NYC-WTC_000229762

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 8147 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 8 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By: ROMAN PEYSAKHOV

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

2)^ 1 At?

Struct = > 0.5(j > 5:1 Aspect Ratio Grid acceptance: 'Z = Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals tahnrafnnv ^10% pSfllCUtStS COVGfSQS ^50% C0V6r3^6 StS laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5m '/= EDS spectrum conforming to laboratory holes or opaque areas Identificatian criteria observed Chrysotile ] AMPHIBOLES Amphibole F = Single Fiber I Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart ! Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos M = Matrix ! Tremolite ! Actinolite Non-Identified NSO = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3387891 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000229762