Public information sheet explaining asbestos properties and its presence in World Trade Center materials and debris.
NYC-WTC_000153317–000153318
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
DRAFT What are the federal guidelines regarding asbestos?
In the 198O's, the Environmental Protection Agency (EPA), enacted standards to protect children upon reentry to schools that had undergone asbestos removal operations. Scientists collected air samples in the schools through filters that capture the asbestos fibers so they can be counted with a microscope. The measurement of these fibers or “structures” must not exceed 70 per square millimeter of the filter paper before children are allowed inside. There are other federal standards developed for different circumstances, such as worker protection, that are less protective and are measured differently. However, to be as protective as possible of people living and working in the World Trade Center area and beyond, EPA is using the school re-entry standard. Levels above 70 asbestos structures per square millimeter do not imply an immediate health threat. The Environmental Protection Agency (EPA) has collected data and is evaluating these against a variety of established standards and guidelines for the various pollutants it is monitoring from the air, water and dust in and around the World Trade Center (WTC) disaster site.
Comparisons to these standards are done to protect public health. EPA considers the amount of time a person is exposed to the pollutant and the location, such as a school, workplace or home in setting these standards.
For additional information, please visit the New York City Department of Health (NYCDOH) web site at: htip://www/nyc.pov/html/doh^ome.html
Latest Revision 10/8/01 11:43 p.m.
NYC-WTC_000153318
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Draft informational document explaining asbestos properties and its presence in World Trade Center materials and debris.
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EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.
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Letter from the NYC Department of Health dated February 8, 2002, summarizing environmental sampling and asbestos testing results at a residential building.
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OSHA letter to the EPA providing a description of asbestos monitoring data used for selecting personal protective equipment for cleanup contractors.
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