[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Thrilling application of surplus DOE funds.
Maury Siskel maury@webtexas.com
___________
"The only way to make sure that government doesn't abuse its
power is to not grant it in the first place." --Tom DeWeese
PittsburghLIVE.com: Nuclear legacy studied -
KQV Radio [http://www.kqv.com/]
Monday, August 16, 2004
Professor studies island's nuclear legacy
Professor Dan Volz
Joanna Burger/For the Tribune-Review
By Jennifer Bails
TRIBUNE-REVIEW
In the icy rough waters where the Pacific Ocean meets the Bering
Sea, the island of Amchitka still bears the radioactive waste
burden of the Cold War. In 1971, the now-defunct Atomic Energy
Commission conducted the largest underground nuclear explosion
in the nation's history on the remote Aleutian outpost to test a warhead
for missile defense.
The nearly 5-megaton bomb named Cannikin (pronounced CAN-ick-in
and meaning "airtight container") was detonated a mile beneath
the earth, lifting Amchitka one foot in the air and drowning its
rugged cliffs in waves two stories high. Felt throughout Alaska as a
massive earthquake, the thermonuclear blast was almost 400 times more
powerful than the weapon that destroyed Hiroshima.
More than 30 years later, it's still unclear whether radioactive
particles released underground by Cannikin and two smaller
nuclear test blasts on the island are leaking from the bomb-created
glass-lined cavity where they are supposed to be
contained. This nuclear legacy could pose a threat to marine life in the
waters around the island and to the health of people across the world
who consume fish caught there.
Two-month expedition
To assess this risk, Conrad "Dan" Volz, a professor at the
University of Pittsburgh Graduate School of Public Health, spent
about two months this summer as project director of a $3.1
million scientific expedition to Amchitka (an Aleut word
pronounced am-CHIT-kah) paid for by the U.S. Department of
Energy.
The DOE is moving to designate the island as a national wildlife
refuge under the stewardship of the U.S. Fish and Wildlife
Service. Before this transfer can take place, the federal
government is seeking to find out whether radioactive material
from the three nuclear tests is seeping from the bomb craters
into Amchitka's marine ecosystem.
"There may not be a leak on Amchitka now, but it will leak
someday," said Volz, 51, of West Deer. "We need to get a
complete picture of what's going on so the government can
develop a plan for the island's future."
The environmental and economic stakes are high. Amchitka is home to a
diverse web of marine life that includes kelp beds, king crab, bald
eagles, puffins, halibut, cod, sea otters, sea lions and killer whales.
Also, the waters off the island are popular with both commercial and
native fishermen.
Statewide, fish and shellfish brought in more than $1.1 billion
in revenue in 2003, along with $50 million in taxes for Alaska,
according to the state's Division of Commercial Fisheries. In
addition, more than 100,000 subsistence fishermen in Alaska
depend on what they catch to survive, Volz said.
Therefore, cancer-causing radioactive particles detected in the
heavily fished waters around Amchitka could have consequences
not only for marine life, but for the health of the Alaskan
fisheries industry, native Aleutians and seafood consumers
worldwide.
The Amchitka research study is being conducted by CRESP, the
Consortium for Risk Evaluation with Stakeholder Participation.
Launched in 1995, CRESP is an independent partnership among
university researchers, including Volz, working to help the
federal government make decisions about cleaning up the nation's
nuclear weapons sites. Dr. Bernard Goldstein, the dean of Pitt's
Graduate School of Public Health, serves on CRESP's management
board.
Volz came to the university about six years ago to pursue his
doctorate in public health after selling his Harmar-based
environmental services company. CRESP tapped him to lead the
Amchitka field expedition because of his project management and
outdoors experience. "What Dr. Volz accomplished on Amchitka epitomizes
environmental public health practice under very challenging conditions,"
Goldstein said.
'Adventure of a lifetime'
Volz is an accomplished mountaineer and river raft guide who has
trekked across Glacier National Park in Montana, hiked the
beaches of Normandy and traversed the Paintbrush Divide in the
Grand Tetons. But he calls his journey to Amchitka "the adventure of a
lifetime."
