Tag: storm

Construction Sites Mucking Up Rivers

  • The EPA says sediment runoff rates from construction sites are typically 10 to 20 times greater than from farmland. (Photo courtesy of the National Centers for Environmental Prediction)

Some home builders say the housing market
is tough enough. They don’t need environmental
regulations that make it tougher on them. But
some “green” builders say the housing industry
can improve the environment, do the right thing
for communities, and still make money. Julie Grant
reports:

Transcript

Some home builders say the housing market
is tough enough. They don’t need environmental
regulations that make it tougher on them. But
some “green” builders say the housing industry
can improve the environment, do the right thing
for communities, and still make money. Julie Grant
reports:

Have you ever driven by a construction site and seen all that dirt? A lot of that dirt is washed off the site by
rainstorms and ends up in local creeks and rivers.

Russ Gibson is with Ohio Environmental Protection Agency.
He says that dirt kills aquatic bugs and fish.

The dirt covers up gravel bottom streams – that fills holes
where bugs want to live. If bugs can’t live it mucks up the
food chain. Gibson says fishermen know when this
happens.

“You’ll have some of the smaller fish and the bait fish, like
minnows and darters, will feed on the small bugs that live
there. If you don’t have bugs to feed the bait fish you don’t
have bait fish to feed the big fish.”

Beyond that, the silt from construction sites can also muddy
up where fish lay their eggs.

And enough construction dirt can fill a stream so much that it
can make flooding more of a problem.

So, how much dirt are we talking about?

The EPA estimates that 20 to 150 tons of soil per acre is lost
to storm water runoff from construction sites.

That means every time a new house is built, truckloads of
soil can wind up in local streams.

If a homebuilder pulled a truck up to a bridge and dumped a
load of dirt into a creek, people would scream. But because
construction site runoff is gradual and not as obvious,
builders get away with it.

Lance Schmidt is a builder. But he’s not your typical builder.
They used to call him a “tree-hugger builder.” These days
he’s seen as a trend setter.

Schmidt says nobody in the building industry is talking much
about construction silt.

“Believe me, stormwater’s not a fun issue to talk about. (laughs)”

But it’s one of the biggest pollution problems in creeks and
rivers.

Schmidt’s crew just dug a hole for the foundation of a small
house. He’s climbs up on one of four mounds of dirt. He
knows when it rains, some dirt can get washed away, and
end up in a nearby river. That’s why he puts up sediment
barriers. But most of the time no one checks to see if he
does.

“There aren’t any regulations as far as I know. I mean other
than if somebody was to complain.”

The Environmental Protection Agency in Ohio says it does
regulate construction sites. But, usually just the larger ones,
where there might be problems. The homebuilding industry
doesn’t really think it’s the problem.

Vince Squallice is director of the Ohio Homebuilders
Association.

“Construction and earth disturbing activities in construction is
not causing the siltation problem in Ohio.”

Squallice says farmers are mostly to blame for dirt runoff in
the rivers. It’s true that sediment runoff from farms is a huge
problem. But the EPA says sediment runoff rates from
construction sites are typically 10 to 20 times greater than
from farmland.

Squallice says builders already have to deal with too many
regulations such as setbacks from streams.

“Some of the regulations recommended to protect streams go
overboard in terms of environmental protection.”

Squallice says because of the housing bust, it’s a time to
help homebuilders, not enforce more environmental
regulations.

Builder Lance Schmidt says homebuilders need to look at it
a little differently. They can help solve a problem, keep
streams clean, and help cities with flooding problems.

“And that’s the avenue that I’ve decided to attack at. Rather
than attack the regulations, let’s sit back and find ways that
we can actually do this.”

Schmidt says there are lots of creative building ideas that
can reduce flooding, and improve the rivers for fish and other
wildlife. But in this competitive market, builders won’t do it
until everyone has to play by the same rules. And he
doesn’t expect that to happen without better enforcement by
regulators.

For The Environment Report, I’m Julie Grant.

