NYC-WTC_000223418

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1912 Lab Group #: 6462 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By: ROMAN PEYSAKHOV'

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

A/W (I //

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance? n/= 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 >5p >/= 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_002890616

NYC-WTC_000223418