NYC-WTC_000223700

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE yolumej1itersj2 1928 Lab Group #: 7425 Filter Type / Filter Area: MCE 385 mnr Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0,04496 rnm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4 15.02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or I Nr''3d& No F B C M >=05 p >=5p Chrys I Amphibole l Nonasa i Ampig/ND No Coord E e^ie' ts ; <5p

7 // tZSZZEZi

Struct = > 0.5u >5:1 Aspect Ratto Gnd aaeptance: 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 gnd squares <5% f ■ F B c: : M 7 = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ■AMPHIBOLES Amphibole P = Single Fiber Amosite 3 = Sundle (<3 fibers <1 fiber diameter apart Crocidolite .Ambicuous C = Cluster i>3 intersections) Anthophyllite Non-Asbestos I T remolite M = Matrix Actinolite ' Non-Identified NSD = No Structures Detected

CITY_21MC100_002919778

NYC-WTC_000223700