NYC-WTC_000188947

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1952 Lab Group #: 5891 Filter Type / Filter Area: iMCE 385 mm- Lab Sample #: 21 Grid Opening Size: 0.01124

Client Sample #: 21 Area Examined: 0.04496 mm-

GRID BOX: 5~3 Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By: ROMAN PEYSAKBOV

GO. Structure Structure Type Length ID of Structure N or EDS i (Nonadb No F B I C M >=05 p Ctirys Amphibole Nonasb Ambig/ND No Coord <5|j Elements)

•■7 Z3Z2

Ok //

4^(9

Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance:

a/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Ctusier (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003083212

NYC-WTC_000188947