NYC-WTC_000214428

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volii Ilie (.iters}: 1920 Lab Group #: 7855 Filter Type / Fi j, \!ea: MCE 385 mm^ Lab Sample #: 1 Grid Ope:... ■ 'YC: 0.01124

Client Sample #: 01 AreaE.. ..hied: 0.04496 mm^

GRID BOX: • ‘-ion: 20,000 GRID ID: Acceler.tiiii:,- A .tage: 100 KeV # Grid Openings: 4 AY4 4?- Date: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ICcfS...,- N or 4 EDS No (Nonadb F B C M >=05 p :>=5|J Chrys Ampii... Ambig/ND No Coord <5p Elements)

4-

Struct = > 0.5)1 > 5:1 Aspect Ratio Grid acceptance: ■7= Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laboratoiy identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 4= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed :e AMPHIBOLES e F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite N Tremolite M = Matrix Noi ■ . ed Actinolite NSD = No Structures Detected

CITY_2 IMCl 0 0_Ci 00462794 NYC-WTC_000214428