NYC-WTC_000199427

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Nanic; NYC BOE Volume (liters): 1944 Lab Gi ou|) 8100 Filter Type / Filter Area: MCE Lab Sample ft: 13 Grid Opening Size: 0,01 124

Client Sample ft: 13 Area Examined: 0,04496 mm-'

GIUD BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV ft Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N j EDS y —■ No F B C M '=05 u Chrys Amphibole Nonasb , No Coord i <5p ' elements)

//7 / fif 2

Struct = > 0.5p > 5; 1 Aspect Ratio Grid acceptance;

N= 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 grid squares <5% F B >5u 4= EDS spectrum conforming to laboratory holes or opaque areas identification ertera ooserved Chrysotile AMPHIBOLES Amphibole F : Single Fibe' Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I I C = Cluster (>3 ntersections) Anthophiyllite Tremolite Non-Asbestos ■ j------------------------L 1 r M. = Matrix Non-Identiried NSD = No Slruclu-es Detected Actinolite 1 i 1

CITY_21MC100_0 03033931

NYC-WTC_000199427