NYC-WTC_000217893

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 6645 Filter Type Filter Area: •MCE 3S5 mnh- Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: <1.64496 miTi-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2.12/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length IC of Structure N or y ! EDS ; No F B C w >=05 M Chrys Amphibole Nonasb i Amcig/ND i j i Eiemenis) ; No Coord <5u

Struct = > 0.5p .> 5; I Aspect Ratio Grid acceptance: ■■1= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particuiate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% I F ; B i C ; M ) 4- EDS spectrum conforming to laboratory holes or opaque areas identification critena observed Chrysotile i AMPHIBOLES Amphibole I i r F = Single Fiber Amosite Crocidolite Ambiguous E = Bundle i<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M - Matrix Actinolite Non-Identified i NED = No Structures Detected

CITY_21MC100_002878025

NYC-WTC_000217893