TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1952 Lab Group #: 5897 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: 0.04496 mm^ GRID BOX: ^3^7 Magnification: 20,000 GRID ID: 7^^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By: Al 6- MICHAEL GORYCKI

GO. Structure Structure Type Length ID of structure N or N EDS (Nonadb No F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) [ /V5<? ♦

I i _______________ Struct = > 0.5p .> 5:1 Aspect Ratto Grid acceptance; ^1= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overtappeo grid squares <5% F B C M >5u \'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile amphiboles"^ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Aimbiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003106480

NYC-WTC_000185386