NYC-WTC_000218057

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 6840 Filter Type / Filter Area: MCE 385 rr.m- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.0449b mm-

GRID BOX: Magnification: 20,000 GRID ID : Accelerating Voltage: 100 KeV # Grid Opeoings: 4 Analysis Date: 2/27/02

Analysis Performed By: MARK PEYSAKHOV

GO. - Structure StructureType Length ID of Structure N or v EDS No' iNonadb F B C M >=05 p :>=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5u I Elements) ;

ZZZ^Z _ eg

Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: yl- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B i C {Ml >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Cluysotilc i ------------- j— { i ■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 = Matrix Actinolite Non-identified NSD = No Structures Detected

CITY_21MC100_000465808 NYC-WTC_000218057