NYC-WTC_000228906

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7741 Filter Type / Filter Area: MCE 385 Lab Sample #: 3 Grid Opening Size: 0.01124 •Client Sample #: 05 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20 000 GWDTO: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor V EDS No (htonadb F 8 C M >=05 p >|=5p Chrys Amphiboie Nonasii Ami;jg.-ND No Coord <5)J Etemerts)

a

Struct 0-5)4 > 5:1 Aspect Ratio Grid acceptance: V Pssitive diffraction pattern propertes conforming to <50% undissdiwed fitter, ouettapped or folded Istoste^ idencricsticn criteria obseived <10% partcutate coverage >50% coverage ate least 20 unfoWsd or cveiiapped grid squares <5% F B C M ■ EDS Spectrum conforming to latrotatory holes Of opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F 3 Single Fiber Amosite B s Bundle (<3 fibers <1 fiber diamefer apart Crocidolite Ambiguous C Cluster (>3 intersections) Arthophytlite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldcntified NSD = No Structures Detected

CITY_21MC100_002901876

NYC-WTC_000228906