NYC-WTC_000219540

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Nain^ NYC BOE Volume (liters): 1832 Lab Group #: 6942 Filter Tvpe / Filter Area: MCE 385 mm-' Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample 10 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3 6,02

Analysis Performed By: MARX PEYSAKHOV

GO Structure Structure Type Length 'D of Structure \ or \ ' No F 3 C M =05 p >=5pt Chrys Amphi0ole~r Nonasb I Ambtg/NO : ' No Coord <5p } i i EiementS! -------------- 1------ , _{--------------- 1--------------

•3

1“

f

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals latxjratory identification criteria observed <10% particulate coverage >60% coverage ate least 20 unfolded or overiapped grid squares <5% \ ' F B C M 'i- EDS spectrum conforming to laboratory holes or opaque areas i. .dentification criteria observeo ChiAsettle ' AMPHIBOLES Amphibole F -- Single Fioe- Amosite B ’■ Bundle i<3 libers <1 'iber diameter apar Crocidolite Anibiuuous C Cluster I >3 intersections) Antnopryllite \on-Asbestos ; Tremolite M = Matrix Actinolite Non-ldentified : NSD : No Structures Detected

CITY_21MC100_002881246

NYC-WTC_0002 19540