NYC 9/11 Public Portal Document
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time-weighted average for particulates.
VOCs - Sampling for volatile organic compounds (VOCs) was conducted on
October 11 in the smoke plume on the debris pile at ground zero. There was a
general increase in VOC levels, including benzene, compared to data collected on
October 10. Benzene exceeded the OSHA time-weighted average permissible
exposure level at two locations in the smoke plume.
Dioxin - Ten samples were collected on September 27 and analyzed for
« dioxin/furans. Two of the samples showed results above the guideline level at which
EPA would take some type of action to reduce people's exposure. This guideline
I® '' >*1 level assumes a 30-year exposure scenario. One of the samples (Location A at
'* West Broadway and Barclay) was nominally above the EPA guideline level when
fK-W adjusted to a 1 -year exposure duration. These levels do not pose a short-term
health affect but should be monitored if they persist for a longer period of time. All
' other locations had results that were generally lower than previous dioxin data
. „ reported on September 16 and 23.
Latest Available Dally Environmentai Mooitoring Summary
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' Resources for Information on the World Wide Web:
t^^^gtrnent of Labor's Occupational Safety and Health Administration
Ml New York City Department of Health ■■■H
US Department of Health and Human Services HMMHB
New York State Emergency Management Office MMBMI I
EPA information about the events of September 11
MS
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Last U^at^: Wednesday, October 17, 2001 09:47:05
URL: http://www.epa.gov/epahome/epa-osha101201 .htm
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