NYC-WTC_000189902

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme (liters): 1888 Lab Group #: 6631 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 0 01124 Client Sample #: 16 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 - GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=05 p i>=5(j Chrys Amphibole Nonasb Ambig/ND No Coord <5tJ Elements)

ZIC 7^ 4 V 3K

I Struct = > 0 5^ >5 1 Aspect Ratio Gnd acceptance 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 gnd squares <5% F B C M >5p ■(= EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Clirysotile AMPHIBOLES^ Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix ' Tremolite Actinolite Non-Identified -•* 'I - f'l. -'h ,r^e notortpfj

NYC-WTC_OOO1899O2 CITY_21MC100_003088318