NYC-WTC_000200915

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme (liters): 1840 Lab Group #: 7739 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 8 Grid Opening Size: 0.01124 •Client Sample #: 08 Area Examined: 0.04496 ■ mm- GRID BOX: Magnification: 20 000 GRID ID: 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 N or </ EDS . No (Nonadb .F B C M >-05.. >=5p Chrys Anphibole Nonasb Ambig/ND No Coord <5 J Elements)

-

Struct/-> 0.5p > 5:1 Aspect Ratio Qrid acceptance: :5

•'/- Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <1'0% particulate coverage >50% coverage ate . least 20 unfolded or overlapped grid squares <5% F B C M »5p. • ?/= EDS spectruni 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-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011275251

NYC-WTC_000200922