NYC-WTC_000230023

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 7162 FilterJ[v2e 2Filter.Areac MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 6 Area Examined: 0.04496 mm' GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M >=05 u >=5j Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

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Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: N = Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification critsne observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5u y = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ) AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos M = Matrix ; Tremolite Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3388632 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230023