Sunday, October 29, 2000

Waste not wanted

Published in the Antarctic Sun

McMurdo Station is the largest human settlement on the continent of Antarctica. More than
1,000 people will call it home this summer.

It’s an around-the-clock operation that generates sewage 24 hours a day. That waste is piped into the ocean less than 200 feet from the shoreline.

Two researchers are studying the impact the sewage outflow has on the McMurdo Sound ecosystem and on the quality of drinking water at the station.

John Lisle and Jim Smith are examining samples of ocean-floor sediment, the seawater, Weddell seal feces and McMurdo’s drinking water for evidence of human bacteria and viruses.

The first two are primary sources for a baseline indicator of how much pollution the sewage is introducing into the slow-moving ocean off McMurdo Station.

Seal feces help show the degree to which human bacteria have become part of the ecosystem, possibly causing disease in the seal population.

The drinking water studies are the first to test for viruses in McMurdo’s fresh water supply. The station’s water is regularly tested for bacteria and other contaminants, including lead.

The three major indicators the pair are looking at are fecal coliform bacteria, a common indicator of water quality used in judging safety of beaches and shellfish, clostridium perfringens, a bacterium associated with human sewage, and human enterovirus, which is found in human
feces.

Seal exposure
Lisle and Smith will compare the genetic material in bacteria in sewage and in similar bacteria in seal feces to see if the human bacteria are exchanging genetic information with bacteria in seals.

“Nobody knows if seals normally have clostridia,” Lisle said. He said they are also trying to find some seals that would not have been exposed to human waste, to give them a baseline level of clostridium bacteria in seal feces.

They hope to learn whether human diseases are being transmitted to the seals.

Two teams of researchers studying Weddell seals in McMurdo Sound are helping the pair by collecting samples of seal feces.

Outfall sampling
Science support diver Rob Robbins is collecting samples of water and the ocean floor around the sewage outfall.

Previous work has shown clostridia in sediment layers containing fecal coliform, and defined the physical extent of the pollution from the sewage outfall.

One of the problems was the concentration of waste in a location where the water doesn’t do much to dilute it.

“There aren’t very high current speeds here , ’’Smith said.

The end of the pipe, Robbins said, is 180 feet offshore in an area where the bottom is 60 feet deep. The pipe is raised four feet off the sea floor.

Since the new Crary aquarium was built five years ago, it flushes 250 gallons of cold seawater through the system each minute, Robbins said.

It used to be that the pile would grow over the course of a season to the height of the pipe. Now, Robbins said, with the increased flow from the aquarium in Crary, the waste has spread more thinly over a large area.

“Now it’s this huge field of effluent. It’s mostly poop out there,” Robbins said.

“Most of the pieces are about as big as your fingernail.”

Robbins talked about the spiny sea urchins that like to try to camouflage themselves with debris from the ocean floor.

Normally, they use other animals or bits of coral or other normal sea-floor debris. Near the outfall, though, Robbins said, “You see them with pretty interesting things.”

“I like diving at the outfall,” Robbins said. “You see things you’d never see anywhere else.”

Drinking water quality
The sewage plume extends beyond the intake for McMurdo’s water supply, but this has not been a problem in the past.

“The drinking water quality’s always been fine,” Smith said. But they are testing the water in a new way.

“This is the first time that viruses have been looked at,” Lisle said.

Both are clear, though, about the outfall’s role in transmitting contagious disease on the station.

“You can’t get the Crud from the sewer,” Smith said.

The samples of drinking water will be sent to the University of Arizona for analysis of viral presence; the results will not be available until the scientists return home.

Sewage treatment
“With the Antarctic Treaty, all the treaty signers are held to various standards for pollution and waste,” Smith said.

Some Antarctic bases do treat their waste already, including an Australian base, Smith said. New Zealand is planning to build a sewage treatment plant at Scott Base. McMurdo’s current macerator system meets the treaty requirements.

