NYC-WTC_000222791

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1872 Lab Group #: 6933 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnit'ication: 20.000 GRIDID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By; . - ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 9 EDS I No' >=05 p ~(Wonadb ( F B C M Chrys Amphibole Nonasb Ambig/ND No Coord Elements)

3Z^ ------ 1 if f(

Struct = > l).5p > 5:1 .Aspect Ratio Grid acceptance; \= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% i F B C M ! >5u v'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observeb Chrysotile A.MPHIBOLES 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 i Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO2918934

NYC-WTC_000222791