NYC-WTC_000229062

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme (liters): 1808 Lab Group #: 7858 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 0,01124 Client Sample #: 15 Area Examined; 0.04496 mm-’

GRID BOX: Magnification: 20,000 GRID IP: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure T/pe Length ID of Structure N or V £03 No «65m '>=5m (Nonadb F B C M Chrys Amphtbofe Nonast) Ambig/NO No Coord <5u Elements)

1

Struct = >0.5p >5:i Aspect Ratio Sridawaptance: Positive diffraction pattern properties contorming to <50% undissolved filter, ovarapped or folded Totals laboratory identification ciiteria observed e1Q% partiailate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5m v= EDS spectrum conforming io laboratory holes or opaque areas idenSfication criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S s Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthopfiyliite Non-Asbestos Tremolite M = Matin Actinolite Non-Identified N3D = Na Structures Detected

CITY_21MC100_002902126

NYC-WTC_000229062