NYC 9/11 Public Portal Document
Ale
Air Testing After Sept..11 Attack:
Is Both Perplexing and Reassuring
NYC-WTC_000143152
By KIRK JOHNSON
The. ground-level atmosphere of
Lower Manhattan has become one of
the most intensely studied and sam-
pled environments on the planet. Air
monitors have been hung from trees
and strapped to the belts of truck
drivers. At least 11,000 people who
worked at ground zero have. had
chest X-rays. Thousands more have
been. interviewed by researchers.
What has‘ been learned, scientists’
_ say; Will Ha¥é @ far-reaching effect
on- urban disasters in the future.
Whether the Sept. 11 attack contin-
' yes,to have seridus repercussions on
’ the éfivironment and public health,
though, temains an open question as
the cleanup of the World Trade Cen-
ter site.nears completion. .
Mahy. scientists and physicians _
say the at¢uroulated evidence so far
suggests a glancing blow: thousands
of people developed coughs from the
firés and dust, or were nauseated by
the smells, Hut, most have fully rev
covered, The exposures, eveh to
things like asbestos, those experts
say, weré ‘ted short to cause wide-
spread cancer or other lung diseasés.
Ona scale of 1 ta 20, if a 10 is an event
like thé poisons gas release in ,
India, that killed thousanids in 1984,
anything over 5 leaves permanent
health consequences, aiid al has no
effect at all, then the trade center
attack appears to have been a 3 or a
4, according to an informal survey by
The New York Times of scientists,
doctors and researchers involved in
the health assessments. Others say it
is too soon to tell.
. What they agrée on is that he
many’ scientific and medical investi-
gations into the effects of Sept. 11 a
revealing an linforeseen complexity
-~ in the nature and.consequences of
the disasten, as well’ ag ii the under-
lying environment in a part of }
York that they say has never regily
re yhem investigators fromthe fink
versity pf calierniay at. Davis ere
studying the smoke near ground Zero
in October, for. example, they were
Surprised to find that other pollution
‘Was getting in the wa}.
One distineyive pattern that kept
slowing up was later tracked, by
aaa analysis to an oil-burning
lectricity plant on Staten Island.
The plant’s distinctive fihgerprint of .
hydrecarbon parti¢les onereed like |:
a ghost in the data, the researchers
said, unbidden and, until then, un-
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