Related Links

Landscaping to Slow Runoff

  • The bioswales are planted with species that are hardy and beautiful, like this snowberry. (Photo by Ann Dornfeld)

Some cities are looking at taking away parking
on residential streets and replacing it with shallow
ditches full of native plants that filter stormwater.
It’s a way to reduce the polluted runoff that flows
into lakes, rivers and the ocean. As Ann Dornfeld
reports, not everyone is thrilled with the idea:

Transcript

Some cities are looking at taking away parking
on residential streets and replacing it with shallow
ditches full of native plants that filter stormwater.
It’s a way to reduce the polluted runoff that flows
into lakes, rivers and the ocean. As Ann Dornfeld
reports, not everyone is thrilled with the idea:

We’re walking down a winding lane lined with maple trees, tall, dry grasses and
evergreens. Bright white snowberries dot the dark branches. It feels like a walk
in the country. But we’re actually admiring a big-city sewer system.

This little valley – a sort of shallow ditch – is called a “bioswale.” Its plants filter
out pollutants that run off the street. And special, thirsty soil helps the water
absorb into the earth. Sections of the street are narrowed to make room for the
bioswales, so some parking along the street is lost. But houses without
driveways get two parking spaces between the swales.

The bioswales have thick layers of native grasses, shrubs and other plants. It’s
kind of a wild, natural look. Debbie Anderson lives on a nearby street. As she
walks by the bioswale she says to her it just looks messy.

“We think it looked nice when it was first built, but it hasn’t continued to
look good, I don’t think. We moved out here because there was no
sidewalks and the streets were wide open and we like that. Lots of parking,
we can have lots of company. This way you can have, what, two people
that can come? That’s it! No. I don’t want it.”

That’s a pretty familiar argument to Bob Spencer. He’s with the City of Seattle’s
Public Utilities office.

“The big thing is the lack of parking. People really get into using these
street right-of-way shoulders as their personal parking spots.”

But not everybody thinks parking spots are more important than doing something
to reduce water pollution. Spencer says the neighbors on this street actually
competed with other blocks to get these bioswales. It’s free landscaping – and
the city even worked with each homeowner to choose plants that would blend
with their existing garden.

Spencer says the city’s traditional method of dealing with stormwater has washed
contaminants into a nearby creek.

“Well, in the surrounding streets around here, we have what’s called ‘gutter
and ditch’ drainage. And what happens is the water runs off the property
and the impervious streets and rooftops. And it enters a ditch and then
goes pell-mell screaming down to our local salmon-bearing creek, Piper’s
Creek.”

It’s not just Seattle’s creeks that are flooded with runoff. Untreated rainwater
flows straight into lakes and the ocean, polluting them. Cities across the country
are looking for ways to deal with toxic runoff like that.

Spencer says Seattle is pioneering
large-scale natural drainage. In other words, the rain is allowed to drain like it
does in the wilderness. The plant roots slow the water so it can absorb into the
earth. That helps prevent flooding. Pollutants like heavy metals, pesticides
and fertilizers are trapped in the soil, and some of them are broken down in these bioswales.

“So we’ve got a little bit more like a forested system in that we have a duff
layer that acts as a sponge.”

Spencer says the city hasn’t tested the water quality of the runoff that eventually
enters the creek. But he says the runoff has been slowed to a trickle.

“It infiltrates and holds and keeps here 99% of that runoff. So that’s a
pretty large flush of water that’s not entering the creek with this system.”

Officials in Seattle’s city government like the green look of the bioswales. And
they help the city meet federal pollution guidelines. City Council President
Richard Conlin says over the course of three bioswale projects, the city has been
able to lower the cost to about the same as conventional stormwater treatment.

Seattle’s newest bioswale system will be at the foot of Capitol Hill. That’s where
seemingly half of the city’s young people live, in blocks full of apartments,
nightclubs and parking lots.

