Document fragment from DEP Box 53 regarding West Street

NYC 9/11 Public Portal Document OCT-26-2001 12:52 PM AET INC. 732 321 3666 P_02

■ Accredited Environmental Technologies, Inc.

■ October 26, 2001

■ Ms. Carolyn Bailey

■ CCMH Fin Center LLC c% Claris Services Corporation ■ 6903 Rockledge Drive, Suite 920 Bethesda, MA 20817

RE: New York Financial Center Marriott, 85 West Street, Now York, New York ■

Dear Ms. Baley:

■

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, S Inc. for comparison with the clearance standards for airborne asbestos established by the New York City Department of Enviromnental Protection Asbestos Control Program (Title 15, Chapter 1). Sample collection occurred under normal occupancy conditions on October 25,2001. 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 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 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 I or greater and a length greater than 5 microns, ■ are considered to be fibers and are counted as suck

ll you have any questions or require additional information, please do not hesitate to contact our a

office.

■ Sincerely,

■ Eric House t ■ Vice President ER/bg ■

■

. 335 High Street • Metuchen, NJ 08840 • (732) 321-0666 • FAX: (732) 321-3666

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NYC-WTC 000131257