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EPA air monitoring data table and public health summary, Oct

Machine-extracted title · confidence 90%

Web page displaying asbestos structure measurements per square millimeter from air monitors with daily summaries and health concern levels.

NYC-WTC_000141101–000141102

Folder label: “EPA WEB”

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NYC 9/11 Public Portal Document

In the News - Headlines Page 1 of 2

US. CiivIrafMMiM FrofecWon

/ IW EPA Newsroom Horne | Recent Additions | ContacLUs Search: | Advanced Search

EPA Newsroom EPA Monitoring Site: Browse EPA Topics Church and Duane St. (no longer active) Laws & Regulations Asbestos Air Monitoring Data Where You Live Information Sources This table shows how much asbestos EPA measured in the air at this site, on the Educational Resources dates and times shown. Daily summaries of this data and how it compares to the About EPA level of concern for public health are provided on the EPA home page. Programs Business EPA can measure asbestos in several ways. For these data tables, EPA is Opportunities providing measurements in terms of the number of asbestos structures found per square millimeter within our air monitors (structures can include single, overlapping, Jobs and bundles of asbestos fibers). The level of concern for asbestos is based on Recursos en Espanol continuous exposure to more than 70 structures per square millimeter for an extended period. Because cleanup efforts will reduce asbestos levels h I <>5 dramatically over the next several weeks, EPA does not expect people exposed to this amount of asbestos to have increased risks of health problems.

Measurement (structures/square Date Time millimeter) 10/02/2001 no sampling 10/01/2001 no sampling 9/30/2001 no sampling 9/29/2001 no sampling 9/28/2001 no sampling 9/27/2001 no sampling 2:00 a.m. to 10:00 9/19/2001 not detected a.m. 9/18/2001 8:00 a.m. to 8:00 p.m not detected 9/17/2001 8:00 p.m. to 8:00 a.m not detected 9/17/2001 8:00 a.m. to 8:00 p.m not detected 9/16/2001 8:00 p.m. to 8:00 a.m 9/16/2001 8:00 a.m. to 8:00 p.m 9/15/2001 8:00 p.m. to 8:00 a.m not detected 9/15/2001 8:00 a.m. to 8:00 p.m 9/14/2001 8:00 p.m. to 8:00 a.m 32-

Best estimate: no flow information available

There may be gaps in daily readings because of relocated construction equipment and variations in sampling locations.

http ://www. epa. gov/air/nyc/mon-g.htm 10/5/2001

NYC-WTC_000141101

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NYC-WTC_000141101Source: NYC Law Department, mirrored locally

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