“It’s actually the densest urban neighborhood west of Minneapolis and
north of San Francisco. So it has a lot of impervious surface.”

Stormwater from Capitol Hill rushes off the hard surfaces and down to a lake. So
the city is taking advantage of new development at the bottom of the hill. It’s
planning to filter the runoff through bioswales before it pollutes the lake.

“And once we’ve done that, I think we’re pretty much ready to say this is
the standard from now on.”

Conlin says the city will likely install bioswales in all new developments, and on
streets where the most runoff enters waterways.

He says cities around the country are contacting Seattle to find out how to install
bioswales of their own.

For the Environment Report, I’m Ann Dornfeld.

Related Links

Study: Wetland Banking Hurts Urban Areas

In some parts of the country, developers who damage or destroy wetlands are mitigating that by buying credits for wetlands that have been created somewhere else. It’s called “wetland banking” and it’s similar to banking programs for air pollution. Wetland banking resulted from state and federal efforts to stop the loss of wetlands nationwide. The GLRC’s Erin Toner reports:

Transcript

In some parts of the country, developers who damage or destroy
wetlands are making up for it by buying credits for wetlands that have
been created somewhere else. It’s called “wetland banking” and it’s
similar to banking programs for air pollution. Wetland banking resulted
from state and federal efforts to stop the loss of wetlands nationwide.
The GLRC’s Erin Toner reports:


J.B Ruhl is a professor of property at Florida State University. He
compiled a list of all wetland banking transactions in Florida. Ruhl
found a clear shift of wetlands from urban areas to rural areas, taking
environmental services away from cities.


Ruhl says wetlands provide flood and storm surge control, capture
pollution and recharge groundwater.


“If you take that wetland out, you’ve lost some value that you have to
either replace by building cement storm water ponds and all the other
things that could kind of replicate the wetland. Or, you just don’t replace
them, and either way you’re either spending money to replace the
wetland or you’re spending money to deal with the problems that arise
when the wetland is gone.”


Ruhl says the federal government should keep better track of where
wetlands are being lost and where they’re being replaced – and of the
environmental costs and benefits of those transactions.


For the GLRC, I’m Erin Toner.

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30 YEARS – REMEMBERING THE EDMUND FITZGERALD

Thirty years ago this month (November 10th), the iron ore carrier the Edmund Fitzgerald sank in Lake Superior. 29 men died. The lake carrier was caught in one of the worst storms recorded on the Great Lakes. In the years since the Edmund Fitzgerald went down, the Great Lakes Radio Consortium’s Mike Simonson has talked with those connected with the ship:

Transcript

Thirty years ago this month (November 10th), the iron ore carrier, the Edmund Fitzgerald, sank in
Lake Superior. 29 men died. The lake carrier was caught in one of the worst storms recorded on
the Great Lakes. In the years since the Edmund Fitzgerald went down, the Great Lakes Radio
Consortium’s Mike Simonson has talked with those connected with the ship:


Like the folk song relates, the November gales came early on Lake Superior in 1975. A storm
more fierce than even the most experienced lake carrier crews had ever seen hit the eastern side
of the lake. That night, Captain Dudley Paquette was shipmaster of the lake carrier Wilfred
Sykes…


“We were really out right in the middle of the lake. Just huge seas, 30-35 foot seas. I was
completely awash and I was on a super ship. I was registering 70, 75 knots steady with gusts to
100. Huge seas, I was completely awash. Water was flying over the top of my bridge.”


Like the carrier Wilfred Sykes, the Edmund Fitzgerald was a big ship, but early in the night the
captain saw ominous signs of trouble. The topside fence rails had snapped. The vents were torn
off. The radar was out. And the Edmund Fitzgerald’s Captain, Ernest McSorley had all the bilge
pumps on, trying to keep the ship from swamping.


Thom Holden is the curator of the Army Corps of Engineers Marine Museum. He says Captain
McSorley was in radio contact with Captain Jesse Cooper of the nearest ship, the Arthur
Anderson.


