By Bruce Henderson
bhenderson@charlotteobserver.com
Posted: Tuesday, Dec. 29, 2009
The source of contaminated fish in Badin
Lake, scene of a long-running dispute over Alcoa's now-closed aluminum
smelter, remains unknown nearly a year after state officials warned the
public.
Alcoa
has acknowledged contamination from its plant, 45 miles northeast of
Charlotte, which for decades was Stanly County's biggest employer. But
the company says there is no proof it is responsible for the tainted
fish that led to a state warning in February.
Environmentalists, meanwhile, say a state investigation is dead in the water.
Toxic
fish are only part of Alcoa's struggles with its community. In a rare
move, Gov. Bev Perdue wants the state to take over the aluminum maker's
hydroelectric operations on 38 miles of the Yadkin River. And a judge
has put on hold a key state permit Alcoa needs to renew its federal
hydro license.
The contamination controversy focuses on
chemical compounds known as PCBs, used as a lubricant for electrical
equipment. PCBs were banned in 1977 because they probably cause cancer,
but are still found in soil and water.
N.C. officials have
documented PCB contamination in sediment below Badin Lake's dam, from
capacitors dumped years ago. They also found it in soil at Alcoa's
smelter and in lake sediment near the plant. None pose public health
risks, they have said.
But when state health officials
found PCBs in fish, they warned pregnant women, those of child-bearing
age and children not to eat catfish and largemouth bass caught in the
lake. Others, they said, should eat those fish no more than once a week.
Sides soon formed over Alcoa's role.
"We
need to clean up the source of contamination and stop the hemorrhaging
of contaminants into the waterway," said Yadkin River keeper Dean
Naujoks, who blames Alcoa. "Once we start that, we're almost certain to
find more and more contaminants washing into the river."
Naujoks
had experience with PCB contamination on the upper Neuse River, where
industrial property in Raleigh became a Superfund federal
hazardous-waste cleanup site. He's frustrated by what he calls the
state's inaction on probing the source of the Yadkin contamination.
"They've made it clear they don't have the resources to investigate," he said.
The N.C. Division of Water Quality says it can't comment because of related lawsuits now before state administrative courts.
But
in past cases involving PCBs in fish tissue, spokeswoman Susan
Massengale said, the affected water bodies have been added to the
state's list of impaired waterways. That listing triggers a study of
the pollutant's source and how to control it.
John Rodgers,
a Clemson University water-quality expert hired by Alcoa's critics,
found a link between the PCBs Alcoa used and PCBs found in Badin Lake's
fish and mud.
State scientists aren't so sure. The state's
fish testing didn't address the source of PCB contamination. But a
review by the N.C. Division of Waste Management said "it would be
extremely difficult and unlikely to conclude that these (related
chemicals) are due solely from any one source with any degree of
confidence."
The division says it forwarded the information
to the Environmental Protection Agency, which oversees company cleanups
of toxic substances.
Alcoa's own PCB expert reached an
opposite conclusion from Rodgers. The PCBs found in Badin Lake, said
New Jersey scientist David Glaser, are nearly identical to PCBs found
in fish in seven other N.C. lakes the EPA has sampled.
Alcoa has challenged the fish advisory, arguing the state didn't follow proper procedure in its fish tests.
"They
put out the fish advisory based on one bass," said Gene Ellis, a
company spokesman. "We just happen to believe that sends the wrong
message about Badin Lake."