NYC-WTC_000201012

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: , _ NYC BOE Volume fliters): 1805 Lab Group #: 7S02 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/20/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. J Structure Structure Type Length ID of Structure N or A EDS “ No (Nonadb F 3 C M >=05 p >=5(J Chrys Amphibole Nonasb Ambig/ND . No Coord <5p Elements)

Z Ol ■

■

■ Struct = > 0. > 5:1 Aspect Ratio Grid acceptance; s

y? ) Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Tot^ laboratory Identification criteria observed <10% particulate coverage >50% coverage ate least 2C unfolded or overlapped 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 Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) ■ Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

NYC-WTC_000201024