September 11, 2001 : Attack on America
Daily Environmental Monitoring Summary; November 11 & 12

Daily Environmental Monitoring Summary

Sunday & Monday, November 11 & 12

The U.S. Environmental Protection Agency (EPA) and other federal, state and local agencies have collected extensive environmental monitoring data from the World Trade Center site and nearby areas in Manhattan, Brooklyn and New Jersey. Since September 11, EPA has taken 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 at the World Trade Center site and the public. The samples are evaluated against a variety of benchmarks, standards and guidelines established to protect public health under various conditions. EPA is collecting data from more than 20 fixed air monitors in and around ground zero and additional monitors in the Bronx, Brooklyn, Queens and Staten Island. The Agency is also using portable sampling equipment to collect data from a range of locations.

Results as of 5:00 p.m. on 11/12

Air: Fixed Monitors in New York:

Asbestos - EPA analyzed 39 samples taken in and around ground zero from November 8 through November 9. All samples showed results less than 70 structures per square millimeter, which is the Asbestos Hazard Emergency Response Act (AHERA) standard for allowing children to re-enter school buildings after asbestos removal activities. This brings the total number of air samples collected and analyzed for lower Manhattan to 1,968, with 28 samples above the standard (27 were collected prior to September 30 and one was collected on October 9).

Staten Island Landfill:

Air (Asbestos) - Fifty-four samples collected from November 8 through November 9 were analyzed for asbestos. All but one were below the school re-entry standard.

U.S. Government Website

September 11 Page

127 Wall Street, New Haven, CT 06511.