NYC 9/11 Public Portal Document
TRC
Customer-Focused Solutions
September 26, 2002
Mr. G. Foster Mills
Managing Attorney
New York City Law Department
100 Church Street
New York, New York 10007
Re: Report of Ongoing Air Monitoring Performed On August 2, 2002
TRC Project Number: 35052-0000-00011
Dear Mr. Mills;
TRC Engineers, Inc. (TRC) performed air monitoring on August 2, 2002 m the space occupied
by New York City Law Department and exterior to 100 Church Street as part of the ongoing air
monitoring program.
Representative samples for Metals, Asbestos, Carbon Dioxide, Carbon Monoxide, Temperature
and Relative Humidity were collected outside and inside the building on the 4*, 5* and 6* floors.
Most results were below the analytical detection limit and all were below (i.e., better than) the
respective Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit
(PEL). A copy of the test results along with OSHA permissible exposure limits for detected
parameters is attached.
The results of this on-going sampling effort support and confirm TRC’s recommendation in the
April 8, 2002 Environmental Health Risk Assessment report to reoccupy the space.
Should you have any questions or comments, please feel free to contact us at (212) 563-3933.
Sincerely,
TRC ENGINEERS, INC.
Nitin Dave, CIH, CSP, PE
Senior Project Manager
Enclosure
Cc; Mal Higgins - NYCLD
Susan Kath - NYCLD
134 West 29th Street, 11th Floor • New York, New York 10001
Telephone 21 2-563-3933 • Fax 212-349-4648
CITY_21 MCI 00_014584758
NYC-WTC_000177270
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