NYC 9/11 Public Portal Document
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104 East 25th Street
,~ ,,~3•zz. `~ -ate. New York , New Yotit 10010
www.ato•erwlro.00m
212.333.8280
r,ox 212.353.8306
ViA FACSIMILE: 212-206-5680 (1 page)
October 8, 2001
Mr. Brian Becker
Time Equities Management
$5 Fifth Avenue, 15`" Floor
New York. NY
RE: Asbestos Ambient Air Sampling Results
47 West Street and 80 Washington Street
Dear Mr. Becker.
ATC Associates Inc. (ATC) is pleased to submit this summery report presenting the asbestos
ambient air sample results for 47 West Street and 80 Washington Street.
On September 25, 2001 ATC collected a total of thirty ambient air samples from within 47 West
Street followed by the collection of 11 eleven ambient air samples from within 80 Washington
Street on September 28, 2001 to ascertain the presence or absence of airborne asbestos. All
samples collected were analyzed In accordance with the AHERA Transmission Electron
Microscopy (TEM) method as set forth at 40 CFR Part 763, Subpart E, Appehdix A. Acceptable
ambient air samples results are those sample sets meeting the AHERA re-occupancy
requirement following an asbestos abatement action of an average of less than 70 asbestos
structures per square millimeter (<70 s/mm2).
Summary of Ambient Air Sample Results
47 West Street I Ali samples <70 S/mm`
I :su v'dashincltan Street I All samples <70 s/mm
i3ased upon the analytical results of less than 70 asbestos structures per square millimeter (<70
s/mm2) which Is within.the AHERA clearance requirement, It is ATC's opinion that the ambient
air samples collected throughout the two buildings meet an acceptable criterion for re-
occupancy. if you have any questions or require additional expiaination of the information
presented please do not hesitate to call me at 212-353-8280
Sincerely,
Fr d Burkhardt
L2U4
Project Manager
ATC Associates Inc.
P11
NYC-WTC 000094689
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