nelson
reports: