TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NV’C BOE Volume (liters): 1936 Lab Group #: 6117 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 8 Area Examined: 0.04496 nnr?

GRID BOX: Magnification: 20,000 GRID ED: /iCOZl Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/15/01

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure i Structure Type S Length ID of Structure N or V EDS No iNonadb F B C M i >=05 M Chrys ) Amphibole Nonasb Ambig/ND No Coord ! <5|J Elements)

7

I Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laooratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or.overlapped grid squares <5% F B C i M >5tJ 9= 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 Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003104816

NYC-WTC_000184230