The seismically active island with weekly earthquakes is a few
miles from the international dateline and much closer to Russia
than to mainland Alaska. Summer days are long and cold, and
violent snowstorms aren't uncommon in the middle of July.
"You are really at the end of the earth on Amchitka," Volz said.
In the early 1960s, the government chose the 40-mile-long island
for underground nuclear tests that were too large for Nevada. No
one lives on Amchitka, although native Aleuts on Adak Island 155
miles away fish in the surrounding waters and view the region as
their historic home. Volz accompanied two teams of about a dozen
scientists to the island this summer aboard a 160-foot trawler called
the Ocean Expedition that doubled as a research laboratory and seafaring
hotel.
The first team was in charge of oceanographic bottom mapping and
land geophysics. They used sonar to survey the ocean bottom near the
blast cavities for fractures that might have been caused by the movement
of the island chain, seismic activity or the bomb
tests. These fractures could make it easier for radionuclides,
such as cancer-causing plutonium, uranium and cesium, to escape
into the ocean, Volz said.
In addition, the team used electronic underwater probes to look
for indications that freshwater might be entering the ocean
bottom. This could provide evidence that radionuclide-containing
groundwater is flowing from the bomb cavities. They also measured the
depth of freshwater over the blast cavities to better predict the
position of potential seepages.
The second group of scientists used these physical data to
select the locations where radionuclides would be most likely to
enter the sea. They worked day and night at these sites for about six
weeks to collect thousands of tissue samples from a dazzling menagerie
of algae, small invertebrates such as sea urchins, fish and seabirds.
To do so, they braved storms on the open ocean with swells
taller than 40 feet and winds fiercer than 80 mph. They
rappelled down steep cliffs to a bald eagle's nest. They went
scuba diving in freezing cold waters. They trekked through
fields of waist-high tundra grass to search for ducks. They
caught 150-pound halibut off the rear of their boat. "Life's a little
too mundane now that I'm back in Pittsburgh," Volz said. "I keep
thinking I'd much rather be at the back end of a trawler with the waves
breaking over my head."
The next steps
In the next few months, the samples of marine life collected at
Amchitka will be analyzed for radioactive contamination by
researchers at the Idaho National Engineering Laboratory and the
Vanderbilt University Department of Civil and Environmental
Engineering in Nashville. These results will be compared to data
gathered from an uncontaminated reference island nearby.
Of particular concern are birds and mammals -- including humans
-- at the top of the food chain, which ingest all of the
contaminants accumulated in the tissues of their food.
That's why commercial fishermen in Alaska and native Aleutians
are anxiously awaiting results of the Amchitka study, which will
not be published until spring, Volz said. "I sincerely hope that we find
no difference between the animals on Amchitka and those at our reference
site," Volz said. "That would take us into really having to define a
problem that might exist."
There is no way to plug a deep underwater radiation leak. If
higher than normal levels of radionuclides are detected in the
waters around Amchitka, the best solution would be a long-term
monitoring program, Volz said. If contamination is found, restrictions
might have to be placed on fishing in certain areas, he said. Scientists
also would have to determine the real risk posed to human health by
eating fish caught near the island and issue warnings accordingly so
people could make informed dietary decisions, Volz said.
In Pennsylvania, for example, state agencies caution against
eating more than one serving a week of fish caught in state
waterways because of concern about mercury and PCBs. Lessons learned in
the Aleutian Islands could be put to use at
other so-called nuclear legacy sites, including those in
Southwestern Pennsylvania, Volz said.
"We want to do the things we're doing at such faraway sites
locally," he said. "There are a number of Superfund sites in the
region that need to be (cleaned up), and the Graduate School of
Public Health together with CRESP has the institutional
capability to make this happen."
Jennifer Bails can be reached at jbails@tribweb.com
[jbails@tribweb.com] or (412) 320-7991.
Images and text copyright C 2004 by The Tribune-Review Publishing
Co.
************************************************************************
You are currently subscribed to the Radsafe mailing list. To
unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu Put the
text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,
with no subject line. You can view the Radsafe archives at
http://www.vanderbilt.edu/radsafe/