TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 5897 Filter Type / Filter Area: MCE 385 Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 6 Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By: AT 6- MICaCEL GORYCKI

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

I M

■

I I

Struct = > 0.5g -> 5:1 Aspect Ratio Gnd acceptance: ^'= 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 oroveriapped grid squares <5% F B C M >5y v'= EDS soectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i amphiboles I Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite j Ambiguous C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos Tremolite M = Matrix NSD = No Structures Detected Actinolite I Non-Identified . J

CITY_21MC100_003106444

NYC-WTC_000185361