NYC 9/11 Public Portal Document
r.lv 14 r. VVO/vv4
104 East 25th Strout
New York. Now York 10010
www.etc-erw1ro.00m
212.333.8280
Foxe 212.383.8306
VIA FACSIMILE: 212-206-5680 (1 page)
October 8. 2001
Mr. Brian Becker
Time Equities Management
55 Mfth 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 summary report presenting the asbestos
ambient air sample results for 47 West Street and 80 Washington Street.
On September 26, 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 26, 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, Appendix 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 (670 s/mm2).
Summary of Ambient Air Sample Results
Based upon the analytical results of less than 70 asbestos structures per square millimeter (c70
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 explaination of the information
presented please do not hesitate to call me at 212-353-8280
sincerely,
Fr d Burkhardt
Senior Project Manager
ATC Associated Inc.
3;17_ 0645-37L
NYC-WTC 000110043
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