NYC-WTC_000196931

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 6885 Filter Type / Filter Area: MCE 385 mni- Lab Sample #: i I Grid Opening Size: 0.01124

Client Sample #: 19 AreaExamined: 0,04496 mm-

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

Analysis Performed By: MARK PEYSAKHOV

GO i Structure j Structure Type | Length iD of Structure Nor \ 5 us (Nonado No F B 1 C M >=05 M : •=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

A. AS ■>%-.-

M ---- r 1—( ---- 1 -i---- F j----- 1.

b-r 1—t 1---- i \----- L

--------- k I >

Struct = > ().5p -» 5:1 Aspect Ratio Gnd acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals 10% particulate coverage >50% coverage ate iaboratoiy identification criteria observed least 20 unfolded or overlapped grid squares <5% \ F ! B C 1 M >5m v= EDS spectrum conforming tc laboratory holes or opaque areas h —---------------------------- dentification criteria observeo Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003044212

NYC-WTC_000196931