“The topside damage was an earlier report. After suffering this damage that Captain McSorley
did contact Cooper and ask him to shadow him down the lake. It was really several hours later
that what could be the last transmission from the Fitzgerald was received. Essentially Captain
Cooper or the mate asked McSorley how he was doing, how the vessel was riding. He said
‘We’re holding our own, going along like an old shoe.'”


In an interview from his retirement home in Florida, Arthur Anderson Captain Jesse Cooper said
the memory of that night still haunts him. He says Captain McSorley didn’t let on that his ship
and crew were in danger.


“I think he knew he was in trouble but he couldn’t spread the word because it would panic the
crew. (Simonson): How do you think he knew he was in trouble? (Cooper) What the hell would
you think if you had a hole in your bottom and were taking in more water than you could pump
out?”


At 7:10 that evening, the Fitzgerald disappeared from radar as it sailed into a snow squall only a
few miles from the safety of Whitefish Bay.


“My gut feeling was I knew she was gone when I couldn’t see her on the scope. Turning around,
I hated the thought of going back out in that sea.”


Radio communication from that night was recorded by the Coast Guard at Sault St. Marie
Michigan. The Coast Guard was asking captains to turn back into the storm and search for the
Fitzgerald. You’ll hear a distressed Captain Cooper answer the call.


“(Coast Guard:) Think there’s any possibility that you could turn around do any searching, over?’
(Cooper) ‘Oh God, I don’t know. That sea out there is tremendously large. If you want me to, I
can but I’m not going to be making any time. I’ll be lucky to do two or three miles per hour going
back out that way, over.’ (Coast Guard:) It looks like with the information we have that it is fairly
certain that the Fitzgerald went down. We’re talking now a matter of life and death and looking
for survivors that might be in life rafts or in the water. We can only ask the masters to do their
best without hazarding their vessels.'”


The U.S. Coast Guard rescue vessel Woodrush had left the Duluth port but it took 21 hours to
arrive on scene. Captain Jimmy Hobaugh says a life ring from the Fitzgerald popped up as they
arrived.


“Of course we searched for the three full days and it was rougher than you can imagine. No
matter how I turned the ship, we were taking green water over the top. If there had been someone
there, I’m positive that my crew was good enough that we would’ve got ’em.”


None of the men’s bodies were recovered.


Among the crew of 29 was Third Mate Michael Armagost of Iron River, Wisconsin. His widow
Janice says the families of the 29 men who went down with the Edmund Fitzgerald struggle with
their loss…


“Nobody realizes that there are survivors. I mean, my kids’ father is on that ship and my
husband’s on that ship. And people just think of it as a shipwreck that happened so long ago, and
it’s not.”


The families of the crew of the ship now say all they want is the final resting place of their loved
ones to remain undisturbed by divers. Only the bell of the wreck of the Edmund Fitzgerald was
recovered and placed in the Great Lakes Shipwreck Museum at Whitefish Point, Michigan ten
years ago.


For the GLRC, I’m Mike Simonson.

Related Links

Jump in Great Lakes Beach Closings

  • A new report says health-related beach closings have increased. (Photo courtesy of the EPA)

A new report says the number of beach closings in the U.S. increased last year compared to 2003. The report says the number of closings in the Great Lakes region jumped more than 60 percent. The Great Lakes Radio Consortium’s Michael Leland has more:

Transcript

A new report says the number of beach closings in the U.S.
increased last year compared to 2003. The report says the number of
closings in the Great Lakes region jumped more than sixty percent.
The Great Lakes Radio Consortium’s Michael Leland has more:


The report by the Natural Resources Defense Council says the number of
closing or health advisory days last year was higher than ever in the
group’s fifteen years of record-keeping.


Throughout the region, there were about three thousand closing or health advisory days in 2004. They say that’s due in part to states monitoring more beaches more often, but also due to
increased sewage and stormwater runoff. Mike Shriberg heads the Michigan environmental group PIRGIM.


