NYC-WTC_000199447

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: IS Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm- GRID BOX: Z5-V7 Magnification: 20,000 GRID ID: Accelerating \ oltage: 100 KeV # Grid Openings: 4 Analysis Date: 8,'25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length IC o! Structure N or ' EDS 4-^ No (NonaoD F B C M >=05 u Chrys Amphibole Nonasb .Fmbig./ND | No Coord ' <5u Elements) ,

J

j__ I I

I I I ' T

Struct = > 0 > 5 1 Aspect Ratio Grid acceptance

7= Positive diffraction pattern properties conforming to <50% undissolved filter overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

■ EDS spectrum conforming to laooratory least 20 unfolded or overlapped grid squares <5% F B C Nr I >5p holes or opaque areas identification critena observed Chrysotile AMPHIBOLES Amphibole = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite I Ambiguous u = Cluster (>3 Intersections) Antfiophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_0 03033990

NYC-WTC_000199447