NYC-WTC_000201989

NYC 9/11 Public Portal Document

TEM Asbestos fairV Count Sheet Client Name: NYC BOE Volume flitersb 1840 Lab Group #: 7203 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: .14 Area Examined: 0.04496 rmr? GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/25/02- < ■

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N ' EDS- . :{- /(Nonadb / No ~F B C M . >=06p I ” •=5p Chrys Amphibole Nonasb Ambig/ND Elements) .1 No Coord <5u AW' i W'zz-z

■ - i I' Struct—> 0.5u > 5:1 Aspect Ratio Grid acceptance: /= Positive diffraction pattern properties conforrtiing to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B: G M i >5|J '/= EDS spectrum-iconforming tolaboratory holes or opaque areas , identfication criteria observed Chrysotile i AMPHIBOLES i i Amphibole F - Single Fiber i \ i Amosite r B - Bundle (<3 fibers <1 fiber diameter apart i Crocidolite , J Ambiguous C- Cluster (>3 Intersections) - Anthophyllite i Non-Asbestos - y Tremolite : ’ M = Matrix Non-Identified Actinolite ’ ; NSD = No Structures Detected r i

CITY_21MC100_011275946

NYC-WTC_000201989