NYC-WTC_000224820

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Vo 111 me (liters): 1920 Lab Group #: 7343 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 mm-

GRID BOX: Mai’nification: 20,000 GRID ID: i Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/6/02

Analysis Performed By: .MARK PEYSAKHOV

GO. I Structure Structure Type Length ID of Structure Nor y EDS (Nonadb No B C M , ^=05 p Ctirys Amphibole Nonasb TAmSg/Ng No Coord tlements) 1 <5u

Struct = > 0.ip >5:1 Aspect Ratio Grio accaorance

v- Positive diffraction pattern properties conforming to <50"'o ui dissolved niter overlapped or folded Totals laboratory identification criteria observed <10% .lerticulaie coverage >50% coverage ate leas; 2t infolded o. overlapped grid squares <5% •' F B C M >5p N= EDS spectrum conforming to laboratory holes . - opaque areas identification criteria observed Clii-' sotile \2dPHIBOLES Anipiiibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart D'ocidolite Ambieuous C = Cluster (>3 Intersections) Anthophyllite Non-Asnestos M = Matrix Tremolite Actinolite ! Non-lde:: titled NSD = No Structures Detected

CITY_21MC100_002894682

NYC-WTC_000224820