NYC-WTC_000220819

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC’ BOE Volume (liters): 1 840 Lab Group 7404 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sanipic #: OS Area Examined: 0 04496 mm*

GRID BOX: Magnification: ?.0.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/13/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >=05 p >=5(j Chrys Amphibole 1 Nonash Airbig/ND No Coord <5p Elements)

< A zfesQ -J / /> EZv — -u---- —■)

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I Struct = > 0.5p -> 5:1 .Aspect Ratio Grifl acceptance: ■/=: Positive diffraction patierr. properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory idertificafion criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ] >6o Y- EDS specl'u.m confornirg to laboratory holes or opaque areas ---- ( identification c'itera obseived Chrysotile AMPHIBOLES Amphibole r = Single FiPei Amosite 3 = Bundle i<3 fibers <1 fbe'ciameter apart Crocidolite Ambiguous C = Cluster ;>3 Intersections! Anthophyllite / Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Delucted

CITY_21MC100_000621812 NYC-WTC_000220819