“Under the Clean Water Act, we should not be discharging raw or
partialy-treated sewage or, in fact, any polluted water into the U.S. What’s
happening now is we’re having a third-world solution to our sewage problems,
by allowing much raw or partially-treated sewage to flow freely into our
waters.”


The NRDC is calling for tougher enforcement of state and federal clean
water standards, and full federal funding of proposals to modernize sewage
systems along the Great Lakes and other waterways.


For the GLRC, I’m Michael Leland.

Related Links

Epa Drops Sewage Blending Proposal

The Environmental Protection Agency has dropped its plans to adopt a controversial policy for sewage treatment plants. The Great Lakes Radio Consortium’s Mark Brush reports:

Transcript

The Environmental Protection Agency has dropped its plans to
adopt a controversial policy for sewage treatment plants. The Great
Lakes Radio Consortium’s Mark Brush reports:


The EPA was planning to sanction a practice known as sewage blending.


Sewage blending is used when treatment plants are hit with large volumes of
storm water. Partially treated sewage is blended with fully treated
sewage, and then released into nearby waterways.


Mike Shriberg is with the Public Interest Research Group. He says the
announcement is a positive step for clean water.


“What would’ve happened if this policy had passed is that sewage blending
would’ve become the end game. It would’ve been what wastewater treatment
plants do to treat sewage anytime that it rains. Now that option is gone.
So the plants that are doing it now have just been told that they need to
fully treat sewage in the future.”


The EPA said it dropped its proposal after receiving more than 98,000 public
comments. The announcement came shortly before Congress
was to vote on a bill to stop the sewage blending proposal.


For the GLRC, I’m Mark Brush.

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Exploring a Great Lakes Salt Mine

  • Salt is an essential resource for all people, especially those who live in areas where the roads get icy. (Photo by Lucian Binder)

Ever wonder where road departments get the mountains of salt they use each winter? Here in the Midwest, the answer can be found deep under Lake Erie. The Great Lakes Radio Consortium’s Ann Murray has the
story:

Transcript

Ever wonder where road departments get the mountains of salt
they use each winter? Here in the Midwest, the
answer can be found deep under Lake Erie. The Great Lakes Radio
Consortium’s Ann Murray has the story:


Orvosh: “Step right in there.”


Murray: “Ok, thanks.”


For Don Orvosh, an elevator ride nearly 2000 feet underground is just part of the daily grind.


(sound of clanking)


“It’s about a four and a half minute ride to the bottom. 1800… about 1800 feet.”


Orvosh supervises the Cleveland salt mine owned by Cargill Corporation. It’s one of only eleven active salt mines in the country. The mine lies beneath the northern edge of Cleveland and extends about four miles under Lake Erie.


Orvosh: “Most people in the city don’t even realize there’s a mine right here.”


Murray: “Are you all the way down?”


Orvosh: “We’re at the bottom right now. This is it.”


(sound of opening air-lock door)


A few feet from the elevator, Orvosh walks through a series of air-locked metal doors. They rotate to reveal a subterranean repair shop. Massive dump trucks and cranes are fixed here. The cavernous room is also the starting point for hundreds of miles of tunnels. These tunnels connect a honeycomb of old and active areas in the mine. Everyday, 150 workers travel this salt encrusted labyrinth by truck or tram.


“We’re going to get in this little buggy here now and in a couple minutes we’ll be under the lake.”


Lake Erie is a geological newcomer compared to the salt buried below it. This bed – extending from upper New York to Michigan – was formed 410 million years ago. That’s when an ancient sea retreated and left behind its brine. Oil drillers accidentally discovered the deposit in the 1860’s. As Orvosh drives north through the dark passageways, he says salt wasn’t extracted here until many years later.


“This shaft was sunk in the late fifties and the actual mining of salt occurred, started in the early sixties so it’s been here 40 plus years.”


