Paint Regs Better for Environment?

  • Most paints are still high in VOCs – volatile organic compounds (Source: DanielCase at Wikimedia Commons)

When it’s time for a new
coat of paint, you might want a paint
that doesn’t smell so bad that it
leaves your head spinning. More states
are shaking up paint laws – and forcing
companies to roll out paints that aren’t
as bad for the environment. But some
people question if they will work as well
as the old stuff. Julie Grant reports:

Transcript

When it’s time for a new
coat of paint, you might want a paint
that doesn’t smell so bad that it
leaves your head spinning. More states
are shaking up paint laws – and forcing
companies to roll out paints that aren’t
as bad for the environment. But some
people question if they will work as well
as the old stuff. Julie Grant reports:

Matt Testa started painting for his family’s real estate
business when he was a kid. He remembers his parents
worrying that all the chemicals in the paint would ignite a fire
– so they turned off appliance pilot lights before painting a
kitchen.

(sound of painting)

Today, as a builder and general contractor, Testa says most
paints are still high in VOCs – volatile organic compounds.
Even though a lot of people don’t like it.

“Well, when we’ve used some high VOC products, of course
there’s occasional dizziness on large commercial jobs.
We’ve had to clear buildings at times because of people
reporting headaches and other things with the fumes that
were being given off.”

Testa says you can almost taste those chemicals in your
nose and mouth hours after painting. But the VOCs don’t
just affect painters. When you open a can of paint, or
primer, or wood stain, the chemicals get into the air – and
cause ozone pollution, which contributes to smog.

“When you do the math, they’re talking about a quarter
pound per gallon. And you think of the millions and millions
of gallons of paints that are used, you’re talking about a
huge amount of VOCs.”

In recent years, states on the east and west coasts have
started cracking down on paint makers. Smoggy southern
California has the toughest laws against VOCs in paints.
The Northeast has also forced manufacturers to reduce their
chemical load.

And now tougher paint laws are spreading to states in the
middle of the country. Ohio, for instance, has had a tough
time meeting federal clean air standards. It’s hoping that
stirring up the paint laws will make a difference.

(sound of paint store)

That’ll mean changes at the store. When you buy paints,
primers, stains – they will be based less on oil – and more
on water.

Steve Revnew is marketing director for Sherwin Williams –
and its 3,300 stores nationwide. Walking around one of his
Ohio stores, he says they have to roll out a new line of
products.

“For example, some of the oil based stains, wiping stains
that you traditionally would use on your wood work and
those types of things, as they’re known today, that
technology will no longer be available.”

Companies such as Sherwin Williams have seen the
chemical limits coming for many years. Revnew says
they’ve developed new stains, paints and enamels with
fewer harsh chemicals – using new resin and polymer
technology.

He picks up a can of enamel – “In 2009, we’ll be introducing
a whole new product line that is VOC compliant. It will still
provide you the hard, durable finish for metal, wood,
concrete – those types of things. Only it will be VOC
compliant.”

The changes have some professional painters in the store
concerned. They worry that water-based paints and stains
won’t coat as well or last as long as the oil-based coatings.

Now that contractor Matt Testa has kids of his own, he’s glad
VOCs are being brushed aside. But if reducing the
chemicals means things need to be re-painted more often,
he says the changes won’t do anything to improve air
quality.

“Yeah, if you have to go back and repaint it, you’re really
going to leave a bigger footprint environmentally from the
truck trips, the amount of the paint you put back up, all the
delivery of that paint, etc.”

Testa says consumers will have to see for themselves if
these new, environmentally friendly products work as well as
the higher VOC paints.

For The Environment Report, I’m Julie Grant.

