NYC-WTC_000217789

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE X'olume (liters): 1936 Lab Group #: 6548 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0,04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2'?’02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure A or \ (Norfrtdn No F B C >=05 p >=5)3 Chrys Amphibole Nonasb Amcig/ND I No Coord Elements) ' <5p 5M (( _±2:

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F S B ' C M : >51 EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chry'sotile j AMPHIBOLES [ Amphibole F = Single Fiber Amosite I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite : Ambiguous C = Cluster {>3 Intersections) : Anthophyllite ; Non-Asbestos Tremolite M = Matrix Non-Identified i Actinolite NSD = No Structures Detected

CITY_21MC100_002877857

NYC-WTC_0002 17789