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OUTDOOR MONITORING

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World Trade Center Disaster Response Air Monitoring Data Summaries [PDF, 1 MB, 25 pages]
Exposure and Human Health Evaluation of Airborne Pollution From the World Trade Center Disaster

DATA

Interactively explore the data with:

EnviroMapper for NYC Response

Other agencies also monitored the air quality in and around New York:

Additional resources:

Presented below are a series of charts showing the results of environmental monitoring for several chemicals in the lower Manhattan area following September 11, 2001. The charts are available in two formats: HTML and PDF.

You can view the HTML charts using only your browser; follow the link to see the charts.

The PDF files use the Adobe Portable Document Format, which requires the free Adobe Acrobat Reader. You can learn more about the Reader and this format on EPA's PDF page. Note that the PDF files can be very large, and may take over 10 minutes to download.

Asbestos Monitoring
PCB Monitoring
Dioxin Monitoring
PM 2.5 Particulate Monitoring
PM 10 Monitoring

Asbestos

Long term trend maps of daily asbestos measurements All Lower Manhattan Sites: (9/15/01 - 5/25/02)
(PDF File - 734 KB)	Web (HTML) version
All Staten Island Landfill Sites: (9/20/01 - 5/16/02)
(PDF File - 789 KB)	Web (HTML) version

Monthly Maps with Trend Charts

EPA Fixed Air Monitoring Stations World Trade Center Area Asbestos TEM Results in S/mm2 Weekly Maximum & Weekly Average

See also: monitoring data for asbestos | benchmarks, standards and guidelines for asbestos

Dioxin

Dioxin air sample results: World Trade Center area (9/11/01-4/24/02)
(PDF File - 3.7 MB)	Web (HTML) Version

See also: monitoring data for dioxin | benchmarks, standards and guidelines for dioxin

PCBs

PCBs air sample results: World Trade Center area (9/11/01-4/24/02)
(PDF File - 860 KB)	Web (HTML) Version

See also: monitoring data for PCBs | benchmarks, standards and guidelines for PCBs

PM 2.5

24 Hour Average PM 2.5 Results
	DEC Monitoring Stations - 9/01-6/02 (PDF file - 2.2 MB) EPA ORD Monitoring Stations - 9/01-3/02 (PDF file - 1.4 MB)

See also: monitoring data for PM 2.5 | benchmarks, standards and guidelines for PM 2.5

PM 10

24 Hour Average PM10 Results (10/2/01-12/31/01)
(PDF File - 2.4 MB)

See also: monitoring data for PM 10 | benchmarks, standards and guidelines for PM 10

If you need Adobe Acrobat software to print or view these maps, the software can be downloaded for free by visiting http://www.epa.gov/epahome/pdf.html.