NYC-WTC_000229131

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Clieaf JVanie: NYC BOE Volume (liters): 1832 Lab Group #: 7901 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 17 Grid Openine Size: 0.01124

Client Sample #: 19 ■ Area Examined: 0.04496

GRID BOX: /iZL Magnification: 20,000 GRID ID; Accelerating Voltage; iOOKeV # Grid Openings; 4 Analysis Date: 5/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure [ StnjctureTy^ Length ID of Structure N or V H)S (Nonadl) No F B C M >=05 M ■ >=5m Chrys Amphbile Nonash AnWHD No Coord <5m Elements)

ZEZ

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Struct = >0.5u > 5:1 Aspect Ratio Gridaoceptance; J ■= Positive Ciftraction partem properties eonlorming 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 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) AnBtophyllite Non-Asbestos Tremolite ■ M = Matnx , Actinolite Non-ldentified USD = No Structures Detected

CITY_21MC100_002902250

NYC-WTC_000229131