NYC-WTC_000202490

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 9204 Filter Type / Filter Area: MCE 385 tnm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: z5-7--72_,. Magnification: 20,000 GRID ID: Accelerating Voltage: iOO KeV # Grid Openings: 4 Analysis Date: L 2/23/200

Analysis Performed By: / ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or N EDS il (Nonadb No F B C M >=05 p >=5p Chrys Amphibole Norasb Ambig/ND

s No Coord <5p Elements)

JL 7- CL

Ll a

i i

I! 1

j ;1

I 1

M_________ _ I 'I I _ . . j j i !______ ___L__L_ z ^hoto No (from 1 in d asbestos contain ng samples) Grid acceptanGs: Struct = > 0 cp > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals 4= Positive diffraction pattern properties conforming to <10% oarticulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas B C M i 7= EDS spectrum conforming to laboratory ! 1 identification criteria observed Chryrsotile i AMPHIBOLES j ■Amphibole " = Single Fiber i Amosite ! 8 = Bundle (<3 titers <1 fiber diameter apart i Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite i Tremolite ) Non-Asbestos M = Matrix, Actinolite Non-Identified NSD = No Structures Deiecteo

CITY_21MC100_011276707

NYC-WTC_000202490