NYC-WTC_000200814

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet NYC BOE Volume niters): 1840 Lab Group #: 76-70 Filter Type / Filter Area: MCE 385 mmc

Lab Sample #: 8 Grid Oj)eiiing Siz^ 0.01124

Client Sample 08 Area Examined: 0.04496 mni=

GRID BOX: CYC Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/8/02

Analysis Performed By: fy

ROMAN PEYSAKHOV

GO. Structure Structure iype Length ID of Structure N or A EDS (Nonadb No F B C M >=05 U >=5iJ Chrys Amphibols Nonasb Ambig/ND Elements/ - No Coord <5p

aS© _ 1)___ 1/ t

Struct = >P.5p >5:1 Aspect Ratio Grid acceptance: nG Positive diffraction pattern properties conforming to <50% undissoved filter, overlapped or folded Totals laooratory identification criteria observed <10% particulate coverage >50%o coverage ate least 20 unfolded or overlapped grid squares <5% F B C M I >£p 7= ECS spectrum conforming to iaboratoy holes or opaque areas identificatiion criteria observed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart 1 Crocidolite Ambiguous C = Cluster l>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Noil-Identified Actinolite USD = No Structures Detected

CITY_21MC100_011275163

NYC-WTC_000200821