“Doing sewage treatment down here is a real challenge,” Smith said. Other places, he said, use big lagoons or oxidation ponds.

“ You can’t have that here. It’d just freeze solid,” he said.

Blasting began last week for McMurdo’s new sewage treatment plant, which will be running in 2003, said NSF facilities manager Frank Brier. The sludge from the plant, Brier said, will be sent back to the U.S. for disposal. The water leaving the plant will be treated to kill viruses and bacteria to prevent further pollution of the ocean.

“What is discharged (from the plant) is not drinkable but it’s clean,” Brier said.

Sunday, October 22, 2000

Science roundup

Published in the Antarctic Sun

As summer returns to Antarctica, scientists and science support staff around the continent gear up for the prime research season. On the U.S. research vessels Laurence M. Gould and Nathaniel B. Palmer and at McMurdo, South Pole and Palmer stations, over 600 researchers will work on over 130 separate science projects. Here are some of the highlights of the upcoming science season:

ITASE
The International Trans-Antarctic Scientific Expedition will continue its journeys in East Antarctica, looking at shallow ice cores, showing climatic data from the past 200 years or so. (Corrected: West Antarctica.) Most global climatic data shows general trends of warming and cooling through Earth’s history, according to Bernie Lettau, the NSF science representative at
McMurdo Station. But climate also includes smaller areas. Global fluctuation is punctuated by more localized changes.
“There still have to be regional differences,” Lettau said. ITASE will continue to look at the actual data for the recent history of Antarctica.

SOAR
The Support Office for Aerogeophysical Research will fly over the area of Lake Vostok and Russia’s Vostok Station to study the area more closely. The information will be used in preparations for further study of Lake Vostok.
“It’s so they can make some educated decisions about what to do,” said Crary Lab supervisor Robbie Score.

The Crud
John Lyle is studying the McMurdo Crud, the illness that can strike McMurdo residents each season. The viruses survive in the air as well as in the sewage outfall into McMurdo Sound. They are not native to the area, and so they affect the water quality and the wildlife around the station.
“What they’re trying to do is see how our viruses influence the indigenous populations,” Score said.

Sea ice
John Dempsey of Clarkson University is studying the structure of sea ice, including how it forms and how it breaks up. The group is based near the edge of the fast ice of McMurdo Sound.
“They’re cutting a floe out and they’re going to start a crack and put weights on either side,” Score said.

Decoding ice cores
A team at South Pole Station is looking at how atmospheric particles end up in icecore sediments. Interpreting ice cores, Lettau said, requires an understanding of how the layers form. The team, led by Doug Davis of the Georgia Institute of Technology, is specifically targeting sulfur chemistry because of the significance of sulfur deposits in ice.
“Sulfates in ice are a primary proxy for reconstructing the climatic history from the core,” Lettau said.

GLOBEC
The Southern Ocean Global Ocean Ecosystems Dynamics study group will spend their first summer looking at krill as part of a summer-winter-summer set of cruises to look at the basic element of the Antarctic food chain.
“It is intended to look at the health of these various niches in the ocean ecosystem,” Lettau said. “What do krill eat when they’re under the ice in winter? Are they happy there?”

Scott Base
Antarctica New Zealand are supporting several projects this summer season, including a study of methods of preserving the historic huts on Hut Point, Cape Evans and Cape Royds. Also this season, Scott Base will see a series of interviews designed to compare people’s expectations
about Antarctica and their actual perceptions upon arrival, several ecological and environmental studies and a study of Adélie penguin populations at capes Crozier, Royds and Bird, which is one of several collaborative efforts between U.S. and New Zealand scientists. The equipment
used in the Cape Roberts drilling project, which was stored on Cape Roberts over the winter, will be returned to Scott Base this season.

Galley's gone... It’s now called the “dining facility.” More than the name has changed.

Published in the Antarctic Sun

Dining workers are experimenting on McMurdo Station residents. With the opening of the new dining facility in Building 155, food service staff have been trying out new configurations of equipment and different traffic flows.