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Major Dock Corrosion Stumps Officials

  • The Duluth Seaway Port Authority's bulk cargo dock is typical of many in the port. Officials are troubled by corrosion appearing on the docks in the harbor - the steel is corroding much faster than normal. (Photo by Bob Kelleher)

Corrosion is eating away at the steel walls that hold one of the Great Lakes’ busiest harbors together. The corrosion is unlike anything known to be happening in any other Great Lakes port. But other port officials are being encouraged to take a closer look at their own underwater steel. The Great Lakes Radio Consortium’s Bob Kelleher reports:

Transcript

Corrosion is eating away at the steel walls that hold
one of the Great Lakes’ busy harbors together. The
corrosion is unlike anything known to be happening in
any other Great Lakes port. But other port officials
are being encouraged to take a closer look at their own
underwater steel. The Great Lakes Radio Consortium’s
Bob Kelleher reports:


Some kind of corrosion is eating away at the Duluth
Seaway port’s docks. The docks are those long
earth-filled metal rectangles where ships from around
the world tie up to load and unload. Those docks are
lined with sheets of steel, and the steel is rusting
away. Jim Sharrow is the Duluth
Seaway Port Authorities Facilities Manager.


“It’s corroding quickly – much faster than people expect
in fresh water. And our main concern is that we’ll lose
the integrity and the strength of the dock long before
expected, and have to do steel replacement at $1,500 or
more per lineal foot, much earlier than ever would have
been expected.”


Corrosion should be a slow process in Duluth’s cold
fresh water. But, Sharrow says, there’s evidence it’s
been happening remarkably quickly for about thirty years.


“What we seem to see here is corrosion that started in
the mid 1970s. We have steel that’s 100 years olds
that’s about as similarly corroded to steel that is 25
to 30 years old.”


It’s a big problem. There’s about thirteen miles of
steel walls lining docks in the harbor that serves
Duluth, Minnesota and Superior, Wisconsin. There’s half
again as many feet of wooden docks, held together with
steel pins. There’s corrosion on the legs of highway
bridges and the giant
steel ore docks that ship millions of tons of taconite
– a type of iron shipped to steel mills in Gary,
Indiana and Cleveland, Ohio.


“We characterize this as a 100-million dollar problem in
the harbor. It’s a huge problem, and what is so odd
about this is that we only see it happening in the
navigational area of the Duluth-Superior Harbor.”


The harbor links the St Louis River with Lake Superior.
Go a few miles up the river and there’s little corrosion
. So it doesn’t seem like the problem’s there. But, back
in the harbor, at the current rate of corrosion, Sharrow
says, the steel will fail quickly.


“I figure that in about 10 years at the current rate,
we will have to start replacing steel.”


“Particularly marginal operators could decide rather
than repair their docks it would be better for them to
go out of business, and we’re hoping that that isn’t
the case here.”


While the cause is a mystery, there’s no shortage of
theories. It could have something to do with stray
electrical voltage; water acidity; or the kinds of
steel manufactured in recent years. Chad Scott
discovered the corrosion in the late 1990’s. He’s an
engineer and a diver. Scott suspects
a micro-biological connection. He says there might be
something growing in small round pits that form on the
steel.


“We cleaned up the water. That’s the main thing –
that’s one of the main changes that’s happened since
the 70s, is we’ve cleaned up our water. We’ve cleaned
up our harbor, which is a good thing. But, when we
cleaned things up we also induced more dissolved oxygen
and more sunlight can penetrate the water, which tends
to usually promote more growth – more marine
microbiology growth.”


A team of experts met in Duluth in September to share
ideas. They came from the U.S. Navy, The Army Corp of
Engineers, and Ohio State University. And they agreed
there’s something odd going on – possibly related to
microbes or water chemistry. They also recommend that
other Great Lakes ports take a closer look at their
underwater steel. Scott says they at least helped
narrow the focus.


“We have a large laundry list right now. We want to
narrow that down and try to decide what is the real
cause of this corrosion. And these experts, hopefully,
will be able to get us going on the right direction,
so we can start doing testing that will identify the
problem.”


With the experts recommendations in hand, port
officials are now planning a formal study. If they
do figure out the cause, then they’ve got to figure
out how to prevent it. They’re in a race with
something, and right now they don’t even know with
what.


For the Great Lakes Radio Consortium, I’m Bob Kelleher.

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