NYC 9/11 Public Portal Document
TRC
Customer-Focused Solutions
September 30, 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 30, 2002
TRC Project Number: 35052-0000-00011
Dear Mr. Mills:
TRC Engineers, Inc. (TRC) performed air monitoring on August 30, 2002 in 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 Total Dust, 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, 1 1th Floor • New York, New York 10001
Telephone 212-563-3933 • Fax 212-349-4648
CONFIDENTIAL INSURANCE INFORMATION, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT 2008 CITY_21 MC1 00_014676300
NYC-WTC_000174453
OCR can misread numbers and units. Confirm readings against the page image before using them.