The new space opened in mid-August, just before Winfly, and eaters and servers have both shared confusion at its use, said food services manager Lester Bracey.

“Initially we didn’t know what everything was supposed to do,” he said.

Some of the kiosks on which food is served can be rearranged, which allows for flexibility. The new structure, though, is designed to be less of a cafeteria line and more like a food court.

“It’s supposed to scatter people around,” Bracey said. “You’re just supposed to move in and out.”

With fewer bays, the kitchen staff can spend more time preparing food.

“They’re actually able to focus on a better-quality product for fewer slots,” Bracey said.

Not all of the food-serving areas are open yet. With new staff and a new facility, they’re
moving slowly to be sure things run smoothly, said Bracey. “Over Winfly we moved
things around a lot.”

But some things are not working out so well, such as the dish-return area.

“We’ve got a bit of a traffic jam,” he said.

However, people are responding to that by staggering their arrival times for meals and
leaving earlier to get to work on time.

There was no logjam when it came to construction.

Things went very well, said winter construction and maintenance manager Mike Kelly.

The first task was to open up the space. “The first month was almost completely
tearing things out,” Kelly said.

He said new features of the dining area include ventilation equipment that exchanges
the entire volume of the room 42 times each hour, skylights with motorized shades that can allow light in or seal it out, and radiant, under-floor heating, which uses the same glycol-
based waste-heat recovery system as the rest of the building.

The construction crew numbered anywhere between 15 and 25 people, Kelly said.

But even with all the demands of the job, Kelly said they only had to work one Sunday of overtime to finish the work on schedule.

Several people, Kelly said, were truly crucial to the success of the construction, which is the first major winter project completed on time in several years. Kelly credited electrician Dale Role, plumber Paul Rogers, metal-worker Fred Cunningham, and Ken Robinson and his crew of sheetrockers.

“We were lucky to get people who can do this quality of work,” he said.

Kelly also gave credit to Vince Scopa, who coordinated the project. Scopa, Kelly said, became known as a hard-driving boss, but one the crew wanted to work with.

“They jokingly called this (building) ‘Cellblock 155.’ But they all wanted to work in Cellblock 155,” Kelly said.

With 358 seats, the new facility holds 60 more seats than the old galley.

Some things have been left to be finished this summer season. For example, there will be clear glass blocks placed in the railings to better separate the sections of the dining space.

Thursday, September 21, 2000

Fire damages old courthouse

Published in the Addison Independent

MIDDLEBURY - A fire at Middlebury College's Center for Educational Technology closed sections of Court Square Monday afternoon. The center, which has been undergoing restoration, caught fire in the cupola of the landmark building, which was the Addison County Courthouse through 1995.

Middlebury Fire Chief Rick Cole said he understood the fire had started when painters were peeling paint with heat guns as part of the restoration work. He said the fire, which was the first in the building in at least 25 years, was fairly small but complicated due to the structure and the new construction.

"You have to take it slow and easy," Cole said.

The freshly restored cupola roof, completed just days before the fire, proved an obstacle to the firefighters because of the newness of the construction.

Cole called out most of the Middlebury Fire Department to fight the fire. He said the New Haven Fire Department was called to assist at the scene as well as to cover the Middlebury station while the department was at the old courthouse. When he decided he wanted an additional ladder truck, Cole called Vergennes, which responded with the one ladder truck requested.

Cole said there were no injuries to firefighters. Damage to equipment in the high-tech building was also minimal.

Inside the building, the firefighters had covered computers and office desks with plastic, which saved most of the computers from water damage resulting from the firefighters and sprinkler system.

A couple of offices in the front of the building were destroyed by water damage, but the main teaching spaces and most offices were damp but not seriously affected, according to Marsha DeBonis, assistant director of Project 2001, the college organization that occupies the building.

"We're trying to dry things out," DeBonis said. "The front offices got hit badly."

The offices will be repaired within 10 days, DeBonis said. The computer equipment was working well, she said.

