NYC-WTC_000227950

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liteiSj: 'MO Lab Group 6832 Filter Type / Filter .Area: MCE . Lab Sample #: 8 Grid Opening Size: ii.Ol i24 Client Sample #: OS Area Examined: 111'14496 nim-

GRID BOX: GRID ID: My Magnification: Accelerating Voltage: 20.000 iOO KeV # Grid Openings: 4 Analysis Date: 2,26/02 Analysis Performed By: MZ

ROMAN PEYSAKHOV

GO. Structure Structure Type Length IO of Structure N or \ EDS No iNonadb F B C M =05 p >=5p Chrys Amphibole Nonasb | AmbiglND <5p Eiemertsl -------------- 1 i

/O -----

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties confoming to <50% undissolved filter, overiap^d orfolded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M ; ’5y EDS spectrum conforming to laboratory holes or opaque areas iOentification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Actinolite ! Non-Identified NSD = No Structures Detected

CITY_21MC100_002899499

NYC-WTC_000227950