NYC-WTC_000202313

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYG BOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 9 Grid Opening Size: 0.0112A Client Sample #: 11 Area Examined: 0.04496

GRTD BOX: , Magnification: 20,000 GRIPED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure lype Length ID of Structure n qj 2 EDS , No (Nonadb F B C M >=05 p r >=5p Ghrys Amphibole Nonasb Amoig/ND No Coord <5p - Elements)

T 3

i Photo No, (from 1 in b asbestos containing samples). Grid acceptance: Struct = > 0.5p, > 5:1 Aspect Ratio <5C% undissolved filter, overlapped or folded Totals -7= Positive diffracrion pattern properties conforming to <1C% particulate coverage >50% coverage ate laboratory identification criteria Observed least 20 unfolded or overlapped grid squares, >5p- <5% holes or opaque areas F ■ B i C M 7= EDS spectrum conforming to laboratory identification criteria observed Chrysotile AMPHIBOLES F = Single ,'iber , Amphibole Amosite B = Bundle (<3 fibers <' fiber diameter apart Crocidolite Ambiguous Anthophyllite C = Cluster (>3 Intersections). Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified NSD = No Structures Detected,

CITY_21MC100_011276463

NYC-WTC_000202313