"Everything came back up (Tuesday) morning beautifully," DeBonis said. "It could have been a lot worse."

Monday, August 14, 2000

Demolition derby rocks county fair

Published in the Addison Independent

NEW HAVEN — A junkyard was parked in the mud. The crowds were gathered to watch the ultimate battle, a fight to the mechanical death. The last one to need a repair shop wins — except they all could already use some body work, and maybe a few new parts.

A coat of paint? Definitely.

But then, this is the Addison County Fair and Field Days demolition derby, where muscle and steel count for everything and things like windshields and mufflers don't even exist.

Fire crews and an ambulance stand ready to rescue drivers whose cars get destroyed — or rather, finished off. Seventy vehicles are in the lineup for the night, in six heats with a final feature smash-up for the big money.

Without the traditional Field Days rainstorm, the Vergennes Fire Department had to pre-soak the ground to ensure the proper degree of mud for the first night of competition on Wednesday. The destruction began with four heats of big six-cylinder cars.

Here is a look at how the action went.

In the first heat, Thadeus Sorrell in the No. 41 car took several long high-speed runs, reversing into the mass of cars at one end of the ring or the other. But his fortune turned against him when several cars seemed to gang up on him, reducing his car to a smoking hulk with massive bends in its frame.

Matthew DeBisschop in car 70 took Madeline Martell in car 57 and Travis Forbes (car 45) on a long ride most of the length of the ring, pushing Forbes over the concrete barrier at the edge.

"Number 51 is now a compact," the announcer said, after a big multi-car collision.

The heat winners were Chad Steady (car 99) and Mike McGrath in car 11. Wendell Mason in car 21 was third.

The top two in a heat win money and are eligible to appear in the final feature of the night. The third driver is also eligible for the final, though the driver wins no money for the heat.

As the smoke cleared, two Bobcats and a forklift entered the ring to begin removing the steaming, smoking wrecks. Most of the drivers were able to steer their cars; some were able to move under their own power after being extracted from other cars or the barrier edging the ring.

The second heat started with Pat Deering (car 12) nicking part of the log barrier on his way into the ring.

Nathan Bingham (car 9) was quickly driven up high on the barrier. Thomas Sattus (car 38) hit Troy Goduo (car 30) heavily, but was then pinned by three disabled cars. Eric Huestis in car 55 cleared Goduo with a heavy hit.

Derrick Dykstra (car 81) got stuck in a corner for a while, but managed to make it out eventually. Because his car was protected from the early carnage, Dykstra was able to make some long damaging runs later in the heat.

Goduo put a huge hit on Deering, lifting both cars off the ground. Car 55 had destroyed its rear end, but Heustis continued smashing competitors with the back seat.

When action resumed after a fire was extinguished, Nathan Bingham took his No. 9 on a long run, pushing Harry Chamberland (car 22) high up onto the barrier. Chamberland was able, though, to spin his wheels enough to get unstuck.

VanDeWeert and Chamberland were the top two in the heat, while Bingham also survived to be eligible for the final round.

In the cleanup, Garrett Given's No. 77 pushed Matt Deering (car 13) out of the ring.

As the cars entered the ring for the third six-cylinder heat, Phillip Stevens' No. 63 died before even getting past the barrier. Stevens, obviously frustrated, was towed away, but would return in the fourth heat.

This round was characterized by several cars pushed up on the barrier very quickly, and by the massive fishtail tactics of Boomer LaFountain in the No. 57 car.

For a time, Kenny Lussier in No. 2 was sandwiched between LaFountain and Gerard Grant in No. 71, but escaped and slammed Jeffrey Sampson's into the wall.

Sampson got stuck in the corner behind Jody Bartlett's No. 72. Sampson kept backing into Bartlett, hammering away trying to get out, but eventually the engine had enough and quit in a massive cloud of smoke and steam.

LaFountain and Lussier won the heat, with Ben Paquin (car 69) in third.

"It was my first time out there," Lussier said, "I just keep hittin' and hittin' and hittin'."

