Outdoor Monitoring

Related Information

After September 11, EPA and other federal, state and local agencies collected extensive environmental monitoring data from the World Trade Center site and nearby areas. The Agency took samples of the air, dust, water, river sediments and drinking water and analyzed them for the presence of pollutants that might pose a health risk to response workers and the public. The samples were evaluated against benchmarks, standards and guidelines established to protect public health. EPA collected data from more than 30 fixed air monitors in and around ground zero and additional monitors in the Bronx, Brooklyn, Queens, New Jersey and Staten Island. EPA also used portable sampling equipment to collect data from a range of other locations.

Please use the links below and to the right to navigate through available information.

Monitoring Information by Pollutant
Asbestos in Air	- Benchmarks, Standards and Guidelines - Monitoring Data [html \| downloadable .zip file] - Charts and Maps
Asbestos in Bulk Dust	- Benchmarks, Standards and Guidelines - Monitoring Data [html]
Benzene in Air	- Benchmarks, Standards and Guidelines - Monitoring Data [html \| downloadable .zip file]
Chromium in Air	- Benchmarks, Standards and Guidelines - Monitoring Data [html]
Dioxin in Air	- Benchmarks, Standards and Guidelines - Monitoring Data [html] - Charts and Maps
Drinking Water	- Benchmarks, Standards and Guidelines , - Monitoring Data [html]
Lead in Air	- Benchmarks, Standards and Guidelines , - Monitoring Data [html]
Metals in Air	- Benchmarks, Standards and Guidelines , - Monitoring Data [html]
Particular Matter, Coarse (PM 10) in Air	- Benchmarks, Standards and Guidelines , - Monitoring Data [html ] - Charts and Maps
Particular Matter, Fine (PM 2.5) in Air	- Benchmarks, Standards and Guidelines , - Monitoring Data [html \| downloadable .zip file] - Charts and Maps
PCBs in Air	- Benchmarks, Standards and Guidelines , - Monitoring Data [html \| downloadable .zip file] - Charts and Maps
Polycyclic Aromatic Hydrocarbons	- Benchmarks, Standards and Guidelines , - Monitoring Data [html \| downloadable .zip file]
Volatile Organic Compounds (VOCs)	- Benchmarks, Standards and Guidelines , - Monitoring Data [html \| downloadable .zip file]