NYC-WTC_000189047

NYC 9/11 Public Portal Document

TEM Asbestos ( air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 5927 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0,01124

Client Sample #: 7 Area Examined: 0.04496 min-

GRID BOX: Maunification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11,/19/01

Analysis Performed By: MICILAEL GORYCKI

GO. Structure i Structure Type Length ID of Structure N or N EDS (Nonadb No No Coord i F B C M >=05 p <5m >=51J Chrys Amphibole Nonasb Ambig/ND Elements)

zusz <r

F ■

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:

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 M >5p '■1= EDS spectrum conforming to laboratory holes or opaque areas identification 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 T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003083368

NYC-WTC_000189047