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NYC-WTC_000234747

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NYC 9/11 Public Portal Document

Summary of Asbestos Sampling Results Page 1 of 2

Address: 49 Fulton St Date sampled: Nov 29, 2001

Dust samples Fibrous materials in dust found by Polarized Light Microscopy (PLM) Analysis: Polarized Light Microscopy identifies asbestos fibers by shape and optical characteristics. Other fibers such as fabric (synthetics), paper (cellulose) and fiberglass may be identified in the analysis. The laboratory analyst counts the fibers present to give an estimate of fiber content as a percent.

4rea Sampled Outside Common Residence 1 Residence 2 Sample Numbers No Dust VA-C-23 VA-Rl-23 VA-R2-23 Available

Asbestos present in dust: No Dust Chrysotile asbestos Available None Detected None Detected None Detected

Asbestos in dust as determined by Transmission Electron Microscope (TEM) Analysis: TEM analysis was conducted on all dust samples, which showed asbestos content, by PLM as less than 1%. TEM analysis is very specific, can detect smaller fibers of asbestos and is sensitive to fewer interferences. This analysis was done to confirm the PLM findings of no asbestos shown above.

Area Sampled Outside Common residence 1 Residence 2 Sample Numbers No Dust VA-C-23 A-Rl-23 VA-R2-23 Available Asbestos present in dust No Dust None Detected one Detected None Detected Chrysotile Available

C:\Documents and Settings\sbenson\Local Settings\Tempcrary Internet Files\0LK3\Summary of Asbestos Sampling Resultsl22891.doc

CITY_21MC100_008831043

NYC-WTC_000234769

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NYC-WTC_000234769Source: NYC Law Department, mirrored locally

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