NYC 9/11 Public Portal Document
DEC -21-2001 10:49 AM AET INC. 732 321 3666 P.02
■ Accredited Environmental Technologies, Inc.
■ December 21,2001
■ Ms. Carolyn Baiiley
CCMH Fin Center LLC
■ c/o Claris Services Corporation
■ 6903 Rockledge Drive, Suite 920
Bethesda, MA 20817
■ RE: New York Financial Center Marriott, 85 West Street, New York, New York
Dear Ms. Bailey.
■
■ Attached are the laboratory results for airborne asbestos samples collected at the above rem
location. These samples were collected and analyzed by Accredited Environmental Technologies,
■ Inc. for comparison with the clearance standards for airborne asbestos established by the New
York City Department of Environmental Protection Asbestos Control Program (Title 15,
■ Chapter 1). Sample collection occurred under normal occupancy conditions on December 19,
2001. All samples were collected with high volume sampling pumps with sample durations of
■ approximately five hours and are considered representative of background fiber concentrations
throughout the first three floors of the building.
■ Results indicate that fiber conoentratlons in the background samples were all below 0.01 F/cc, a
level considered acceptable fbr occupancy according to the Department of Environmental
■ Protection standards, with the exception of one sample from the 1" Floor which could not be
analyzed due to overloading with construction debris from an adjacent demolition operation.
■
Samples were analyzed by Phase Contrast Microscopy per NIOSH Method 7400 for asbestos
■ fibers. This method measures total airborne fibers and does not distinguish fiber morphology. All
■ structures with a length to diameter ratio of 3 to 1 or greater and a length greater than 5 microns,
are considered to be fibers and are counted as such.
■ If you have any questions or require additional information, please do not hesitate to contact our
■ office.
■ Sincerely,
■
Eric Houseknecht
■ Vice President
■
■
■ 335 High Street • Metuchen, NJ 08840 • (732) 321-0666 • FAX: (732) 321-3666
NYC-WTC 000131229
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