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EPA Asbestos Air Monitoring Data Table, Sept-Oct 2001

Machine-extracted title · confidence 100%

Table showing asbestos measurements in the air at a specific site with dates and times from September to October 2001.

NYC-WTC_000141127–000141128

Folder label: “EPA WEB

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Scanned page image, NYC-WTC_000141128
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NYC 9/11 Public Portal Document

■ ‘In the News - Headlines Page 2 of 2

9/25/2001 2:00 p.m. to 7:00 p.m. not detected . 2:00 a.m. to 2:00 9/24/2001 14.8 p.m. 9/23/2001 2:00 p.m. to 2:00 a.m 14.8 4:00 a.m. to 4:00 9/22/2001 14.8 p.m. 9/22/2001 4:00 a.m. to 4:00 DUP p.m. 74.1*

10.00 a.m, to 3:00 9/21/2001 120* p.m. 2:00 a.m. to 10:00 9/20/2001 not detected a.m. 5:00 p.m. to 2:00 9/19/2001 not detected a.m. 2:00 a.m. to 10:00 9/19/2001 not detected a.m. 9/18/2001 8:00 a.m, to 8 p.m, not detected 9/16/2001 8:00 p.m. to 8:00 a.m 27.4 9/16/2001 8:00 p.m. to 8:00 13.7 DUP a.m. 8:00 p.m. to 8:00 9/15/2001 53.3 a.m. 8:00 p.m. to 8:00 9/15/01 DUP 90** a.m. 8:00 p.m. to 8:00 9/14/2001 48’ a.m.

* This reading exceeds the EPA benchmark. It may not indicate increased risk, however, because these are “snapshots," rather than long-term exposure measurements. Weather and recovery activities at the World Trade Center can cause temporary variations in asbestos levels that affect these snapshots.

**Best estimate: no flow information available.

DUP - indicates that more than one sample was taken at a particular time; all values are reported.

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

For more information about asbestos, see the fact sheet Department of Health and Human Services' Web site. ■■■■ from the SPA Newsroorn | FAQs

This page originally created; Wednesday, September 26, 2001

EPA Horne | Priyacy and Security Notice | Contact Us Last Updated: 10/04/2001 19:30:24 URL: http://www.epa.gov/air/nyc/mon-e.htm

http://www.epa.gov/air/nyc/mon-e.htm 10/5/2001 NYC-WTC_000141128

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NYC-WTC_000141128Source: NYC Law Department, mirrored locally

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