In trying to remove David Parker's car 51 from its position on the barrier, the Bobcat drivers nearly flipped it. When they did get it unstuck, though, Parker was able to drive out of the ring without a problem.

Stevens got his car 63 into the ring for the fourth heat, but only took one run at an opponent before it died.

The No. 35 car, driven by Roxie Hall, caught fire and Hall got out quickly. Safely in the crowd, she could still see the flames in her head.

"I had watched the fire long enough," she said.

Gregory Manchester in No. 52 and Michael Gill in No. 32 set up a joint attack on Mike LaFountain's car 84, but it went awry. Gill successfully hit LaFountain, but was immediately hit by Manchester.

Bruce Putnam, in No. 50, had some serious trouble with his partially-detached bumper. No matter where he headed, he had to drive over his own bumper to get there. It made for a rockier ride than usual for Putnam, whose car later caught fire.

The final three were locked in battle for a long time. Manchester and LaFountain sandwiched Tim Tenney's No. 44, compressing it from both ends simultaneously. When Tenney finally escaped, his car was crippled.

LaFountain executed a smooth evasion of a threat from Manchester, but was hit by Tenney's crawling car in a last-gasp effort to keep car 44 in the running.

In the back lot, work was frantic. Drivers who won their heats were trying to fix up their vehicles to give them a good chance in the final.

"They're just rippin' stuff off, ripping fenders off, changing tires, chains and that," said Mike McGrath. He didn't have much work to do, though.

"I just tried to plug up the radiator so it won't leak," he said.

In the meantime, the four-cylinder cars were lined up to drive each other to bits in two heats.

Jason Paquette in No. 42 was first off the line, but Chris Bearor in car 9 stole the early stages with a long sweeping run piling up several cars on the rear end of his.

Todd Huestis in No. 75 had a flashing light atop his car. After a few hits, though, the light quit flashing and just stayed on.

Jeremy Markwell in No. 65 smashed into Bearor, putting both through the barrier.

"It's crunch time at the Addison County Field Days," the announcer said.

Melissa Smith in No. 31 went head-to-head with Kevin Wedge in No. 17. Smith, granddaughter of legendary demo derby driver Wally LaFountain, took a huge evasive swing and drove Wedge into the wall for the win.

In the second four-cylinder heat, John Bannon, Jr., in car 22, didn't get off the line.

The other cars did, though, and soon bumpers, tires and car parts littered the mud, popping tires and adding to the mayhem.

In a tribute to the American automotive industry, several cars took head-on collisions and kept moving, with their drivers unhurt.

Mike Paquette in No. 19 and Steve Miller in No. 33 were the last two. Miller's car was much stronger, but Paquette's was more agile and outmaneuvered its opponent for the win.

FINAL FEATURE
The final feature heat brought back the winners in the six-cylinder class. Some were in the same cars, while others had traded up to better cars for the final.

Mike McGrath in No. 11 dominated the final, making hard hits on Jason VanDeWeert in No. 25 and Mike LaFountain in No. 49. LaFountain and Harry Chamberland in No. 78 spun their tires into cinders and smoke.

LaFountain and McGrath were the last two, engaged in a dance for the cash. They spun in circles, went back and forth, side by side. McGrath's dashboard warning lights were all lit up.

In the haze and smoke the two drivers eyed each other, each aiming to disable the other's car without a fatal blow to his own. After several attempts, McGrath got free and set up for a crushing reverse blow. He delivered it and went back for another, both of which landed solidly.

LaFountain's engine caught fire, and it was all over.

McGrath came over to the stands, waving his trophy to the adulation of his fans. His most enthusiastic supporter, though, was Dave Musante, who gave McGrath the car.

"When I first came here in 1998, I drove into a snowbank," Musante said. "Mike pulled me out and said it looked like a good car for the derby. I told him, 'It's yours when I get rid of it.'"

On Thursday, the action continued, with Dave Holbrook outlasting everyone and taking the championship.