NYC-WTC_000208270

NYC 9/11 Public Portal Document

TEM Asbesfos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1912 Cat) Group #: 8828 Filter Type / Filter Area: MCE 385 mm-’ 121h Saniple/t: 23 Grid Opening Size: 0,01124 ChenCSany^e^ 23 Area Examined: 0.04496 mm- GRID BOX: Magnification: dq 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/1 0/02

Analysis Peril rmed By: MARK PEYSAKHOV

GO. J Structure Structu'e Type Length D of Structure N or v EDS No fNonadP i F i B ‘ C M >=05 p 1>=5p Chrys Amphibole j Nonasb ' Ambig/ND No Coord I <5p Eements) :

___ .i? ^22

Struct = > 0.5^ >5;l Aspect Ratio Grid acceptance:

\ = Positive diffraction pattern properties conformi ,g to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria ccserrec <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B ! C i M \ = EDS soectrum conforming to laboratory holes or opaque areas l icentification criteria observed Chrvsottle .amphiboles Amphibole F = Single Fiber Amosite B = Buiiule (<3 fibers <1 fioer diameter apart Crocidolite AmbmuoLis C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003021284

NYC-WTC_000208270