NYC-WTC_000218324

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6954 Filter Type / Filter Area: MC'E 385 mm- Lab Sample#: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0,04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/7/02

Analysis Performed By: ROMAN PEYSAKHOV

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

I-

Struct = > 0.5p > 5;i Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C ' M ' >5, ^= EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Actinolite Non-Identified 7—r NSD = No Structures Detected

CITY_2IMCl00_000466297 NYC-WTC_000218324