NYC-WTC_000218039

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6821 Filter Type / Filter Area: MCE ?S5 mm- Lab Sample #■. 5 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2'24/02

Analysis Performed By: lyf ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or v | EDS No Nonasb AmPig/ND i F B C M »05m :>=5p Chrys Amphibole Elements) No Coord <5m

rZ- Pf

ZP

...

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance; >1- Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed <10% particuiate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B i C i M : EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas Chrysotile i—r AMPHIBOLES 4___ t 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 Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002878279

NYC-WTC_000218039