Document fragment from DEP Box 53 regarding West Street

NYC 9/11 Public Portal Document NOV-09-2001 09:52 AM AET INC. 732 321 3666 P.02

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• Accredited Environmental Technologies. inc.

• November 9, 2001 • Ms. Carolyn Bailey CCMB Fin Center LLC c%oClaris 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 referenced • 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 November 7, 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 as well as the basement of the building.

• Results indicate that fiber concentrations in the background samples were all below 0.01 F/cc, a level considered acceptable for occupancy according to the Department of Environmental Protection standards.

Samples were analyzed by Phase Contrast Microscopy per NIOSI-I 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,

a ric Houseknech Vice President EH/bg ■

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■ 335 High Street • Metuchen, NJ 08840 • (732) 321-0666 • FAX: (732) 321.3666

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NYC-WTC 000131246