NYC-WTC_000230018

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters’): 1920 Lab Group #: 7162 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 1 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 'Z EDS (Nonadb No F B C M j=05p >=5)J Chrys Amphibole Nonasb Ambig/ND No Coord Elements)

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

CONFIDENTIAL, CITY_21MC100_003388627 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230018