NYC-WTC_000227991

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6882 Filter Type / Filter Area: MCE 385 mm-- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV tf Grid Openings: 4 ■Analysis Date: 3/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or > EDS No (Nonadb F 6 C M >’05 M Chrys Amphibole Nonasb Ambig/ND No . Coord <5m Elements)

-i

1 j

Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: Positive diffrecion pattern properties conforming to .<»* «««««*«<« '’''’tapped or foWed Totals laboratory identification criteria observed * 10% parSculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M I V’ 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 Tremolite M = Matrix Actinolite Non-Identified NSD ’ No Structures Detected

CITY_21MC100_002899587

NYC-WTC_000227991