TEM Asbestos air sample results, M3 BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: M 3 BOE Volume /litersI: 1952 Lab Group #: 5904 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 17 Grid Opening Size: 0.01124

Client Sample #: 17 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: //^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/17/01

Analysis Performed By: Ct MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or N EDS ! (Nonadb j No F B C M >=05 [J ■>=5fj Chrys 1 Amphibole Nonasb .Ambig/ND No Coord <5p Elements) j I A

y\ K A & A

I I T I I

J____ I I 1 jI i jp

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance; 7= Positive diffraction pattern properties conforming 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 C M i EDS spectrum conforming to laboratory boles or opaque areas Identification criteria ooservep Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ! Tremolite M = Matrix Non-Identified i Actinolite NSD = No Structures Detected

CITY_21MC100_0 03106513

NYC-WTC_000185407