NYC 9/11 Public Portal Document
ambient group inc. NATIONAL HEADQUARTERS
Indoor environmental quality surveys 55 WEST 39,H STREET
I2h FLOOR
Water treatment consulting
NEW YORK, NEW YORK io018
Asbestos & lead field services
TEL:(ziz) 463-78iz
Regulatory compliance programs FAX: (212) 463-9397
Air, water & soil analytical laboratories WEB: WWW.AMBIENTGROUP.COM
September 17, 2001
Mr. Elliot Zuckerman
Cushman & Wakefield
a/a/f Mercantile Exchange
One North End Avenue
New York, New York 10282
Re: One North End Avenue
Ambient Project #211338
Dear Mr. Zuckermen:
The following is a summary of the indoor environmental quality survey that Ambient Group,
Inc. performed on September 14th, 2001 at the above referenced location. The survey included
sampling for levels of background gaseous parameters, airborne dust characterization and air
sample collection for TEM analysis, as well as absence/presence of asbestos in settled dust.
Analysis of all indoor gaseous air quality parameters, which included carbon dioxide, carbon
monoxide, and total volatile organic compounds groups I and group 11 revealed that all indoor
readings were below OSHA, ACGIH, ASHRAE and other recommended industry guidelines
and/or regulations.
Seven (7) air samples were collected from various locations on floors 3, 7, 10, 11, 13, 15 and
lobby analyzed by transmission electron microscopy (TEM). for asbestos structures. The
results of the analysis indicated that airborne asbestos levels at the time of testing were less
than the analytical sensitivity of the instrument, as well as well below the EPA standard of 70
structures/mm2 and other recommended industry guidelines and/or regulations.
Seven (7) air samples were collected from various locations on floors 3, 7, 10, 11, 13, 15, and
lobby and analyzed for dust characterization. The samples were composed primarily of fungal
spores, skin fragments, gravel road dust, carbon particles, and cement dust. Although the
concentrations of carbon particles, cement dust, skin fragments and fungal spores were
slightly elevated, the levels detected should not pose any adverse health concerns to the
building occupants.
GLEN COVE, NY MIAMI, FL CHICAGO, IL ORANGE, CA
516 609-0009 305 86o-oioi 312 527-5526 714 282-2525
NYC-WTC 000097824
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