In the last four decades, the mining process has stayed pretty much the same. Orvosh compares it to the room and pillar method used in underground coal extraction. He points up ahead to a brightly lit chamber. Machine generated light bounces off the room’s briny, white walls. Its 20 foot high ceiling is bolstered by pillars of salt the size of double-wide trailers.


Orvosh: “This is an active production section. This is where we are mining salt.”


Murray: “What’s happening here?”


Orvosh: “He’s drilling the face here.”


A miner sits atop a machine with a large needle nosed drill. It bores six holes into the seam. Later in the day, workers will load explosives in the holes and blow out big chunks of salt. Farther into the mine, the loose salt from last night’s blasting is being scooped up by front-end loaders and dumped into a crusher. All of the big chunks are broken into small pieces. Then the salt is loaded on conveyor belts and sent to the mine’s three-story-high underground mill. Salt is crushed, sized, screened and sent to the surface by elevator.


All told, the crews at the Cleveland mine produce two million tons of salt a year. A sizable chunk of the 15 million tons of salt used on icy US roads each winter. Demand for road salt has skyrocketed since it was introduced as a de-icer in the early 1950s. But Robert Springer, a 27- year veteran at this operation, says each mine fights for a market share.


Springer: “It is a competitive market. There’s another salt mine just in the Cleveland area, out there in Morton, Morton Salt.”


Murray: “We needed you today. The roads were really icy. Do you look forward to icy days to keep production up?”


Springer: “I guess you could say we look forward to bad weather. We enjoy the bad weather because we know there’s going to be salt used.”


(sound of radio and weather report)


Back on the surface, Bob Springer has gotten his wish… Cleveland has just been hit with a winter storm. At least a dozen trucks swing through the mine’s loading dock to pick up tons of salt. Later in the day, salt will be dumped onto barges and transported across the Great Lakes to places like Chicago and Toronto. This is high season for road salt. The crews here know that come March, they’ll start rousing salt from its ancient bed for the winter of 2006.


For the Great Lakes Radio Consortium, this is Ann Murray.

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Sewage Blending Stirs Up Debate

  • Many environmentalists fear the practice of sewage blending would become more routine if a new EPA policy is enacted. (Photo by M. Vasquez)

Officials at the Environmental Protection Agency are considering a new policy for sewage treatment plants. Many environmentalists say if the policy is adopted, it will lead to increased water pollution and greater risk to public health. The Great Lakes Radio Consortium’s Mark Brush reports on the debate over sewage blending:

Transcript

Officials at the Environmental Protection Agency are considering a new policy for sewage treatment plants. Many environmentalists say if the policy is adopted, it will lead to increased water pollution and greater risk to public health. The Great Lakes Radio Consortium’s Mark Brush reports on the debate over sewage blending:


(sound of water in sewer)


Some sanitary sewers are tied in with storm sewers. So when there’s a big rainstorm, or when there’s a fast snowmelt, all that water can inundate some sewage treatment plants. To tackle this problem, some treatment plants have adopted a practice known as “blending.” The excess sewage is re-routed around the slower parts of the treatment plant. The dirty water is then mixed with the water that’s been cleaned. It’s sometimes given a shot of chlorine, and then released into creeks, rivers, and lakes.


Kurt Heise oversees the operation of a sewage treatment plant on the Detroit River. He says the practice of blending is necessary in order to keep the plant from being overwhelmed.


“When you have a wet weather event, an extreme wet weather event, if we were to allow all of that combined water in through the normal process the treatment process would be ruined.”


Sewage blending has been around for a long time. To plant operators, it’s a necessary step in handling large amounts of dirty water. But to some people, blending is not seen as a good option. They want the practice to stop.


Instead, they say, cities should invest in their systems to make sure they can fully treat all the water that comes to the plant. Kurt Heise says, if his plant were required to do this, it wouldn’t make sense economically.


“It would almost result in doubling the size of our plant and spending just untold amounts of dollars for an event only happens a few times a year.”


