NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 23 Grid Opening Size: 0.01124

Client Sample #: 23 Area Examined: 0.24728 mm^

GRID BOX: zvr? Magnification: 20,000 GRID ID: 14^ Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C >=05 (J >=5p Chrys Amphibole Nonasb Ambig/ND No I Coord <5p Elements)

zJ'

> V v! VVy 7

/ I //W 32^

3X2=. _

Photo No. (from 1 in b asbestos containing samples) 77 Grid acceptance: Struct = > 0.5u > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals v= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observeo least 20 unfolded or overlapped grid squares <5% j" holes or opaque areas p B EDS spectrum conforming io laboratory Chrysotile identification cntena observed I 1 AMPHIBOLES Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous | C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos j I Tremolite M = Matrix Non-Identified । Actinolite NSD = No Structures Detected ___ L......

CITY_21MC100_003069456

NYC-WTC_000202912