NYC 9/11 Public Portal Document
02/13/2002 1219 FAX. 2129444818 AMBIENT GROUP 16002
ambient group inc. NAnON,L HELnptr*R7r%U
Indoor eiwtronmentat quality surveys 55 wrsr f9.., QrPFLrf
Water treatment consulting 22.m FLOOR
Asbestos rs lead field services NSW YORJL NEW mRr. 50018
TEL (2 Si) 944.4615
Regulatory compliance programs
FAX (zZz) 944-4618
Alf, water f: soft analytical laboratories
WE! WWW.AMNarGROIF.COM
February 12, 2002
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. Zuckerman:
The following is a summary of the indoor environmental quality survey that
Ambient Group, Inc.
performed on February 7, 2002 at One North End Avenue. The survey included
sampling for airborne
metals (including silica scan), polynuclear aromatic hydrocarbons and airborne
asbestos structures by
TEM.
Four (4) air samples were collected from floors 3, 7, 12 and from the lobby and
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 instrlmient,
well below the EPA standard of 70 structures/mm2 as well as other iecommended industry which is
and/or regulations. guidelines
Four (4) air samples were collected from floors 3, 7, 12 and from the lobby and analyzed
for metals in air
(including silica). All measured metals revealed levels well below th eir respective
OSHA PELs and
NIOSH RELs. Levels of cristobalite and quartz detected in the silica scan were also below
the NIOSH
REL of 0.05 mg/rn3.
Four (4) air samples were collected from floors 3, 7, 12 and from the lobby and analyzed for
polynuclear
aromatic hydrocarbons in air. Analysis of all four (4) samples collected revealed
that the levels of the
individual compounds were below the OSHA Permissible Exposure Limits and NIOSH REL
guidelines.
Please refer to the attached laboratory data sheets for further details. Should you have any
questions
regarding this information, please feel free to call me.
sincerely,
Signed for Ambient Group, Inc. by:
1 > t t'Etl-er
Vice President
JUnt
CLEN ctwi, NY UTAM FL cMXC&GO £J CORONA, CA
516 609.Qoo9 305 860w1o, 31- 5=7-5545 909 8 7 1 -4790
211339
02/13/02 WED 13:16 ITX/RX NO 93011
NYC-WTC 000097558
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