Sewage treatment plant operators say you have to weigh the costs and the benefits before spending hundreds of millions of dollars on expanding the treatment plants. The decision of whether or not to allow blending has been left up to state and local regulators. But recently, the U.S. Environmental Protection Agency has weighed in on the subject. And ever since they suggested new guidelines for allowing blending, environmentalists have been critical of their plan. Mike Shriberg is the Great Lakes advocate for the Public Interest Research Group. It’s an environmental consumer activist organization.


Shriberg says the draft blending policy, the way it’s written now, is too broad. And will allow the practice of blending to become routine.


“Our fear is that when you’ve got a treatment plant that uses blending, they’re never going to upgrade to full treatment sewage. And so if a treatment plant is allowed to blend they’re not going to go up to full treatment capacity they have no incentive to do that anymore. It’s sort of the cheap way out.”


Sewage treatment operators say blending is better than seeing the raw sewage overflow into waterways. And they say it’s better than spending large sums of money to fix a problem that only occurs a few times a year. But critics say the EPA doesn’t have a good handle on how often blending is used, and what kind of health risks are associated with the practice.


Some initial studies have been done on blended sewage and how it might affect public health. Joan Rose is a water microbiologist at Michigan State University. She’s written a report on the health risks associated with blended sewage.


“So what I found was that if people were actually swimming in the water and there was a discharge of a blended sewage upstream, that their risk of getting sick, actually getting sick with a virus or a parasite was about a hundred times greater – when there was a blended discharge as opposed to if the water was fully treated.”


Rose says some of these viruses, such as Hepatitis-A, are highly contagious. At this point, there are no good estimates on how many people get sick from blended sewage each year. It’s never been studied, so the impact of blending on public health is unclear. Ben Grumbles is the Assistant Administrator for water at the EPA. He says the EPA is considering the billions of dollars at stake in expanding the nation’s sewer treatment plants versus the risk to public health.


“What we’re trying to do is to clarify what’s legal and what isn’t legal and to recognize the economic realities that sewage teatment plants face across the country in terms of their infrastructure needs, but foremost and above all what leaves the facility has to meet Clean Water Act permit limits.”


But the Clean Water Act permit limits don’t measure all the viruses, bacteria, and parasites found in blended sewage. And so some environmentalists and scientists say meeting the limits doesn’t necessarily mean protecting public health. Grumbles says officials are still reviewing the tens of thousands of comments they received after releasing the draft blending policy.


He says he doesn’t know what the final rule will look like, or if they’ll issue a rule at all. One thing is likely, if the policy is finalized the way it’s written now, it’s expected that environmental groups will take the EPA to court.


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

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Rain Gardens Prevent Pollution

  • Homeowners across the Midwest are discovering the benefits of rain gardens. Slightly sunken areas of native plants hold heavy rains and cleanse runoff as it sinks slowly into the ground. Photo courtesy Wisconsin Department of Natural Resources.

A good Midwestern summer storm can dump a lot of water in one place. Sometimes there’s so much rainwater, it overwhelms the underground sewage pipes. The rainwater mixes with untreated sewage and washes into lakes and rivers. Cities around the country are each spending millions of dollars to solve the problem. In one city, officials are encouraging people to build “rain gardens.” The perennial gardens are designed to hold rainwater and let it seep gradually into the ground. In another installment of the Great Lakes Radio Consortium’s “Your Choice; Your Planet” series… Stephanie Hemphill reports:

Transcript

A good midwestern summer storm can dump a lot of water in one
place. Sometimes there’s so much rainwater, it floods into the
underground pipes that carry sewer waste. It mixes with untreated
sewage and washes into lakes and rivers. Cities around the country
are each spending millions of dollars to solve the problem. In one
city, officials are encouraging people to build “rain gardens.” The
perennial gardens are designed to hold rainwater and let it seep
gradually into the ground. The Great Lakes Radio Consortium’s
Stephanie Hemphill reports:


The sewage treatment plant sits right on the waterfront of Lake
Superior in Superior, Wisconsin. You can see treatment tanks and
pump houses at the edge of the lake, and lately you can also see
gardens. They’re demonstration plots, showing how homeowners
can help solve a serious problem. Each garden is like a shallow
bowl; about six inches lower than the surrounding ground. The
buildings next to the gardens have down spouts that carry water from
the roofs right into the gardens.


