NYC-WTC_000196969

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 6942 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or / EDS ; (Nonadb ; No F B c M >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5p

a

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:

'/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ale laboraton/ identification criteria observed least 20 unfolded or overlapped grid squares <5% f F 1 B I C I M ’ >5u '7= EDS spectrum conforming to laboratory holes or opaque areas j. identification criteria observed Chrvsotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite AmbigiiOLis ! C = Fluster i>3 Iniersectionsi Anthophyllite Non-Asbestos Tremolite M = Matrix \on-ldentified i Actinolite NSD = No Structures Detected

CITY_21MC100_003044299

NYC-WTC_000196969