Charlene Johnson is creating these rain gardens. She digs away the
surface soil, adds compost, and then plants native grasses and
perennials.


“We’ve got the Golden alexander starting to bloom, this one has
purple coneflower, Green-headed coneflower, Cardinal flower, the
bonisette.”


They’re pretty and they’re all plants that can live with a lot of water, or
just a little. Johnson says they do a much better job of holding onto
rainwater than a regular lawn, because they have deep roots.

“You know, the average lawn is about 1-2 inches. Therefore you’d
only have one or two inches of roots. Roots equal storage capacity.
Also as the roots penetrate through the ground, they die back, and
those holes can also be used for storm water retention.”

That helps keep some of the rainwater from rushing into the sewer
system. Johnson would like it if every yard in Superior had a rain
garden. The ideal size depends on the size of the house and the
type of soil in the yard, but they’re usually about the size of a small
patio.


A lot of us are building water gardens these days – small pools or
ponds – but a rain garden is different. It’s not designed to hold water
or goldfish. It’s designed to absorb big rains and let them sink slowly
into the ground.


“Plants and soil naturally cleanse pollutants from water. By the time it
recharges into the groundwater aquifers, the water is essentially
clean. ”


Charlene Johnson says rain gardens cost about the same to build as
any other perennial garden – between $3 and 5 a square foot. Most
of that is to buy plants, so it’s a one-time purchase. Even if it’s not
that expensive, you might be thinking it’s still a lot of money just to
help the city save on treating sewage, but Johnson says it can pay off
in the long run, because keeping rainwater out of the sewage
treatment system, means the city won’t have to treat as much
volume. That saves money and keeps your monthly sewer bill lower.


Your rain garden will also help the environment by keeping the rush
of water from overwhelming the sewer system and sending it into the
river or lake near your home.


On the other side of town, Jan Murphy says she loves her rain
garden. She built it seven years ago when she built her bookstore
and coffee shop in Superior.


(sound of blackbird)


“We’ve had ducks. That’s a baby redwing blackbird I believe, it’s
been very delightful. We’ve had lots of little critters in here from time
to time. ”


Runoff from the bookstore parking lot flows into the garden, where the cattails and other
native plants clean it up before it seeps into the city storm water system. Now, if you and
your neighbors build rain gardens, it still might not completely solve your city’s problems
with storm water runoff, but the experts say it can help.


Kurt Soderberg directs the Western Lake Superior Sanitary District in
Duluth. He says rainwater picks up all kinds of pollution as it flows
across parking lots, streets, and yards, and eventually into rivers and
lakes.


“Rainwater is a big impact on water quality. Whether it’s sediment
washing into the lake, whether it’s fecal coliform going into the creeks
and the lakes, there are a whole lot of reasons why you want to stop
storm water from rushing into the natural bodies of water. ”


Soderberg says rain gardens can filter and clean the water before it
reaches lakes and rivers. A lot of cities are spending millions of
dollars each, trying to keep storm water from overwhelming the sewer
system. Soderberg says rain gardens could be part of the solution.


For the Great Lakes Radio Consortium, I’m Stephanie Hemphill.

Wilderness Area to Be Torched

Last summer a violent storm struck down nearly half a million acres of
trees in and around the boundary waters canoe area. The boundary waters
is a pristine wilderness area in northeastern Minnesota. No motorized
vehicles are allowed and the U-S Forest Service does minimal management,
leaving it in its natural state. But now officials are worried about
the fire danger, and they’re planning some measures that normally aren’t
allowed. The Great Lakes Radio Consortium’s Stephanie Hemphill has
more: